Journal Article

Rev-erb agonist improves adverse cardiac remodeling and survival in myocardial infarction through an anti-inflammatory mechanism

Murakoshi Nobuyuki, Feng Duo, Aonuma Kazutaka, Yonebayashi Saori, 田尻 和子, 佐藤 明, 青沼 和隆, Kimura Taizo, Sato Akira, 村越 伸行, 野上 昭彦, Stujanna Endin Nokik, Ogura Yukino, Tajiri Kazuko, Xu DongZhu, Qin Rujie, Yamagami Fumi, Nogami Akihiko

2017

Overview

Rev-erb α, known as nuclear receptor 1D1 (NR1D1), regulates circadian rhythm, modulates glucose and lipid metabolism, and inflammatory response. However, little is known about the effect of Rev-erb agonist on the progression of myocardial infarction (MI) and heart failure. To investigate it, wild-type male mice underwent sham-operation or permanent ligation of the left anterior descending coronary artery to create MI model. Rev-erb agonist SR9009 (100 mg/kg/day) or vehicle was intraperitoneally administered. Echocardiography was performed to evaluate cardiac function 1 week after surgery. The gene and protein expression levels in the left ventricles (LVs) were determined with real-time PCR, western blotting, and immunofluorescence. Moreover, immune cell infiltration into the LVs was analyzed by flow cytometry. Survival rate and reduced LV function were significantly improved by the treatment with SR9009 after MI. The expression level and plasma concentration of brain natriuretic peptide were significantly lower in MI mice treated with SR9009 (MI+SR) than in MI mice treated with vehicle (MI+V). Moreover, the mRNA expression levels of inflammatory-related molecules such as Il6, Mcp1, Ly6g, Cd11b, matrix metallopeptidase (Mmp)9, and the protein expression levels of phosphorylated NF-κB p65, phosphorylated ERK, and phosphorylated p38 were also significantly lower in MI+SR than in MI+V. Immunofluorescence intensity for MMP-9 was enhanced in the LVs, but was less so in MI+SR than in MI+V. Furthermore, infiltrations of neutrophils and proinflammatory macrophages in the LVs were dramatically increased in MI+V and were significantly suppressed in MI+SR. Rev-erb agonist SR9009 treatment inhibited post-MI mortality and improved cardiac function through modulating inflammation and remodeling process.

• Publisher: Public Library of Science,Public Library of Science (PLoS)
• Subject: Animals / Biology and Life Sciences / Blotting, Western / Brain / Brain natriuretic peptide / Cardiology / Care and treatment / CD11b antigen / Cell survival / Circadian rhythm / Circadian rhythms / Coronary artery / Coronary vessels / Cytokines / Cytometry / Diagnosis / Dosage and administration / Echocardiography / Experiments / Flow cytometry / Fluorescent Antibody Technique / Gelatinase B / Gene expression / Glucose metabolism / Heart / Heart attack / Heart attacks / Heart diseases / Heart failure / Immune system / Immunofluorescence / Infiltration / Inflammation / Inflammation - prevention & control / Inflammatory response / Interleukin 6 / Laboratory animals / Leukocytes (neutrophilic) / Lipid metabolism / Lipids / Macrophages / Male / Matrix metalloproteinase inhibitors / Matrix metalloproteinases / Medical research / Medicine / Medicine and Health Sciences / Metabolism / Metalloproteinase / Mice / Mice, Inbred C57BL / Musculoskeletal system / Myocardial infarction / NF-κB protein / Nuclear Receptor Subfamily 1, Group D, Member 1 - agonists / Nuclear Receptor Subfamily 1, Group D, Member 1 - genetics / Nuclear Receptor Subfamily 1, Group D, Member 1 - metabolism / Ostomy / Proteins / Pyrrolidines - pharmacology / Real time / Real-Time Polymerase Chain Reaction / Research and Analysis Methods / RNA, Messenger - genetics / Surgery / Survival / Survival Rate / Thiophenes - pharmacology / Ventricular Remodeling - drug effects / Western blotting