This document discusses sickle cell anemia, including its causes, inheritance pattern, symptoms, diagnosis, and treatment options. Specifically, it is an inherited blood disorder caused by a mutation in the hemoglobin gene that results in abnormal hemoglobin called hemoglobin S. The condition is inherited in an autosomal recessive pattern. Symptoms can include anemia, painful episodes, swelling of hands and feet, infections, and organ damage. Diagnosis involves blood tests. Treatments may include medications, transfusions, hydroxyurea therapy, bone marrow transplantation, and gene therapy.
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1. WHAT IS THALASSEMIA?
2. Molecular Basis of Thalassemia.
3. Types of Thalassemia.
4. - Thalassemia.
5.Types of - Thalassemia.
6. 휷- Thalassemia.
7. Types of 휷- Thalassemia.
8. Thalassemia Syndrome.
9.Treatment
Iron Chelation Therapy
Ashutosh Lal, MD.
January 18, 2014
Thalassemia Patient and Family Conference
Northern California Comprehensive Thalassemia Center
Children's Hospital Oakland
Get here,
1. WHAT IS THALASSEMIA?
2. Molecular Basis of Thalassemia.
3. Types of Thalassemia.
4. - Thalassemia.
5.Types of - Thalassemia.
6. 휷- Thalassemia.
7. Types of 휷- Thalassemia.
8. Thalassemia Syndrome.
9.Treatment
Iron Chelation Therapy
Ashutosh Lal, MD.
January 18, 2014
Thalassemia Patient and Family Conference
Northern California Comprehensive Thalassemia Center
Children's Hospital Oakland
A presentation made about Sickle cell disease by Yara Mostafa, Yasser Osama, Yaser Mostafa ,Ain shams university, Medicine faculty, first year students.
A presentation made about Sickle cell disease by Yara Mostafa, Yasser Osama, Yaser Mostafa ,Ain shams university, Medicine faculty, first year students.
The connection between genetics and kidney disease lies in the role of inherited genetic factors that can increase the risk of developing various kidney diseases.
Certain kidney diseases, such as Polycystic Kidney Disease (PKD) and Alport Syndrome, have a clear genetic component where mutations in specific genes contribute to the development of these conditions.
Understanding these genetic basis is vital for assessing the risk of kidney disease in individuals with family history and for advancing personalized medicine approaches in prevention, diagnosis and treatment.
Genetic testing plays a significant role in identifying these predispositions and guiding healthcare strategies.
SICKELE CELL DISEASE MODULE 3 SEJOJO.pptx TO BE PRESENTED. IN TRAININGS.pptxSEJOJO PHAAROE
Sickle cell anemia is a genetic disorder whereby red blood cells are abnormally shaped, causing problems with the flow of blood through the body as well as transport of oxygen throughout the body
inheritance is Autosomal because its a blood disorder and systemic disorder
its caused by mutation on B-chain of the globulin chain , where red blood cells (RBCs) become sickle/crescent shaped
Cells get destroyed in narrowed thin blood capillaries , RE system and cause anaemia Blockage in thin layers body
For medical students, especially for early clinical exposure , it will help preclinical medical students. It gives details of about seven case reports in carbohydrate metabolism. MBBS students can use the information for theory exam also.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
The increased availability of biomedical data, particularly in the public domain, offers the opportunity to better understand human health and to develop effective therapeutics for a wide range of unmet medical needs. However, data scientists remain stymied by the fact that data remain hard to find and to productively reuse because data and their metadata i) are wholly inaccessible, ii) are in non-standard or incompatible representations, iii) do not conform to community standards, and iv) have unclear or highly restricted terms and conditions that preclude legitimate reuse. These limitations require a rethink on data can be made machine and AI-ready - the key motivation behind the FAIR Guiding Principles. Concurrently, while recent efforts have explored the use of deep learning to fuse disparate data into predictive models for a wide range of biomedical applications, these models often fail even when the correct answer is already known, and fail to explain individual predictions in terms that data scientists can appreciate. These limitations suggest that new methods to produce practical artificial intelligence are still needed.
In this talk, I will discuss our work in (1) building an integrative knowledge infrastructure to prepare FAIR and "AI-ready" data and services along with (2) neurosymbolic AI methods to improve the quality of predictions and to generate plausible explanations. Attention is given to standards, platforms, and methods to wrangle knowledge into simple, but effective semantic and latent representations, and to make these available into standards-compliant and discoverable interfaces that can be used in model building, validation, and explanation. Our work, and those of others in the field, creates a baseline for building trustworthy and easy to deploy AI models in biomedicine.
Bio
Dr. Michel Dumontier is the Distinguished Professor of Data Science at Maastricht University, founder and executive director of the Institute of Data Science, and co-founder of the FAIR (Findable, Accessible, Interoperable and Reusable) data principles. His research explores socio-technological approaches for responsible discovery science, which includes collaborative multi-modal knowledge graphs, privacy-preserving distributed data mining, and AI methods for drug discovery and personalized medicine. His work is supported through the Dutch National Research Agenda, the Netherlands Organisation for Scientific Research, Horizon Europe, the European Open Science Cloud, the US National Institutes of Health, and a Marie-Curie Innovative Training Network. He is the editor-in-chief for the journal Data Science and is internationally recognized for his contributions in bioinformatics, biomedical informatics, and semantic technologies including ontologies and linked data.
