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1.
Int J Impot Res ; 35(6): 558-563, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35915329

RESUMO

Concomitant sexual disorders have progressively shown increased prevalence in men at first outpatient presentation. We sought to i) estimate the prevalence of unreported premature ejaculation (PE) in a homogenous cohort of 1258 men seeking first medical help for erectile dysfunction (ED) as their primary compliant; ii) compare the baseline sociodemographic and clinical characteristics of men with only ED(ED-only) compared to those with ED and PE(ED + PE); and, iii) investigate the likelihood of detecting PE among men self-reporting only ED over a 16-year period at a single tertiary-referral centre. Descriptive statistics compared sociodemographic and clinical characteristics between ED-only patients and those with unreported concomitant primary/secondary PE(ED + PE). Logistic regression models predicted the risk of having ED + PE at baseline. Local polynomial regression models graphically explored the probability of reporting PE among ED men with ≤40 vs. 41-60 vs. >60 years over the analysed timeframe. Of all, 932 (74.1%) were ED-only and 326 (25.9%) ED + PE patients, respectively. ED + PE patients were younger, presented with fewer comorbidities, and lower rates of severe ED (all p ≤ 0.04). At multivariable logistic regression analysis, younger age (OR:0.98) and low sexual desire/interest (OR:1.54) were independently associated with ED + PE at first clinical assessment (all p = 0.03). The likelihood of detecting unreported concomitant primary/secondary PE among patients complaining of only ED at first presentation worrisomely increased among younger and middle-aged men over the last 16 years.


Assuntos
Disfunção Erétil , Ejaculação Precoce , Masculino , Pessoa de Meia-Idade , Humanos , Disfunção Erétil/fisiopatologia , Ejaculação Precoce/complicações , Ejaculação Precoce/epidemiologia , Ejaculação Precoce/diagnóstico , Estudos Transversais , Comportamento Sexual , Libido
4.
Cells ; 11(1)2022 01 05.
Artigo em Inglês | MEDLINE | ID: mdl-35011733

RESUMO

Lithium has been a mainstay of therapy for patients with bipolar disorders for several decades. However, it may exert a variety of adverse effects that can affect patients' compliance. Sexual and erectile dysfunction has been reported in several studies by patients who take lithium as monotherapy or combined with other psychotherapeutic agents. The exact mechanisms underlying such side effects of lithium are not completely understood. It seems that both central and peripheral mechanisms are involved in the lithium-related sexual dysfunction. Here, we had an overview of the epidemiology of lithium-related sexual and erectile dysfunction in previous clinical studies as well as possible pathologic pathways that could be involved in this adverse effect of lithium based on the previous preclinical studies. Understanding such mechanisms could potentially open a new avenue for therapies that can overcome lithium-related sexual dysfunction and improve patients' adherence to the medication intake.


Assuntos
Disfunção Erétil/tratamento farmacológico , Lítio/uso terapêutico , Animais , Modelos Animais de Doenças , Disfunção Erétil/epidemiologia , Disfunção Erétil/patologia , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Modelos Biológicos
5.
Medicine (Baltimore) ; 100(41): e27508, 2021 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-34731136

RESUMO

BACKGROUND: Erectile dysfunction is a disease commonly caused by diabetes mellitus (DMED) and cavernous nerve injury (CNIED). Bioinformatics analyses including differentially expressed genes (DEGs), enriched functions and pathways (EFPs), and protein-protein interaction (PPI) networks were carried out in DMED and CNIED rats in this study. The critical biomarkers that may intervene in nitric oxide synthase (NOS, predominantly nNOS, ancillary eNOS, and iNOS)-cyclic guanosine monophosphate (cGMP)-phosphodiesterase 5 enzyme (PDE5) pathway, an important mechanism in erectile dysfunction treatment, were then explored for potential clinical applications. METHODS: GSE2457 and GSE31247 were downloaded. Their DEGs with a |logFC (fold change)| > 0 were screened out. Database for Annotation, Visualization and Integrated Discovery (DAVID) online database was used to analyze the EFPs in Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes networks based on down-regulated and up-regulated DEGs respectively. PPI analysis of 2 datasets was performed in Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) and Cytoscape. Interactions with an average score greater than 0.9 were chosen as the cutoff for statistical significance. RESULTS: From a total of 1710 DEGs in GSE2457, 772 were down-regulated and 938 were up-regulated, in contrast to the 836 DEGs in GSE31247, from which 508 were down-regulated and 328 were up-regulated. The 25 common EFPs such as aging and response to hormone were identified in both models. PPI results showed that the first 10 hub genes in DMED were all different from those in CNIED. CONCLUSIONS: The intervention of iNOS with the hub gene complement component 3 in DMED and the aging process in both DMED and CNIED deserves attention.


