中國科學家發現非酒精性脂肪肝可由腸道細菌引起
作者:
小柯機器人發布時間:2019/9/23 14:42:23
首都兒科研究所袁靜研究員、中國科學院武漢病毒研究所劉翟研究員和軍事醫學科學院微生物流行病研究所楊瑞馥研究員等人合作發現非酒精性脂肪肝疾病(NAFLD)可由由腸道細菌引起。相關論文2019年9月19日在線發表於國際學術期刊《細胞—代謝》。
研究人員發現高產乙醇肺炎克雷伯菌(HiAlc Kpn)與中國隊列中高達60%患有NAFLD的個體相關。通過口腔管飼將HiAlc Kpn的臨床分離株轉移到小鼠體內,誘導了NAFLD。同樣,使用含有HiAlc-Kpn菌株的微生物菌群,將糞便微生物菌群移植(FMT)移植到小鼠中,該菌群是從NASH誘導的NAFLD個體中分離出來的。但是,在FMT之前選擇性消除HiAlc Kpn株可防止受體小鼠出現NAFLD。
這些結果表明,至少在某些NAFLD病例中,腸道微生物組的改變會由於內源性酒精產量過高而導致疾病。
據了解,NAFLD的潛在病因被認為是多種多樣的。腸道微生物群的變化已得到研究,並被認為至少導致了某些疾病,儘管其因果關係尚不清楚。
附:英文原文
Title: Fatty Liver Disease Caused by High-Alcohol-Producing Klebsiella pneumoniae
Author: Jing Yuan 13, 14
Chen Chen 13,Jinghua Cui 13,Jing Lu 13,Chao Yan 13,Xiao Wei,Xiangna Zhao,NanNan Li,Shaoli Li,Guanhua Xue,Weiwei Cheng,Boxing Li,Huan Li,Weishi Lin,Changyu Tian,Jiangtao Zhao,Juqiang Han,Daizhi An,Qiong Zhang,Hong Wei
Minghua Zheng,Xuejun Ma,Wei Li,Xiao Chen,Zheng Zhang,Hui Zeng,Sun Ying,JianXin Wu,Ruifu Yang,Di Liu
Issue&Volume: 19 September 2019
Summary:
The underlying etiology of nonalcoholic fatty liver disease (NAFLD) is believed to be quite varied. Changes in the gut microbiota have been investigated and are believed to contribute to at least some cases of the disease, though a causal relationship remains unclear. Here, we show that high-alcohol-producing Klebsiella pneumoniae (HiAlc Kpn) is associated with up to 60% of individuals with NAFLD in a Chinese cohort. Transfer of clinical isolates of HiAlc Kpn by oral gavage into mice induced NAFLD. Likewise, fecal microbiota transplant (FMT) into mice using a HiAlc-Kpn-strain-containing microbiota isolated from an individual with NASH induced NAFLD. However, selective elimination of the HiAlc Kpn strain before FMT prevented NAFLD in the recipient mice. These results suggest that at least in some cases of NAFLD an alteration in the gut microbiome drives the condition due to excess endogenous alcohol production.
DOI: 10.1016/j.cmet.2019.08.018
Source: https://www.cell.com/cell-metabolism/fulltext/S1550-4131(19)30447-4