This research article studied the use of cerebrospinal fluid (CSF) adenosine deaminase (ADA) levels to differentiate tuberculous meningitis (TBM) from other causes of meningitis in HIV-infected patients. The study found that CSF ADA levels were significantly higher in patients with TBM compared to other causes of meningitis. Using a cutoff value of 6 IU/L, CSF ADA level determination was found to be a highly specific and fairly sensitive test for diagnosing TBM in HIV positive patients. The test provides a rapid and cost-effective diagnostic method for TBM, which is important for disease management in developing countries with a high burden of tuberculosis.
study of hematological paremeter in sepsis patients and its prognostic implic...RahulGupta1687
The current study was a cross-sectional study with a sample size of 117 patients with sepsis. Various hematological parameters of all the patients were obtained on day of admission (day 1) and seventh day (day 7) using hemogram reports and the difference of their statistical mean and standard deviation was estimated.
International Journal of Pharmaceutical Science Invention (IJPSI) is an international journal intended for professionals and researchers in all fields of Pahrmaceutical Science. IJPSI publishes research articles and reviews within the whole field Pharmacy and Pharmaceutical Science, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
study of hematological paremeter in sepsis patients and its prognostic implic...RahulGupta1687
The current study was a cross-sectional study with a sample size of 117 patients with sepsis. Various hematological parameters of all the patients were obtained on day of admission (day 1) and seventh day (day 7) using hemogram reports and the difference of their statistical mean and standard deviation was estimated.
International Journal of Pharmaceutical Science Invention (IJPSI) is an international journal intended for professionals and researchers in all fields of Pahrmaceutical Science. IJPSI publishes research articles and reviews within the whole field Pharmacy and Pharmaceutical Science, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Background & objectives: In Odisha, several cases of dengue virus infection were detected for the first time in 2010, the importance of dengue as a serious mosquito-borne viral infection was felt only in 2011 with the reporting of many more positive cases. This retrospective three year study was done to find out the seroprevalence of dengue Igm antibody and to know the predominant serotype of dengue virus among the patients suspected to have dengue virus infection in a tertiary care hospital in southern Odisha, India.
Methods: Blood samples from clinically suspected dengue cases admitted in the Medicine and Paediatrics departments of a tertiary care hospital were collected. These were processed for detection of dengue specific IgM antibody, carried out by the ELISA method. Dengue IgM antibody positive serum samples were tested for serotypic identification.
Results: of the 5102 samples tested, 1074 (21.05 %) were positive for dengue IgM. Maximum numbers of cases were found in 2012. Majority (47.86 %) of cases were detected in the month of September. The most common affected age group was 11 to 20 yr. DENV1 and DENV2 were the detected serotypes.
Interpretation & conclusions: Rapid increase in the dengue cases in 2012 became a public health concern as majority of cases were affecting the young adolescents. Most of the cases were reported in post-monsoon period indicating a need for acceleration of vector control programmes prior to arrival of monsoon.
Key words Dengue virus - IgM antibody - seroprevalence - serotype - vector control
Dr. Rahul VC Tiwari - Fellowship In Orthognathic Surgery - Jubilee Mission Medical College Hospital and Research Center, Thrissur, Kerala - 29th publication iosr jdms 3rd name
Vohra P, Jamatia K, Subhada B, Tiwari RV, Althaf MS, Jain C. Correlation of CD4 counts with oral and systemic manifestations in HIV patients. J Family Med Prim Care 2019;8:3247-52.
Determination of baseline Widal titre among apparently healthy population in ...IOSR Journals
Present study was conducted to determine the baseline widal titer of healthy population of Dehradun city. A total of 300 serum samples were collected from healthy individual with no history of fever and who had not received any vaccination for enteric fever. Tube agglutination test was done with commercially available antigens which contained the Salmonella enterica serovar typhi O and H antigens, the Salmonella enterica serovar paratyphi AH antigen and paratyphi BH antigen. In the present study an agglutination titer for TO – 1:20 is 28%, for 1:40 is 24%, followed by 1:80 and 1: 160 which is 10%, 4% respectively. The highest sample with an anti-H titre found with 1:20 (22%) followed by 1:40(17%). Based upon the results of the study it has been recommended that a single Widal can be significant in an endemic region when higher titre (1:160) is obtained.
