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Uwe Hartmann

Publications and source records attributed to Uwe Hartmann.

18 recordsLinked to original sources
PubMed2007

[Sexuality and pharmacotherapy. Medication-induced disorders of sexual response and pharmacotherapeutic options for the treatment of sexual dysfunctions].

This contribution addresses two different areas of the complex relationship between pharmacotherapy and sexual function and dysfunction in men and women. As many impairments of sexual function are caused by side effects of medications, particularly psychotropic drugs, the first part of the paper describes substances and mechanisms often related to sexual dysfunction with a special focus on antidepressants and neuroleptics. While serotonin reuptake inhibitors entail a high risk of sexual dysfunction, it is often difficult to differentiate the negative impact of the drug from the impairment caused by the mental disorder itself. Ways to deal with these dysfunctions and remedial measures are discussed. In the second section, current pharmacological treatments for female and male sexual dysfunctions are reviewed. While there is no approved pharmacotherapy with established efficacy for female sexual dysfunction with the possible exception of the transdermal testosterone patch for surgically menopausal women, effective pharmacological therapies are available for male erectile disorders. In addition, testosterone substitution is the treatment of choice for hypoactive sexual desire disorders caused by hypogonadism. As sexual dysfunctions are often caused by a mixture of psychological and organic factors, treatment strategies combining pharmacological options and sex therapy are advocated.

Combined Modality Therapy↗
PubMed2006

Erectile dysfunctions in patient-physician communication: optimized strategies for addressing sexual issues and the benefit of using a patient questionnaire.

INTRODUCTION: Erectile dysfunctions are prevalent but underdiagnosed and undertreated health problems. Communication barriers between patients and physicians are one of the main reasons for this and responsible for a low report rate of sexual dysfunction. AIM: The main aim of the study was to investigate which phrasing and communication strategies gained the highest acceptance from physicians and their patients and were considered the most effective. MAIN OUTCOME MEASURES: A documentation form on which each consultation was rated by the participating physicians. METHODS: A large group of physicians was asked to hand out a short patient questionnaire to all male patients over 30 years. The physician was instructed to discuss the questionnaire with the patient and to ask him about sexual problems. A total of 1,191 physicians took part in the study that documented a total of 10,622 consultations with an average duration of 15 minutes. RESULTS: The main results were: (i) the patient questionnaire found a high level of acceptance and 54% of discussions of sexual health were prompted by it; (ii) the patients' reaction to physicians addressing sexual health was positive in more than two-thirds of the sample and characterized by openness, willingness to communicate, and relief that their sexual problems had been addressed; (iii) from the physicians' perspective, the most favored communication strategies were a clear signaling of a willingness to talk, and addressing treatment possibilities or signaling that help was available; and (iv) the resulting discussion led to further diagnostic measures in 25% of patients and to further therapeutic measures in 60% of patients. CONCLUSIONS: There are good grounds for concluding that: (i) addressing a patient's sexual health as part of a physician's everyday routine is feasible in terms of duration and content; and (ii) a short patient questionnaire is an excellent aid for patients and physicians for initiating communication on the topic.

Adult↗
PubMed2006

Sexual behaviour, sexual dysfunctions and related help seeking patterns in middle-aged and elderly Europeans: the global study of sexual attitudes and behaviors.

To study the sexual activity and the prevalence of sexual dysfunctions and related help seeking behaviour, among people in Europe aged 40-80 years. A telephone survey was carried out in 2001-2002 in Sweden, the UK, Belgium, Germany, Austria, France, Spain and Italy, of 4,977 men and 5,023 women, using a structured, standardized questionnaire Eighty-three percent of men and 66% of women had sexual intercourse during the year preceding the interview. The sexual dysfunctions most frequently reported were early ejaculation (11%) and erectile dysfunction (8%) in men; and a lack of sexual interest (18%), an inability to reach orgasm (13%) and lubrication difficulties (11%) in women. Of the 23% of men and 32% of women who reported sexual dysfunction, 26% had consulted a physician, with considerable between-country differences. Sexual activity is widespread among adult middle-aged and elderly people, but many experience sexual dysfunctions and few seek medical care.

