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Fujita N, Iwane T, Tamura Y, Okamoto T, Yamamoto H, Hatakeyama S, Yoneyama T, Hashimoto Y, Kobayashi W, Ohyama C. Associations of remaining teeth number, periodontal disease, and occlusal support status with erectile dysfunction in community-dwelling men. Int J Urol 2024; 31:869-875. [PMID: 38695270 DOI: 10.1111/iju.15472] [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: 01/14/2024] [Accepted: 04/15/2024] [Indexed: 08/02/2024]
Abstract
OBJECTIVES Several systematic reviews and meta-analyses have reported positive relationships between erectile dysfunction (ED) and periodontal disease. However, no study has evaluated the relationships of occlusal support status and the number of remaining teeth with ED. The aim of the present study was to investigate the relationships between ED and the remaining teeth number, periodontal disease, and occlusal support status. METHODS This study included 400 community-dwelling men. Periodontal health status and occlusal support condition were evaluated using the Community Periodontal Index (CPI) and Eichner classification. Multivariable analyses were performed to evaluate the relationships between ED and the remaining teeth number, periodontal disease, and occlusal support status. RESULTS The median age was 53 years. Of the 400 men, 333 (83%) were classified into ED group. In univariable analyses, remaining teeth number, CPI score, and Eichner classification were significantly associated with ED. In multivariable analyses, the remaining teeth number (odds ratio [OR]: 0.907, p = 0.114) and CPI score (OR: 0.978, p = 0.864) were not significantly associated with ED, whereas the Eichner classification was independently and significantly associated with ED (OR: 3.490, p = 0.042). CONCLUSIONS Poor occlusal support status was significantly associated with ED in community-dwelling men, as opposed to remaining teeth number and periodontal health status.
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Affiliation(s)
- Naoki Fujita
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takuro Iwane
- Research Institute of Health Innovation, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yoshihiro Tamura
- Department of Dentistry and Oral Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Teppei Okamoto
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hayato Yamamoto
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shingo Hatakeyama
- Department of Advanced Blood Purification Therapy, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takahiro Yoneyama
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yasuhiro Hashimoto
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Wataru Kobayashi
- Department of Dentistry and Oral Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Chikara Ohyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Advanced Blood Purification Therapy, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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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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3
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Xu Z, Chu W, Lei X, Chen C. Higher oxidative balance score was associated with decreased risk of erectile dysfunction: a population-based study. Nutr J 2024; 23:54. [PMID: 38760760 PMCID: PMC11102141 DOI: 10.1186/s12937-024-00956-y] [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: 03/17/2023] [Accepted: 05/02/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Erectile dysfunction (ED) is a prevalent condition that is thought to be significantly impacted by oxidative stress. The oxidative balance score (OBS) has been built to characterize the state of antioxidant/pro-oxidant balance. There is less known regarding the relationship of OBS with ED. METHODS This study conducted cross-sectional analyses on 1860 males who participated in the National Health and Nutrition Examination Survey (NHANES) from 2001 to 2004. OBS was constructed by the 16 dietary components and 4 lifestyle factors. Self-reported ED was defined as men who indicated that they "never" or "sometimes" could achieve or keeping an erection adequate for satisfactory intercourse. Multivariate logistic regression models were applied to examine the association between OBS and the risk of ED. RESULTS Among 1860 participants, the median OBS was 20 (IQR 15-26), and OBS was lower in males with ED vs. those without ED (P = 0.001). The results of our analyses indicated a negative correlation between OBS and ED among male subjects. Specifically, each one-unit increase in the continuous OBS was relate to 3% reduction in the odds of ED after full adjustment. Moreover, when extreme OBS quartiles were compared, the adjusted odds ratio (95% confidence interval) for the 4th OBS category was 0.53 (0.32 to 0.88) after full adjustment (P for trend < 0.05). There was also statistical significance in the relationships between dietary/lifestyle OBS with ED, and the association between lifestyle OBS and ED may be even tighter. For each unit increase in lifestyle OBS, the odds of ED decreased by 11% after full adjustment. CONCLUSION Higher OBS was associated with reduced risk of ED in U.S. males. These findings suggested that adopting an antioxidant-rich diet and engaging in antioxidant-promoting lifestyle behaviors may contribute to a lower incidence of ED. These results provided recommendations for a comprehensive dietary and lifestyle antioxidants for ED patients.
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Affiliation(s)
- Zhixiao Xu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Weiwei Chu
- Department of Pulmonary and Critical Care Medicine, The Lu 'an People's Hospital of Anhui Province, The Lu 'an Hospital Affiliated to Anhui Medical University, Lu 'an, China
| | - Xiong Lei
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chengshui Chen
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
- Key Laboratory of Interventional Pulmonology of Zhejiang Province, Wenzhou, China.
- Zhejiang Province Engineering Research Center for Endoscope Instruments and Technology Development, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China.
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4
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Besong EE, Ashonibare PJ, Akhigbe TM, Obimma JN, Akhigbe RE. Sodium acetate abates lead-induced sexual dysfunction by upregulating testosterone-dependent eNOS/NO/cGMP signaling and activating Nrf2/HO-1 in male Wistar rat. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:1233-1243. [PMID: 37658211 DOI: 10.1007/s00210-023-02696-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 08/25/2023] [Indexed: 09/03/2023]
Abstract
Oxidative stress has been linked with lead toxicity, including lead-induced sexual dysfunction. On the contrary, sodium acetate has been proven to exert antioxidant activity. However, the effect of sodium acetate on lead-induced sexual dysfunction has not been fully explored. This study investigated the effect of sodium acetate on lead-induced sexual dysfunction, exploring the involvement of testosterone, eNOS/NO/cGMP, and Nrf2/HO-1 signaling. Twenty male Wistar rats with similar weights were randomly assigned into four groups (n = 5 rats/group) after two weeks of acclimatization. Animals were vehicle-treated (0.5 ml/day of distilled water, per os), acetate-treated (200 mg/kg/day, per os), lead-treated (20 mg/kg/day, per os), or lead + acetate-treated. The results revealed that sodium acetate treatment attenuated lead-induced rise in penile lead, malondialdehyde and oxidized glutathione concentrations, and acetylcholinesterase activity. In addition, lead exposure prolonged mount, intromission, and ejaculation latency and reduced mount, intromission, and ejaculation frequency, as well as the motivation to mate and penile reflex, which were improved by acetate treatment. More so, acetate treatment ameliorated lead-induced reductions in absolute and relative penile weight, eNOS, NO, cGMP, luteinizing hormone, follicle-stimulating hormone, testosterone, dopamine, Nrf2, HO-1, and reduced glutathione concentrations, as well as glutathione reductase, glutathione peroxidase, glutathione-S-transferase, superoxide dismutase, and catalase activities. In conclusion, this study demonstrates that sodium acetate attenuated lead-induced sexual dysfunction by upregulating testosterone-dependent eNOS/NO/cGMP and Nrf2/HO-1 signaling. Despite the compelling data presented in this study, other possible associated mechanisms in the protective role of acetate should be explored.
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Affiliation(s)
- E E Besong
- Department of Physiology, Faculty of Basic Medical Sciences, Ebonyi State University, Abakaliki, Nigeria
| | - P J Ashonibare
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
| | - T M Akhigbe
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria
- Breeding and Plant Genetics Unit, Department of Agronomy, Osun State University, Osogbo, Osun State, Nigeria
| | - J N Obimma
- Department of Physiology, Faculty of Basic Medical Sciences, Ebonyi State University, Abakaliki, Nigeria
| | - R E Akhigbe
- Department of Physiology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
- Reproductive Biology and Toxicology Research Laboratory, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria.
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5
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Wang N, Jiang Q, Xie L, Cheng B, Liu QW, Jiang R. Methylation of eNOS in the rat penile corpus cavernosum under different pathological states and its relationship with erectile function. Andrology 2024; 12:222-230. [PMID: 37222247 DOI: 10.1111/andr.13465] [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: 02/02/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/25/2023]
Abstract
BACKGROUND It has been shown that methylation in the promoter region of eNOS can downregulate eNOS expression resulting in the endothelial dysfunction. However, it is unclear whether low androgen levels and type 1 diabetes cause ED by methylating the promoter region of eNOS in the penile corpus cavernosum. OBJECTIVE To clarify the effects of type 1 diabetes and hypo-androgen status on the methylation level of the promoter region of the eNOS gene in penile cavernous tissue and their relationship with the erectile function. METHODS Fifty-eight eight-week-old male Sprague-Dawley rats were randomly divided into six groups (n = 6): sham operation group, castration group, castration+testosterone (cast+T) group, normoglycemia group, diabetic group, and diabetic+methyltransferase inhibitor (5-aza-dc, 1.5 mg/kg) group. The ICPmax/MAP, serum T, the concentration of nitric oxide (NO), the expression of DNMT1, DNMT3a, DNMT3b, and eNOS, and the methylation level of the eNOS promoter region in penile corpus cavernosum of rat were examined 4 weeks after surgery in the sham-operated group, the castration group, and the castration + testosterone replacement group. Those tests were examined after 6 weeks using of methylation inhibitors in the normoglycemic group, the diabetic group, and the diabetic + methylation inhibitor group. RESULTS ICPmax/MAP, DNMT1, DNMT3a, DNMT3b, eNOS, and NO levels were significantly lower in castrated rats than in sham and cast+T rats (P < 0.05). ICPmax/MAP, eNOS, and NO levels were lower, and DNMT1, DNMT3a, and DNMT3b expression levels were significantly increased in the diabetic group compared with the normoglycemic and diabetic+methyltransferase inhibitor groups (P < 0.05). There was no significant difference in the methylation level of the promoter region of eNOS in penile cavernous tissue of castrated rats compared with the sham group or the testosterone replacement group. The methylation level of the promoter region of eNOS in penile cavernous tissue was significantly higher in the diabetic group than in the normoglycemic group and diabetic+methyltransferase inhibitor group (P < 0.05). CONCLUSION Although low androgen status inhibited the level of methyltransferase in rat penile cavernous tissue, did not affect the level of methylation in the promoter region of eNOS. Hyperglycemia inhibits the NO level in the penile cavernous tissue and the erectile function of rats by upregulating the methyltransferase level in the penile cavernous tissue and the methylation level in the promoter region of eNOS. Methylation inhibitors can partly improve the erectile function in type 1 diabetic rats.
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Affiliation(s)
- Na Wang
- Department of Urology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Qilan Jiang
- Department of Clinical Nutrition, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Libo Xie
- Department of Urology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Bo Cheng
- Department of Urology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Qin-Wen Liu
- Department of Urology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Rui Jiang
- Department of Urology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan, China
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6
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Feng X, Mei Y, Xie P, Xing Z, Wang X, Cui L, Xu R. Serum folic acid: an effective indicator for arteriogenic erectile dysfunction. Front Endocrinol (Lausanne) 2023; 14:1080188. [PMID: 37554765 PMCID: PMC10405823 DOI: 10.3389/fendo.2023.1080188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 06/30/2023] [Indexed: 08/10/2023] Open
Abstract
Background The present study is the first to explore the correlation between serum folic acid (FA) level and penile arterial peak systolic velocity (PSV) as measured via penile color Doppler ultrasonography (PDU), which directly reflects endothelial function in the penile artery. Materials and methods A total of 244 consecutive erectile dysfunction (ED) patients and 72 healthy controls, recruited from the Andrology department and the Healthy Physical Examination Center of our hospital, respectively, from June 2020 to April 2022, were included in the study. Serum FA was measured in ED patients and healthy controls, and PDU examinations were conducted for all eligible ED patients. The Pearson method was used to evaluate the correlation between FA levels and PDU parameters in ED patients. A receiver operating characteristic (ROC) curve analysis was also performed to calculate the sensitivity and specificity of these parameters for prediction of arteriogenic ED. Results After the PDU test, the average serum FA level among patients diagnosed with arteriogenic ED was 8.08 ± 2.64 ng/ml, lower than the average of 10.78 ± 2.87 ng/ml among healthy controls. There were no statistically significant inter-group differences on any basic parameters, including age, body mass index, fasting blood glucose, total cholesterol, and triglyceride. For further analysis, we divided the arteriogenic ED group into three subgroups by PSV range to compare serum FA levels among these subgroups. The mean FA levels in each of these groups were 5.97 ± 1.51ng/ml, and 8.21 ± 2.37ng/ml, and 10.55 ± 2.56ng/ml, while the corresponding PSV values were 15.75 ± 2.39cm/s, 23.53 ± 2.19cm/s, and 32.72 ± 1.64cm/s. Overall, a positive correlation between PSV and FA level was found among patients with arteriogenic ED (r=0.605, P<0.001). Furthermore, when FA level was used, with a cut-off value of 10.045 ng/ml, as a criterion to distinguish patients with arteriogenic ED from healthy controls, the area under the curve (AUC) was 0.772 (95% confidential interval: [0.696, 0.848]), for a sensitivity of 0.611 and specificity of 0.824. Conclusion Serum FA level is positively correlated with PSV in ED patients, and has the ability to distinguish patients with arteriogenic ED from healthy controls. Taking these findings together, FA deficiency should be regarded as an independent risk factor for arteriogenic ED.
