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Predicting responsiveness to the treatment of rapid ejaculation with 25 mg clomipramine as needed.

Clomipramine (25 mg) taken as needed increases ejaculatory latency in men with rapid ejaculation (RE), although only about half the men treated respond to this regimen. It would therefore be clinically advantageous to know the patient's potential responsiveness to an 'as needed' regimen prior to treatment. The present study attempted to identify a priori factors that might enable prediction of patients' response or nonresponse to 'as needed' clomipramine. Variables relevant to rapid ejaculation were examined in 23 men with RE, 12 of whom had responded to clomipramine. Logistic regression indicated that three factors assessed prior to treatment--initial ejaculation latency, overall sexual satisfaction, and ejaculation frequency each week--significantly improved the prediction of responsiveness to this treatment regimen. Specifically, RE men with initial ejaculatory latencies over 60 s, self-reported sexual satisfaction of 5 or higher (on a seven-point scale), and ejaculation frequency of twice or more weekly were more likely to benefit from 25 mg 'as needed' clomipramine. As such, men meeting these criteria might be considered for this treatment regimen. Those not matching these characteristics might better be considered for 20 or 30 mg clomipramine given on a daily basis.

Adult↗

Relevance of methodological design for the interpretation of efficacy of drug treatment of premature ejaculation: a systematic review and meta-analysis.

The aim of this systematic review and meta-analysis is to evaluate whether the design and methodology of drug-treatment studies of premature ejaculation affect the efficacy outcome differently. Therefore, methodological, design and efficacy data from 79 studies (3034 males), published between 1943 and 2003, are reviewed. A meta-analysis is performed on 43 selective serotonin reuptake inhibitors (SSRIs) and clomipramine studies (1514 males), published between 1973 and 2003; these studies were pooled to provide a summary variance-weighted effect size. The antidepressant-induced percentage increase of the intravaginal ejaculation latency time (IELT) was calculated and examined against various methodological items. A significant difference in efficacy between SSRIs was observed. Using daily treatment, paroxetine appeared more effective than the other SSRIs. Retrospective use of a questionnaire, subjective reports, single-blind and open study designs generate far greater variability of ejaculation time both at baseline and during active drug treatment than real time assessment by stopwatch. In conclusion, at daily treatment, the overall efficacy of paroxetine, clomipramine, sertraline and fluoxetine is comparable, but paroxetine exerts the strongest ejaculation delay. Only eight (18.5%) studies on antidepressant treatment fulfilled all criteria used in evidence-based medicine, for example, randomised, double-blind studies with prospective real time (stopwatch) assessment of the IELT at each intercourse. Single-blind studies, open designs, retrospective reporting, or the use of a questionnaire to assess ejaculation time should be avoided.

Adult↗

Rapid ejaculation: a review of nosology, prevalence and treatment.

Information concerning the epidemiology, etiology and treatment of premature (rapid) ejaculation is reviewed. Evidence concerning the prevalence of premature ejaculation indicates that subjective concern about rapid ejaculation is a common concern worldwide. Hypotheses concerning the pathogenesis of premature ejaculation include: (1) that it is a learned pattern of ejaculation maintained by interpersonal anxiety, (2) that it is the result of dysfunction in central or peripheral mechanisms regulating ejaculatory thresholds and (3) that it is a normal variant in ejaculatory latency. Current evidence based treatment interventions include behavioral psychotherapy and the use of pharmacological agents, including topical anesthetic agents and selective serotonin reuptake inhibitors.

Animals↗

Assessment of suitable porcine semen for freezing, according to the ejaculate characteristics in the Iberico x Landrace breed.

A total of 35 ejaculates were studied in order to assess the suitability of porcine semen for freezing according to the ejaculate characteristics. The effects of the freezing procedure were identified; a decrease in motility and acrosome quality was found after thawing. The best results on motility were linked to the ejaculates with a volume of less than 100 ml of the sperm-rich fraction, a concentration lower than 450 x 10(6) spermatozoa/ml and an agglutination score below 2. However, the best normal apical ridge (NAR) was found when the volume of the sperm-rich fraction was greater than 150 ml. For this reason, an intermediate volume of the sperm-rich fraction of the ejaculate for the best motility and the best NAR, a concentration lower than 450 x 106 spermatozoa/ml and a rate of agglutination below 2 should provide the best quality after freezing. This study also attempted to determine whether a positive effect of ejaculate selection on the overall freezing performance might be expected.

