Department of Bioconvergence, Hoseo University, Asan 31499, Republic of Korea.
Department of Computer and Data Analysis, Northern Arizona University, Flagstaff, AZ 86011, USA.
Int J Mol Sci. 2024 Feb 11;25(4):2183. doi: 10.3390/ijms25042183.
Metabolic dysfunction-associated fatty liver disease (MAFLD), formerly known as non-alcoholic fatty liver disease (NAFLD), is characterized by hepatic fat accumulation by metabolic dysfunction. The rising prevalence of MAFLD, especially among Asians, may be associated with changes in gut microbiota. We investigated gut microbiota characteristics and potential mechanisms leading to MAFLD development according to enterotypes. Case-control studies examining the gut microbiota composition between MAFLD and non-MAFLD participants were searched in public databases until July 2023. Gut microbiota was categorized into two enterotypes by principal component analysis. According to the enterotypes, LEfSe, ALDEx2, XGBoost, and DCiPatho were utilized to identify differential abundances and pathogenic microbes in the gut between the MAFLD and non-MAFLD groups. We analyzed microbial community networks with the SprCC module and predicted microbial functions. In the Prevotella enterotype (ET-P), 98.6% of Asians and 65.1% of Caucasians were associated with MAFLD ( = 0.049). MAFLD incidence was correlated with enterotype, age, obesity, and ethnicity ( < 0.05). Asian MAFLD patients exhibited decreased Firmicutes and and increased Bacteroidetes and . The pathogenicity scores were 0.006 for and 0.868 for . The Asian MAFLD group showed decreased stability and complexity in the gut microbiota network. Metagenome function analysis revealed higher fructose metabolism and lipopolysaccharide (LPS) biosynthesis and lower animal proteins and α-linolenic acid metabolism in Asians with MAFLD compared with the non-MAFLD group. LPS biosynthesis was positively correlated with ( < 0.05). In conclusion, emerged as a potential microbial biomarker for MAFLD. These findings enhance our understanding of the pathological mechanisms of MAFLD mediated through the gut microbiota, providing insights for future interventions.
代谢相关脂肪性肝病(MAFLD),以前称为非酒精性脂肪性肝病(NAFLD),其特征是代谢功能障碍导致肝内脂肪堆积。MAFLD 的患病率不断上升,尤其是在亚洲人群中,这可能与肠道微生物群的变化有关。我们根据肠型研究了 MAFLD 发展相关的肠道微生物群特征和潜在机制。在公共数据库中检索了直到 2023 年 7 月为止的 MAFLD 和非 MAFLD 参与者之间肠道微生物群组成的病例对照研究。通过主成分分析将肠道微生物群分为两种肠型。根据肠型,使用 LEfSe、ALDEx2、XGBoost 和 DCiPatho 鉴定 MAFLD 和非 MAFLD 组之间肠道中的差异丰度和致病微生物。我们使用 SprCC 模块分析微生物群落网络并预测微生物功能。在普雷沃氏菌肠型(ET-P)中,98.6%的亚洲人和 65.1%的白种人患有 MAFLD( = 0.049)。MAFLD 的发病率与肠型、年龄、肥胖和种族有关( < 0.05)。亚洲 MAFLD 患者的厚壁菌门减少,拟杆菌门增加。的致病性评分分别为 0.006 和 0.868。亚洲 MAFLD 组的肠道微生物群网络稳定性和复杂性降低。宏基因组功能分析显示,与非 MAFLD 组相比,亚洲 MAFLD 患者的果糖代谢和脂多糖(LPS)生物合成增加,动物蛋白和α-亚麻酸代谢减少。LPS 生物合成与呈正相关( < 0.05)。总之,被认为是 MAFLD 的潜在微生物生物标志物。这些发现提高了我们对肠道微生物群介导的 MAFLD 病理机制的理解,为未来的干预提供了依据。