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Phua TJ. Understanding human aging and the fundamental cell signaling link in age-related diseases: the middle-aging hypovascularity hypoxia hypothesis. FRONTIERS IN AGING 2023; 4:1196648. [PMID: 37384143 PMCID: PMC10293850 DOI: 10.3389/fragi.2023.1196648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/23/2023] [Indexed: 06/30/2023]
Abstract
Aging-related hypoxia, oxidative stress, and inflammation pathophysiology are closely associated with human age-related carcinogenesis and chronic diseases. However, the connection between hypoxia and hormonal cell signaling pathways is unclear, but such human age-related comorbid diseases do coincide with the middle-aging period of declining sex hormonal signaling. This scoping review evaluates the relevant interdisciplinary evidence to assess the systems biology of function, regulation, and homeostasis in order to discern and decipher the etiology of the connection between hypoxia and hormonal signaling in human age-related comorbid diseases. The hypothesis charts the accumulating evidence to support the development of a hypoxic milieu and oxidative stress-inflammation pathophysiology in middle-aged individuals, as well as the induction of amyloidosis, autophagy, and epithelial-to-mesenchymal transition in aging-related degeneration. Taken together, this new approach and strategy can provide the clarity of concepts and patterns to determine the causes of declining vascularity hemodynamics (blood flow) and physiological oxygenation perfusion (oxygen bioavailability) in relation to oxygen homeostasis and vascularity that cause hypoxia (hypovascularity hypoxia). The middle-aging hypovascularity hypoxia hypothesis could provide the mechanistic interface connecting the endocrine, nitric oxide, and oxygen homeostasis signaling that is closely linked to the progressive conditions of degenerative hypertrophy, atrophy, fibrosis, and neoplasm. An in-depth understanding of these intrinsic biological processes of the developing middle-aged hypoxia could provide potential new strategies for time-dependent therapies in maintaining healthspan for healthy lifestyle aging, medical cost savings, and health system sustainability.
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Affiliation(s)
- Teow J. Phua
- Molecular Medicine, NSW Health Pathology, John Hunter Hospital, Newcastle, NSW, Australia
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2
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Argiolas A, Argiolas FM, Argiolas G, Melis MR. Erectile Dysfunction: Treatments, Advances and New Therapeutic Strategies. Brain Sci 2023; 13:802. [PMID: 37239274 PMCID: PMC10216368 DOI: 10.3390/brainsci13050802] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/08/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Erectile dysfunction (ED) is the inability to get and maintain an adequate penile erection for satisfactory sexual intercourse. Due to its negative impacts on men's life quality and increase during aging (40% of men between 40 and 70 years), ED has always attracted researchers of different disciplines, from urology, andrology and neuropharmacology to regenerative medicine, and vascular and prosthesis implant surgery. Locally and/or centrally acting drugs are used to treat ED, e.g., phosphodiesterase 5 inhibitors (first in the list) given orally, and phentolamine, prostaglandin E1 and papaverine injected intracavernously. Preclinical data also show that dopamine D4 receptor agonists, oxytocin and α-MSH analogues may have a role in ED treatment. However, since pro-erectile drugs are given on demand and are not always efficacious, new strategies are being tested for long lasting cures of ED. These include regenerative therapies, e.g., stem cells, plasma-enriched platelets and extracorporeal shock wave treatments to cure damaged erectile tissues. Although fascinating, these therapies are laborious, expensive and not easily reproducible. This leaves old vacuum erection devices and penile prostheses as the only way to get an artificial erection and sexual intercourse with intractable ED, with penile prosthesis used only by accurately selected patients.
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Affiliation(s)
- Antonio Argiolas
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09042 Monserrato, Italy; (F.M.A.); (M.R.M.)
| | - Francesco Mario Argiolas
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09042 Monserrato, Italy; (F.M.A.); (M.R.M.)
| | - Giacomo Argiolas
- General Medicine Unit, Hospital San Michele, ARNAS“G. Brotzu”, Piazzale Ricchi 1, 09100 Cagliari, Italy;
| | - Maria Rosaria Melis
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09042 Monserrato, Italy; (F.M.A.); (M.R.M.)