Etiologia de la celulitis y Predicción clínica de la enfermedad Estreptocócic...Alex Castañeda-Sabogal
Etiologia de la celulitis. Estudio prospectivo y predicción clínica de la infeccion por Estreptococcus basado en la frecuencia encontrada de las especies de estreptococo
ABSTRACT- Aim: The present study was to know the seroprevalence of Hepatitis C virus among indoor and outdoor patients of a teaching ter-tiary care hospital in North India. Study design: Place and duration of study: Department of Microbiology, Pt. B. D. Sharma PGIMS Rohtak, Haryana, India, between August 2013 to July 2014. Methodology: This is a retrospective study performed on blood samples collected from patients of all ages and both sexes. Commercially available Erba Lisa Hepatitis C ELISA kits were used which detects anti-HCV IgG antibodies. Statistical analysis was performed when two or more variables were needed to compare. SPSS version 17 was used to calculate P value. Results: The prevalence of HCV was 3.74% in our study. 72.7% were from males and 27.3% were from females. Highest number of positive sam-ples was from 11-20 years age group (5.6%). The positivity for anti-HCV antibodies was higher in indoor samples (7.8%) as compared to outdoor samples (2.3%). Conclusion: Strict need to follow universal precautions for HCV control and education of public so that high risk activities should be controlled. KEYWORDS: Hepatitis C virus, Seroprevalence, anti-HCV antibodies, Indoor, HCV control
Assessment of Renal Function and Serum Levels of Alpha Tocopherol in HIV Sero...paperpublications3
Abstract: Increased Oxidative Stress markers in HIV/AIDS Patients may be as a result of free radicals generation and evidence is accumulating that Highly Active Antiretroviral Therapy (HAART) mimics AIDS progression but may be costly due to its Nephrotoxicity. In this research serum levels of Alpha tocopherol ( α- tocopherol), Urea, Creatinine as well as CD4 Counts were measured in 70 HIV Seropositive Patients (40 on HAART and 30 HAART-Naïve) and Thirty (30) apparently healthy individuals as controls in Federal Medical Centre Katsina, Nigeria.CD4 Counts, Serum Levels of Alpha tocopherol, Urea and Creatinine of HIV-HAART and HAART Naïve were 0.72±0.27mg/dl, 16.8±5.6 mmol/l, 237±123 µmol/l and 646±254cell/µl and 0.3±0.1mg/dl, 10.4±2.9 mmol/l, 91±26 µmol/l and 364±17 cell/ µl respectively. There were significantly (p<0.05) increased CD4 counts, serum levels of Alpha tocopherol, Urea and Creatinine in HIV/AIDS Patients on HAART compared to HAART- Naive. This is an indication that HIV/AIDS are predisposed to oxidative stress and that also HAART has debilitating effects on kidneys.
Background & objectives: In Odisha, several cases of dengue virus infection were detected for the first time in 2010, the importance of dengue as a serious mosquito-borne viral infection was felt only in 2011 with the reporting of many more positive cases. This retrospective three year study was done to find out the seroprevalence of dengue Igm antibody and to know the predominant serotype of dengue virus among the patients suspected to have dengue virus infection in a tertiary care hospital in southern Odisha, India.
Methods: Blood samples from clinically suspected dengue cases admitted in the Medicine and Paediatrics departments of a tertiary care hospital were collected. These were processed for detection of dengue specific IgM antibody, carried out by the ELISA method. Dengue IgM antibody positive serum samples were tested for serotypic identification.
Results: of the 5102 samples tested, 1074 (21.05 %) were positive for dengue IgM. Maximum numbers of cases were found in 2012. Majority (47.86 %) of cases were detected in the month of September. The most common affected age group was 11 to 20 yr. DENV1 and DENV2 were the detected serotypes.
