期刊
CARDIOVASCULAR RESEARCH
卷 118, 期 14, 页码 2973-2984出版社
OXFORD UNIV PRESS
DOI: 10.1093/cvr/cvab349
关键词
Diastolic dysfunction; Hypertrophy; Inflammation; Metabolic heart disease; NOX1
资金
- Swiss National Science Foundation [310030_144208]
- Foundation for Cardiovascular Research, Basel
- Swiss Diabetes Foundation
- Medical Division of the Margarete and Walter Lichtenstein Foundation, University of Basel, Switzerland
- European Union Commission's Seventh Framework programme [305507]
- ERA-Net-CVD project MacroERA [01KL1706]
- IMI2-CARDIATEAM [821508]
- Netherlands Cardiovascular Research Initiative CVON
- Dutch Heart Foundation (Hartstichting)
- CVON2016-Early HFPEF [2015-10]
- CVON She-PREDICTS [2017-21]
- CVON ArenaPRIME [2017-18]
- FWO [G091018N, G0B5930N]
- Dutch Heart Foundation (Hartstichting) [2013T084]
- CVON-RECONNECT Talent program grant from the Dutch Heart Foundation (Hartstichting)
- RECONNECT program
- Netherlands Cardiovascular Research Initiative CVON2014-11 RECONNECT
- Swiss National Science Foundation (SNF) [310030_144208] Funding Source: Swiss National Science Foundation (SNF)
NOX1 is involved in the pathogenesis of metabolic heart disease by mediating endothelial activation and contributing to myocardial inflammation and remodeling. Its high expression in monocytes of human patients suggests that NOX1 may be a potential target for mitigating heart disease associated with diastolic dysfunction.
Aims Microvascular inflammation plays an important role in the pathogenesis of diastolic dysfunction (DD) and metabolic heart disease. NOX1 is expressed in vascular and immune cells and has been implicated in the vascular pathology of metabolic disease. However, its contribution to metabolic heart disease is less understood. Methods and results NOX1-deficient mice (KO) and male wild-type (WT) littermates were fed a high-fat high-sucrose diet (HFHS) and injected streptozotocin (75 mg/kg i.p.) or control diet (CTD) and sodium citrate. Despite similar weight gain and increase in fasting blood glucose and insulin, only WT-HFHS but not KO-HFHS mice developed concentric cardiac hypertrophy and elevated left ventricular filling pressure. This was associated with increased endothelial adhesion molecule expression, accumulation of Mac-2-, IL-1 beta-, and NLRP3-positive cells and nitrosative stress in WT-HFHS but not KO-HFHS hearts. Nox1 mRNA was solidly expressed in CD45(+) immune cells isolated from healthy mouse hearts but was negligible in cardiac CD31(+) endothelial cells. However, in vitro, Nox1 expression increased in response to lipopolysaccharide (LPS) in endothelial cells and contributed to LPS-induced upregulation of Icam-1. Nox1 was also upregulated in mouse bone marrow-derived macrophages in response to LPS. In peripheral monocytes from age- and sex-matched symptomatic patients with and without DD, NOX1 was significantly higher in patients with DD compared to those without DD. Conclusions NOX1 mediates endothelial activation and contributes to myocardial inflammation and remodelling in metabolic disease in mice. Given its high expression in monocytes of humans with DD, NOX1 may represent a potential target to mitigate heart disease associated with DD.
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