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Indications and characteristics of penile traction and vacuum erection devices. Nat Rev Urol 2022; 19:84-100. [PMID: 34764451 DOI: 10.1038/s41585-021-00532-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2021] [Indexed: 11/08/2022]
Abstract
A variety of devices are available for the management of patients with erectile dysfunction, Peyronie's disease, penile dysmorphophobia, for support before and after penile prosthesis insertion, and after radical prostatectomy. Traction devices include, but are not limited to, Penimaster PRO (MSP Concept, Berlin, Germany), Andropenis and Andropeyronie (Andromedical, Madrid, Spain), and the Restorex (PathRight Medical, Plymouth, USA). The other type of devices are vacuum devices such the Osbon ErecAid (Timm Medical, MN, USA). Different devices are optimal for different clinical applications, and robust and contemporary clinical data show a variety of strengths and weaknesses for each device. Research currently favours the use of traction devices for improvement of penile curvature and erectile function in patients with Peyronie's disease compared with vacuum devices; Penimaster Pro and Restorex have been shown to be associated with the best outcomes in this indication. Vacuum devices are favoured for treatment of erectile dysfunction and penile length loss after radical prostatectomy; the Osbon ErecAid is the most well-studied device for this indication. Research into other uses of vacuum and traction devices, such as for penile dysmorphophobia or before and after penile prosthesis, is very limited. Compliance, cost and availability remain substantial challenges, and further high-quality evidence is required to clarify the role of traction devices in urology and sexual medicine.
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Ma M, Qin F, Wu C, Xiong W, Yu B, Wei S, Huang C, Xu J, Yang X, Yuan J. Optimal vacuum erectile device therapy regimen for penile rehabilitation in a bilateral cavernous nerve crush rat model. Andrology 2021; 9:894-905. [PMID: 33420755 DOI: 10.1111/andr.12968] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 11/19/2020] [Accepted: 01/04/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Vacuum erectile device (VED) therapy has been widely used in penile rehabilitation after radical prostatectomy; however, there is no consensus on the best regimen. OBJECTIVES To explore an optimal VED therapy regimen in bilateral cavernous nerve crush (BCNC) rat model. MATERIALS AND METHODS Adult male rats were used to measure the effects of different durations (1-30 min) of VED treatment on penile length, penile blood gas analysis, and adverse effects. Forty-eight adult male rats were randomly divided into Sham, BCNC, and VED treatment groups (2-3-2-3 min, 4-3-3 min, 5-5 min, and 10 min). Penile length, erectile function, and side effects were detected after VED treatment. Histopathological staining and Western blotting were performed to explore the cellular and molecular changes. RESULTS Prolongation of the duration of VED treatment significantly decreased the penile oxygen saturation, partial oxygen pressure, and arterial blood ratio (P < 0.05). Compared with the BCNC group, all VED treatment regimens partially reversed BCNC-induced penile shortening and erectile dysfunction (P < 0.0001), with the 4-3-3-min and 5-5-min treatment groups exhibiting more significant improvement than the 10-min and 2-3-2-3-min treatment groups (P < 0.0001). The mechanism may be related to the up-regulation of the smooth muscle cell/collagen ratio, endothelial nitric oxide synthase, and α-smooth muscle actin (all P < 0.0001); and the down-regulation of hypoxia-inducible factor-1α, transforming growth factor-β1, and apoptosis (all P < 0.0001). The incidence of adverse effects in the 2-3-2-3-min treatment group was the highest. DISCUSSION The commonly used VED therapy regimens maintained erectile function and penile length of BCNC rat by relieving hypoxia and fibrosis, and no further benefits were observed with increased treatment frequency or prolonged treatment duration. CONCLUSION Two consecutive 5-min treatments with a short interval is the optimal VED therapy regimen for penile rehabilitation in BCNC rat model.
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Affiliation(s)
- Ming Ma
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Feng Qin
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Changjing Wu
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Wenfeng Xiong
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Botao Yu
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Shanzun Wei
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Chunxu Huang
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Jianrong Xu
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Xinzong Yang
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Jiuhong Yuan
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
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Kinnaird W, Kirby MG, Mitra A, Davda R, Jenkins V, Payne H. The management of sexual dysfunction resulting from radiotherapy and androgen deprivation therapy to treat prostate cancer: A comparison of uro-oncology practice according to disease stage. Int J Clin Pract 2021; 75:e13873. [PMID: 33260255 DOI: 10.1111/ijcp.13873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/15/2020] [Accepted: 11/25/2020] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES To establish current uro-oncology practice in the management of sexual dysfunction (SD) following radiotherapy (RT) and/or androgen deprivation therapy (ADT) to treat prostate cancer. To identify differences in approach to the management of SD according to disease stage. SUBJECTS AND METHODS A 14-question mixed methods survey was designed to assess the current UK practice. Closed- and open-ended questions were used to quantify results while allowing participants to expand on answers. The survey was distributed to members of the British Uro-Oncology Group at the 2019 annual meeting. RESULTS Surveys were completed by 63 uro-oncologists attending the annual meeting of the British Uro-Oncology Group (response rate 66%). The major issue highlighted was a difference in approach to managing SD according to disease stage. More than half of the participants (56%) said 'advanced stage of disease' was a barrier to discussing SD. Clinicians were less likely to discuss SD, take baseline assessments, refer to a specialist clinic or offer rehabilitation when dealing with patients with advanced disease. Only a minority said that the management of SD was primarily their responsibility (11%). Nearly all clinicians (92%) had access to SD clinics; however, the majority of clinicians did not routinely refer patients. CONCLUSIONS This study shows that men with advanced prostate cancer need better support in managing SD. Patients receiving long-term ADT are less likely to be offered any kind of help or intervention. Specific guidance on managing SD in this cohort may result in improvements in sexual function, emotional well-being, quality of life, mental health and confidence.