Interpretation & conclusions: Rapid increase in the dengue cases in 2012 became a public health concern as majority of cases were affecting the young adolescents. Most of the cases were reported in post-monsoon period indicating a need for acceleration of vector control programmes prior to arrival of monsoon.
Key words Dengue virus - IgM antibody - seroprevalence - serotype - vector control
Dr. Rahul VC Tiwari - Fellowship In Orthognathic Surgery - Jubilee Mission Medical College Hospital and Research Center, Thrissur, Kerala - 29th publication iosr jdms 3rd name
Vohra P, Jamatia K, Subhada B, Tiwari RV, Althaf MS, Jain C. Correlation of CD4 counts with oral and systemic manifestations in HIV patients. J Family Med Prim Care 2019;8:3247-52.
Determination of baseline Widal titre among apparently healthy population in ...IOSR Journals
Present study was conducted to determine the baseline widal titer of healthy population of Dehradun city. A total of 300 serum samples were collected from healthy individual with no history of fever and who had not received any vaccination for enteric fever. Tube agglutination test was done with commercially available antigens which contained the Salmonella enterica serovar typhi O and H antigens, the Salmonella enterica serovar paratyphi AH antigen and paratyphi BH antigen. In the present study an agglutination titer for TO – 1:20 is 28%, for 1:40 is 24%, followed by 1:80 and 1: 160 which is 10%, 4% respectively. The highest sample with an anti-H titre found with 1:20 (22%) followed by 1:40(17%). Based upon the results of the study it has been recommended that a single Widal can be significant in an endemic region when higher titre (1:160) is obtained.
Etiologia de la celulitis y Predicción clínica de la enfermedad Estreptocócic...Alex Castañeda-Sabogal
Etiologia de la celulitis. Estudio prospectivo y predicción clínica de la infeccion por Estreptococcus basado en la frecuencia encontrada de las especies de estreptococo
ABSTRACT- Aim: The present study was to know the seroprevalence of Hepatitis C virus among indoor and outdoor patients of a teaching ter-tiary care hospital in North India. Study design: Place and duration of study: Department of Microbiology, Pt. B. D. Sharma PGIMS Rohtak, Haryana, India, between August 2013 to July 2014. Methodology: This is a retrospective study performed on blood samples collected from patients of all ages and both sexes. Commercially available Erba Lisa Hepatitis C ELISA kits were used which detects anti-HCV IgG antibodies. Statistical analysis was performed when two or more variables were needed to compare. SPSS version 17 was used to calculate P value. Results: The prevalence of HCV was 3.74% in our study. 72.7% were from males and 27.3% were from females. Highest number of positive sam-ples was from 11-20 years age group (5.6%). The positivity for anti-HCV antibodies was higher in indoor samples (7.8%) as compared to outdoor samples (2.3%). Conclusion: Strict need to follow universal precautions for HCV control and education of public so that high risk activities should be controlled. KEYWORDS: Hepatitis C virus, Seroprevalence, anti-HCV antibodies, Indoor, HCV control
Assessment of Renal Function and Serum Levels of Alpha Tocopherol in HIV Sero...paperpublications3
Abstract: Increased Oxidative Stress markers in HIV/AIDS Patients may be as a result of free radicals generation and evidence is accumulating that Highly Active Antiretroviral Therapy (HAART) mimics AIDS progression but may be costly due to its Nephrotoxicity. In this research serum levels of Alpha tocopherol ( α- tocopherol), Urea, Creatinine as well as CD4 Counts were measured in 70 HIV Seropositive Patients (40 on HAART and 30 HAART-Naïve) and Thirty (30) apparently healthy individuals as controls in Federal Medical Centre Katsina, Nigeria.CD4 Counts, Serum Levels of Alpha tocopherol, Urea and Creatinine of HIV-HAART and HAART Naïve were 0.72±0.27mg/dl, 16.8±5.6 mmol/l, 237±123 µmol/l and 646±254cell/µl and 0.3±0.1mg/dl, 10.4±2.9 mmol/l, 91±26 µmol/l and 364±17 cell/ µl respectively. There were significantly (p<0.05) increased CD4 counts, serum levels of Alpha tocopherol, Urea and Creatinine in HIV/AIDS Patients on HAART compared to HAART- Naive. This is an indication that HIV/AIDS are predisposed to oxidative stress and that also HAART has debilitating effects on kidneys.
