Genetic heterogeneity in severe congenital neutropenia: how many aberrant pathways can kill a neutrophil?
نویسندگان
چکیده
منابع مشابه
Neutrophil elastase in cyclic and severe congenital neutropenia.
Mutations in ELA2 encoding the neutrophil granule protease, neutrophil elastase (NE), are the major cause of the 2 main forms of hereditary neutropenia, cyclic neutropenia and severe congenital neutropenia (SCN). Genetic evaluation of other forms of neutropenia in humans and model organisms has helped to illuminate the role of NE. A canine form of cyclic neutropenia corresponds to human Hermans...
متن کاملGranulopoiesis in severe congenital neutropenia.
The pathogenesis of the granulopoietic failure in three children with severe congenital neutropenia was studied. Mature neutrophils were absent from both peripheral blood and bone marrow. Assay of bone marrow granulocyte colony-forming cells (CFU-C) in a methylcellulose tissue culture system using colony-stimulating activity (CSA) from peripheral blood leukocytes demonstrated normal or increase...
متن کاملAberrant subcellular targeting of the G185R neutrophil elastase mutant associated with severe congenital neutropenia induces premature apoptosis of differentiating promyelocytes.
Mutations in the ELA2 gene encoding neutrophil elastase (NE) are present in most patients with severe congenital neutropenia (SCN). However, the mechanisms by which these mutations cause neutropenia remain unknown. To investigate the effects of mutant NE expression on granulopoiesis, we used the HL-60 promyelocytic cell line retrovirally transduced with the G185R NE mutant that is associated wi...
متن کاملSevere congenital neutropenia: case report
Introduction Neutropenia is defined in the literature as absolute neutrophil counts in peripheral blood of less than 1500 cells/mm3 in more than one year old and less than 2000cells/mm3 in children in the first year old of life. Neutropenia is classified as mild, moderate or severe, and may be congenital or acquired, persistent or not. Kostmann syndrome is a severe neutropenia, the incidence va...
متن کاملCongenital neutropenia: neutrophil proliferation with abnormal maturation.
A child with congenital neutropenia was studied using bone marrow culture and ultrastructural and cytochemical techniques. The patient's marrow cells formed a large number of granulocytic colonies of normal size in culture, and her peripheral blood leukocytes produced adequate colony-stimulating factor. No serum inhibitors were identified. The patient's promyelocytes from direct marrow and cult...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Current Opinion in Allergy and Clinical Immunology
سال: 2007
ISSN: 1528-4050
DOI: 10.1097/aci.0b013e3282f1d690