期刊
PLOS ONE
卷 10, 期 3, 页码 -出版社
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0120711
关键词
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资金
- National Research Foundation of Korea (NRF) grant - Ministry of Education, Science and Technology (MEST) of the Korean Government [2010-0005071, 2012R1A1A2044121]
- National Research Foundation of Korea [2010-0005071, 2012R1A1A2044121] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Hepatic steatosis is the accumulation of excess fat in the liver. Recently, hepatic steatosis has become more important because it occurs in the patients with obesity, type 2 diabetes, and hyperlipidemia and is associated with endoplasmic reticulum (ER) stress and insulin resistance. C-C chemokine receptor 2 (CCR2) inhibitor has been reported to improve inflammation and glucose intolerance in diabetes, but its mechanisms remained unknown in hepatic steatosis. We examined whether CCR2 inhibitor improves ER stress-induced hepatic steatosis in type 2 diabetic mice. In this study, db/db and db/m (n = 9) mice were fed CCR2 inhibitor (2 mg/kg/day) for 9 weeks. In diabetic mice, CCR2 inhibitor decreased plasma and hepatic triglycerides levels and improved insulin sensitivity. Moreover, CCR2 inhibitor treatment decreased ER stress markers (e.g., BiP, ATF4, CHOP, and XBP-1) and inflammatory cytokines (e.g., TNF alpha, IL-6, and MCP-1) while increasing markers of mitochondrial biogenesis (e.g., PGC-1 alpha, Tfam, and COX1) in the liver. We suggest that CCR2 inhibitor may ameliorate hepatic steatosis by reducing ER stress and inflammation in type 2 diabetes mellitus.
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