Guangxi Vocational & Technical Institute of Industry, Nanning 530001, China.
College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
Nutrients. 2022 Sep 22;14(19):3931. doi: 10.3390/nu14193931.
This study aimed to compare the regulatory effects of Arenga pinnata retrograded starch (APRS), Arenga pinnata starch (APS), and whole Arenga pinnata flour (APF) on gut microbiota and improvement of intestinal inflammation in aged mice. APF, APS, and APRS altered gut microbiota composition and exhibited different prebiotic effects. Bifidobacterium showed the greatest increase in feces of aged mice fed APF. The abundance of genus Lachnospiraceae_NK4A136 was highest in the APS group. APRS supplementation led to a greatest increasement in abundance of Lactobacillus, Roseburia, and Faecalibacterium prausnitzii. APRS induced significantly more short-chain fatty acid (SCFAs) production than APF and APS. APF, APS, and APRS treatments improved intestinal inflammation in aged mice and the order of ameliorative effect was APRS > APS > APF. APRS significantly decreased relative mRNA expression of pro-inflammatory cytokines (IL-6, IL-1β, and TNF-α) and increased anti-inflammatory cytokines (IL-10). In addition, APF, APS, and APRS significantly downregulated the relative mRNA expression of senescence-associated gene p53 and upregulated the expression of anti-aging gene Sirt1. These results provide potentially useful information about the beneficial effects of Arenga pinnata products on human health.
本研究旨在比较露兜树反刍淀粉(APRS)、露兜树淀粉(APS)和露兜树全粉(APF)对肠道微生物群的调节作用及其对老年小鼠肠道炎症的改善作用。APF、APS 和 APRS 改变了肠道微生物群组成,并表现出不同的益生元作用。双歧杆菌在饲喂 APF 的老年小鼠粪便中的增加最为明显。属 Lachnospiraceae_NK4A136 的丰度在 APS 组最高。APRS 补充剂导致乳酸杆菌、罗斯伯里氏菌和普拉氏梭菌丰度的最大增加。APRS 诱导的短链脂肪酸(SCFA)生成量明显高于 APF 和 APS。APF、APS 和 APRS 处理改善了老年小鼠的肠道炎症,其改善效果的顺序为 APRS > APS > APF。APRS 显著降低了促炎细胞因子(IL-6、IL-1β 和 TNF-α)的相对 mRNA 表达,增加了抗炎细胞因子(IL-10)的表达。此外,APF、APS 和 APRS 显著下调了衰老相关基因 p53 的相对 mRNA 表达,上调了抗衰老基因 Sirt1 的表达。这些结果为露兜树产品对人类健康的有益作用提供了有价值的信息。