Eosinophilic gastrointestinal disorders (EGIDs) are characterized by eosinophil-rich inflammation in the GI tract without an identified cause. They include eosinophilic esophagitis (EoE), eosinophilic gastritis, eosinophilic gastroenteritis (EGE), and eosinophilic colitis (EC). Eosinophils accumulate in the GI tract due to cytokines like IL-3, IL-5, and eotaxin that enhance eosinophil development, migration, and function. Eosinophil granule proteins are toxic and cause tissue damage. Diagnosis requires endoscopy with biopsy showing ≥15 eos/hpf in the esophagus or ≥30 eos
Eosinophilic esophagitis is characterized by eosinophil-predominant inflammation in the esophagus. Potential etiologies include food and aeroallergen sensitization, genetics involving genes like TSLP, and cytokines/chemokines such as IL-5 and eotaxin-3. The pathogenesis involves activation of epithelial inflammatory pathways producing eotaxin-3, impaired barrier function mediated by loss of desmoglein-1, and increased TGF-β. Clinical features commonly include dysphagia, abdominal pain, failure to thrive, and food impactions. Diagnosis is based on symptoms and histological evidence of ≥15 eosinophils per hpf. Treatment
This document provides an overview of approaches to evaluating and managing malabsorption syndromes. It discusses the etiology, pathophysiology, clinical features, diagnostic testing and general management strategies for a wide range of conditions that can cause malabsorption including celiac disease, short bowel syndrome, exocrine pancreatic insufficiency, bile acid malabsorption, infections, surgeries, and other disorders. The evaluation involves a detailed history, physical exam, initial lab tests, and may require endoscopic examination, imaging, and specialized tests of digestive and absorptive functions. Management is directed at the underlying cause, correcting nutritional deficiencies, and addressing symptoms.
This document discusses a case of a 65-year-old woman with dysphagia and other esophageal symptoms. Further testing revealed eosinophilic infiltration of the esophageal mucosa, consistent with eosinophilic esophagitis (EoE). EoE is a chronic immune-mediated disease characterized by esophageal dysfunction symptoms and eosinophil-predominant inflammation in biopsy. The document provides details on the epidemiology, clinical presentation, diagnostic approach including endoscopy and histology, pathogenesis, and comparisons between pediatric and adult EoE. Management involves identification and elimination of triggering foods or allergens through dietary restriction.
1) Autoimmune pancreatitis is characterized by lymphoplasmacytic infiltration and fibrosis of the pancreas that often dramatically responds to steroid therapy.
2) Diagnosis involves a combination of clinical, imaging, histological, and serological findings including elevated serum IgG4 levels and involvement of other organs.
3) Two subtypes exist - type 1 is associated with elevated IgG4, other organ involvement and a good response to steroids, while type 2 involves granulocytic epithelial lesions and is less responsive to steroids.
Gastroesophageal reflux disease (GERD) is caused by the backflow of gastric contents into the esophagus, resulting in heartburn and regurgitation that affects 30% of the population. Common complications of long-term and severe GERD include esophagitis, Barrett's esophagus which increases cancer risk, and benign esophageal strictures. Lifestyle modifications and medications like PPIs are first-line treatments for GERD symptoms and healing esophagitis, while surgery may be considered for refractory cases or complications.
Eosinophilic gastrointestinal disorders (EGIDs) are characterized by eosinophil-rich inflammation in the GI tract without an identified cause. They include eosinophilic esophagitis (EoE), eosinophilic gastritis, eosinophilic gastroenteritis (EGE), and eosinophilic colitis (EC). Eosinophils accumulate in the GI tract due to cytokines like IL-3, IL-5, and eotaxin that enhance eosinophil development, migration, and function. Eosinophil granule proteins are toxic and cause tissue damage. Diagnosis requires endoscopy with biopsy showing ≥15 eos/hpf in the esophagus or ≥30 eos
Eosinophilic esophagitis is characterized by eosinophil-predominant inflammation in the esophagus. Potential etiologies include food and aeroallergen sensitization, genetics involving genes like TSLP, and cytokines/chemokines such as IL-5 and eotaxin-3. The pathogenesis involves activation of epithelial inflammatory pathways producing eotaxin-3, impaired barrier function mediated by loss of desmoglein-1, and increased TGF-β. Clinical features commonly include dysphagia, abdominal pain, failure to thrive, and food impactions. Diagnosis is based on symptoms and histological evidence of ≥15 eosinophils per hpf. Treatment
This document provides an overview of approaches to evaluating and managing malabsorption syndromes. It discusses the etiology, pathophysiology, clinical features, diagnostic testing and general management strategies for a wide range of conditions that can cause malabsorption including celiac disease, short bowel syndrome, exocrine pancreatic insufficiency, bile acid malabsorption, infections, surgeries, and other disorders. The evaluation involves a detailed history, physical exam, initial lab tests, and may require endoscopic examination, imaging, and specialized tests of digestive and absorptive functions. Management is directed at the underlying cause, correcting nutritional deficiencies, and addressing symptoms.
This document discusses a case of a 65-year-old woman with dysphagia and other esophageal symptoms. Further testing revealed eosinophilic infiltration of the esophageal mucosa, consistent with eosinophilic esophagitis (EoE). EoE is a chronic immune-mediated disease characterized by esophageal dysfunction symptoms and eosinophil-predominant inflammation in biopsy. The document provides details on the epidemiology, clinical presentation, diagnostic approach including endoscopy and histology, pathogenesis, and comparisons between pediatric and adult EoE. Management involves identification and elimination of triggering foods or allergens through dietary restriction.
1) Autoimmune pancreatitis is characterized by lymphoplasmacytic infiltration and fibrosis of the pancreas that often dramatically responds to steroid therapy.
2) Diagnosis involves a combination of clinical, imaging, histological, and serological findings including elevated serum IgG4 levels and involvement of other organs.
3) Two subtypes exist - type 1 is associated with elevated IgG4, other organ involvement and a good response to steroids, while type 2 involves granulocytic epithelial lesions and is less responsive to steroids.
Gastroesophageal reflux disease (GERD) is caused by the backflow of gastric contents into the esophagus, resulting in heartburn and regurgitation that affects 30% of the population. Common complications of long-term and severe GERD include esophagitis, Barrett's esophagus which increases cancer risk, and benign esophageal strictures. Lifestyle modifications and medications like PPIs are first-line treatments for GERD symptoms and healing esophagitis, while surgery may be considered for refractory cases or complications.
Celiac disease is an autoimmune condition triggered by gluten in genetically susceptible individuals. It causes inflammation in the small intestine and can have diverse multi-systemic effects. The document provides historical background on celiac disease and covers its definition, epidemiology, pathogenesis, clinical presentation, diagnosis, treatment and other aspects. Serological testing for tissue transglutaminase or endomysial antibodies is recommended for diagnosis, along with small bowel biopsy to confirm mucosal changes.
Dyspepsia refers to pain or discomfort centered in the upper abdomen. It is a common symptom with various potential causes. The document discusses the definitions, epidemiology, evaluation, and management approaches for different types of dyspepsia including functional dyspepsia and its subtypes of epigastric pain syndrome and postprandial distress syndrome. Testing and treatment are targeted based on alarm features and potential underlying causes, with a focus on lifestyle changes, antisecretory drugs, H. pylori treatment, prokinetics, and other pharmacological and psychological interventions.
Irritable bowel syndrome (IBS) is a common gastrointestinal disorder characterized by abdominal pain and altered bowel habits without any organic cause. It affects 3-22% of the population worldwide. While the exact cause is unclear, it is believed to involve altered gut motility, hypersensitivity, and psychosocial factors. Diagnosis is made based on symptoms according to the Rome criteria and excludes other conditions. Treatment involves dietary modifications, medications to target predominant symptoms such as fiber for constipation or alosetron for diarrhea, and treatment of accompanying psychiatric conditions like anxiety or depression.
This document discusses constipation, including its definition, diagnostic criteria, types, diagnosis and evaluation, approach, and management. It begins by defining constipation and its most common symptoms. It then discusses the Rome III and ACG diagnostic criteria. It describes the main types of constipation as primary (normal transit, slow transit, defecatory disorders) and secondary. Various diagnostic tests are outlined including colonic transit tests, anorectal manometry, and defecography. The approach prioritizes evaluating for secondary causes and alarming features. The role of endoscopy is to exclude conditions like cancer or Hirschsprung's disease. Management options discussed include lifestyle changes, fiber supplements, laxatives, newer drugs like lub
Autoimmune liver disease is a heterogenous group of disorders. Laboratory diagnosis plays an important role in early diagnosis. Availability of transfected cells(F-Actin HEK cells) & cell based assays have increased the test specificity significantly.
Ulcerative colitis causes inflammation and ulcers in the lining of the rectum and colon. Common symptoms include bloody diarrhea, abdominal pain, fatigue, and weight loss. Tests used to diagnose include physical exam, medical history, blood tests, and stool samples. While the specific cause is unknown, genetic and environmental factors may play a role. Treatment often involves medications like mesalazine which reduce inflammation. The disease course varies depending on extent of involvement, with limited disease usually having a milder course.
