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Deprecated: Implicit conversion from float 292.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 World+J+Gastroenterol 2017 ; 23 (21): 3850-63 Nephropedia Template TP
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Sodium selenite ameliorates dextran sulfate sodium-induced chronic colitis in mice by decreasing Th1, Th17, and ??T and increasing CD4(+)CD25(+) regulatory T-cell responses #MMPMID28638225
Sang LX; Chang B; Zhu JF; Yang FL; Li Y; Jiang XF; Wang DN; Lu CL; Sun X
World J Gastroenterol 2017[Jun]; 23 (21): 3850-63 PMID28638225show ga
AIM: To assess the effect of sodium selenite on the severity of dextran sulfate sodium (DSS)-induced colitis in C57BL/6 mice. METHODS: Mice were randomly divided into four groups (n = 10/group): normal group, selenium (Se) group, chronic colitis group, and Se + chronic colitis group. The mice were sacrificed on day 26. Survival rates, clinical symptoms, colon length, and histological changes were determined. The percentages and absolute numbers of immune system cells in the lamina propria lymphocytes (LPL) of the colon, the expression of mRNA in colon tissue, and the concentrations of Th1, Th17, and Treg cytokines in LPL from the large intestine, were measured. RESULTS: Se significantly ameliorated the symptoms of colitis and histological injury (P < 0.05 each), increasing the proportions of neutrophils and CD4+ CD25+ T cells (P < 0.05 each) and decreasing the proportions of ??T cells, CD4+, CD4+CD44+, and CD4+ CD69+ T cells in LPL (P < 0.05 each). Moreover, Se reduced the expression of IL-6, IFN-?, IL-17A, IL-21, T-bet, and ROR?t (P < 0.05 each), but enhanced the expression of IL-10 and Foxp3 (P < 0.05 each). CONCLUSION: These results suggest that Se protects against DSS-induced chronic colitis perhaps by increasing the number of CD4(+)CD25(+) Tregs that suppress the secretion of proinflammatory cytokines and populations of Th1, Th17, and ??T cells.