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Hereditary xerocytosis occurs more commonly in African populations, [2] [4] and it exhibits complex interactions with other hereditary alterations of red blood cells, including sickle cell disease [4] [5] and malaria resistance. [4] [6] Osmosis leads to the red blood cell having a constant tendency to swell and burst.
Microcytic anaemia; Microcytosis is the presence of red cells that are smaller than normal. Normal adult red cell has a diameter of 7.2 µm. Microcytes are common seen in with hypochromia in iron-deficiency anaemia, thalassaemia trait, congenital sideroblastic anaemia and sometimes in anaemia of chronic diseases.
a decreased production of normal-sized red blood cells (e.g., anemia of chronic disease, aplastic anemia); an increased production of HbS as seen in sickle cell disease (not sickle cell trait); an increased destruction or loss of red blood cells (e.g., hemolysis, posthemorrhagic anemia, hypersplenism);
After splenectomy with the goal of arresting the progression of cancers (Chronic lymphocytic leukemia, [3] Hodgkin's disease (starting in the 1970s [4]), non-Hodgkin lymphoma [5]) Due to underlying diseases that destroy the spleen (autosplenectomy), e.g. sickle-cell disease. Celiac disease: unknown physiopathology. [6]
Hereditary elliptocytosis, also known as ovalocytosis, is an inherited blood disorder in which an abnormally large number of the person's red blood cells are elliptical rather than the typical biconcave disc shape.
Hypochromic anemia may be caused by vitamin B6 deficiency from a low iron intake, diminished iron absorption, or excessive iron loss. It can also be caused by infections (e.g. hookworms) or other diseases (i.e. anemia of chronic disease), therapeutic drugs, copper toxicity, and lead poisoning.
Hemoglobinopathy is the medical term for a group of inherited blood disorders involving the hemoglobin, the protein of red blood cells. [1] They are single-gene disorders and, in most cases, they are inherited as autosomal co-dominant traits.
This would be similar to the hemoglobin allele which is responsible for sickle-cell disease, but solely in people with two copies; those with just one copy of the allele have a sickle cell trait and gain partial immunity to malaria as a result. This effect is called heterozygote advantage. [27]