This document provides an overview of ulcerative colitis including its definition, epidemiology, etiology, pathogenesis, diagnosis, assessment, management, complications, and extra-intestinal manifestations. Some key points include:
- UC is a chronic inflammatory bowel disease that involves the colonic mucosa. It typically affects the rectum and may extend proximally in a continuous pattern.
- Diagnosis involves clinical features, lab tests, endoscopy, histology, and ruling out other causes. Disease extent and severity are also assessed.
- Management depends on disease severity and extent, and may include 5-aminosalicylates, corticosteroids, immunomodulators, biologics, or colect
Eosinophilic Esophagitis is a chronic immune/antigen-mediated disease characterized by esophageal dysfunction symptoms and eosinophil-predominant inflammation. It is diagnosed based on symptoms, endoscopic findings showing eosinophil levels over 15/hpf on biopsy. Treatment involves dietary elimination of food triggers, topical corticosteroids, or oral corticosteroids for severe cases. Dietary therapy, especially elimination diets, have been shown to significantly improve symptoms and reduce eosinophil levels on follow up biopsies.
This document discusses the evaluation and causes of chronic diarrhea. It begins by defining chronic diarrhea and outlining the normal stool production process. It then describes the main mechanisms that can cause diarrhea - osmotic, secretory, inflammatory, and dysmotility. Specific causes are discussed under each mechanism, including diseases, medications, toxins, and dietary factors. The document outlines the evaluation of a patient with chronic diarrhea, including history, physical exam, stool tests, imaging, and other lab tests. It provides guidance on testing for malabsorption and evaluating postsurgical causes of chronic diarrhea.
The key points are:
- Peptic ulcers are chronic, solitary ulcers that occur where the gastrointestinal tract is exposed to gastric acid and pepsin, most commonly the duodenum and stomach.
- Risk factors include H. pylori infection, NSAID use, smoking, stress, and family history.
- Common symptoms are epigastric pain, nausea, vomiting, bleeding.
- Treatment involves eradication of H. pylori, PPIs, histamine blockers, and sometimes surgery for complications.
Celiac disease is an immune-mediated disorder triggered by ingestion of gluten in genetically susceptible individuals. It is characterized by damage to the small intestine and typically results in malabsorption of nutrients. The document discusses the definition, epidemiology, pathophysiology, clinical manifestations, diagnosis and management of celiac disease. Key points include that celiac disease prevalence is increasing, it has a strong genetic component associated with HLA-DQ2 and HLA-DQ8, diagnosis involves serological testing followed by small bowel biopsy showing villous flattening, and treatment is a lifelong gluten-free diet.
This document discusses irritable bowel syndrome (IBS), defining it as a functional bowel disorder characterized by abdominal pain or discomfort along with changes in bowel habits without any detectable structural abnormality. The prevalence of IBS is 10-20% of the population, more common in females. Potential causes include altered gut motility, visceral hypersensitivity, gut-brain interaction disturbances, and environmental and psychological factors. Diagnosis is based on clinical criteria such as recurrent abdominal pain relieved by defecation and changes in stool frequency or form. Treatment focuses on lifestyle modifications, antispasmodics, antidepressants, and probiotics.
This document discusses Helicobacter pylori infection. It begins with a summary of the discovery of H. pylori, including Giulio Bizzozero's initial description in 1892 and Robin Warren and Barry Marshall's cultivation of H. pylori in 1982. It then covers the epidemiology of H. pylori infection, indications for treatment, methods for diagnosing infection, treatments for infection, and the role of H. pylori eradication in preventing gastric cancer. Key points include that over 50% of the world's population is infected with H. pylori and treatment aims to cure ulcers and reduce cancer risk. Diagnosis involves non-invasive tests like serology or breath tests
an over view of IBS in the general population, talks about aetiology pathology clinical features and diagnosis with special reference to the ROME criteria and the differences between ROME II and III.
Malabsorption syndrome: pathophysiology and diagnosis. Teaching slidesAttività scientifica
Malabsorption syndrome refers to disorders of nutrient absorption in the small intestine. It can affect absorption of carbohydrates, proteins, fats, vitamins, and minerals. Common causes include exocrine pancreatic insufficiency, intestinal infections or inflammation, and celiac disease. Diagnosis involves evaluating patients for symptoms of malabsorption and performing tests like stool tests for fat content, small intestine biopsies, imaging, and nutrient absorption tests. This helps identify the specific nutrients affected and determine the underlying cause of malabsorption.
IBS is a functional bowel disorder characterized by abdominal pain and altered bowel habits. It affects 5-10% of people in North America, predominantly women aged 20-39. The causes involve genetics, gut motility issues, hypersensitivity, and the brain-gut axis. Treatment focuses on symptom relief through diet, exercise, fiber, probiotics, antispasmodics, antidepressants, and 5-HT agonists/antagonists. Managing IBS can be challenging due to recurrent, resistant symptoms.
Chronic Diarrhea
references include the American Academy of Family Physicians AAFP
Special Thanks to my colleague Hadi Al Qurain for his participation in preparing this presentation
A 48-year-old man presented with rectal bleeding and was found to have diffuse submucosal edema in the distal jejunum and ileum, along with beading in the superior mesenteric artery branches and narrowing of the ileal vas recta. He was diagnosed with polyarteritis nodosa (PAN) based on these imaging findings and clinical course. PAN is a necrotizing vasculitis typically involving medium-sized arteries. The patient was treated with steroids and anticoagulation for PAN and associated pulmonary thromboembolism. He was later discharged after improvement of symptoms.
Slide seminar on Cardiothoracic Pathology - IAPM Kerala 73rd meeting.drmkcp
IAPM kerala 73rd chapter meeting Slide seminar.
Topic -Cardiothracic Pathology
Moderator :Dr. Elizabeth Joseph MD,DNB.FRCPath
Professor & HOD
MOSC Medical College, Kolenchery
The document summarizes the major components and functions of the human digestive system. It describes the organs that make up the digestive tract, including the mouth, esophagus, stomach, small and large intestines, pancreas, liver, and gallbladder. It provides details on the layers of the digestive tract wall and specialized cells found in the stomach, small intestine, large intestine, pancreas, and liver that aid in digestion. The document also briefly discusses celiac disease, inflammatory bowel disease, and irritable bowel syndrome.
Celiac disease is an autoimmune condition triggered by gluten in genetically susceptible individuals. It causes inflammation in the small intestine and can have diverse multi-systemic effects. The document provides historical background on celiac disease and covers its definition, epidemiology, pathogenesis, clinical presentation, diagnosis, treatment and other aspects. Serological testing for tissue transglutaminase or endomysial antibodies is recommended for diagnosis, along with small bowel biopsy to confirm mucosal changes.
Dyspepsia refers to pain or discomfort centered in the upper abdomen. It is a common symptom with various potential causes. The document discusses the definitions, epidemiology, evaluation, and management approaches for different types of dyspepsia including functional dyspepsia and its subtypes of epigastric pain syndrome and postprandial distress syndrome. Testing and treatment are targeted based on alarm features and potential underlying causes, with a focus on lifestyle changes, antisecretory drugs, H. pylori treatment, prokinetics, and other pharmacological and psychological interventions.
Irritable bowel syndrome (IBS) is a common gastrointestinal disorder characterized by abdominal pain and altered bowel habits without any organic cause. It affects 3-22% of the population worldwide. While the exact cause is unclear, it is believed to involve altered gut motility, hypersensitivity, and psychosocial factors. Diagnosis is made based on symptoms according to the Rome criteria and excludes other conditions. Treatment involves dietary modifications, medications to target predominant symptoms such as fiber for constipation or alosetron for diarrhea, and treatment of accompanying psychiatric conditions like anxiety or depression.
This document discusses constipation, including its definition, diagnostic criteria, types, diagnosis and evaluation, approach, and management. It begins by defining constipation and its most common symptoms. It then discusses the Rome III and ACG diagnostic criteria. It describes the main types of constipation as primary (normal transit, slow transit, defecatory disorders) and secondary. Various diagnostic tests are outlined including colonic transit tests, anorectal manometry, and defecography. The approach prioritizes evaluating for secondary causes and alarming features. The role of endoscopy is to exclude conditions like cancer or Hirschsprung's disease. Management options discussed include lifestyle changes, fiber supplements, laxatives, newer drugs like lub
Autoimmune liver disease is a heterogenous group of disorders. Laboratory diagnosis plays an important role in early diagnosis. Availability of transfected cells(F-Actin HEK cells) & cell based assays have increased the test specificity significantly.
Ulcerative colitis causes inflammation and ulcers in the lining of the rectum and colon. Common symptoms include bloody diarrhea, abdominal pain, fatigue, and weight loss. Tests used to diagnose include physical exam, medical history, blood tests, and stool samples. While the specific cause is unknown, genetic and environmental factors may play a role. Treatment often involves medications like mesalazine which reduce inflammation. The disease course varies depending on extent of involvement, with limited disease usually having a milder course.
This document provides an overview of ulcerative colitis including its definition, epidemiology, etiology, pathogenesis, diagnosis, assessment, management, complications, and extra-intestinal manifestations. Some key points include:
- UC is a chronic inflammatory bowel disease that involves the colonic mucosa. It typically affects the rectum and may extend proximally in a continuous pattern.
- Diagnosis involves clinical features, lab tests, endoscopy, histology, and ruling out other causes. Disease extent and severity are also assessed.
