Impacts of sodium butyrate on intestinal mucosal barrier and intestinal microbial community in a weaned piglet model

作者：Han Liu, Jing Zhao, Wenju Zhang, Cunxi Nie · 发表于：Frontiers in Microbiology · 年份：2023 · DOI：10.3389/fmicb.2022.1041885 · 被引用次数：28 · 研究领域：Gut microbiota and health、Animal Nutrition and Physiology、Clinical Nutrition and Gastroenterology

Objective Butyrate is thought to enhance intestinal mucosal homeostasis, but the detailed mechanism remains unclear. Therefore, further investigation on the mechanism of butyrate regulation of intestinal mucosal homeostasis was performed. Materials and methods This study used weaned piglets with similar intestinal metabolic function to humans as a research model. The dietary supplemented 0.2% sodium butyrate group (0.2% S) and negative control group (CON) were established to detect the effects of butyrate on growth performance, intestinal tissue morphology, mucosal barrier function, and intestinal microbial community structure in weaned piglets. Results There was an increase in average daily gain (ADG) during three different experimental periods and a reduction in average daily feed intake (ADFI) and feed-to-gain ratio (F:G) during days 1–35 and days 15–35 in 0.2% S compared with CON ( P > 0.05). Furthermore, villus height in the ileum and duodenum was increased, and crypt depths in the colon and jejunum were reduced in both groups ( P < 0.05). Moreover, the ratio of villus height and crypt depth (V/C) in 0.2% S both in the ileum and jejunum was significantly increased ( P < 0.05) compared with CON. The relative mRNA expression of PKC , MUC1 , CLDN1 , and ITGB1 was upregulated in the ileum of 0.2% S compared with CON ( P < 0.05). The digesta samples of 0.2% S, both in the ileum ( P < 0.05) and colon, contained greater intestinal bacterial ab...