武国敏 高 群*
安徽医科大学附属宿州医院
摘要(Abstract):
目的探讨胆管结石复发患者的胆汁微生物组特征,并构建复发风险预测模型。方法前瞻性纳入接受ERCP治疗的胆管结石患者120例,根据随访结果分为复发组(n=38)和非复发组(n=82)。采集胆汁样本行16SrRNA测序,比较两组微生物多样性及差异菌属,并基于关键菌群构建机器学习预测模型。结果复发组α多样性显著降低(Shannon指数2.41±0.52vs3.08±0.61,P<0.001),β多样性存在明显分离(P<0.01)。复发组Enterococcus、Klebsiella、Escherichia-Shigella丰度升高,而Lactobacillus、 Faecalibacterium降低(均P<0.05)。基于关键菌属构建的XGBoost模型在训练集和验证集AUC分别为0.88和0.85。结论胆管结石复发与胆汁微生物组失衡密切相关。基于胆汁微生物特征构建的预测模型具有较好的判别能力,可为胆管结石术后复发风险评估提供新的工具。
关键词(KeyWords):
胆管结石复发;胆汁微生物组;16SrRNA测序;机器学习;预测模型
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