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Affiliation(s)
- Xingliang Feng
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Department of Urology, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Yangyang Mei
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Pinpeng Xie
- Department of Clinical Medicine, The Second School of Clinical Medicine, Anhui Medical University, Hefei, China
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Zhaoyu Xing
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Department of Urology, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Xiaogang Wang
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Department of Urology, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Li Cui
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Department of Urology, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Renfang Xu
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Department of Urology, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
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Tang Z, Song J, Yu Z, Cui K, Ruan Y, Liu Y, Wang T, Wang S, Liu J, Yang J. Inhibition of MicroRNA-92a Improved Erectile Dysfunction in Streptozotocin-Induced Diabetic Rats via Suppressing Oxidative Stress and Endothelial Dysfunction. World J Mens Health 2023; 41:142-154. [PMID: 35274504 PMCID: PMC9826907 DOI: 10.5534/wjmh.210177] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/17/2021] [Accepted: 12/08/2021] [Indexed: 01/21/2023] Open
Abstract
PURPOSE To determine whether microRNA could be a therapy target of erectile dysfunction (ED) and the underlying mechanisms. MATERIALS AND METHODS Eight-week-old fasting male SD rats were intraperitoneally injected with streptozotocin to construct diabetic rat models. Diabetic ED rats were treated with miRNA-92a inhibitor. The cavernous nerves were electrically stimulated to measure the intracavernous pressure and mean arterial pressure of rats in each group. After the detection, the penile cavernous tissues are properly stored for subsequent experiments. Rat aortic endothelial cells were used in in vitro studies. RESULTS The expression of miR-92a was significantly increased in the corpus cavernosum of Streptozocin (STZ)-induced diabetic rats and injection of miR-92a antagomir into the corpus cavernosum of diabetic rats significantly increased eNOS/NO/cGMP signaling pathway activities, cavernous endothelial cell proliferation, endothelial cell-cell junction protein expression and decreased the levels of oxidative stress. These changes restored erectile function in STZ-induced diabetic rats. Moreover, in vitro study demonstrated that the miR-92a expression increased significantly in endothelial cells treated with high glucose, inhibiting AMPK/eNOS and AMPK/Nrf2/HO-1 signaling pathways in rat aortic endothelial cells via targeting Prkaa2, causing endothelial dysfunction and overactive oxidative stress, miR-92a inhibitor can improve the above parameters. CONCLUSIONS miRNA-92a inhibitor could exert an inhibition role on oxidative stress and endothelial dysfunction to improve diabetic ED effectively.
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Affiliation(s)
- Zhe Tang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jingyu Song
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhe Yu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Kai Cui
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yajun Ruan
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yang Liu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shaogang Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jihong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jun Yang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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8
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Bulbul E, Ozilhan MO, Sezer A, Yetisen M, Ilki FY. Possible Clinical Benefits of Cardio-Ankle Vascular Index Measurement in Urological Diseases. Vasc Health Risk Manag 2023; 19:127-132. [PMID: 36923496 PMCID: PMC10010130 DOI: 10.2147/vhrm.s384937] [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: 12/31/2022] [Accepted: 03/07/2023] [Indexed: 03/11/2023] Open
Abstract
Many factors are considered to affect vascular physiology. It is known that one of the reasons for many diseases is a pathology at the microvascular level. Therefore, the relationship between endothelial dysfunction and many diseases is currently being investigated. The clinical evaluations of arterial stiffness have made it possible to perform necessary risk assessment regarding cardiovascular diseases. In this way, protective measures can be taken against microvascular pathologies in many organs. In this paper, we present a review of studies investigating the relationship between urological conditions and the cardio-ankle vascular index (CAVI), a marker of arterial stiffness. As with erectile dysfunction, some studies have shown that conditions such as lower urinary tract symptoms, overactive bladder, and chronic kidney disease are also associated with an elevated CAVI. The association of erectile dysfunction and chronic kidney disease with vascular pathologies has been clearly demonstrated. In addition, lower urinary tract symptoms may be the first sign of silent vascular dysfunction. Assessing arterial stiffness with CAVI can help prevent future cardiovascular events in these patients.
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Affiliation(s)
- Emre Bulbul
- Department of Urology, Trabzon Vakfıkebir State Hospital, Trabzon, Turkey
| | | | - Ali Sezer
- Department of Urology, Konya City Hospital, Konya, Turkey
| | - Mustafa Yetisen
- Department of Cardiology, Erzurum Oltu State Hospital, Erzurum, Turkey
| | - Fahri Yavuz Ilki
- Department of Urology, Gulhane Training and Research Hospital, Ankara, Turkey
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Yin GN. Pericyte-derived heme-binding protein 1 promotes angiogenesis and improves erectile function in diabetic mice. Investig Clin Urol 2022; 63:464-474. [PMID: 35796141 PMCID: PMC9262492 DOI: 10.4111/icu.20220038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/10/2022] [Accepted: 05/18/2022] [Indexed: 01/12/2023] Open
Abstract
PURPOSE To comprehensively evaluate the effect on angiogenesis of heme-binding protein 1 (Hebp1) in the treatment of diabetes-induced erectile dysfunction. MATERIALS AND METHODS Mouse corpus cavernosum endothelial cells and pericytes were used for in vitro study. Four groups of mice were used: control nondiabetic mice and streptozotocin-induced diabetic mice receiving two intracavernous injections of phosphate-buffered saline, Hebp1 (1 µg), or Hebp1 (5 µg). The function of Hebp1 in diabetic conditions was evaluated by tube formation assay, aorta ring assay, migration assay, intracavernous pressure, immunofluorescence staining, and Western blot experiments. RESULTS We report that Hebp1 is more highly expressed in mouse corpus cavernosum pericytes and can effectively promote endothelial cell angiogenesis under high-glucose conditions. Following exogenous administration of Hebp1 protein, we found that elevated Hebp1 levels can improve the erectile function of diabetic mice, which is achieved by reducing reactive oxygen species levels and activating the PI3K/AKT/eNOS signaling pathway. CONCLUSIONS Our findings demonstrate that Hebp1 can promote angiogenesis and improve erectile function under diabetic conditions.
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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.
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10
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Gurbuz N, Gurkan R, Ender Caylan A, Surmen Usta S, Usta MF. The therapeutic effect of ALT-711 on erectile function in rats treated with high-level AGEs (advanced glycation end products) containing diet. Int J Impot Res 2022; 34:222-228. [PMID: 33712808 DOI: 10.1038/s41443-021-00417-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 01/23/2021] [Accepted: 02/02/2021] [Indexed: 11/09/2022]
Abstract
To investigate, if advanced glycation end products (AGEs) are involved in erectile dysfunction (ED) and also ALT-711, a cross-link breaker of AGEs, has the therapeutic potential against the development of ED in rats treated with high concentrated AGEs including food. For this purpose, 30 male Harlan Spraque-Dawley rats randomly were divided into three groups; (1) control rats treated with regular diet, (2) rats treated with high-level of AGE specific diet for 6 months, and (3) rats having AGE-diet treated with ALT-711 for the final 3 months of 6 months of AGE-diet period. Erectile response to cavernosal nerve stimulation (CNS), protein expression of neuronal nitric oxide synthase (nNOS) and levels of AGEs, Malondialdehyde (MDA), cyclic guanosine monophosphate (cGMP) were determined in penile tissues. Erectile responses to CNS and penile nNOS and cGMP content were significantly reduced, while AGEs and MDA were elevated in penises of Group-2. Treatment with ALT-711 reversed ED and depletion of both nNOS and cGMP. Additionally, ALT-711 treatment reduced penile tissue AGEs and MDA expression. In present study: rats without any co-morbidity such as diabetes mellitus (DM) and chronic renal failure (CRF) were treated with high-level AGEs containing food. Our results suggest that ALT-711 may be an interesting and promising approach in the treatment of AGEs-related ED.
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Affiliation(s)
- N Gurbuz
- Department of Medical Biology, School of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - R Gurkan
- Department of Urology, Section of Andrology, School of Medicine, Akdeniz University, Antalya, Turkey
| | - A Ender Caylan
- Department of Urology, Section of Andrology, School of Medicine, Akdeniz University, Antalya, Turkey
| | - S Surmen Usta
- Health Vocational School, Bilim University, Antalya, Turkey
| | - M F Usta
- Department of Urology, Section of Andrology, School of Medicine, Akdeniz University, Antalya, Turkey.
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11
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Ademosun AO, Mohammed A, Oboh G, Ajeigbe OF. Influence of lemon (Citrus limon) and lime (Citrus aurantifolia) juices on the erectogenic properties of sildenafil in rats with L-NAME-induced erectile dysfunction. J Food Biochem 2022; 46:e14074. [PMID: 35034363 DOI: 10.1111/jfbc.14074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 02/05/2023]
Abstract
The use of lemon (Citrus limon) and lime (Citrus aurantifolia) juices for the treatment of erectile dysfunction (ED) is fast becoming common practice, even though there is dearth of information on the effect of such functional food and drug combination in the management of ED. This study evaluated the effect of lemon and lime juices on the erectogenic properties of sildenafil. ED was induced with L-NAME (40 mg/kg body weight). The rats were divided into 11 groups (n = 6) and given various doses of the test samples. Immediately after the sexual behavior studies, the animals were sacrificed and the penile and brain tissues were isolated. The results revealed that lime and lemon juices improved sexual behavior in rats by improving NO production and inhibiting the activities of PDE-5, arginase, ACE, MAO, ATPdase, AMPdase, and activated antioxidant enzymes. Furthermore, lime at 1.0 ml/kg significantly improved the therapeutic properties of sildenafil. While, lemon (0.5 and 1.0 ml/kg) and lime (0.5 ml/kg) did not show any synergistic effect. This study revealed that lime and lemon juices could improve erectile function and combining lime juice with sildenafil could be very effective in the management of ED. PRACTICAL APPLICATIONS: The therapeutic management of erectile dysfunction has involved maximizing NO production through the modulation of macromolecules such as phosphodiesterase-5 and arginase with the use of drugs such as sildenafil. Combining such drugs with functional foods such as lime and lemon juices is becoming common practice. However, there is dearth of report on the effect of lime and lemon juices on the erectogenic potentials of sildenafil. The present study shows that combining 1 ml/kg lime juice (got from 2 lime fruits) with sildenafil will boost the erectogenic properties of the drug. While combining lime (0.5 ml/kg) and lemon (0.5 and 1.0 ml/kg) juices with the drug did not have any synergistic effect.
