共查询到20条相似文献，搜索用时 125 毫秒
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转化生长因子β1、结蛋白及CD34在大鼠阴茎海绵体组织中的表达 总被引：1，自引：0，他引：1
目的:检测转化生长因子β1(TGF-β1)、结蛋白(Desmin)及CD34在不同月龄组SD大鼠阴茎海绵体组织中的表达情况。方法:随机选取2、5、20月龄不同窝别SD大鼠各10只分别作为幼龄组、壮龄组和老龄组,乙醚麻醉下取阴茎海绵体组织,分别用RT-PCR和免疫组化检测TGF-β1、Desmin及CD34mRNA及蛋白的表达。结果:RT-PCR结果显示,阴茎海绵体组织中有TGF-β1、Desmin及CD34mRNA的表达,且3者表达量于组间两两比较均有统计学差异(P<0.01)。TGF-β1蛋白主要表达于海绵体小梁及动脉血管周围,胞膜、胞质染色;Desmin蛋白为肌性组织染色,以胞膜、胞质为主;CD34蛋白表达以血管及海绵窦内皮为主。TGF-β1mRNA的表达与月龄呈明显正相关(r=0.944,P<0.01),Desmin及CD34mRNA的表达与月龄呈明显负相关(r=-0.947,P<0.01;r=-0.934,P<0.01),且Desmin、CD34mRNA的表达均与TGF-β1mRNA的表达有明显的相关性(r=-0.888,P<0.01;r=-0.887,P<0.01)。结论:随着月龄的增长,阴茎海绵体组织中TGF-β1的表达明显增加,Desmin、CD34的表达明显减少;TGF-β1的表达与Desmin、CD34的表达均呈显著负相关;TGF-β1是ED的重要影响因子。 相似文献
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Aim: To investigate alterations of smooth muscle celis 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 speci mens 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. Resulte: Smooth muscle celis that show red color after fluorescent-labeling with tetramethylrhodamine isothiocyanate phalloidin and collagen fibers that produce green autofluorescence after paraformaldehyde fixation were clearly iden tified 相似文献
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Keyi Wang Weipu Mao Jinliang Ni Jinbo Xie Lei Yin Houliang Zhang Tao Zhang Tianyuan Xu Bo Peng 《Andrologia》2021,53(8):e14113
The present study aimed to investigate the mechanism of penile damages in experimental autoimmune prostatitis (EAP) rat models to reveal the potential pathological mechanism of the relationship between CP and penile damages. Sprague–Dawley (SD) rats were administered with different concentrations of prostate tissue homogenate supernatant (PTHS) by multipoint subcutaneous injection to establish EAP models. IHC staining was done to assess the expression of inflammatory cytokines in prostate tissues and the corpus cavernosum of penis. Masson and Tunel staining was conducted to observe the fibrosis and apoptosis in the corpus cavernosum. Finally, the functional changes of corpus cavernosum were assessed by WB and IHC staining. The results revealed that EAP rats with different prostatitis severity were successfully established by PTHS. The expression of IL-1β, IL-6 and TNF-α in prostate tissues increased with the concentration of PTHS. The results of Masson and Tunel staining indicated fibrosis and apoptosis gradually aggravated in corpus cavernosum among different subgroups. The function of cavernosum impaired by prostatitis from WB and IHC results and positively with the severity. In conclusion, there existed the infiltration of inflammatory factors and impaired function in the corpus cavernosum of EAP rats’ penis and positively correlated with the severity of prostatitis. 相似文献
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OBJECTIVE
To investigate the feasibility of applying neural crest stem cells (NCSCs), with multipotent capacity, to repair injury in the penile cavernosum, the HNC10.K10 (K10) immortalized NCSC line was transplanted into the penile cavernosum of adult rats, as one of the causes of erectile dysfunction is damaged penile cavernous smooth muscle cells and sinus endothelial cells.MATERIALS AND METHODS
The K10 human NCSC line was generated via transfection of primary cultured NCSC with a retroviral vector encoding v‐myc. K10 NCSCs were transplanted into the cavernosum of adult rats. The expression of cell type‐specific markers for endothelial cells (CD31 and von Willebrand factor), and specific markers for smooth muscle cells (smooth muscle cell actin, calponin, and desmin) was determined immunohistochemically in the penile cavernosum of rats 2 weeks after transplantation.RESULTS
In the rat cavernosum, transplanted K10 NCSCs identified by human nuclear antigen labelling expressed cell type‐specific markers for endothelial cells (CD31 and von Willebrand factor), and specific markers for smooth muscle cells (smooth muscle cell actin, calponin, and desmin) 2 weeks after transplantation. Human NCSCs transplanted into the rat penile corpus cavernosum differentiated into endothelial cells or smooth muscle cells, as shown by their expression of cell type‐specific markers for the cell types.CONCLUSION
It appears that NCSCs are an ideal cell source for reconstructing endothelial and smooth muscle cells in the corpus cavernosum in cell therapy for patients with erectile dysfunction. 相似文献15.
