该文用D-半乳糖(D-galactose,D-gal)颈脊皮下注射建立衰老小鼠模型,评价黄酒对衰老小鼠模型肠道菌群结构的影响。通过设立空白对照、模型组、黄酒组,6周后测定其抗氧化酶活力,同时采用Morris水迷宫对小鼠的认知能力进行测试。收集小鼠粪便,利用IonS5TMXL高通量测序平台对肠道细菌16S rDNA基因进行测序,探索黄酒摄入对衰老小鼠肠道微生物菌群的影响。结果表明,D-gal致衰老小鼠模型的抗氧化相关酶活性明显降低,丙二醛(malondialdehyde,MDA)水平显著增高(P<0.05);黄酒干预后,各剂量组小鼠体内多种抗氧化酶活性升高,MDA含量显著下降(P<0.05);在行为学实验中,适量黄酒干预能够显著提高D-gal致衰老小鼠的认知能力(P<0.05);高通量测序发现黄酒干预显著改善了D-gal致衰老小鼠的肠道菌群结构;进一步分析菌群组成发现,黄酒显著改善了衰老小鼠模型的Firmicutes和Bacteroidetes的相对丰度(P<0.05),显著提升了Bacteroides、Lactobacillus、Bifidobacterium、Lachnospiracea和Butyricicoccus的相对丰度(P<0.05)。适量黄酒摄入可一定程度上改善衰老所致的肠道菌群结构失衡现象,有助于延缓衰老。
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