The production of granulocyte colony-stimulating factor and interleukin 6 by human bone marrow stromal cells in aplastic anemia.
TOHOKU JOURNAL OF EXPERIMENTAL MEDICINE(1993)
Abstract
Stromal cells are known to produce granulocyte colony-stimulating factor (G-CSF) and interleukin 6 (IL-6). To assess the function of bone marrow stromal cells in the pathological state, we studied their in vitro ability to produce G-CSF and IL-6 in 9 patients with aplastic anemia and 5 normal volunteers, using an enzyme immunoassay method. Constitutive production of IL-6, but not G-CSF, was detected in almost all cases. Interestingly, the inducible production of G-CSF and IL-6 by stromal cells after stimulation with interleukin-1 and/or lipopolysaccharides was severely depressed in 3 patients with aplastic anemia. Our results may reflect poor hematopoietic activity in the bone marrow in some cases of aplastic anemia.
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Key words
BONE MARROW STROMAL CELLS,GRANULOCYTE COLONY-STIMULATING FACTOR,INTERLEUKIN-6,APLASTIC ANEMIA
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