Tarannum Yasmin1*, Krishan Nandan2
1Associate Professor, Department of Microbiology, Katihar Medical College Katihar, Bihar, India
2Assistant Professor, Department of Microbiology, Katihar Medical College Katihar, Bihar, India
*Address for Correspondence: Dr Tarannum Yasmin, Associate Professor, Department of Microbiology, Katihar
Medical College, Katihar, Bihar, India
Received: 15 September 2016/Revised: 03 October 2016/Accepted: 22 October 2016
ABSTRACT- INTRODUCTION- HIV/AIDS pandemic is responsible for the resurgence of Tuberculosis worldwide,
resulting in increased morbidity and mortality. Co-infection with HIV infection leads to difficulty in both the diagnosis
and treatment of Tuberculosis, increased risk of death, treatment failure and relapse.
OBJECTIVE- The present study highlights the correlation of Pulmonary Tuberculosis in HIV positive cases and its
association with CD4 count.
MATERIAL & METHODS- A total of 72 known case of HIV were screened for tuberculosis infection by clinical
examination, radiology & ZN staining.
RESULTS AND CONCLUSIONS- From our study 60 (83.33%) were diagnosed as tuberculosis and 12 (16.67%) were
negative. More common HIV infection in case of male 48 (66.67%). Out of 60 tuberculosis infection 53 (88.33%) were
diagnosed as Pulmonary Tuberculosis and 7 (11.67%) were diagnosed as Extrapulmonary Tuberculosis. The result of
study emphasizes that co-infection of tuberculosis in HIV/AIDS patient is a concern. There is direct correlation between
CD4 counts depletion and Pulmonary Tuberculosis in HIV/AIDS patients.
Key-words- Pulmonary Tuberculosis, HIV, AIDS, CD4 count
Red cell alloimmunization in blood transfusion dependent Patients with Sickle...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
IOSR Journal of Pharmacy (IOSRPHR), www.iosrphr.org, call for paper, research...iosrphr_editor
IOSR Journal of Pharmacy (IOSRPHR), www.iosrphr.org, call for paper, research paper publishing, where to publish research paper, journal publishing, how to publish research paper, Call for research paper, international journal, publishing a paper, call for paper 2012, journal of pharmacy, how to get a research paper published, publishing a paper, publishing of journal, research and review articles, Pharmacy journal, International Journal of Pharmacy, hard copy of journal, hard copy of certificates, online Submission, where to publish research paper, journal publishing, international journal, publishing a paper
Serum Procalcitonin as a marker of infection in chronic kidney disease patien...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
Incidence of Tuberculosis in HIV Sero-positive Patients at HIV Clinic at Kamp...PUBLISHERJOURNAL
Incidence of Tuberculosis in HIV Sero-positive Patients at HIV Clinic at Kampala International University Teaching Hospital, Bushenyi District
Okello, Andrew
School of Allied Health Sciences Kampala International University-Western Campus
________________________________________
ABSTRACT
This study on the prevalence of TB among HIV sero-positive was carried at the HIV CLINIC of Kampala International University Teaching Hospital (KIUTH), Ishaka Bushenyi district. A retrospective cross-sectional study design was used to conduct this research. The study targeted all patients attending KIUTH HIV/TB clinic. A standard structured and semi-structured questionnaires were designed and pre-tested for validity and reliability at Kampala International University Teaching Hospital HIV/Tuberculosis clinic before being used for data collection. Data collection started by recruitment of qualified research assistants, appropriate training and orientation of the interviewers before the survey for example when reading the questions. Quantitative methods of data analysis was used in which data was presented in form of bar charts, graphs and tables. The prevalence of TB among HIV sero-positive patients attending HIV clinic at KIUTH stands at 8.06 per 100 participants. The study found that generally, people are aware about the modes of transmission of TB but there is still need for more awareness. Many patients are still not certain whether TB is curable in HIV patients. As seen from the above study, most of the people are not yet aware whether HIV goes hand in hand with tuberculosis. The prevalence of TB in HIV sero-positive attending HIV clinic at KIUTH is high. Generally, TB is affecting patients of all ages and most patients are still not aware if TB in HIV is curable. Most patients have a perception that all TB patients have HIV. Health workers in HIV clinic of KIU-TH should teach patients the modes of transmission and prevention of TB. KIUTH also need to provide easy access to TB screening services to patients. There is need for financial support by the government to the unemployed patients and low-income earners in order to curb TB infections.