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Affiliation(s)
- Ayokunle Olubode Ademosun
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Asmau Mohammed
- Department of Physical and Chemical Sciences, Biochemistry Programme, Elizade University, Ilara-Mokin, Nigeria
| | - Ganiyu Oboh
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Olufunke Florence Ajeigbe
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria.,Department of Physical and Chemical Sciences, Biochemistry Programme, Elizade University, Ilara-Mokin, Nigeria
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Kim SG, You D, Kim K, Aum J, Kim YS, Jang MJ, Moon KH, Kang HW. Therapeutic Effect of Human Mesenchymal Stem Cell-Conditioned Medium on Erectile Dysfunction. World J Mens Health 2021; 40:653-662. [PMID: 35021313 PMCID: PMC9482857 DOI: 10.5534/wjmh.210121] [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: 07/20/2021] [Revised: 09/27/2021] [Accepted: 10/01/2021] [Indexed: 11/26/2022] Open
Abstract
Purpose Owing to the safety and cost effectiveness of conditioned medium (CM), its therapeutic effects have attracted significant attention from many researchers. To date, numerous studies have been conducted on CM; however, little has been done with regard to erectile dysfunction (ED). In this research, the potential of human mesenchymal stem cell-derived CM (MSC-CM) for the treatment of ED was investigated. Materials and Methods A high concentration of MSC-CM was prepared through 3D spheroid culturing with bone marrow-derived MSCs and cut-off filtering. The composition of CM was analyzed using biochemical assays, and the effect of the preparation process on the quality of CM was investigated. The therapeutic effects of MSC-CM were evaluated through animal studies using a cavernous nerve (CN) injury rat model. Results 3D spheroid culturing afforded a 278-fold increase in the total protein content of CM, as compared to that from 2D cultures; the protein concentration increased by 19 times on increasing the centrifugation time for cut-off filtering. Biochemical assays indicated that the CM contains various xlink:types of angiogenic, neurotrophic, and anti-inflammatory factors. Histological assay results showed that MSC-CM has angio- and neuro-trophic effect in a CN injury rat model in vivo, and these therapeutic effects appear in a dose-dependent manner. Conclusions The experimental results confirmed the therapeutic effect of MSC-CM in healing damaged cavernosal tissue and restoring erectile function. These results successfully demonstrated that MSC-CM has significant potential for the treatment of ED.
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Affiliation(s)
- Seul Gi Kim
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea
| | - Dalsan You
- Department of Urology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Korea
| | - Kyung Kim
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Korea
| | - Joomin Aum
- Department of Urology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Korea
| | - Yu Seon Kim
- Department of Urology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Korea
| | - Myoung Jin Jang
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea
| | - Kyung Hyun Moon
- Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
| | - Hyun-Wook Kang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea.
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13
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Tzou KY, Hu SW, Bamodu OA, Wang YH, Wu WL, Wu CC. Efficacy of Penile Low-Intensity Shockwave Therapy and Determinants of Treatment Response in Taiwanese Patients with Erectile Dysfunction. Biomedicines 2021; 9:biomedicines9111670. [PMID: 34829899 PMCID: PMC8615607 DOI: 10.3390/biomedicines9111670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/01/2022] Open
Abstract
Background: Erectile dysfunction (ED) remains an emotional wrench to patients and a therapeutic challenge to urologists in andrology clinics worldwide. This is, in part, related to refraction to, or transient effect of phosphodiesterase 5 inhibitors (PDE5i), coupled with patients’ dissatisfaction with this treatment modality. Low-intensity extracorporeal shockwave therapy (Li-ESWT) is an evolving treatment option, with promising curative potential. Current international guidelines are inconclusive, bear weak recommendation strength, and lack ethnogeographic consensus. Objectives: This study evaluated the safety, efficacy, and effect duration of Li-ESWT, as well as exploring disease-associated determinants of treatment success in Taiwanese males with ED. Methods: A cohort of 69 eligible cases treated with 12 sessions of Li-ESWT and followed up for at least 12 months after treatment, between January 2018 and December 2019 at our medical facility, was used. The present single-center, retrospective, non-randomized, single-arm study employed standardized erectile function evaluation indices, namely, the five-item International Index of Erectile Function (IIEF-5) and Erection Hardness Score (EHS). Clinicopathological analyses of selected variables and comparative analyses of time-phased changes in the EF indices relative to baseline values were performed. Evaluation of treatment success was based on minimal clinically important difference (MCID), using a binomial logistic regression model. Results: The median age and duration of ED for our Taiwanese cohort were 55 years and 12 months, respectively, and an average of 31.3% presented with co-morbidities. The mean improvement in IIEF-5, EHS, and quality of life (QoL) domain scores relative to the baseline values was statistically very significant (p < 0.001) at all indicated follow-up time-points. When stratified, Taiwanese patients with severe and moderate ED benefited more from Li-ESWT, compared with those in the mild or mild-to-moderate group. Patients’ pre-Li-ESWT PDE5i response status was not found to significantly influence Li-ESWT response. Univariate analysis showed that age > 45 years (p = 0.04), uncontrolled diabetes mellitus (p = 0.04), and uncontrolled hyperlipidemia (p = 0.01) were strongly associated with Li-ESWT efficacy; however, only age > 45 years (p = 0.04) and uncontrolled hyperlipidemia (p = 0.03) were found to be independent negative predictors of Li-ESWT success by the multivariate logistic model. Follow-up was uneventful, with no treatment-related adverse events or side effects reported. Of the treated patients, 86.1% indicated satisfaction with the treatment regimen, and over 90% indicated they would recommend the same therapy to others. Conclusions: Li-ESWT is a safe and efficacious therapeutic modality for Taiwanese patients with ED. Uncontrolled hyperlipidemia and age > 45 years are independent negative predictors of treatment success for this cohort.
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Affiliation(s)
- Kai-Yi Tzou
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan; (S.-W.H.); (O.A.B.); (W.-L.W.)
- TMU Research Center of Urology and Kidney (TMU-RCUK), Taipei Medical University, Taipei 110, Taiwan
| | - Su-Wei Hu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan; (S.-W.H.); (O.A.B.); (W.-L.W.)
- TMU Research Center of Urology and Kidney (TMU-RCUK), Taipei Medical University, Taipei 110, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
| | - Oluwaseun Adebayo Bamodu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan; (S.-W.H.); (O.A.B.); (W.-L.W.)
- Division of Hematology and Oncology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
| | - Yuan-Hung Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
| | - Wen-Ling Wu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan; (S.-W.H.); (O.A.B.); (W.-L.W.)
- TMU Research Center of Urology and Kidney (TMU-RCUK), Taipei Medical University, Taipei 110, Taiwan
| | - Chia-Chang Wu
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan; (S.-W.H.); (O.A.B.); (W.-L.W.)
- TMU Research Center of Urology and Kidney (TMU-RCUK), Taipei Medical University, Taipei 110, Taiwan
- Correspondence: or ; Tel./Fax: +886-02-22490088 (ext. 8111)
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Rinkūnienė E, Gimžauskaitė S, Badarienė J, Dženkevičiūtė V, Kovaitė M, Čypienė A. The Prevalence of Erectile Dysfunction and Its Association with Cardiovascular Risk Factors in Patients after Myocardial Infarction. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:1103. [PMID: 34684140 PMCID: PMC8537969 DOI: 10.3390/medicina57101103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 12/30/2022]
Abstract
Background and Objectives: This study estimates the prevalence and severity of erectile dysfunction and its association with cardiovascular risk factors in patients after a myocardial infarction. Materials and Methods: This study included men aged 35-80 years, diagnosed with myocardial infarction and examined in the Department of Preventive Cardiology of Vilnius University Hospital Santaros Klinikos between 2016 and 2020. Anthropometric characteristics, blood pressure, lipid profile, blood glucose levels and prevalence of cardiovascular risk factors were evaluated. The International Index of Erectile Function-5 was used to assess patients' erectile function. Results: A total of 171 patients were analysed. The mean age was 57.6 ± 8.8 years. Of the patients, 42.1, 25.1 and 11.7% had three, four and five established cardiovascular risk factors, respectively. Of the patients, 100% were diagnosed with dyslipidaemia, 90.0%-arterial hypertension, 14.6%-diabetes, 23.3%-smoking, 43.7%-positive familial history and 54.5%-insufficient physical activity. The overall prevalence of erectile dysfunction was 62%. It was scored mild in 37.4%, mild-to-moderate-15.2%, moderate-5.3% and severe in 4.1% of the patients. The mean age was significantly different between severity groups (p < 0.001). The study demonstrated a negative correlation between age and total score of the questionnaire (r = -0.308, p < 0.001). Arterial hypertension was more frequent in the patients with erectile dysfunction (p = 0.02). Other cardiovascular risk factors were distributed similarly. Conclusions: Erectile dysfunction is common in patients after a myocardial infarction and its severity is age dependent. The prevalence of cardiovascular risk factors is high, with arterial hypertension significantly more frequent in patients with erectile dysfunction.
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Affiliation(s)
- Egidija Rinkūnienė
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania; (S.G.); (J.B.); (V.D.); (M.K.); (A.Č.)
- Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
| | - Silvija Gimžauskaitė
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania; (S.G.); (J.B.); (V.D.); (M.K.); (A.Č.)
- Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
| | - Jolita Badarienė
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania; (S.G.); (J.B.); (V.D.); (M.K.); (A.Č.)
- Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
| | - Vilma Dženkevičiūtė
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania; (S.G.); (J.B.); (V.D.); (M.K.); (A.Č.)
- Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
| | - Milda Kovaitė
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania; (S.G.); (J.B.); (V.D.); (M.K.); (A.Č.)
- Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
| | - Alma Čypienė
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania; (S.G.); (J.B.); (V.D.); (M.K.); (A.Č.)
- Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
- State Research Institute Centre of Innovative Medicine, 08410 Vilnius, Lithuania
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15
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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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16
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Dai Y, Mei Z, Zhang S, Shali S, Ren D, Xu L, Gao W, Chang S, Zheng Y, Qian J, Yao K, Ge J. Sexual Dysfunction and the Impact of Beta-Blockers in Young Males With Coronary Artery Disease. Front Cardiovasc Med 2021; 8:708200. [PMID: 34368259 PMCID: PMC8333273 DOI: 10.3389/fcvm.2021.708200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/29/2021] [Indexed: 01/23/2023] Open
Abstract
Objective: We aimed to assess the association of erectile dysfunction (ED) with the extent of coronary atherosclerosis, and to examine whether revascularization and medication use have an impact on ED status in patients with early onset of coronary artery disease (EOCAD). Methods: International Index of Erectile Function (IIEF-5) was used to evaluate sexual function in 296 male patients with EOCAD (age, 39.9 ± 4.8 years), and 354 male controls (age, 40.6 ± 4.4 years). The extent of coronary atherosclerosis was measured by Gensini score. Endothelial function was evaluated by two vasomotor indexes including endothelin-1 (ET-1) and nitric oxide (NO) by ELISA. Results: ED was more frequent (57.8 vs. 31.1%, P < 0.001) and serious (IIEF-5 score:17.7 ± 6.0 vs. 21.6 ± 5.0, P < 0.001) among EOCAD patients than that among controls. IIEF-5 score was negatively correlated with Gensini score (r = −0.383, P < 0.001). The adjusted odds ratio (OR) for the presence of ED (EOCAD vs. controls) was 1.88 [95% confidential interval (CI), 1.12-3.18]. However, ET-1 and NO attenuated the association between ED and EOCAD (adjusted OR: 1.54, 95% CI: 0.84-2.80). IIEF-5 score increased after coronary revascularization in patients not on beta-blockers (18.71 ± 4.84 vs. 17.59 ± 6.05, P < 0.001) as compared with baseline, while stayed unchanged in the subgroup using beta-blockers (17.82 ± 5.12 vs. 17.70 ± 5.98, P = 0.09). Conclusions: ED was common in patients with EOCAD, and associated with the severity of coronary atherosclerosis. Endothelial dysfunction may be a pathophysiologic mechanism underlying both ED and EOCAD. Coronary revascularization confers a benefit in ED amelioration, while this effect did not appear in patients using beta-blocker.
