title: Effects of immunosuppressive drugs and antibiotics on GM-CSF and G-CSF secretion in vitro by monocytes, T lymphocytes and endothelial cells.
abstract: We studied the effects of eight antibiotics, cyclosporin and corticosteroids on the in vitro secretion of GM-CSF and G-CSF by monocytes. T lymphocytes and endothelial cells. The aim was to evaluate a possible mechanism for these drugs in the delay of haemopoietic recovery after high-dose chemotherapy or bone marrow transplantation. Corticosteroids were prominent inhibitors of GM-CSF secretion by monocytes and T lymphocytes, but not by endothelial cells. In contrast, G-CSF secretion by monocytes was unchanged whereas that of endothelial cells was enhanced in the presence of corticosteroids. Cyclosporin efficiently down-regulated GM-CSF secretion by T lymphocytes and had also a minor effect on CSF secretion by endothelial cells, whereas monocyte secretion was unaffected. Stimulated T lymphocytes derived from patients under treatment with cyclosporin had impaired capacity to secrete GM-CSF compared to controls. Among the antibiotics, cephalosporins inhibited GM-CSF secretion by T lymphocytes, and GM- and G-CSF secretion by endothelial cells. Ciprofloxacin and sulphmethoxazole had minor effects on GM-CSF secretion by T lymphocytes and endothelial cells. No antibiotic significantly influenced GM-CSF secretion by monocytes.
authors.affiliation: Department of Medicine, University Hospital, Lund, Sweden.
authors.forename: S
authors.initials: S
authors.lastname: Lenhoff
authors.forename: T
authors.initials: T
authors.lastname: Olofsson
mesh_terms: D000305:Adrenal Cortex Hormones / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D016572:Cyclosporine / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004730:Endothelium, Vascular / Q000378:metabolism; D016179:Granulocyte Colony-Stimulating Factor / Q000378:metabolism*; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000378:metabolism*; D006801:Humans; D007166:Immunosuppressive Agents / Q000494:pharmacology*; D009000:Monocytes / Q000378:metabolism*; D013601:T-Lymphocytes / Q000378:metabolism*; D014471:Umbilical Veins / Q000166:cytology* / Q000378:metabolism
chemical_list: D000305:Adrenal Cortex Hormones; D000900:Anti-Bacterial Agents; D007166:Immunosuppressive Agents; D016179:Granulocyte Colony-Stimulating Factor; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D016572:Cyclosporine