Adult↗
PubMed2006

Endocrine alterations during a detoxification treatment with carbamazepine in male alcoholics.

This study aimed to evaluate the prevalence and time-course of endocrine alterations in male alcohol addicts during a detoxification treatment and to examine a possible relation between endocrine alterations and depressive symptoms and overall mental distress. Blood samples were drawn in 54 male alcohol addicts on admission, at day 7 of treatment and at day 14 on discharge. Endocrine analysis was performed for cortisol, luteinizing hormone, prolactin, androgens, free testosterone and 17beta-estradiol. Psychometric measures (Beck's depression inventory and the symptom checklist-90-R) were taken on admission and on discharge and were correlated with endocrine measures. Cortisol plasma levels were substantially increased at the beginning of the detoxification, whereas all other endocrine parameters were within the normal range. Although subjects depicted mild to moderate levels of depressive symptoms and mental distress, there were no correlations with endocrine variables. Further analysis revealed a high variation in sex steroid levels with approximately 55% of participants showing initial (n = 19) or developing (n = 11) hypogonadal values during detoxification. In conclusion, chronic alcohol consumption induces disturbances of gonadal function which are reversible in the majority of cases. However, few patients develop a hypogonadal state during detoxification. Initially increased cortisol levels indicate a bodily stress response with the onset of alcohol withdrawal but are not related to mental disturbances.

Adult↗
PubMed2005

Prolactinergic and dopaminergic mechanisms underlying sexual arousal and orgasm in humans.

Dopaminergic mechanisms play a major role in modulating sexual behavior in humans and animals. Animal data demonstrate important interactions between the dopaminergic and prolactinergic system. As recently demonstrated, dopamine agonists have facilitatory properties for penile erection but may also enhance sexual drive and orgasmic quality. In contrast, chronic elevations of prolactin inhibit appetitive as well as consummatory parameters of sexual behavior. Recent human studies show a marked increase in prolactin after orgasm in males and females. Concerning the biological relevance of acute prolactin alterations after orgasm, prolactin might serve as a neuroendocrine reproductive reflex for peripheral reproductive organs. Alternatively, prolactin may feedback to dopaminergic neurons in the central nervous system and thereby modulate sexual drive and satiation. Here, we provide a brief overview of the physiology of dopamine and prolactin in regulating sexual behavior. In addition, recent experimental and clinical evidence for a postulated feedback mechanism for prolactin and its implications for orgasmic disorders are discussed.

Dopamine↗
PubMed2005

Ecstasy (MDMA) mimics the post-orgasmic state: impairment of sexual drive and function during acute MDMA-effects may be due to increased prolactin secretion.

Methylenedioxymethamphetamine (MDMA or "Ecstasy") is a major stimulant drug of abuse worldwide. MDMA produces euphoria, enhances interpersonal communication and feelings of closeness with others. In contrast to the induced emotions of affection and sensual enhancement, clinical studies show that it impairs sexual drive and functioning. In drug-free humans, sexual stimulation with orgasm induces a pronounced secretion of prolactin, which may mediate the post-orgasmic state. The phenomenological features of the psychological state induced by MDMA show some similarities with features of the post-orgasmic state. In addition, MDMA also induces a prominent increase of prolactin plasma levels with a similar time kinetic compared to the post-orgasmic prolactin increase. Here, we present the hypothesis that the impairment of sexual parameters after MDMA may be mediated by increased prolactin.

N-Methyl-3,4-methylenedioxyamphetamine↗
PubMed2005

Psychological and interpersonal dimensions of sexual function and dysfunction.

