Search results
Results From The WOW.Com Content Network
Sickle cell disease (SCD), also simply called sickle cell, is a group of hemoglobin-related blood disorders typically inherited. [2] The most common type is known as sickle cell anemia. [2] It results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells. [2] This leads to a rigid, sickle -like shape under ...
The erythrocytes' cell membranes may abnormally 'leak' sodium and/or potassium ions, causing abnormalities in cell volume. [1] Hereditary stomatocytosis should be distinguished from acquired causes of stomatocytosis, including dilantin toxicity and alcoholism, as well as artifact from the process of preparing peripheral blood smears. [2]: 237
The underlying causes of hemolytic jaundice, as its name suggests, are disorders associated with hemolysis. Such disorders are manifold and the common causes include: Blood smear of a patient with sickle cell disease. The characteristic sickle-shaped appearance of red blood cells can be observed.
Hemolytic anemia or haemolytic anaemia is a form of anemia due to hemolysis, the abnormal breakdown of red blood cells (RBCs), either in the blood vessels (intravascular hemolysis) or elsewhere in the human body (extravascular). [2] This most commonly occurs within the spleen, but also can occur in the reticuloendothelial system or mechanically ...
Jaundice, also known as icterus, is a yellowish or greenish pigmentation of the skin and sclera due to high bilirubin levels. [3][6] Jaundice in adults is typically a sign indicating the presence of underlying diseases involving abnormal heme metabolism, liver dysfunction, or biliary-tract obstruction. [7]
In persons with sickle cell disease, high levels of fetal hemoglobin as found in a newborn or as found abnormally in persons with hereditary persistence of fetal hemoglobin, the HbF causes the sickle cell disease to be less severe. In essence the HbF inhibits polymerization of HbS. A similar mechanism occurs with persons who have sickle cell trait.
Hemolytic transfusion reactions are a possible complication from red blood cell transfusions. Hemolysis refers to the lysis (rupture) of red blood cells, and the resulting leakage of their contents. Hemolytic reactions may be immune or non-immune mediated. Immune-mediated hemolytic reactions, such as DHTR, represent a type of alloimmunity.
G6PD deficient red cells in combination with high levels of oxidants causes a cross-linking of sulfhydryl groups on globin chains which causes a denaturing and formation of Heinz body precipitates. [8] Heinz bodies can also be found in chronic liver disease. [9] Alpha-thalassemia. Normal adult hemoglobin is composed of two alpha and two beta ...