Overview of Beta Thalassemia

These flashcards provide key vocabulary and concepts related to beta thalassemia, its classifications, symptoms, and implications in clinical practice.

Beta Thalassemia

A genetic disorder characterized by reduced or absent synthesis of beta globin chains.

Microcytic Anemia

A type of anemia where red blood cells are smaller than normal, commonly seen in beta thalassemia.

Autosomal Recessive

A pattern of inheritance in which a disorder is expressed when an individual inherits two copies of a defective gene, one from each parent.

Silent Beta Thalassemia

A form of beta thalassemia that does not show phenotypic expressions or significant symptoms.

Beta Thalassemia Minor

Heterozygous condition with one abnormal beta globin gene, typically presenting with mild symptoms.

Beta Thalassemia Major

Homozygous condition where both beta globin genes are affected, leading to severe symptoms and chronic hemolytic anemia.

Beta Thalassemia Intermedia

A broad category of beta thalassemias that do not fit into major or minor classifications, often associated with other disorders.

Hemoglobin F

Fetal hemoglobin that predominates in patients with beta thalassemia major, often constituting over 90% of the total hemoglobin.

Hemoglobin A2

A type of hemoglobin that may increase in patients with beta thalassemia minor as a compensatory mechanism.

Polycythemia

An increase in red blood cell concentration that can occur to compensate for the reduced hemoglobin levels due to beta thalassemia.

Hematopoiesis

The process of forming blood cellular components, which is disrupted in patients with beta thalassemia.

Splenomegaly

Enlargement of the spleen often seen in patients with chronic hemolytic anemia.

Basophilic Stippling

The presence of small, blue granules in red blood cells seen in certain types of anemia including beta thalassemia.

Hemoglobinopathy

A term that describes disorders resulting from abnormalities in the structure or production of hemoglobin.

Genetic Mutations

Changes in DNA that can lead to conditions like beta thalassemia.

Electrophoresis

A laboratory technique used to separate different types of hemoglobin in blood samples for diagnosis.

Iron Chelation Therapy

A treatment for managing iron overload, particularly relevant in transfusion-dependent patients with beta thalassemia.

Geographical Distribution

The presence of beta thalassemia in various geographic regions, with traditional prevalence in the Mediterranean, India, and Southeast Asia.

Point Mutation

A genetic alteration that affects a single nucleotide, often involved in the causation of beta thalassemia.

Frameshift Mutation

A genetic mutation caused by insertions or deletions of nucleotides that shifts the way the sequence is read, potentially leading to beta thalassemia.