- Management depends on disease severity and extent, and may include 5-aminosalicylates, corticosteroids, immunomodulators, biologics, or colect
Eosinophilic Esophagitis is a chronic immune/antigen-mediated disease characterized by esophageal dysfunction symptoms and eosinophil-predominant inflammation. It is diagnosed based on symptoms, endoscopic findings showing eosinophil levels over 15/hpf on biopsy. Treatment involves dietary elimination of food triggers, topical corticosteroids, or oral corticosteroids for severe cases. Dietary therapy, especially elimination diets, have been shown to significantly improve symptoms and reduce eosinophil levels on follow up biopsies.
This document discusses the evaluation and causes of chronic diarrhea. It begins by defining chronic diarrhea and outlining the normal stool production process. It then describes the main mechanisms that can cause diarrhea - osmotic, secretory, inflammatory, and dysmotility. Specific causes are discussed under each mechanism, including diseases, medications, toxins, and dietary factors. The document outlines the evaluation of a patient with chronic diarrhea, including history, physical exam, stool tests, imaging, and other lab tests. It provides guidance on testing for malabsorption and evaluating postsurgical causes of chronic diarrhea.
The key points are:
- Peptic ulcers are chronic, solitary ulcers that occur where the gastrointestinal tract is exposed to gastric acid and pepsin, most commonly the duodenum and stomach.
- Risk factors include H. pylori infection, NSAID use, smoking, stress, and family history.
- Common symptoms are epigastric pain, nausea, vomiting, bleeding.
- Treatment involves eradication of H. pylori, PPIs, histamine blockers, and sometimes surgery for complications.
Celiac disease is an immune-mediated disorder triggered by ingestion of gluten in genetically susceptible individuals. It is characterized by damage to the small intestine and typically results in malabsorption of nutrients. The document discusses the definition, epidemiology, pathophysiology, clinical manifestations, diagnosis and management of celiac disease. Key points include that celiac disease prevalence is increasing, it has a strong genetic component associated with HLA-DQ2 and HLA-DQ8, diagnosis involves serological testing followed by small bowel biopsy showing villous flattening, and treatment is a lifelong gluten-free diet.
This document discusses irritable bowel syndrome (IBS), defining it as a functional bowel disorder characterized by abdominal pain or discomfort along with changes in bowel habits without any detectable structural abnormality. The prevalence of IBS is 10-20% of the population, more common in females. Potential causes include altered gut motility, visceral hypersensitivity, gut-brain interaction disturbances, and environmental and psychological factors. Diagnosis is based on clinical criteria such as recurrent abdominal pain relieved by defecation and changes in stool frequency or form. Treatment focuses on lifestyle modifications, antispasmodics, antidepressants, and probiotics.
This document discusses Helicobacter pylori infection. It begins with a summary of the discovery of H. pylori, including Giulio Bizzozero's initial description in 1892 and Robin Warren and Barry Marshall's cultivation of H. pylori in 1982. It then covers the epidemiology of H. pylori infection, indications for treatment, methods for diagnosing infection, treatments for infection, and the role of H. pylori eradication in preventing gastric cancer. Key points include that over 50% of the world's population is infected with H. pylori and treatment aims to cure ulcers and reduce cancer risk. Diagnosis involves non-invasive tests like serology or breath tests
an over view of IBS in the general population, talks about aetiology pathology clinical features and diagnosis with special reference to the ROME criteria and the differences between ROME II and III.
Malabsorption syndrome: pathophysiology and diagnosis. Teaching slidesAttività scientifica
Malabsorption syndrome refers to disorders of nutrient absorption in the small intestine. It can affect absorption of carbohydrates, proteins, fats, vitamins, and minerals. Common causes include exocrine pancreatic insufficiency, intestinal infections or inflammation, and celiac disease. Diagnosis involves evaluating patients for symptoms of malabsorption and performing tests like stool tests for fat content, small intestine biopsies, imaging, and nutrient absorption tests. This helps identify the specific nutrients affected and determine the underlying cause of malabsorption.
IBS is a functional bowel disorder characterized by abdominal pain and altered bowel habits. It affects 5-10% of people in North America, predominantly women aged 20-39. The causes involve genetics, gut motility issues, hypersensitivity, and the brain-gut axis. Treatment focuses on symptom relief through diet, exercise, fiber, probiotics, antispasmodics, antidepressants, and 5-HT agonists/antagonists. Managing IBS can be challenging due to recurrent, resistant symptoms.
Chronic Diarrhea
references include the American Academy of Family Physicians AAFP
Special Thanks to my colleague Hadi Al Qurain for his participation in preparing this presentation
A 48-year-old man presented with rectal bleeding and was found to have diffuse submucosal edema in the distal jejunum and ileum, along with beading in the superior mesenteric artery branches and narrowing of the ileal vas recta. He was diagnosed with polyarteritis nodosa (PAN) based on these imaging findings and clinical course. PAN is a necrotizing vasculitis typically involving medium-sized arteries. The patient was treated with steroids and anticoagulation for PAN and associated pulmonary thromboembolism. He was later discharged after improvement of symptoms.
Slide seminar on Cardiothoracic Pathology - IAPM Kerala 73rd meeting.drmkcp
IAPM kerala 73rd chapter meeting Slide seminar.
Topic -Cardiothracic Pathology
Moderator :Dr. Elizabeth Joseph MD,DNB.FRCPath
Professor & HOD
MOSC Medical College, Kolenchery
The document summarizes the major components and functions of the human digestive system. It describes the organs that make up the digestive tract, including the mouth, esophagus, stomach, small and large intestines, pancreas, liver, and gallbladder. It provides details on the layers of the digestive tract wall and specialized cells found in the stomach, small intestine, large intestine, pancreas, and liver that aid in digestion. The document also briefly discusses celiac disease, inflammatory bowel disease, and irritable bowel syndrome.
Eosinophilic esophagitis (EoE) is a chronic immune/antigen-mediated disease characterized by esophageal dysfunction symptoms and >15 eosinophils per high power field in esophageal biopsies. It was first reported in 1977. Diagnosis requires ruling out GERD and involves endoscopy with multiple biopsies. Treatment includes topical steroids, dietary elimination, or systemic steroids to reduce symptoms and support tissue healing. EoE affects males more than females and tends to be a relapsing condition requiring long-term management.
Dr rajendiran slide seminar with ANSWER KEYSkciapm
This document presents 10 cases of patients who underwent endoscopy and gastric biopsies. For each case, it includes demographic information, endoscopy findings, biopsy findings from the corpus and antrum sections, and the diagnosis. The cases include examples of chronic gastritis, H. pylori infection, intestinal metaplasia, atrophy, CMV infection, celiac disease, polyps, and gastric cancer.
This document discusses allergies and hypersensitivity reactions. It defines allergy as an immune reaction to substances that do not normally affect most people. Common allergens include pollen, dust mites, mold, pet dander, food, insect stings, and medicines. It describes the four main types of hypersensitivity reactions (Type I-IV) based on their mechanisms and time course. Type I reactions are immediate and can involve skin, eyes, lungs, and gastrointestinal tract. The document outlines the pathophysiology, clinical manifestations, diagnosis, and treatment of allergic conditions such as rhinitis, asthma, urticaria, angioedema, and anaphylaxis.
This document summarizes the spectrum of gluten-related disorders, including celiac disease, gluten sensitivity, and gluten allergy. It provides references from experts in the field and outlines evidence for conditions beyond celiac disease, such as non-celiac gluten sensitivity. The prevalence of celiac disease is increasing for various reasons including improved detection methods and a possible actual rise in incidence. There is also a growing market for gluten-free products driven by both celiac disease and non-celiac gluten sensitivity.
This document discusses eosinophilic esophagitis, a condition characterized by eosinophilic infiltration of the gastrointestinal tract. Key points:
- Symptoms include abdominal pain, diarrhea, failure to thrive. Biopsy shows >20 eosinophils per high-power field.
- Causes are often allergic or related to food allergies. Males are more commonly affected between ages 20-50.
- Treatment involves dietary elimination, steroids, or mast cell stabilizers. Prognosis is generally good but risks include malnutrition or obstruction.
This document provides information on eosinophils and pulmonary eosinophilic syndromes. It discusses the classification of pulmonary eosinophilic syndromes including Loeffler's syndrome, drug-induced pulmonary eosinophilia, idiopathic acute eosinophilic pneumonia, tropical pulmonary eosinophilia, and chronic eosinophilic pneumonia. For each condition, it describes the clinical features, investigations, treatment, and prognosis. Radiographic and microscopic images are also included to illustrate common findings.
Slides for liver slide seminar,Pathology CME,Govt.Medical College, Kottayam.drmkcp
This document presents 13 cases presented at a liver slide seminar. The cases include patients of various ages presenting with symptoms such as fever, jaundice, abdominal pain and fatigue. Laboratory findings for liver function tests and other blood work are provided. The cases represent a variety of liver diseases including viral hepatitis, liver tumors, and complications in pregnancy.