Assuntos
Biomarcadores/metabolismo , Nucleotídeo Cíclico Fosfodiesterase do Tipo 5/metabolismo , Disfunção Erétil/metabolismo , Óxido Nítrico Sintase/metabolismo , Nucleotídeos Cíclicos/metabolismo , Animais , Biologia Computacional/métodos , Bases de Dados Genéticas , Complicações do Diabetes/epidemiologia , Disfunção Erétil/epidemiologia , Disfunção Erétil/fisiopatologia , Regulação da Expressão Gênica/genética , Ontologia Genética/estatística & dados numéricos , Redes Reguladoras de Genes/genética , Humanos , Masculino , Modelos Animais , Mapas de Interação de Proteínas/genética , Ratos
6.
Urol Clin North Am ; 48(4): 513-525, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34602172

RESUMO

The science of penile erection, including recent advances in its molecular physiology and neuroanatomic pathways, is described. The pathophysiology of erectile dysfunction is presented, acknowledging associated disease states, and accordingly follows a practical classification scheme: vasculogenic, neurogenic, endocrine, and psychogenic.


Assuntos
Disfunção Erétil/fisiopatologia , Ereção Peniana/fisiologia , Disfunção Erétil/etiologia , Humanos , Masculino
7.
Mech Ageing Dev ; 200: 111590, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34699858

RESUMO

The role of STIM/Orai calcium entry system on vascular ageing has not been elucidated. We aimed to evaluate the influence of ageing on STIM/Orai signalling and its role on ageing-induced alterations of contractile function in rat corpus cavernosum (RCC) and human penile resistance arteries (HPRA) and corpus cavernosum (HCC). RCC was obtained from 3 months-old and 20 months-old animals. HPRA and HCC were obtained from organ donors of varied ages without history of erectile dysfunction. Aging was associated with enhanced norepinephrine (NE)- and thromboxane analogue (U46619)-induced contractions in RCC which were significantly inhibited by the STIM/Orai inhibitor, YM-58483 (20 µM). Other STIM/Orai inhibitor, 2-aminoethyldiphenylborate also reduced NE-induced contractions in RCC from aged rats. YM-58483 significantly reduced neurogenic contractions and potentiated neurogenic relaxations in RCC from aged rats. In HCC and HPRA, NE-induced contractions were significantly enhanced in older subjects (>65 years-old) but YM-58483 completely reversed ageing-related hypercontractility. Ageing did not modify STIM-1 and Orai1 protein expressions but Orai3 was significantly overexpressed in cavernosal tissue from old rats and older subjects. Contribution of STIM/Orai to cavernosal contraction increases with ageing together with increased expression of Orai3. Orai inhibition could be a potential therapeutic strategy to reduce ageing-related impact on vascular/erectile function.


Assuntos
Artérias , Bloqueadores dos Canais de Cálcio/farmacologia , Canais de Cálcio/metabolismo , Sinalização do Cálcio , Ereção Peniana , Pênis , Molécula 1 de Interação Estromal/metabolismo , Idoso , Animais , Artérias/efeitos dos fármacos , Artérias/metabolismo , Artérias/fisiopatologia , Sinalização do Cálcio/efeitos dos fármacos , Sinalização do Cálcio/fisiologia , Disfunção Erétil/tratamento farmacológico , Disfunção Erétil/metabolismo , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Contração Muscular/efeitos dos fármacos , Contração Muscular/fisiologia , Ereção Peniana/efeitos dos fármacos , Ereção Peniana/fisiologia , Pênis/irrigação sanguínea , Pênis/efeitos dos fármacos , Pênis/metabolismo , Pênis/fisiopatologia , Ratos , Vasoconstritores/farmacologia , Vasodilatadores/farmacologia
8.
Sci Rep ; 11(1): 18389, 2021 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-34526524