Animals↗

Preservation of anterograde ejaculation after transurethral resection of both the prostate and bladder neck.

OBJECTIVE: To determine whether anterograde ejaculation is preserved after transurethral resection of both the prostate and bladder neck (TURP and TURBN). PATIENTS AND METHODS: Between 1994 and 1997, 45 patients (mean age 53.2 years, range 42-62) with bladder neck obstruction and small obstructive adenomas (< 35 g) underwent TURP/TURBN, preserving part of the supramontanal prostate and prostatic urethra for > 1 cm from the verumontanum. They were assessed before and after 0.5-2 years to determine the type of ejaculation, symptom scores and sexual function, and compared with 10 similar patients who had undergone a conventional TURP. RESULTS: With preservation of > 1 cm of the supramontanal prostate, anterograde ejaculation was maintained in 80% of the patients, whereas only one patient in the control group retained anterograde ejaculation. CONCLUSIONS: The preservation of anterograde ejaculation after TURP (in approximately 20% of cases) and after transurethral incision of the prostate (> 90% cases) reported in the literature probably relates more to the presence of an adequate amount of residual prostatic tissue than to the existence of a hypothetical 'pre-prostatic sphincter'.

Adult↗

Effects of a new functional-sexological treatment for premature ejaculation.

Premature ejaculation is the most-prevalent sexual problem in men. Various treatments have been developed to increase control over the moment of ejaculation, with two of the most frequent techniques used in behavior therapy being the squeeze method developed by Masters and Johnson (1970) and the "stop-and-start" technique described by Semans (1956). These treatments are effective and improve matters in most cases. However, couples can be averse to using them, with some women reluctant to squeeze their partner's penis and some couples unwilling to interrupt sexual interaction once initiated. Under a new functional-sexological treatment intended to improve control over the moment of ejaculation, men learn how to control their arousal without having to interrupt sexual activity. In this study, we compared three groups of couples in which the man suffered from premature ejaculation. One followed the new functional-sexological treatment, another followed a behavioral treatment--including the squeeze and stop-and-start techniques--and a control group was placed on a waiting list. We used several questionnaires to assess the effects of the various treatments. Moreover, subjects provided an objective measure of duration of intercourse from penetration to ejaculation. These measures were taken pre- and posttreatment and at three-month follow-up. We ran analyses of variance to assess the effects of the treatments. Results indicate that the new treatment is very effective. We observed significant improvements in duration of intercourse, sexual satisfaction, and sexual functioning. The subjects in the behavioral treatment group obtained similar results. Furthermore, subjects from both groups were satisfied with their respective treatment.

Adult↗

Clomipramine versus placebo in the treatment of premature ejaculation: a pilot study.

This study evaluated clomipramine as a possible treatment for premature ejaculation. Twenty patients with premature ejaculation were randomly allocated to treatment with clomipramine or placebo in a double-blind study. Average estimated time to ejaculation after vaginal penetration increased to 6.1 minutes on 25 mg. of clomipramine and to 8.4 minutes on 50 mg. of clomipramine. These estimated times were significantly different from estimated time to ejaculation while on placebo. These findings suggest that low dose clomipramine may be useful in the treatment of premature ejaculation.

Adult↗

Premature ejaculation: a psychophysiological review.

This review examines the most common male sexual dysfunction, premature ejaculation (PE). The prevalence, classification, neurophysiology, neuropharmacology, and psychological studies that offer evidence useful for understanding and clinically evaluating PE are reviewed. It is proposed that there are two basic kinds of PE: biogenic and psychogenic. Studies reporting pharmacological aspects of ejaculation offer some suggestions regarding the mechanisms of ejaculation as well as possible pharmacologic aid for some premature ejaculators. The traditional assumption among sex therapists that PE is almost universally caused by psychological features, and easily treated with sex therapy behavioral techniques, is drawn into question. Based on the limited available results from systematic investigations, behavioral treatments for PE remain beneficial to only a minority of men three years after treatment ends, suggesting that this male dysfunction is difficult to treat effectively. The mediocre results reported in treatment outcome studies may be due, in part, to reports on heterogeneous groups of premature ejaculators, for whom treatment has been generalized rather than targeted to the specific type of PE. We propose a biological and psychological etiology. With more discriminating assessment and more specific diagnosis of PE, and with treatment designed to address the particular type of PE, long-term outcome should improve for this common sexual dysfunction.

