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Li B, Hu P, Liu K, Xu W, Wang J, Li Q, Chen B, Deng Y, Han C, Sun T, Liu X, Li M, Wang T, Liu J, Lin H, Rao K. MiRNA-100 ameliorates diabetes mellitus-induced erectile dysfunction by modulating autophagy, anti-inflammatory, and antifibrotic effects. Andrology 2024; 12:1280-1293. [PMID: 38227138 DOI: 10.1111/andr.13586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/12/2023] [Accepted: 12/12/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND Diabetes mellitus-induced erectile dysfunction (DMED) has become a common disease in adult men that can seriously reduce the quality of life of patients, and new therapies are urgently needed. miRNA-100 has many targets and can induce autophagy and reduce fibrosis by inhibiting the mTOR pathway and the TGF-β pathway. However, no research has been conducted with miR-100 in the field of DMED, and the specific mechanism of action is still unclear. OBJECTIVES To ascertain the effects of miR-100 on corpus cavernosum tissue of DMED rats and vascular endothelial cells in a high glucose environment and to elucidate the relevant mechanisms in autophagy, fibrosis and inflammation to find a new approach for the DMED therapy. METHODS Thirty rats were divided into three groups: the control group, the DMED group, and the DMED + miR-100 group. Using intraperitoneal injections of streptozotocin, all rats except the control group were modeled with diabetes mellitus, which was verified using the apomorphine (APO) test. For rats in the DMED + miR-100 group, rno-miR-100-5p agomir (50 nmol/kg, every 2 days, 6 times in total) was injected via the tail vein. After 13 weeks, the erectile function of each rat was assessed using cavernous manometry, and the corpus cavernosum tissue was harvested for subsequent experiments. For cellular experiments, human coronary microartery endothelial cells (HCMEC) were divided into four groups: the control group, the high-glucose (HG, 40 mM) group, the HG + mimic group, and the HG + inhibitor group. The cells were cultured for 6 days and collected for subsequent experiments 2 days after transfection. RESULTS Diabetic modeling impaired the erectile function in rats, and miR-100 reversed this effect. By measuring autophagy-related proteins such as mTOR/Raptor/Beclin1/p62/LC3B, we found that miR-100 could suppress the expression of mTOR and induce autophagy. The analysis of the eNOS/NO/cGMP axis function indicated that impaired endothelial function was improved by miR-100. By evaluating the TGF-β1/CTGF/Smad2/3 and NF-κB/TNF-α pathways, we found that miR-100 could lower the level of inflammation and fibrosis, which contributed to the improvement of the erectile function. Cellular experiments can be used as supporting evidence for these findings. CONCLUSION MiR-100 can improve the erectile function by inhibiting mTOR and thus inducing autophagy, improving the endothelial function through the eNOS/NO/cGMP axis, and exerting antifibrotic and anti-inflammatory effects, which may provide new ideas and directions for the treatment of DMED.
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Affiliation(s)
- Beining Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peng Hu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kang Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenchao Xu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiaxin Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qinyu Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bingliang Chen
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuxuan Deng
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chenglin Han
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Taotao Sun
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinqi Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mingchao Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jihong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huang Lin
- Department of Urology, Fujian Provincial Hospital, Fuzhou, China
- Department of Urology, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Ke Rao
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Margiana R, Pilehvar Y, Amalia FL, Lestari SW, Supardi S, I'tishom R. Mesenchymal stem cell secretome: A promising therapeutic strategy for erectile dysfunction? Asian J Urol 2024; 11:391-405. [PMID: 39139521 PMCID: PMC11318444 DOI: 10.1016/j.ajur.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 12/06/2023] [Indexed: 08/15/2024] Open
Abstract
Objective The secretome, comprising bioactive chemicals released by mesenchymal stem cells (MSCs), holds therapeutic promise in regenerative medicine. This review aimed to explore the therapeutic potential of the MSC secretome in regenerative urology, particularly for treating erectile dysfunction (ED), and to provide an overview of preclinical and clinical research on MSCs in ED treatment and subsequently to highlight the rationales, mechanisms, preclinical investigations, and therapeutic potential of the MSC secretome in this context. Methods The review incorporated an analysis of preclinical and clinical research involving MSCs in the treatment of ED. Subsequently, it delved into the existing knowledge regarding the MSC secretome, exploring its therapeutic potential. The methods included a comprehensive examination of relevant literature to discern the processes underlying the therapeutic efficacy of the MSC secretome. Results Preclinical research indicated the effectiveness of the MSC secretome in treating various models of ED. However, the precise mechanisms of its therapeutic efficacy remain unknown. The review provided insights into the anti-inflammatory, pro-angiogenic, and trophic properties of the MSC secretome. It also discussed potential advantages, such as avoiding issues related to cellular therapy, including immunogenicity, neoplastic transformation, and cost. Conclusion This review underscores the significant therapeutic potential of the MSC secretome in regenerative urology, particularly for ED treatment. While preclinical studies demonstrate promising outcomes, further research is essential to elucidate the specific mechanisms underlying the therapeutic efficacy before clinical application. The review concludes by discussing future perspectives and highlighting the challenges associated with the clinical translation of the MSC secretome in regenerative urology.
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Affiliation(s)
- Ria Margiana
- Department of Anatomy, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Master's Programme Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Andrology Program, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
- Indonesia General Academic Hospital, Depok, Indonesia
- Ciptomangunkusumo General Academic Hospital, Jakarta, Indonesia
| | - Younes Pilehvar
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Science, Urmia, Iran
| | - Fatkhurrohmah L. Amalia
- Andrology Program, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
- Dr. Kariadi Hospital, Semarang, Indonesia
| | - Silvia W. Lestari
- Master's Programme Biomedical Sciences, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Indonesia General Academic Hospital, Depok, Indonesia
- Ciptomangunkusumo General Academic Hospital, Jakarta, Indonesia
- Department of Medical Biology, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Supardi Supardi
- Andrology Program, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - Reny I'tishom
- Andrology Program, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Department of Biomedical Science, Faculty of Medicine, Universitas Airlangga Surabaya, Indonesia
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Bae SG, Yin GN, Ock J, Suh JK, Ryu JK, Park J. Single-cell transcriptome analysis of cavernous tissues reveals the key roles of pericytes in diabetic erectile dysfunction. eLife 2024; 12:RP88942. [PMID: 38856719 PMCID: PMC11164535 DOI: 10.7554/elife.88942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024] Open
Abstract
Erectile dysfunction (ED) affects a significant proportion of men aged 40-70 and is caused by cavernous tissue dysfunction. Presently, the most common treatment for ED is phosphodiesterase 5 inhibitors; however, this is less effective in patients with severe vascular disease such as diabetic ED. Therefore, there is a need for development of new treatment, which requires a better understanding of the cavernous microenvironment and cell-cell communications under diabetic condition. Pericytes are vital in penile erection; however, their dysfunction due to diabetes remains unclear. In this study, we performed single-cell RNA sequencing to understand the cellular landscape of cavernous tissues and cell type-specific transcriptional changes in diabetic ED. We found a decreased expression of genes associated with collagen or extracellular matrix organization and angiogenesis in diabetic fibroblasts, chondrocytes, myofibroblasts, valve-related lymphatic endothelial cells, and pericytes. Moreover, the newly identified pericyte-specific marker, Limb Bud-Heart (Lbh), in mouse and human cavernous tissues, clearly distinguishing pericytes from smooth muscle cells. Cell-cell interaction analysis revealed that pericytes are involved in angiogenesis, adhesion, and migration by communicating with other cell types in the corpus cavernosum; however, these interactions were highly reduced under diabetic conditions. Lbh expression is low in diabetic pericytes, and overexpression of LBH prevents erectile function by regulating neurovascular regeneration. Furthermore, the LBH-interacting proteins (Crystallin Alpha B and Vimentin) were identified in mouse cavernous pericytes through LC-MS/MS analysis, indicating that their interactions were critical for maintaining pericyte function. Thus, our study reveals novel targets and insights into the pathogenesis of ED in patients with diabetes.
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Affiliation(s)
- Seo-Gyeong Bae
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST)GwangjuRepublic of Korea
| | - Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urolog, Inha University School of MedicineIncheonRepublic of Korea
| | - Jiyeon Ock
- National Research Center for Sexual Medicine and Department of Urolog, Inha University School of MedicineIncheonRepublic of Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urolog, Inha University School of MedicineIncheonRepublic of Korea
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urolog, Inha University School of MedicineIncheonRepublic of Korea
- Program in Biomedical Science & Engineering, Inha UniversityIncheonRepublic of Korea
| | - Jihwan Park
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST)GwangjuRepublic of Korea
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Hotta Y, Oyama K, Yoshida T, Ieda N, Mori T, Horita Y, Kataoka T, Furukawa-Hibi Y, Ohya S, Nakagawa H, Kimura K. The Effects of a Red-Light Controllable Nitric Oxide Donor, NORD-1, on Erectile Dysfunction in Rats with Streptozotocin Induced Diabetes Mellitus. World J Mens Health 2024; 42:42.e58. [PMID: 38772543 DOI: 10.5534/wjmh.230362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 05/23/2024] Open
Abstract
PURPOSE Patients with diabetes mellitus (DM) often exhibit refractory erectile dysfunction (ED). Red-light-controllable nitric oxide donor (NORD-1) and red-light irradiation have successfully enhanced erectile function in intact rats. In this study, we investigated whether the combination of NORD-1 and red-light irradiation effectively treated ED in streptozotocin (STZ)-treated rats with DM. MATERIALS AND METHODS Seven-week-old male Sprague-Dawley rats were used in this study. Rats in the DM and sham groups received intravenous STZ (50 mg/kg) and saline, respectively. One week after treatment, the blood glucose level of rats in the DM group was >250 mg/dL. Five weeks after the treatment, we performed a functional study by measuring intracavernous pressure (ICP) under cavernous nerve stimulation before and after NORD-1 treatment with and without light irradiation. Additionally, we performed an isometric tension study using the corpus cavernosum of rats treated with NORD-1 or the control compound, SiR650. RESULTS The ICP/mean arterial pressure (MAP) ratio was significantly lower in the DM group than in the sham group before and after NORD-1 treatment without light irradiation (both p<0.05). After NORD-1 treatment with light irradiation, the ICP/MAP ratio in the sham and DM groups was significantly enhanced than before and after NORD-1 treatment without light irradiation (all p<0.05). The ICP/MAP ratio in the DM group after NORD-1 with light irradiation was similar to that in the sham group under normal conditions before NORD-1 treatment. Moreover, the systemic blood pressure was not affected by NORD-1 or light irradiation. In the tension study, the corpus cavernosum of rats treated with SiR650 was not changed by red light in the sham or DM groups. However, the rats treated with NORD-1 were strongly relaxed by red light in both groups. CONCLUSIONS NORD-1 and red-light irradiation could improve ED in the presence of DM without lowering blood pressure.
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Affiliation(s)
- Yuji Hotta
- Department of Clinical Pharmaceutics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Department of Hospital Pharmacy, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan.
| | - Kyoya Oyama
- Department of Hospital Pharmacy, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Takuma Yoshida
- Department of Hospital Pharmacy, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
- Department of Pharmacology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Naoya Ieda
- Department of Organic and Medicinal Chemistry, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Taiki Mori
- Department of Hospital Pharmacy, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Yasuhiro Horita
- Department of Clinical Pharmaceutics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Tomoya Kataoka
- Department of Pharmacology, Chiba Institute of Science, Choshi, Japan
| | - Yoko Furukawa-Hibi
- Department of Clinical Pharmaceutics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Susumu Ohya
- Department of Pharmacology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hidehiko Nakagawa
- Department of Organic and Medicinal Chemistry, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Kazunori Kimura
- Department of Clinical Pharmaceutics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Department of Hospital Pharmacy, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
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Wu C, Xiong Y, Fu F, Zhang F, Qin F, Yuan J. The Role of Autophagy in Erectile Dysfunction. World J Mens Health 2024; 42:42.e44. [PMID: 38606869 DOI: 10.5534/wjmh.230145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 01/18/2024] [Accepted: 01/28/2024] [Indexed: 04/13/2024] Open
Abstract
Autophagy is a conservative lysosome-dependent material catabolic pathway, and exists in all eukaryotic cells. Autophagy controls cell quality and survival by eliminating intracellular dysfunction substances, and plays an important role in various pathophysiology processes. Erectile dysfunction (ED) is a common male disease. It is resulted from a variety of causes and pathologies, such as diabetes, hypertension, hyperlipidemia, aging, spinal cord injury, or cavernous nerve injury caused by radical prostatectomy, and others. In the past decade, autophagy has begun to be investigated in ED. Subsequently, an increasing number of studies have revealed the regulation of autophagy contributes to the recovery of ED, and which is mainly involved in improving endothelial function, smooth muscle cell apoptosis, penile fibrosis, and corpus cavernosum nerve injury. Therefore, in this review, we aim to summarize the possible role of autophagy in ED from a cellular perspective, and we look forward to providing a new idea for the pathogenesis investigation and clinical treatment of ED in the future.
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Affiliation(s)
- Changjing Wu
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Yang Xiong
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Fudong Fu
- Institutes for Systems Genetics, West China Hospital, Sichuan University, Chengdu, China
| | - Fuxun Zhang
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Feng Qin
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Jiuhong Yuan
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China.
