便短链和分支链酸是炎症性肠病和UC和CD亚组的可能生物标志物吗? 一个案例对照研究
Justin K Gray1, Baochuan Guo1, Abdelraheem Baniahmad2
1Department of Chemistry, Cleveland State University, Cleveland, OH.
Journal of clinical gastroenterology
|August 21, 2025
概括
便短链脂肪酸 (SCFA) 和分支链脂肪酸 (BCFA) 是炎症性肠病 (IBD) 的生物标志物. 与目前的便calprotectin测试相比,这些代谢物具有更好的灵敏度和特异性.
科学领域:
- 胃肠病学
- 临床化学
- 微生物组研究
背景情况:
- 对便短链脂肪酸 (SCFA) 和分支链脂肪酸 (BCFA) 越来越感兴趣,因为它们已与炎症性肠病 (IBD) 产生联系.
- IBD涉及复杂的病理生理学,其中肠道微生物代谢物起着至关重要的作用.
研究的目的:
- 研究使用便SCFA和BCFA作为IBD诊断生物标志物的可行性.
- 评估这些脂肪酸在健康个体和IBD患者之间以及性结肠炎 (UC) 和克罗恩病 (CD) 亚型之间的区别方面的潜力.
主要方法:
- 一项病例对照研究,涉及74名健康个体,UC患者和CD患者的便样本.
- 使用气体染色体质谱法 (GC-MS) 量化特定的SCFA和BCFA.
- 使用接收器操作曲线 (ROC) 分析分析数据以确定诊断准确性.
主要成果:
- 通过对SCFA的特定转化,可以实现高诊断准确度 (AUC为0.96),以区分健康和IBD群体,灵敏度为92%和特异性为81%.
- 另一种转化在区分UC和CD亚组方面表现良好 (AUC为0. 83),显示出75%的灵敏度和86%的特异性.
- 酸是最丰富的SCFA,但其水平在健康和IBD组之间或UC和CD子组之间没有显著差异.
结论:
- 便中的SCFA和BCFA是IBD的可行的生物标志物,显示出改善诊断能力的潜力.
- 拟议的SCFA/BCFA生物标志物转换显示出比便calprotectin (FCP) 检测IBD更高的灵敏度和特异性.
- 需要进一步的验证研究,因为没有找到适合验证队列的文献数据.
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