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Affiliation(s)
- Yuxiang Dai
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Zhendong Mei
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Human Phenome Institute, Fudan University, Shanghai, China
| | - Shuning Zhang
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Shalaimaiti Shali
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Daoyuan Ren
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Lili Xu
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Wei Gao
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Shufu Chang
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Yan Zheng
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Human Phenome Institute, Fudan University, Shanghai, China.,Ministry of Education Key Laboratory of Public Health Safety, School of Public Health, Fudan University, Shanghai, China
| | - Juying Qian
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Kang Yao
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Disease, National Clinical Research Center for Interventional Medicine, Shanghai, China
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17
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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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18
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Sturny M, Anguenot L, Costa-Fraga FP, Bragina ME, Lima AM, da Silva RF, Fraga-Silva RA, Stergiopulos N. Apelin-13 Protects Corpus Cavernosum Against Fibrosis Induced by High-Fat Diet in an MMP-Dependent Mechanism. J Sex Med 2021; 18:875-888. [PMID: 33863684 DOI: 10.1016/j.jsxm.2021.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 01/12/2021] [Accepted: 02/03/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND An increased fibrosis of the corpora cavernosa is a prevalent process that underlies most cases of erectile dysfunction. Apelin, an endogenous circulating peptide, has been documented as an important effector on cardiovascular homeostasis, controlling vascular function and reducing fibrosis in multiple pathological conditions. Recently, initial studies have shown that Apelin, acting through the APJ receptor, also modulates penile erection, however, the role of this system on penile structure and intracorporal collagen remodeling has not been investigated yet. AIMS Here we sought to investigate the effect of chronic Apelin treatment on the corpus cavernosum structure of hyperchOlesterolemic mice. METHODS Apolipoprotein gene-deleted (ApoE-/-) mice were fed with a Western diet for 11 weeks and received Apelin-13 (2 mg/kg/day) or vehicle during the last 3 weeks. Penile samples were obtained for histological and biochemical analyses to assess the intracorporal collagen content and key proteins expression. Furthermore, the effect of Apelin-13 was evaluated in cultured NIH3T3 mouse fibroblasts stimulated with TGF-β. OUTCOME Local expression of Apelin-13 in mouse corpus cavernosum and its protective effect against fibrosis. RESULTS Apelin and APJ receptor were expressed (gene and protein) within the corpus cavernosum of ApoE-/- mice, indicating a local modulation of the Apelin system. Interestingly, 3 weeks of Apelin-13 treatment strongly reduced intracavernosal collagen content. In addition, Apelin-13 enhanced total matrix metalloproteinase (MMP) activity in the mice penis, which was associated with an increased protein expression of MMP-1, MMP-3, MMP-8, and MMP-9, while tissue inhibitor of metalloproteinase were unaltered. These beneficial actions were not associated with changes in nNOS or eNOS protein expression, intracavernosal reactive oxygen species content, or atherosclerotic plaque deposition. Additionally, in cultured fibroblast, Apelin-13 inhibited TGF-β-induced fibroblast to myofibroblast differentiation and collagen production, possibly through the activation of ERK1/2 kinase. CLINICAL TRANSLATION These results point out Apelin/APJ system as a potential target to treat intracavernosal fibrosis-related disorders. STRENGTH & LIMITATIONS These results provide the first evidence of the Apelin system's positive role on erectile tissue structure/remodeling. Nevertheless, additional functional study addressing erectile response would bring extended validation regarding the relevance of such effect. CONCLUSION These results suggest a local modulation of the Apelin system within the corpus cavernosum. Remarkably, Apelin-13 reduced intracavernosal fibrosis in hypercholesterolemic mice by: (i) enhancing MMPs expression and activity; and (ii) inhibiting fibroblast differentiation into myofibroblast. Altogether, these results suggest an essential protective role of Apelin, indicating Apelin/APJ system as a promising candidate for the development of fibrosis-associated erectile dysfunction treatments. Sturny M, Anguenot L Costa-Fraga FP, et al. Apelin-13 Protects Corpus Cavernosum Against Fibrosis Induced by High-Fat Diet in an MMP-Dependent Mechanism. J Sex Med 2021;18:875-888.
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Affiliation(s)
- Mikael Sturny
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Léa Anguenot
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Fabiana P Costa-Fraga
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Maiia E Bragina
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Augusto Martins Lima
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Rafaela F da Silva
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Rodrigo A Fraga-Silva
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
| | - Nikolaos Stergiopulos
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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19
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Ye M, Zhao F, Ma K, Zhou K, Ma J, Fu H, Xu Z, Huang W, Wang W, Zhao J, Lv B. Enhanced effects of salidroside on erectile function and corpora cavernosa autophagy in a cavernous nerve injury rat model. Andrologia 2021; 53:e14044. [PMID: 33709426 DOI: 10.1111/and.14044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/10/2021] [Accepted: 02/21/2021] [Indexed: 12/31/2022] Open
Abstract
We explored the efficacy and mechanisms of salidroside treatment for erectile dysfunction induced by bilateral cavernous nerve injury (BCNI). Forty male rats were divided into four groups as follows: sham (cavernous nerves exposed only) (S); BCNI (M); BCNI + rapamycin (M + rapamycin); and BCNI + salidroside (M + salidroside). Erectile function in the rats was measured by intracavernosal pressure. Penile tissue was harvested for transmission electron microscopy, immunohistochemistry, immunofluorescence, Masson's trichrome staining, haematoxylin-eosin staining, TdT-mediated dUTP Nick End Labeling and western blotting. The M group exhibited a decrease in erectile responses and increased apoptosis and fibrosis compared to these in the S group. Meanwhile, nerve content and the penile atrophy index were also decreased in the M group. Treatment with salidroside and rapamycin for 3 weeks partially restored erectile function and significantly attenuated corporal apoptosis, fibrosis, nerve content and penile atrophy in the M group. Moreover, the autophagy level was further enhanced in the M + salidroside group, which was the same as that in the positive observation group (M + rapamycin). Salidroside treatment not only improved erectile function in rats with BCNI, but also inhibited apoptosis and fibrosis and ameliorated the loss of nerve content and endothelial and corpus cavernosum smooth muscle cells by promoting protective autophagy.
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Affiliation(s)
- Miaoyong Ye
- Department of Urology, The First People's Hospital of Wenling, The Affiliated Wenling Hospital of Wenzhou Medical University, Wenling, China.,The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fan Zhao
- Department of Urology and Andrology, Affiliated Hospital of Nantong University, Nantong, China
| | - Ke Ma
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kang Zhou
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianxiong Ma
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Huiying Fu
- Research Institute of Urology and Andrology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zengbao Xu
- Department of Urology, Huzhou Hospital of Traditional Chinese Medicine, Huzhou, China
| | - Wenjie Huang
- Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Wenzhi Wang
- Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianfeng Zhao
- Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Bodong Lv
- Research Institute of Urology and Andrology, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Urology and Andrology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.,Key Laboratory of Integrative Chinese and Western Medicine for Prevention and Treatment of Sexual Dysfunction of Zhejiang Province, Hangzhou, China
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20
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Tiraboschi RB, Neto FSL, da Cunha Tirapelli DP, de Bessa J, Miranda EP, de Assis Cirino ML, Tirapelli LF, Tucci S, Molina CAF. Expression of MicroRNAs (miR-15b, miR-16, miR-138, miR-221, and miR-222) as Biomarkers of Endothelial Corpus Cavernosum Dysfunction in a Diabetic Alcoholic Murine Model. Sex Med 2021; 9:100326. [PMID: 33676226 PMCID: PMC8072178 DOI: 10.1016/j.esxm.2021.100326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION MicroRNAs (miRNAs) are short noncoding RNA molecules that regulate gene expression and are related to endothelial dysfunction (EnD). Recently, miRNAs have also been explored as potential biomarkers and target molecular therapy of erectile dysfunction (ED). Could the miRNAs be the tip of the iceberg of chronic arterial disease foreshadowed by the ED? AIM To investigate the expression of miR-15b, miR-16, miR-138, miR-221, and miR-222 in corpus cavernosum (CC) and peripheral blood in a rat model of endothelium dysfunction secondary to diabetes (DM) and alcohol consumption to assess potential endothelial lesion biomarkers. METHODS Twenty males Wistar rats were divided into 4 groups: control group (C), alcohol consumption group (A), diabetic group (D), diabetic-alcohol consumption group (D + A). DM was alloxan-induced and alcohol consumption was through progressive increase of ethanol concentration in drinkable water. After 7 weeks, miRNAs expressions from CC and blood sample were evaluated by real-time PCR. Functional assessment of CC was performed in an acetylcholine endothelium-dependent relaxation pharmacological study. MAIN OUTCOME MEASURE miRNA expression in CC and blood were evaluated; pharmacological study in CC strips was conducted to validate EnD. RESULTS We found that 3 miRNAs (miR-16, miR-221, and miR-222) were downregulated in the CC in the D+A group, while all 5 miRNAs were downregulated in the blood of D and D + A groups. The endothelium-dependent relaxation induced by acetylcholine was significantly decreased in groups A, D, and D + A. Diagnostic accuracy estimated by AUC, to discriminating groups A, D, and D + A from controls, was superior to >0.9 in all plasmatic miRNAs. CONCLUSION miRNAs downregulation was identified in both CC and blood notably in DM associated with alcohol consumption animals (D + A), the greatest endothelial injury potential group. Serum miRNAs have also demonstrated high diagnostic accuracy properties in predicting CC relaxation dysfunction labeling EnD. RB Tiraboschi, FSL Neto, DP da Cunha Tirapelli, et al. Expression of MicroRNAs (miR-15b, miR-16, miR-138, miR-221, and miR-222) as Biomarkers of Endothelial Corpus Cavernosum Dysfunction in a Diabetic Alcoholic Murine Model. Sex Med 2021;9:100326.
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Affiliation(s)
- Ricardo Brianezi Tiraboschi
- Department of Surgery, Division of Urology, Universidade Estadual de Feira de Santana, Medical School, State University of Feira de Santana, Feira de Santana, Brazil; Division of Urology, University of São Paulo, Ribeirão Preto Medical School, Surgery and Anatomy, Ribeirao Preto, São Paulo, Brazil
| | | | | | - Jose de Bessa
- Department of Surgery, Division of Urology, Universidade Estadual de Feira de Santana, Medical School, State University of Feira de Santana, Feira de Santana, Brazil
| | | | - Mucio Luiz de Assis Cirino
- University of São Paulo, Ribeirão Preto Medical School, Surgery and Anatomy, Ribeirao Preto, São Paulo, Brazil
| | - Luis Fernando Tirapelli
- University of São Paulo, Ribeirão Preto Medical School, Surgery and Anatomy, Ribeirao Preto, São Paulo, Brazil
| | - Silvio Tucci
- Division of Urology, University of São Paulo, Ribeirão Preto Medical School, Surgery and Anatomy, Ribeirao Preto, São Paulo, Brazil
| | - Carlos Augusto Fernandes Molina
- Division of Urology, University of São Paulo, Ribeirão Preto Medical School, Surgery and Anatomy, Ribeirao Preto, São Paulo, Brazil
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21
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Sandner P, Zimmer DP, Milne GT, Follmann M, Hobbs A, Stasch JP. Soluble Guanylate Cyclase Stimulators and Activators. Handb Exp Pharmacol 2021; 264:355-394. [PMID: 30689085 DOI: 10.1007/164_2018_197] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
When Furchgott, Murad, and Ignarro were honored with the Nobel prize for the identification of nitric oxide (NO) in 1998, the therapeutic implications of this discovery could not be fully anticipated. This was due to the fact that available therapeutics like NO donors did not allow a constant and long-lasting cyclic guanylyl monophosphate (cGMP) stimulation and had a narrow therapeutic window. Now, 20 years later, the stimulator of soluble guanylate cyclase (sGC), riociguat, is on the market and is the only drug approved for the treatment of two forms of pulmonary hypertension (PAH/CTEPH), and a variety of other sGC stimulators and sGC activators are in preclinical and clinical development for additional indications. The discovery of sGC stimulators and sGC activators is a milestone in the field of NO/sGC/cGMP pharmacology. The sGC stimulators and sGC activators bind directly to reduced, heme-containing and oxidized, heme-free sGC, respectively, which results in an increase in cGMP production. The action of sGC stimulators at the heme-containing enzyme is independent of NO but is enhanced in the presence of NO whereas the sGC activators interact with the heme-free form of sGC. These highly innovative pharmacological principles of sGC stimulation and activation seem to have a very broad therapeutic potential. Therefore, in both academia and industry, intensive research and development efforts have been undertaken to fully exploit the therapeutic benefit of these new compound classes. Here we summarize the discovery of sGC stimulators and sGC activators and the current developments in both compound classes, including the mode of action, the chemical structures, and the genesis of the terminology and nomenclature. In addition, preclinical studies exploring multiple aspects of their in vitro, ex vivo, and in vivo pharmacology are reviewed, providing an overview of multiple potential applications. Finally, the clinical developments, investigating the treatment potential of these compounds in various diseases like heart failure, diabetic kidney disease, fibrotic diseases, and hypertension, are reported. In summary, sGC stimulators and sGC activators have a unique mode of action with a broad treatment potential in cardiovascular diseases and beyond.