RESUMO

To investigate the association between pelvic floor muscle strength and erectile function in a prospectively collected observational cohort. 270 male volunteers were prospectively collected and grouped by International Index of Erectile Function-5 (IIEF-5) scores. Pelvic floor muscle strength was compared. Patients with obvious neurologic deficits, abnormal pelvic bones, history of pelvic radiation therapy, prostatectomy, or urinary incontinence were excluded. We analyzed 247 patients with mean (± standard deviation, SD) age of 62.8 (± 10.1) years. Mean (± SD) maximal and average strength were 2.0 (± 1.5) and 1.1 (± 0.8) kgf, respectively. Mean (± SD) endurance and IIEF-5 scores were 7.2 (± 2.6) seconds and 13.3 (± 7.9), respectively. Patients with IIEF-5 scores ≤ 12 tended to be older, with a higher occurrence of hypertension and lower body mass index. Age [odds ratio (OR) 1.08, 95% confidence interval (CI) 1.04-1.12, p < 0.001], and maximal strength < 1.9 kgf (OR 2.62, 95% CI 1.38-4.97, p = 0.003) were independent predictors for IIEF-5 scores ≤ 12 in multivariate regression analysis. Patients with erectile dysfunction were older and showed lower pelvic floor muscle maximal strength. Future prospective trials needed for using physiotherapy are required to verify our results.


Assuntos
Força Muscular , Diafragma da Pelve/fisiologia , Ereção Peniana , Adulto , Idoso , Índice de Massa Corporal , Disfunção Erétil/diagnóstico , Disfunção Erétil/etiologia , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Dinamômetro de Força Muscular , Estudos Prospectivos
9.
Urol Int ; 105(11-12): 969-985, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34521090

RESUMO

PURPOSE: The purpose of the study was to evaluate the association between alcohol consumption and risk of erectile dysfunction (ED). METHODS: PubMed was searched for reports published before June 2019. Data were extracted and combined odds ratios (ORs) calculated with random-effects models. RESULTS: Finally, 46 studies were included (216,461 participants). The results of our meta-analysis indicated that there was a significant association between regular alcohol consumption and ED (OR 0.89, 95% confidence interval [CI]: 0.81-0.97). There was no indication of publication bias (Egger's test, p = 0.37). In the stratified analysis, the pooled OR of ED for light to moderate and high alcohol consumption was 0.82 (95% CI: 0.72-0.94) and 0.82 (95% CI: 0.67-1.00), respectively. No variable related to the source of heterogeneity was found in univariate and multivariate meta-regression analyses. A dose-response meta-analysis suggested that a nonlinear relationship between alcohol consumption and risk of ED was observed (p for nonlinearity <0.001). CONCLUSION: A J-shaped relationship between alcohol consumption and risk of ED was observed. Alcohol should be taken in moderate quantities in order to obtain the dual effect of disinhibition and relaxation. If taken chronically, it could provoke vascular damages.


Assuntos
Consumo de Bebidas Alcoólicas/efeitos adversos , Disfunção Erétil/epidemiologia , Ereção Peniana , Adulto , Idoso , Consumo de Bebidas Alcoólicas/epidemiologia , Disfunção Erétil/diagnóstico , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Medição de Risco , Fatores de Risco , Adulto Jovem
10.
J Urol ; 206(5): 1114-1121, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34495686

RESUMO

PURPOSE: Priapism is a persistent penile erection that continues hours beyond, or is unrelated to, sexual stimulation and results in a prolonged and uncontrolled erection. Given its time-dependent and progressive nature, priapism is a situation that both urologists and emergency medicine practitioners must be familiar with and comfortable managing. Acute ischemic priapism, characterized by little or no cavernous blood flow and abnormal cavernous blood gases (ie, hypoxic, hypercarbic, acidotic) represents a medical emergency and may lead to cavernosal fibrosis and subsequent erectile dysfunction. MATERIALS AND METHODS: A comprehensive search of the literature was performed by Emergency Care Research Institute for articles published between January 1, 1960 and May 1, 2020. Searches identified 2948 potentially relevant articles, and 2516 of these were excluded at the title or abstract level for not meeting inclusion criteria for any key question. Full texts for the remaining 432 articles were reviewed, and ultimately 137 unique articles were included in the report. RESULTS: This Guideline was developed to inform clinicians on the proper diagnosis and surgical and non-surgical treatment of patients with acute ischemic priapism. This Guideline addresses the role of imaging, adjunctive laboratory testing, early involvement of urologists when presenting to the emergency room, discussion of conservative therapies, enhanced data for patient counseling on risks of erectile dysfunction and surgical complications, specific recommendations on intracavernosal phenylephrine with or without irrigation, the inclusion of novel surgical techniques (eg, tunneling), and early penile prosthesis placement. CONCLUSIONS: All patients with priapism should be evaluated emergently to identify the sub-type of priapism (acute ischemic versus non-ischemic) and those with an acute ischemic event should be provided early intervention. Treatment of the acute ischemic patient must be based on patient objectives, available resources, and clinician experience. As such, a single pathway for managing the condition is oversimplified and no longer appropriate. Using a diversified approach, some men may be treated with intracavernosal injections of phenylephrine alone, others with aspiration/irrigation or distal shunting, and some may undergo non-emergent placement of a penile prosthesis.