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Yuan P, Li X, Xiong WJ, Jiang J, Jiang R. Downregulation of the expression of galanin impairs erectile function in hypoandrogenic rats. Sex Med 2023; 11:qfad029. [PMID: 37351545 PMCID: PMC10281959 DOI: 10.1093/sexmed/qfad029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/05/2023] [Accepted: 05/23/2023] [Indexed: 06/24/2023] Open
Abstract
Background The relationship between galanin and erectile function under low androgen levels is still unclear. Aim To explore whether a low testosterone level damages the erection of a rat by regulating the expression of galanin and GalR in penile cavernous tissue. Methods Thirty-six male Sprague-Dawley rats, 8 weeks of age, were randomly grouped as follows (n = 6): control, castration, castration + testosterone replacement, control + transfection, castration + transfection, and castration + empty transfection. At 4 weeks after castration, rats in the transfection group were injected with lentivirus carrying the targeting galanin gene (2 × 108 TU/mL, 10 μL) in the corpus cavernosum. After 1 week of injection, the intracavernosal pressure (ICP), mean arterial blood pressure (MAP), nitric oxide (NO), serum testosterone concentration, galanin, GalR1-3, ROCK1, ROCK2, and p-eNOS/eNOS in the rat penile tissues were evaluated. Outcomes ICPmax/MAP and the expression of galanin in the corpus cavernosum in castrated rats were obviously decreased as compared with those in the control rats. Results The castrated rats showed remarkably lower ICPmax/MAP, galanin, GalR1-3, p-eNOS/eNOS, and NO content and markedly higher ROCK1 and ROCK2 in penile tissues than the control group (P < .05). The transfected rats administrated with LV Gal had obviously higher ICPmax/MAP, p-eNOS/eNOS, and NO content and less ROCK1 and ROCK2 protein expression in the corpus cavernosum when compared with the castration group (P < .05). Clinical Translation Upregulating the expression of galanin in the penile corpus cavernosum might be a novel method of treating erectile dysfunction caused by a low androgen level. Strengths and Limitations The conclusions obtained in the animal experiments need to be confirmed in human data. Conclusion The erectile function of hypoandrogen rats might be inhibited by downregulating the level of galanin and GalR1-3, upregulating ROCK1 and ROCK2 levels, and inhibiting the eNOS/NO signaling pathway in penile corpus cavernosum.
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Affiliation(s)
| | | | - Wen-ju Xiong
- Department of Urology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Jun Jiang
- Corresponding authors: Department of Thyroid Surgery, The Affiliated Hospital of Southwest Medical University, Taiping Road, Luzhou, Sichuan 646000, China. . Department of Urology, Nephropathy Clinical Medical Research Center of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Taiping Road, Luzhou, Sichuan 646000, China.
| | - Rui Jiang
- Corresponding authors: Department of Thyroid Surgery, The Affiliated Hospital of Southwest Medical University, Taiping Road, Luzhou, Sichuan 646000, China. . Department of Urology, Nephropathy Clinical Medical Research Center of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Taiping Road, Luzhou, Sichuan 646000, China.
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Liu S, Li K, Zhao Y, Wang W, Bao J, Wang X, Shi L, Zhou L, Fu Q. Fermented Gynochthodes officinalis (F.C.How) Razafim. & B.Bremer alleviates diabetic erectile dysfunction by attenuating oxidative stress and regulating PI3K/Akt/eNOS pathway. JOURNAL OF ETHNOPHARMACOLOGY 2023; 307:116249. [PMID: 36775080 DOI: 10.1016/j.jep.2023.116249] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE As a traditional Chinese medicine, Gynochthodes officinalis (F.C.How) Razafim. & B.Bremer (G. officinalis) has been historically as tonics to treat impotence. Fermentation is an ancient processing method for traditional Chinese medicine. Whether fermentation affects the therapeutic effects of G. officinalis on diabetic erectile dysfunction has so far remained unknown. AIMS OF THE STUDY In this research, we aim to determine the effect of fermented or unfermented G. officinalis root extract on diabetes mellitus-induced erectile dysfunction (DMED) and the potential mechanisms. MATERIALS AND METHODS Candida sp. B5, Lactobacillus sp. Y5 and Lactobacillus sp. R2 are applied for the fermentation of G. officinalis. The optimum fermentation conditions of G. officinalis are investigated. Sprague-Dawley rats were used to establish a diabetic erectile dysfunction model, treated with different concentrations of fermented or unfermented G. officinalis, to compare the effect of fermented or unfermented G. officinalis on DMED and explore underlying mechanisms by assessment of intracavernous pressure, ELISA, Western blot, Masson's trichrome staining, and immunofluorescence. The corpus cavernosum smooth muscle cells (CCSMCs) and Schwann cells were isolated and used to investigate the effect of fermented or unfermented G. officinalis on hydrogen peroxide (H2O2)-induced apoptosis. RESULTS The results reveal the optimum fermentation conditions of G. officinalis using Lactobacillus sp. Y5 were determined to be 35 °C, the ratio of solid to liquid 1:10, and six days of fermentation. The fermentation increases the abundance of major active ingredients within G. officinalis. After fermented or unfermented G. officinalis treatment for eight weeks by oral gavage at a dose of 100 mg kg-1 or 300 mg kg-1, the results show that the fermentation enhances the effect of G. officinalis on diabetic erectile dysfunction detected by intracavernous pressure. The protein expressions of the PI3K/Akt/eNOS pathway were upregulated in diabetic rats after fermented or unfermented G. officinalis treatment, while the level of oxidative stress was significantly reduced. Meanwhile, Masson's trichrome staining also displayed an improvement in the ratio of smooth muscle to collagen. In vitro experiments confirmed that fermented or unfermented G. officinalis protected CCSMCs and Schwann cells from apoptosis. In contrast, fermented G. officinalis showed a fortified protective effect over unfermented G. officinalis. CONCLUSION Our findings suggest that fermentation can increase the composition of main active ingredients in G. officinalis and enhance its role in diabetic erectile dysfunction. It augurs the potential therapeutic application of fermented G. officinalis well for treating diabetic erectile dysfunction.
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Affiliation(s)
- Shuai Liu
- Department of Urology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China; Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Kefan Li
- Department of Urology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Yanfen Zhao
- School of Biological Science and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, China
| | - Wenbo Wang
- School of Biological Science and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, China
| | - Jie Bao
- School of Biological Science and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, China
| | - Xinxin Wang
- School of Biological Science and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, China
| | - Liwen Shi
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, 250355, China
| | - Lei Zhou
- School of Biological Science and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, China.
| | - Qiang Fu
- Department of Urology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China; Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
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Argonaute 2 Restores Erectile Function by Enhancing Angiogenesis and Reducing Reactive Oxygen Species Production in Streptozotocin (STZ)-Induced Type-1 Diabetic Mice. Int J Mol Sci 2023; 24:ijms24032935. [PMID: 36769259 PMCID: PMC9918048 DOI: 10.3390/ijms24032935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/22/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Severe vascular and nerve damage from diabetes is a leading cause of erectile dysfunction (ED) and poor response to oral phosphodiesterase 5 inhibitors. Argonaute 2 (Ago2), a catalytic engine in mammalian RNA interference, is involved in neurovascular regeneration under inflammatory conditions. In the present study, we report that Ago2 administration can effectively improve penile erection by enhancing cavernous endothelial cell angiogenesis and survival under diabetic conditions. We found that although Ago2 is highly expressed around blood vessels and nerves, it is significantly reduced in the penis tissue of diabetic mice. Exogenous administration of the Ago2 protein restored erectile function in diabetic mice by reducing reactive oxygen species production-signaling pathways (inducing eNOS Ser1177/NF-κB Ser536 signaling) and improving cavernous endothelial angiogenesis, migration, and cell survival. Our study provides new evidence that Ago2 mediation may be a promising therapeutic strategy and a new approach for diabetic ED treatment.
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Ock J, Suh JK, Hong SS, Kang JH, Yin GN, Ryu JK. IGFBP5 antisense and short hairpin RNA (shRNA) constructs improve erectile function by inducing cavernosum angiogenesis in diabetic mice. Andrology 2023; 11:358-371. [PMID: 35866351 PMCID: PMC10087557 DOI: 10.1111/andr.13234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 05/17/2022] [Accepted: 05/26/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND The incidence of diabetic erectile dysfunction (ED) is rapidly increasing, and due to the severe angiopathy caused by diabetes, current drugs are ineffective at treating ED. Insulin-like growth factor-binding protein 5 (IGFBP5) promotes cell death and induces apoptosis in various cell types. OBJECTIVES To evaluate the effectiveness of IGFBP5 knockdown in improving erectile function in diabetic mice. MATERIALS AND METHODS Diabetes was induced by injecting streptozotocin (STZ) intraperitoneally into male 8-week-old C57BL/6 mice. Eight weeks after diabetes induction, mice were divided into four groups: a nondiabetic control group and three STZ-induced diabetic mice groups, which were administered intracavernous injections of phosphate buffered saline, scrambled control shRNA, or shRNA targeting mouse IGFBP5 (shIGFBP5) lentivirus particles. Two weeks later, we measured erectile function by electrically stimulating the bilateral cavernous nerve. To mimic diabetic angiopathy, primary cavernous endothelial cells (MCECs) from healthy mice were cultured and treated with glucose. RESULTS IGFBP5 expression in MCECs or cavernous tissues were significantly increased under diabetic conditions, and knockdown of IGFBP5 induced MCECs angiogenic activity under high-glucose conditions. STZ-induced diabetic mice had reduced erectile function, but shIGFBP5 treatment resulted in significant improvements (to 90% of the nondiabetic control group level). Furthermore, in diabetic mice, numbers of cavernous endothelial cells, pericytes, and neuronal cells were increased by shIGFBP5 treatment, which also increased eNOS Ser1177 phosphorylation, decreased permeability and apoptosis of cavernous endothelial cells. In addition, IGFBP5 was found to mediate the AKT, ERK, p38 signaling pathways. DISCUSSION AND CONCLUSION Knockdown of IGFBP5 improved erectile function in diabetic mice by promoting cell proliferation and reducing apoptosis and permeability. Local inhibition of IGFBP5 expression may provide a new treatment strategy for diabetic ED and other ischemic vascular or neurological diseases.
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Affiliation(s)
- Jiyeon Ock
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Soon-Sun Hong
- Department of Biomedical Sciences, College of Medicine, and Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea
| | - Ju-Hee Kang
- Department of Pharmacology and Medicinal Toxicology Research Center, Inha University College of Medicine, Incheon, Republic of Korea
| | - Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
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Cayetano-Alcaraz AA, Tharakan T, Chen R, Sofikitis N, Minhas S. The management of erectile dysfunction in men with diabetes mellitus unresponsive to phosphodiesterase type 5 inhibitors. Andrology 2023; 11:257-269. [PMID: 35929992 DOI: 10.1111/andr.13257] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Erectile dysfunction is associated with diabetes mellitus with an estimated prevalence of 52.5% in the diabetic population. The first-line therapy for erectile dysfunction is phosphodiesterase type 5 inhibitors, but data suggest that diabetic men may be less responsive than non-diabetic men. Thus, other treatments, including intracavernosal injections, intraurethral prostaglandin, vacuum erection devices and penile prosthetic surgery, should be considered in management of diabetic men with erectile dysfunction refractory to phosphodiesterase type 5 inhibitors. Furthermore, combination therapy of phosphodiesterase type 5 inhibitors and other oral treatments such as arginine or l-carnitine may have synergistic effects resulting in better outcomes. In addition, there are novel therapies such as low-intensity shockwave therapy and stem-cell therapy, which may also be effective in targeted treatment modalities. Furthermore, studies suggest that erectile dysfunction can be improved by targeting concurrent comorbidities or metabolic diseases such as depression, hypertension, hypogonadism, and dyslipidaemia. We present an evidence-based narrative review focusing on the management of erectile dysfunction in diabetic men who have not responded to phosphodiesterase type 5 inhibitors. CONCLUSIONS Both clinicians and patients should be aware of the different management options in diabetic patients who have not responded to phosphodiesterase type 5 inhibitors.
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Affiliation(s)
| | - Tharu Tharakan
- Department of Urology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - Runzhi Chen
- Faculty of Medicine, Imperial College London, London, UK
| | - Nikolaos Sofikitis
- Department of Urology, University of Ioannina School of Medicine, Ioannina, Greece
| | - Suks Minhas
- Department of Urology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK
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11
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Sevilleja-Ortiz A, El Assar M, García-Gómez B, La Fuente JM, Alonso-Isa M, Romero-Otero J, Martínez-Salamanca JI, Fernández A, Rodríguez-Mañas L, Angulo J. STIM/Orai Inhibition as a Strategy for Alleviating Diabetic Erectile Dysfunction Through Modulation of Rat and Human Penile Tissue Contractility and in vivo Potentiation of Erectile Responses. J Sex Med 2022; 19:1733-1749. [PMID: 36195535 DOI: 10.1016/j.jsxm.2022.08.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/12/2022] [Accepted: 08/23/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Stromal interaction molecule (STIM)/Orai calcium entry system appears to have a role in erectile dysfunction (ED) pathophysiology but its specific contribution to diabetic ED was not elucidated. AIM To evaluate STIM/Orai inhibition on functional alterations associated with diabetic ED in rat and human penile tissues and on in vivo erectile responses in diabetic rats. METHODS Rat corpus cavernosum (RCC) strips from nondiabetic (No DM) and streptozotocin-induced diabetic (DM) rats and human penile resistance arteries (HPRA) and corpus cavernosum (HCC) from ED patients undergoing penile prosthesis insertion were functionally evaluated in organ chambers and wire myographs. Erectile function in vivo in rats was assessed by intracavernosal pressure (ICP) responses to cavernous nerve electrical stimulation (CNES). Expression of STIM/Orai elements in HCC was determined by immunofluorescence and immunoblot. MAIN OUTCOME MEASURES Functional responses in RCC, HCC and HPRA and STIM/Orai protein expression in HCC. In vivo erectile responses to CNES. RESULTS Inhibition of Orai channels with YM-58483 (20 µM) significantly reduced adrenergic contractions in RCC but more effectively in DM. Thromboxane-induced and neurogenic contractions were reduced by STIM/Orai inhibition while defective endothelial, neurogenic and PDE5 inhibitor-induced relaxations were enhanced by YM-58483 (10 µM) in RCC from DM rats. In vivo, YM-58483 caused erections and attenuated diabetes-related impairment of erectile responses. YM-58483 potentiated the effects of PDE5 inhibition. In human tissues, STIM/Orai inhibition depressed adrenergic and thromboxane-induced contractions in ED patients more effectively in those with type 2 diabetes. Diabetes was associated with increased expression of Orai1 and Orai3 in ED patients. CLINICAL TRANSLATION Targeting STIM/Orai to alleviate diabetes-related functional alterations of penile vascular tissue could improve erectile function and potentiate therapeutic effects of PDE5 inhibitors in diabetic ED. STRENGTHS AND LIMITATIONS Improving effects of STIM/Orai inhibition on diabetes-related functional impairment was evidenced in vitro and in vivo in an animal model and validated in human tissues from ED patients. Functional findings were complemented with expression results. Main limitation was low numbers of human experiments due to limited human tissue availability. CONCLUSIONS STIM/Orai inhibition alleviated alterations of functional responses in vitro and improved erectile responses in vivo in diabetic rats, potentiating the effects of PDE5 inhibition. STIM/Orai inhibition was validated as a target to modulate functional alterations of human penile vascular tissue in diabetic ED where Orai1 and Orai3 channels were upregulated. STIM/Orai inhibition could be a potential therapeutic strategy to overcome poor response to conventional ED therapy in diabetic patients. Sevilleja-Ortiz A, El Assar M, García-Gómez B, et al. STIM/Orai Inhibition as a Strategy for Alleviating Diabetic Erectile Dysfunction Through Modulation of Rat and Human Penile Tissue Contractility and in vivo Potentiation of Erectile Responses. J Sex Med 2022;19:1733-1749.
