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【期刊论文】Fibrosis of corpus cavernosum in animals following cavernous nerve ablation
胡礼泉, Wan-Li Hu, Li-Quan Hu, Jian Song, Shi-Wen Li, Xin-Min Zheng, Bei Cheng, Bing-Chun Tian
Asian J Androl 2004 Jun; 6:111-116,-0001,():
-1年11月30日
Aim: To investigate alterations of smooth muscle cells and collagen fibers in corpus cavernosum following cavernous neurectomy and its relation to the expression of transforming growth factor-β1 (TGF-β1). Methods: Ten adult male SD rats (neurectomy group) were subject to a bilateral cavernous nerve (CN) resection aseptically under an operating microscope, with 6 sham-operated rats as the control. Fifteen weeks after the operation, the penile specimens were collected and prepared for quantitative-analyzing of ratio of smooth muscle to collagen fibers in corpus cavernosum with confocal microscopy, and for detecting the expression of TGF-β1 by RT-PCR and western-blot. Results: Smooth muscle cells that show red color after fluorescent-labeling with tetramethylrhodamine isothiocyanate-phalloidin and collagen fibers that produce green autofluorescence after paraformaldehyde fixation were clearly identified under the confocal microscope. Quantification of fluorescent intensity showed that the ratio of smooth muscle to collagen fibers in corpus cavernosum in neurectomy group was 0.265±0.125, which was significantly lower than that in sham-operated group (0.760±0.196, P<0.01). RT-PCR and western-blot analyses revealed a significantly higher expression of TGF-β1 in the penile tissues of the neurectomy animals than that in sham-operated group. Conclusion: Bilateral ablation of CN can lead to fibrosis of corpus cavernosum, which may be related to an increased expression of TGF-β1 induced by hypoxia in cavernous tissue after denervation.
cavernous nerve, transforming growth factor-b1, penis, fibrosis, collagen fiber, smooth muscle
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【期刊论文】胃液对膀胱癌细胞系生长抑制、细胞凋亡及bel-2/bax表达的影响
胡礼泉, 田斌群, 郑新民, 李世文, 王家治, 张国辉
中华实验外科杂志,2001,18(3):238~239,-0001,():
-1年11月30日
目的 探讨胃液对膀胱癌生长抑制、细胞凋亡及bcl-2/bax表达的影响。方法 采用细胞培养、四唑盐比色试验(MTT)、DNA提取及电泳、流式细胞仪和免疫组织化学等方法,观察胃液对膀胱癌细胞系生长抑制、细胞凋亡及bd-2/bax表达的影响。结果 高浓度胃液(19~38mmol/L)抑制膀胱癌细胞系的生长繁殖,低浓度胃液(0.594~9.500mmol/L)则促进膀胱癌细胞系的生长繁殖。胃液能诱导体外培养的膀胱癌细胞凋亡。膀胱癌细胞系BIU-87中bcl-2、bax均有表达(分别为63.5%和41.4%),经胃液、稀盐酸或阿霉素处理后,bdl-2表达下降(分别为34.8%、37.3%和29.6%),bax表达上升(分别为49.3%、47.1%和52.2%),bd-2/bax比值小于1。结论 胃液能抑制膀胱癌的生长,诱导其凋亡。
下尿路症状, IPSS问卷, 流行病学
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