Related Experiment Videos
Hydrocortisone modulates colony-stimulating activity produced by human bone marrow-derived adherent cells
J Hirata1, S Kaneko, J Nishimura
1Third Department of Internal Medicine, Kyushu University, Fukuoka, Japan.
European Journal of Haematology
|March 1, 1988
Summary
Hydrocortisone (HC) enhances colony-stimulating activity (CSA) production by human bone marrow cells, promoting granulopoiesis in vitro. However, HC also inhibits the differentiation of granulocyte-macrophage precursor cells (CFU-GM).
Area of Science:
- Hematology
- Endocrinology
Background:
- Hydrocortisone (HC) is crucial in regulating bone marrow functions.
- Understanding HC's role in human long-term bone marrow cultures is essential for hematopoiesis research.
Purpose of the Study:
- To investigate the significance of hydrocortisone (HC) in human long-term bone marrow cultures.
- To examine the production of colony-stimulating activity (CSA) and colony-enhancing activity (CEA) by human bone marrow-derived adherent cells (MDAC) and their modulation by HC.
Main Methods:
- Utilized bilayer agar cultures to assess CSA production by MDAC.
- Treated MDAC and macrophages with 10(-6) mol/l HC.
- Assessed HC's effect on colony formation in granulocyte-macrophage precursor cells (CFU-GM) assays.
Main Results:
- HC treatment markedly enhanced CSA production by MDAC.
- HC treatment inhibited CSA production by macrophages.
- HC inhibited colony formation in CFU-GM assays, suggesting direct stimulation of CSA by non-macrophage MDAC cells.
- CEA production by MDAC was not influenced by HC treatment.
Conclusions:
- Hydrocortisone (HC) plays a vital role in in vitro granulopoiesis.
- HC enhances CSA production by MDAC, thereby promoting granulopoiesis.
- HC inhibits the differentiation of CFU-GM, indicating a complex regulatory role in hematopoiesis.