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Affiliation(s)
- Alejandro Sevilleja-Ortiz
- Fundación para la Investigación Biomédica del Hospital Universitario Ramón y Cajal, Madrid, Spain; Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Mariam El Assar
- Fundación para la Investigación Biomédica del Hospital Universitario de Getafe, Getafe, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - Borja García-Gómez
- Servicio de Urología, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
| | - José M La Fuente
- Serviço de Urologia, Hospital Geral de Santo Antonio, Porto, Portugal
| | - Manuel Alonso-Isa
- Servicio de Urología, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
| | | | | | - Argentina Fernández
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Leocadio Rodríguez-Mañas
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain; Servicio de Geriatría, Hospital Universitario de Getafe, Getafe, Spain
| | - Javier Angulo
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Universitario Ramón y Cajal, Madrid, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain.
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12
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Soltani S, Mansouri K, Parvaneh S, Thakor AS, Pociot F, Yarani R. Diabetes complications and extracellular vesicle therapy. Rev Endocr Metab Disord 2022; 23:357-385. [PMID: 34647239 DOI: 10.1007/s11154-021-09680-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/30/2021] [Indexed: 02/06/2023]
Abstract
Diabetes is a chronic disorder characterized by dysregulated glycemic conditions. Diabetic complications include microvascular and macrovascular abnormalities and account for high morbidity and mortality rates in patients. Current clinical approaches for diabetic complications are limited to symptomatic treatments and tight control of blood sugar levels. Extracellular vesicles (EVs) released by somatic and stem cells have recently emerged as a new class of potent cell-free therapeutic delivery packets with a great potential to treat diabetic complications. EVs contain a mixture of bioactive molecules and can affect underlying pathological processes in favor of tissue healing. In addition, EVs have low immunogenicity and high storage capacity while maintaining nearly the same regenerative and immunomodulatory effects compared to current cell-based therapies. Therefore, EVs have received increasing attention for diabetes-related complications in recent years. In this review, we provide an outlook on diabetic complications and summarizes new knowledge and advances in EV applications. Moreover, we highlight recommendations for future EV-related research.
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Affiliation(s)
- Setareh Soltani
- Clinical Research Development Center, Taleghani and Imam Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Kamran Mansouri
- Medical Biology Research Center, Health Technology Institute, Kermanshah, University of Medical Sciences, Kermanshah, Iran
| | - Shahram Parvaneh
- Regenerative Medicine and Cellular Pharmacology Laboratory (HECRIN), Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
- Research Institute of Translational Biomedicine, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Avnesh S Thakor
- Interventional Regenerative Medicine and Imaging Laboratory, Department of Radiology, Stanford University School of Medicine, Palo Alto, CA, 94304, USA
| | - Flemming Pociot
- Translational Type 1 Diabetes Research, Department of Clinical Research, Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | - Reza Yarani
- Interventional Regenerative Medicine and Imaging Laboratory, Department of Radiology, Stanford University School of Medicine, Palo Alto, CA, 94304, USA.
- Translational Type 1 Diabetes Research, Department of Clinical Research, Steno Diabetes Center Copenhagen, Gentofte, Denmark.
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13
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Hotta Y, Mori T, Kimura K. [A novel approach to treating erectile dysfunction with a light-controlled nitric oxide donor]. Nihon Yakurigaku Zasshi 2022; 157:172-175. [PMID: 35491112 DOI: 10.1254/fpj.21112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
It has long been known that nitric oxide (NO) is involved in the initiation and maintenance of erection. For this reason, NO supplementation has been considered a useful target for the treatment of erectile dysfunction (ED), and many studies have been conducted. However, to date, no compounds have been launched for a variety of reasons. One of the reasons is the systemic adverse reactions. In order to solve this problem, we focused on light-controlled NO donors and investigate their potential application in ED treatment. Light-controlled NO donors have three main characteristics: first, they release NO only at the site of light irradiation, second, they release NO only during the time of light irradiation, and third, the amount of NO released can be controlled according to the light intensity. These features suggest that light-responsive NO donors may be useful for ED therapy. Our group has been working on the development of light-controlled NO donors, and has so far developed the blue light-controlled NO donor "NOBL-1", the yellowish-green light-controlled NO donor "NO-Rosa", and the red light-controlled NO donor "NORD-1". Our recent studies have shown that NORD-1 and red light can enhance the erectile response in rats at the in vivo level. Next, we examined the effects of NORD-1 and red light using a neurogenic ED model, which is believed to be less effective than existing ED drugs. The results showed that red light irradiation after NORD-1 administration enhanced the erectile response and improved ED in the neurogenic ED model. These results suggest that NORD-1, a light-controlled NO donor, and red light can enhance the erectile response in rats and may have potential as an ED drug. Although optimization of the compound is essential, it is expected that a new therapeutic approach called photobiotherapy for ED will be developed in the future.
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Affiliation(s)
- Yuji Hotta
- Nagoya City University, Graduate School of Pharmaceutical Sciences
| | - Taiki Mori
- Nagoya City University, Graduate School of Pharmaceutical Sciences
| | - Kazunori Kimura
- Nagoya City University, Graduate School of Pharmaceutical Sciences.,Nagoya City University, Graduate School of Medical Sciences
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14
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Xu Y, Zhang F, Li C, Hao H, Hao Y. Angiotensin-(1-7) improves diabetes mellitus-induced erectile dysfunction in rats by regulating nitric oxide synthase levels. Peptides 2022; 151:170765. [PMID: 35181349 DOI: 10.1016/j.peptides.2022.170765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/31/2022] [Accepted: 02/08/2022] [Indexed: 10/19/2022]
Abstract
This study explores the role of inducible nitric oxide synthase (iNOS) in the pathogenesis of diabetes mellitus-induced erectile dysfunction (DMED) and the effect of angiotensin 1-7 (Ang- [1-7]) on NOS levels. A type 2 diabetes mellitus (DM) rat model was established. Erectile function was assessed by measuring intracavernous pressure and mean arterial pressure after electrical stimulation. The expression of iNOS, endothelial NOS (eNOS), eNOS phosphorylated at Ser 1177 (p-eNOS [Ser 1177]), and AKT/p-AKT in corpus cavernosum smooth muscle cells (CCSMCs) was measured by Western blotting and immunofluorescence. The plasma levels of NO, SOD, malondialdehyde, and peroxynitrite were calculated. Intracellular calcium content was determined by flow cytometry. DMED rats exhibited decreased erectile function and severe oxidative stress. Ang-(1-7) treatment improved erectile response and suppressed oxidative stress by upregulating p-eNOS/eNOS and downregulating iNOS levels. Silencing iNOS in CCSMCs decreased oxidative stress and intracellular calcium levels induced by high glucose. In turn, iNOS overexpression increased oxidative stress and intracellular calcium level. Treatment with the MAS receptor antagonist A779 and the Akt antagonist LY294002 reversed the effects of Ang-(1-7) on iNOS. Ang-(1-7) improved DMED through the MAS/AKT signaling pathway.
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Affiliation(s)
- Yi Xu
- Department of Endocrinology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China; First Department of Endocrinology, Tangshan Gongren Hospital, Tangshan City, Hebei Province, China
| | - Fang Zhang
- Department of Endocrinology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Chunhui Li
- Department of Endocrinology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Huiyao Hao
- Department of Endocrinology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Yongmei Hao
- Department of Endocrinology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China.
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15
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Angulo J, Hannan JL. Cardiometabolic Diseases and Female Sexual Dysfunction: Animal Studies. J Sex Med 2022; 19:408-420. [DOI: 10.1016/j.jsxm.2021.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 01/21/2023]
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16
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Assar ME, Angulo J, García-Rojo E, Sevilleja-Ortiz A, García-Gómez B, Fernández A, Sánchez-Ferrer A, La Fuente JM, Romero-Otero J, Rodríguez-Mañas L. Early manifestation of aging-related vascular dysfunction in human penile vasculature-A potential explanation for the role of erectile dysfunction as a harbinger of systemic vascular disease. GeroScience 2022; 44:485-501. [PMID: 34962617 PMCID: PMC8811115 DOI: 10.1007/s11357-021-00507-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 12/22/2021] [Indexed: 01/05/2023] Open
Abstract
Advanced age is related to functional alterations of human vasculature, but erectile dysfunction precedes systemic manifestations of vascular disease. The current study aimed to simultaneously evaluate the influence of aging on vascular function (relaxation and contraction responses) in systemic human vascular territories: aorta (HA) and resistance mesenteric arteries (HMA) and human corpus cavernosum (HCC) and penile resistance arteries (HPRA). Associations of oxidative stress and inflammation circulating biomarkers with age and functional responses were also determined. Vascular specimens were obtained from 76 organ donors (age range 18-87). Four age-groups were established: < 40, 40-55, 56-65 and > 65 years old. Increasing age was associated with a decline in endothelium-dependent relaxation induced by BK in HMA (r = -0.597, p = 0.0001), or by ACh in HCC (r = -0.505, p = 0.0022), and HPRA (r = -0.601, p = 0.0012). Significant impairment was detected at > 65 years old in HMA but earlier in penile vasculature (> 55 years old). Age-related reduction to H2O2-vasodilatory response started before in HCC (56-65 years old) than in HA (> 65 years old). In contrast to relaxation responses, aging-related hypercontractility to adrenergic stimulation was homogeneous: contractions significantly increased in subjects > 55 years old in all tested vessels. Although not significantly age related, circulating levels of ADMA (r = -0.681, p = 0.0052) and TNF-α (r = -0.537, p = 0.0385) were negatively correlated with endothelial vasodilation in HMA but not in HCC or HPRA. Penile vasculature exhibits an early impairment of endothelium-dependent and H2O2-induced vasodilations when compared to mesenteric microcirculation and aorta. Therefore, functional susceptibility of penile vasculature to the aging process may account for anticipation of erectile dysfunction to systemic manifestations of vascular disease.
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Affiliation(s)
- Mariam El Assar
- Fundación de Investigación Biomédica, del Hospital Universitario de Getafe, Getafe, Spain
- Centro de Investigación Biomédica en Red de Fragilidad Y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Angulo
- Centro de Investigación Biomédica en Red de Fragilidad Y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Universitario Ramón Y Cajal, Madrid, Spain
| | - Esther García-Rojo
- Department of Urology, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital, 12 de Octubre (imas12), Madrid, Spain
| | - Alejandro Sevilleja-Ortiz
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Universitario Ramón Y Cajal, Madrid, Spain
| | - Borja García-Gómez
- Department of Urology, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital, 12 de Octubre (imas12), Madrid, Spain
| | - Argentina Fernández
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Universitario Ramón Y Cajal, Madrid, Spain
| | - Alberto Sánchez-Ferrer
- Fundación de Investigación Biomédica, del Hospital Universitario de Getafe, Getafe, Spain
| | - José M La Fuente
- Serviço de Urologia, Hospital Geral Santo Antonio, Porto, Portugal
| | - Javier Romero-Otero
- Department of Urology, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital, 12 de Octubre (imas12), Madrid, Spain
| | - Leocadio Rodríguez-Mañas
- Fundación de Investigación Biomédica, del Hospital Universitario de Getafe, Getafe, Spain.
- Centro de Investigación Biomédica en Red de Fragilidad Y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain.
- Division of Geriatric Medicine, Servicio de Geriatría, Hospital Universitario de Getafe, Ctra de Toledo km 12, 500, 8905, Getafe, Spain.
