期刊
WORLD JOURNAL OF GASTROENTEROLOGY
卷 16, 期 28, 页码 3529-3540出版社
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v16.i28.3529
关键词
Probiotics; Bio-Three; Peripheral blood mononuclear cells; Dendritic cells
资金
- Chang Gung Memorial Hospital [CMRPG470051]
- National Science Council of Taiwan [NSC-96-2314-B-182A-015-MY3]
AIM: To investigate the immune response of peripheral blood mononuclear cells (PBMCs) and dendritic cells (DCs) that were stimulated by probiotic preparations. METHODS: PBMCs were isolated, cultured, and stimulated with Bio-Three (a mixture of Bacillus mesentericus, Clostridium butyricum and Enterococcus faecalis; 10(5), 10(6) and 10(7) CFU/mL for 24 h). Cytokine production of (1) circulating PBMCs; (2) PBMCs stimulated by probiotic preparation; (3) monocyte-derived DCs; and (4) DC and T cell co-culture was determined by enzyme-linked immunosorbent assay. Phenotypic analysis of circulating PBMCs was also investigated by flow cytometry. Blood was obtained from individuals who consumed Bio-Three (10(9) CFU/d B. mesentericus, C butyricum and E. faecalis) for 2 wk, or those who did not take probiotics orally. RESULTS: In culture supernatants, interferon-gamma (IFN-gamma) and interleukin (IL)-10 production increased, but IL-4 and tumor necrosis factor-alpha (TNF-alpha) production by PBMCs decreased after 1 and 2 wk of probiotic treatment. Flow cytometry was also performed on day 14 and detected enhanced expression of CD11b, HLA-DR, CD4, CD45RA, CD25, CD44 and CD69 in response to Bio-Three. Furthermore, IL-10 and IL-12 were upregulated in supernatants of monocyte-derived DCs, and IFN-gamma and IL-10 were enhanced in supernatants of CD4(+) T cells co-cultured with DCs. CONCLUSION: Bio-Three appeared to stimulate the Th1 immune response, downregulate pro-inflammatory cytokines (TNF-alpha) and upregulate anti-inflammatory cytokine (IL-10). Probiotics could be effective in activation of PBMCs and DCs. (C) 2010 Baishideng. All rights reserved.
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