This document discusses complexometric titrations using ethylenediaminetetraacetic acid (EDTA) as the titrant. It describes how EDTA forms stable 1:1 complexes with metal ions and can be used to titrate metals in various ways, including direct titration, back-titration, and replacement titration. It also explains the importance of pH and discusses indicators used for different metal-EDTA complexes. Calcium titrations are discussed as an example, noting how magnesium ions improve the sharpness of the endpoint when using solochrome black indicator.
The document provides an overview of protein-ligand docking, which is a computational method used in structure-based drug design to predict how small molecules bind to proteins. It discusses key components of docking software including search algorithms that generate poses of ligands in the binding site and scoring functions that calculate binding affinity scores. The document also touches on uses of docking like virtual screening and pose prediction, as well as considerations like flexible docking and handling protein conformations.
This document discusses the pathophysiology, classification, and management of shock. It defines shock and classifies it into four main categories: hypovolemic, cardiogenic, obstructive, and distributive shock. For each type, the document discusses causes, characteristics, hemodynamics, and clinical correlates. Key points include that distributive shock is most commonly septic shock, and hypovolemic shock is a major cause of early trauma mortality. The document also reviews the diagnosis and evaluation of shock, including clinical signs, laboratory tests, and invasive monitoring techniques. It outlines initial diagnostic and therapeutic steps for managing a patient in shock.
The mucose membrane lining of gastrointestinal tract is stratified squamous epithelium at the esophagus which slowly convert into simple columnar epithelium at the stomach until the anus it converts back into the stratified squamous epithelium at the lower half of the anal canal. The stratified epithelium is a wear and tear epithelium.
As it passes down from the small to large intestine, goblet cells increase because as it passes down water was absorb, goblet cells function to produce mucous.
This is just a rough idea, for better slides with more reference please PM the author at davidgqf@gmail.com.
Protein docking is used to check the structure, position and orientation of a protein when it interacts with small molecules like ligands. Protein receptor-ligand motifs fit together tightly, and are often referred to as a lock and key mechanism. There are both high specificity and induced fit within these interfaces with specificity increasing with rigidity. The foremost thing that we need to start with a docking search is the sequence of our protein of interest. (Halperin et al., 2002).
Protein-protein interactions occur between two proteins that are similar in size. The interface between the two molecules tends to be flatter and smoother than those in interfaces of these interactions do not have the ability to alter protein-ligand interactions. Protein-protein interactions are usually more rigid, the conformation in order to improve binding and ease movement. (Smith and Sternberg, 2002).
The process of drug development has revolved around a screening approach, as nobody knows which compound or approach could serve as a drug or therapy. Such almost blind screening approach is very time-consuming and laborious. The goal of structure-based drug design is to find chemical structures fitting in the binding pocket of the receptor. Based on the three-dimensional structure of the target protein, it can automatically build ligand molecules within the binding pocket and subsequently screen them (Weil et al., 2004).
A homology model of the housefly voltage-gated sodium channel was developed to predict the location of binding sites for the insecticides fenvalerate, a synthetic pyrethroid, and DDT, an early generation organochlorine. The model successfully addresses the state-dependent affinity of pyrethroid insecticides. (O’Reilly et al., 2006).
This document provides information on gastrointestinal bleeding, including its anatomy, definition, epidemiology, clinical features, etiology, history and examination, investigation, and management. It discusses the major sites of upper and lower GI bleeding. For upper GI bleeding it covers topics such as esophageal varices, Mallory-Weiss tears, esophageal cancer, peptic ulcer disease, erosive gastritis, gastric cancer, and Dieulafoy's disease. For lower GI bleeding it briefly mentions duodenitis. It provides details on the pathogenesis, clinical presentation, investigations and treatment of many of these conditions.
This document provides an overview of upper gastrointestinal hemorrhage. It defines upper GI hemorrhage as bleeding in the upper gastrointestinal tract below the ligament of Treitz. The most common causes are listed as peptic ulcer, portal hypertension, gastritis, and esophageal varices. Patients typically present with hematemesis, melena, or hematochezia. Diagnosis involves physical examination, lab tests, and endoscopic evaluation. Initial management focuses on stabilizing the patient and determining the source and rate of bleeding in order to guide specific treatment.
This document discusses lower gastrointestinal bleeding, including definitions, classifications, differential diagnoses, investigations, and treatments. It covers conditions such as hemorrhoids, carcinoma of the rectum, diverticular disease, peri-anal hematoma, and fissure-in-ano. For each condition, it describes symptoms, signs on examination, investigations, differential diagnoses, complications, and treatment approaches.
This document provides an overview of non-neoplastic disorders of the esophagus. It discusses the epidemiology, embryology, and histology of the esophagus. Several congenital lesions are described including esophageal atresia. Various types of esophagitis are outlined including reflux esophagitis, eosinophilic esophagitis, and corrosive esophagitis. Barrett's esophagus and its association with gastroesophageal reflux disease is summarized. Mechanical disorders of the esophagus like achalasia are mentioned. Finally, systemic disorders that can involve the esophagus are noted such as graft-versus-host disease.
Eosinophilic gastrointestinal disorders (EGIDs) are characterized by selective infiltration of the GI tract by eosinophils in the absence of other causes of eosinophilia. The main EGIDs are eosinophilic esophagitis, eosinophilic gastritis, eosinophilic enteritis, and eosinophilic colitis. They are diagnosed based on endoscopic findings, histological evidence of eosinophilic infiltration, and exclusion of other causes. Treatment involves dietary therapy to eliminate food triggers, topical or systemic corticosteroids, and in some severe cases, endoscopic dilation or surgery. Prognosis depends on early diagnosis and treatment adherence, as untreated EGIDs can
The document discusses eosinophilic esophagitis (EoE), including its rising prevalence, clinical presentation, histologic and endoscopic features, pathogenesis, treatment with proton pump inhibitors, diet therapy, and complications such as strictures. It notes that the most consistent predictor of esophageal stenosis in EoE is the duration of disease due to subepithelial remodeling over time. For a 33-year-old man interested in dietary therapy after partial response to PPIs, the document would recommend starting with the six food elimination diet to empirically remove the most common food allergens.
Ellen Kamhi, PhD RN, The Natural Nurse, Leaky Gut is also called Compromised Intestinal Permeability, due to loss of integrity of the tight junctions between cells in the intestinal mucosa, and is well documented in the scientific literature. See my document Role of Intestinal Permeability in the Inflammatory Process. This condition should be addressed by all health care providers.
Most medically important family of non–spore-forming gram-negative rods.
Most species are normal flora of the GI tract. Salmonella, Shigella, and Yersinia are not normal GI flora.
Major cause of nosocomial infections
Diseases include UTIs, gastroenteritis, septicemia, food poisoning, wound infections, peritonitis, pneumonia, and meningitis
The family exhibits four serological characteristics:
O (somatic) antigen-A cell wall antigen-LPS (heat stable), Used for serological grouping of Salmonella & Shigella.
K (envelope) antigen-Capsular antigen (heat labile)
H (flagellar) antigen-Flagellar antigen-protein (heat labile), Used to serotype Salmonella.
Vi antigen-Capsular antigen of Salmonella Typhi-polysaccharide (heat labile), Role in preventing phagocytosis, may mask O Ag, removed by heating.
Enterobacteriaceae are facultative anaerobes, ferment glucose. Positive nitrate and catalase, non-hemolytic. Except for Plesiomonas, they are oxidase negative.
Necrotizing enterocolitis is a disease that primarily affects premature infants, causing necrosis of the bowel. It has a multifactorial pathogenesis involving intestinal ischemia, impaired host defenses, enteral feeding, and bacterial colonization in the immature gut. Clinical features include feeding intolerance and abdominal symptoms. Diagnosis is supported by imaging findings like pneumatosis intestinalis. Management involves bowel rest, antibiotics, monitoring for complications. Outcomes range from complete recovery to death depending on severity.
This document describes a case of a 28-year-old man presenting with dysphagia of solid foods for 3 months. Endoscopy and biopsy revealed eosinophilic esophagitis, with a marked infiltration of eosinophils in the esophagus and positive skin tests to several foods. He was placed on an elimination diet avoiding the foods he tested positive to, along with steroid treatment, which led to marked improvement in his symptoms. The document discusses the definition, pathogenesis, clinical manifestations, diagnostic criteria involving endoscopy and histology findings, allergy evaluation, and treatment options including dietary elimination and steroids for eosinophilic esophagitis.
This document discusses functional and organic gastrointestinal disorders in children and adolescents. It begins by defining and classifying common organic disorders of the esophagus, stomach, duodenum, pancreas, and intestine seen in pediatric patients. These include gastroesophageal reflux disease, peptic ulcers, and inflammatory bowel diseases. The document then discusses the etiology, clinical manifestations, diagnosis, and treatment of these conditions in more detail. It also covers functional gastrointestinal disorders, which are defined as conditions with gastrointestinal symptoms that cannot be explained by structural abnormalities.
I am Tariq Bin Aziz, From Southeast University, Bangladesh. I made this presentation on E.coli. I think you will be benefited by my presentation. Thanks All.
The document summarizes information from a lecture on food allergies. It discusses that food allergies affect up to 12 million Americans and are caused by an adverse immune response to food proteins. The most common food allergies are to the "Big 8" foods of dairy, eggs, peanuts, tree nuts, seafood, shellfish, soy, and wheat. Diagnosis involves tests like skin prick tests and blood tests to detect allergy-causing IgE antibodies. Treatment is complete avoidance of the offending foods. Future research aims to develop vaccines or cures for food allergies.