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Affiliation(s)
- William Kinnaird
- University College London Hospitals NHS Foundation Trust, London, United Kingdom
| | | | - Anita Mitra
- University College London Hospitals NHS Foundation Trust, London, United Kingdom
| | - Reena Davda
- University College London Hospitals NHS Foundation Trust, London, United Kingdom
| | - Valerie Jenkins
- Sussex Health Outcomes Research and Education in Cancer, Brighton and Sussex Medical School, University of Sussex, Brighton, United Kingdom
| | - Heather Payne
- University College London Hospitals NHS Foundation Trust, London, United Kingdom
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Zhang DL, Chen Z, Wang FX, Zhang J, Xie H, Wang ZY, Gu YB, Fu Q, Song LJ. Adding a vacuum erection device to regular use of Tadalafil improves penile rehabilitation after posterior urethroplasty. Asian J Androl 2020; 21:582-586. [PMID: 31169141 PMCID: PMC6859665 DOI: 10.4103/aja.aja_50_19;] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study aimed to evaluate whether adding a vacuum erection device (VED) to regular use of Tadalafil could achieve better penile rehabilitation following posterior urethroplasty for pelvic fracture-related urethral injury (PFUI). Altogether, 78 PFUI patients with erectile dysfunction (ED) after primary posterior urethroplasty were enrolled and divided into two treatment groups: VED combined with Tadalafil (Group 1, n = 36) and Tadalafil only (Group 2, n = 42). Changes in penile length, testosterone level, International Index of Erectile Function-5 (IIEF-5) questionnaire, Quality of Erection Questionnaire (QEQ), and nocturnal penile tumescence (NPT) testing were used to assess erectile function before and after 6 months of ED treatment. Results showed that the addition of VED to regular use of Tadalafil preserved more penile length statistically (0.4 ± 0.9 vs −0.8 ± 0.7 cm, P < 0.01). IIEF-5 score and QEQ score in Group 1 were higher than Group 2 (both P < 0.05). After treatment, 21/36 (58.3%) Group 1 patients and 19/42 (45.2%) Group 2 patients could complete vaginal penetration. Group 1 patients also had markedly improved testosterone levels (P = 0.01). Unexpectedly, there was no significant difference in NPT testing between two therapies. For PFUI patients with ED after posterior urethroplasty, the addition of VED to regular use of Tadalafil could significantly improve their conditions – improving erection and increasing penile length – thus increasing patient satisfaction and confidence in penile rehabilitation.
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Affiliation(s)
- Dong-Liang Zhang
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Zhong Chen
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Fei-Xiang Wang
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai 200233, China
| | - Jiong Zhang
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Hong Xie
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Ze-Yu Wang
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Yu-Bo Gu
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Qiang Fu
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
| | - Lu-Jie Song
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Oriental Institute for Urologic Reconstruction, Shanghai 200233, China
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Penile Length and Its Preservation in Men After Radical Prostatectomy. CURRENT SEXUAL HEALTH REPORTS 2019. [DOI: 10.1007/s11930-019-00226-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Setia SA, Levine LA. Devices for penile traction: the long and winding road to treating Peyronie's disease. Expert Rev Med Devices 2018; 15:517-526. [PMID: 30016597 DOI: 10.1080/17434440.2018.1502083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Penile traction therapy (PTT) is increasingly being recognized as a viable nonsurgical approach to Peyronie's disease (PD). The goal of this article is to review the current literature on PTT with attention to traction protocols, devices, and outcomes. AREAS COVERED Literature on the pathophysiology of PD, PTT as primary and adjunctive treatment for PD, perioperative use of PTT, and vacuum erection devices are all reviewed. Pertinent literature was obtained from the PubMed database. The key words 'penile traction,' 'mechanotransduction,' and 'Peyronie's disease' were searched and results were narrowed down based on relevance to the review. EXPERT COMMENTARY PTT appears beneficial but the true magnitude of effect is difficult to discern. Most studies are not randomized, have small sample sizes, lack control arms, or have varying traction protocols. Patient compliance is critical and new devices and traction protocols are needed to maximize the benefit of PTT.
