Depletion of acetate-producing bacteria from the gut microbiota facilitates cognitive impairment through the gut-brain neural mechanism in diabetic mice

Microbiome

Yuping Li¹  Weihong Song²  Chen Li³  Yafei Zheng³  Pengtao Xu³  Hui Ji³  Xiaokun Li³  Junjie Yan³  Xi Zhang³  Qiaoying Jiang³  Qingqing Xu³  Jie Ning³  Hong Zheng⁴  Hongchang Gao⁴  Limin Zhang⁵ 

[1] Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, 325015, Wenzhou, China;Institute of Aging, School of Mental Health, Wenzhou Medical University, 325035, Wenzhou, China;Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, China;Institute of Metabonomics & Medical NMR, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, China;Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, 325015, Wenzhou, China;Institute of Aging, School of Mental Health, Wenzhou Medical University, 325035, Wenzhou, China;State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, 430070, Wuhan, China;

关键词: Acetate;    Metabolome;    Diabetes;    Cognition;    Microbiome;    Gut-brain axis;   

DOI  :  10.1186/s40168-021-01088-9

来源: Springer

【 摘 要 】

BackgroundModification of the gut microbiota has been reported to reduce the incidence of type 1 diabetes mellitus (T1D). We hypothesized that the gut microbiota shifts might also have an effect on cognitive functions in T1D. Herein we used a non-absorbable antibiotic vancomycin to modify the gut microbiota in streptozotocin (STZ)-induced T1D mice and studied the impact of microbial changes on cognitive performances in T1D mice and its potential gut-brain neural mechanism.ResultsWe found that vancomycin exposure disrupted the gut microbiome, altered host metabolic phenotypes, and facilitated cognitive impairment in T1D mice. Long-term acetate deficiency due to depletion of acetate-producing bacteria resulted in the reduction of synaptophysin (SYP) in the hippocampus as well as learning and memory impairments. Exogenous acetate supplement or fecal microbiota transplant recovered hippocampal SYP level in vancomycin-treated T1D mice, and this effect was attenuated by vagal inhibition or vagotomy.ConclusionsOur results demonstrate the protective role of microbiota metabolite acetate in cognitive functions and suggest long-term acetate deficiency as a risk factor of cognitive decline.9cNWQAXYUcub27-EQKqGKfVideo Abstract

【 授权许可】

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