The document describes a case of a 48-year-old male patient from Bangladesh presenting with abdominal pain and vomiting. Initial testing showed eosinophilia. Further investigation with endoscopy led to a diagnosis of eosinophilic gastroenteritis, which involves eosinophil infiltration of the stomach or intestine. The disease can affect the mucosa, muscle layer, or subserosa. Diagnosis is based on biopsy findings and symptoms depending on the layer involved. The pathogenesis is thought to involve an allergic response in some cases.
The document describes a case of a 48-year-old male patient from Bangladesh presenting with abdominal pain and vomiting. Initial testing showed eosinophilia. Further investigation with endoscopy resulted in a diagnosis of eosinophilic gastroenteritis, which is characterized by eosinophil infiltration of the gastrointestinal tract. The disease can affect the mucosa, muscle layer, or subserosa. Diagnosis is confirmed by biopsy showing elevated eosinophils. The pathogenesis is thought to involve an allergic response in some cases.
Irritable bowel syndrome (IBS) is a chronic functional disorder characterized by abdominal pain and changes in bowel habits without any underlying structural abnormality. The ROME IV criteria are used to diagnose IBS based on recurrent abdominal pain associated with changes in stool frequency or appearance. IBS is very common, affecting up to 21% of the population, and is more prevalent in women. While the exact cause is unknown, factors like altered gut motility, microbiome changes, and visceral hypersensitivity are thought to play a role. Evaluation focuses on excluding other potential causes through medical history, examination, and initial lab tests and imaging only if indicated.
Celiac disease is an autoimmune disorder triggered by ingesting gluten, which damages the small intestine's lining. It affects about 1 in 100 people worldwide. The disease is caused by an interaction between gluten and the small intestine in genetically predisposed individuals. There is no cure, but following a strict gluten-free diet can help manage symptoms and prevent complications like osteoporosis and intestinal cancer. A biopsy of the small intestine is required for diagnosis to confirm the characteristic damage to intestinal villi.
Chronic mucocutaneous candidiasis (CMC) is characterized by persistent Candida infections of the skin, mucous membranes, and nails. It can be caused by defects in the IL-17 and C-type lectin receptor pathways, which are important for antifungal immunity. Major genetic causes include mutations in AIRE leading to APS1/APECED syndrome, FOXP3 causing IPEX syndrome, and STAT1 gain-of-function mutations. Patients present with chronic Candida infections and may have associated autoimmune manifestations or invasive fungal infections. Treatment involves antifungal therapy and management of associated conditions.
Dysbiosis & Probiotics Gyn Final (1) [Autosaved].pptxVidushRatan1
1. The gut microbiota is a complex ecosystem composed of trillions of bacteria that play an important role in human health and disease. Antibiotics can disrupt the balance of gut bacteria and cause dysbiosis.
2. Probiotics have shown promise in treating antibiotic-associated diarrhea by replenishing healthy gut bacteria. They work by competing with pathogens for space and nutrients, stimulating the immune system, and producing acids that lower gut pH.
3. Not all probiotic strains are alike - their effects are highly strain-specific. Studies showing benefits of one strain cannot be generalized to other untested strains without further research.
This document discusses various food borne diseases including their classification, causative agents, modes of transmission, symptoms, and prevention methods. It focuses on salmonellosis, describing the salmonella bacteria and serotypes that commonly cause food poisoning in humans. Symptoms of salmonellosis include abdominal pain, diarrhea, fever and vomiting. Foods of animal origin like meat, eggs and dairy are often vehicles of transmission. Proper cooking and hygiene are recommended for prevention.
Food allergy has been long recognized and well documented. Other adverse reactions to foods first referred to as “toxic idiopathies” by John Freeman, co inventor of immunotherapy, at the early part of the 1900s can be mediated by and have their impact on the nervous and endocrine systems. It can also be mediated by pharmacologic mechanisms and can also affect any part of the body. There’s a great clinical need to accurately identify triggers of adverse reactivity as they have now been linked with even the most serious of modern maladies and diseases. In fact, inflammation is the hallmark of metabolic syndrome. Given the multitude of pathogenic mechanisms underlying adverse reactions to foods and other environmental exposures it is necessary that a utilizable and cost effective technology be understood so that its application be utilized under the appropriate circumstances.
KEY LEARNING POINTS
• The natural ability of certain foods to initiate an inflammatory response and induce metabolic disruptions and counterbalancing mechanisms to prevent that
• How foods can trigger “danger signals” for the immune system
Pharmacologic vs. immunologic reactions to foods
• Is there a common final pathway of all these mechanisms that can reliably indicate triggers of clinical pathology?
• Cellular testing vs. serologic testing: The advantages of cellular testing
Similar to Eosinophilic gastrointestinal disorders (part II) (20)
- Cat and dog allergens such as Fel d 1 and Can f 1 are major allergens found in fur, dander, and saliva that can become airborne and cause sensitization in a large percentage of allergic individuals.
- Lipocalins make up many mammalian allergens and show cross-reactivity between species due to structural similarities, explaining co-sensitizations between cats, dogs, horses, and other animals.
- Higher levels of IgE antibodies to specific dog lipocalins are associated with more severe asthma in children with dog allergy.
1) DRESS syndrome is a severe cutaneous drug reaction characterized by fever, lymphadenopathy, hematologic abnormalities, multisystem involvement, and viral reactivation. It has a delayed onset of 2-3 weeks after starting the culprit drug.
2) The skin manifestations are typically a polymorphous maculopapular eruption and facial edema. Systemic involvement can include the liver, kidneys, lungs and other organs.
3) Diagnosis is based on clinical criteria including the RegiSCAR scoring system which evaluates morphology, timing of onset, organ involvement, hematologic abnormalities and viral reactivation.
Wheat is one of the most important global food sources and wheat allergy prevalence varies from 0.4-4% depending on age and region. Several wheat proteins have been identified as major allergens, including omega-5-gliadin, alpha-amylase inhibitors, and glutenins. Studies have found that serum testing for IgE antibodies to specific wheat allergens, such as omega-5-gliadin, glutenins, and alpha-amylase inhibitors, can help diagnose wheat allergy and distinguish between mild and severe cases. Sensitization to different wheat allergens is associated with wheat-dependent exercise-induced anaphylaxis versus occupational baker's asthma. Proper diagnosis and
Major indoor allergens include dust mites, domestic animals like cats and dogs, insects like cockroaches, mice, and fungi. Dust mites thrive in warm, humid environments like mattresses, bedding, and upholstered furniture, where they feed on human skin scales and excrete allergenic fecal particles. Cat allergens like Fel d 1 accumulate in fur and can become airborne, causing worse asthma outcomes in sensitized individuals. Minimizing exposure involves removing carpets, frequent washing of bedding, humidity control, HEPA filtration and ventilation.
This document provides information on Hymenoptera, focusing on the families Apidae and Vespidae. It discusses the epidemiology and prevalence of insect venom allergy. It also covers the taxonomy, venom composition, and clinical manifestations of common stinging insects like honeybees, hornets, wasps and yellow jackets. Key allergens are identified for different species.
- NSAIDs hypersensitivity can present with distinct clinical phenotypes based on organ system involvement and timing of symptoms. It is estimated that less than 20% of reported adverse reactions to NSAIDs are true hypersensitivities.
- AERD/NERD involves eosinophilic rhinosinusitis, asthma, and nasal polyps. Exposure to aspirin or other NSAIDs exacerbates bronchospasms and rhinitis. Management involves lifelong avoidance of culprit and cross-reacting NSAIDs.
- Various phenotypes are described beyond the EAACI classification, including blended reactions involving multiple organs, food-dependent NSAID-induced anaphylaxis, and NSAID-selective immediate reactions. Proper diagnosis relies
The document discusses food immunotherapy for treating food allergies. It provides definitions and outlines immune mechanisms and efficacy evidence from studies on peanut, cow's milk, egg, and wheat oral immunotherapy (OIT). Peanut OIT studies showed 67-78% of children achieved desensitization and 21-46% achieved sustained unresponsiveness. Cow's milk and egg OIT also demonstrated desensitization in 50-75% of children. Wheat OIT studies found 52-69% achieved desensitization. OIT was effective at increasing tolerance but also increased rates of adverse events during treatment.
This document summarizes X-linked agammaglobulinemia (XLA), an inherited primary immunodeficiency caused by mutations in the Bruton's tyrosine kinase (Btk) gene. XLA is characterized by absent B cells and low immunoglobulin levels, leading to recurrent bacterial infections starting in infancy. Management involves immunoglobulin replacement and antibiotic therapy. With treatment, life expectancy has improved dramatically though complications can include lung disease. The document also briefly discusses other forms of agammaglobulinemia caused by defects in genes important for early B cell development.
This document discusses histamine and anti-histamines. It provides information on:
1. The structure and function of histamine and its receptors in immune response regulation. Histamine plays a role in processes like antigen presentation and influencing T and B cell responses.
2. The classification and structures of different types of anti-histamines, including first and second generation anti-histamines from different chemical classes.
3. Some anti-histamines have the potential to cause hypersensitivity in rare cases, even those from different chemical classes with no structural similarity.