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Affiliation(s)
- Shaan A Setia
- a Rush University Medical Center - Urology , Chicago , Illinois , USA
| | - Laurence A Levine
- a Rush University Medical Center - Urology , Chicago , Illinois , USA
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Li J, Wang S, Qin F, Zhu M, You X, Wu C, Fu F, Yuan J. Reduction in Peyronie's-like plaque size using a vacuum erection device in a rat model of Peyronie's disease via the TGF-β/SMAD signalling pathway. Andrologia 2018; 50:e13051. [PMID: 29806152 DOI: 10.1111/and.13051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/22/2018] [Accepted: 04/15/2018] [Indexed: 02/06/2023] Open
Affiliation(s)
- Jinhong Li
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
- Department of Urology; Institute of Urology; West China Hospital; Sichuan University; Chengdu China
| | - Shuzhen Wang
- Laboratory of Infectious Disease and Vaccine; West China Hospital; Sichuan University; Chengdu China
| | - Feng Qin
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
| | - Mengli Zhu
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
| | - Xuanhe You
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
| | - Changjing Wu
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
| | - Fudong Fu
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
| | - Jiuhong Yuan
- Andrology Laboratory; West China Hospital; Sichuan University; Chengdu China
- Department of Urology; Institute of Urology; West China Hospital; Sichuan University; Chengdu China
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Blecher G, Almekaty K, Kalejaiye O, Minhas S. Does penile rehabilitation have a role in the treatment of erectile dysfunction following radical prostatectomy? F1000Res 2017; 6:1923. [PMID: 29152231 PMCID: PMC5664996 DOI: 10.12688/f1000research.12066.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/01/2017] [Indexed: 12/17/2022] Open
Abstract
In men undergoing radical treatment for prostate cancer, erectile function is one of the most important health-related quality-of-life outcomes influencing patient choice in treatment. Penile rehabilitation has emerged as a therapeutic measure to prevent erectile dysfunction and expedite return of erectile function after radical prostatectomy. Penile rehabilitation involves a program designed to increase the likelihood of return to baseline-level erectile function, as opposed to treatment, which implies the therapeutic treatment of symptoms, a key component of post–radical prostatectomy management. Several pathological theories form the basis for rehabilitation, and a plethora of treatments are currently in widespread use. However, whilst there is some evidence supporting the concept of penile rehabilitation from animal studies, randomised controlled trials are contradictory in outcomes. Similarly, urological guidelines are conflicted in terms of recommendations. Furthermore, it is clear that in spite of the lack of evidence for the role of penile rehabilitation, many urologists continue to employ some form of rehabilitation in their patients after radical prostatectomy. This is a significant burden to health resources in public-funded health economies, and no effective cost-benefit analysis has been undertaken to support this practice. Thus, further research is warranted to provide both scientific and clinical evidence for this contemporary practice and the development of preventative strategies in treating erectile dysfunction after radical prostatectomy.
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Affiliation(s)
- Gideon Blecher
- University College London Hospitals NHS Foundation Trust, 16-18 Westmoreland Street, London, W1G 8PH, UK
| | - Khaled Almekaty
- University College London Hospitals NHS Foundation Trust, 16-18 Westmoreland Street, London, W1G 8PH, UK.,Urology Department, Tanta University, Tanta, Egypt
| | - Odunayo Kalejaiye
- University College London Hospitals NHS Foundation Trust, 16-18 Westmoreland Street, London, W1G 8PH, UK
| | - Suks Minhas
- University College London Hospitals NHS Foundation Trust, 16-18 Westmoreland Street, London, W1G 8PH, UK
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Qi T, Ye L, Wang B, Zhang B, Chen J. Comparison of the effects of extracorporeal shock wave therapy and a vacuum erectile device on penile erectile dysfunction: a randomized clinical trial. Medicine (Baltimore) 2017; 96:e8414. [PMID: 29095274 PMCID: PMC5682793 DOI: 10.1097/md.0000000000008414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND This randomized clinical trial (October 2012-December 2013) compared extracorporeal shock wave therapy (ESWT) and a vacuum erectile device (VED) for management of erectile dysfunction (ED). METHODS Consecutive Chinese patients (20-55 years) with ED, abnormal nocturnal penile tumescence and rigidity (NPTR), and international index of erectile function-5 items (IIEF-5) score <22 were randomized to receive ESWT or VED (twice weekly, 4 weeks). Primary outcomes were treatment efficacy and success rate 4 weeks after completion of therapy. Secondary outcomes included changes in IIEF-5 score, sex encounter profile (SEP) score, erection hardness score (EHS) and NPTR assessments 4 weeks post-therapy. All enrolled patients (n = 30 per group) completed the study. At baseline, age, IIEF-5 score, SEP score, EHS, and NPTR assessments were similar between groups. RESULTS Four weeks post-therapy, IIEF-5 score increased in the ESWT (15.03 ± 3.00 vs. 11.60 ± 2.28) and VED (15.10 ± 3.06 vs. 11.53 ± 2.27) groups, as did SEP score, EHS, and NPTR measures (all P < .05). Efficacy in the ESWT and VED groups was excellent in 10% and 13.3%, respectively, and moderate in 63.3% and 53.3%, respectively. Treatment success rate in the ESWT and VED groups was 73.3% and 67.7%, respectively. CONCLUSION VED use and ESWT have comparable efficacies in the treatment of ED in Chinese patients.