Antidepressive Agents↗

Serum leptin levels in patients with premature ejaculation.

Leptin is a fat cell-derived hormone signaling the hypothalamus about food intake, the regulation of weight, and sexual behavior. The inhibitory effect of serotonin on libido, ejaculation, and orgasm is well documented. There is an interaction between leptinergic and serotonergic systems in the central nervous system. This study was conducted to evaluate serum leptin levels of the patients with premature ejaculation. The study group consisted of 15 patients with premature ejaculation according to Diagnostic and Statistical Manual of Mental Disorders, Third Revised Version (DSM-III-R) and 15 healthy controls. The fasting serum leptin levels were measured. Significantly high serum leptin levels in the patients were found after body mass index or age adjustment. The intravaginal ejaculation latency time negatively correlated with leptin levels in both patient and control groups. In addition, there was a positive correlation between leptin levels and the duration of illness. It would appear that leptin may be associated with premature ejaculation.

Ejaculation↗

Antidepressants and ejaculation: a double-blind, randomized, placebo-controlled, fixed-dose study with paroxetine, sertraline, and nefazodone.

Antidepressant medication is often associated with sexual side effects. A double-blind, placebo-controlled study in men with lifelong rapid ejaculation was performed to assess the effects of two selective serotonin (5-HT) reuptake inhibitors--paroxetine and sertraline--and the 5-HT2 antagonist and 5-HT/noradrenaline reuptake inhibitor nefazodone on the latency to ejaculate. Forty-eight men with an intravaginal ejaculation latency time (IELT) of a maximum of 1 minute were randomly assigned to receive paroxetine (20 mg/day), sertraline (50 mg/day), nefazodone (400 mg/day), or placebo for 6 weeks. During the 1-month baseline and 6-week treatment period, IELTs were measured at home with a stopwatch. The trial was completed by 40 men. During the 6-week treatment period, the geometric mean IELT in the placebo group was stable at approximately 20 seconds. Analysis of variance revealed a between-group difference in the evolution of IELT delay over time (p = 0.002); the IELT after paroxetine and sertraline gradually increased to approximately 146 and 58 seconds, respectively, compared with 28 seconds in the nefazodone group. The paroxetine and sertraline groups differed significantly (p < 0.001 and p = 0.024, respectively) from placebo, but the nefazodone group did not (p = 0.85). Compared with baseline, paroxetine exerted the strongest delay in ejaculation, whereas sertraline delayed it only moderately. There was no clinically relevant delay in ejaculation with nefazodone.

Adolescent↗

Split ejaculate insemination with and without the addition of kallikrein.

48 couples with primary sterility and a therapy-resistant male factor (oligoasthenozoospermia, asthenozoospermia) were subjected to a split ejaculate insemination therapy with and without addition of kallikrein. In all men, in vitro stimulation of sperm motility by kallikrein was possible. 468 inseminations were performed in 341 ovulatory cycles according to the BBT and the cervical score. To the sperm-rich fraction of the split ejaculate physiological saline or physiological saline containing pancreatic kallikrein in a final concentration of 5 units/ml was added and inseminated alternatively over another cycle for a period of one year. The conception optimum was around the 7th insemination cycle. 11 conceptions were obtained after split insemination with kallikrein and 6 conceptions after split insemination without kallikrein. Conception rate was 35%, abortion rate 18%. The sex ratio showed 8 healthy girls to 4 healthy boys. Within the oligoasthenozoospermic group a conception rate of 28% was obtained, whereas the conception rate of the asthenozoospermic group was 43%. In the latter, more than the double number of conceptions were achieved with kallikrein addition. Kallikrein addition showed a beneficial effect particularly in ejaculates with less than 30% progressively motile spermatozoa. The investigation shows the usefulness of split ejaculate inseminations. Furthermore, addition of kallikrein to the ejaculate for the purpose of insemination may be beneficial particularly in patients with therapy-resistant asthenozoospermia.

Adult↗

A qualitative pilot study of islamic men with lifelong premature (rapid) ejaculation.