The document discusses beta-lactam allergy, including penicillin and cephalosporin allergies. It covers the epidemiology, classifications, structures, mechanisms, and investigations of beta-lactam allergies. Specifically, it notes that penicillin is the most commonly reported antibiotic allergy. It describes the hapten concept of small molecules like beta-lactams binding covalently to proteins to form antigen complexes. Skin testing and in vitro tests are used to investigate immediate IgE-mediated allergies, while patch testing is used for delayed reactions.
This document provides an overview of intravenous immunoglobulin (IVIG) therapy. It discusses the structure and classes of immunoglobulins, mechanisms of action including neutralization, opsonization, and modulation of immune cells. It also covers the manufacturing process, pharmacokinetics, indications for use in primary immunodeficiencies and autoimmune diseases, dosing, administration, and adverse effects. The differences between IVIG products are also reviewed.
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Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
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share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
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5. Definition
• characterized by selective
infiltration of eosinophils
in
• stomach, small intestine,
or both with variable
involvement of esophagus,
large intestine, or both.
Simon D, Wardlaw A, Rothenberg ME. Organ-specific eosinophilic disorders of the skin, lung, and
gastrointestinal tract. The Journal of allergy and clinical immunology. 2010;126(1):3-13.
6. Classification
Primary subtypes
• Atopic
• Nonatopic
• Familial primary subtypes
Secondary subtypes
Eosinophilic disorders
• Hypereosinophilic syndrome
Noneosinophilic disorders
• Celiac disease
• Connective tissue disease
(scleroderma)
• Iatrogenic
• Infection
• Inflammatory bowel disease
• Vasculitis (Churg-Strauss
syndrome)
Mucosal, Muscularis,Serosal
Simon D, Wardlaw A, Rothenberg ME. Organ-specific eosinophilic disorders of the skin, lung, and
gastrointestinal tract. The Journal of allergy and clinical immunology. 2010;126(1):3-13.
7. Epidemiology
• Wide age range
Infancy Seventh decades
• Most commonly
Third Fifth decades
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North
America. 2014;43(2):317-27.
8. Epidemiology
• An electronic survey sent to North American
Allergists and Pediatric Gastroenterologists indicate
prevalence for EGE of 22 to 28 per 100,000 persons
Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North
America. 2014;43(2):317-27.
Spergel JM, Book WM, Mays E, Song L, Shah SS, Talley NJ, et al. Variation in prevalence, diagnostic criteria,
and initial management options for eosinophilic gastrointestinal diseases in the United States. Journal of
pediatric gastroenterology and nutrition. 2011;52(3):300-6.
9. Etiology
• Idiopathic
• Allergic mechanism
1. Increased total IgE and Food specific IgE
levels
2.Increased T helper 2 associated cytokines
Simon D, Wardlaw A, Rothenberg ME. Organ-specific eosinophilic disorders of the skin, lung, and
gastrointestinal tract. The Journal of allergy and clinical immunology. 2010;126(1):3-13.
10. Etiology
• Data from clinical studies suggest that patients with
eosinophilic gastroenteritis have increased secretion
of IL-4 and IL-5 by peripheral blood T cells.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
11. Etiology
• T cells derived from the lamina propria of the
duodenum of patients with EGID preferentially
secrete Th2 cytokines (especially IL-13) when
stimulated with milk proteins
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
12. Etiology
• Mast cells are also increased in EGID.
• Recent murine model of oral allergen–induced
diarrhea has indicated that mast cells have a critical
role in the pathogenesis of allergic diarrhea in EGID.
Brandt EB, Strait RT, Hershko D, et al. Mast cells are required for experimental oral allergen-induced diarrhea. J Clin Invest
2003;112:1666-77.
13. Hogan SP, Mishra A, Brandt EB, Foster PS, Rothenberg ME. A critical role for eotaxin in experimental oral antigen-induced eosinophilic
gastrointestinal allergy. Proceedings of the National Academy of Sciences of the United States of America. 2000;97(12):6681-6.
Allergen sensitized
mice
Challange with Oral allergen
•Marked allergen-specific IgG1
and IgE, Th2-type (IL-4 and IL-5)
cytokine production
•Eosinophil accumulation in the
blood and small intestine
Genetic absence
of eotaxin mice
(se (sensitized mice)
Challange with Oral allergen
•Eosinophil recruitment into
small intestine was ablated
•Enhanced eosinophil
accumulation in the blood
compared with wild-type mice.
Genetic absence
of IL-5 mice
(sensitized mice)
Challange with Oral allergen
• Partial eosinophil
accumulation small
intestine
•Decline in circulating
eosinophil levels
14. Hogan SP, Mishra A, Brandt EB, Foster PS, Rothenberg ME. A critical role for eotaxin in experimental oral antigen-induced eosinophilic
gastrointestinal allergy. Proceedings of the National Academy of Sciences of the United States of America. 2000;97(12):6681-6.
Allergen sensitized
mice
Challange with Oral allergen
•Marked allergen-specific IgG1
and IgE, Th2-type (IL-4 and IL-5)
cytokine production
•Eosinophil accumulation in the
blood and small intestine
Challange with Oral allergen
•Eosinophil recruitment into
small intestine was ablated
•Enhanced eosinophil
accumulation in the blood
compared with wild-type mice.
Challange with Oral allergen
• Partial eosinophil
accumulation small
intestine
•Decline in circulating
eosinophil levels
These results establish that the accumulation of
gastrointestinal eosinophils is antigen induced, can occur
independent of IL-5.
Genetic absence
of eotaxin mice
(se (sensitized mice)
Genetic absence
of IL-5 mice
(sensitized mice)
15. Eotaxin
CC Chemokine Original name Chemokine
receptor
Major function
CCL 11 Eotaxin CCR3 Eosinophil,
Basophil,TH2
recruitment
CCL 24 Eotaxin-2 CCR3 Eosinophil,
Basophil,TH2
recruitment
CCL 26 Eotaxin-3 CCR3 Eosinophil,
Basophil,TH2
16. Hogan SP, Mishra A, Brandt EB, Royalty MP, Pope SM, Zimmermann N, et al. A pathological function for eotaxin and eosinophils in
eosinophilic gastrointestinal inflammation. Nature immunology. 2001;2(4):353-60.
•(OVA)-alum–sensitized mice were challenged with 2 doses of oral OVA
in the form of enteric-coated beads
•Mice developed eosinophil-associated GI dysfunction, including
gastromegaly, delayed food transit, and weight loss, all strongly
dependent on the chemokine eotaxin-1
17. Hogan SP, Mishra A, Brandt EB, Royalty MP, Pope SM, Zimmermann N, et al. A pathological function for eotaxin and eosinophils in
eosinophilic gastrointestinal inflammation. Nature immunology. 2001;2(4):353-60.
•(OVA)-alum–sensitized mice
were challenged with 2 doses
of oral OVA in the form of
enteric-coated beads
•Mice developed eosinophil-
associated GI dysfunction,
including gastromegaly,
delayed food transit, and
weight loss, all strongly
dependent on the chemokine
eotaxin-1
Placebo
18. Clinical Presentation
• Approximately 80% have symptoms for several years
• Occasionally, the disease may manifest itself as an
acute abdomen or bowel obstruction
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
19. Clinical Presentation
Children & Adolescent
• Growth retardation
• Failure to thrive
• Delayed puberty or
amenorrhea.
Adults
• Abdominal pain
• Diarrhea
• Dysphagia
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
20. Clinical Presentation
• Present with a constellation of symptoms that are
related to the degree and area of the GI tract
affected
1. Mucosal layer
2. Muscularis layer
3. Serosal layer
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
21. Clinical Presentation
Mucosal disease
• Vomiting
• Abdominal pain
• Diarrhea
• Blood loss in stools
• Iron deficiency anemia
• Malabsorption
• Protein-losing enteropathy
• Failure to thrive
Chehade M, Magid MS, Mofidi S, Nowak-Wegrzyn A, Sampson HA, Sicherer SH. Allergic eosinophilic
gastroenteritis with protein-losing enteropathy: intestinal pathology, clinical course, and long-term follow-
up. Journal of pediatric gastroenterology and nutrition. 2006;42(5):516-21.
22. Clinical Presentation
Muscle layer disease
Bowel wall thickening & Intestinal obstruction
Cramping & abdominal pain associated with nausea
and vomiting
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
23. Clinical Presentation
Subserosal disease
• Eosinophilic exudate ascites
• Abundant peripheral eosinophilia
• Serosal and visceral peritoneal inflammation leads to
leakage of fluids
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
24. Clinical Presentation
• EGE can occasionally involve the hepatobiliary
tree.
: Pancreatitis
: Cholangitis
Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North
America. 2014;43(2):317-27.
25. Diagnostic evaluation
• Laboratory
• Allergic evaluation
• Radiographic evaluation
• Endoscopic and Pathology
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
26. Laboratory
• Complete blood count
• Serum albumin
• Fecal protein
• Stool examination
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
27. Complete Blood Count
Peripheral blood eosinophilia Iron deficeicy anemia
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
28. Complete Blood Count
Peripheral blood eosinophilia
Layer Average count
eosinophil/microltr
Mucosal 2,000
Muscular 1,000
Serosa 8,000
• Found in 20%-80% of cases
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
29. Fecal protein
• Alpha1-antitrypsin in a 24-h feces collection
• Identify the inability to digest and absorb proteins in
GI tract.