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17
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Zelinskaya I, Kornushin O, Savochkina E, Dyachuk V, Vasyutina M, Galagudza M, Toropova Y. Vascular region-specific changes in arterial tone in rats with type 2 diabetes mellitus: Opposite responses of mesenteric and femoral arteries to acetylcholine and 5-hydroxytryptamine. Life Sci 2021; 286:120011. [PMID: 34606853 DOI: 10.1016/j.lfs.2021.120011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 11/30/2022]
Abstract
AIMS Type 2 diabetes mellitus (T2DM) ranks in the top 10 causes of mortality worldwide. The key factor of T2DM vascular complications is endothelial dysfunction. It is characterized by the vessels motor activity disruption and endothelium-derived factors imbalance. The blood vessels morphological and molecular heterogeneity greatly affects the changes occurring in T2DM. Therefore, we conducted a comparative study of vascular bed changes occurring in T2DM. MAIN METHODS Male Wistar rats were fed a high-fat diet for 20 weeks, followed by a single streptozotocin injection (20 mg/kg). T2DM was confirmed with an oral glucose tolerance test. KEY FINDINGS A dose-dependent contraction study showed an increase in third-order mesenteric arterioles response to serotonin but not to phenylephrine. These vessels also exhibited a decrease in acetylcholine-dependent relaxation and an increase in guanylate cyclase function. At the same time, the femoral arteries showed a tendency for increased acetylcholine-dependent relaxation. The blood plasma analysis revealed low bioavailable nitric oxide and high levels of endothelin-1 and ROS. SIGNIFICANCE This knowledge, in conjunction with the features of the T2DM course, can allow further targeted approaches development for the prevention and treatment of vascular complications occurring in the disease.
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Affiliation(s)
- Irina Zelinskaya
- Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Oleg Kornushin
- Almazov National Medical Research Centre, Saint Petersburg, Russia
| | | | | | - Marina Vasyutina
- Almazov National Medical Research Centre, Saint Petersburg, Russia
| | - Michael Galagudza
- Almazov National Medical Research Centre, Saint Petersburg, Russia; Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia
| | - Yana Toropova
- Almazov National Medical Research Centre, Saint Petersburg, Russia.
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Yin Y, Peng J, Zhou J, Chen H, Peng D, Li D, Gan Y, Yin G, Tang Y. Tetrathiomolybdate Partially Alleviates Erectile Dysfunction of Type 1 Diabetic Rats Through Affecting Ceruloplasmin/eNOS and Inhibiting Corporal Fibrosis and Systemic Inflammation. Sex Med 2021; 10:100455. [PMID: 34818604 PMCID: PMC8847815 DOI: 10.1016/j.esxm.2021.100455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 11/28/2022] Open
Abstract
INTRODUCTION Patients with erectile dysfunction induced by diabetes mellitus (DMED) show a poor effect rate for oral phosphodiesterase type 5 inhibitors (PDE5is). Therefore, the new therapeutic strategy is necessary in patients with DMED. AIM To investigate whether Tetrathiomolybdate (TM) supplementation could ameliorate DMED by activation of eNOS. METHODS Twenty-four diabetic rats were induced by intraperitoneal injection of streptozotocin (STZ) and the other 6 normal rats constituted the control group. Eight weeks later, the erectile function of rats was assessed with an apomorphine test. Only some rats with DMED were treated with TM orally every day for 4 weeks; the other rats remained in the same condition for 4 weeks. After 1 week washout, the erectile function of rats in each group was evaluated. Then, the serum concentration of IL-6 and histologic changes of corpus cavernosum were measured. MAIN OUTCOME MEASURE Erectile function was measured after DMED rats treated with TM. The cavernosum level of Ceruloplasmin (Cp), eNOS, endothelial cell content, corporal fibrosis, apoptosis rate and the serum level of IL-6 were also assayed. RESULTS Erectile function in the DMED group was significantly impaired compared with the control group and was partly, but significantly, improved in the DMED+TM group. The DMED group showed upregulation of Cp and inhibition of eNOS, but the inhibition was partly reversed in the DMED+TM group. The DMED group showed serious corporal fibrosis. However, TM supplementation partly increased the ratio of smooth muscle to collagen, decreased the ratio of apoptosis. What's more, gavage administration of TM profoundly decreased the serum level of IL-6 in DMED rats. CONCLUSION TM supplementation inhibits endothelial dysfunction, corporal fibrosis, and systemic inflammation, ultimately leading to partial improvement of DMED in rats. Yin Y, Peng J, Zhou J, et al., Tetrathiomolybdate Partially Alleviates Erectile Dysfunction of Type 1 Diabetic Rats Through Affecting Ceruloplasmin/eNOS and Inhibiting Corporal Fibrosis and Systemic Inflammation. Sex Med 2021;XX:XXXXXX.
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Affiliation(s)
- Yinghao Yin
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jingxuan Peng
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jun Zhou
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hanfei Chen
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Dongyi Peng
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Dongjie Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China; Institute of Clinical Pharmacology, Central South University; Hunan Key Laboratory of Pharmacogenetics, Changsha, China; Xiangya International Medical Center, Department of Geriatric Urology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Yu Gan
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Guangming Yin
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China.
| | - Yuxin Tang
- Department of Urology, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China; Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China.
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Zhou B, Chen Y, Yuan H, Wang T, Feng J, Li M, Liu J. NOX1/4 Inhibitor GKT-137831 Improves Erectile Function in Diabetic Rats by ROS Reduction and Endothelial Nitric Oxide Synthase Reconstitution. J Sex Med 2021; 18:1970-1983. [PMID: 34649814 DOI: 10.1016/j.jsxm.2021.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 09/09/2021] [Accepted: 09/13/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Previous studies have shown that oxidative stress contributes to hyperglycemia-induced erectile dysfunction. A preferential direct inhibitor of NOX1 and NOX4, GKT-137831, exhibited a strong anti‑oxidative role via blockade of reactive oxygen species (ROS) generation in endothelial cells, but whether GKT-137831 could improve erectile function was not clear. AIM Our study was designed to investigate the effect of NOX1/4 inhibition on improving diabetic erectile dysfunction (ED) in rats. METHODS We used streptozotocin to induce type 1 diabetes mellitus (DM) in 32 male Sprague Dawley (SD) rats (8 weeks old). Eight weeks later, type 1 diabetes mellitus-induced erectile dysfunction (DMED) in rats was confirmed using an apomorphine test. Our study consisted of 3 groups: (i) nondiabetic control group (n = 8), (ii) DMED + vehicle group (DMED group; n = 8), and (iii) DMED + GKT-137831 group (n = 9); GKT-137831 was given as a once-daily intraperitoneal injection for 4 weeks. Cavernous nerve electrostimulation was used to evaluate erectile function. Western blot, ELISA, immunohistochemistry, and immunofluorescence were used to measure expression of specific proteins, and DHE fluorescent probe was performed to detect ROS level. OUTCOMES Intracavernous pressure (ICP), nitric oxide (NO)/cyclic guanosine monophosphate (cGMP) signaling pathway, oxidative stress level, inflammatory response, corporal autophagy, and apoptosis were measured. RESULTS Erectile function in the DMED group was significantly impaired compared to the nondiabetic control group, whereas this impairment was improved with GKT-137831 treatment by 70%. Similarly, endothelial function and overactivated oxidative stress in the corpus cavernosum (CC) of the DMED + GKT-137831 group were improved. The DMED group showed serious inflammatory responses and excessive autophagy, which were inhibited by GKT-137831 treatment in the DMED + GKT-137831 group. CLINICAL TRANSLATION Our study showed improvement in erectile function with GKT-137831 in a diabetic rat ED model. STRENGTH AND LIMITATIONS This study suggested for the first time that GKT-137831, an NOX1/4 inhibitor undergoing clinical trials, is effective in improving erectile function in rats with type 1 DMED. However, we only investigated GKT-137831 treatment of streptozotocin-induced type 1 diabetic rats, and therapeutic evidence in other types of diabetes is lacking. CONCLUSION GKT-137831 improves erectile function by 70% in type 1 DMED rats and constitutes a promising compound for the treatment of type 1 DMED, likely by inhibition of overactivated oxidative stress, down-regulation of proinflammatory factors, and amelioration of excessive autophagy and endothelial function. B Zhou, Y Chen, H Yuan, et al. NOX1/4 Inhibitor GKT-137831 Improves Erectile Function in Diabetic Rats by ROS Reduction and Endothelial Nitric Oxide Synthase Reconstitution. J Sex Med 2021;XX:XXX-XXX.
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Affiliation(s)
- Bingyan Zhou
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yinwei Chen
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huixing Yuan
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Wang
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiexiong Feng
- Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mingchao Li
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Jihong Liu
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Rogacka D, Audzeyenka I, Rachubik P, Szrejder M, Typiak M, Angielski S, Piwkowska A. Involvement of nitric oxide synthase/nitric oxide pathway in the regulation of SIRT1-AMPK crosstalk in podocytes: Impact on glucose uptake. Arch Biochem Biophys 2021; 709:108985. [PMID: 34252390 DOI: 10.1016/j.abb.2021.108985] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/23/2021] [Accepted: 07/08/2021] [Indexed: 01/01/2023]
Abstract
The protein deacetylase sirtuin 1 (SIRT1) and adenosine monophosphate-dependent protein kinase (AMPK) play important roles in the development of insulin resistance. In glomerular podocytes, crosstalk between these two enzymes may be altered under hyperglycemic conditions. SIRT1 protein levels and activity and AMPK phosphorylation decrease under hyperglycemic conditions, with concomitant inhibition of the effect of insulin on glucose uptake into these cells. Nitric oxide (NO)-dependent regulatory signaling pathways have been shown to be downregulated under diabetic conditions. The present study examined the involvement of the NO synthase (NOS)/NO pathway in the regulation of SIRT1-AMPK signaling and glucose uptake in podocytes. We examined the effects of NOS/NO pathway alterations on SIRT1/AMPK signaling and glucose uptake using pharmacological tools and a small-interfering transfection approach. We also examined the ability of the NOS/NO pathway to protect podocytes against high glucose-induced alterations of SIRT1/AMPK signaling and insulin-dependent glucose uptake. Inhibition of the NOS/NO pathway reduced SIRT1 protein levels and activity, leading to a decrease in AMPK phosphorylation and blockade of the effect of insulin on glucose uptake. Treatment with the NO donor S-nitroso-N-acetylpenicillamine (SNAP) prevented high glucose-induced decreases in SIRT1 and AMPK activity and increased GLUT4 protein expression, thereby improving glucose uptake in podocytes. These findings suggest that inhibition of the NOS/NO pathway may result in alterations of the effects of insulin on glucose uptake in podocytes. In turn, the enhancement of NOS/NO pathway activity may prevent these deleterious effects of high glucose concentrations, thus bidirectionally stimulating the SIRT1-AMPK reciprocal activation loop.
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Affiliation(s)
- Dorota Rogacka
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland; Department of Molecular Biotechnology, Faculty of Chemistry, University of Gdansk, Gdansk, Poland.
| | - Irena Audzeyenka
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland; Department of Molecular Biotechnology, Faculty of Chemistry, University of Gdansk, Gdansk, Poland.
| | - Patrycja Rachubik
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland.
| | - Maria Szrejder
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland.
| | - Marlena Typiak
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland.
| | - Stefan Angielski
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland.
| | - Agnieszka Piwkowska
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Gdansk, Poland; Department of Molecular Biotechnology, Faculty of Chemistry, University of Gdansk, Gdansk, Poland.
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21
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Qabazard B, Yousif M, Mousa A, Phillips OA. GYY4137 attenuates functional impairment of corpus cavernosum and reduces fibrosis in rats with STZ-induced diabetes by inhibiting the TGF-β1/Smad/CTGF pathway. Biomed Pharmacother 2021; 138:111486. [PMID: 34311523 DOI: 10.1016/j.biopha.2021.111486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 10/21/2022] Open
Abstract
Erectile dysfunction (ED) is a common diabetic complication. Recent evidence has illuminated the role of hydrogen sulfide (H2S) as a dynamic mediator of the erection process. H2S is a potent endogenous relaxant gas. It has been shown to relax human and animal penile tissue in vitro and induce erection in animals in vivo. The reported penile expression of H2S-synthesizing enzymes also supports the potential role of the endogenous L-cysteine/H2S pathway in penile homeostasis. Several pathological changes take place in the diabetic penile tissue, including inflammation, oxidative stress, neuropathy and fibrosis of the corpus cavernosum (CC), the major erectile structure of the penis. The present study is experimental and has been performed in the diabetic rat model. The study will investigate the role of H2S as a potential protective mediator against diabetes-induced structural and functional alterations in the CC by examining if it: (1) reduces corporal contraction and/or enhances corporal relaxation following pharmacological stimulation, (2) attenuates fibromuscular changes in diabetic CC, and (3) whether there is a link with H2S plasma/urine level and CC tissue generation, as well as studying the expression of some proteins in the transforming growth factor (TGF)-β1-associated pathway. The major findings of the study reveal that- compared to the nondiabetic controls - the diabetic animals CC showed: (1) augmented contraction and attenuated relaxation in response to phenylephrine and carbachol, respectively, (2) marked fibromuscular degeneration with a significantly lower smooth muscle/collagen ratio and upregulation of TGF-β-1/Smad/CTGF fibrosis signaling pathway, (3) reduced H2S plasma and urinary levels and cavernosal tissue generation. Chronic GYY4137 treatment prevented most of these pathological changes in diabetic CC, thus may be considered a potential new strategy for the prevention and/or treatment of diabetes-induced ED.
