Elevated expression of periostin in diabetic cardiomyopathy and the effect of valsartan

• Published in: BMC cardiovascular disorders 2015-08, Vol.15 (1), p.90-90, Article 90
• Main Authors: Guan, Jun, Liu, Wen-Qi, Xing, Ming-Qing, Shi, Yue, Tan, Xue-Ying, Jiang, Chang-Qing, Dai, Hong-Yan
• Format: Article
• Language: English
• Subjects: Analysis; Angiotensin II Type 1 Receptor Blockers - therapeutic use; Animals; Bone morphogenetic proteins; Cell Adhesion Molecules - biosynthesis; Diabetes Mellitus, Experimental - drug therapy; Diabetes Mellitus, Experimental - metabolism; Diabetic Cardiomyopathies - drug therapy; Diabetic Cardiomyopathies - metabolism; Gene Expression Regulation; Male; Rats; Rats, Wistar; Treatment Outcome; Valsartan - therapeutic use
• ISSN: 1471-2261; 1471-2261
• DOI: 10.1186/s12872-015-0084-3

Periostin, an extracellular matrix protein, plays a significant role in adverse cardiac remodeling. However, no report has documented the function of periostin in left ventricular remodeling of streptozototin (STZ)-induced diabetic rats. The aim of the present study was to observe the expression of periostin in Wistar rat's myocardium of diabetic cardiomyopathy (DCM) and the effect of valsartan on it. Immunohistochemistry, real-time polymerase chain reaction, and Western blot analysis were used to determine the degree of expression and location of periostin, transforming growth factor (TGF)-β1, TGF-β1 type II receptor (TGF-β1 R II), and Type I and III collagens in the myocardium of STZ-induced diabetic rats. Periostin, TGF-β1, TGF-β1 R II, and Type I and III collagens were significantly increased in the myocardium of diabetic rats compared with control group on both messenger ribonucleic acid and protein levels. In addition, diabetic rats treated with valsartan could have reduced expression of periostin and improved cardiac remodeling of DCM. Periostin may play a crucial role in cardiac remodeling and myocardial interstitial fibrosis process of DCM and it could be one of the important mechanisms for valsartan to improve the ventricular remodeling of DCM.