李天琪, 孙珊珊, 张金月, 王映红. 高脂血症金黄地鼠粪便和肠道内容物代谢轮廓的研究J. 药学学报, 2018,53(5): 791-796. doi: 10.16438/j.0513-4870.2018-0027
引用本文: 李天琪, 孙珊珊, 张金月, 王映红. 高脂血症金黄地鼠粪便和肠道内容物代谢轮廓的研究J. 药学学报, 2018,53(5): 791-796. doi: 10.16438/j.0513-4870.2018-0027
LI Tian-qi, SUN Shan-shan, ZHANG Jin-yue, WANG Ying-hong. Metabolic profile of feces and intestinal contents in hyperlipidemic hamsterJ. Acta Pharmaceutica Sinica, 2018,53(5): 791-796. doi: 10.16438/j.0513-4870.2018-0027
Citation: LI Tian-qi, SUN Shan-shan, ZHANG Jin-yue, WANG Ying-hong. Metabolic profile of feces and intestinal contents in hyperlipidemic hamsterJ. Acta Pharmaceutica Sinica, 2018,53(5): 791-796. doi: 10.16438/j.0513-4870.2018-0027

高脂血症金黄地鼠粪便和肠道内容物代谢轮廓的研究

Metabolic profile of feces and intestinal contents in hyperlipidemic hamster

  • 摘要: 本研究探索了高脂饮食对金黄地鼠粪便和肠道内容物代谢轮廓的影响,为高脂血症临床诊断及药物作用机制研究提供新信息。高脂饮食和正常饮食各饲喂12只金黄地鼠分别作为模型组和对照组,采集正常组和模型组高脂饮食诱导后2、4、8周后的血清进行血清生化指标测试,发现模型组血清中甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)水平持续高于对照组。8周时取动物粪便和肠道内容物,并将其分为空肠、回肠、盲肠、结肠四段,采用基于1H NMR的代谢组学技术结合多元统计方法分析粪便和肠道内容物中内源性代谢产物的变化及其规律。通过正交偏最小二乘法-判别分析法(OPLS-DA)发现高脂血症模型组与对照组的代谢轮廓产生明显区分。粪便中包括氨基酸、脂肪酸、三羧酸循环中间产物和核苷酸等与肠道菌群有关的内源性代谢物发生显著变化(P<0.05);肠道内容物中氨基酸代谢物、蛋白质腐败产物、胆碱代谢物发生显著变化(P<0.05)。本研究从代谢物分子水平探讨了肠道菌群在金黄地鼠高脂血症发生发展过程中的重要作用,这一结果为治疗高脂血症的药物研发及临床治疗提供了有用信息及新的研究思路。

     

    Abstract: The study was designed to explore the influence of high-fat diet on the metabolism profile of feces and intestinal contents of golden hamster to provide new information for the mechanism of drug action. Twelve golden hamsters fed with high-fat diet and twelve golden hamsters fed with normal diet were used as model group and control group, respectively. Serum samples were collected from the normal group and the model group at 2 weeks, 4 weeks and 8 weeks after the induction of high-fat diet. Serum biochemical parameters were measured in the control and model groups. The levels of triglyceride (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) levels in model group were higher than the control group. After 8 weeks, the feces and intestine contents were taken. The intestine was divided into four sections:jejunum, ileum, cecum and colon. The changes of endogenous metabolites in intestinal contents were analyzed by 1H NMR based metabolomics combined with multivariate statistical analysis to find the significant differences in metabolites. The metabolic profiles of hyperlipidemia model group and control group were significantly distinguished by the othorgonal partial least squares-discriminate analysis, (OPLS-DA). Compared with the control group, the endogenous metabolites in feces such as amino acids, fatty acids, tricarboxylic acid cycle intermediates and nucleotides related to intestinal microflora were changed significantly (P<0.05), and the amino acid metabolites, protein spoilage products and choline metabolites in intestinal contents had significant changes (P<0.05). The data suggest that the intestinal microflora plays an important role in the development of hyperlipidemia in golden hamsters from the molecular level of metabolites. This result provides useful information for the clinical treatment of hyperlipidemia and development of hyperlipidemia drug.

     

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