植物乳杆菌通过上调L-氨酸生产来改善与NASH相关的炎症
Dong Yun Kim1,2,3, Jun Yong Park4,5, Heon Yung Gee6,7,8
1Department of Pharmacology, Yonsei University College of Medicine, Seoul, Republic of South Korea.
Experimental & molecular medicine
|November 1, 2023
概括
在非酒精性脂肪肝炎 (NASH) 模型中,Lactobacillus plantarum有效降低肝炎并改善代谢健康. 这种益生菌疗法增加了循环中的L-氨酸,减轻了肝脏炎症.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 代谢疾病 代谢疾病
背景情况:
- 乳酸菌种是公认的益生菌,对包括肝脏疾病在内的各种疾病有潜在的治疗应用.
- 非酒精性脂肪肝炎 (NASH) 是一个重大的健康问题,而Lactobacillus plantarum在治疗NASH及其机制中的有效性尚未得到充分了解.
研究的目的:
- 在临床前的小鼠模型中研究Lactobacillus plantarum对非酒精性脂肪肝炎 (NASH) 的治疗作用.
- 阐明L. plantarum对NASH病原发生产生影响的潜在机制.
主要方法:
- 一种胆缺乏高脂肪饮食 (CD-HFD) 诱导的小鼠模型被用来模仿人类代谢综合征和NASH.
- 进行了转录基因,基因基因和免疫组织化学分析,以评估L. plantarum治疗的影响.
- 验证研究包括肝脏有机体和甲素-胆缺乏 (MCD) 饮食小鼠模型.
主要成果:
- L. plantarum治疗显著降低了肝炎和改善了新陈代谢参数,包括胰岛素耐受性和肝脂含量.
- RNA测序显示,在L. plantarum给药后,炎症相关途径的下调.
- 甲基因组分析显示,参与L-氨酸生物合成的微生物基因的调节升高,血清L-氨酸水平相应增加.
结论:
- 在临床前模型中,Lactobacillus plantarum证明了对NASH的治疗效果.
- 该机制涉及增加循环L-氨酸水平,这独立地缓解肝脏炎症.
- 这项研究揭示了一个新的,反直觉的NASH治疗策略,利用L. plantarum和L-arginine.
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