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Affiliation(s)
- Bedoor Qabazard
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait.
| | - Mariam Yousif
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Kuwait
| | - Alyaa Mousa
- Department of Anatomy, Faculty of Medicine, Kuwait University, Kuwait
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22
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Gon LM, de Campos CCC, Voris BRI, Passeri LA, Fregonesi A, Riccetto CLZ. A systematic review of penile prosthesis infection and meta-analysis of diabetes mellitus role. BMC Urol 2021; 21:35. [PMID: 33691670 PMCID: PMC7945372 DOI: 10.1186/s12894-020-00730-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 09/25/2020] [Indexed: 01/16/2023] Open
Abstract
Background Infection is the most feared complication of a penile prosthesis. Diabetes mellitus (DM) is widely known to increase the risk of several infections, but its role in the penile prosthesis is still controversial. This systematic review aims to show the contemporary scenario of penile prosthesis infection and present a meta-analysis about DM contribution to penile prosthesis infection. Methods The review was performed with no language or time limitation, including ten databases. The included articles were about the male population who received a penile prosthesis with no model restriction, with a minimum follow up of 1 year, and outcomes adequately reported. Results The mean infection incidence of penile prosthesis ranged from 0.33 to 11.4%. In early 2000, the general incidence of infection was 3 to 5%, then, the introduction of coated materials decreased it to 0.3 to 2.7%. The meta-analysis showed that diabetes mellitus is related to an increased risk of penile prosthesis infection with an odds ratio of 1.53 (95% CI 1.15–2.04). Conclusions Penile prosthesis infection decreased in the last decades but remains a significant cause of reoperation, and it is related to lower prosthesis survival. Meta-analysis concludes that diabetes mellitus is related to a higher risk of penile prosthesis infection.
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Affiliation(s)
- Lucas Mira Gon
- Division of Urology of Department of Surgery, Faculty of Medical Sciences, Hospital de Clinicas, University of Campinas - UNICAMP, Rua Vital Brazil, 250, Campinas, SP, 13083-590, Brazil.
| | - Caio César Citatini de Campos
- Division of Urology of Department of Surgery, Faculty of Medical Sciences, Hospital de Clinicas, University of Campinas - UNICAMP, Rua Vital Brazil, 250, Campinas, SP, 13083-590, Brazil
| | - Brunno Raphael Iamashita Voris
- Division of Urology of Department of Surgery, Faculty of Medical Sciences, Hospital de Clinicas, University of Campinas - UNICAMP, Rua Vital Brazil, 250, Campinas, SP, 13083-590, Brazil
| | - Luís Augusto Passeri
- Division of Urology of Department of Surgery, Faculty of Medical Sciences, Hospital de Clinicas, University of Campinas - UNICAMP, Rua Vital Brazil, 250, Campinas, SP, 13083-590, Brazil
| | - Adriano Fregonesi
- Division of Urology of Department of Surgery, Faculty of Medical Sciences, Hospital de Clinicas, University of Campinas - UNICAMP, Rua Vital Brazil, 250, Campinas, SP, 13083-590, Brazil
| | - Cássio Luís Zanettini Riccetto
- Division of Urology of Department of Surgery, Faculty of Medical Sciences, Hospital de Clinicas, University of Campinas - UNICAMP, Rua Vital Brazil, 250, Campinas, SP, 13083-590, Brazil
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23
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Vasohibin-1 rescues erectile function through up-regulation of angiogenic factors in the diabetic mice. Sci Rep 2021; 11:1114. [PMID: 33441910 PMCID: PMC7807034 DOI: 10.1038/s41598-020-80925-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 12/21/2020] [Indexed: 11/08/2022] Open
Abstract
Neovascularization of the erectile tissue emerges as a beneficial curative approach to treat erectile dysfunction (ED). Here we for the first time report the unexpected role of vasohibin-1 (VASH1), mainly known as an anti-angiogenic factor, in restoring erectile function in diabetic mice. A diabetic patient has lower cavernous VASH1 expression than in the potent man. VASH1 was mainly expressed in endothelial cells. There were significant decreases in cavernous endothelial cell and pericyte contents in VASH1 knockout mice compared with those in wild-type mice, which resulted in impairments in erectile function. Intracavernous injection of VASH1 protein successfully restored erectile function in the diabetic mice (~ 90% of control values). VASH1 protein reinstated endothelial cells, pericytes, and endothelial cell–cell junction proteins and induced phosphorylation of eNOS (Ser1177) in the diabetic mice. The induction of angiogenic factors, such as angiopoietin-1 and vascular endothelial growth factor, is responsible for cavernous angiogenesis and the restoration of erectile function mediated by VASH1. Altogether, these findings suggest that VASH1 is proangiogenic in diabetic penis and is a new potential target for diabetic ED.
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Yin GN, Ock J, Choi MJ, Limanjaya A, Ghatak K, Song KM, Kwon MH, Suh JK, Ryu JK. Gene expression profiling of mouse cavernous endothelial cells for diagnostic targets in diabetes-induced erectile dysfunction. Investig Clin Urol 2021; 62:90-99. [PMID: 33258323 PMCID: PMC7801162 DOI: 10.4111/icu.20200119] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/24/2020] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To investigate potential target genes associated with the diabetic condition in mouse cavernous endothelial cells (MCECs) for the treatment of diabetes-induced erectile dysfunction (ED). MATERIALS AND METHODS Mouse cavernous tissue was embedded into Matrigel, and sprouted cells were subcultivated for other studies. To mimic diabetic conditions, MCECs were exposed to normal-glucose (NG, 5 mmoL) or high-glucose (HG, 30 mmoL) conditions for 72 hours. An RNA-sequencing assay was performed to evaluate gene expression profiling, and RT-PCR was used to validate the sequencing data. RESULTS We isolated MCECs exposed to the two glucose conditions. MCECs showed well-organized tubes and dynamic migration in the NG condition, whereas tube formation and migration were significantly decreased in the HG condition. RNA-sequencing analysis showed that MCECs had different gene profiles in the NG and HG conditions. Among the significantly changed genes, which we classified into 14 major gene categories, we identified that aging-related (9.22%) and angiogenesis-related (9.06%) genes were changed the most. Thirteen genes from the two gene categories showed consistent changes on the RNA-sequencing assay, and these findings were validated by RT-PCR. CONCLUSIONS Our gene expression profiling studies showed that Cyp1a1, Gclm, Igfbp5, Nqo1, Il6, Cxcl5, Olr1, Ctgf, Hbegf, Serpine1, Cyr61, Angptl4, and Loxl2 may play a critical role in diabetes-induced ED through aging and angiogenesis signaling. Additional research is necessary to help us understand the potential mechanisms by which these genes influence diabetes-induced ED.
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Affiliation(s)
- Guo Nan Yin
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Jiyeon Ock
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Min Ji Choi
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Anita Limanjaya
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Kalyan Ghatak
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Kang Moon Song
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Mi Hye Kwon
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Jun Kyu Suh
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea
| | - Ji Kan Ryu
- Department of Urology, National Research Center for Sexual Medicine, Inha University School of Medicine, Incheon, Korea.
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Qin L, Zang M, Xu Y, Zhao R, Wang Y, Mi Y, Mei Y. Chlorogenic Acid Alleviates Hyperglycemia-Induced Cardiac Fibrosis through Activation of the NO/cGMP/PKG Pathway in Cardiac Fibroblasts. Mol Nutr Food Res 2021; 65:e2000810. [PMID: 33200558 DOI: 10.1002/mnfr.202000810] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 10/22/2020] [Indexed: 12/12/2022]
Abstract
SCOPE Hyperglycemia-induced cardiac fibrosis is one of the main causes of diabetic cardiomyopathy (DM). Chlorogenic acid (CGA) found in many foods has excellent hypoglycemic effectiveness, but it is not known whether CGA can improve DM by inhibiting cardiac fibrosis caused by hyperglycemia. METHODS AND RESULTS Type I diabetic mice are induced by streptozotocin, and after treatment with CGA for 12 weeks, cardiac functions and fibrosis are determined. CGA significantly attenuates hyperglycemia-induced cardiac fibrosis and improves cardiac functions. The mechanism of CGA on fibrotic inhibition is further studied by immunofluorescence, western blot and RNA interference technology in vivo and in vitro. The results show CGA exerted its anti-fibrotic effects through activating the cyclic GMP/protein kinase G pathway (cGMP/PKG) to block hyperglycemia-induced nuclear translocation of p-Smad2/3, and then inhibiting pro-fibrotic gene expression in cardiac fibroblasts without depending on its hypoglycemic function. Moreover, the data also revealed that CGA increased cGMP level and activated PKG in cardiac fibroblasts by enhancing endothelial nitric oxide synthase (eNOS) activity and NO production. CONCLUSION Besides lowering blood glucose, CGA also has an independent ability to inhibit cardiac fibrosis. Therefore, long-term consumption of foods rich in CGA for diabetic patients will have great benefits to improve diabetic cardiomyopathy.
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Affiliation(s)
- Linhui Qin
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Mingxi Zang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Yan Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Rongrong Zhao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Yating Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Yang Mi
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Yingwu Mei
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, No.100 Science Avenue, Zhengzhou, Henan, 450001, China
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Song J, Sun T, Tang Z, Ruan Y, Liu K, Rao K, Lan R, Wang S, Wang T, Liu J. Exosomes derived from smooth muscle cells ameliorate diabetes-induced erectile dysfunction by inhibiting fibrosis and modulating the NO/cGMP pathway. J Cell Mol Med 2020; 24:13289-13302. [PMID: 33009701 PMCID: PMC7701535 DOI: 10.1111/jcmm.15946] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/06/2020] [Accepted: 08/30/2020] [Indexed: 12/12/2022] Open
Abstract
Erectile dysfunction (ED) is a major health issue among men with diabetes, and ED induced by diabetes mellitus (DMED) is particularly difficult to treat. Therefore, novel therapeutic approaches for the treatment of DMED are urgently needed. Exosomes, nanosized particles involved in many physiological and pathological processes, may become a promising tool for DMED treatment. In this study, we investigated the therapeutic effect of exosomes derived from corpus cavernosum smooth muscle cells (CCSMC‐EXOs) on erectile function in a rat model of diabetes and compared their effect with that of exosomes derived from mesenchymal stem cells (MSC‐EXOs). We incubated labelled CCSMC‐EXOs and MSC‐EXOs with CCSMCs and then observed uptake of the exosomes at different time points using laser confocal microscopy. CCSMC‐EXOs were more easily taken up by CCSMCs. The peak concentration and retention time of labelled CCSMC‐EXOs and MSC‐EXOs in the corpus cavernosum of DMED rats after intracavernous injection were compared by in vivo imaging techniques. Intracavernous injection of CCSMC‐EXOs was associated with a relatively high peak concentration and long retention time. Our data showed that CCSMC‐EXOs could improve erectile function in DMED rats. Meanwhile, CCSMC‐EXOs could exert antifibrotic effects by increasing the smooth muscle content and reducing collagen deposition. CCSMC‐EXOs also increased the expression of eNOS and nNOS, followed by increased levels of NO and cGMP. These findings initially identify the possible role of CCSMC‐EXOs in ameliorating DMED through inhibiting corporal fibrosis and modulating the NO/cGMP signalling pathway, providing a theoretical basis for a breakthrough in the treatment of DMED.
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Affiliation(s)
- Jingyu Song
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Taotao Sun
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Zhe Tang
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Yajun Ruan
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Kang Liu
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Ke Rao
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Ruzhu Lan
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Shaogang Wang
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Tao Wang
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Jihong Liu
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
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ÖZDEMİR M, TOMRUK C, YİĞİTTÜRK G, EROL V, ÇETİN EÖ, YILDIRIM ŞİMŞİR I, YENİSEY Ç, UYANIKGİL Y, ŞİMŞİR A, MAKAY Ö. Tirotoksikoz nedenli erektil disfonksiyon üzerine sildenafil etkisinin histopatolojik olarak değerlendirilmesi. EGE TIP DERGISI 2020. [DOI: 10.19161/etd.790557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Bahar A, Elyasi F, Moosazadeh M, Afradi G, Kashi Z. Sexual dysfunction in men with type II diabetes. CASPIAN JOURNAL OF INTERNAL MEDICINE 2020; 11:295-303. [PMID: 32874437 PMCID: PMC7442469 DOI: 10.22088/cjim.11.3.295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background: Diabetes mellitus (DM) is a chronic disease inducing short-term and long-term complications including sexual dysfunction (SD) which can consequently reduce patients’ quality of life. Given the limited literature on frequency of SD in men experiencing diabetes in northern Iran, the present study was conducted in the city of Sari in Mazandaran Province, with the aim of investigating SD in men with type II diabetes. Methods: Using a descriptive cross-sectional research design, a total number of 350 male patients suffering from type II diabetes referring to endocrinology clinics in the city of Sari in. The patients were requested to fill out the demographic questionnaire, depression, anxiety and stress scale-21 items (DASS-21) and the 15-question International Index of Erectile Function (IIEF). The data were analyzed using the IBM SPSS statistics software Results: The average period of time in which the patients were facing diabetes was 3.65±5.75 years. The IIEF mean score was equal to 16.98±43.79. Erectile dysfunction (ED) was also evident in 152 patients (62.2%). Moreover, increase in age had significantly decreased the IIEF scores (p<0.001). The chance of being affected with ED among diabetic patients above 50 was 11.21 times as much as those below 50 years of age (odds ratio (OR): 11.21, 95% confidence interval (CI): 6.40-19.62). Conclusion: Concerning the high prevalence rate of ED in men suffering from type II diabetes, doctors are required to directly ask them about sexual disorders in follow-up visits. Furthermore, using screening questionnaires can be helpful in identifying this problem.
