Mutations of PIG - A in Patients With PNH
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منابع مشابه
PIG-A mutations in normal hematopoiesis.
Paroxysmal nocturnal hemoglobinuria (PNH) is caused by phosphatidylinositol glycan-class A (PIG-A) mutations in hematopoietic stem cells (HSCs). PIG-A mutations have been found in granulocytes from most healthy individuals, suggesting that these spontaneous PIG-A mutations are important in the pathogenesis of PNH. It remains unclear if these PIG-A mutations have relevance to those found in PNH....
متن کاملThe spectrum of PIG-A gene mutations in aplastic anemia/paroxysmal nocturnal hemoglobinuria (AA/PNH): a high incidence of multiple mutations and evidence of a mutational hot spot.
Paroxysmal nocturnal hemoglobinuria (PNH) may arise during long-term follow- up of aplastic anemia (AA), and many AA patients have minor glycosylphosphatidylinositol (GPI) anchor-deficient clones, even at presentation. PIG-A gene mutations in AA/PNH and hemolytic PNH are thought to be similar, but studies on AA/PNH have been limited to individual cases and a few small series. We have studied a ...
متن کاملFrequent detection of T cells with mutations of the hypoxanthine-guanine phosphoribosyl transferase gene in patients with paroxysmal nocturnal hemoglobinuria.
Acquired mutations of the PIG-A gene result in the hemolysis characteristic of paroxysmal nocturnal hemoglobinuria (PNH). Although the etiology of the mutation(s) is unclear, mutable conditions have been suggested by the coexistence of multiple clones with different mutations of PIG-A and by the appearance of leukemic clones in patients with PNH. This study sought to test this hypothesis by exa...
متن کاملSomatic Mutations of PIG - A in Thai Patients With Paroxysmal Nocturnal
Paroxysmal nocturnal hemoglobinuria (PNH) is a hematopoietic stem cell disorder characterized by clonal blood cells that are deficient in the surface expression of glycosylphosphatidylinositol (GPI)-anchored proteins. In the affected cells, the X-chromosomal gene PIG-A, which participates in biosynthesis of the GP1 anchor, is somatically mutated. Analyses of Japanese, British, and American pa...
متن کاملThe mutation rate in PIG-A is normal in patients with paroxysmal nocturnal hemoglobinuria (PNH).
Paroxysmal nocturnal hemoglobinuria (PNH) is characterized by the presence in the patient's hematopoietic system of a large cell population with a mutation in the X-linked PIG-A gene. Although this abnormal cell population is often found to be monoclonal, it is not unusual that 2 or even several PIG-A mutant clones coexist in the same patient. Therefore, it has been suggested that the PIG-A gen...
متن کاملSomatic mutations of PIG-A in Thai patients with paroxysmal nocturnal hemoglobinuria.
Paroxysmal nocturnal hemoglobinuria (PNH) is a hematopoietic stem cell disorder characterized by clonal blood cells that are deficient in the surface expression of glycosylphosphatidylinositol (GPI)-anchored proteins. In the affected cells, the X-chromosomal gene PIG-A, which participates in biosynthesis of the GPI anchor, is somatically mutated. Analyses of Japanese, British, and American pati...
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تاریخ انتشار 2002