INTRODUCTION: Premature ejaculation is a common sexual problem in men. Although the etiology is unclear, there is emerging evidence that men from different ethnic backgrounds may be more at risk. AIM AND OBJECTIVE: The aim of this study was to generate themes and hypotheses around the etiology of premature ejaculation with particular reference to men from Islamic backgrounds. METHODS: This is an explorative qualitative study using semi-structured interviews with 10 male volunteers with a clinical diagnosis of premature ejaculation. Interviews were tape-recorded and transcribed. Transcriptions were then hand-coded and analyzed using grounded theory. RESULTS: Anxious first sexual experience (with subtheme: fear of being discovered and wanting to finish early); sex before marriage; sex outside of marriage; religion; "stress;" exposure to Western images; living in the United Kingdom; and the subsequent feeling of freedom were themes that emerged from the transcripts. CONCLUSIONS: We have identified factors associated with premature ejaculation in patients with Islamic backgrounds attending our unit. This may have useful therapeutic implications when consulting Islamic men with premature ejaculation.

Adult↗

Diagnosing premature ejaculation: a review.

INTRODUCTION: Premature ejaculation (PE) is one of the most prevalent male sexual dysfunctions, yet it is frequently misdiagnosed or overlooked as a result of numerous patient and physician barriers. In particular, there is no universally used definition of the condition. There are no validated assessments or laboratory assays which distinguish men with PE from men without PE, and there are no risk factors or definitive correlates identified for this condition. Patients fail to seek medical help because of the stigma and embarrassment over the condition. In addition, patients (and clinicians) often misdiagnose PE as erectile dysfunction (ED). AIM: To review the barriers to diagnosing PE, the factors to consider in diagnosing PE and how to diagnose PE. METHODS: The Sexual Medicine Society of North America hosted a State of the Art Conference on Premature Ejaculation on June 24-26, 2005 in collaboration with the University of South Florida. The purpose was to have an open exchange of contemporary research and clinical information on PE. There were 16 invited presenters and discussants; the group focused on several educational objectives. MAIN OUTCOME MEASURE: Data were utilized from the American Urological Association (AUA) Guideline on the Pharmacologic Management of Premature Ejaculation. RESULTS: The AUA recommends the diagnosis of PE be based solely upon sexual history. In addition to a shortened latency time, recent research has identified three key factors associated with--and necessary for--a diagnosis of PE: (i) patient reports of reduced control over ejaculation; (ii) patient (and/or partner) reports of reduced satisfaction with sexual intercourse; and (iii) patient (and/or partner) distress over the condition. CONCLUSIONS: The diagnosis of PE is based upon sexual history of a shortened latency time, poor control over ejaculation, low satisfaction with intercourse, and distress regarding the condition.

Adult↗

Breed differences in the response of young beef bulls to electro-ejaculation.

A total of 702 electro-ejaculation attempts are recorded on young (16 to 31 months) beef bulls of 3 breeds and 3 breed crosses (Brahman cross 100, Africander cross 93, Shorthorn cross 109, Brahman 81, Africander 89, and Hereford 230. Four hundred and forty of these attempts were conducted on bulls of the first 5 of these breeds which had been reared under similar conditions on the same property. The machine employed was a Watson Transtimulator, powered by a 12-volt automobile battery, and connected to a 6.25 cm diameter bipolar ring electrode probe, 37.5 cm in length. The voltages at which the sperm free (sample A) and sperm rich (sample B) samples were initiated were 4.8 +/- .2 and 7.7 +/- .2 volts respectively. No breed differences occurred. Breed differences occurred in the proportion of bulls showing a severe reaction to the electricity (P less than 0.001) with the Africander (32.6%; P less than 0.001) and Ax (28.0%; P less than 0.01) having the highest proportions of severe reactions. These 2 breed groups also had the highest proportions of electro-ejaculation failures (respectively, 23.6%; P less than 0.05 and 19.4%; n.s.). Overall, bulls of Bos indicus derivation did not differ from those of Bos taurus derivation in electro-ejaculation failures. During stimulation, erection was achieved by 19.8% of bulls and failure to collect an assessable ejaculate occurred in 15%. No breed differences occurred in either category. Collapse during stimulation occurred in 5.3% of electro-ejaculation attempts (overall P less than 0.05) with the SH breed group having highest representation (12.8%; P less than 0.001).

Animals↗

Preservation of antegrade ejaculation in retroperitoneal lymphadenectomy due to residual masses after primary chemotherapy for testicular carcinoma.

