Literature DB >> 12238565

Endomorphin-2 modulates productions of TNF-alpha, IL-1beta, IL-10, and IL-12, and alters functions related to innate immune of macrophages.

Yasutaka Azuma1, Kiyoshi Ohura.   

Abstract

We evaluate immunological effects of opioid peptide endomorphin-2 on the production of cytokines related to inflammation and Th1/Th2 balance, and functions related to innate immune of rat peritoneal macrophages. Endomorphin-2 inhibited TNF-alpha, IL-10, and IL-12 productions, but potentiated IL-1beta production by macrophages. Moreover, endomorphin-2 potentiated macrophage adhesion to fibronectin, and the expression of adhesion molecule Mac-1 on macrophages. In contrast, endomorphin-2 suppressed phagocytosis of opsonized E. coli by macrophages, without affecting phagocytosis of non-opsonized E. coli. In addition, endomorphin-2 inhibited macrophage chemotaxis, and the production of superoxide anion by macrophages. These results suggest that endomorphin-2 may alter macrophage functions such as cytokine productions and functions related to innate immune.

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Year:  2002        PMID： 12238565     DOI： 10.1023/a:1019766602138

Source DB:  PubMed          Journal:  Inflammation        ISSN： 0360-3997            Impact factor:   4.092


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