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pancreatic kininogenase improves erectile function in streptozotocin-induced type 2 diabetic rats with erectile dysfunction

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Asian Journal of Andrology 2018年第5期20卷 448-453页

作者： Guo-Tao Chen Bai-Bing Yang Jian-Huai Chen Zheng Zhang Lei-Lei Zhu He-Song Jiang Wen Yu Yun Chen Yu-Tian Dai Department of Andrology Nanjing Drum Tower Hospital Affiliated Hospital of Nanjing University Medical School Nanjing 210008 China.

Erectile dysfunction （ED） associated with type 2 diabetes is a severe problem that requires effective treatment. pancreatic kininogenase （PK） has the potential to improve the erectile function of ED patients. This study aims to investigate the effect of PK on erectile function in streptozotocin-induced type 2 diabetic ED rats. To achieve this goal, we divided male Sprague-Dawley rats into five groups. One group was not treated, and the other four groups were treated with saline, sildenafil, PK or sildenafil, and PK, respectively, for 4 weeks after the induction of type 2 diabetic ED. Then, intracavernous pressure under cavernous nerve stimulation was measured, and penile tissue was collected for further study. Endothelial nitric oxide synthase levels, smooth muscle content, endothelium content, cyclic guanosine monophosphate （cGMP） levels in the corpus cavernosum, and neuronal nitric oxide synthase levels in the dorsal penile nerve were measured. Improved erectile function and endothelium and smooth muscle content in the corpus cavernosum were observed in diabetic ED rats. When treating diabetic ED rats with PK and sildenafil at the same time, a better therapeutic effect was achieved. These data demonstrate that intraperitoneal injection of PK can improve erectile function in a rat model of type 2 diabetic ED. With further research on specific mechanisms of erectile function improvement, PK may become a novel treatment for diabetic ED.

关键词： cyclic guanosine monophosphate endothelial nitric oxide synthase erectile dysfunction intracavernous pressure pancreatic kininogenase type 2 diabetes

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