目的:建立甲状腺功能亢进及甲状腺功能减退Wistar大鼠动物模型,检测其阴茎海绵体内NOS及内源性一氧化碳(CO)的含量,探讨甲状腺素对大鼠勃起功能的影响及内源性CO在阴茎海绵体勃起过程中的作用,进一步讨论甲状腺素对人类勃起功能的影响。方法:将50只3月龄雄性Wistar大鼠随机均分为甲亢组、甲亢治疗组、甲减组、甲减治疗组及正常对照组。用紫外分光光度计分别测定阴茎海绵体内NOS及CO的含量。结果:无论甲状腺素增多及减少都会使大鼠阴茎海绵体NOS含量降低(P<0.01),并且甲减组阴茎海绵体内NOS活性低于甲亢组(P<0.01)。无论甲状腺素增多还是减少都会使大鼠阴茎海绵体内CO含量降低(P<0.01),并且甲亢组阴茎海绵体内CO活性低于甲减组(P<0.01)。在对甲减组及甲亢组进行治疗后其CO及NOS的含量得到提高,与正常对照组无显著差异(P>0.05)。结论:甲状腺功能紊乱情况下阴茎海绵体中NOS和CO的浓度均减低;甲状腺功能紊乱被及时纠正后阴茎海绵体中CO及NOS的含量可恢复到正常水平。在相同条件下甲状腺功能低下对性功能的损害强于甲状腺功能亢进对勃起功能的损害。 相似文献
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目的:通过观察养精胶囊对老年大鼠阴茎海绵体中P-Erk1和P-Akt1表达的影响,探讨其可能的作用机制。方法:将40只24月龄老年雄性SD大鼠随机分为实验组和对照组,每组20只。用药前实验组和对照组各取10只用于eNOS表达测定。实验组(n=10)给予养精胶囊[0.5 g/(kg.d)]灌胃,对照组(n=10)给予等剂量的生理盐水灌胃。4周后,处死所有大鼠,留取大鼠阴茎海绵体组织,HE染色,采用RT-PCR和免疫组化方法检测eNOS、P-Erk1及P-Akt1在阴茎海绵体组织中的表达。结果:HE染色结果显示实验组老年大鼠阴茎海绵体组织血管较对照组明显充盈,管径明显增大。免疫组化结果显示,对照组大鼠阴茎海绵体组织中eNOS的表达干预前(19.35±1.50)和干预后(18.15±1.98)无显著性差异(P>0.05);实验组老年大鼠阴茎海绵体组织中eNOS的表达干预后(24.10±2.40)较干预前(18.80±2.04)显著增强(P<0.05);而干预后老年大鼠阴茎海绵体组织中eNOS的表达,实验组较对照组明显增强(P<0.05);大鼠阴茎海绵体组织中P-Erk1的表达,实验组明显低于对照组(实验组P-Erk1表达量为0.71±0.13,对照组P-Erk1的表达量为0.83±0.17,P<0.01)。而在同等内参GAPDH条件下,两组大鼠间P-Akt1的表达强度未见明显差异(实验组P-Akt1的表达量为0.58±0.17,对照组P-Akt1的表达量为0.48±0.13,P>0.05)。结论:P-Erk1和P-Akt1在老年大鼠阴茎海绵体组织中均有表达,养精胶囊能改善老年大鼠勃起功能,作用机制可能与阴茎海绵体中P-Erk1的低表达相关。 相似文献
