Expression of endothelins and endothelin receptors in retina of diabetic rats
10.3724/SP.J.1008.2012.00436
- Author:
Ai-Hua YUAN
1
Author Information
1. Department of Genetics, Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine
- Publication Type:Journal Article
- Keywords:
Diabetic retinopathy;
Endothelin;
Endothelin converting enzyme;
Endothelin receptor
- From:
Academic Journal of Second Military Medical University
2012;33(4):436-440
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the expression of endothelin-1 (ET-1), ET-2, ET-3, endothelin receptor A (ETRA), ETRB and endothelin coverting enzyme (ECE) in the retinas of 8-week-old diabetic SD rats. Methods The retinal gene expression profiles of healthy and 8-week-old diabetic rats were constructed with restriction fragment differential display polymerase chained reaction (RFDD-PCR), and the differential expression of ET-1, ET-2, ET-3, ETRA, ETRB and ECE was verified using semi-quantitative RT-PCR and Western blotting analysis. Results The results of RFDD-PCR showed that the expression of ET-1, ET-2, ET-3, ETRA, ETRB and ECE was up-regulated in diabetic retina. The results of semi-quantitative RT-PCR and Western blotting analysis showed that the expression levels of the six genes and proteins (relative D ratio) in diabetic group were significantly higher than those in the normal retinas (P<0. 05 and P<0. 01, respectively). Conclusion The expression of ET-1, ET-2, ET-3, ETRA, ETRB and ECE is up-regulated in diabetic retina, suggesting that the six genes may be involved in the pathgenesis of diabetic retina.
