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Megaloblastic anemia is a type of macrocytic anemia. An anemia is a red blood cell defect that can lead to an undersupply of oxygen. [1] Megaloblastic anemia results from inhibition of DNA synthesis during red blood cell production. [2] When DNA synthesis is impaired, the cell cycle cannot progress from the G2 growth stage to the mitosis (M ...
Macrocytic anemias have several causes but with the implementation of folic acid fortification in North America, folate deficiency has become a rare cause of megaloblastic macrocytic anemia in that part of the world. [1] In this region, Vitamin B 12 deficiency is a far more common cause of megaloblastic macrocytic anemia. [1]
Defined as those seen in any macrocytic, megaloblastic anemia: [1] Anemia: causing fatigue, conjuctival pallor, pale complexion, and in some cases, a mild icterus (yellowing of the eye). Glossitis ("shiny tongue"): shiny, glossy tongue. Cheilosis (stomatitis): Inflammation of the edges of the lips and the oral mucosa.
Thiamine responsive megaloblastic anemia syndrome (also known as Rogers syndrome) is a very rare autosomal recessive genetic disorder affecting a thiamine transporter, which is characterized by megaloblastic anemia, diabetes mellitus, and hearing loss. The condition is treated with high doses of thiamine (vitamin B1).
[1] [6] Temporary infertility, reversible with treatment, may occur. [1] [7] A late finding type of anemia known as megaloblastic anemia is often but not always present. [2] In exclusively breastfed infants of vegan mothers, undetected and untreated deficiency can lead to poor growth, poor development, and difficulties with movement. [2]
Neutrophil hypersegmentation is one of the earliest, most sensitive and specific signs of megaloblastic anemia (mainly caused by hypovitaminosis of vitamin B12 & folic acid). Nuclear hypersegmentation of DNA in neutrophils strongly suggests megaloblastosis when associated with macro-ovalocytosis.
Victor Herbert (February 22, 1927 – November 19, 2002) [1] was an American hematologist who did ground-breaking work on folate and how its deficiency led to megaloblastic anemia and was a proponent of accurate and responsible nutrition information.
Severe megaloblastic anemia; Hemolytic anemia; Sickle-cell anemia; Pyrimidine 5' nucleotidase deficiency [4] Alcoholism [5] Myelodysplastic syndromes; Sideroblastic anemia [6] Congenital dyserythropoietic anemia [7] Primary myelofibrosis; Leukemia [8] Erythroleukemia [9] Hemorrhage, e.g. from gastrointestinal tract; CPD-choline ...
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