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Affiliation(s)
- Peter Sandner
- Bayer AG, Pharmaceuticals R&D, Pharma Research Center, Wuppertal, Germany. .,Department of Pharmacology, Hannover Medical School, Hannover, Germany.
| | | | | | - Markus Follmann
- Bayer AG, Pharmaceuticals R&D, Pharma Research Center, Wuppertal, Germany
| | - Adrian Hobbs
- Barts and the London School of Medicine and Dentistry QMUL, London, UK
| | - Johannes-Peter Stasch
- Bayer AG, Pharmaceuticals R&D, Pharma Research Center, Wuppertal, Germany.,Institute of Pharmacy, University Halle-Wittenberg, Halle, Germany
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22
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Britt D, Blankstein U, Lenardis M, Millman A, Grober E, Krakowsky Y. Availability of platelet-rich plasma for treatment of erectile dysfunction and associated costs and efficacy: A review of current publications and Canadian data. Can Urol Assoc J 2020; 15:202-206. [PMID: 33212009 DOI: 10.5489/cuaj.6947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Platelet-rich plasma (PRP) is an increasingly used unconventional treatment option for erectile dysfunction (ED). The validity of PRP as a potential treatment for ED has been proposed in limited human trials. Furthermore, the costs associated with PRP for ED treatment are not readily promoted to patients. The goal of this review was to determine the efficacy and costs of PRP based on currently available literature and Canadian data. METHODS A comprehensive literature review of available PRP studies and current published data pertaining to cost, availability, and provider clinics globally was conducted using the PubMed database. Physicians offering genital PRP in Canada were identified using internet searches and PRP provider directories. Physician qualifications, clinic locations, and cost information were obtained from provider websites and telephone calls to identified clinics. RESULTS Availability of PRP injections offered for treating ED is increasing globally. There are currently no peer-reviewed publications to substantiate anecdotal evidence pertaining to the efficacy of PRP as a viable treatment option for ED patients. Our results indicate 19 providers for PRP injections in Canada, costing on average $1777 CAD per injection. No providers were affiliated with academic institutions and providers varied in their area of clinical speciality and training. CONCLUSIONS To our knowledge, there is currently no research underway investigating the clinical efficacy of PRP for ED treatment despite its broad availability and significant cost. Patients should be informed of the lack of substantiated efficacy and safety data, as the reliability of PRP treatments requires further evaluation.
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Affiliation(s)
- Deron Britt
- University of Ottawa, Faculty of Medicine, Ottawa, ON, Canada
| | - Udi Blankstein
- Division of Urology, University of Toronto, Toronto, ON, Canada
| | | | | | - Ethan Grober
- Women's College Hospital, Division of Urology, University of Toronto, Toronto, ON, Canada
| | - Yonah Krakowsky
- Women's College Hospital, Division of Urology, University of Toronto, Toronto, ON, Canada
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23
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Effects of Cultured Cordycep militaris on Sexual Performance and Erectile Function in Streptozotocin-Induced Diabetic Male Rats. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4198397. [PMID: 33274209 PMCID: PMC7683110 DOI: 10.1155/2020/4198397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 09/29/2020] [Accepted: 11/03/2020] [Indexed: 11/18/2022]
Abstract
Cordyceps militaris (CM), a valuable edible and medicinal fungus, has been used as traditional medicine to treat health conditions, as well as hyposexuality in Asian societies for over a century. Due to the high demand, several artificial cultivation methods have been developed for their biological activities. In this study, CM was cultured on medium that contained white rice and silkworm pupae, and the levels of cordycepin and adenosine, as well as its aphrodisiac effects in diabetes-induced erectile dysfunction (DIED), were evaluated. Diabetic rats were induced by streptozotocin (STZ) injection and administered orally with CM (0.1, 0.5, and 1.0 g/kg BW/day) for 3 weeks. Diabetic rats in negative and positive control groups received vehicle and sildenafil citrate (5 mg/kg), respectively. Results showed the changes in mating behaviour in which mount latency and intromission latency were significantly increased in diabetic rats, compared with the normal control group. Diabetic rats also showed a significant reduction in intracavernosal pressure (ICP) response to cavernous nerve stimulation, sperm count, testosterone level, penile nitric oxide synthase (NOS), and testicular superoxide dismutase (SOD) activities, when compared to the normal control group. Administration of CM (0.1, 0.5, and 1.0 g/kg BW/day) reversed the effects of diabetes on the mating behaviour, and the ICP responses to electrical stimulation. Moreover, the levels of penile NOS, testicular SOD activities, testosterone, and sperm count were significantly increased, and testicular malondialdehyde (MDA) levels were significantly decreased in these treated diabetic rats. Diabetic rats treated with sildenafil showed a significant induction in intromission frequency and NOS and SOD activities, as well as a marked increase in ICP responses. These results suggest that CCM exerts its aphrodisiac effect, possibly through activating testosterone production and suppressing oxidative stress to enhance erectile function in diabetic rats.
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He W, Liu J, Liu D, Hu J, Jiang Y, Li M, Wang Q, Chen P, Zeng G, Xu D, Wang X, DiSanto ME, Zhang X. Alterations in the phosphodiesterase type 5 pathway and oxidative stress correlate with erectile function in spontaneously hypertensive rats. J Cell Mol Med 2020; 24:14280-14292. [PMID: 33118708 PMCID: PMC7754015 DOI: 10.1111/jcmm.16045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 09/16/2020] [Accepted: 10/11/2020] [Indexed: 12/24/2022] Open
Abstract
To explore how alterations in the phosphodiesterase type 5 (PDE5) signalling pathway and oxidative stress correlate with changes in the expression of relaxation and contraction molecules and erectile dysfunction (ED) in the corpus cavernosum smooth muscle (CCSM) of spontaneously hypertensive rats (SHR). In this study, SHR and Wistar‐Kyoto (WKY) rats were used. Erectile function was determined by apomorphine test and electrical stimulation (ES) of cavernous nerve. Masson's trichrome staining and confocal microscopy were performed. Nitric oxide synthase (NOS), PDE5, phosphorylated‐PDE5 and α1‐adrenergic receptor (α1AR) were determined by RT‐PCR and Western blotting while oxidative stress in CC was determined by colorimetric analysis. SHR exhibited obvious ED. CC of SHR showed less SM but more collagen fibres. The expression of NOS isoforms in SHR was significantly decreased while all α1AR isoforms were increased. In addition, PDE5 and phosphorylated‐PDE5 were down‐regulated and its activity attenuated in the hypertensive rats. Meanwhile, the SHR group suffered oxidative stress, which may be modulated by endoplasmic reticulum stress and NADPH oxidase up‐regulation. Dysregulation of NOS and α1AR, histological changes and oxidative stress in CC may be associated with the pathophysiology of hypertension‐induced ED. In addition, PDE5 down‐regulation may lead to the decreased efficacy of PDE5 inhibitors in some hypertensive ED patients and treatment of oxidative stress could be used as a new therapeutic target for this type of ED.
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Affiliation(s)
- Weixiang He
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jianmin Liu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Daoquan Liu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jundong Hu
- Department of Urology, First People's Hospital of Xiaochang County, Hubei, China
| | - Ye Jiang
- Department of Urology, People's Hospital of Qichun County, Hubei, China
| | - Mingzhou Li
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Qian Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ping Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Guang Zeng
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Deqiang Xu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xinghuan Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Michael E DiSanto
- Department of Surgery and Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Xinhua Zhang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
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Che D, Fang Z, Yan L, Du J, Li F, Xie J, Feng J, Yin P, Qi W, Yang Z, Ma J, Yang X, Gao G, Zhou T. Elevated pigment epithelium-derived factor induces diabetic erectile dysfunction via interruption of the Akt/Hsp90β/eNOS complex. Diabetologia 2020; 63:1857-1871. [PMID: 32377760 DOI: 10.1007/s00125-020-05147-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 03/09/2020] [Indexed: 11/24/2022]
Abstract
AIMS/HYPOTHESIS Diabetes mellitus erectile dysfunction (DMED) is a common complication of diabetes. The level of pigment epithelium-derived factor (PEDF) is significantly upregulated in the serum of individuals with obesity and diabetes. However, whether elevated PEDF levels contribute to DMED remains unknown. This study aimed to investigate the pathogenic role of PEDF and its related mechanism in DMED. METHODS We enrolled 65 men, of whom 20 were nondiabetic control participants, 21 participants with diabetes but without erectile dysfunction, and 24 with DMED. The International Index of Erectile Function (IIEF-5) questionnaire was administered to evaluate erectile function. Plasma PEDF in diabetic participants and streptozotocin (STZ)-induced diabetic animals was detected by ELISA. Erectile function was evaluated by measuring the intracavernous pressure (ICP) and the ICP/mean arterial pressure (MAP) ratio in STZ-induced diabetic rats treated with PEDF-neutralising antibody (PEDF-Ab), db/db mice treated with PEDF-Ab, and Pedf knockout mice with STZ-induced diabetes. The overexpression of PEDF was implemented by intraperitoneal injection of recombinant PEDF and intracavernous injection of PEDF-expressing adenovirus. A mechanistic study was performed by immunofluorescence staining, bimolecular fluorescence complementation (BiFC), immunoprecipitation and western blotting. RESULTS We found that the plasma level of PEDF was significantly higher in participants with DMED compared with diabetic counterparts without erectile dysfunction and nondiabetic controls. Interestingly, PEDF levels were negatively correlated with plasma nitrite/nitrate levels and erectile function in DMED patients and STZ-induced diabetic rats. Furthermore, overexpression of PEDF significantly suppressed ICP and endothelial nitric oxide synthase (eNOS) phosphorylation in control rats. In contrast, the PEDF-Ab and Pedf knockout ameliorated ICP and eNOS phosphorylation in diabetic rats and mice. Mechanistically, PEDF promoted the membrane translocation of Hsp90β and directly bound to the amino acid residues 341-724 of Hsp90β on the endothelial cell surface, subsequently blocking intracellular Hsp90β/Akt/eNOS complex formation and downregulating eNOS phosphorylation. CONCLUSIONS/INTERPRETATION These results indicate that elevated PEDF levels contribute to impaired erectile function by suppressing Hsp90β-mediated eNOS phosphorylation and that PEDF may represent a novel therapeutic target for diabetic erectile dysfunction. Graphical abstract.
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Affiliation(s)
- Di Che
- Program of Molecular Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Zhenzhen Fang
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
| | - Li Yan
- Department of Endocrinology, Second Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jieping Du
- Department of Endocrinology, Second Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fangping Li
- Department of Endocrinology, Second Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jinye Xie
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
| | - Juan Feng
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
| | - Ping Yin
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
| | - Weiwei Qi
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
| | - Zhonghan Yang
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China
| | - Jianxing Ma
- Department of Physiology, University of Oklahoma, Health Sciences Center, Oklahoma City, OK, USA
| | - Xia Yang
- Program of Molecular Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China.
