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肠道炎症和急性期反应对低密度脂蛋白胆固醇的调节。

Regulation of low-density lipoprotein cholesterol by intestinal inflammation and the acute phase response.

机构信息

Department of Cardiovascular Sciences, Glenfield Hospital, University of Leicester, Groby Road, Leicester, Leicestershire, LE3 9QP, UK.

Department of Biomedical and Forensic Sciences, Anglia Ruskin University, East Road, Cambridge, Cambridgeshire, CB1 1PT, UK.

出版信息

Cardiovasc Res. 2018 Feb 1;114(2):226-232. doi: 10.1093/cvr/cvx237.

Abstract

Systemic inflammation, induced by disease or experimental intervention, is well established to result in elevated levels of circulating triglycerides, and reduced levels of high-density lipoprotein-cholesterol (HDL-C), in most mammalian species. However, the relationship between inflammation and low-density lipoprotein-cholesterol (LDL-C) concentrations is less clear. Most reports indicate that systemic inflammation, as observed during sepsis or following high dose experimental endotoxaemia, lowers total, and LDL-C in man. However, isolated reports have suggested that certain inflammatory conditions are associated with increased LDL-C. In this review, we summarize the emerging evidence that low-grade inflammation specifically of intestinal origin may be associated with increased serum LDL-C levels. Preliminary insights into potential mechanisms that may mediate these effects, including those connecting inflammation to trans-intestinal cholesterol efflux (TICE), are considered. We conclude that this evidence supports the potential downregulation of major mediators of TICE by inflammatory mediators in vitro and during intestinal inflammation in vivo. The TICE-inflammation axis therefore merits further study in terms of its potential to regulate serum LDL-C, and as a readily druggable target for hypercholesterolaemia.

摘要

系统性炎症,由疾病或实验干预引起,在大多数哺乳动物物种中被证实会导致循环甘油三酯水平升高,高密度脂蛋白胆固醇(HDL-C)水平降低。然而,炎症与低密度脂蛋白胆固醇(LDL-C)浓度之间的关系并不明确。大多数报告表明,全身性炎症,如脓毒症或大剂量实验内毒素血症期间观察到的炎症,会降低人类的总胆固醇和 LDL-C。然而,一些孤立的报告表明,某些炎症状态与 LDL-C 升高有关。在这篇综述中,我们总结了越来越多的证据表明,源自肠道的低度炎症可能与血清 LDL-C 水平升高有关。考虑了可能介导这些影响的潜在机制的初步见解,包括将炎症与跨肠胆固醇外排(TICE)联系起来的机制。我们得出结论,这一证据支持体外炎症介质和体内肠道炎症期间可能下调 TICE 的主要介质。因此,TICE-炎症轴值得进一步研究,以了解其调节血清 LDL-C 的潜力,以及作为高胆固醇血症的一个易于用药的靶点。

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