We report 18 consecutive patients with testis cancer and retroperitoneal residual masses with normal tumor markers, who underwent lymphadenectomy. Aiming to preserve the antegrade ejaculation, we carried out surgical modifications which basically attempt to preserve: (1) both sympathetic lumbar trunks, (2) the superior hypogastric plexus and (3) some of the postganglionic branches. With a mean follow-up of 28.1 months (range 6-62 months), 15 (83.3%) of the 18 patients preserved ejaculation, without significant differences between ejaculation volumes before and after lymphadenectomy. At the present time, 3 of 4 possible patients have fathered children. Mass size seems to be an important predictive factor of ejaculation preservation. One patient relapsed in the retroperitoneal dissection area, representing a recurrence rate of 5.5%. The disease-free survival rate was 94.4%, and 1 patient died due to disease progression with lung recurrence. Thus preservation of ejaculation was possible in most of these patients.

Adult↗

Instability of nuclear chromatin in the ejaculated spermatozoa of fertile men.

In the present study of 15 fertile men, a mean of 89 +/- 3% of ejaculated cells had nuclei which were stable after treatment with 1% sodium dodecyl sulphate (SDS). Examination of repeated ejaculates demonstrated the constancy of the response of ejaculated spermatozoa from different men to SDS treatment. After 5 cycles of washing, the percentages of cells with stable nuclei after SDS treatment declined from 85 +/- 3 to 46 +/- 6% and ranged from 12 to 66% for different men. The supernatant derived from the first wash inhibited the nuclear chromatin decondensation of washed spermatozoa. Treatment of washed spermatozoa with 1 mM-zinc (which binds to -SH groups) or 1 mM-copper (which promotes oxidation of -SH groups to -S-S-) resulted in a significant increase in the proportion of cells with stable nuclear chromatin. However, the stabilizing effects of zinc could be reversed with continued washing of the cells, whereas the nuclei of copper-treated cells remained stable to SDS after additional washing. We conclude that (1) the number of spermatozoa with nuclei that are insufficiently stabilized by disulphide bonds is much higher in the semen of fertile men than was previously thought, (2) significant differences exist among fertile men in the proportions of ejaculated spermatozoa extensively stabilized by disulphide bonds, and (3) removal of seminal plasma and/or cellular contaminants (zinc) is necessary to unveil the instability of the nuclear chromatin in the ejaculated spermatozoa of fertile men.

Cell Nucleus↗

Thyrotrophin-releasing hormone in human ejaculate.

Immunoassayable TRH in human ejaculate was eluted from a gel column in a form with a molecular weight larger than that of the native peptide. With reverse-phase high-performance liquid chromatography (HPLC) the same activity co-eluted with standard TRH. Incubation of ejaculates at room temperature for 8 h was associated with a time-related increase in the total immunoassayable TRH. Analysis by HPLC of ejaculates after 12 h of incubation at room temperature indicated that, whereas the levels of the peptide co-eluting with native TRH declined with time, there was a concomitant increase in the concentration of a molecular species which also cross-reacted with the TRH antiserum, but which was more hydrophobic. The latter species is presumably identical to the tetrapeptide recently described by others and which may arise from the proteolytic degradation of secretory macromolecules. Although immunological activity was present in all six fractions of split ejaculates, the bulk of the peptide was associated with the later portions, implying a major vesicular contribution. However, secretions isolated from surgical preparations of the seminal vesicles contained undetectable levels of peptide, suggesting that the ejaculation process may represent a stimulus for its appearance in the semen. This study is further support for a local involvement of TRH in male reproductive function.

Chromatography, Gel↗

Semen characteristics in pubertal boys. I. Semen quality after first ejaculation.

Semen specimens from 134 pubertal boys were examined, and some 274 assays were made. An analysis of the biological quality of semen in relation to the period of time after first ejaculation brings high values of statistical dependence of the volume of semen, its liquefaction, spermatozoal concentration, percentage of morphologically normal forms of spermatozoa, and normal spermatozoal motility on the period of time after first ejaculation. Normal figures for semen volume, semen liquefaction, spermatozoal concentration, and morphology are observed 12-14 months after first ejaculation. The percentage of normally motile spermatozoa becomes standard 21-23 months after first ejaculation. There were changes in semen characteristics from azoospermia through cryptozoospermia, oligozoospermia, and asthenozoospermia to normospermia. Azoospermia dominates until the fifth month after the first ejaculation, oligozoospermia from the sixth to the eleventh month, asthenozoospermia from the twelfth to the twentieth month, and normospermia from the twenty-first month.

Adolescent↗