INTRODUCTION: There are limited outcome data on the efficacy of psychological interventions for male and female sexual dysfunction and the role of innovative combined treatment paradigms. AIM: To highlight the salient psychological and interpersonal issues contributing to sexual health and dysfunction; to offer a four-tiered paradigm for understanding the evolution and maintenance of sexual symptoms; and to offer recommendations for clinical management and research. METHODS: An International Consultation assembled over 200 multidisciplinary experts from 60 countries into 17 committees. The recommendations of committee members represent state-of-the-art knowledge and opinions of experts from five continents were developed in a process over a 2-year period. Concerning the Psychological and Interpersonal Committee of Sexual Function and Dysfunction, there were nine experts from five countries. MAIN OUTCOME MEASURE: Expert opinion was based on grading of evidence-based medical literature, widespread internal committee discussion, public presentation, and debate. RESULTS: Medical and psychological therapies for sexual dysfunctions should address the intricate biopsychosocial influences of the patient, the partner, and the couple. The biopsychosocial model provides a compelling reason for skepticism that any single intervention (i.e., a phosphodiesterase type 5 inhibitor, supraphysiological doses of a hormone, processing of childhood victimization, marital therapy, pharmacotherapy of depression, etc.) will be sufficient for most patients or couples experiencing sexual dysfunction. CONCLUSIONS: There is need for collaboration between healthcare practitioners from different disciplines in evaluation, treatment, and education issues surrounding sexual dysfunction. In many cases, neither psychotherapy alone nor medical intervention alone is sufficient for the lasting resolution of sexual problems. Assessment of male, female, and couples' sexual dysfunction should ideally include inquiry about: predisposing, precipitating, maintaining, and contextual factors. Treatment of lifelong and/or chronic dysfunction will be different from acquired or recent dysfunction. Research is needed to identify efficacious combined and/or integrated treatments for sexual dysfunction.

Anxiety↗
PubMed2004

Effects of sexual arousal on lymphocyte subset circulation and cytokine production in man.

OBJECTIVE: Sexual arousal and orgasm induce an increase in sympathetic activity as well as in catecholamine and prolactin plasma concentrations. However, the effects of sexual arousal and orgasm on immune functions in man are unknown. Thus, this study investigated the effects of masturbation-induced orgasm on lymphocyte circulation and cytokine production in healthy young males. METHODS: In a crossover design, 11 volunteers completed an experimental condition in which they were asked to masturbate until orgasm and to participate in a control condition without sexual activity. Blood was drawn continuously for determination of endocrine parameters. In addition, leukocyte and lymphocyte subsets were analyzed via flow cytometry, and the production of lipopolysaccharide-induced interleukin 6 and tumor necrosis factor alpha was measured before and then 5 and 45 min after the orgasm. RESULTS: The results confirmed transient increases in adrenaline and prolactin plasma concentrations. Sexual arousal and orgasm increased the absolute number of leukocytes, in particular natural killer cells (CD3-CD16+CD56+), in the peripheral blood. In contrast, T cell (CD3+) and B cell (CD3-CD20+) subpopulations as well as the production of interleukin 6 and tumor necrosins factor alpha remained unaffected by sexual activity. CONCLUSION: These findings demonstrate that components of the innate immune system are activated by sexual arousal and orgasm.

Adult↗
PubMed2003

Effect of sildenafil (Viagra) on cerebral blood flow velocity: a pilot study.

Sildenafil (Viagra) is a selective inhibitor of the cyclic guanosine monophosphate (cGMP) specific phosphodiesterase 5 (PDE5) used for the oral treatment of male erectile dysfunction due to vasodilation. However, assessment of direct effects of sildenafil on cerebral arteries is unknown. The aim of this present experiment is to measure the possible changes in blood flow velocity of the middle cerebral artery after the administration of sildenafil and a placebo. Blood-flow velocity changes of the middle cerebral artery were measured before and 1 to 2 h after the administration of the drug. Neither the intake of sildenafil nor the application of placebo resulted in any significant changes in blood flow velocity of the right middle cerebral artery. The next step for future experiments will be in vitro measurement of the diameters of the cerebral arteries under the influence of sildenafil and in vivo measurement of carbon dioxide and cerebral blood flow velocity during sexual stimulation after sildenafil intake instead of under resting conditions.