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Clavell-Hernández J, Wang R. The controversy surrounding penile rehabilitation after radical prostatectomy. Transl Androl Urol 2017; 6:2-11. [PMID: 28217445 PMCID: PMC5313301 DOI: 10.21037/tau.2016.08.14] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Radical prostatectomy (RP) techniques have been refined in the last few decades. Despite nerve-sparing surgery, erectile dysfunction (ED) still seems to be affecting more than half of patients undergoing RP. Penile rehabilitation consists of understanding the mechanisms that affect erectile function (EF) and utilizing pharmacologic agents, devices or interventions to promote male sexual function before and after any insult to the penile erectile physiologic axis. There currently is a limited amount of clinical trials that assess treatments with the goal of recovering post-prostatectomy EF. The goal of this article is to assess a contemporary series of trials that study penile rehabilitation. Although the current evidence lacks to prove its irrefutable effectiveness, advancements in research and technology forecast a promising future in penile rehabilitation management.
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Affiliation(s)
- Jonathan Clavell-Hernández
- Division of Urology, Department of Surgery, University of Texas Medical School at Houston, Houston, Texas, USA
| | - Run Wang
- Division of Urology, Department of Surgery, University of Texas Medical School at Houston, Houston, Texas, USA;; University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Lee JKC, Tan RBW, Chung E. Erectile dysfunction treatment and traditional medicine-can East and West medicine coexist? Transl Androl Urol 2017; 6:91-100. [PMID: 28217454 PMCID: PMC5313309 DOI: 10.21037/tau.2016.11.13] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Erectile dysfunction (ED) is a common sexual problem affecting many men irrespective of cultures, beliefs and nationalities. While medical therapy for ED has been revolutionized by the advent of oral phosphodiesterase type 5 inhibitors and intracavernosal injection of vasoactive agents, recent technological advances such stem cell therapy, low intensity shock wave and newer generation of penile prosthesis implant offer hope to men who do not respond to conventional medical therapy. In contrast, traditional and complementary medicine (TCM) focuses on the restoration and better overall bodily regulation with the use of various herbal and animal products as well as exercises to invigorate qi (energy) in vital organs. Western medicine involves an analysis of ED symptom and underlying causes that contribute to ED, while TCM emphases the concept of holism and harmonization of body organs to achieve natural sexual life. The following article reviews our current understanding regarding the philosophical approach, and evaluates the evidence surrounding various ED therapies between mainstream Western Medicine and TCM.
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Affiliation(s)
- Joe K C Lee
- Department of Urology, National University Hospital, Singapore 119074, Singapore
| | - Ronny B W Tan
- Department of Urology, Tan Tock Seng Hospital, Singapore ; Lee Kong Chiang School of Medicine, Nanyang Technological University, Singapore - Imperial College, London, UK
| | - Eric Chung
- Department of Urology, Princess Alexandra Hospital, University of Queensland, Brisbane, Australia;; Andro Urology Centre, St Andrew's War Memorial Hospital, Brisbane, Australia
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Qian SQ, Gao L, Wei Q, Yuan J. Vacuum therapy in penile rehabilitation after radical prostatectomy: review of hemodynamic and antihypoxic evidence. Asian J Androl 2017; 18:446-51. [PMID: 26289397 PMCID: PMC4854102 DOI: 10.4103/1008-682x.159716] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Generally, hypoxia is a normal physiological condition in the flaccid penis, which is interrupted by regular nocturnal erections in men with normal erectile function.1 Lack of spontaneous and nocturnal erections after radical prostatectomy due to neuropraxia results in persistent hypoxia of cavernosal tissue, which leads to apoptosis and degeneration of cavernosal smooth muscle fibers. Therefore, overcoming hypoxia is believed to play a crucial role during neuropraxia. The use of a vacuum erectile device (VED) in penile rehabilitation is reportedly effective and may prevent loss of penile length. The corporal blood after VED use is increased and consists of both arterial and venous blood, as revealed by color Doppler sonography and blood gas analysis. A similar phenomenon was observed in negative pressure wound therapy (NPWT). However, NPWT employs a lower negative pressure than VED, and a hypoperfused zone, which increases in response to negative pressure adjacent to the wound edge, was observed. Nonetheless, questions regarding ideal subatmospheric pressure levels, modes of action, and therapeutic duration of VED remain unanswered. Moreover, it remains unclear whether a hypoperfused zone or PO2 gradient appears in the penis during VED therapy. To optimize a clinical VED protocol in penile rehabilitation, further research on the mechanism of VED, especially real-time PO2 measurements in different parts of the penis, should be performed.
