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Emerging evidence supports that intestinal microbial metabolite short-chain fatty acids (SCFAs) increase the pool of regulatory T cells (Tregs) in the colonic lamina propria (cLP) and protect against nonintestinal inflammatory diseases, such as atherosclerosis and post-infarction myocardial inflammation. However, whether and how SCFAs protect the inflamed aortas of subjects with abdominal aortic aneurysm (AAA) remains unclear. Here, the authors revealed the protective effect of SCFAs on AAA in mice and the expansion of Tregs in the cLP, and propionate exerted Treg-dependent protection against AAA by promoting the recirculation of cLP-Tregs through colonic draining lymph nodes (dLNs) to the inflamed aorta.
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http://dx.doi.org/10.1016/j.jacbts.2022.05.001 | DOI Listing |
Cell Mol Immunol
September 2025
Department of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Gut-derived metabolites are essential for liver fibrogenesis. The aim of this study was to determine the alteration of indole-3-propionic acid (IPA), a crucial tryptophan metabolite, in liver fibrosis and delineate the roles of enterogenic IPA in fibrogenesis. In the present study, metabolomics assays focused on tryptophan metabolism were applied to explore the decreased levels of IPA in the feces and serum of cirrhotic patients, as well as in the feces and portal vein serum of fibrotic mice.
View Article and Find Full Text PDFFront Microbiol
August 2025
State Key Laboratory of Microbial Diversity and Innovative Utilization, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.
Autism spectrum disorders (ASD), a group of neurodevelopmental disorders characterized by the core symptoms of impaired social communication and stereotyped behaviors, is strongly associated with dysregulated microbiota-gut-brain axis. Emerging evidence suggests that , which showed reduced abundance in ASD cohorts, holds therapeutic potential, though its interaction with host remain unexplored. Here, we investigated the efficacy and molecular basis of 4P-15 (4P-15) in BTBR /J (BTBR) mice, an idiopathic ASD mouse model.
View Article and Find Full Text PDFBiomed Pharmacother
September 2025
Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory of Intelligent Food Logistic and Processing, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China. Elec
This study explores the therapeutic effects of synbiotics on ulcerative colitis (UC) using an in vitro fermentation model and a Dextran Sulfate Sodium (DSS)-induced UC mouse model. We assessed the impact of synbiotics on probiotic proliferation, short-chain fatty acid (SCFA) production, metabolic regulation, and intestinal barrier function. Fructooligosaccharide (FOS) and Inulin (INU) significantly promoted probiotic growth and increased SCFA production, especially acetate, propionate, butyrate, and isobutyrate (p < 0.
View Article and Find Full Text PDFThis study investigates the mechanism by which Xintong Granules improve myocardial ischemia-reperfusion injury(MIRI) through the regulation of gut microbiota and their metabolites, specifically short-chain fatty acids(SCFAs). Rats were randomly divided based on body weight into the sham operation group, model group, low-dose Xintong Granules group(1.43 g·kg~(-1)·d~(-1)), medium-dose Xintong Granules group(2.
View Article and Find Full Text PDFAnim Sci J
September 2025
Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan.
Elevated blood nonesterified fatty acids (NEFA) concentration in prepartum increases the risk of postpartum diseases. This study evaluated whether intraruminal propylene glycol (PG) or sucrose (SC) administration could mitigate elevated blood NEFA induced by intravenous lipid infusion. Four nonlactating, nonpregnant Holstein cows fitted with rumen cannulas were used in a 4 × 4 Latin square design: intravenous saline infusion and ruminal administration of water (S + WT), lipid infusion and administration of water (L + WT), lipid infusion and PG administration (L + PG), and lipid infusion and SC administration (L + SC).
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