Jiang-Rong Wang1, Meng-Zan Wang2, Shao-Hua Zheng3, Zhi-Yuan Li1. 1. Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China. 2. Department of Cardiology, People's Hospital of Liaocheng, Liaocheng, Shandong 252000, China. 3. Department of Cardiology, People's Hospital of Dongying, Dongying, Shandong 25700, China.
Abstract
OBJECTIVE: This study aims to investigate the effect of rosuvastatin on sympathetic neural remodeling of the left atrium (LA) in rats after myocardial infarction (MI). METHODS: Rats were randomly divided into a three groups: sham group, statin group, and MI group. The mRNA expression levels of the growth-associated protein-43 (GAP43) and nerve growth factor (NGF) were measured by RT-PCR. Immunohistochemistry was used to detect the distribution and density of GAP43- and NGF-positive nerves. The expression levels of these proteins were quantified by Western blot. RESULTS: Compared with the sham group, the average optical density (AOD) values of GAP43 and nerve growth factor (NGF)-positive substances in the LA in the statin and MI groups were significantly higher (P<0.01), but the AOD values in the statin group were lower than of those in the MI group (P<0.01). Furthermore, the AOD values of GAP43 and NGF positive nerves in the left stellate ganglion in the statin and MI groups were significantly higher (P<0.01), but the AOD values in the statin group were lower, when compared with the MI group (P<0.01). CONCLUSION: Rosuvastatin could effectively improve the sympathetic neural remodeling of LA in MI rats.
OBJECTIVE: This study aims to investigate the effect of rosuvastatin on sympathetic neural remodeling of the left atrium (LA) in rats after myocardial infarction (MI). METHODS: Rats were randomly divided into a three groups: sham group, statin group, and MI group. The mRNA expression levels of the growth-associated protein-43 (GAP43) and nerve growth factor (NGF) were measured by RT-PCR. Immunohistochemistry was used to detect the distribution and density of GAP43- and NGF-positive nerves. The expression levels of these proteins were quantified by Western blot. RESULTS: Compared with the sham group, the average optical density (AOD) values of GAP43 and nerve growth factor (NGF)-positive substances in the LA in the statin and MI groups were significantly higher (P<0.01), but the AOD values in the statin group were lower than of those in the MI group (P<0.01). Furthermore, the AOD values of GAP43 and NGF positive nerves in the left stellate ganglion in the statin and MI groups were significantly higher (P<0.01), but the AOD values in the statin group were lower, when compared with the MI group (P<0.01). CONCLUSION: Rosuvastatin could effectively improve the sympathetic neural remodeling of LA in MI rats.
Authors: J M Cao; L S Chen; B H KenKnight; T Ohara; M H Lee; J Tsai; W W Lai; H S Karagueuzian; P L Wolf; M C Fishbein; P S Chen Journal: Circ Res Date: 2000-04-14 Impact factor: 17.367