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Affiliation(s)
- Adele Bahar
- Diabetes Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Forouzan Elyasi
- Sexual and Reproductive Health Research Center, Addiction Institute, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahmood Moosazadeh
- Health Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ghasem Afradi
- Department of Internal Medicine, School Of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zahra Kashi
- Diabetes Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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Eser N, Yoldaş A, Yigin A, Yumusak N, Bozkurt AS, Kokbas U, Aslan M. The protective effect of Ferula elaeochytris on age-related erectile dysfunction. JOURNAL OF ETHNOPHARMACOLOGY 2020; 258:112921. [PMID: 32387466 DOI: 10.1016/j.jep.2020.112921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 04/10/2020] [Accepted: 04/26/2020] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ferula elaeochytris Korovin (FE) is a perennial medicinal plant of Apiaceae family. Ferula elaeochytris Korovin, known as 'Çakşır' in Anatolia, is widely used as an aphrodisiac as well as antioxidant, anti-inflammatory, and anti-diabetic. AIM OF THE STUDY Erectile dysfunction (ED) is a serious public health problem that has a high prevalence and negatively affects the quality of life in elderly men. In the treatment and prophylaxis of many diseases, because of widely increasing use of plant extracts as therapeutic agents, preclinical studies related to plant extracts are becoming more important by the day. In this study, we aimed to investigate the protective effect of Ferula elaeochytris Korovin (FE) root extract on age-related ED. MATERIALS AND METHODS Seventy-two male Wistar albino rats were equally divided into four groups: 4-month aged rats (Y), 24-month aged rats (AG), and FE-administered (20 and 40 mg/kg/day; oral gavage; over 8 weeks) 24-month aged rats (AG + FE). The measurements included: changes in smooth muscle cells and collagen fibrils, tumor necrosis factor alpha (TNF-α), penile neuronal nitric oxide synthase (nNOS) and endothelial nitric oxide synthase (eNOS) expression, serum testosterone concentrations (ST), neurogenic- and endothelial-dependent relaxations of the corpus cavernosum (CC), intracavernosal pressure/mean arterial pressure (ICP/MAP), area under the curve (total ICP), total antioxidant status (TAS), and total oxidant status (TOS) on corpus cavernosal tissue. RESULTS These results have an important role in the development of ED. ICP/MAP, total ICP, eNOS/nNOS expressions and ST levels increased in AG+40 mg FE group compared to the AG group, whereas TNF-α levels decreased and oxidative and antioxidant parameters balanced. CONCLUSIONS Our findings show that FE may have a useful effect on decelerating the development of age-related ED.
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Affiliation(s)
- Nadire Eser
- Kahramanmaras Sutcu Imam University, Faculty of Medicine, Department of Pharmacology, Kahramanmaras, 46100 Turkey.
| | - Atila Yoldaş
- Kahramanmaras Sutcu Imam University, Faculty of Medicine, Department of Anatomy, Kahramanmaras, 46100 Turkey
| | - Akin Yigin
- Harran University, Faculty of Veterinary, Department of Genetic, Sanlıurfa, 63300, Turkey
| | - Nihat Yumusak
- Harran University, Faculty of Veterinary, Department of Pathology, Sanlıurfa, 63300, Turkey
| | - Ahmet Sarper Bozkurt
- Gaziantep University, Faculty of Medicine, Department of Physiology, Gaziantep, 27470, Turkey
| | - Umut Kokbas
- Cukurova University, Faculty of Medicine, Department of Biochemical, Adana, 01130, Turkey
| | - Mustafa Aslan
- Harran University, Faculty of Education, Division of Biology Education, Sanlıurfa, 63300, Turkey
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La Fuente JM, Sevilleja-Ortiz A, García-Rojo E, El Assar M, Fernández A, Pepe-Cardoso AJ, Martínez-Salamanca JI, Romero-Otero J, Rodríguez-Mañas L, Angulo J. Erectile dysfunction is associated with defective L-cysteine/hydrogen sulfide pathway in human corpus cavernosum and penile arteries. Eur J Pharmacol 2020; 884:173370. [PMID: 32712093 DOI: 10.1016/j.ejphar.2020.173370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 07/09/2020] [Accepted: 07/13/2020] [Indexed: 12/24/2022]
Abstract
H2S signaling was proposed to participate in erectile physiology. L-cysteine (CYS)/H2S pathway stimulation causes cGMP-dependent relaxation of human corpus cavernosum (HCC) and penile arteries (HPRA). The aim was to evaluate the impact of ED on CYS/H2S pathway at functional and molecular level in human penile vascular tissues. NaHS- and CYS-induced responses were evaluated in HCC and HPRA from organ donors without ED (NoED, n = 29) and from ED patients undergoing penile prosthesis insertion (n = 45). cGMP accumulation and cystathionine β-synthase and cystathionine γ-lyase expression were also determined. NaHS-induced relaxations were slightly but significantly impaired in HCC but not in HPRA from ED patients. In contrast, CYS-induced relaxations were markedly impaired in HCC (Emax 67.6 ± 4.9% vs 46.2 ± 4.6%, P < 0.01) and HPRA (Emax 80.8 ± 4.0% vs 48.1 ± 8.6%, P < 0.05) from men with ED. Impairment of CYS-induced responses was observed even after separating diabetic ED patients. In HPRA from ED patients, CYS- but not NaHS-induced vasodilation was significantly associated to endothelial function measured as vasodilatory capacity of acetylcholine (ACh) in these preparations (r2 = 0.481, P < 0.01). Impairment of CYS-induced relaxations was related to significant reduction in CYS-induced accumulation of cGMP in cavernosal tissue. Furthermore, the expression of H2S synthesizing enzymes was significantly reduced in HCC from ED patients with respect to NoED. This was confirmed by immunofluorescence in HCC and HPRA sections. ED involves impairment of CYS/H2S pathway in penile vascular tissues associated with decreased expression of H2S generating enzymes, CBS and CSE. These evidences support a therapeutic potential for modulation of CYS/H2S signaling in the management of ED.
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Affiliation(s)
| | | | - Esther García-Rojo
- Servicio de Urología, Hospital Universitario Doce de Octubre, Madrid, Spain
| | | | - Argentina Fernández
- Servicio de Histología-Investigación, Hospital Universitario Ramón y Cajal - IRYCIS, Madrid, Spain
| | | | | | | | | | - Javier Angulo
- Servicio de Histología-Investigación, Hospital Universitario Ramón y Cajal - IRYCIS, Madrid, Spain.
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Penile implant infection prevention part 1: what is fact and what is fiction? Wilson's Workshop #9. Int J Impot Res 2020; 33:785-792. [PMID: 32694583 DOI: 10.1038/s41443-020-0326-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/22/2020] [Accepted: 06/29/2020] [Indexed: 01/03/2023]
Abstract
Inflatable penile prosthesis (IPP) infections are undeniably devastating for patient and surgeon alike. While less common in this modern era, the landscape of prosthesis infection is shifting. Continued examination of risk factors for infection and re-evaluation of common practices remain critical should we aim to advance the field. Quality research on this topic is limited by several factors, among which small sample size and lack of coordinated effort pose the most precarious of challenges. Nonetheless, careful analysis of available data in conjuncture with judicious utilization of established research from other prosthetic fields can help us better grasp the issue at hand. In this review, we aim to do exactly that-to examine available evidence in an effort to discern fact from fiction. In this first part of the three part series, we aim to summarize our understanding of the pathogenesis behind prosthesis infections, explore known preoperative risk factors, and discuss intraoperative considerations for infection prevention. In the second part of this series, we will examine the game changing effect of infection retardant implant coatings. Part three of the series details postoperative prevention strategies, reviews salvage techniques, and discusses additional key considerations.
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Gur S, Hellstrom WJ. Harnessing Stem Cell Potential for the Treatment of Erectile Function in Men with Diabetes Mellitus: From Preclinical/Clinical Perspectives to Penile Tissue Engineering. Curr Stem Cell Res Ther 2020; 15:308-320. [DOI: 10.2174/1574888x14666190828142045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 07/10/2019] [Accepted: 08/06/2019] [Indexed: 12/20/2022]
Abstract
Background::
According to the World Health Organization, more than 150 million people
are diabetic, and this number will increase twofold by the year 2025. Diabetes-related complications
affect all body organ systems, including the penis. Diabetes-induced Erectile Dysfunction (ED) is
caused by neuropathy of the penile nerves and vasculopathy involving the smooth muscle and endothelium
of the corpus cavernosum.
Objective::
This study aims to present an overview of Stem Cell (SC) research in diabetic animal models
of ED, focusing on the function, signaling, and niches that have a prominent role in the regeneration
of cavernosal cells and penile tissues. We highlight common erectile pathologies caused by diabetes
and review relevant preclinical trials. We also discuss paracrine mechanisms of various SC therapies
involved in the repair of endothelial cells and cavernous nerves in these diabetic models.
Method::
A PubMed search was performed, with dates ranging from inception until Mar 31, 2019.
Results::
This review provides a comprehensive evaluation of the various strategies that have been
investigated for improving SC delivery methods, through preclinical literature and published clinical
trials regarding ED in men with diabetes. Various cell-type applications have benefited erectile function
in diabetic models of ED.
Conclusion::
This review examines the progress and remaining challenges in diabetes-related SC research
regarding ED. Moving forward, it is only with a combined effort of basic biology and translational
work that the potential of SC-based therapies in diabetes in ED can be realized.
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Affiliation(s)
- Serap Gur
- Department of Urology, Tulane University Health Sciences Center, New Orleans, LA, United States
| | - Wayne J.G. Hellstrom
- Department of Urology, Tulane University Health Sciences Center, New Orleans, LA, United States
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Oyeleye SI, Ojo OR, Oboh G. Moringa oleifera leaf and seed inclusive diets influenced the restoration of biochemicals associated with erectile dysfunction in the penile tissue of STZ-induced diabetic male rats treated with/without Acarbose drug. J Food Biochem 2020; 45:e13323. [PMID: 32538504 DOI: 10.1111/jfbc.13323] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/11/2020] [Accepted: 05/20/2020] [Indexed: 01/16/2023]
Abstract
We aim to evaluate the effect of Moringa leaf (ML) and seed (MS) inclusive diets on critical biomarkers [acetylcholinesterase (AChE), monoamine oxidase (MAO), angiotensin-I converting enzyme (ACE), adenosine deiminase (ADA) and arginase activities, and thiobarbituric acid reactive species (TBARS) level] associated with erectile dysfunction (ED) in the penile tissue of diabetic male rats treated with/without Acarbose (ACA). About 60 mg/kg BW streptozotocin (STZ)-induced diabetic rats were fed with ML and MS inclusive diets and cotreated with ACA for 14 days. The result indicated that AChE, MAO, ADA, ACE, and arginase activities, as well as TBARS level were (p < .05) restored in the diabetic rats fed with ML/MS inclusive diets treated with/without ACA compared to the untreated diabetic rats. In conclusion, the combination therapy of ML/MS inclusive diets plus ACA could be explored toward the management of diabetic-induced ED. PRACTICAL APPLICATIONS: We discovered in this study, treatments of diabetic rats with ACA and co-fed with 2% and 4% of Moringa leaf and seed inclusive diets for 14 days, could be of great benefit toward the management of ED caused by diabetes, as evidenced by the expression of some ED-related biomarkers in the penile tissue of diabetes male rats, compared to that of ACA treated alone. Thus, it seems reasonable to explore the effect of food-drug interaction on the large-scale clinical trial to manage diabetes complications, such as the potential effect of Moringa leaf and seed inclusive diets co-administered with ACA for the holistic management of diabetes-induced erectile dysfunction (ED).
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Affiliation(s)
| | - Olajide Raymond Ojo
- Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Ganiyu Oboh
- Department of Biochemistry, Federal University of Technology, Akure, Nigeria
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Song KM, Kim WJ, Choi MJ, Limanjaya A, Ghatak K, Minh NN, Ock J, Yin GN, Hong SS, Suh JK, Ryu JK. Intracavernous delivery of Dickkopf3 gene or peptide rescues erectile function through enhanced cavernous angiogenesis in the diabetic mouse. Andrology 2020; 8:1387-1397. [PMID: 32170840 DOI: 10.1111/andr.12784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 03/11/2020] [Indexed: 01/26/2023]
Abstract
BACKGROUND Severe peripheral angiopathy in patients with diabetes is a major contributing factor for low response rate to phosphodiesterase-5 inhibitors. OBJECTIVES To examine whether and how Dickkopf3 (DKK3), a secreted modulator of the Wnt pathway that known to be involved in endothelial cell repair and vascular progenitor cell migration, restores erectile function in diabetic mice. METHODS Eight-week-old C57BL/6 mice received intraperitoneal injections of streptozotocin (50 mg/kg for 5 days). Eight weeks after the diabetes was induced, the efficacy of DKK3 was determined by three independent experiments: experiment 1 (DKK3 peptide [5 μg in 20 μL PBS]); experiment 2 (DKK3 plasmid DNA with electroporation [10, 40, or 100 μg in 20 μL PBS, respectively]); and experiment 3 (DKK3 adenovirus [1 × 107 , 1 × 108 , 1 × 109 virus particles per 20 μL, respectively]). Erectile function was measured by electrical stimulation of the cavernous nerve one week (for peptide) or two weeks (for genes) after treatment. The angiogenic activity of DKK3 was determined in diabetic penis in vivo and in primary cultured mouse cavernous endothelial cells (MCECs) in vitro. RESULTS The cavernous expression of DKK3 protein was significantly lower in the diabetic mice than in controls. DKK3 peptide or adenovirus significantly improved erectile function in diabetic mice (70% of the control values). DKK3 adenovirus profoundly restored cavernous endothelial cell and pericyte contents and increased endothelial junction proteins in diabetic mice in vivo. DKK3 peptide induced upregulation of angiogenic factors (angiopoietin-1, vascular endothelial growth factor, and basic fibroblast growth factor) and accelerated tube formation in MCECs cultivated under the high-glucose condition in vitro. CONCLUSION DKK3 restored cavernous vascular integrity and improved erectile function in diabetic mice. Therapeutic cavernous angiogenesis by the use of DKK3 will be a promising therapeutic strategy to treat diabetic erectile dysfunction.
