Augmentation of the antibody response by lipoic acid in mice. I. Analysis of the mode of action in an in vitro culture system.
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概要
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Lipoic acid (Lip), a naturally occurring disulfide compound, was found to augment markedly in vitro antibody responses to sheep erythrocytes (SRBC), dinitrophenyl-Ficoll and trinitrophenyl-lipopolysaccharide (TNP-LPS) as effectively as 2-mercaptoethanol (2-ME) in murine lymphocytes. The mitogenic response to LPS or concanavalin A (Con A) was augmented by Lip only slightly. 2-ME has been reported to facilitate cystine utilization by the lymphocytes, but Lip did not, indicating that the mode of action of Lip is different from that of 2-ME. Lipaugmentation of anti-SRBC response was markedly abrogated when murine lymphocytes were depleted of T cells and cultured in the presence of Con A-conditioned medium containing T cell-replacing factor. The effect of Lip was also diminished in the response to TNP-LPS when the spleen cells were depleted of T cells. These observations suggest that Lip could augment the antibody response by stimulating a T cell subpopulation. This idea was confirmed by the experiment that Lip could enhance helper T cell activity which was induced by culturing murine lymphocytes with the antigen.
著者
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Ohmori Hitoshi
Department Of Bioscience And Biotechnology Graduate School Of Natural Science And Technology Okayama
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Yamamoto Itaru
Department Of Immunochemistry Faculty Of Pharmaceutical Science Okayama University
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Yamauchi Toshihiko
Department Of Electronics Nagoya University
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