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目的:了解磷酸化Erk1/2(P-Erk1/2)和磷酸化Akt1(P-Akt1)在自发性高血压大鼠(SHR)和正常血压大鼠阴茎海绵体中的表达及与勃起功能的关系。方法:健康成年雄性SPF级SHR与对照组WKY大鼠各8只,14周龄,体重250～300g。麻醉后颈动脉和海绵体内插管连续监测平均动脉压(MAP)和海绵体内压(ICP),利用电刺激海绵体神经,记录ICP/MAP比值变化;免疫组织化学及RT-PCR技术检测P-Erk1/2和P-Akt1在大鼠阴茎海绵体的表达。结果:3V和5V电刺激海绵体神经后SHR组ICP/MAP比值(0.26±0.06、0.28±0.04)均较WKY组(0.46±0.12、0.76±0.13)显著降低(P均<0.05),P-Erk1、P-Erk2mRNA和P-Erk1/2蛋白的相对表达量在SHR组(0.81±0.05、0.91±0.06、54.22±10.05)较WKY组(0.42±0.04、0.68±0.14、7.05±1.45)显著升高(P均<0.05);P-Akt1mRNA和P-Akt1蛋白的相对表达量在SHR组(0.90±0.05、11.17±2.21)与WKY组(0.92±0.06、10.91±1.86)无显著差异(P均>0.05)。结论:高血压性勃起功能障碍的发生与阴茎海绵体P-Erk1/2的过度表达有关,而与P-Akt1的表达水平无明显相关。 相似文献
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血红素氧合酶2在去势大鼠阴茎海绵体内的表达 总被引：2，自引：1，他引：1
目的:研究去势大鼠阴茎海绵体血红素氧合酶2(HO-2)和内皮型一氧化氮合酶(eNOS)的表达,探讨雄激素与HO-2、eNOS在ED中的作用及相关性。方法:10周龄雄性SD大鼠40只,分为4、8、12周组和正常对照组各10只,实验组采取手术切除双侧睾丸,对照组采取假手术。分别于术后4、8、12周测定大鼠血清睾酮(T)、阴茎海绵体内压(ICP)、平均颈动脉压(MAP),取阴茎标本,采用Western印迹分析阴茎海绵体HO-2含量,免疫组化分析HO-2和eNOS的表达。结果:去势各组血清T水平较正常对照组显著下降(P<0.05)。经3V、5V电压刺激后去势各组ICP/MAP值明显下降(P<0.05)。HO-2在正常和去势大鼠阴茎海绵体组织均有表达,去势4周组HO-2光密度分布曲线下面积(341.50±99.70)较正常组(876±443.36)和去势8周组(705.00±152.74)明显下降(P<0.05),去势8周与正常组之间无显著变化(P>0.05),去势12周没有检测到HO-2的表达。eNOS主要表达于阴茎海绵体血管内皮细胞,去势组eNOS(123.94±30.23)较正常组(421.21±125.12)差异有显著性(P<0.05)。T与eNOS和HO-2表达呈高度正相关(r=0.976、0.946,P均<0.05)。结论:雄激素可能通过影响大鼠阴茎海绵体HO-2、eNOS的表达参与阴茎勃起功能调控。 相似文献