老年人大便性状与肠道菌群的相关性分析

被引:15
作者
李姝敏
张勤
吴月
李金优
杨云梅
机构
[1] 浙江大学医学院附属第一医院老年病科
关键词
粪便; 菌群; 肠道; 老年人;
D O I
暂无
中图分类号
R57 [消化系及腹部疾病];
学科分类号
100201 [内科学];
摘要
目的比较老年人不同大便性状与肠道菌群间的相关性。方法将23例老年患者根据bristol大便分型分成便秘组(13例)及便溏组(10例),并同期选择9例健康人群为对照组。留取新鲜粪便样本并提取DNA,对细菌16S r DNA基因V4区进行粪便微生物DNA测序,对测序结果进行生物信息学分析。同时,采用酶联免疫吸附试验(ELISA)检测肿瘤坏死因子α(TNF-α)、白细胞介素10(IL-10)、IL-17、IL-22、白三烯B4(LTB-4)及前列腺素E2(PGE2)水平。采用Spearman法分析肠道菌群相对丰度与大便性状的相关性。结果三组患者间Shannon指数和Simpson指数比较,差异均有统计学意义(H=8.449,P=0.015;H=6.884,P=0.032),且便秘组患者Shannon指数[6.4(5.8,6.6)vs. 5.0(4.8,5.6)]和Simpson指数[0.95(0.93,0.97)vs. 0.88(0.83,0.94)]均显著高于便溏组患者(P均<0.05)。但三组患者间Ace指数和Chao指数比较,差异均无统计学意义(H=3.821,P=0.148;H=3.516,P=0.172)。三组患者间柯林斯均属(H=6.599,P=0.037)、丁酸弧菌属(H=8.707,P=0.013)、嗜胆菌属(H=7.354,P=0.025)、厌氧棍状均属(H=6.179,P=0.046)、巨球形均属(H=6.095,P=0.047)的相对丰度比较,差异均有统计学意义。而三组患者间TNF-α、IL-10、IL-17、IL-22、LTB-4及PGE2的比较,差异均无统计学意义(F=0.442、1.034、3.217、0.957、0.595、1.440,P均> 0.05)。同时,柯林斯菌属、丁酸弧菌属、嗜胆菌属、厌氧棍状菌属与大便稠度显著正相关(r=0.455、0.415、0.449、0.411,P=0.009、0.018、0.010、0.019)。结论在老年人中,大便性状的不同与肠道菌群的变化有关。
引用
收藏
页码:217 / 222
页数:6
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