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Ge Y, Hu D, Xi Y, Wang H, Xia T, Chen J, Pu X, Xiao H. An animal model induced by bilateral cavernous nerve crushing mimics post-radical prostatectomy erectile dysfunction in old rats. Life Sci 2023; 325:121767. [PMID: 37172816 DOI: 10.1016/j.lfs.2023.121767] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 04/24/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023]
Abstract
AIM Over the years, the cavernous nerve (CN) crushing injury rat model has been frequently used for studying post-radical prostatectomy erectile dysfunction (pRP-ED). However, models based on young and healthy rats reportedly exhibit spontaneous recovery of erectile function. Our investigation purpose was to evaluate bilateral CN crushing (BCNC) effects on erectile function besides penile corpus cavernosum pathology in young and old rats and verify whether the BCNC modeling in old rats is more suitable to mimic pRP-ED. MATERIALS AND METHODS Thirty young and old male Sprague-Dawley (SD) rats had been divided into three groups in a random manner: sham-operated group (Sham), CN-injured 2-week group (BCNC-2W), and CN-injured 8-week group (BCNC-8W). At 2 and 8 weeks postoperatively, mean arterial pressure (MAP) along with intracavernosal pressure (ICP) had been determined, respectively. Then, the penis was harvested for histopathological studies. KEY FINDING We found that young rats exhibited erectile function spontaneous recovery 8 weeks following BCNC, while old ones failed to recover erectile function. After BCNC, the abundance of nNOS-positive nerve and smooth muscle were reduced, whereas apoptotic levels and collagen I content increased. These pathological modifications gradually resumed over time in young rats, unlike in old rats. SIGNIFICANCE Our findings demonstrate that 18-month-old rats do not spontaneously regain erectile function at 8 weeks after BCNC. Therefore, CN-injury ED modeling in 18-month-old rats may be more suitable for studying pRP-ED.
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Affiliation(s)
- Yunlong Ge
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Daoyuan Hu
- Department of Urology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yuhang Xi
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Hua Wang
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Tian Xia
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jialiang Chen
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiaoyong Pu
- Department of Urology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China; The Second School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong, China.
| | - Hengjun Xiao
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China.
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Yin Y, Zhou Y, Zhou J, Zhao L, Hu H, Xiao M, Niu B, Peng J, Dai Y, Tang Y. Cisplatin causes erectile dysfunction by decreasing endothelial and smooth muscle content and inducing cavernosal nerve senescence in rats. Front Endocrinol (Lausanne) 2023; 14:1096723. [PMID: 36761198 PMCID: PMC9905444 DOI: 10.3389/fendo.2023.1096723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 01/10/2023] [Indexed: 01/26/2023] Open
Abstract
INTRODUCTION Cisplatin (cis-diamminedichloroplatinum II, CDDP), a drug widely used for cancer worldwide, may affect erectile function, but its side effects have not received enough attention. To investigate the effect of CDDP on erectile function and its possible mechanism. METHODS Sprague-Dawley rats were intraperitoneally administered CDDP (CDDP group) or the same volume of normal saline (control group). Erectile function was evaluated after a one-week washout. Then, histologic changes in the corpus cavernosum and cavernous nerve (CN) were measured. Other Sprague-Dawley rats were used to isolate the major pelvic ganglion and cavernous nerve (MPG/CN). RSC96 cells were then treated with CDDP. SA-β-gal staining was used to identify senescent cells, and qPCR was used to detect the senescence-associated secretory phenotype (SASP). Finally, the supernatant of RSC96 cells was used to culture MPG/CN. Erectile function was measured after administration of CDDP. The cavernosum levels of α-SMA, CD31, eNOS, and γ-H2AX, the apoptosis rate and the expression of p16, p21 and p53 in CN were also assayed. The senescent phenotype of RSC96 cells treated with CDDP was identified, and neurite growth from the MPG/CN was photographed and measured. RESULTS The CDDP group had a significantly lower ICP/MAP ratio than the control group. Compared to the control group, the CDDP group exhibited significantly lower α-SMA, CD31 and eNOS levels and significantly higher γ-H2AX and apoptosis rates in corpus cavernosum. In addition, CDDP increased some senescence markers p16, p21 and p53 in CN. In vitro, CDDP induced RSC96 senescence and SASP, and the supernatant of senescent cells slowed neurite outgrowth of MPG/CN. DISCUSSIONS CDDP treatment could induce erectile dysfunction, by affecting the content of endothelial and smooth muscle and causing SASP in CN. The results indicate that CDDP treatment should be considered as a risk factor for ED. Clinicians should pay more attention to the erectile function of cancer patients who receive CDDP treatment.