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Affiliation(s)
- Kang-Moon Song
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Woo-Jean Kim
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea.,Department of Anatomy, Kosin University College of Medicine, Busan, Korea
| | - Min-Ji Choi
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Anita Limanjaya
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Kalyan Ghatak
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Nguyen Nhat Minh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Jiyeon Ock
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Soon-Sun Hong
- Department of Drug Development, Inha University School of Medicine, Incheon, Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea.,Department of Urology, Inha University Hospital, Incheon, Korea
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Human Tissue Kallikrein 1 Improves Erectile Dysfunction of Streptozotocin-Induced Diabetic Rats by Inhibition of Excessive Oxidative Stress and Activation of the PI3K/AKT/eNOS Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6834236. [PMID: 32190176 PMCID: PMC7066404 DOI: 10.1155/2020/6834236] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 02/02/2020] [Accepted: 02/08/2020] [Indexed: 12/12/2022]
Abstract
Objective To investigate the protective effects and mechanisms of human tissue kallikrein 1 (hKLK1) on type 1 diabetes mellitus- (DM-) induced erectile dysfunction in rats. Materials and Methods. The homozygous transgenic rats (TGR) harboring the hKLK1 gene and age-matched wild-type Sprague Dawley rats (WTR) were involved, and intraperitoneal injection of streptozotocin was utilized to induce diabetes in rats. Forty-eight-week-old male rats were randomly divided into a WTR group, TGR group, diabetic WTR group (WTDM), diabetic TGR group (TGDM), and TGDM with HOE140 group (TGDMH), with eight rats in each group. Twelve weeks later, the erectile response of all rats was detected by cavernous nerve electric stimulation, and corpus cavernosums were harvested to evaluate the levels of cavernous oxidative stress (OS), apoptosis, fibrosis, and involved pathways. Moreover, cavernous smooth muscle cells (CSMC) and endothelial cells (EC) were primarily isolated to build a coculture system for a series of in vitro verification. Results The hKLK1 gene and age-matched wild-type Sprague Dawley rats (WTR) were involved, and intraperitoneal injection of streptozotocin was utilized to induce diabetes in rats. Forty-eight-week-old male rats were randomly divided into a WTR group, TGR group, diabetic WTR group (WTDM), diabetic TGR group (TGDM), and TGDM with HOE140 group (TGDMH), with eight rats in each group. Twelve weeks later, the erectile response of all rats was detected by cavernous nerve electric stimulation, and corpus cavernosums were harvested to evaluate the levels of cavernous oxidative stress (OS), apoptosis, fibrosis, and involved pathways. Moreover, cavernous smooth muscle cells (CSMC) and endothelial cells (EC) were primarily isolated to build a coculture system for a series of Conclusions hKLK1 preserves erectile function of DM rats through its antitissue excessive OS, apoptosis, and fibrosis effects, as well as activation of the PI3K/AKT/eNOS/cGMP pathway in the penis. Moreover, hKLK1 promotes relaxation and prevents high glucose-induced injuries of CSMC mediated by EC-CSMC crosstalk.
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Adebayo AA, Oboh G, Ademosun AO. Almond-supplemented diet improves sexual functions beyond Phosphodiesterase-5 inhibition in diabetic male rats. Heliyon 2019; 5:e03035. [PMID: 31890965 PMCID: PMC6928307 DOI: 10.1016/j.heliyon.2019.e03035] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/14/2019] [Accepted: 12/10/2019] [Indexed: 12/31/2022] Open
Abstract
Hyperglycemia, an important feature of diabetes, can cause oxidative stress, which is associated with varieties of diabetic complications including erectile dysfunction. Therefore, this study sought to investigate the effect of almond-supplemented diet on some biochemical indices relevant to erection in diabetic male rats. Forty-two male rats were divided into two groups: A (n = 6) and B (n = 36). Diabetes was induced in Group B via injection of a single dose of STZ (50 mg/kg) intraperitoneally and confirmed 72 h after induction. Diabetic rats (blood glucose ≥250 mg/dL) were subsequently divided into six groups (n = 6). Fourteen days after confirmation of diabetes, rats were fed with diets containing almond drupe and seeds (10 and 20% inclusion) for fourteen days. The effects of the diets on blood glucose, sexual behavior, sexual hormones, phosphodiesterase-5 activity, nitric oxide, H2S, and AGEs levels were evaluated. Significant increase in blood glucose level, phosphodiesterase-5 activity, and glycated hemoglobin was observed in diabetic rats. Furthermore, diabetes caused a significant decrease in nitric oxide, H2S, sexual hormones (testosterone, follicle-stimulating hormone and luteinizing hormone) levels, and sexual behavioral indices. However, treatment with diets supplemented with almond drupe and seeds significantly reversed these effects in diabetic rats. Findings in this study revealed that almond-supplemented diets enhance some important biomarkers relevant to erection in diabetic rats. Thus, dietary inclusion of almond (drupe and seeds) could serve as a cheap and readily available nutraceutical in the management of erectile dysfunction associated with diabetes.
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La Fuente JM, Fernández A, Pepe-Cardoso AJ, Martínez-Salamanca JI, Louro N, Angulo J. L-cysteine/hydrogen sulfide pathway induces cGMP-dependent relaxation of corpus cavernosum and penile arteries from patients with erectile dysfunction and improves arterial vasodilation induced by PDE5 inhibition. Eur J Pharmacol 2019; 863:172675. [PMID: 31542487 DOI: 10.1016/j.ejphar.2019.172675] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/10/2019] [Accepted: 09/18/2019] [Indexed: 02/06/2023]
Abstract
The aim was to evaluate and characterize H2S-induced relaxation of human corpus cavernosum (HCC) and penile resistance arteries (HPRA) from patients with erectile dysfunction (ED). HCC and HPRA were obtained from men with ED at the time of penile prosthesis insertion. H2S-mediated relaxations were evaluated by exposing these tissues to the stable analogue, NaHS, and to the precursor of H2S, L-cysteine (CYS). The effects of NaHS and CYS were also evaluated on cGMP accumulation in HCC and on acetylcholine- and sildenafil-mediated relaxations in HCC and HPRA. NaHS consistently relaxed HPRA and HCC and more potently than human prostate and bladder. NaHS-induced relaxations in HCC and HPRA were unaffected by the ATP-sensitive K+-channel blocker, glibenclamide or the NO synthase inhibitor, L-NAME, slightly reduced by the Ca2+-activated K+-channel blocker, tetraethylammonium, and markedly inhibited by the soluble guanylyl cyclase inhibitor, ODQ. NaHS caused a cGMP increase in HCC that was inhibited by ODQ. CYS produced relaxations of HCC and HPRA that were sensitive to ODQ and to inhibition of the H2S synthesizing enzymes, cystathionine γ-lyase (CSE) and cystathionine β-synthase (CBS). CYS also increased cGMP in HCC. In contrast to NaHS, CYS-induced relaxations were prevented by endothelium removal in HPRA. Only in HPRA, treatment with CYS (30 μM) potentiated acetylcholine- and sildenafil-induced relaxations. This effect was prevented by CSE/CBS inhibition and by removing the endothelium. Exogenous and endogenous H2S relaxes HCC and HPRA from ED patients through cGMP accumulation and potentiates vasodilatory capacity of PDE5 inhibition, supporting the therapeutic potential of modulating H2S pathway.
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Affiliation(s)
| | - Argentina Fernández
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (UFV-IRYCIS), Hospital Universitario Ramón y Cajal, Madrid, Spain
| | | | | | - Nuno Louro
- Serviço de Urologia, Hospital Santo Antonio, Porto, Portugal
| | - Javier Angulo
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (UFV-IRYCIS), Hospital Universitario Ramón y Cajal, Madrid, Spain.
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Angulo J, El Assar M, Sevilleja-Ortiz A, Fernández A, Sánchez-Ferrer A, Romero-Otero J, Martínez-Salamanca JI, La Fuente JM, Rodríguez-Mañas L. Short-term pharmacological activation of Nrf2 ameliorates vascular dysfunction in aged rats and in pathological human vasculature. A potential target for therapeutic intervention. Redox Biol 2019; 26:101271. [PMID: 31302408 PMCID: PMC6626891 DOI: 10.1016/j.redox.2019.101271] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/28/2019] [Accepted: 07/04/2019] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress contributes to endothelial dysfunction, a key step in cardiovascular disease development. Ageing-related vascular dysfunction involves defective antioxidant response. Nuclear factor erythroid 2-like-2 (Nrf2), orchestrates cellular response to oxidative stress. We evaluated the impact of Nrf2-activation on endothelium-dependent and H2O2-mediated vasodilations in: aorta (RA), mesenteric artery (RMA), coronary artery (RCA) and corpus cavernosum (RCC) from ageing rats and in human penile arteries (HPRA) and corpus cavernosum (HCC) from erectile dysfunction (ED) patients. Relaxant responses were evaluated in organ chambers and wire myographs. Nrf2 content and heme oxygenase-1 (HO-1) were determined by ELISA. Superoxide and Nrf2 were detected by immunofluorescence. Pharmacological activation of Nrf2 with sulforaphane (SFN) improved NO- and endothelium-derived hyperpolarizing factor-mediated endothelium-dependent vasodilation and H2O2-induced relaxation in vascular beds from aging rats. SFN-induced effects were associated with increased Nrf2 (RMA, RCA) and reduced superoxide detection in RCA. Improvement of vascular function was confirmed in HPRA and HCC from ED patients and mimicked by another Nrf2 activator, oltipraz. Nrf2 increase and superoxide reduction together with HO-1 increase by Nrf2 activation was evidenced in HCC from ED patients. PDE5 inhibitor-induced relaxations of HPRA and HCC from ED patients were enhanced by SFN. Nrf2 short-term pharmacological activation attenuates age-related impairment of endothelium-dependent and reactive oxygen species (ROS)-induced vasodilation in different rat and human vascular territories by upregulation of Nrf2-related signaling and decreased oxidative stress. In ED patients target tissues, Nrf2 potentiates the functional effect of ED conventional pharmacological therapy suggesting potential therapeutic implication.
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Affiliation(s)
- Javier Angulo
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Ramón y Cajal, Madrid, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - Mariam El Assar
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain; Fundación para la Investigación Biomédica del Hospital Universitario de Getafe, Getafe, Spain
| | - Alejandro Sevilleja-Ortiz
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Ramón y Cajal, Madrid, Spain
| | - Argentina Fernández
- Servicio de Histología-Investigación, Unidad de Investigación Traslacional en Cardiología (IRYCIS-UFV), Hospital Ramón y Cajal, Madrid, Spain
| | - Alberto Sánchez-Ferrer
- Fundación para la Investigación Biomédica del Hospital Universitario de Getafe, Getafe, Spain
| | | | | | | | - Leocadio Rodríguez-Mañas
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain; Fundación para la Investigación Biomédica del Hospital Universitario de Getafe, Getafe, Spain; Servicio de Geriatría, Hospital Universitario de Getafe, Getafe, Spain.
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Eucommia ulmoides Oliv. Leaf Extract Improves Erectile Dysfunction in Streptozotocin-Induced Diabetic Rats by Protecting Endothelial Function and Ameliorating Hypothalamic-Pituitary-Gonadal Axis Function. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:1782953. [PMID: 31467570 PMCID: PMC6699366 DOI: 10.1155/2019/1782953] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/03/2019] [Indexed: 01/02/2023]
Abstract
Erectile dysfunction (ED) is a major complication of diabetes mellitus. Eucommia ulmoides Oliv. is used as a traditional medicine for male impotence, but no systematic study has examined its effect on diabetes-associated ED. In this study, we investigated the effects of Eucommia ulmoides Oliv. leaf extract (EULE) on restoring erectile function in streptozotocin (STZ)-induced diabetic rats model. After 16 weeks of treatment, EULE administration had significantly increased intracavernosal pressure, nitric oxide (NO) levels, and cyclic guanosine monophosphate (cGMP) concentrations. Serum superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) levels were markedly higher and serum malondialdehyde (MDA) levels were lower in the EULE-treated groups than in the diabetic model group. EULE restored NO biosynthesis by significantly increasing protein kinase B (Akt) and endothelial NO synthase (eNOS) activation. Furthermore, EULE is likely to benefit the hypothalamic-pituitary-gonadal (HPG) axis, as it increased gonadotropin-releasing hormone (GnRH), follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone (T) concentrations as well as hormone receptors Gnrhr, Fshr, and Lhr expression levels. Hence, EULE attenuates oxidative stress, increases NO production, and activates the Akt-eNOS pathway to restore endothelial function; moreover, EULE enhances the HPG axis to improve erectile function. These results suggest that EULE may represent a new therapeutic avenue for diabetes-associated ED.