Assuntos
Tratamento de Emergência/normas , Disfunção Erétil/prevenção & controle , Isquemia/terapia , Priapismo/terapia , Urologia/normas , Doença Aguda/terapia , Adulto , Terapia Combinada/métodos , Terapia Combinada/normas , Tratamento de Emergência/métodos , Disfunção Erétil/etiologia , Disfunção Erétil/fisiopatologia , Humanos , Isquemia/etiologia , Isquemia/fisiopatologia , Masculino , América do Norte , Ereção Peniana/fisiologia , Pênis/diagnóstico por imagem , Pênis/efeitos dos fármacos , Pênis/fisiopatologia , Pênis/cirurgia , Fenilefrina/administração & dosagem , Priapismo/diagnóstico , Priapismo/etiologia , Priapismo/fisiopatologia , Sociedades Médicas/normas , Fatores de Tempo , Ultrassonografia Doppler , Urologia/métodos
11.
Urology ; 158: 102-109, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34536411

RESUMO

OBJECTIVE: To clarify the effects of cellular self-aggregation of adipose-derived stem cells (ADSCs) on erectile function (EF). METHODS: A model of neurogenic erectile dysfunction was performed using bilateral cavernous nerve crush injury in rats. ADSCs suspensions (1 × 106/0.2 ml), were administered via intracavernous injection (ICI) after being allowed to shelve for 0 minute (ICI 0) or 60 minutes (ICI 60) in vitro, as well as cell aggregates isolated from ICI 60 (ICI A). The caudal vein injection group (CVI 60) was used to evaluate whether cell self-aggregation was beneficial to EF when introduced into the peripheral circulation. One day after the transplantation, the distribution of cells was observed. EF and histopathological changes were evaluated after 4 weeks. RESULTS: Approximately 85% of ADSCs self-aggregated into cell clusters at 60 minutes. The ICI 60 had more significant improvements in EF and more visualized ADSCs retained in the corpus cavernosum (CC) than ICI 0 and CVI 60 (P <.05), but no significant difference between ICI 60 and ICI A. In the CVI 60 group, the cell clusters formed by self-aggregation could hardly reach the CC and were mostly found in lung tissue. Immunofluorescence staining showed increased the content of expressing biomarkers of smooth muscle, nerve within the CC tissue in the ICI groups when compared to the CVI group. CONCLUSION: ADSCs self-aggregation before ICI may be an influential factor in the treatment of neurogenic erectile dysfunction. Its potential mechanism may be through improving cell retention in the CC.


Assuntos
Agregação Celular , Disfunção Erétil/terapia , Transplante de Células-Tronco Mesenquimais/métodos , Células-Tronco Mesenquimais/fisiologia , Tecido Adiposo/citologia , Animais , Modelos Animais de Doenças , Disfunção Erétil/etiologia , Disfunção Erétil/fisiopatologia , Injeções Intravenosas , Masculino , Músculo Liso/patologia , Óxido Nítrico Sintase Tipo I/metabolismo , Ereção Peniana , Pênis/inervação , Pênis/patologia , Traumatismos dos Nervos Periféricos/complicações , Nervos Periféricos/enzimologia , Ratos
12.
Urol Int ; 105(11-12): 935-943, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34384079