• The normal value is 0-54 mg/dL.
• Patients with eosinophilic gastroenteritis have
elevated alpha1- antitrypsin in their feces.
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
30. Stool examination
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
•Should be performed to rule out parasitic infestation.
•Mild-to-moderate steatorrhea is present approximately
30% of patients.
31. Allergic evaluation
• Skin prick test
• Specific IgE antibody to inhaled & oral allergen
• Atopic patch testing
• Diagnostic trials of therapy with
1. Elimination
2. Oligoantigenic diets
3. Elemental (amino-acid based) diets
Khan S. Eosinophilic gastroenteritis. Best practice & research Clinical gastroenterology.
2005;19(2):177-98.
32. Radiographic evaluation
Chen MJ, Chu CH, Lin SC, Shih SC, Wang TE. Eosinophilic gastroenteritis: Clinical experience with 15 patients.
World JGastroenterol 2003; 9(12): 2813-2816
33. Endoscopic and Pathology
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
34.
35. Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North
America. 2014;43(2):317-27.
39. Histology of The Intestine
The organized tissues of the Peyer's patches and mesenteric lymph nodes (MLNs) are involved in the
induction of immunity and tolerance, whereas the effector sites are scattered throughout the lamina propria
and epithelium of the mucosa. Both the Peyer's patches and villus lamina propria are drained by afferent
lymphatics that go to the MLNs. SED, subepithelial dome; TDA, thymus-dependent area.
40. Gastrointestinal Eosinophils Under Homeostatic
Healthy States
• Eosinophils are present at low levels in
numerous tissues
• In biopsy and autopsy specimens, organs that
normally demonstrate tissue eosinophils at
substantial levels are
- GI tract - Lymph nodes
- Spleen - Thymus
DeBrosse CW, Case JW, Putnam PE, Collins MH, Rothenberg ME. Quantity and distribution of eosinophils in
the gastrointestinal tract of children. Pediatric and developmental pathology : the official journal of the
Society for Pediatric Pathology and the Paediatric Pathology Society. 2006;9(3):210-8.
41. Gastrointestinal Eosinophils Under Homeostatic
Healthy States
• Eosinophils throughout the GI tract of
conventional healthy mice : normally present
in the lamina propria of the stomach, small
intestine, cecum, and colon.
• Eosinophils are not normally present in Peyer
patches or intraepithelial locations.
• Eosinophils are frequently infiltrate in Peyer
patches regions in EGID.
Mishra A, Hogan SP, Lee JJ, et al. Fundamental signals that regulate eosinophil homing to the gastrointestinal tract. J Clin
Invest 1999;103: 1719-27
Rothenberg ME, Mishra A, Collins MH, et al. Pathogenesis and clinical features of eosinophilic esophagitis. J Allergy Clin
Immunol 2001;108:891-4.
43. DeBrosse CW, Case JW, Putnam PE, Collins MH, Rothenberg ME. Quantity and distribution of eosinophils in
the gastrointestinal tract of children. Pediatric and developmental pathology : the official journal of the
Society for Pediatric Pathology and the Paediatric Pathology Society. 2006;9(3):210-8.
44. Histology of The Intestine
Normal Duodenum histology
Pathologyoutlines.com
45. Histology of The Intestine
Normal Colon histology
Pathologyoutlines.com
46. Histology of The Intestine
Normal Colon histology
Embryology.med.unsw.ed
47. Endoscopic and Pathology
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
Dense eosinophilic
infiltrates in the lamina
propria and mucosae
48. Endoscopic and Pathology
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
Dense eosinophilic
infiltrates in the lamina
propria and mucosae
49. Endoscopic and Pathology
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
Dense eosinophilic
infiltrates in the lamina
propria and mucosae
51. No standards exist for diagnosis
The following findings support the diagnosis
1.Presence of elevated eosinophils in
biopsy specimens from the GI tract
wall
2. Infiltration of eosinophils within
intestinal crypts and gastric glands
3. Lack of involvement of other organs
4. Exclusion of other causes of
eosinophilia
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
52. g
•Gross Endoscoopic finding
are often normal
•Endoscopic bx should be
obtained from 5-6 site of
afffected organ
•In stomach eosinophil
levels>30 eo/HPF
differrentiate eosinophilic
gastritis from normal adult
control
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North
America. 2014;43(2):317-27.
53. No standards exist for diagnosis
Four criteria are required for the diagnosis
1. Presence of gastrointestinal
symptoms
2. Eosinophilic infiltration of
gastrointestinal tract
3. Exclusion of parasitic disease
4. Absence of other systemic
involvement
Ingle SB, Hinge Ingle CR. Eosinophilic gastroenteritis: an unusual type of gastroenteritis. World journal of
gastroenterology : WJG. 2013;19(31):5061-6.
54. Treatment
• Eliminating the dietary intake of foods
implicated by skin-prick tests
• Drugs
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
55. Chehade M, Magid MS, Mofidi S, Nowak-Wegrzyn A, Sampson HA, Sicherer SH. Allergic eosinophilic gastroenteritis with
protein-losing enteropathy: intestinal pathology, clinical course, and long-term follow-up. Journal of pediatric
gastroenterology and nutrition. 2006;42(5):516-21.
6 6 Pts with AEG
with PLE
6 Pts with
AEG
5 Pts with
Abd S/S
with Bx -ve
Medical records of patients were reviewed for
clinical history, physical ,laboratory values.
56. Chehade M, Magid MS, Mofidi S, Nowak-Wegrzyn A, Sampson HA, Sicherer SH. Allergic eosinophilic
gastroenteritis with protein-losing enteropathy: intestinal pathology, clinical course, and long-term follow-
up. Journal of pediatric gastroenterology and nutrition. 2006;42(5):516-21.
57. Chehade M, Magid MS, Mofidi S, Nowak-Wegrzyn A, Sampson HA, Sicherer SH. Allergic eosinophilic
gastroenteritis with protein-losing enteropathy: intestinal pathology, clinical course, and long-term follow-
up. Journal of pediatric gastroenterology and nutrition. 2006;42(5):516-21.
58. Chehade M, Magid MS, Mofidi S, Nowak-Wegrzyn A, Sampson HA, Sicherer SH. Allergic eosinophilic
gastroenteritis with protein-losing enteropathy: intestinal pathology, clinical course, and long-term follow-
up. Journal of pediatric gastroenterology and nutrition. 2006;42(5):516-21.
6 Pts with AEG
with PLE
•Pts had excellent response to therapy with amino
acid based formula and tolerated gradual
introduction of some foods with time.
59. Eliminating the dietary intake of
foods
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
Dietary modification
Disease remission
Specific food groups are slowly reintroduced, at
about 3-week intervals for each food group
Endoscopy is performed every 3 months to
identify either sustained remission or disease
flare-up
61. Treatment
• Cromoglycate
• Montelukast
• Ketotifen
• Suplatast tosilate
• Mycophenolate mofetil (inosine
monophosphate dehydrogenase inhibitor)
• Alternative Chinese medicines
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
Generally unsuccessful
62. Treatment
• Suplatast tosilate
:Anti-Th2 drug
:Inhibits the expression of Th2 cytokines, such
as IL-5.
:Successful treatment of EGE with suplatast
has been described in 2 single patient case
reports.
Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North
America. 2014;43(2):317-27.
64. Antiinflammatory drugs
• If diet restriction is not feasible or has failed to
improve the disease.
• As with treatment for asthma, topical steroids have a
better benefit-to-risk effect than systemic steroids.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
65. Anti-inflammatory drugs
• Systemic steroid therapy
: A course of 2 to 6 weeks with relatively low doses
seems to work better than a 7-day course of burst
glucocorticoids.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
66. Anti-inflammatory drugs
• Topical glucocorticoids
:Budesonide tablets (Entocort EC) are designed to
deliver the drug to the ileum and proximal colon.
:As with treatment for asthma, topical steroids have
a better benefit-to-risk effect than systemic steroids.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
67. Patient profile: A 32-year-old Caucasian woman
Present illness: Admitted to hospital with complaints of recurrent
cramping pain in the upper abdomen associated
with nausea and non-bloody diarrhoea. She had
lost 4 kg in weight.
Past history : No history of food intolerance, allergy, travel
to tropical areas, or prior medication
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
68. Physical examination:
Slightly enlarged belly with normal bowel sounds.
Laboratory data:
Hb 8.1 mmol/l
WBC 29x109/l Eosinophil 69%.
Total serum protein 67.3 g/l.
Immunoglobulins:normal.
Echography : ascitic fuid.
Upper gastrointestinal endoscopy (biopsies):normal
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
69. Problem list: Eosinophilia and Ascitic fuid
Strong suspicious :Eosinophilic gastroenteritis of the serosal
type
Treatment: Prednisolone 40 mg/day was initiated
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
70. Clinical course:
- A rapid dissolution of complaints and a decrease in the
eosinophilic count.
- After tapering and eventually stopping the prednisone
medication, the patient remained without complaints for
over 1 year.
