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Intestinal Fatty Acid-binding Protein Mediates Atherosclerotic Progress Through Increasing Intestinal Inflammation and Permeability

Overview
Journal J Cell Mol Med
Date 2020 Mar 29
PMID 32220004
Citations 18
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Abstract

Atherosclerosis is one of leading phenotypes of cardiovascular diseases, featured with increased vascular intima-media thickness (IMT) and unstable plaques. The interaction between gastrointestinal system and cardiovascular homeostasis is emerging as a hot topic. Therefore, the present study aimed to explore the role of an intestinal protein, intestinal fatty acid-binding protein (I-FABP/FABP2) in the atherosclerotic progress. In western diet-fed ApoE mice, FABP2 was highly expressed in intestine. Silence of intestinal Fabp2 attenuated western diet-induced atherosclerotic phenotypes, including decreasing toxic lipid accumulation, vascular fibrosis and inflammatory response. Mechanistically, intestinal Fabp2 knockdown improved intestinal permeability through increasing the expression of tight junction proteins. Meanwhile, intestinal Fabp2 knockdown mice exhibited down-regulation of intestinal inflammation in western diet-fed ApoE mice. In clinical patients, the circulating level of FABP2 was obviously increased in patients with cardiovascular disease and positively correlated with the value of carotid intima-media thickness, total cholesterol and triglyceride. In conclusion, FABP2-induced intestinal permeability could address a potential role of gastrointestinal system in the development of atherosclerosis, and targeting on intestinal FABP2 might provide a therapeutic approach to protect against atherosclerosis.

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