Korean J Phys Anthropol.
2006 Sep;19(3):191-203.
The Effect of Myocardial Infarction on the Reproductive Function in Adult Male Rats
- Affiliations
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- 1Center for Healthcare Technology Development, Chonbuk National University, Korea. iskim@chonbuk.ac.kr
- 2College of Veterinary Medicine, Bio-Safety Research Institute, Chonbuk National University, Korea.
- 3School of Dentistry, Chonbuk National University, Korea.
- 4Department of Veterinary Medicine, Kangwon National University, Korea.
Abstract
- The present study was to investigate in more detail the changes of reproductive function in the male rat following myocardial infarction (MI). Ligation of the left coronary artery was performed in male Sprague-Dawley male rats at 60 days of age. Control rats were obtained sham-operated animals. MI rats were sacrificed at 1, 3, 5, 7, 14, and 30 day after ligation of left anterior descending coronary artery. Control rats were sacrificed on 30 day after thoracotomy. Myocardial infarct size was assessed by planimetry and perimetry. Testes of rats were fixed by whole body perfusion using a fixative containing 2.5% glutaraldehyde in cacodylate buffer, processed and embedded in Epon-araldite. Using 1 micro sections stained with methylene blue-azure II, qualitative and quantitative (stereological) morphological studies were performed. Testosterone levels in the incubation medium of luteinizing hormone-stimulated (100 ng/mL) testosterone secretion per testis in vitro, and in serum were determined by radioimmunoassay. Sperm production was measured by routine technique. Mean infarct size was 29.5~33.5% of the left ventricle after coronary occlusion in experimental groups. No changes were observed in testis volume, absolute volume of Leydig cell, Leydig cell size, and number of Leydig cell per testis in MI rats compared to sham-operated animals. Serum testosterone, LH-stimulated testicular testosterone production, and daily sperm production in MI rats were not significantly different (P>0.05) from sham-operated animals. These results demonstrate that under the experimental conditions employed here, experimental chronic myocardial infarction does not exert adverse effects on the reproductive function of male rats.
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