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Affiliation(s)
| | | | | | - Jiuhong Yuan
- The Andrology Laboratory, West China Hospital, Sichuan University, Chengdu 610041; Department of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
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Clavell-Hernandez J, Wang R. Penile rehabilitation following prostate cancer treatment: review of current literature. Asian J Androl 2016; 17:916-22; discussion 921. [PMID: 25851656 PMCID: PMC4814961 DOI: 10.4103/1008-682x.150838] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Radical prostatectomy (RP) and radiotherapy (RT) are highly effective in improving prostate cancer survival. However, both have a detrimental effect on erectile function (EF). Penile rehabilitation consists of understanding the mechanisms that cause erectile dysfunction (ED) and utilizing pharmacologic agents, devices or interventions to promote male sexual function. For the past decade, many researchers have pursued to define effective treatment modalities to improve ED after prostate cancer treatment. Despite the understanding of the mechanisms and well-established rationale for postprostate treatment penile rehabilitation, there is still no consensus regarding effective rehabilitation programs. This article reviews a contemporary series of trials that assess penile rehabilitation and explore treatment modalities that might play a role in the future. Published data and trials related to penile rehabilitation after RP and RT were reviewed and presented. Although recent trials have shown that most therapies are well-tolerated and aid in some degree on EF recovery, we currently do not have tangible evidence to recommend an irrefutable penile rehabilitation algorithm. However, advancements in research and technology will ultimately create and refine management options for penile rehabilitation.
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Affiliation(s)
| | - Run Wang
- Division of Urology, University of Texas Medical School at Houston, Department of Urology, Houston, Texas; University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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Erection rehabilitation following prostatectomy — current strategies and future directions. Nat Rev Urol 2016; 13:216-25. [DOI: 10.1038/nrurol.2016.47] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kadıoğlu A, Ortaç M, Brock G. Pharmacologic and surgical therapies for sexual dysfunction in male cancer survivors. Transl Androl Urol 2016; 4:148-59. [PMID: 26816821 PMCID: PMC4708121 DOI: 10.3978/j.issn.2223-4683.2014.12.03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The recent recognition that many men experience sexual dysfunction following their diagnosis and treatment of genitourinary cancers, has led to the development multiple varied strategies that attempt to restore or preserve that function. In this manuscript we review the understanding of why it happens, highlight novel management strategies and discuss the concept of penile rehabilitation (PR) following prostate cancer (PCa) treatment, glans preserving strategies among men diagnosed with penile cancer and address the controversial issue of testosterone therapy in men with PCa.
