饮食中的3-氨基酸可以增强肠道屏障的完整性,减轻实验性结肠炎
Miho Tanaka1, Takahiko Toyonaga1, Fumiyuki Nakagawa1
1Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
概括
在豆类中发现的3-氨基酸 (3-ABA) 强化了肠道屏障功能,减少了炎症. 在性结肠炎 (UC) 患者中观察到较低的3-ABA水平,这表明它对UC的治疗潜力.
科学领域:
- 胃肠病学 胃肠病学
- 微生物组研究 微生物组研究
- 营养科学 营养科学
背景情况:
- 肠上皮质屏障的破坏是性结肠炎 (UC) 发病的一个关键因素.
- 肠道微生物代谢物在维持肠道健康方面发挥着作用.
- 饮食成分可以影响肠道屏障功能和炎症.
研究的目的:
- 为了确定调节肠道上皮质透性和炎症的食代谢物.
- 为了研究3-氨基酸 (3-ABA) 在性结肠炎中的作用.
- 探索3-ABA作为UC的潜在治疗剂.
主要方法:
- 对肠道微生物代谢物进行查,以检测其增强屏障的特性.
- 使用Caco2细胞进行体外研究,以评估上皮膜透性和紧结蛋白表达.
- 液体染色学-质谱学用于量化饮食和便样本中的3-ABA水平.
- 肠道微生物群的元基因组和功能预测分析.
- 德克斯硫酸 (DSS) 诱导的大肠炎小鼠模型来评估3-ABA的疗效.
主要成果:
- 3-阿米诺子酸 (3-ABA) 在体外显著增强了表皮屏障功能.
- 与健康个体相比,UC患者的便3-ABA水平较低.
- 患有UC的患者表现出肠道失调,并增加了ABA降解的细菌基因.
- 通过改善屏障功能和减少炎症,3-ABA的使用改善了小鼠的结肠炎.
- 在上皮细胞中的3-ABA上调紧接分子 (CLDN1,TJP1).
结论:
- 3-阿米诺酸 (3-ABA) 是一种饮食代谢物,可以增强肠道上皮屏障.
- 在UC患者中,便中的3-ABA水平降低与失生症和加速降解有关.
- 3-ABA通过向上皮质完整性和炎症来证明性结肠炎的治疗潜力.
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