- Guangdong Engineering & Technology Research Center for Gene Manipulation and Biomacromolecular Products, Sun Yat-sen University, Guangzhou, China.
| | - Guoquan Gao
- Program of Molecular Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China.
- Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
| | - Ti Zhou
- Program of Molecular Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, 510080, China.
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Adefegha SA, Oboh G, Olopade EO. β-caryophyllene improves sexual performance via modulation of crucial enzymes relevant to erectile dysfunction in rats. Toxicol Res 2020; 37:249-260. [PMID: 33868981 DOI: 10.1007/s43188-020-00061-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/21/2020] [Accepted: 07/27/2020] [Indexed: 12/13/2022] Open
Abstract
This study sought to investigate the effect of β-caryophyllene (BCP) on sexual performance, crucial enzymes linked to erectile function as well as lipid peroxidation in the penile tissue of paroxetine (PD)-induced rats. Animals were randomly divided into ten groups of five animals each: normal control (NC), BCP (10 mg/kg), BCP (20 mg/kg), sildenafil citrate (SD) (20 mg/kg), BCP + SD (20 mg/kg), PD (20 mg/kg), PD + BCP (10 mg/kg), PD + BCP (20 mg/kg), PD + SD (20 mg/kg) and PD + BCP (20 mg/kg) + SD (20 mg/kg). Oral administration of 20 mg/kg body weight of PD for the first 7 days was done while treatment with BCP and SD were performed between 8 and 14 days prior to euthanasia. The sexual performance study revealed that PD caused erectile dysfuction. Elevated activities of phosphodiesterase-5' (PDE-5'), arginase, adenosine deaminase (ADA), acetylcholinesterase (AChE) and angiotensin-I converting enzyme (ACE) as well as lipid peroxidation level were observed in PD-induced rats when compared to the NC group. However, treatment with sildenafil and/ or β-Caryophyllene significantly reduced the activities of AChE, PDE-5', arginase, ADA, and ACE in penile tissues of PD-induced rats. In addition, co-administration of β-caryophyllene and sildenafil citrate showed better modulatory effects. Thus, β-caryophyllene could represent a potential nutraceutical in the management of erectile dysfunction.
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Affiliation(s)
- Stephen A Adefegha
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, 340001 Nigeria
| | - Ganiyu Oboh
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, 340001 Nigeria
| | - Elijah O Olopade
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, 340001 Nigeria
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Erythrocytes as markers of oxidative stress related pathologies. Mech Ageing Dev 2020; 191:111333. [PMID: 32814082 DOI: 10.1016/j.mad.2020.111333] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 02/06/2023]
Abstract
Erythrocytes are deeply sensitive cells and important health indicators. During inflammatory response RBC, as a part of haematological system, are exposed to circulating inflammatory mediators and related oxidative stress. They present a highly specialized and organized cell membrane that interacts with inflammatory mediators and oxidative agents, leading to a variety of structural changes that promptly signal an abnormal situation. This review is aimed to provide an overview on erythrocyte involvement in physiological and pathological processes related to oxidative stress, such as aging, Down syndrome, neurodegenerative diseases, for instance Alzheimer Disease, erectile dysfunction and cardiovascular diseases. In particular this review will focus on the effects of oxidative stress on structural changes in the cell membrane and also on in the activity of erythrocyte enzymes such as membrane-bound, cytosolic glycohydrolases and RBC-eNOS. This review also underlines the potential clinical application of erythrocyte specific related parameters, which can be important tools not only for the study but also for the monitoring of several oxidative stress related diseases.
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Smooth Muscle Progenitor Cells Preserve the Erectile Function by Reducing Corporal Smooth Muscle Cell Apoptosis after Bilateral Cavernous Nerve Crush Injury in Rats. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8520523. [PMID: 31828135 PMCID: PMC6885159 DOI: 10.1155/2019/8520523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 05/07/2019] [Accepted: 10/22/2019] [Indexed: 12/03/2022]
Abstract
Radical prostatectomy causes erectile dysfunction (ED) and irreversible morphologic changes, including induction of endothelial and smooth muscle cell (SMC) apoptosis in the corpus cavernosum (CC). The injection of smooth muscle progenitor cells (SPCs) thickens the vascular intima and has demonstrated therapeutic benefit in cardiovascular disease animal. Herein, we investigated the effect of SPCs on the recovery of erectile function (EF) in rat models with bilateral cavernous nerve (CN) injury. Twenty-four male Sprague-Dawley rats were randomized into sham, vehicle only, or SPC treatment groups. Rats in the SPC treatment and vehicle groups were subjected to bilateral CN injury before intracavernosal injection. Intracavernosal injections of SPCs increased all EF parameters at day 28 after injury and simultaneously reduced apoptosis of the SMCs. Ultrastructural analysis revealed that SPCs maintained the integrity of the CC by preserving the structure of the adherens junctions. Tracking transplanted SPCs labeled with EdU showed that transplanted SPCs remained in the CC 28 days after treatment. Intracavernosal SPC injection restored EF after bilateral CN injury by reducing SMC apoptosis, which favored the maintenance of the structure of adherens junctions and regulated the stability of corporal vessels. These findings demonstrate the therapeutic potential of SPCs for treating ED in humans.
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Ademosun AO, Adebayo AA, Oboh G. Orange peels modulate antioxidant markers and key enzymes relevant to erection in the penile tissue of paroxetine‐treated rats. Andrologia 2019; 51:e13371. [DOI: 10.1111/and.13371] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 04/25/2019] [Accepted: 06/03/2019] [Indexed: 12/27/2022] Open
Affiliation(s)
- Ayokunle O. Ademosun
- Functional Foods and Nutraceuticals Unit, Biochemistry Department Federal University of Technology Akure Nigeria
| | - Adeniyi A. Adebayo
- Functional Foods and Nutraceuticals Unit, Biochemistry Department Federal University of Technology Akure Nigeria
| | - Ganiyu Oboh
- Functional Foods and Nutraceuticals Unit, Biochemistry Department Federal University of Technology Akure Nigeria
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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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Ademosun AO, Adebayo AA, Oboh G. Anogeissus leiocarpus attenuates paroxetine-induced erectile dysfunction in male rats via enhanced sexual behavior, nitric oxide level and antioxidant status. Biomed Pharmacother 2019; 111:1029-1035. [DOI: 10.1016/j.biopha.2019.01.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/04/2019] [Accepted: 01/06/2019] [Indexed: 01/29/2023] Open
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Ojo OA, Afon AA, Ojo AB, Ajiboye BO, Okesola MA, Aruleba RT, Adekiya TA, Oyinloye BE. Spondias mombim L. (Anacardiaceae): Chemical fingerprints, inhibitory activities, and molecular docking on key enzymes relevant to erectile dysfunction and Alzheimer's diseases. J Food Biochem 2019; 43:e12772. [PMID: 31353540 DOI: 10.1111/jfbc.12772] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/23/2018] [Accepted: 01/02/2019] [Indexed: 12/13/2022]
Abstract
Due to the exceptional wide range in biochemical activities of natural plant products, Spondias mombim L. are attaining a new height because they present great prospects for drug advancement. This research was designed to analyze the pharmaceutical properties of S. mombim L. ethyl acetate fraction (SMEAF) on key enzymes relevant to erectile and cognitive dysfunction. SMEAF inhibitory activities of the specified enzymes were determined spectrophotometrically. Chemical profile of SMEAF were assessed by HPLC/MS analysis. Thereafter, molecular docking of the studied enzymes with chlorogenic acid, lutein, and zeaxanthin were carried out using PATCHDOCK. SMEAF had remarkable enzyme inhibitory effects against phosphodiesterase-5 (PDE-5), arginase, angiotensin I-converting enzyme (ACE), cholinesterase, monoamine oxidase A (MAO), ecto-5' nucleotidase (E-NTDase), tyrosinase, and stimulated sodium-potassium ATPase (Na+/K+-ATPase) activities. HPLC/MS analysis revealed that phenolics and carotenoids were major components in these fraction notably, chlorogenic acid, lutein, and zeaxanthin. Our results suggested that SMEAF could be explored as phytopharmaceuticals. PRACTICAL APPLICATIONS: Spondias mombim L. are cooked as green vegetable with enormous medicinal value probably due to its polyphenols with potent antioxidant activity. Furthermore, the leaves could also be useful for therapeutic purposes against erectile dysfunction and central nervous system disorders.
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Affiliation(s)
- Oluwafemi Adeleke Ojo
- Phytomedicine, and Biomedical Toxicology Unit, Department of Biochemistry, Afe Babalola University, Ado-Ekiti, Nigeria.,Department of Biochemistry, University of Ilorin, Ilorin, Nigeria
| | - Adeola Agnes Afon
- Phytomedicine, and Biomedical Toxicology Unit, Department of Biochemistry, Afe Babalola University, Ado-Ekiti, Nigeria
| | | | - Basiru Olaitan Ajiboye
- Phytomedicine, and Biomedical Toxicology Unit, Department of Biochemistry, Afe Babalola University, Ado-Ekiti, Nigeria
| | | | - Raphael Taiwo Aruleba
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, South Africa
| | - Tayo Alex Adekiya
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, South Africa
| | - Babatunji Emmanuel Oyinloye
- Phytomedicine, and Biomedical Toxicology Unit, Department of Biochemistry, Afe Babalola University, Ado-Ekiti, Nigeria.,Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, South Africa
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Abstract
In several animal and human studies, the contribution of the endothelium, nitric oxide/soluble guanosine monophosphate (NO/cGMP) pathway, adenylyl cyclase, phosphodiesterase (PDE), potassium (K+) channels, L-type calcium channels, Na+-K+-ATPase, muscarinic acetylcholine receptors, RhoA/Rho-kinase pathway, and cyclooxygenase (COX)/arachidonic acid cascade on the relaxant mechanism of L-cysteine/H2S pathway in corpus cavernosum has been investigated. In this chapter the relaxant mechanisms of H2S in corpus cavernosum is discussed with data available in the current relevant literature. Also, in vitro experimental procedure for mice corpus cavernosum which used to investigate the relaxant effect of H2S is given in detail.
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34
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The effect of diet on BPH, LUTS and ED. World J Urol 2018; 37:1001-1005. [PMID: 30470872 DOI: 10.1007/s00345-018-2568-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/12/2018] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Benign prostatic hyperplasia (BPH) and erectile dysfunction (ED) are common conditions that increase in the aging population. Several environmental factors have been linked to the development and progression of BPH and ED. Several studies have shown potential direct and indirect influences of several micronutrients and macronutrients on the risk of developing these conditions. We reviewed the available published literature of the effect of diet on BPH and ED. METHODS A comprehensive search was performed to identify studies that evaluated how diet affected males with BPH and ED. Searches were run on July 5th, 2018 in the following databases: Ovid MEDLINE®; Ovid EMBASE; and The Cochrane Library (Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials (CENTRAL). There were no language restrictions, publication date restrictions, or article type restrictions on the search strategy. RESULTS We retrieved a total of 1670 results across all databases. After removing any duplicated results, 2 independent reviewers screened a total of 1325 citations. A total of 35 articles were selected for inclusion in this review. Diet is an important factor affecting the risk of development of BPH and ED. Several studies have shown the effect of dietary interventions for BPH and ED. DISCUSSION A better understanding diet and its relative effects on the development, treatment and prevention of these diseases are an important area of further research for the given aging male population.
