PMID- 8865966 OWN - NLM STAT- MEDLINE DCOM- 19970206 LR - 20190826 IS - 0145-6008 (Print) IS - 0145-6008 (Linking) VI - 20 IP - 5 DP - 1996 Aug TI - Regulation of human monocyte functions by acute ethanol treatment: decreased tumor necrosis factor-alpha, interleukin-1 beta and elevated interleukin-10, and transforming growth factor-beta production. PG - 900-7 AB - We and others have previously shown that even acute ethanol exposure has the capacity to modulate immune functions, particularly monocyte functions. Herein, we tested the hypothesis that acute ethanol treatment inhibits inflammatory, while increasing inhibitory cytokine production in human blood monocytes that, in turn, could contribute to the overall immune abnormalities seen after alcohol use. Our data show that in vitro treatment of blood monocytes with a physiologically relevant dose of alcohol (25 mM) results in significantly decreased induction of tumor necrosis factor-alpha (TNF alpha) and interleukin (IL)-1 beta by bacterial stimulation of either Gram-positive [staphylococcal enterotoxin B (SEB), 1 microgram/ml of SEB] or Gram-negative [lipopolysaccharide (LPS), 1 microgram/ml of LPS] origin both at the protein and mRNA levels. In contrast, acute ethanol treatment induces monocyte production of mediators with immunoinhibitory potential, including transforming growth factor-beta and IL-10. We further show that ethanol not only induces monocyte/macrophage (Mo) IL-10 and transforming growth factor-beta, but even augments bacterial (both LPS and SEB) stimulation-induced production of both of these cytokines. IL-10 is a potent inhibitor of Mo TNF alpha production. We found that ethanol-induced elevation in Mo IL-10 levels contributes to the decreased Mo TNF alpha production to bacterial challenge in ethanol-exposed Mo. However, mRNA levels for TNF alpha are downregulated as early as 1.5 hr after ethanol treatment, suggesting that ethanol likely has an IL-10 independent, direct effect on early signaling events of TNF alpha induction. FAU - Szabo, G AU - Szabo G AD - Department of Medicine, University of Massachusetts Medical Center, Worcester 01655, USA. FAU - Mandrekar, P AU - Mandrekar P FAU - Girouard, L AU - Girouard L FAU - Catalano, D AU - Catalano D LA - eng GR - AA08577/AA/NIAAA NIH HHS/United States GR - AA09076/AA/NIAAA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Alcohol Clin Exp Res JT - Alcoholism, clinical and experimental research JID - 7707242 RN - 0 (Interleukin-1) RN - 0 (Lipopolysaccharides) RN - 0 (Transforming Growth Factor beta) RN - 0 (Tumor Necrosis Factor-alpha) RN - 130068-27-8 (Interleukin-10) RN - 3K9958V90M (Ethanol) SB - IM MH - Adult MH - Alcoholic Intoxication/*immunology MH - Dose-Response Relationship, Drug MH - Escherichia coli/immunology MH - Ethanol/pharmacokinetics/*toxicity MH - Female MH - Humans MH - In Vitro Techniques MH - Interleukin-1/*blood MH - Interleukin-10/*blood MH - Lipopolysaccharides/immunology MH - Macrophages/drug effects/immunology MH - Male MH - Middle Aged MH - Monocytes/*drug effects/immunology MH - Transforming Growth Factor beta/*blood MH - Tumor Necrosis Factor-alpha/*metabolism EDAT- 1996/08/01 00:00 MHDA- 1996/08/01 00:01 CRDT- 1996/08/01 00:00 PHST- 1996/08/01 00:00 [pubmed] PHST- 1996/08/01 00:01 [medline] PHST- 1996/08/01 00:00 [entrez] AID - 10.1111/j.1530-0277.1996.tb05269.x [doi] PST - ppublish SO - Alcohol Clin Exp Res. 1996 Aug;20(5):900-7. doi: 10.1111/j.1530-0277.1996.tb05269.x.