| ORIGINAL ARTICLE |
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| Year : 2018 | Volume
: 35
| Issue : 3 | Page : 378-385 |
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Protective effect of captopril on cardiac fibrosis in diabetic albino rats: a histological and immunohistochemical study
Hamdino M Attia1, Medhat Taha2
1 Department of Anatomy, Faculty of Medicine, Al-Azhar University, Damietta, Egypt
2 Department of Anatomy, College of Medicine, Mansoura, Egypt
Correspondence Address:
Dr. Hamdino M Attia
Department of Anatomy, Faculty of Medicine, Al-Azhar University, Damietta (34518)
Egypt
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/bmfj.bmfj_122_18
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Background Cardiomyopathy is one of the common complications of diabetes mellitus.
Aim The aim of the present study was to investigate the effects of Captopril on myocardial fibrosis in streptozotocin-induced diabetic rats (an animal model of type 1 diabetes mellitus).
Materials and methods Forty albino rats were divided into five groups. Group I (control group), group II (untreated diabetic rats), group III (insulin-treated diabetic rats), group IV (Captopril-treated diabetic rats), and group V (insulin and Captopril-treated diabetic rats) were killed at 4 and 8 weeks, and the samples were collected for histological evaluation using hematoxylin and eosin, Masson trichrome, and immunohistochemical staining with anti-P53 for apoptosis, alpha smooth muscle actin (α-SMA) for collagen deposition.
Results Treatment of streptozotocin-induced diabetic rats with insulin and Captopril (group V) showed marked decrease in myocardial injury and apoptosis, which was confirmed by marked decrease of sarcoplasmic p53 expression. Group V also showed decreased collagen deposition as confirmed by Masson trichrome staining and α-SMA expression. The results were better after 8 weeks compared with those after 4 weeks.
Conclusion The administration of Captopril alone with diabetic rats minimally affected cardiac fibrosis, while the combination of Captopril and insulin markedly improved cardiac fibrosis.
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