title: Tumour-derived, endocrine, exogenous and therapeutic factors differentially modulate cytokine secretion in whole blood cell culture.
abstract: Following our previous results which showed that TGF-beta 1 suppressed the secretion of certain cytokines, we investigated the effects of different endogenous and exogenous factors on cytokine secretion in whole blood cell culture by using an enzyme-linked immunosorbent assay (ELISA) for measurement of cytokine concentrations. Several molecules including dexamethasone, noradrenaline (NA) and ethanol differentially inhibited mitogen-induced cytokine secretion. Dexamethasone and noradrenaline suppressed secretion of IL-2, IFN alpha, IFN gamma, TNF alpha, IL-1 alpha and IL-1 beta. beta-Endorphin and Leu-Enkephalin had no significant influence on cytokine secretion. Suppression of cytokine secretion by TGF-beta 1 was further intensified significantly and dose dependently by addition of noradrenaline. GM-CSF stimulated the secretion of IL-1 alpha, IL-1 beta and TNF gamma, but had no influence on the secretion of IL-2, IFN alpha and IFN gamma. G-CSF, IL-3 and SCF did not significantly influence secretion of all cytokines tested. Thus, endogenous and exogenous factors differentially influence cytokine secretion by immunocompetent cells.
authors.affiliation: Thorax-Klinik der LVA Baden, Department of Medical Oncology, Heidelberg-Rohrbach, Germany.
authors.forename: J R
authors.initials: JR
authors.lastname: Fischer
authors.forename: M
authors.initials: M
authors.lastname: Schindel
authors.forename: H
authors.initials: H
authors.lastname: Lahm
authors.forename: P
authors.initials: P
authors.lastname: Drings
mesh_terms: D000328:Adult; D018929:Cell Culture Techniques; D003115:Colony-Stimulating Factors / Q000494:pharmacology; D016207:Cytokines / Q000097:blood*; D003907:Dexamethasone / Q000494:pharmacology; D000431:Ethanol / Q000494:pharmacology; D006801:Humans; D007108:Immune Tolerance / Q000187:drug effects* / Q000276:immunology; D007166:Immunosuppressive Agents / Q000494:pharmacology*; D009369:Neoplasms / Q000276:immunology*; D009638:Norepinephrine / Q000494:pharmacology; D016212:Transforming Growth Factor beta / Q000494:pharmacology
chemical_list: D003115:Colony-Stimulating Factors; D016207:Cytokines; D007166:Immunosuppressive Agents; D016212:Transforming Growth Factor beta; D000431:Ethanol; D003907:Dexamethasone; D009638:Norepinephrine