Abstract：
:Penile erection is a vascular phenomenon that results from smooth muscle relaxation, arterial dilation and venous restriction. The atherosclerosis of the penis that occurs with aging causes a decrease in penile oxygen tension. A reduction of smooth muscle cells has been demonstrated in relation with this change in oxygen tension. Changes in the ratio of penile collagen have also been observed and could explain the decrease in penile elasticity and compliance. Chronic ischemia is, therefore, associated with fibrosis but also with nitric oxide (NO)-cyclic guanosine monophosphate. The sensitivity of the alpha-adrenoceptors on the smooth muscle cells increases with aging. All those modifications can explain the prevalence of erectile dysfunction with aging. Low oxygen tension in prostanoid production may also play a role in the mechanism of ischemia-induced cavernosal fibrosis; however, intracavernous injections of prostaglandin E(1) do not seem to modify the intracavernous structures by reducing muscular atrophy. The effects of androgen on libido and sexual behavior are well established, but their role in the human erectile mechanism remains unclear. Several studies performed on animals have demonstrated impacts directly on both the physiological function and the trabecular structure of the corpora cavernosa in rats, dogs and rabbits. However, in humans, no study seems to demonstrate a role of testosterone on muscular atrophy or penile neurologic control. Testosterone treatment alters the human behavior but not penile physiologic processes. Further studies are necessary to explain the real role of testosterone not only on the peripheral mechanism of erection but also on the central control.
journal_name
Int J Impot Resjournal_title
International journal of impotence researchauthors
Wespes Edoi
10.1038/sj.ijir.3900792subject
Has Abstractpub_date
2002-02-01 00:00:00pages
S17-21eissn
0955-9930issn
1476-5489journal_volume
14 Suppl 1pub_type
杂志文章,评审abstract：OBJECTIVES:Our objective was to elucidate the discussion points of circumcision on social media (SoMe) by looking at the Twitter activity. MATERIAL AND METHODS:Twitter searched for #circumcision hashtag via www.tweetarchivist.com , www.twitonomy.com , www.symplur.com . Total tweet numbers, most influencers, top users ...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-018-0058-y
更新日期：2018-10-01 00:00:00
abstract：:One of the most commonly used tests to distinguish psychogenic from organic erectile dysfunction (ED) is to monitor nocturnal penile tumescence using the RigiScan device and its new software called RigiScan Plus. To give a true estimate of the predictive ability of the new RigiScan software parameters, tumescence acti...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/ijir.2009.49
更新日期：2009-11-01 00:00:00
abstract：:Erectile dysfunction is a common condition that affects men over age 40. It is highly related to obesity. The corpus cavernosum is the most important structure involved in erection. The aim of this study was to evaluate the structure of the corpus cavernosum of mice fed with a high energy density diet (HED). At 3 mont...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-018-0089-4
更新日期：2019-03-01 00:00:00
abstract：:This cohort study aimed to assess the effect of the mode of delivery on female sexual function (FSF) after childbirth. Out of 256 primiparous women, 200 subjects that completed the study were divided into two groups; women that delivered vaginally and women that had elective cesarean section (CS). They were subjected ...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/ijir.2015.2
更新日期：2015-05-01 00:00:00
abstract：:The sexuality and the management of benign prostatic hyperplasia (BPH) with alfuzosin (SAMBA) trial evaluated the effect of alfuzosin on sexual function in men treated for BPH using two sexual function scales: male sexual health questionnaire (MSHQ) and international index of erectile function (IIEF-15). A total of 14...
journal_title：International journal of impotence research
pub_type： 临床试验,杂志文章
doi：10.1038/ijir.2008.62
更新日期：2009-01-01 00:00:00
abstract：:In a prospective, placebo-controlled, one group crossover design study, we tested whether adding programmed intracavernous PGE1 injections (IC-PGE1) can improve the effectiveness of sildenafil in erectile dysfunction (ED) patients unresponsive to monotherapy with this drug. In all, 40 ED patients who had experienced u...
journal_title：International journal of impotence research
pub_type： 临床试验,杂志文章
doi：10.1038/sj.ijir.3901290
更新日期：2005-07-01 00:00:00
abstract：:Several analyses have demonstrated a clinically useful relationship between serum prostate specific antigen (PSA) and prostate volume in men with benign prostatic hyperplasia (BPH) and lower urinary tract symptoms (LUTS). Both prostate volume and serum PSA predict certain aspects of the natural history of LUTS and BPH...
