title: Splenic monocyte-macrophage dependent suppression of autologous granulocyte-progenitors growth in Hodgkin's disease.
abstract: The studies described compare the effect of spleen cell suspensions from 11 patients with Hodgkin's disease (HD) and 5 healthy subjects on the clonal growth of autologous marrow granulopoietic progenitors in diffusion chamber culture (CFU-G/D). Adherent monocyte/macrophage fraction of splenocytes from HD suppresses the proliferation of autologous CFU-G/D. This inhibition was mediated by an indomethacin-sensitive humoral factor(s). Non-adherent lymphoid cells stimulated myeloid colony formation. Dose response curves demonstrated a markedly increased inhibitory-activity production already by low numbers of splenic monocytes/macrophages from HD whereas a comparable counts of monocytes/macrophages from the spleens of healthy subjects stimulated the CFU-G/D growth. These results may suggest a possible activation of splenic monocytes/macrophages with an enhanced prostaglandin-mediated suppressor activity release for local granulocytopoiesis in the spleens of patients with HD.
mesh_terms: D000328:Adult; D001853:Bone Marrow / Q000473:pathology; D003114:Colony-Forming Units Assay; D005260:Female; D006098:Granulocytes / Q000473:pathology*; D006131:Growth Inhibitors / Q000378:metabolism*; D006412:Hematopoietic Stem Cells / Q000473:pathology*; D006689:Hodgkin Disease / Q000473:pathology*; D006801:Humans; D007213:Indomethacin / Q000494:pharmacology; D008264:Macrophages / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000502:physiology*; D013154:Spleen / Q000473:pathology*
chemical_list: D006131:Growth Inhibitors; D007213:Indomethacin