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Affiliation(s)
- Yinghao Yin
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Yihong Zhou
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Jun Zhou
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Liangyu Zhao
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Hongji Hu
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Ming Xiao
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Bin Niu
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Jingxuan Peng
- Department of Urology, First Affiliated Hospital of Jishou University, Jishou, Hunan, China
| | - Yingbo Dai
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- *Correspondence: Yingbo Dai, ; Yuxin Tang,
| | - Yuxin Tang
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
- *Correspondence: Yingbo Dai, ; Yuxin Tang,
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Gu SJ, Li M, Yuan YM, Xin ZC, Guan RL. A novel flavonoid derivative of icariside II improves erectile dysfunction in a rat model of cavernous nerve injury. Andrology 2021; 9:1893-1901. [PMID: 34106520 DOI: 10.1111/andr.13065] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/27/2021] [Accepted: 06/03/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Icariside II (ICA II), an active flavonoid monomer, has been proven to restore post-prostatectomy erectile dysfunction in rats; however, the high cost of extraction from natural plants limits the application of ICA II. OBJECTIVE To investigate the therapeutic effect and possible mechanism of action of YS-10, a new flavonoid compound, which was designed and synthesized based on the structure of ICA II in a rat model in of cavernous nerve injury. MATERIALS/METHODS Eight of 32 adult male Sprague-Dawley rats were selected as the normal control (NC) group and received vehicle treatment. The remaining rats were subjected to bilateral cavernous nerve injury (BCNI) and randomized into three groups: BCNI group, BCNI + ICA II group (2.5 mg/kg/day), and BCNI + YS-10 group (2.5 mg/kg/day). The total procedure lasted for 21 days, followed by a washout period of 3 days. All animals were evaluated for erectile function, and tissues were harvested for histopathological analyses. RESULTS It was observed that in YS-10 group, the ratio of intracavernous pressure (ICP) to mean arterial pressure (MAP) and the area under the ICP/MAP curve were effectively enhanced. The maximum ICP/MAP increased by 30% in the YS-10 group (0.86 ± 0.085) compared with the BCNI group (0.66 ± 0.058), which is close to 82% of the NC group (1.05 ± 0.033). Histopathological changes demonstrated significant reduction of smooth muscle atrophy, collagen deposition, and endothelial and neural dysfunction after YS-10 treatment, which have no statistical differences compared with ICA II group. Additionally, high-protein expression levels of β-Catenin and cyclin D1 were observed in the treatment groups. CONCLUSION YS-10, a novel synthesized flavonoid compound, could effectively improve erectile dysfunction in rats after BCNI by alleviating pathological impairments; this effect may associate with the upregulation of β-Catenin and cyclin D1 in Wnt signaling pathway.
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Affiliation(s)
- Sheng-Ji Gu
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Meng Li
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Yi-Ming Yuan
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Zhong-Cheng Xin
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China.,Male Reproductive and Sexual Medicine, Department of Urology, The Second Hospital, Tianjin Medical University, Tianjin, China
| | - Rui-Li Guan
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
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Ye M, Zhao F, Ma K, Zhou K, Ma J, Fu H, Xu Z, Huang W, Wang W, Zhao J, Lv B. Enhanced effects of salidroside on erectile function and corpora cavernosa autophagy in a cavernous nerve injury rat model. Andrologia 2021; 53:e14044. [PMID: 33709426 DOI: 10.1111/and.14044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/10/2021] [Accepted: 02/21/2021] [Indexed: 12/31/2022] Open
Abstract
We explored the efficacy and mechanisms of salidroside treatment for erectile dysfunction induced by bilateral cavernous nerve injury (BCNI). Forty male rats were divided into four groups as follows: sham (cavernous nerves exposed only) (S); BCNI (M); BCNI + rapamycin (M + rapamycin); and BCNI + salidroside (M + salidroside). Erectile function in the rats was measured by intracavernosal pressure. Penile tissue was harvested for transmission electron microscopy, immunohistochemistry, immunofluorescence, Masson's trichrome staining, haematoxylin-eosin staining, TdT-mediated dUTP Nick End Labeling and western blotting. The M group exhibited a decrease in erectile responses and increased apoptosis and fibrosis compared to these in the S group. Meanwhile, nerve content and the penile atrophy index were also decreased in the M group. Treatment with salidroside and rapamycin for 3 weeks partially restored erectile function and significantly attenuated corporal apoptosis, fibrosis, nerve content and penile atrophy in the M group. Moreover, the autophagy level was further enhanced in the M + salidroside group, which was the same as that in the positive observation group (M + rapamycin). Salidroside treatment not only improved erectile function in rats with BCNI, but also inhibited apoptosis and fibrosis and ameliorated the loss of nerve content and endothelial and corpus cavernosum smooth muscle cells by promoting protective autophagy.
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Affiliation(s)
- Miaoyong Ye
- Department of Urology, The First People's Hospital of Wenling, The Affiliated Wenling Hospital of Wenzhou Medical University, Wenling, China.,The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fan Zhao
- Department of Urology and Andrology, Affiliated Hospital of Nantong University, Nantong, China
| | - Ke Ma
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kang Zhou
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianxiong Ma
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Huiying Fu
- Research Institute of Urology and Andrology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zengbao Xu
- Department of Urology, Huzhou Hospital of Traditional Chinese Medicine, Huzhou, China
| | - Wenjie Huang
- Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Wenzhi Wang
- Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianfeng Zhao
- Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Bodong Lv
- Research Institute of Urology and Andrology, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.,Key Laboratory of Integrative Chinese and Western Medicine for Prevention and Treatment of Sexual Dysfunction of Zhejiang Province, Hangzhou, China
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