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Huo W, Hou Y, Li Y, Li H. Downregulated lncRNA-MIAT confers protection against erectile dysfunction by downregulating lipoprotein lipase via activation of miR-328a-5p in diabetic rats. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1226-1240. [DOI: 10.1016/j.bbadis.2019.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 12/13/2018] [Accepted: 01/15/2019] [Indexed: 12/14/2022]
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Umbelliferone isolated from Zosima absinthifolia roots partially restored erectile dysfunction in streptozotocin-induced diabetic rats. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02359-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Cui K, Tang Z, Li CC, Wang T, Rao K, Wang SG, Liu JH, Chen Z. Lipoxin A4 improves erectile dysfunction in rats with type I diabetes by inhibiting oxidative stress and corporal fibrosis. Asian J Androl 2019; 20:166-172. [PMID: 29111541 PMCID: PMC5858102 DOI: 10.4103/aja.aja_49_17] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Previous studies have shown that oxidative stress and corporal fibrosis in penile tissues of rats were key pathological factors of erectile dysfunction induced by diabetic mellitus (DMED). Lipoxin A4 (LXA4) was reported to inhibit oxidative stress and fibrosis diseases, while whether it could exert a protective role on erectile function was not clear. Type I diabetic mellitus (DM) was induced in thirty male 10-week-old Sprague-Dawley rats using streptozotocin. Ten weeks later, twenty-two rats with DMED confirmed by an apomorphine test were divided into two groups: the DMED group (n = 11) and the DMED + LXA4 group (n = 11; LXA4 injection daily for 4 weeks). In addition, another ten age-matched rats formed the Control group. We found that erectile function was significantly impaired in the DMED group compared with the Control group, but was improved in the DMED + LXA4 group. Similarly, the over-activated oxidative stress and impaired endothelial function in the DMED group were both improved in the DMED + LXA4 group. Moreover, the DMED group showed serious corporal fibrosis, which was also inhibited by the treatment of LXA4 in the DMED + LXA4 group. Taken together, LXA4 could exert an inhibition role on oxidative stress and fibrosis to improve DMED effectively.
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Affiliation(s)
- Kai Cui
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhe Tang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chuan-Chang Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ke Rao
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shao-Gang Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ji-Hong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhong Chen
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Alleviation of impaired reactivity in the corpus cavernosum of STZ-diabetic rats by slow-release H2S donor GYY4137. Int J Impot Res 2018; 31:111-118. [DOI: 10.1038/s41443-018-0083-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 08/19/2018] [Accepted: 09/20/2018] [Indexed: 11/08/2022]
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Xu Y, Zhang Y, Yang Y, Liu L, Chen Y, Liu X. Prevalence and correlates of erectile dysfunction in type 2 diabetic men: a population-based cross-sectional study in Chinese men. Int J Impot Res 2018; 31:9-14. [DOI: 10.1038/s41443-018-0060-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 06/01/2018] [Accepted: 07/23/2018] [Indexed: 12/30/2022]
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Wu Z, Wang H, Ni F, Jiang X, Xu Z, Liu C, Cai Y, Fu H, Luo J, Chen W, Chen B, Yu Z. Islet transplantation improved penile tissue fibrosis in a rat model of type 1 diabetes. BMC Endocr Disord 2018; 18:49. [PMID: 30053902 PMCID: PMC6064149 DOI: 10.1186/s12902-018-0276-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 07/06/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Glycaemic control is one of the most effective strategies for the treatment of diabetes-related erectile dysfunction (DMED). Compared to conventional anti-diabetic drugs and insulin, islet transplantation is more effective in the treatment of diabetic complications. The aim of this study was to investigate the efficacy of islet transplantation for reversing advanced-stage DMED in rats and to observe its influence on corpus cavernosum fibrosis. METHODS Wistar rats were intraperitoneally injected with streptozotocin to establish a diabetes model. After 12 weeks, the rats were divided into 4 groups: diabetic, insulin, islet transplantation, and normal control. Following supplementation, the changes in blood glucose and weight were determined sequentially. Penile erectile function was evaluated by apomorphine experiments in the fourth week, and the penile corpus cavernosum was also collected for assessment by Masson staining, immunohistochemistry and Western blot to observe the spongy tissue and the related cellular changes at the molecular level. RESULTS Islet transplantation significantly ameliorated penile erectile function in advanced-stage diabetic rats. The ratio of corpus cavernosum smooth muscle cells to fibroblasts and the expression level of α-SMA in the islet transplantation group were significantly higher than those in the diabetic and insulin groups. In addition, the expression levels of TGF-β1, p-Samd2, and connective tissue growth factor (CTGF) in the islet transplantation and insulin groups were much lower than those in the diabetic group, while those in the islet transplantation group were significantly lower than those in the insulin group. CONCLUSIONS Our findings strongly suggest that islet transplantation can promote the regeneration of smooth muscle cells and ameliorate corpus cavernosum fibrosis to restore its normal structure in advanced-stage diabetic rats. The possible mechanism of ameliorating corpus cavernosum fibrosis by islet transplantation may be associated with improvement of the hyperglycaemic status in diabetic rats, thereby inhibiting the TGF-β1/Samd2/CTGF pathway.
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Affiliation(s)
- Zhigang Wu
- Department of Andrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Hongwei Wang
- Hepatobiliary and pancreatic surgery laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Fubiao Ni
- Hepatobiliary and pancreatic surgery laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Xuan Jiang
- School of Pharmacy, Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Ziqiang Xu
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Chengyang Liu
- Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104-5160 USA
| | - Yong Cai
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Hongxing Fu
- School of Pharmacy, Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Jiao Luo
- Hepatobiliary and pancreatic surgery laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Wenwei Chen
- Department of Urology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Bicheng Chen
- Hepatobiliary and pancreatic surgery laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
| | - Zhixian Yu
- Department of Urology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province China
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Yin GN, Jin HR, Choi MJ, Limanjaya A, Ghatak K, Minh NN, Ock J, Kwon MH, Song KM, Park HJ, Kim HM, Kwon YG, Ryu JK, Suh JK. Pericyte-Derived Dickkopf2 Regenerates Damaged Penile Neurovasculature Through an Angiopoietin-1-Tie2 Pathway. Diabetes 2018; 67:1149-1161. [PMID: 29559443 DOI: 10.2337/db17-0833] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 03/02/2018] [Indexed: 11/13/2022]
Abstract
Penile erection requires well-coordinated interactions between vascular and nervous systems. Penile neurovascular dysfunction is a major cause of erectile dysfunction (ED) in patients with diabetes, which causes poor response to oral phosphodiesterase-5 inhibitors. Dickkopf2 (DKK2), a Wnt antagonist, is known to promote angiogenesis. Here, using DKK2-Tg mice or DKK2 protein administration, we demonstrate that the overexpression of DKK2 in diabetic mice enhances penile angiogenesis and neural regeneration and restores erectile function. Transcriptome analysis revealed that angiopoietin-1 and angiopoietin-2 are target genes for DKK2. Using an endothelial cell-pericyte coculture system and ex vivo neurite sprouting assay, we found that DKK2-mediated juxtacrine signaling in pericyte-endothelial cell interactions promotes angiogenesis and neural regeneration through an angiopoietin-1-Tie2 pathway, rescuing erectile function in diabetic mice. The dual angiogenic and neurotrophic effects of DKK2, especially as a therapeutic protein, will open new avenues to treating diabetic ED.
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MESH Headings
- Adult
- Angiopoietin-1/agonists
- Angiopoietin-1/genetics
- Angiopoietin-1/metabolism
- Animals
- Cell Line, Tumor
- Cells, Cultured
- Coculture Techniques
- Crosses, Genetic
- Diabetes Mellitus, Type 1/complications
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Diabetic Angiopathies/drug therapy
- Diabetic Angiopathies/metabolism
- Diabetic Angiopathies/pathology
- Diabetic Nephropathies/drug therapy
- Diabetic Nephropathies/metabolism
- Diabetic Nephropathies/pathology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/innervation
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/pathology
- Erectile Dysfunction/complications
- Erectile Dysfunction/drug therapy
- Erectile Dysfunction/metabolism
- Erectile Dysfunction/pathology
- Humans
- Intercellular Signaling Peptides and Proteins/chemistry
- Intercellular Signaling Peptides and Proteins/genetics
- Intercellular Signaling Peptides and Proteins/metabolism
- Intercellular Signaling Peptides and Proteins/therapeutic use
- Male
- Mice, Inbred C57BL
- Mice, Transgenic
- Penis/blood supply
- Penis/innervation
- Penis/metabolism
- Penis/pathology
- Pericytes/drug effects
- Pericytes/metabolism
- Pericytes/pathology
- Receptor, TIE-2/agonists
- Receptor, TIE-2/metabolism
- Wnt Signaling Pathway
- Young Adult
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Affiliation(s)
- Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Hai-Rong Jin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
- Department of Urology, Yuhuangding Hospital, Yantai, Shandong Province, People's Republic of China
| | - Min-Ji Choi
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Anita Limanjaya
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Kalyan Ghatak
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Nguyen Nhat Minh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Jiyeon Ock
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Mi-Hye Kwon
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Kang-Moon Song
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Heon Joo Park
- Hypoxia-Related Disease Research Center, Inha University College of Medicine, Incheon, Republic of Korea
| | - Ho Min Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Young-Guen Kwon
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
- Inha Research Institute for Medical Sciences, Inha University College of Medicine, Incheon, Republic of Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
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Dayar E, Kara E, Yetik-Anacak G, Hocaoglu N, Bozkurt O, Gidener S, Durmus N. Do penile haemodynamics change in the presence of hydrogen sulphide (H2S) donor in metabolic syndrome-induced erectile dysfunction? Andrologia 2017; 50. [DOI: 10.1111/and.12885] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2017] [Indexed: 12/30/2022] Open
Affiliation(s)
- E. Dayar
- Department of Pharmacology; Faculty of Medicine; Dokuz Eylül University; Izmir Turkey
| | - E. Kara
- Department of Pharmacology; Faculty of Medicine; Dokuz Eylül University; Izmir Turkey
| | - G. Yetik-Anacak
- Department of Pharmacology; Faculty of Medicine; Ege University; Izmir Turkey
| | - N. Hocaoglu
- Department of Pharmacology; Faculty of Medicine; Dokuz Eylül University; Izmir Turkey
| | - O. Bozkurt
- Department of Urology; Faculty of Medicine; Dokuz Eylül University; Izmir Turkey
| | - S. Gidener
- Department of Pharmacology; Faculty of Medicine; Dokuz Eylül University; Izmir Turkey
| | - N. Durmus
- Department of Pharmacology; Faculty of Medicine; Dokuz Eylül University; Izmir Turkey
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49
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Yin GN, Park SH, Choi MJ, Limanjaya A, Ghatak K, Minh NN, Ock J, Song KM, Ryu JK, Suh JK. Penile neurovascular structure revisited: immunohistochemical studies with three-dimensional reconstruction. Andrology 2017; 5:964-970. [PMID: 28805947 DOI: 10.1111/andr.12387] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 04/21/2017] [Accepted: 05/02/2017] [Indexed: 12/11/2022]
Abstract
Penile erection is a neurovascular phenomenon that requires well coordinated and functional interaction between penile vascular and nervous systems. In order to provide a useful tool to examine pathologic changes in the erectile tissue, mainly focusing on penile neurovascular dysfunction, we established the technique to determine the differential distribution of endothelial cells, smooth muscle cells, pericytes, and nerve fibers in the mouse penis using immunohistochemical staining with three-dimensional reconstruction. Immunofluorescent staining of penile tissue was performed with antibodies against CD31 (an endothelial cell marker), smooth muscle α -actin (SMA, a smooth muscle cell marker), NG2 (a pericyte marker), or βIII-tubulin (a neuronal marker). We reconstructed three-dimensional images of penile vascular or neurovascular system from stacks of two-dimensional images, which allows volume rendering and provides reliable anatomic information. CD31-positive endothelial cells, SMA-positive smooth muscle cells, and NG2-positive pericytes were evenly distributed and composed sinusoidal or venous wall. However, the endothelial layer of the cavernous artery or dorsal artery was mainly covered with smooth muscle cells and rarely associated with pericytes. The reconstructed three-dimensional images clearly visualized typical wavy appearance of nerve fibers that evenly innervate to cavernous sinusoids, cavernous artery, dorsal vein, and dorsal artery. We observed a significant decrease in CD31-positive endothelial cells, NG2-positive pericytes, and βIII-tubulin-positive nerve fibers in the penis of diabetic mice compared with those in normal condition. Our protocol for immunofluorescent staining with three-dimensional reconstruction will allow a better understanding of the penile neurovascular anatomy and may constitute a standard technique to determine the efficacy of candidate therapeutics targeting therapeutic angiogenesis or neural regeneration.
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Affiliation(s)
- G N Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - S-H Park
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - M-J Choi
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - A Limanjaya
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - K Ghatak
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - N N Minh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - J Ock
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - K-M Song
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - J-K Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea.,Inha Research Institute for Medical Sciences, Inha University School of Medicine, Incheon, Korea
| | - J-K Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Korea
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The Effect of microRNA-328 antagomir on erectile dysfunction in streptozotocin-induced diabetic rats. Biomed Pharmacother 2017; 92:888-895. [PMID: 28599252 DOI: 10.1016/j.biopha.2017.05.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/03/2017] [Accepted: 05/15/2017] [Indexed: 12/20/2022] Open
Abstract
The study aimed at exploring the effect of microRNA-328 (miR-328) antagomir on erectile dysfunction (ED) in streptozotocin (STZ)-induced diabetic rats. A total of 120 male Sprague-Dawley (SD) rats were selected for this study. Fifteen rats were assigned as the diabetic control group and 75 out of the remaining rats (105 diabetic rat models) were divided into five groups with 15 rats in each group: diabetic ED, diabetic ED+negative control (NC), diabetic ED+miR-328 antagomir, diabetic ED+sildenafil and diabetic ED+miR-328 antagomir+sildenafil groups. The cGMP/AGEs production levels were measured using enzyme-linked immunosorbent assay (ELISA) test. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting were conducted for testing the expression level of miR-328, transcription and protein levels of endothelial nitric oxide synthase (eNOS) and dickkopf-3 (DKK3). The diabetic ED+miR-328 antagomir group had better erectile function, lower cGMP production level, transcription and protein levels of eNOS and DKK3 but higher AGEs production level than the diabetic control group. The diabetic control group showed higher cGMP production level transcription and protein levels of eNOS and DKK3 and lower production levels of AGEs and miR-328 than the diabetic ED and diabetic ED+NC groups. Our results indicated that miR-328 antagomir could improve ED in STZ-induced diabetic rats by regulating cGMP and AGEs.
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