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35
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Caretta N, De Rocco Ponce M, Minicuci N, Palego P, Valente U, Garolla A, Ferlin A, Foresta C. Penile doppler ultrasound predicts cardiovascular events in men with erectile dysfunction. Andrology 2018; 7:82-87. [DOI: 10.1111/andr.12561] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/20/2018] [Accepted: 10/02/2018] [Indexed: 12/19/2022]
Affiliation(s)
- N. Caretta
- Department of Medicine Section of Endocrinology and Centre for Human Reproduction Pathology University of Padova Padua Italy
| | - M. De Rocco Ponce
- Department of Medicine Section of Endocrinology and Centre for Human Reproduction Pathology University of Padova Padua Italy
| | | | - P. Palego
- Department of Medicine Section of Endocrinology and Centre for Human Reproduction Pathology University of Padova Padua Italy
| | - U. Valente
- Department of Medicine Section of Endocrinology and Centre for Human Reproduction Pathology University of Padova Padua Italy
| | - A. Garolla
- Department of Medicine Section of Endocrinology and Centre for Human Reproduction Pathology University of Padova Padua Italy
| | - A. Ferlin
- Department of Clinical and Experimental Sciences Endocrine and Metabolic Unit University of Brescia Brescia Italy
| | - C. Foresta
- Department of Medicine Section of Endocrinology and Centre for Human Reproduction Pathology University of Padova Padua Italy
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36
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Adefegha SA, Oyeleye SI, Dada FA, Olasehinde TA, Oboh G. Modulatory effect of quercetin and its glycosylated form on key enzymes and antioxidant status in rats penile tissue of paroxetine-induced erectile dysfunction. Biomed Pharmacother 2018; 107:1473-1479. [DOI: 10.1016/j.biopha.2018.08.128] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 08/07/2018] [Accepted: 08/24/2018] [Indexed: 12/16/2022] Open
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37
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Yang BB, Hong ZW, Zhang Z, Yu W, Song T, Zhu LL, Jiang HS, Chen GT, Chen Y, Dai YT. Epalrestat, an Aldose Reductase Inhibitor, Restores Erectile Function in Streptozocin-induced Diabetic Rats. Int J Impot Res 2018; 31:97-104. [PMID: 30214006 PMCID: PMC6462873 DOI: 10.1038/s41443-018-0075-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 05/25/2018] [Accepted: 07/23/2018] [Indexed: 01/03/2023]
Abstract
Epalrestat, an aldose reductase inhibitor (ARI), was adopted to improve the function of peripheral nerves in diabetic patients. The aim of this study was to investigate whether epalrestat could restore the erectile function of diabetic erectile dysfunction using a rat model. From June 2016, 24 rats were given streptozocin (STZ) to induce the diabetic rat model, and epalrestat was administered to ten diabetic erectile dysfunction (DED) rats. Intracavernous pressure (ICP) and mean systemic arterial pressure (MAP), levels of aldose reductase (AR), nerve growth factor (NGF), neuronal nitric oxide synthase (nNOS), α-smooth muscle antigen (α-SMA), and von Willebrand factor (vWF) in the corpus cavernosum were analyzed. We discovered that epalrestat acted on cavernous tissue and partly restored erectile function. NGF and nNOS levels in the corpora were increased after treatment with epalrestat. We also found that the content of α-SMA-positive smooth muscle cells and vWF-positive endothelial cells in the corpora cavernosum were declined. Accordingly, epalrestat might improve erectile function by increasing the upregulation of NGF and nNOS to restore the function of the dorsal nerve of the penis.
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Affiliation(s)
- Bai-Bing Yang
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - Zhi-Wei Hong
- Department of Urology, Fujian Provincial Hospital, Fuzhou, 350000, China
| | - Zheng Zhang
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - Wen Yu
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - Tao Song
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - Lei-Lei Zhu
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - He-Song Jiang
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - Guo-Tao Chen
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China
| | - Yun Chen
- Department of Andrology, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210000, China.
| | - Yu-Tian Dai
- Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210000, China.
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Ajiboye BO, Ojo OA, Okesola MA, Oyinloye BE, Kappo AP. Ethyl acetate leaf fraction of Cnidoscolus aconitifolius (Mill.) I. M. Johnst: antioxidant potential, inhibitory activities of key enzymes on carbohydrate metabolism, cholinergic, monoaminergic, purinergic, and chemical fingerprinting. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1504787] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Basiru Olaitan Ajiboye
- Nutraceutical and Phytomedicine Research Laboratory, Biochemistry Programme, Department of Chemical Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
| | - Oluwafemi Adeleke Ojo
- Nutraceutical and Phytomedicine Research Laboratory, Biochemistry Programme, Department of Chemical Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
| | - Mary Abiola Okesola
- Nutraceutical and Phytomedicine Research Laboratory, Biochemistry Programme, Department of Chemical Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
| | - Babatunji Emmanuel Oyinloye
- Nutraceutical and Phytomedicine Research Laboratory, Biochemistry Programme, Department of Chemical Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
- Biotechnology and Structural Biology (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa
| | - Abidemi Paul Kappo
- Biotechnology and Structural Biology (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa
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39
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Effects of light-emitting diodes irradiation on human vascular endothelial cells. Int J Impot Res 2018; 30:312-317. [PMID: 30046164 DOI: 10.1038/s41443-018-0051-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 05/21/2018] [Accepted: 05/27/2018] [Indexed: 12/28/2022]
Abstract
Endothelial cell proliferation is a hallmark of angiogenesis and plays a key role in the process of tissue repair. Low-intensity (670 nm) laser irradiation influences endothelial cell proliferation in vitro. Light in the near infrared spectrum may have clinical applications in erectile dysfunction. The purpose of this study was to investigate the effects of irradiation with light-emitting diodes (LEDs) at different wavelengths on human vascular endothelial cells in vitro. Human umbilical vein endothelial cells (HUVECs) were irradiated with LEDs at 410, 480, 595, and 630 nm in doses of 1, 2.5, 5, and 10 J/cm2. After 24 h of LED irradiation, effects on cell viability, nitric oxide (NO) secretion, and eNOS expression were assessed by using cell viability assays, Western blot, and real time-polymerase chain reaction, respectively. The cell viability assay demonstrated that irradiation with LEDs at 630 nm significantly increased the proliferation of HUVECs. In addition, irradiation with LEDs at 630 nm was more effective in stimulating NO secretion and eNOS expression from HUVECs than irradiation with LEDs at 410, 480, and 595 nm. Irradiation with LEDs at 630 nm was effective for inducing cell proliferation, NO secretion, and eNOS expression in HUVECs. These results suggest that irradiation with LEDs at 630 nm may be a therapeutic strategy for vasculogenic erectile dysfunction.
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40
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Lee SR, Kim KH, You HS, Fu J, Hsieh TCM, Bhargava V, Raj Rajasekaran M. Characterization of age-related penile microvascular hemodynamic impairment using laser speckle contrast imaging: possible role of increased fibrogenesis. Physiol Rep 2018; 5:5/21/e13481. [PMID: 29122956 PMCID: PMC5688777 DOI: 10.14814/phy2.13481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 09/17/2017] [Indexed: 02/07/2023] Open
Abstract
Current technology for penile hemodynamic evaluations in small animals is invasive and has limitations. We evaluated a novel laser speckle contrast imaging (LSCI) technique to determine age‐related changes in penile microvascular perfusion (PMP) and tested the role of cavernosal muscle (CC) fibrosis mediated by Wnt‐TGF β1 signaling pathways in a mouse model. Ten young (2–3 months) and old (24–28 months) wild‐type C57BL6 male mice were subjected to PMP measured using a LSCI system. Penile blood flow (PBF, peak systolic velocity, PSV) was also measured using a color Doppler ultrasound for comparison. Measurements were made before and after injection of vasoactive drugs: prostaglandin E1 (PGE1) and acetylcholine (ACh). CC was processed for immunohistochemical studies for markers of endothelium and fibrosis. Protein levels were quantified by Western blot.PMP and PBF increased significantly from baseline after injection of vasoactive drugs. Peak PMP after PGE1 and ACh was higher in young mice (225.0 ± 12.0 and 211.3 ± 12.1 AU) compared to old (155.9 ± 7.1 and 162.6 ± 5.1 AU, respectively). PSV after PGE1 was higher in young than old mice (112.7 ± 8.5 vs. 78.2 ± 4.6 mm/sec). PSV after ACh was also higher in young (112.7 ± 5.6 mm/sec) than older mice (69.2 ± 7.1 mm/sec). PMP positively correlated with PSV (r = 0.867, P = 0.001). Immunostaining and Western blot showed increased protein expression of all fibrosis markers with aging. LSCI is a viable technique for evaluating penile hemodynamics. Increased cavernosal fibrosis may cause impaired penile hemodynamics and increased incidence of erectile dysfunction in older men.
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Affiliation(s)
- Seung-Ryeol Lee
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California.,Department of Urology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Ki-Ho Kim
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California.,Department of Urology, Dongguk University College of Medicine, Gyeongju, Korea
| | - Ho-Song You
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California.,Department of Urology, Chonnam National University Hospital, Gwangju, Korea
| | - Johnny Fu
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California
| | - Tung-Chin Mike Hsieh
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California
| | - Valmik Bhargava
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California
| | - M Raj Rajasekaran
- Departments of Urology and Medicine, VA San Diego Health Care System University of California, San Diego, California
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Stein RA, Schmid K, Bolivar J, Swick AG, Joyal SV, Hirsh SP. Kaempferia parviflora ethanol extract improves self-assessed sexual health in men: a pilot study. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2018; 16:249-254. [PMID: 29880257 DOI: 10.1016/j.joim.2018.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 04/25/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Sexual health positively correlates with overall wellbeing. Existing therapeutics to enhance male sexual health are limited by factors that include responsiveness, adherence and adverse effects. As the population ages, safe and effective interventions that preserve male sexual function are needed. Published research suggests that various preparations of Kaempferia parviflora, a plant in the Zingiberaceae (ginger) family, support cardiovascular health and may ameliorate erectile function. OBJECTIVE The aim of this study was to examine the effects of KaempMax™, an ethanol extract of the K. parviflora rhizome, on erectile function in healthy middle-aged and older men. DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS We conducted an open-label, one-arm study on 14 generally healthy males aged 50-68 years with self-reported mild erectile dysfunction, who were not using prescription treatments. Participants took 100 mg KaempMax™ daily for 30 days. MAIN OUTCOME MEASURES Evaluations were conducted at baseline and on the final study assessment. Primary efficacy analyses included the International Index of Erectile Function (IIEF); secondary efficacy analyses included the Global Assessment Question about erectile function. RESULTS Thirteen participants completed the 30-day study. Supplementation with KaempMax™ resulted in statistically significant improvements in erectile function, intercourse satisfaction and total scores on the IIEF questionnaire. KaempMax™ was well tolerated and exhibited an excellent safety profile. CONCLUSION Our results suggest that KaempMax™ may improve erectile function in healthy middle-aged and older men. While the effects were not as pronounced as what might be seen with prescription medication, most participants found them satisfactory. Additional, longer and placebo-controlled clinical trials will be needed. TRIAL REGISTRATION Clinicaltrials.gov identifier NCT03389867.
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Affiliation(s)
- Richard A Stein
- Life Extension, 3600 West Commercial Blvd, Fort Lauderdale, FL 33309, USA.
| | - Kira Schmid
- Life Extension, 3600 West Commercial Blvd, Fort Lauderdale, FL 33309, USA
| | - Jowell Bolivar
- Life Extension, 3600 West Commercial Blvd, Fort Lauderdale, FL 33309, USA
| | - Andrew G Swick
- Life Extension, 3600 West Commercial Blvd, Fort Lauderdale, FL 33309, USA
| | - Steven V Joyal
- Life Extension, 3600 West Commercial Blvd, Fort Lauderdale, FL 33309, USA
| | - Steven P Hirsh
- Life Extension Clinical Research, Inc., 5990 North Federal Highway, Fort Lauderdale, FL 33308, USA
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Relationship between Response to PDE5 Inhibitors and Penile Duplex Doppler Ultrasound in Erectile Dysfunction. Med Sci (Basel) 2018; 6:medsci6020028. [PMID: 29587411 PMCID: PMC6024826 DOI: 10.3390/medsci6020028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/18/2018] [Accepted: 03/22/2018] [Indexed: 01/05/2023] Open
Abstract
The relationship between the results of penile duplex Doppler ultrasound (PDDU) and response to vardenafil was investigated in patients diagnosed with erectile dysfunction (ED). Data from 148 patients with ED were analyzed retrospectively. Patients who did not respond to therapy were classified in to Group I (n = 32), those who responded partially were classified into Group II (n = 40), and complete responders were classified into Group III (n = 76). Age, comorbidities, and vascular and penile pathologies were compared among the three groups. While diabetes mellitus (DM) and dyslipidemia positivity adversely affected the response to treatment, the presence of hypertension (HT), Peyronie’s disease and priapism increased the therapeutic response to the treatment (p < 0.05). Arterial insufficiency was present in 20 (30.3%), 25 (37.9%) and 21 (31.8%) of the patients in Group I, Group II and Group III, respectively (p = 0.001). Venous insufficiency was observed in three (14.3%) patients in Group I and in eight (85.7%) patients in Group III (p = 0.001). Arterial/venous insufficiency was seen in 9 (30%), 14 (46.7%) and 7 (23.3%) of the patients in Group I, Group II and Group III, respectively (p = 0.001). The response rate to treatment was highest in normal patients according to PDDU, followed by patients with venous insufficiency. In addition, it was found that DM decreased the response to treatment, whereas the response increased in cases with HT, priapism and Peyronie’s disease.