journal_title：International journal of impotence research
pub_type： 杂志文章,评审
doi：10.1038/ijir.2008.53
更新日期：2008-12-01 00:00:00
abstract：:The role of steroid hormones in regulating vaginal smooth muscle contractility was investigated. Rabbits were kept intact or ovariectomized. After 2 weeks, animals were continuously infused with vehicle or supraphysiological levels of testosterone (100 microg/day), or estradiol (200 microg/day), for an additional 2 we...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3901138
更新日期：2004-02-01 00:00:00
abstract：:End-stage renal disease (ESRD) affects sexual function. The etiology of sexual dysfunction in ESRD is multifactorial and hypogonadism is not uncommon. In a cohort of 96 men with ESRD, scores on International Index of Erectile Function (IIEF) correlated with bioavailable testosterone (T; P<0.01). We further evaluated t...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/ijir.2009.55
更新日期：2010-03-01 00:00:00
abstract：:Erectile dysfunction (ED) due to androgen deficiency is rare in the young population. We retrospectively evaluated in this study men aged 18-40 years presenting with ED from 2015 to 2017. The International Index of Erectile Function-5 (IIEF-5) and Erection Hardness Grade Scores (EHGS) were used to assess erectile func...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-018-0090-y
更新日期：2019-03-01 00:00:00
abstract：:The first goal of this study was to examine the effect of secondhand smoking on neurogenic, endothelium- and cGMP-dependent relaxant responses of rabbit corpus cavernosum smooth muscle. Our second goal was to determine whether such an effect can be prevented by oral administration of L-arginine. Male New Zealand rabbi...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3901341
更新日期：2005-09-01 00:00:00
abstract：:Although decline in sexual function is a common reason for ageing men to seek advice regarding testosterone therapy, placebo-controlled trial data have been unable to show a consistent, beneficial role for testosterone. The objective of this study was to determine the effect of testosterone therapy on sexual function ...
journal_title：International journal of impotence research
pub_type： 杂志文章,随机对照试验
doi：10.1038/ijir.2008.22
更新日期：2008-07-01 00:00:00
abstract：:The objective of this study was to investigate the predictive validity of the Dutch translation of the Golombok Rust Inventory of Sexual Satisfaction (GRISS) for the presence of clinically relevant sexual dysfunctions and patient's need of help. A total of 57 male urological outpatients (age 50.7+/-13.2 y; range 27-77...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3900966
更新日期：2003-04-01 00:00:00
abstract：:Although several studies on toxic effect of aspartame metabolite have been studied, controversial reports over the use of aspartame owing to the fact that it releases methanol as one of its metabolite during metabolism exist. This present study is proposed to investigate whether aspartame (40 mg kg-1 b.wt) administrat...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/ijir.2017.17
更新日期：2017-07-01 00:00:00
abstract：:During penile pharmacotesting, anxiety may overcome complete smooth muscle relaxation and lead to false positive diagnosis of organic male erectile dysfunction (ED). We tested the efficacy and safety of re-dosing of PGE1 alone versus combination of PGE, and the alpha1,2-blocker phentolamine (PHE) to improve an incompl...
journal_title：International journal of impotence research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1038/sj.ijir.3900477
更新日期：2000-02-01 00:00:00
abstract：:In extracavernosal vascular tissue, smooth muscle tone is modulated by a balance between angiotensin II (Ang II) and nitric oxide (NO). We hypothesized that these substances also play an important role in regulating cavernosal smooth muscle contractility. We therefore studied the in vitro effects of an Ang II receptor...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3900261
更新日期：1997-09-01 00:00:00
abstract：:Chronic heart failure (HF) is an increasingly common cardiovascular disorder. The goal of health-care providers is to optimize quality of life in this population, including sexual health. Up to 75% of patients with HF report erectile dysfunction (ED). As HF is a condition with distinct physiologic sequelae, some uniqu...
journal_title：International journal of impotence research
pub_type： 杂志文章,评审
doi：10.1038/sj.ijir.3901426
更新日期：2005-12-01 00:00:00
abstract：:As lifelong premature ejaculation (PE) and subjective PE are two different PE subtypes, the measurement of their characteristic features requires different objective measures. In this article, we address the differences between lifelong PE and subjective PE, in terms of the extent of variation of sexual performance an...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-018-0107-6
更新日期：2019-09-01 00:00:00
abstract：:Sildenafil is one of two oral drugs approved for first-line treatment of erectile dysfunction (ED). Anecdotally, some young healthy men who wish to enhance their sexual performance are requesting or abusing sildenafil. In this randomized double-blind, placebo-controlled clinical study, we investigated the effect of si...