RESUMO

BACKGROUND AND OBJECTIVES: Stem cell therapy is a novel treatment with regenerative ability that can treat erectile dysfunction (ED). This phase 1/2 clinical trial (NCT02945449) using 2 consecutive intracavernous (IC) injections of allogeneic Wharton's jelly-derived mesenchymal stem cells (WJ-MSCs) was studied for the first time in the treatment of diabetic patients with ED. The primary outcome was to assess the safety and tolerability, and the secondary outcome was to assess the efficacy of 2 consecutive IC injections of allogeneic WJ-MSCs in diabetic ED. PATIENTS AND METHODS: Twenty-two diabetic patients with refractory ED were included. Two consecutive IC injections of allogeneic WJ-MSCs were performed. Tolerability was assessed immediately, and at 24 h, safety was evaluated for 12 months. Efficacy was assessed using International Index of Erectile Function-5 (IIEF-5), Erection Hardness Score (EHS), and Color Duplex Doppler Ultrasound for 12 months. RESULTS: The procedure was well-tolerated. Minimal and transient adverse events were redness and bruising at the site of injections. There were no patient-reported serious adverse effects. There were significant improvements in IIEF-5, EHS, peak systolic velocity (PSV) basal, and 20-min PSV, all over the follow-up time points in comparison to the baseline. CONCLUSION: This is the first human study with proven tolerability, safety, and efficacy of IC injections of allogeneic WJ-MSCs for the treatment of diabetic patients with ED.


Assuntos
Complicações do Diabetes/cirurgia , Disfunção Erétil/cirurgia , Transplante de Células-Tronco Mesenquimais , Ereção Peniana , Geleia de Wharton/citologia , Adulto , Idoso , Células Cultivadas , Complicações do Diabetes/diagnóstico , Complicações do Diabetes/fisiopatologia , Disfunção Erétil/diagnóstico , Disfunção Erétil/fisiopatologia , Humanos , Jordânia , Masculino , Transplante de Células-Tronco Mesenquimais/efeitos adversos , Pessoa de Meia-Idade , Estudos Prospectivos , Recuperação de Função Fisiológica , Fatores de Tempo , Transplante Homólogo , Resultado do Tratamento
13.
BMC Endocr Disord ; 21(1): 139, 2021 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-34210295

RESUMO

BACKGROUND: Erectile dysfunction is an inability to initiate and have a persistent erection firm enough to have satisfying sexual intercourse. The prevalence of erectile dysfunction in diabetic men is considerably high, but it is often underdiagnosed and under-managed. OBJECTIVE: This study aimed to determine erectile dysfunction and associated factors among diabetic patients at, Hawassa, Southern, Ethiopia. METHODS: The institution-based cross-sectional study was conducted on 352 adult male diabetic patients randomly selected from Adare general and Hawassa comprehensive specialized hospitals using a simple random sampling technique. The number of patients to be selected from each hospital was proportionally assigned based on the total population of diabetes mellitus patients following chronic care during the study period. The descriptive statistics and multiple logistic regressions (bivariate and multivariate analysis) were carried out. RESULT: The prevalence of erectile dysfunction was 72.2% (95%CI, 1.76-3.68). After adjusting all factors, old age, diabetes duration, drinking alcohol, and poor glycemic control had shown significant association with erectile dysfunction. CONCLUSION: The occurrence of erectile dysfunction in this study community is very high. Drinking alcohol, poor glycemic control, age, and duration of diabetes were predictors of erectile dysfunction in this study area. Assessment and management of erectile dysfunction in the diabetic clinic should be part of routine medical care during follow-up visits with diabetic patients. Healthcare providers should emphasize screening and treating older patients and those who have had a diabetes diagnosis for a longer duration.


Assuntos
Complicações do Diabetes , Disfunção Erétil/etiologia , Disfunção Erétil/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Complicações do Diabetes/diagnóstico , Complicações do Diabetes/epidemiologia , Disfunção Erétil/epidemiologia , Etiópia/epidemiologia , Humanos , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Inquéritos e Questionários , Adulto Jovem
14.
Urology ; 157: 161-167, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34298032

