摘要
目的 探讨利用生殖股神经移植加神经生长强化介质修复损伤的阴茎海绵体神经,重建勃起神经通道的可行性。 方法 3月龄SD雄性大鼠54只,随机平均分成假手术对照组、双侧阴茎海绵体神经损伤组及神经移植加胰岛素样神经生长因子Ⅰ(IGF Ⅰ)组。术后1、3、6个月用阿朴吗啡试验评估各组动物勃起功能,并取阴茎干组织,采用NADPH d组化法了解nNOS阳性神经纤维的再生情况。 结果 术后1、3、6个月,假手术对照组均有正常阴茎勃起(勃起率100% ),神经切断组完全丧失勃起功能(勃起率0% );术后1个月神经移植组也丧失勃起功能(勃起率0% ),术后3、6个月勃起功能渐恢复(勃起率分别为50%和66. 7% ),两两比较差异有统计学意义(P<0. 05)。术后3、6个月,神经移植组nNOS 阳性神经纤维数显著增多,神经部分切断组的nNOS阳性神经纤维数和术后1个月相比无增多,两两比较差异有统计学意义(P<0. 002)。 结论 双侧阴茎海绵体神经损伤后,利用生殖股神经移植加IGF促进神经再生,是重建勃起神经通路,恢复大鼠勃起功能的一种有效方法。
ObjectiveTo investigate the feasibility of repairing surgically ablated cavernous nerves by using an interposition genitofemoral nerve graft and with nerve growth enhancing media (insulin-like growth factor-I,IGF-I) injection.MethodsA total of 54 male adult Sprague-Dawley rats were randomly divided into 3 groups (each of 18 rats),including sham operation controls, bilateral cavernous nerve ablation and nerve graft with IGF-I injection groups.At 1,3 and 6 months after surgery, the rat models were evaluated with Apomorphine Test.Then nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) staining was used to identify nNOS in penile nerve fibers of the proximal portion of penile shaft.ResultsAt 1,3 and 6 months after surgery, the rats of sham operation group had normal erectile function (erection rate,100%),while the rats of nerve ablation group lost erectile function at all (erection rate,0%).There was no statistically significant difference of ED between the nerve ablation and nerve graft groups at 1 month;however,at 3 and 6 months,Apomorphine Test resulted in tumescence of 50% and 66.7% of the nerve graft groups vs 0% and 0% of the nerve ablation groups, respectively ( P <0.05).Furthermore, the number of NOS-containing nerve fibers in the nerve graft group showed a significant increase at 3 months and 6 months postoperatively, while that of the nerve ablation group had no increase ( P <0.002).ConclusionsIn the ED model caused by bilateral cavernous nerve injury, immediately nerve graft repair technique with the addition of nerve growth enhancing media injection appears to be a successful method of salvaging erectile function in rats.
出处
《中华泌尿外科杂志》
CAS
CSCD
北大核心
2005年第5期347-349,共3页
Chinese Journal of Urology
基金
国家自然科学基金资助项目(30170939)
