Therapeutic effects of different doses of polyethylene glycosylated porcine glucagon-like peptide-2 on ulcerative colitis in male rats

文献类型： 外文期刊

第一作者： Qi, Ke-ke

作者： Qi, Ke-ke;Lv, Jia-jia;Wu, Jie;Xu, Zi-wei

作者机构：

关键词： Porcine glucagon-like peptide-2;Ulcerative colitis;Tight junction;Inflammation cytokines

期刊名称：BMC GASTROENTEROLOGY （ 影响因子：3.067； 五年影响因子：3.441 ）

ISSN： 1471-230X

年卷期： 2017 年 17 卷

页码：

收录情况： SCI

摘要： Background: Polyethylene glycosylated (PEGylated) porcine glucagon-like peptide-2 (pGLP-2) considerably increases half-life and stability compared with the native pGLP-2, but the effective dose for intestinal damage is still unclear. This study aims to evaluate the available dose of polyethylene glycosylated porcine glucagon-like peptide-2 (PEG-pGLP-2), a modified, long-acting form of pGLP-2 in an experimental rat model of ulcerative colitis. Methods: Thirty-five male rats were randomly assigned into five groups: control, dextran sodium sulphate (DSS), DSS + PEG-pGLP-2(L), DSS + PEG-pGLP-2(M) and DSS + PEG-pGLP-2(H). Rats in control group received only water; other rats were fed with 5% (w/ v) DSS and intraperitoneally administered with 12.5, 25 and 100 nmol/ kg PEG-pGLP-2 daily for 6 days. Results: Compared with the control treatment, DSS treatment significantly (p < 0.05) decreased body weight change, colonic length, duodenal villus height and expression of zonula occludens-1, whereas significantly (p < 0.05) increased colonic damage score and expression of claudin-1, interleukin (IL)-1, IL-7, IL-10, interferon-. and tumour necrosis factor (TNF)-a in colon. However, the three doses of PEG-pGLP-2 all reduced these effects; these treatments significantly (p < 0.05) increased body weight change and duodenal villus height, whereas significantly (p < 0.05) decreased colonic damage score and expression of IL-1, IL-7 and TNF-a in colon. Specifically, low-dose (12.5 nmol/ kg/ d) PEG-pGLP-2 was effective. Conclusions: These results indicated that PEG-pGLP-2 is a novel and potentially effective therapy for intestinal healing in a relatively low dose.

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