Keywords: Tuberculosis, HIV, Sero-positive, Bushenyi District
________________________________________
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
ABDOMINAL TRAUMA in pediatrics part one.drhasanrajab
Abdominal trauma in pediatrics refers to injuries or damage to the abdominal organs in children. It can occur due to various causes such as falls, motor vehicle accidents, sports-related injuries, and physical abuse. Children are more vulnerable to abdominal trauma due to their unique anatomical and physiological characteristics. Signs and symptoms include abdominal pain, tenderness, distension, vomiting, and signs of shock. Diagnosis involves physical examination, imaging studies, and laboratory tests. Management depends on the severity and may involve conservative treatment or surgical intervention. Prevention is crucial in reducing the incidence of abdominal trauma in children.
Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
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.
Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
2. 2 Scientifica
Patients admitted with clinical features suggestive of meningitis
(fever, headache, vomiting, and altered consciousness)
HIV status detection done as per WHO guidelines
Positive Negative
Reclassified
Detailed history, examination, head NCCT,
and lumbar puncture for CSF study
Criterion (1) or (2) or (3) satisfied
Yes No
TBM with HIV Non-TBM with HIV
Excluded
Figure 1: Flow chart showing recruitment of patients.
2. Materials and Methods
HIV positive patients with meningitis admitted in our
department were included in the study. Informed consent
was taken from all patients. A detailed history and a clinical
examination were performed in all patients. Noncontrast CT
scan of the brain was performed followed by lumber puncture
under aseptic conditions. A case of tuberculous meningitis
was defined as
(1) Mycobacterium tuberculosis detected in CSF by Ziehl-
Neelsen staining or polymerase chain reaction for
Mycobacterium tuberculosis or
(2) tuberculosis at another anatomical site with charac-
teristic clinical and CSF findings or
(3) characteristic CSF findings with improvement after
starting antituberculous therapy.
In order to satisfy criterion (2) or (3), India ink staining, latex
agglutination test for Cryptococcus, fungal culture, VDRL
test, Gram staining, bacterial culture, and latex agglutination
test for Streptococcus pneumoniae, Neisseria meningitidis,
Haemophilus influenzae, and Listeria monocytogenes in the
CSF must be negative. The recruitment and procedure are
shown in Figure 1.
ADA levels were estimated in all samples of CSF using the
GALANTI and GIUSTI methods.
2.1. Statistical Analysis. ADA levels between patients with
tuberculous meningitis and nontuberculous meningitis were
compared using the Kruskal-Wallis test. ROC curve analysis
was performed to determine the cut-off value for ADA in
0.0 1.00.80.60.40.2
0.2
0.4
0.6
0.8
1.0
Negative (−)
Positive (+)
Figure 2: Posttest probability graph for the ADA cut-off value of
6 IU/L in CSF.
order to differentiate TBM from non-TBM groups. Statistical
analysis was performed using SPSS version 16. A 𝑃 value <
0.05 was considered significant.
3. Results
We included 40 HIV positive patients with meningitis in
our study; of these, 16 were diagnosed as having tubercu-
lous meningitis (TBM) and 24 patients had nontuberculous
meningitis (non-TBM). The mean ± SD age of the patients
was 35 ± 10 years with the youngest patient being 16 years old
and the oldest 65 years old. There were 32 men and 8 women.