RESUMO

OBJECTIVE: To report sexual health outcomes in male patients undergoing open radical cystoprostatectomy using a validated questionnaire. MATERIALS AND METHODS: Beginning in 2017, male patients were asked to complete a validated questionnaire during scheduled post-cystectomy clinic visits that assessed sexual function using the 5 item International Index of Erectile Function (IIEF-5) and supplemental questions which evaluated libido, orgasm, partner interest, and adequacy of pre-operative counselling. Baseline data and functional outcomes were compared and multivariable analysis performed. RESULTS: A total of 134 patients who met inclusion criteria completed the questionnaire. Pre-operative IIEF-5 was available in 78 patients with a median score of 16 (IQR:5-23). In those patients, median age at cystectomy was 68.9 years (IQR:60.2-72.4) and median duration of follow-up was 17.3 months (IQR:6.3-28.7). Median IIEF-5 score at time of survey completion was 1 (IQR:1-11). Increasing age, shorter follow-up duration, insufficient counselling, and absence of partner interest were predictive of lower scores. Younger age, pre-operative erectile function, and neurovascular preservation were predictive of a higher IIEF-5 score on univariate and multivariate analysis. Median libido score was 2 "low" (IQR:1-3) and ability to orgasm was reported by 34 (43.6%) patients. Neurovascular preservation (OR:3.03 95% CI:1.10-8.26, P = .03) and sufficient preoperative counselling (OR:3.078 95% CI:1.17-8.098, P = .02) were associated with preserved ability to orgasm. Libido was influenced by partner interest (OR 11.7, 95% CI:3.793-6.14, P <.0001). CONCLUSION: Sexual dysfunction after radical cystoprostatectomy is prevalent with many contributing factors. As such, establishing appropriate expectations and goals during preoperative counseling, performing neurovascular preservation when appropriate, and readily identifying and treating dysfunction in follow-up may improve sexual recovery.


Assuntos
Cistectomia/psicologia , Disfunção Erétil/fisiopatologia , Prostatectomia/psicologia , Comportamento Sexual , Neoplasias da Bexiga Urinária/cirurgia , Fatores Etários , Idoso , Vasos Sanguíneos , Cistectomia/efeitos adversos , Disfunção Erétil/etiologia , Disfunção Erétil/psicologia , Humanos , Libido , Masculino , Pessoa de Meia-Idade , Tratamentos com Preservação do Órgão , Orgasmo , Medidas de Resultados Relatados pelo Paciente , Ereção Peniana , Nervos Periféricos/cirurgia , Período Pós-Operatório , Período Pré-Operatório , Prostatectomia/efeitos adversos , Índice de Gravidade de Doença , Aconselhamento Sexual , Parceiros Sexuais/psicologia , Derivação Urinária/efeitos adversos
15.
Biomed Pharmacother ; 138: 111486, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34311523

RESUMO

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)-ß1-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-ß-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.


Assuntos
Fator de Crescimento do Tecido Conjuntivo/metabolismo , Diabetes Mellitus Experimental/tratamento farmacológico , Disfunção Erétil/prevenção & controle , Morfolinas/farmacologia , Compostos Organotiofosforados/farmacologia , Ereção Peniana/efeitos dos fármacos , Pênis/efeitos dos fármacos , Proteínas Smad/metabolismo , Fator de Crescimento Transformador beta1/metabolismo , Animais , Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/metabolismo , Disfunção Erétil/etiologia , Disfunção Erétil/metabolismo , Disfunção Erétil/fisiopatologia , Fibrose , Sulfeto de Hidrogênio/metabolismo , Masculino , Pênis/metabolismo , Pênis/patologia , Pênis/fisiopatologia , Ratos Sprague-Dawley , Transdução de Sinais , Estreptozocina
16.
J Cardiovasc Pharmacol ; 78(3): 372-376, 2021 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-34074904

RESUMO

ABSTRACT: Erectile dysfunction is a common entity in clinical practice. Primary erectile dysfunction, not related to vasculopathy or psychiatric disorder, can be readily treated with phosphodiesterase inhibitors. These drugs have many physiologic effects that can alter a patient's hemodynamic profile considerably, especially in the presence of concomitant structural heart disease, specifically valvular heart disease. Although some contraindications to the use of PDE5 inhibitors in patients with cardiovascular disease are defined, the effect of these drugs in the presence of valvular heart disease is not well documented. The purpose of this review is to analyze the data regarding the safety of PDE5 inhibitors in patients with valvular heart disease.


