文章基本信息

标题：Glutamine supplementation improves intestinal cell proliferation and stem cell differentiation in weanling mice
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作者：Siyuan Chen ; Yaoyao Xia ; Guoqiang Zhu 等
期刊名称：Food & Nutrition Research
印刷版ISSN：1654-661X
出版年度：2018
卷号：62
DOI：10.29219/fnr.v62.1439
语种：English
出版社：Co-Action Publishing
摘要：BackgroundIntestinal stem cells can be differentiated into absorptive enterocytes and secretory cells, including Paneth cells, goblet cells, and enteroendocrine cells. Glutamine is a primary metabolic fuel of small intestinal enterocytes and is essential for the viability and growth of intestinal cells.ObjectiveWhether glutamine supplementation affects the differentiation of intestinal stem cells is unknown.DesignThree-week-old ICR (Institute of Cancer Research) male mice were divided randomly into two groups: 1) mice receiving a basal diet and normal drinking water and 2) mice receiving a basal diet and drinking water supplemented with glutamine. After 2 weeks, the mice were sacrificed to collect the ileum for analysis.ResultsThe study found that glutamine supplementation in weanling mice decreases the crypt depth in the ileum, leading to higher ratio of villus to crypt in the ileum, but promotes cell proliferation of intestinal cells and mRNA expression of Lgr5 (leucine-rich repeat-containing g-protein coupled receptor5) in the ileum. Glutamine has no effect on the number of Paneth cells and goblet cells, and the expression of markers for absorptive enterocytes, Paneth cells, goblet cells, and enteroendocrine cells.ConclusionThese findings reveal the beneficial effects of dietary glutamine supplementation to improve intestinal morphology in weanling mammals.