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HCV in relation to cardiovascular conditions - Impact of direct-acting antiviral treatments?

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Sift through current research articles on the extrahepatic manifestations of hepatitis C, in particular HCV in relation to cardiovascular conditions.

World J Gastroenterol. Nov 7, 2018; 24(41): 4617-4621

Published online Nov 7, 2018. doi: 10.3748/wjg.v24.i41.4617

Editorial 
Chronic hepatitis C, atherosclerosis and cardiovascular disease: What impact of direct-acting antiviral treatments?

Luigi Elio Adinolfi, Luca Rinaldi, Riccardo Nevola 

Abstract

Hepatitis C virus (HCV) infection is associated with extrahepatic manifestations, among these there is an increased risk of atherosclerosis and cardiovascular disease as well as an increased cardiovascular mortality. Several direct and indirect HCV pro-atherogenic mechanisms have been proposed. HCV lives and replicates within carotid plaques, promoting a local environment of pro-atherogenic factors. In addition, it causes conditions such as insulin resistance, diabetes, hepatic steatosis, cryoglobulinemia and endotoxinemia that are associated with the development of atherosclerosis and cardiovascular disease. Therapeutic regimens based on direct-acting antiviral agents (DAA) are currently available with high efficacy in HCV clearance and improvement of liver disease, but does HCV eradication also improve atherosclerosis and the risk of cardiovascular disease? Recently, a multi-center study has shown that elimination of HCV improves carotid atherosclerosis. Two studies have shown that DAA treatments significantly reduce the risk of cardiovascular events. Several studies have assessed the impact of HCV clearance on pro-atherosclerosis metabolic conditions showing improvement in cardiovascular risk biomarkers, disappearance or improvement of insulin resistance, reduction of risk of developing diabetes and improvement of glycemic control. There are also evidences that HCV clearance promotes the recovery of cytokines and inflammatory markers associated with atherosclerosis and the disappearance of cryoglobulinemia. Available data show that clearance of HCV by DAAs is associated with an improvement in atherosclerosis and metabolic and immunological conditions that promote the development of cardiovascular disease. However, the data are not sufficient to allow definitive conclusions and further studies will be needed to definitively clarify the impact of HCV clearance on atherosclerosis and cardiovascular disease.

Direct and indirect factors considered responsible for development of atherosclerosis and cardiovascular disease in chronic hepatitis C patients and the possible effect of hepatitis C virus clearance by direct-acting antiviral agents on cardiovascular outcomes. DAAs: Direct-acting antiviral agents; IR: Insulin resistance; OXS: Oxidative stress; LPS: Lipopolysaccharide (endotoxinemia). 

Read the editorial: https://www.wjgnet.com/1007-9327/full/v24/i41/4617.htm

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