Assuntos
Nucleotídeo Cíclico Fosfodiesterase do Tipo 5/metabolismo , Disfunção Erétil/tratamento farmacológico , Doenças das Valvas Cardíacas/fisiopatologia , Hemodinâmica/efeitos dos fármacos , Ereção Peniana/efeitos dos fármacos , Inibidores da Fosfodiesterase 5/uso terapêutico , Animais , Comorbidade , Disfunção Erétil/enzimologia , Disfunção Erétil/epidemiologia , Disfunção Erétil/fisiopatologia , Doenças das Valvas Cardíacas/enzimologia , Doenças das Valvas Cardíacas/epidemiologia , Humanos , Masculino , Segurança do Paciente , Inibidores da Fosfodiesterase 5/efeitos adversos , Medição de Risco , Fatores de Risco
17.
Medicine (Baltimore) ; 100(24): e26326, 2021 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-34128874

RESUMO

BACKGROUND: Erectile dysfunction (ED) and osteoporosis are both common health problems and have similar risk factors. Recent studies have found that people with ED have a higher risk of osteoporosis.We aimed to systematically assess osteoporosis risk in patients with ED. METHODS: A systematically research was carried out in Medline via PubMed, Cochrane Library, EMBASE, and Web of Science up to June 4, 2020, to identify articles related to ED and osteoporosis. The 2 researchers independently reviewed the literature, extracted the data, and evaluated the quality of the literature. All analyses were done using RevMan5.3 and Stata14. RESULTS: A total of 4 studies involving 22,312 participants were included. The meta-analysis results showed that the risk of osteoporosis in the ED group was significantly higher than that in the non-ED group [odds ratio (OR) = 2.66, 95% confidence interval (95% CI) 1.42 to 4.98, P = .002, I2 = 68%]. Interestingly, compared with older participants, the increased risk of osteoporosis in ED patients seemed to be more pronounced in younger participants. Despite the lack of data for meta-analysis, more than half of the literature mentioned this tendency. We found the source of heterogeneity through sensitivity analysis, and there was no significant effect on the results before and after the removal of this literature, indicating that our results were robust. No obvious publication bias was found through Egger method (P = .672). CONCLUSION: People with ED have a higher risk of osteoporosis, especially among younger males. Because the assessment of osteoporosis is economical and noninvasive, ED patients should be evaluated by bone mineral density or men with osteoporosis should be further assessed for erectile function.


Assuntos
Disfunção Erétil/complicações , Osteoporose/etiologia , Adulto , Idoso , Densidade Óssea , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Medição de Risco , Fatores de Risco
18.
J Urol ; 206(4): 942-951, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34033495

RESUMO

PURPOSE: Prediction of potency recovery following robot-assisted radical prostatectomy (RARP) is useful for better patient counseling and postoperative treatment strategies. In this study we propose a preoperative and postoperative nomogram to predict postoperative potency recovery following RARP. MATERIALS AND METHODS: Patients from development set (6,502) were selected to develop the nomograms, and patients in validation set (2,706) were used for validation. Cox regression models were fitted on the development cohort to predict potency recovery after RARP using as prognostic factors the covariates selected. Two nomograms were drawn using the regression coefficients of the preoperative and postoperative Cox models. RESULTS: The discrimination ability of the preoperative model was evaluated on the development cohort using the receiver operator curves estimated at 3, 6, 12 and 24 months. The AUC at these time points was 0.726, 0.734, 0.754, and 0.778, respectively. The areas under the curve of the postoperative model at 3, 6, 12 and 24 months were 0.746, 0.756 and 0.777, and 0.801, respectively. Preoperative and postoperative predictive models were validated using a separate set of 2,706 patients. The AUCs of the preoperative model at 3, 6, 12 and 24 months were 0.789, 0.772, 0.768, and 0.778, respectively. The ROC curves of the postoperative model at 3, 6, 12 and 24 months with AUCs of 0.807, 0.797, 0.793 and 0.798, respectively. Along with age and preoperative sexual function, nerve-sparing technique determines the potency outcomes justifying better AUC for postoperative model vs the preoperative model. CONCLUSIONS: The above nomograms help us to predict with good accuracy the probability of potency recovery within 3, 6, 12 and 24 months following surgery taking into consideration preoperative and postoperative factors. This is a novel tool for the care giver to predict realistic expectation of potency outcomes to the patients, while preoperative and immediate postoperative counseling.