journal_title：International journal of impotence research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1038/sj.ijir.3901005
更新日期：2003-06-01 00:00:00
abstract：:Physicians dealing with sexual dysfunction (SD) must consider the psychological and behavioral aspects of their patient's diagnosis and management, as well as organic causes and risk factors. Integrating sex therapy and other psychological techniques into their office practice will improve effectiveness in treating SD...
journal_title：International journal of impotence research
pub_type： 杂志文章,评审
doi：10.1038/sj.ijir.3901075
更新日期：2003-10-01 00:00:00
abstract：:Apprehension about the normal size of penis is a major concern for men. Aim of the present investigation is to estimate the penile length and circumference of Indian males and to compare the results with the data from other countries. Results will help in counseling the patients worried about the penile size and seeki...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3901569
更新日期：2007-11-01 00:00:00
abstract：:The aim of this study is to review the current literature that reports outcomes of Peyronie's disease (PD) grafting surgery, with a special focus on novel approaches and grafting materials. For this purpose, a literature review was performed through PubMed between 2014 and 2019 regarding grafting techniques in PD reco...
journal_title：International journal of impotence research
pub_type： 杂志文章,评审
doi：10.1038/s41443-019-0179-y
更新日期：2020-01-01 00:00:00
abstract：:There is evidence that emotional intimacy can buffer the distress associated with sexual difficulties. Considering that older adults are at an increased risk of chronic illness, many of which (including their medical treatment) can impact their sexual well-being, the link between intimacy and sexual distress may be pa...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-019-0214-z
更新日期：2020-09-01 00:00:00
abstract：:The Hypogonadism In Males study estimated the prevalence of hypogonadism in men aged > or =45 years. A sub-analysis of patients not receiving testosterone (T) therapy was conducted. Blood draw times were 0800-1000 and 1000-1200 hours. Total T (TT) was not influenced by draw time for any age group; however, significant...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3901580
更新日期：2008-03-01 00:00:00
abstract：:A lack of uniformity exists for insurance payer coverage for all categories of penile prostheses (PP). We sought to determine common insurance coverage criteria and barriers to implantation across common insurance plans from healthcare referral regions (HRR) nationwide. Coverage criteria and stipulations were reviewed...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-019-0226-8
更新日期：2021-01-01 00:00:00
abstract：:At this present time there is a serious gap in our understanding of how psychological difficulties result in specific sexual dysfunction. In this paper, a theoretical model of sexual response is proposed which involves the parallel existence of excitatory and inhibitory mechanisms in the central nervous system. Eviden...
journal_title：International journal of impotence research
pub_type： 杂志文章,评审
doi：
更新日期：1998-05-01 00:00:00
abstract：:Penile implant malfunction is usually treated by removal of the original malfunctioning implant followed by replacement with a new device. During replacement, the original implant can be explanted without any difficulty, as it is not adherent to the surrounding tissue. Herein, we describe two cases of tissue ingrowth ...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3901217
更新日期：2004-04-01 00:00:00
abstract：:This research was carried out to evaluate the prevalence of carotid and/or lower limb artery abnormalities in patients with arterial erectile dysfunction (ED). To this end, patients with ED (Andrology Unit) or suspected peripheral atherosclerosis (Angiology Unit) underwent an independent and parallel echo-Duplex exami...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3901312
更新日期：2005-05-01 00:00:00
abstract：:The objective was to study available evidence for ingredients of popular over-the-counter testosterone and erectile dysfunction (ED) supplements. The top 16 male testosterone and 16 ED supplements in the USA were identified from the most popular online retailers: A1 Supplements, Amazon, Vitamin Shoppe, and Walmart. In...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/s41443-020-0285-x
更新日期：2020-05-01 00:00:00
abstract：:Despite extensive research into the toxicity of bisphenol A (BPA), no report of its effect on erectile function exists. We performed this study to investigate the effect of BPA on erectile function. New Zealand white rabbits were treated intraperitoneally with 150 mg/kg of BPA every other day for 12 days (cumulative d...
journal_title：International journal of impotence research
pub_type： 杂志文章
doi：10.1038/sj.ijir.3900734
更新日期：2001-10-01 00:00:00