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Affiliation(s)
- Ateş Kadıoğlu
- 1 Department of Urology, Istanbul Faculty of Medicine, Istanbul, Turkey ; 2 University of Western Ontario, London, Ontario, Canada
| | - Mazhar Ortaç
- 1 Department of Urology, Istanbul Faculty of Medicine, Istanbul, Turkey ; 2 University of Western Ontario, London, Ontario, Canada
| | - Gerald Brock
- 1 Department of Urology, Istanbul Faculty of Medicine, Istanbul, Turkey ; 2 University of Western Ontario, London, Ontario, Canada
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Welliver C, Kottwitz M, Ahmad AE, Wilson SK, Köhler TS. Manufacturers' data show increasing implanted cylinder sizes and measured corporal lengths in inflatable penile implants. World J Urol 2015; 34:993-8. [PMID: 26475275 DOI: 10.1007/s00345-015-1705-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/03/2015] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION We sought to determine whether measured corporal length (MCL) or implanted device size (IDS) has changed. METHODS Data were obtained from the two major penile implant companies from the years of 2005-2010 and analyzed. While we requested similar data, companies supplied information at their discretion with MCL provided by American Medical Systems and IDS provided by Coloplast. Intra-patient corporal discrepancies, disease state effects, rear tip extenders (RTEs) use and place of implantation were also provided in some part by companies. RESULTS MCL and IDS increased during the study period. Despite the general trend of MCL/IDS, clinically significant (0.5 cm or greater) decreases in MCLs were noted in patients with Peyronie's disease (PD) or a history of radical pelvic surgery (excludes prostatectomy). In only 2.7 % of cases was there an intra-patient discrepancy in cylinder size (>1 cm). IDS was longer in the USA (US, 19.4 cm) compared to outside the US (OUS, 17.7 cm, p < 0.0001). Cylinders were implanted without RTEs in 48.3 % of US cases and 73.7 % of OUS cases (p < 0.0001). In Coloplast devices there was an overall statistically significant change in the use of 16 cm (less utilized) and 20 and 22 cm (more utilized) cylinder lengths during the study period in US implants. CONCLUSION MCL and IDS increased during the study period. Men with a history of PD or radical pelvic surgery are at highest risk to have shorter MCL and to possibly receive shorter implants. Intra-patient IDS inconsistency is rare and should prompt investigation.
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Affiliation(s)
- Charles Welliver
- Division of Urology, Albany Medical College, 23 Hackett Boulevard, Albany, NY, 12208, USA. .,Division of Urology, Albany Stratton Veterans Affairs Hospital, Albany, NY, USA. .,Urological Institute of Northeastern New York, Albany, NY, USA.
| | - Michael Kottwitz
- Division of Urology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Ardalan E Ahmad
- Division of Urology, University of Toronto, Toronto, ON, Canada
| | | | - Tobias S Köhler
- Division of Urology, Southern Illinois University School of Medicine, Springfield, IL, USA
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Weyne E, Castiglione F, Van der Aa F, Bivalacqua TJ, Albersen M. Landmarks in erectile function recovery after radical prostatectomy. Nat Rev Urol 2015; 12:289-97. [PMID: 25868558 DOI: 10.1038/nrurol.2015.72] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The description of the nerve-sparing technique of radical prostatectomy by Walsh was one of the major breakthroughs in the surgical treatment of prostate cancer in the 20(th) century. However, despite this advance and consequent technological refinements to nerve-sparing surgery, a large proportion of men still suffer from erectile dysfunction (ED) as a complication of prostatectomy. A plethora of therapeutic approaches have been proposed to optimize erectile function recovery in these patients. Several preclinical and translational studies have shown benefits of therapies including PDE5 inhibitor (PDE5I) treatment, immunomodulation, neurotrophic factor administration, and regenerative techniques, such as stem cell therapy, in animal models. However, most of these approaches have either failed to translate to clinical use or have yet to be studied in human subjects. Penile rehabilitation with PDE5Is is currently the most commonly used clinical strategy, in spite of the absence of solid clinical evidence to support its use.
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Affiliation(s)
- Emmanuel Weyne
- Laboratory for Experimental Urology, Department of Development and Regeneration, University of Leuven, Herestraat 49, Box 802, 3000 Leuven, Belgium
| | - Fabio Castiglione
- Urological Research Institute, San Raffaele Scientific Institution, via Olgettina 60, 20132 Milano, Italy
| | - Frank Van der Aa
- Laboratory for Experimental Urology, Department of Development and Regeneration, University of Leuven, Herestraat 49, Box 802, 3000 Leuven, Belgium
| | - Trinity J Bivalacqua
- The James Buchanan Brady Urological Institute, Department of Urology, Johns Hopkins Medical Institutions, 600 N. Wolfe Street, Marburg 420, Baltimore, MD 21287, USA
| | - Maarten Albersen
- Laboratory for Experimental Urology, Department of Development and Regeneration, University of Leuven, Herestraat 49, Box 802, 3000 Leuven, Belgium
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Abstract
Many therapies for erectile dysfunction (ED) after prostate cancer treatment improve erectile firmness, yet, most couples stop using aids within 1-2 years. Patients and partners who expect immediate and complete success with their first ED treatment can be demoralized when they experience treatment failure, which contributes to reticence to explore other ED aids. Comprehensive patient education should improve sustainability and satisfaction with ED treatments. Pre-emptive and realistic information should be provided to couples about the probability of recovering natural erections. Beginning intervention early and using a couple-based approach is ideal. Recommendations are provided about the timing of ED treatment, the order of aid introduction, and combination therapies. Renegotiation of sexual activity is an essential part of sexual adaptation. From the outset of therapy, couples should be encouraged to broaden their sexual repertoire, incorporate erection-independent sexual activities, and continue to be sexual despite ED and reduced libido.
