Abstract
This study was conducted to investigate the effects of aescin treatment in a rodent model treated with an experimentally induced varicocele. Experimental varicocele was induced by partial ligation of the left renal vein of rats. Aescin administration was performed daily for 4weeks after the varicocele induction. Seven weeks later, a contrast-enhanced ultrasound was performed of the rats' testis to assess testicular blood flow. The animals were sacrificed, and H&E staining was then used to evaluate testicular pathological changes and polymorphonuclear leucocytes density. Cauda epididymal sperm counts and motility were evaluated. Blood was collected for the measurement of follicle-stimulating hormone, luteinising hormone and testosterone. Contrast-enhanced ultrasound showed that there were significant decreases in testicular blood flow in the aescin-treated groups compared with those in control varicocele group. Testicular oedema was detected in those rats treated with a varicocele but without aescin, while no oedema was found in the experimental group. H&E staining showed dysfunctional spermatogenesis in both cohorts; however, polymorphonuclear leucocytes density was significantly reduced in aescin-treated groups. There was an increase in sperm counts of the aescin-treated groups. Our study demonstrated that aescin could exert therapeutical effects on reversal of testicular lesions in varicocele rats.
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