Mapping the Influence of the Gut Microbiota on Small Molecules across the Microbiome Gut Brain Axis.

Mapping the Influence of the Gut Microbiota on Small Molecules across the Microbiome Gut Brain Axis.
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DOI:
10.1021/jasms.1c00298
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发表时间:
2022-04-06
影响因子:
3.2
通讯作者:
Wall, Daniel M.
Wall, Daniel M.
中科院分区:
化学3区
文献类型:
--
作者:
Hulme, Heather;Meikle, Lynsey M.;Strittmatter, Nicole;Swales, John;Hamm, Gregory;Brown, Sheila L.;Milling, Simon;MacDonald, Andrew S.;Goodwin, Richard J. A.;Burchmore, Richard;Wall, Daniel M.

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Microbes exert influence across the microbiome–gut–brain axis through neurotransmitter production, induction of host immunomodulators, or the release or induction of other microbial or host molecules. Here, we used mass spectrometry imaging (MSI), a label-free imaging tool, to map molecular changes in the gut and brain in germ-free, antibiotic-treated and control mice. We determined spatial distribution and relative quantification of neurotransmitters and their precursors in response to the microbiome. Using untargeted MSI, we detected a significant change in the levels of four identified small molecules in the brains of germ-free animals compared to controls. However, antibiotic treatment induced no significant changes in these same metabolites in the brain after 1 week of treatment. This work exemplifies the utility of MSI as a tool for the study of known and discovery of novel, mediators of microbiome-gut-brain axis communication.
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