2. SICKLE CELL ANAEMIA
INHERITED blood disorder – abnormal haemoglobin, haemoglobin S ,
sickle haemoglobin S
Hemoglobin is a protein in red blood cells that carries oxygen throughout
the body
When a person has two hemoglobin S genes, Hemoglobin SS, the disease
is called sickle cell anemia
Hb S: Linus Pauling et.al., 1949
Prdn of Abnormal Protein is because of Genetic disorder
6Glu→Val - Vernon Ingram (1956)
1960s, 1970s : first coherent pathophysiological scheme - abnormal
polymerization of deoxy-HbS elaborated
3.
4.
5. This condition is inherited in an autosomal recessive pattern, which means both
copies of the gene in each cell have mutations. The parents of an individual with an
autosomal recessive condition each carry one copy of the mutated gene, but they
typically do not show signs and symptoms of the condition.
6.
7. Symptoms
• Signs and symptoms vary from people to people
• Anemia - Normal RBC - 120 days, sickle RBC - 10 to 20 days, no energy and thus
fatigue
• Epidoses of pain - Pain develops when sickle-shaped red blood cells block blood flow
through tiny blood vessels to your chest, abdomen and joints. Pain can also occur in
bones. (Vaso-occlusive painful crisis (VOC)
• Painful swelling of hands and feet - The swelling is caused by sickle-shaped red blood
cells blocking blood flow to the hands and feet
• Frequent infections - Sickle cells can damage an organ that fights infection (spleen)
• Delayed growth - Red blood cells provide your body with the oxygen and nutrients
you need for growth. A shortage of healthy red blood cells can slow growth in infants
and children and delay puberty in teenagers.
8. • Vision problems. Tiny blood vessels that supply your eyes may become
plugged with sickle cells. This can damage the retina — the portion of
the eye that processes visual images, leading to vision problems
• Severe Anaemia
• Fatigue, paleness, rapid heart rate, shortness of breath (sickle cells
block lungs)
• Jaundice – Pale skin or nail beds
• Yellow tint to the skin and whites of the eyes
• Problems with thinking or confusion caused by small strokes
• Ulcers on the lower legs (in adolescents and adults)
Bone infection (osteomyelitis), Gallbladder infection (cholecystitis),
pneumonia, UTI
9.
10. LABORATORY DIAGNOSIS
1. HiCN Method – Drabkin’s solution
Exception - Pregnant women, haemodilution > 10.5g/dl
2. Haematorit or Packed cell volume - it is the amount of packed red
blood cell, following centrifugation, expressed as a t otal
Normal Value - male: 42-52%
Female:: 36-49%
3.Peripheral blood film examination- Normal RBC – biconcave, 7.2µm,
thickness 2.4µm and 1 µm in the centre. Biconcave shape render the
cell flexible to pass through capillaries which are about 3.5µm
11.
12.
13. TREATMENT
• NIH – National Institute of health advices optimal care of patients
• Self treatment – bed rest, oral analgesia and hydration
• Long term transfusion therapy to prevent stroke
• Initiation of opoids for vaso-occlusive crisis
• FDA has approved ingestion of L- glutamine oral powder. This reduced pain crisis
that resulted in treatment
• Hydroxyurea therapy
FDA has approved this therapy for long term treatment. This increases total and
fetal hemoglobin.
• Transfusion
• Urgent replacement of blood is often required for sudden, severe anemia due to
acute splenic sequestration, parvovirus B19 infection, or hyperhemolytic crisis.
Transfusion is helpful in acute chest syndrome, perioperatively, and during
pregnancy.
14. Bone Marrow Transplantation: The Only Cure:
• Currently the cure for sickle cell disease is bone marrow
transplantation. In this procedure a sick patient is transplanted with
bone marrow from healthy, genetically compatible sibling donors.
However only about 18 percent of children with sickle cell disease
have a healthy, matched sibling donor. Bone marrow transplantation
is a risky procedure with many complications.
15. GENE THERAPY for sickle cell anaemia
Researchers at UCLA’s Eli & Edythe Broad Center of Regenerative Medicine &
Stem Cell Research have successfully established the foundation for using
hematopoietic (blood-producing) stem cells (HSC) from the bone marrow of
patients with sickle cell disease (SCD) to treat the disease. The study was led
by Dr. Donald Kohn, professor of pediatrics and microbiology, immunology and
molecular genetics in the life sciences.
Patient treated with lentiviral vector–mediated addition of an antisickling β-
globin gene into autologous hematopoietic stem cells. Fifteen months after
treatment, the level of therapeutic antisickling β-globin remained high
(approximately 50% of β-like–globin chains) without recurrence of sickle crises
and with correction of the biologic hallmarks of the disease
16. • HSC
• insert gene with ant sickling property
• Transduce into the patients bone marrow using lentiviral vector
• Now a team in France seems to have developed a treatment
• bone marrow stem cells were taken
• gave extra, mutated versions of the gene that codes for beta-globin.