- Then she experienced more complaints of diarrhoea
and ascites. Total eosinophilic count was markedly
increased
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
71. Clinical course:
- To ascertain the diagnosis of eosinophilic gastroenteritis
- A full-thickness surgical antrum biopsy was taken.
- Histology revealed eosinophilic granulocytic infiltration in
the muscular mucosa .
- In the ascitic fuid, an inflammatory response with
eosinophilic granulocytes
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
72. Clinical course:
-Prednisone was started at a dose of 25 mg, with rapid
dissolution of complaints and peripheral eosinophilia.
-When the prednisone dose was tapered to 5 mg/day, the
patient complained of crampy abdominal pain and
diarrhoea.
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
73. Clinical course:
-We gave budesonide tablets, normally used for the
preparation of the budesonide clysma.
-Starting dose was 4 mg daily, with a good clinical effect.
- With this treatment regimen, the patient has been in
remission for more than 2 years.
Tan AC, Kruimel JW, Naber TH. Eosinophilic gastroenteritis treated with non-enteric-coated budesonide
tablets. European journal of gastroenterology & hepatology. 2001;13(4):425-7.
74. Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North America.
2014;43(2):317-27.
Initiated using prednisone at 0.4 to
0.8 mg/kg each morning
+
Solubilized budesonide is begun at 9
mg orally daily, taken at bedtime on
an empty stomach
Prednisone is tapered
over the next 2 or more
weeks
clinical symptoms
are controlled
•One to 2 months after the
prednisone has been stopped
•Budesonide dose is slowly tapered
over an additional 2 to 4 months to
the minimum required dose.
clinical symptoms
are controlled
75. Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North America.
2014;43(2):317-27.
Initiated using prednisone at 0.4 to
0.8 mg/kg each morning
+
Solubilized budesonide is begun at
9mg orally daily, taken at bedtime
on an empty stomach
Prednisone is tapered
over the next 2 or more
weeksclinical symptoms
are controlled
•One to 2 months after the
prednisone has been stopped
•Budesonide dose is slowly tapered
over an additional 2 to 4 months to
the minimum required dose.
clinical symptoms
are controlled
76. Foroughi S, Foster B, Kim N, Bernardino LB, Scott LM, Hamilton RG, et al. Anti-IgE treatment of eosinophil-associated
gastrointestinal disorders. The Journal of allergy and clinical immunology. 2007;120(3):594-601.
Nine EGE pts
3 wks pre
Omalizumab
baseline screen
16 wks
Omalizumab q 2 wks
Repeat all
baseline study
77.
78. Foroughi S, Foster B, Kim N, Bernardino LB, Scott LM, Hamilton RG, et al. Anti-IgE treatment of eosinophil-associated
gastrointestinal disorders. The Journal of allergy and clinical immunology. 2007;120(3):594-601.
Omalizumab was
associated with decrease
in absolute eosinophil
count
:at week 16 (34%, P = 0.004)
: combined weeks 12 to 16
(42%, P = 0.012)
79. Foroughi S, Foster B, Kim N, Bernardino LB, Scott LM, Hamilton RG, et al. Anti-IgE treatment of eosinophil-associated
gastrointestinal disorders. The Journal of allergy and clinical immunology. 2007;120(3):594-601.
Tissue eosinophils decreased in the duodenum (59%)
and gastric antrum (69%) but did not reach statistical
significance (P 0.074 and 0.098, respectively).
80. Foroughi S, Foster B, Kim N, Bernardino LB, Scott LM, Hamilton RG, et al. Anti-IgE treatment of eosinophil-associated
gastrointestinal disorders. The Journal of allergy and clinical immunology. 2007;120(3):594-601.
Symptom scores were
decreased at both the
midstudy (63%) and end
of study (70%) time points
(P < .005 for both)
81. Anti–IL-5
Prussin C. Eosinophilic gastroenteritis and related eosinophilic disorders. Gastroenterology clinics of North America.
2014;43(2):317-27.
Reslizumab
• an open-label clinical trial of
reslizumab (SCH55700) was
undertaken in 4 subjects
with EGE.
• Reslizumab suppressed blood
eosinophilia in a significant
manner.
• tissue eosinophilia was only
modestly suppressed
•EGE symptoms were minimally
affected.
84. Introduction
• Eosinophils accumulate in the colon of patients with
a variety of disorders
: Eosinophilic gastroenteritis
: Allergic colitis of infancy
: Infections (e.g., pinworms, dog hookworms)
: Drug reactions
: Vasculitis (e.g., Churg-Strauss syndrome)
: IBD
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
86. Allergic colitis in infancy
• Cow’s milk and soy proteins are the foods most
frequently implicated in allergic colitis of infancy
• This condition may occur more often in infants
exclusively breastfed and can even occur in infants
fed with protein hydrolysate formulas
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
87. Allergic colitis in infancy
• Dietary protein– induced proctocolitis of infancy
syndrome
• Most common cause of bloody stools in the first year
of life
• An early expression of protein-induced enteropathy
or protein-induced enterocolitis syndrome.
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
88. Etiology
• A non- IgE–associated disease
• Some studies point to a T lymphocyte– mediated
process.
• Exact immunologic mechanisms responsible for this
condition have not been identified.
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
89. Clinical Presentation
• Bimodal age distribution
:Infantile
:Early adolescent and Adulthood
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
90. Clinical Presentation
• Diarrhea
• Abdominal pain
• Weight loss
• Anorexia
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
91. Differential diagnosis of EC
Okpara N, Aswad B, Baffy G. Eosinophilic colitis. World journal of gastroenterology : WJG. 2009;15(24):2975-9.
92. Diagnostic evaluation
• No single test is the “gold standard” for diagnosis
• Peripheral blood eosinophilia or eosinophils in the
stool suggests eosinophilic colitis.
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
93. Endoscopic and Pathology
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
• Patchy erythema
• Loss of vascularity,
• Lymphonodular
hyperplasia
mostly localized to the
rectum but might
extend to the entire
colon
Gastroenterol Res Pract. 2011
94. Endoscopic and Pathology
Okpara N, Aswad B, Baffy G. Eosinophilic colitis. World journal of gastroenterology : WJG. 2009;15(24):2975-9.
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical immunology.
2004;113(1):11-28.
• Patchy erythema
• Loss of vascularity,
• Lymphonodular
hyperplasia
mostly localized to the
rectum but might
extend to the entire
colon
96. Endoscopic and Pathology
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical immunology.
2004;113(1):11-28.
• Overall architecture of
the mucosa is well
preserved
• Focal aggregates of
eosinophils in the lamina
propria, crypt epithelium,
and muscularis mucosa,
• Multinucleated giant cells
are occasionally present
in the submucosa.
Okpara N, Aswad B, Baffy G. Eosinophilic colitis. World journal of gastroenterology : WJG. 2009;15(24):2975-9.
97. Endoscopic and Pathology
Gastroenterol Res Pract. 2011
Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
• Overall architecture of
the mucosa is well
preserved
• Focal aggregates of
eosinophils in the lamina
propria, crypt epithelium,
and muscularis mucos.,
• Multinucleated giant cells
are occasionally present
in the submucosa.
98. Treatment
• Eosinophilic colitis of infancy
:Benign disease
:Withdrawal of the offending protein trigger from the
diet
-->the gross blood in the stools usually resolves
within 72 hours
--> occult blood loss may persist longer
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
99. Treatment
• Eosinophilic colitis of older
:Usually requires medical management because IgE
associated triggers are rarely identified.
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
100. Treatment
• Eosinophilic colitis of older
: Cromoglycate ,Montelukast,Histamine receptor
antagonists : generally unsuccessful
:Aminosalicylates and systemic or topical
glucocorticoids :typically used and appear to be
efficacious
:Azathioprine or 6-mercaptopurine: in severe cases
Rothenberg ME. Middleton's Allergy ; 8th edition. 2014. p. 1095-1106
101. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
102. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
103. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
EGID are
generally tissue-
specific problems
HES tends to
involve the heart,
lungs, and skin
104. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
Eosinophilic esophagitis
(EoE), a disease
mechanistically linked with
eosinophilic airway
inflammation (asthma).
105. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
Eosinophilic
gastroenteritis,
specific regions of
the GI tract may be
selectively involved
106. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
107. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
108. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
109. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
110. Rothenberg ME. Eosinophilic gastrointestinal disorders (EGID). The Journal of allergy and clinical
immunology. 2004;113(1):11-28.
Representative electron photomicrographs from the jejunum of placebo- (a) and oral allergen–
challenged (b–d) mice. (a–c) Eosinophils (arrows) are observed within the lamina propria (LP)
of the villi. The epithelium (Ep) and basement membrane (BM) are labeled for orientation. An
increased number of eosinophils is apparent after oral allergen treatment. (d) A higher power magnification
of an eosinophil with abundant granules containing the characteristic electron-dense cores
and matrices is shown. The eosinophil is within the reticular connective tissue of lamina propria, in
close proximity to two enteric nerves. The enteric nerves are swollen, containing enlarged axonal
chambers with variable loss of internal organelles, indicative of axonal necrosis (filled arrowhead).
Inset depicts a normal, intact enteric nerve bundle with the dense core granules of the surrounding
Schwann cell from a placebo-challenged mouse. Original magnifications: ×2680 (a–c) and ×16,900 (d).