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Transverse aortic constriction induces gut barrier alterations, microbiota remodeling and systemic inflammation

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Item Type:Article
Title:Transverse aortic constriction induces gut barrier alterations, microbiota remodeling and systemic inflammation
Creators Name:Boccella, N. and Paolillo, R. and Coretti, L. and D'Apice, S. and Lama, A. and Giugliano, G. and Schiattarella, G.G. and Cuomo, M. and d'Aquino, I. and Cavaliere, G. and Paciello, O. and Mollica, M.P. and Mattace Raso, G. and Esposito, G. and Lembo, F. and Perrino, C.
Abstract:Accumulating evidence suggests that modifications of gut function and microbiota composition might play a pivotal role in the pathophysiology of several cardiovascular diseases, including heart failure (HF). In this study we systematically analysed gut microbiota composition, intestinal barrier integrity, intestinal and serum cytokines and serum endotoxin levels in C57BL/6 mice undergoing pressure overload by transverse aortic constriction (TAC) for 1 and 4 weeks. Compared to sham-operated animals, TAC induced prompt and strong weakening of intestinal barrier integrity, long-lasting decrease of colon anti-inflammatory cytokine levels, significant increases of serum levels of bacterial lipopolysaccharide and proinflammatory cytokines. TAC also exerted effects on microbiota composition, inducing significant differences in bacterial genera inside Actinobacteria, Firmicutes, Proteobacteria and TM7 phyla as shown by 16S rDNA sequencing of fecal samples from TAC or sham mice. These results suggest that gut modifications represent an important element to be considered in the development and progression of cardiac dysfunction in response to TAC and support this animal model as a valuable tool to establish the role and mechanisms of gut-heart crosstalk in HF. Evidence arising in this field might identify new treatment options targeting gut integrity and microbiota components to face adverse cardiac events.
Keywords:Animal Disease Models, Aortic Valve Stenosis, Biomarkers, Disease Susceptibility, Dysbiosis, Echocardiography, Feces, Gastrointestinal Microbiome, Heart Failure, Heart Function Tests, Inflammation, Intestinal Mucosa, Metagenome, Metagenomics, Permeability, Ventricular Remodeling, Animals, Mice
Source:Scientific Reports
Publisher:Nature Publishing Group
Page Range:7404
Date:1 April 2021
Official Publication:https://doi.org/10.1038/s41598-021-86651-y
PubMed:View item in PubMed

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