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Yin J, Guo YM, Chen P, Xiao H, Wang XH, DiSanto ME, Zhang XH. Testosterone regulates the expression and functional activity of sphingosine-1-phosphate receptors in the rat corpus cavernosum. J Cell Mol Med 2017; 22:1507-1516. [PMID: 29266713 PMCID: PMC5824404 DOI: 10.1111/jcmm.13416] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Accepted: 09/12/2017] [Indexed: 01/29/2023] Open
Abstract
The bioactive lipid sphingosine‐1‐phosphate (S1P) regulates smooth muscle (SM) contractility predominantly via three G protein‐coupled receptors. The S1P1 receptor is associated with nitric oxide (NO)‐mediated SM relaxation, while S1P2 & S1P3 receptors are linked to SM contraction via activation of the Rho‐kinase pathway. This study is to determine testosterone (T) modulating the expression and functional activity of S1P receptors in corpus cavernosum (CC). Adult male Sprague‐Dawley rats were randomly divided into three groups: sham‐operated controls, surgical castration and T supplemented group. Serum S1P levels were detected by high‐performance liquid chromatography. The expression of S1P1‐3 receptors and sphingosine kinases was detected by real‐time RT‐PCR. In vitro organ bath contractility and in vivo intracavernous pressure (ICP) measurement were also performed. T deprivation significantly decreased ICP rise. Meanwhile, surgical castration induced a significant increase in serum S1P level and the expression of S1P2‐3 receptors by twofold (P < 0.05) but a decrease in the expression of S1P1 receptor. Castration also augmented exogenous phenylephrine (PE), S1P, S1P1,3 receptor agonist FTY720‐P contractility and S1P2‐specific antagonist JTE013 relaxation effect. T supplemented could restore the aforementioned changes. We provide novel data that castration increased serum S1P concentration and up‐regulated the expression of S1P2‐3 receptors in CC. Consistently, agonizing S1P receptors induced CCSM contraction and antagonizing mediated relaxation were augmented. This provides the first clear evidence that S1P system dysregulation may contribute to hypogonadism‐related erectile dysfunction (ED), and S1P receptors may be expected as a potential target for treating ED.
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Affiliation(s)
- Jing Yin
- Department of Rehabilitation, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yu-Ming Guo
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ping Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - He Xiao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xing-Huan Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Michael E DiSanto
- Surgery and Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Xin-Hua Zhang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
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Yin J, Guo YM, Chen P, Xiao H, Wang XH, DiSanto ME, Zhang XH. Testosterone regulates the expression and functional activity of sphingosine-1-phosphate receptors in the rat corpus cavernosum. J Cell Mol Med 2017. [DOI: 10.1111/jcmm.13416 29266713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Jing Yin
- Department of Rehabilitation; Zhongnan Hospital of Wuhan University; Wuhan China
| | - Yu-ming Guo
- Department of Urology; Zhongnan Hospital of Wuhan University; Wuhan China
| | - Ping Chen
- Department of Urology; Zhongnan Hospital of Wuhan University; Wuhan China
| | - He Xiao
- Department of Urology; Zhongnan Hospital of Wuhan University; Wuhan China
| | - Xing-huan Wang
- Department of Urology; Zhongnan Hospital of Wuhan University; Wuhan China
| | - Michael E DiSanto
- Surgery and Biomedical Sciences; Cooper Medical School of Rowan University; Camden NJ USA
| | - Xin-hua Zhang
- Department of Urology; Zhongnan Hospital of Wuhan University; Wuhan China
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Elkhoury FF, Rambhatla A, Mills JN, Rajfer J. Cardiovascular Health, Erectile Dysfunction, and Testosterone Replacement: Controversies and Correlations. Urology 2017; 110:1-8. [DOI: 10.1016/j.urology.2017.07.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 07/15/2017] [Accepted: 07/20/2017] [Indexed: 10/19/2022]
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Silva FH, Veiga FJR, Mora AG, Heck RS, De Oliveira CC, Gambero A, Franco-Penteado CF, Antunes E, Gardner JD, Priviero FBM, Claudino MA. A novel experimental model of erectile dysfunction in rats with heart failure using volume overload. PLoS One 2017; 12:e0187083. [PMID: 29095897 PMCID: PMC5667775 DOI: 10.1371/journal.pone.0187083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 10/15/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Patients with heart failure (HF) display erectile dysfunction (ED). However, the pathophysiology of ED during HF remains poorly investigated. OBJECTIVE This study aimed to characterize the aortocaval fistula (ACF) rat model associated with HF as a novel experimental model of ED. We have undertaken molecular and functional studies to evaluate the alterations of the nitric oxide (NO) pathway, autonomic nervous system and oxidative stress in the penis. METHODS Male rats were submitted to ACF for HF induction. Intracavernosal pressure in anesthetized rats was evaluated. Concentration-response curves to contractile (phenylephrine) and relaxant agents (sodium nitroprusside; SNP), as well as to electrical field stimulation (EFS), were obtained in the cavernosal smooth muscle (CSM) strips from sham and HF rats. Protein expression of endothelial NO synthase (eNOS) and neuronal NO synthase (nNOS) and phosphodiestarese-5 in CSM were evaluated, as well as NOX2 (gp91phox) and superoxide dismutase (SOD) mRNA expression. SOD activity and thiobarbituric acid reactive substances (TBARs) were also performed in plasma. RESULTS HF rats display erectile dysfunction represented by decreased ICP responses compared to sham rats. The neurogenic contractile responses elicited by EFS were greater in CSM from the HF group. Likewise, phenylephrine-induced contractions were greater in CSM from HF rats. Nitrergic response induced by EFS were decreased in the cavernosal tissue, along with lower eNOS, nNOS and phosphodiestarese-5 protein expressions. An increase of NOX2 and SOD mRNA expression in CSM and plasma TBARs of HF group were detected. Plasma SOD activity was decreased in HF rats. CONCLUSION ED in HF rats is associated with decreased NO bioavailability in erectile tissue due to eNOS/nNOS dowregulation and NOX2 upregulation, as well as hypercontractility of the penis. This rat model of ACF could be a useful tool to evaluate the molecular alterations of ED associated with HF.
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Affiliation(s)
- Fábio Henrique Silva
- Hematology and Hemotherapy Center, University of Campinas, Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Frederico José Reis Veiga
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - Aline Gonçalves Mora
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - Rodrigo Sader Heck
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - Caroline Candida De Oliveira
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - Alessandra Gambero
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - Carla Fernanda Franco-Penteado
- Hematology and Hemotherapy Center, University of Campinas, Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Jason D. Gardner
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA, United States of America
| | | | - Mário Angelo Claudino
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
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Neuroprotective and Nerve Regenerative Approaches for Treatment of Erectile Dysfunction after Cavernous Nerve Injury. Int J Mol Sci 2017; 18:ijms18081794. [PMID: 28820434 PMCID: PMC5578182 DOI: 10.3390/ijms18081794] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/10/2017] [Accepted: 08/12/2017] [Indexed: 01/02/2023] Open
Abstract
Erectile dysfunction (ED) is a significant cause of reduced quality of life in men and their partners. Cavernous nerve injury (CNI) during pelvic surgery results in ED in greater than 50% of patients, regardless of additional patient factors. ED related to CNI is difficult to treat and typically poorly responsive to first- and second-line therapeutic options. Recently, a significant amount of research has been devoted to exploring neuroprotective and neuroregenerative approaches to salvage erectile function in patients with CNI. In addition, therapeutic options such as neuregulins, immunophilin ligands, gene therapy, stem cell therapy and novel surgical strategies, have shown benefit in pre-clinical, and limited clinical studies. In the era of personalized medicine, these new therapeutic technologies will be the future of ED treatment and are described in this review.
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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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Nahas ARF, Sulaiman SAS. Increased Risk of Osteoporosis in Depressive Patients with Erectile Dysfunction: A Cross-sectional Study from Malaysia. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2017; 9:178-184. [PMID: 28979072 PMCID: PMC5621180 DOI: 10.4103/jpbs.jpbs_64_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Depression imposes numerous changes on depressive men, promoting for low bone mineral density (BMD) and erectile dysfunction (ED), yet no published data on exploring the possible association between these two disorders among depressive men. We therefore investigated whether low BMD is associated with ED among depressive men and highlighted the possible mutual underlying factors that might give rise to these two disorders in this specific group of patients. MATERIALS AND METHODS In this cross-sectional study, 119 depressive men were recruited and their sociodemographic and clinical characteristics were obtained. Erectile function was evaluated using the 5-item International Index of Erectile Function. All patients received a calcaneal BMD scanning. Chi-square test was conducted to determine if a significant association exists between ED and low BMD. RESULTS Of the study participants, ninety patients reported ED, while 29 patients reported no ED. Within the ED group, there was a significantly higher proportion of patients with low BMD compared to the non-ED group (85.6% vs. 62.1%, P = 0.006). In addition, among younger participants (i.e., aged < 50 years old), the difference in T-score between ED patients (Md = -2.2, n = 41) and non-ED patients (Md = -1.3, n = 20) was significant (P = 0.001); but held no significance among older participants. CONCLUSIONS While our findings are considered prefatory, we reported that low BMD was significantly associated with ED in depressive men and that only among young depressive patients, BMD was significantly lower in ED patients compared to non-ED patients. More research investigating these findings and the possible underlying mechanisms for such association are warranted.
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Affiliation(s)
- Abdul Rahman Fata Nahas
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pahang, Malaysia
- Department of Pharmacy Practice, Kulliyyah of Pharmacy, International Islamic University Malaysia, Pahang, Malaysia
| | - Syed Azhar Syed Sulaiman
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pahang, Malaysia
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Ryu JK, Suh JK, Burnett AL. Research in pharmacotherapy for erectile dysfunction. Transl Androl Urol 2017; 6:207-215. [PMID: 28540228 PMCID: PMC5422707 DOI: 10.21037/tau.2016.11.17] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Although oral phosphodiesterase-5 (PDE5) inhibitors are generally accepted as an effective therapy for erectile dysfunction (ED), men with ED from diabetes or radical prostatectomy respond poorly to these drugs. Many researchers have tried to develop novel therapeutics that target alternative molecular pathways. A group of therapeutics belongs to centrally acting agents that target dopamine and melanocortin receptors. The other one is the peripherally acting agents that target soluble guanylate cyclase, Rho-kinase pathway, and Maxi-K channel, etc. Also, a variety of preclinical studies by the application of biotherapies in the concept of therapeutic angiogenesis or neural regeneration as well as anti-fibrosis to regenerate damaged erectile tissue have been reported. This article will address the current therapeutic targets for ED under clinical or preclinical development, including pharmacotherapy and biotherapy which comprises protein therapy and gene therapy. In spite of numerous clinical trials that target alternative pathways, these agents have yet to reach the market. The results from preclinical studies targeting therapeutic angiogenesis, neural regeneration, and anti-fibrosis are promising.
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Affiliation(s)
- Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon 400-711, Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon 400-711, Korea
| | - Arthur L Burnett
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA
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