Author : Karuna Patil
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (932 download)
Book Synopsis Murine Norovirus Abrogates Chlamydia Pneumoniae Accelerated Atherosclerosis in ApoE-/- Mice by : Karuna Patil
Download or read book Murine Norovirus Abrogates Chlamydia Pneumoniae Accelerated Atherosclerosis in ApoE-/- Mice written by Karuna Patil and published by . This book was released on 2015 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chlamydia pneumoniae (Cpn), a common respiratory pathogen of humans, has a strong seroepidemiologic association with cardiovascular disease as well as the ability to accelerate atherosclerosis in hyperlipidemic animal models. Our laboratory recently demonstrated that murine norovirus (MNV), a highly prevalent infection of laboratory mice, can variably alter atherosclerosis in hyperlipidemic Ldlr-/- and ApoE-/- mice. Given that MNV has a tropism for macrophages and has been shown to exacerbate atherogenesis under particular conditions, we investigated whether concurrent MNV and Cpn infection could alter macrophage phenotypes in vitro and atherosclerosis in ApoE-/- mice. In the presence of oxidized low-density lipoprotein (oxLDL), co-infection of ApoE-/- bone marrow derived macrophages (BMDM) with MNV and Cpn resulted in increases in gene expression of IL-6, MCP-1, iNOS, and TNF-[unknown scientific symbol] as compared with Cpn mono-infected BMDM. Based on these findings, we hypothesized that concurrent MNV infection would exacerbate vascular inflammation and increase plaque lesion size in Cpn infected ApoE-/- mice. As demonstrated previously, Cpn infection alone resulted in significantly larger plaques (64% increase in mean size) as compared with uninfected mice. In mice co-infected with MNV and Cpn however, there was a 54% decrease in mean lesion size compared with Cpn mono-infected mice. Mechanisms by which MNV could elicit this unexpected abrogation in Cpn infected ApoE-/- mice were investigated. There were significant increases (P