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White ID, Wilson J, Aslet P, Baxter AB, Birtle A, Challacombe B, Coe J, Grover L, Payne H, Russell S, Sangar V, Van As N, Kirby M. Development of UK guidance on the management of erectile dysfunction resulting from radical radiotherapy and androgen deprivation therapy for prostate cancer. Int J Clin Pract 2015; 69:106-23. [PMID: 25283500 PMCID: PMC4309408 DOI: 10.1111/ijcp.12512] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
AIM To develop a management strategy (rehabilitation programme) for erectile dysfunction (ED) after radiotherapy (RT) or androgen deprivation therapy (ADT) for prostate cancer that is suitable for use in a UK NHS healthcare context. METHODS PubMed literature searches of ED management in this patient group together with a survey of 28 experts in the management of treatment-induced ED from across the UK were conducted. RESULTS Data from 19 articles and completed questionnaires were collated. The findings discussed in this article confirm that RT/ADT for prostate cancer can significantly impair erectile function. While many men achieve erections through PDE5-I use, others need combined management incorporating exercise and lifestyle modifications, psychosexual counselling and other erectile aids. This article offers a comprehensive treatment algorithm to manage patients with ED associated with RT/ADT. CONCLUSION Based on published research literature and survey analysis, recommendations are proposed for the standardisation of management strategies employed for ED after RT/ADT. In addition to implementing the algorithm, understanding the rationale for the type and timing of ED management strategies is crucial for clinicians, men and their partners.
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Affiliation(s)
- I D White
- Urology Unit, The Royal Marsden NHS Foundation Trust, London & Sutton, UK
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Yang F, Zhao JF, Shou QY, Huang XJ, Chen G, Yang KB, Zhang SG, Lv BD, Fu HY. Phenotypic modulation of corpus cavernosum smooth muscle cells in a rat model of cavernous neurectomy. PLoS One 2014; 9:e105186. [PMID: 25127037 PMCID: PMC4134279 DOI: 10.1371/journal.pone.0105186] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 07/17/2014] [Indexed: 02/02/2023] Open
Abstract
Background Patients undergoing radical prostatectomy (RP) are at high risk for erectile dysfunction (ED) due to potential cavernous nerve (CN) damage during surgery. Penile hypoxia after RP is thought to significantly contribute to ED pathogenesis. Aim We previously showed that corpora cavernosum smooth muscle cells (CCSMCs) undergo phenotypic modulation under hypoxic conditions in vitro. Here, we studied such changes in an in vivo post-RP ED model by investigating CCSMCs in bilateral cavernous neurectomy (BCN) rats. Methods Sprague-Dawley rats underwent sham (n = 12) or BCN (n = 12) surgery. After 12 weeks, they were injected with apomorphine to determine erectile function. The penile tissues were harvested and assessed for fibrosis using Masson trichrome staining and for molecular markers of phenotypic modulation using immunohistochemistry and western blotting. CCSMC morphological structure was evaluated by hematoxylin-eosin (H&E) staining and transmission electron microscopy (TEM). Results Erectile function was significantly lower in BCN rats than in sham rats. BCN increased hypoxia-inducible factor-1α and collagen protein expression in corpora cavernous tissue. H&E staining and TEM showed that CCSMCs in BCN rats underwent hypertrophy and showed rough endoplasmic reticulum formation. The expression of CCSMC phenotypic markers, such as smooth muscle α-actin, smooth muscle myosin heavy chain, and desmin, was markedly lower, whereas vimentin protein expression was significantly higher in BCN rats than in control rats. Conclusions CCSMCs undergo phenotype modulation in rats with cavernous neurectomy. The results have unveiled physiological transformations that occur at the cellular and molecular levels and have helped characterize CN injury–induced ED.
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Affiliation(s)
- Fan Yang
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jian F. Zhao
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qi Y. Shou
- Laboratory Animal Research Center, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiao J. Huang
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Gang Chen
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ke B. Yang
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shi G. Zhang
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Bo D. Lv
- Department of Urology, The Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, China
- Andrology Laboratory on Integration of Chinese and Western Medicine, Zhejiang provincial Key Laboratory of Traditional Chinese Medicine, Hangzhou, China
- * E-mail: (BDL); (HYF)
| | - Hui Y. Fu
- Central Laboratory, The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Andrology Laboratory on Integration of Chinese and Western Medicine, Zhejiang provincial Key Laboratory of Traditional Chinese Medicine, Hangzhou, China
- * E-mail: (BDL); (HYF)
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