Journal
CLINICAL IMMUNOLOGY
Volume 102, Issue 2, Pages 179-184Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/clim.2001.5160
Keywords
taurine chloramine; cytokines; lymphocyte proliferation; human monocytes
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Funding
- NHLBI NIH HHS [HL-49942] Funding Source: Medline
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Previously, we described the inhibition of proinflammatory mediators such as nitric oxide, tumor necrosis factor-alpha (TNF-alpha), and prostaglandin E-2, by taurine chloramine (Tau-Cl) in activated rodent macrophages. We also demonstrated that Tau-Cl suppressed superoxide anion, IL-6, and IL-8 production in activated human polymorphonuclear leukocytes separated from peripheral blood. In these studies, we report the effect of Tau-Cl on lymphocyte proliferation and the production of cytokines by activated human peripheral blood mononuclear leukocytes. Adherent and nonadherent leukocytes were activated using lipopolysaccharide (LPS) and phytohemagglutinin (PIIA), respectively, in the presence or absence of Tau-Cl. Tau-Cl significantly suppressed lymphocyte proliferation as measured by tritiated CH) thymidine. Production of IL-6, IL-8, and IL-2 in PHA-activated nonadherent leukocytes was inhibited by Tau-Cl. The production of IL-1beta, IL-6, and IL-8 was also decreased in LPS-activated adherent monocytes by Tau-Cl. These data demonstrate that the ability of Tau-Cl to modulate the immune response is not species specific and extends to human leukocytes. (C) 2002 Elsevier Science (USA).
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