These were designed to make beta-globin that would interfere with the
faulty proteins, stopping them from clumping together.
• The researchers then put these stem cells back into the body. After
around three months, he began producing large quantities of
haemoglobin that behaves normally (New England Journal of
Medicine, DOI: 10.1056/NEJMoa1609677). “The patient is now 15 years
old and free of all previous medication
17. Von GIERKE disease
• Also known as GSDI – glycogen storage disease type
•
• An inherited disorder that builds up glycogen in body cells
• Organs and tissues - liver, kidneys and small intestines and thus
impairs their function
• Seen at 3-4 months of baby when they don’t take feed normally at
nights
• Frequency - 1 in 1,00,000 where GSDIa is dominant as compared to
GSDIb
18.
19. Etiology
• Mutation s in gene G6PC (GSDIa) and SLC37A4 (GSDIb)
• G6PC gene codes for Glucose - 6 – phophatase (enzyme present on
membrane of ER) together with
• SLC37A4 codes for - solute carrier family 37 member 4, which function
as glucose 6-phosphate translocase protein
• This two work together to break glucose -6-phosphate
• If glucose -6-phosphate is not broken down they convert to glycogen
an fat, this becomes toxic and damages organs and tissues (liver and
kidney)
• Atleast 85 mutations are reported in G6PC gene
20.
21. SLC37A4 gene - solute carrier family 37 member 4
The SLC37A4 gene provides instructions for making a protein called
glucose 6-phosphate translocase
This protein transports the sugar molecule glucose 6-phosphate from the
fluid inside the cell to the endoplasmic reticulum, which is a structure
inside cells that is involved in protein processing and transport
At the membrane of the endoplasmic reticulum, glucose 6-phosphate
translocase works together with the glucose 6-phosphatase protein
(produced from the G6PC gene) to break down glucose 6-phosphate
If glucose 6-phosphate cannot get to the endoplasmic reticulum, it
cannot get broken down and glucose is not produced
More than 80 mutations
22.
23.
24.
25. INHERITANCE PATTERN
• This condition is inherited in an autosomal recessive pattern, which
means both copies of the gene in each cell have mutations.
• The parents of an individual with an autosomal recessive condition
each carry one copy of the mutated gene, but they typically do not
show signs and symptoms of the condition.
• That is parents should be carriers
26. Symptoms
• Seen at 3-4 months of baby when they don’t take feed normally at nights
• Affected infants have low blood sugar that leads to seizures
• More of lactic acid, uric acid and excess amount to fats
• As they get older, children with GSDI have thin arms and legs and short
stature
• An enlarged liver may give the appearance of a protruding abdomen
• The kidneys may also be enlarged
• Delayed puberty because of abnormal development of the ovaries –
polycystic ovaries
• Adenomas (tumor) form in the liver, may be noncancerous (benign) or
cancerous (malignant)
27. Symptoms
• Researchers have described two types of GSDI, which differ in their signs
and symptoms and genetic cause
• These types are known as glycogen storage disease type Ia (GSDIa) and
glycogen storage disease type Ib (GSDIb)
• People with GSDIb have neutropenia (less WBC), so more infections,
inflammation of intestinal walls, inflammation of the gums (gingivitis),
chronic gum (periodontal) disease, abnormal tooth development, and
open sores (ulcers) in the mouth
• The neutropenia and oral problems are specific to people with GSDIb
and are typically not seen in people with GSDIa
31. Treatment - Gene therapy
Adenovirus- and adeno-associated virus (AAV)-mediated gene
therapies have been evaluated for GSD-Ia in these model systems.
adenoviral therapy produces only short term corrections and only
impacts liver expression of the gene
AAV-mediated therapy delivers the transgene to both the liver and
kidney, achieving longer term correction of the GSD-Ia disorder
Gene therapy for GSD-Ib in the animal model is still in its infancy,
although an adenoviral construct has improved the metabolic profile
and myeloid function.
Initial studies using Adeno associated virus (AAV) serotype 2–based
vectors expressing G6Pase-α to treat infant GSD-Ia in dogs or mice
showed suboptimal improvement
Adeno associated virus (AAV) serotype 8 vectors are also used
32. Treatment - Gene therapy
• Correct gene in vectors of feline immunodeficiency virus (FIV), a
nonprimate lentivirus and transduced in the liver of the murines
• these vectors are capable of integrating stably into hepatocyte cell
lines and adult murine livers and lead to long-term transgene
expression
• Single administration of FIV vectors containing the human G6Pase
gene to G6Pase-α−/− mice did not change the biochemical and
pathological phenotype
• However, a double neonatal administration protocol led to
normalized blood glucose levels, significantly extended survival,
improved body weight, and decreased accumulation of liver glycogen
associated with the disease