Mean ± SD ADA levels in patients with TBM were
18.1 IU/L ± 19.176 IU/L and mean ADA levels in non-TBM
patients were 2.2 IU/L ± 1.8 IU/L (𝑃 < 0.001). Posttest
probability was high at ADA value of 6 IU/L and receiver-
operating characteristic (ROC) curves analysis of ADA levels
in TBM and non-TBM groups revealed area under curve
(AUC) of .958 (Figures 2 and 3). A cut-off value of 6 IU/L for
CSF ADA activity had sensitivity of 75%, specificity of 95.8%,
a positive predictive value of 92.3%, and a negative predictive
value of 85.2% for the diagnosis of TBM.
4. Discussion and Conclusion
Determination of ADA levels in CSF is a rapid test to distin-
guish TBM from non-TB meningitis especially in immuno-
competent hosts. Its sensitivity ranges from 75% to 94% and
specificity from 86% to 97% [23–27]. But the role of CSF
ADA level determination is still controversial in meningitis
patients with HIV as very few studies are available in the
literature. A study by Corral et al. [28] found that CSF ADA
level cut-off point of 8.5 IU/L for the diagnosis of tuberculous
3. Scientifica 3
0.0 1.00.80.60.40.2
1.0
0.8
0.6
0.4
0.2
Sensitivity
1 − specificity
Figure 3: The receiver-operating characteristic (ROC) analysis
curve for ADA in tuberculous meningitis and nontuberculous
meningitis. Area under curve (AUC) = .958.
meningitis had 57% sensitivity and 87% specificity; however,
another study by Machado et al. [29] found that elevated
CSF ADA levels are nonspecific for diagnosis of TBM in HIV
positive patients.
We found that a CSF ADA cut-off value of 5 IU/L has
sensitivity of 87.5% and specificity of 87.5%. On the other
hand, a cut-off value of 6 IU/L has sensitivity of 75% and
specificity of 96.8% for the diagnosis of TBM in HIV positive
patients. High specificity makes this a useful investigation for
confirming a diagnosis of TBM in HIV positive patients.
A study by Corral et al. [28] revealed that false-positive
results were found in patients with neurological CMV disease
and cryptococcal, lymphomatous, and probable candidal
meningitis. Patients with HIV associated neurological dis-
orders showed higher ADA levels than patients without
neurological disease, but the values were usually within
normal ranges. Thus, neither HIV infection per se nor HIV
infection of central nervous system causes elevation of ADA
levels in cerebrospinal fluid.
In our study a cut-off value of 5 has sensitivity of 87.5%
for diagnosis of tuberculous meningitis but if the cut-off
increases to 6 it further increases the specificity to 96.8%,
lowering the sensitivity to 75%. But if we consider the
cost-effectiveness of the test, disease burden in developing
countries, and need of a rapid accurate diagnostic test,
then cut-off value of 6 IU/L has very high specificity and
a fair percentage of sensitivity for diagnosis of tuberculous
meningitis in HIV positive patients.
Our study result is differing from the study done by
Machado et al. This can be because, unlike Machado et al.,
in our study, none of the patients had candidal meningitis,
CMV neurological disease, or neurobrucellosis. On the other
hand, our study showed that cryptococcal meningitis is the
commonest type of meningitis in HIV positive patients (19
patients). Though the number of cases in our study was small,
it demonstrated a statistically significant difference in cere-
brospinal fluid ADA levels between tuberculous meningitis
and cryptococcal meningitis cases. We need larger studies to
further substantiate the role of CSF ADA determination in
HIV associated TBM.
Abbreviations
WHO: World Health Organisation
NCCT: Noncontrast computed tomography scan
CSF: Cerebrospinal fluid
TBM: Tuberculous meningitis.
Ethical Approval
This study was approved by the institutional review board of
PGIMER and Dr. Ram Manohar Lohia Hospital, New Delhi.
Competing Interests
The authors declare that they have no competing interests.
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