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Nesbitt Endowed Chair"],"award-info":[{"award-number":["Ray B. Nesbitt Endowed Chair"]}],"id":[{"id":"10.13039\/100007904","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100008090","name":"Tufts University","doi-asserted-by":"publisher","award":["Karol Family Professorship"],"award-info":[{"award-number":["Karol Family Professorship"]}],"id":[{"id":"10.13039\/100008090","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["elifesciences.org"],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>\n                    Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in Western countries. There is growing evidence that dysbiosis of the intestinal microbiota and disruption of microbiota-host interactions contribute to the pathology of NAFLD. We previously demonstrated that gut microbiota-derived tryptophan metabolite indole-3-acetate (I3A) was decreased in both cecum and liver of high-fat diet-fed mice and attenuated the expression of inflammatory cytokines in macrophages and\n                    <jats:italic>Tnfa<\/jats:italic>\n                    and fatty acid-induced inflammatory responses in an aryl-hydrocarbon receptor (AhR)-dependent manner in hepatocytes. In this study, we investigated the effect of orally administered I3A in a mouse model of diet-induced NAFLD. Western diet (WD)-fed mice given sugar water (SW) with I3A showed dramatically decreased serum ALT, hepatic triglycerides (TG), liver steatosis, hepatocyte ballooning, lobular inflammation, and hepatic production of inflammatory cytokines, compared to WD-fed mice given only SW. Metagenomic analysis show that I3A administration did not significantly modify the intestinal microbiome, suggesting that I3A\u2019s beneficial effects likely reflect the metabolite\u2019s direct actions on the liver. Administration of I3A partially reversed WD-induced alterations of liver metabolome and proteome, notably, decreasing expression of several enzymes in hepatic lipogenesis and \u03b2-oxidation. Mechanistically, we also show that AMP-activated protein kinase (AMPK) mediates the anti-inflammatory effects of I3A in macrophages. The potency of I3A in alleviating liver steatosis and inflammation clearly demonstrates its potential as a therapeutic modality for preventing the progression of steatosis to non-alcoholic steatohepatitis (NASH).\n                  <\/jats:p>","DOI":"10.7554\/elife.87458","type":"journal-article","created":{"date-parts":[[2023,6,6]],"date-time":"2023-06-06T14:04:49Z","timestamp":1686060289000},"update-policy":"https:\/\/doi.org\/10.7554\/elife.87458","source":"Crossref","is-referenced-by-count":53,"title":["Oral supplementation of gut microbial metabolite indole-3-acetate alleviates diet-induced steatosis and inflammation in mice"],"prefix":"10.7554","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6633-8192","authenticated-orcid":true,"given":"Yufang","family":"Ding","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01f5ytq51","id-type":"ROR","asserted-by":"publisher"}],"name":"Artie McFerrin Department of Chemical Engineering, Texas A&M 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