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印度尔-3-酸对沙门氏菌的保护作用 Typhimurium:炎症适度和肠道微生物群恢复
Yuxin Fan1,2, Qinglong Song3, Siyu Li1,2
1State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
印醇-3-酸 (IAA) 预处理通过减少炎症和改善肠道屏障功能,保护小鼠免受沙门氏菌型菌感染. 这种微生物代谢物还恢复了健康的肠道微生物群,提供了潜在的治疗策略.
科学领域:
- 微生物学和免疫学
- 胃肠病学 胃肠病学
- 代谢学 代谢学 代谢学
背景情况:
- 印度尔-3-酸 (IAA) 是一种微生物代谢物,对肠道平衡至关重要.
- 在减轻动物病原体感染 (如沙门氏菌) 中IAA的作用基本上是未知的.
- 调查IAA对沙门氏菌 (ST) 的预防潜力对于动物健康至关重要.
研究的目的:
- 在小鼠模型中评估IAA预治疗对ST感染的预防疗效.
- 评估IAA对炎症反应,肠道屏障完整性和肠道微生物群失调的影响.
- 探索IAA作为沙门氏菌诱导肠炎的治疗剂的潜力.
主要方法:
- 小鼠在受到沙门氏菌型 (ST) SL1344.4的挑战之前,先用IAA进行预治疗.
- 评估了临床症状,组织病理损伤和促炎性细胞因子基因表达 (IL-17A,TNF-α,IL-1β,IL-6).
- 通过检查紧结蛋白表达,评估了肠道屏障的完整性.
- 用16S rRNA基因测序分析了肠道微生物组成.
主要成果:
- IAA预治疗显著改善了ST诱导的临床症状和组织病理损伤.
- IAA抑制了结肠,大肠和肝脏的促炎性细胞因子表达,保持了肠道屏障功能.
- 16S rRNA测序显示,IAA恢复了肠道微生物群结构,丰富了有益细菌并抑制了沙门氏菌的扩散.
结论:
- 在小鼠中,口服IAA的使用显示出对沙门氏菌typhimurium感染有显著的预防作用.
- IAA缓解炎症,增强肠道屏障的完整性,并纠正结肠微生物群失调.
- IAA为治疗细菌性肠炎和促进肠道健康提供了一个有前途的治疗候选药物.
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