Assuntos
Disfunção Erétil/cirurgia , Nomogramas , Prostatectomia/métodos , Neoplasias da Próstata/cirurgia , Recuperação de Função Fisiológica , Idoso , Disfunção Erétil/etiologia , Disfunção Erétil/fisiopatologia , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Ereção Peniana/fisiologia , Período Pós-Operatório , Valor Preditivo dos Testes , Período Pré-Operatório , Estudos Prospectivos , Próstata/patologia , Próstata/cirurgia , Neoplasias da Próstata/complicações , Curva ROC , Procedimentos Cirúrgicos Robóticos , Fatores de Tempo , Resultado do Tratamento
19.
Urol Int ; 105(11-12): 986-992, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33951654

RESUMO

PURPOSE: To identify risk factors and potential predictors of erectile dysfunction (ED) in type-2 diabetes mellitus (T2DM) patients for early detection and treatment. METHODS: A retrospective cohort was used to assess the clinical data of 105 diabetic patients with ED from May 2019 to April 2020 age-matched to 105 diabetic patients without ED. Potential risk factors that could contribute to ED were compared between the groups. Erectile function was evaluated using the International Index of Erectile Function-5 questionnaire. RESULTS: There were higher rates of diabetic peripheral neuropathy (p = 0.036) and retinopathy (p < 0.001), longer duration of diabetes (p < 0.001), lower estimated glomerular filtration rate (p = 0.010) values, and higher uric acid (p < 0.001) and C-reactive protein (p = 0.001) levels in the ED group compared to the non-ED group. Multivariate logistic analysis identified uric acid, diabetic retinopathy, and T2DM course as independent predictors of diabetic ED. Diabetics with retinopathy and T2DM for ≥49 months were 3.028 and 3.860 times more likely to have ED, respectively. Uric acid values ≥392.5 µmol/L were associated with 18.638 times greater risk of having ED, though the values were within normal range. CONCLUSION: In T2DM patients, higher uric acid (≥392.5 µmol/L), longer diabetes duration (≥49 months), and the presence of diabetic retinopathy were important and reliable predictors for diabetic ED. For patients who have high risk factors for developing ED, diligent screening and early treatment are necessary.


Assuntos
Diabetes Mellitus Tipo 2/epidemiologia , Disfunção Erétil/epidemiologia , Ereção Peniana , Adulto , China/epidemiologia , Diabetes Mellitus Tipo 2/diagnóstico , Retinopatia Diabética/epidemiologia , Diagnóstico Precoce , Disfunção Erétil/diagnóstico , Disfunção Erétil/fisiopatologia , Disfunção Erétil/terapia , Humanos , Hiperuricemia/epidemiologia , Incidência , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo , Adulto Jovem
20.
World J Urol ; 39(10): 3755-3761, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34021406

RESUMO

PURPOSE: A substantial proportion of men with localized prostate cancer (lPCa) later regret their treatment decision. We aimed to identify factors contributing to decisional regret. METHODS: We conducted a longitudinal study, in which men with lPCa were surveyed at four measurement points: T0 (baseline) = prior to treatment; T1 = 6; T2 = 12; T3 = 18 months after baseline. χ2-tests and independent t-tests were used to compare men undergoing different treatments [Active Surveillance (AS) vs. local treatment]. Logistic regression models were fitted to investigate the associations between predictors (time pressure, information provided by the urologist, impairment of erectile functioning, satisfaction with sexual life) and the criterion decisional regret. RESULTS: At baseline, the sample included N = 176 men (AS: n = 100; local treatment: n = 76). At T2 and T3, men after local therapies reported higher regret than men under AS. Decisional regret at T3 was predicted by time pressure at baseline (OR 2.28; CI 1.04-4.99; p < 0.05), erectile dysfunction at T2 and T3 (OR 3.40; CI 1.56-7.42; p < 0.01), and satisfaction with sexual life at T1-T3 (OR 0.44; CI 0.20-0.96; p < 0.05). CONCLUSIONS: Time pressure, erectile dysfunction, and satisfaction with sexual life predict decisional regret in men with lPCa. Mitigating time pressure and realistic expectations concerning treatment side effects may help to prevent decisional regret in PCa survivors. TRIAL REGISTRATION NUMBER: DRKS00009510; date of registration: 2015/10/28.


Assuntos
Carcinoma/terapia , Tomada de Decisões , Emoções , Satisfação do Paciente , Neoplasias da Próstata/terapia , Conduta Expectante , Idoso , Disfunção Erétil/fisiopatologia , Humanos , Modelos Logísticos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Saúde Sexual , Fatores de Tempo , Urologistas
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