胆道閉鎖症患者における肝吸虫症に伴う胆汁酸の変化
Shiwen Hua1, Xiang Li2, Zhenli Xu1
1Department of Public Health and Preventive Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.
Acta tropica
|January 23, 2026
まとめ
胆道閉鎖症(BO)患者における肝吸虫(C. sinensis)感染は、胆汁酸(BA)プロファイルを変化させ、主要なBAの減少が腸球菌の存在量と相関する。これは、寄生虫感染におけるBA代謝、腸内細菌、肝障害の関連を示唆している。
科学分野:
- 肝臓学; 寄生虫学; マイクロバイオーム研究
背景:
- 肝吸虫(C. sinensis)によって引き起こされる食品媒介性の寄生虫疾患である肝吸虫症は、胆道閉鎖症(BO)を含む重度の肝合併症と関連している。
- 胆汁酸(BA)異常はBOの進行に関与しているが、C. sinensis感染患者におけるその特定の役割は不明である。
研究 の 目的:
- C. sinensis感染の有無にかかわらず、BO患者における胆汁酸プロファイルの変化を調査すること。
- これらの患者における胆汁酸プロファイル、胆道内細菌叢、および肝障害マーカーとの関係を探求すること。
主な方法:
- BO患者(C. sinensis感染の有無にかかわらず)の胆汁サンプルをLC-MS/MSを用いてBAプロファイルについて分析した。
- 16S rRNA遺伝子配列決定により胆道内細菌叢の組成を決定した。
- スピアマン相関を用いて、BA、生化学的マーカー、および細菌叢との関連を評価した。
主要な成果:
- C. sinensisに感染したBO患者では、ケノデオキシコール酸(CDCA)、ウルデオキシコール酸(UDCA)、ヒデオキシコール酸(HDCA)、3β-コール酸(βCA)のレベルが著しく低下していた。; これらのBAレベルの低下は、腸球菌の存在量の増加と正の相関を示した。; アルカリ性ホスファターゼ(ALP)レベルは、C. sinensis感染群における特定の胆汁酸比率と強い正の相関を示した。
結論:
- BO患者におけるC. sinensis感染は、CDCA、UDCA、HDCA、およびβ-CAの減少を特徴とする、明確な胆汁酸プロファイルと関連していた。
- これらの所見は、肝吸虫症関連胆道閉鎖症における胆汁酸代謝、胆道内細菌叢組成(特に腸球菌)、および肝障害との間に重要な相互作用があることを示唆している。
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