Adult↗
PubMed2003

On the function of groaning and hyperventilation during sexual intercourse: intensification of sexual experience by altering brain metabolism through hypocapnia.

Sexual arousal is accompanied by some typical physiological reaction patterns. Another typical feature of sexual intercourse is involuntary sound production implying in its more intense forms acceleration of breathing (hyperventilation). Up to now no study examined spCO2 during intense sexual intercourse, but there is evidence that some degree of hyperventilation with its physiological consequences may often be induced during sexual intercourse. This article discusses implications of hyperventilation during sexual intercourse for alterations of consciousness and subjective experience in the light of recent studies of brain metabolic changes during states of hyperventilation. Groaning and hyperventilation are interpreted in this context as a psychophysiological mechanism to deepen states of sexual trance.

Brain↗
PubMed2003

Acute neuroendocrine response to sexual stimulation in sexual offenders.

BACKGROUND: Several pharmacotherapeutic approaches have confirmed the influence of neuroendocrine parameters on sexual desire, function, and fantasies in men; however, the relevance of acute neuroendocrine changes in mediating heightened sexual drive remains unknown. We recently demonstrated that plasma prolactin substantially increases following orgasm in healthy men, suggesting a feedback mechanism for peripheral prolactin in the control of acute sexual arousal. Because prolactin appears to play a regulatory role in acute sexual drive, we initiated this study to see whether sexual offenders with a high sexual drive have a different neuroendocrine response to sexual arousal. This study compares the prolactin response to orgasm of sexual offenders with high sexual drive and that of healthy subjects with average sexual drive. METHODS: From a subject pool of 150 inpatients held because of sexual crimes, we recruited 10 volunteers, based on their high sexual drive according to an intensive, semistructured clinical interview. We defined sexual drive by a short refractory period and strong sexualization, or a high frequency of sexual stimulation. We analyzed the acute psychoneuroendocrine response to sexual arousal and orgasm continuously before, during, and after masturbation-induced orgasm in patients and control subjects. RESULTS: Sexual offenders demonstrated higher sexual desire (P < 0.001) and function (P < 0.001) and a more positively perceived refractory period (P < 0.05). Both groups displayed a prolonged, significant increase in prolactin plasma levels after orgasm (P < 0.001). Sexual offenders did not differ from control subjects in neuroendocrine response to sexual arousal and orgasm. CONCLUSIONS: These data demonstrate that sexual offenders with a high sexual drive do not differ from control subjects in the postorgasmic neuroendocrine response, particularly in prolactin release. This study confirms that factors other than peripheral hormones influence deviant sexual behaviour.

Adult↗
PubMed2002

Female sexual desire disorders: subtypes, classification, personality factors and new directions for treatment.

Lack of sexual interest is highly prevalent in the general female population and, for more than two decades, low sexual desire has been the most common presenting problem in clinical institutions. The renewed interest in female sexual dysfunction has recently focused on biological and classification aspects whilst personality- and partner-related factors, as well as theoretical concepts, have largely been neglected. After critically reviewing the current diagnostic systems for female desire disorders, this paper specifically addresses the issues of personality and life history factors. In two empirical studies, 50 patients with low sexual desire were compared to a group of 100 sexually functional women by employing both semi-structured clinical interviews and a set of self-developed and standardised questionnaires. The results of these studies indicate that women seeking help for desire disorders exhibit marked signs of mood instability and a low and fragile self-regulation and self-esteem. In addition, they tend to be more worried, anxious, introverted and conventional when compared to sexually functional women. Interestingly, no significant differences in the variables relating to partnership quality in general could be detected. Although caution is needed due to sample size and methodological limitations, our results suggest a substantial level of at least subclinical psychiatric symptoms like mood-disorders, low self-esteem and feelings of guilt in women with sexual desire disorders. These problems seem to be rather deep-rooted and particularly affect the self-regulation and the inner balance of the personality. Overall, female sexual dysfunctions and low desire, in particular, cannot be conceptualised as discrete phase disorders, but rather as a global inhibition of sexual response together with a history of mood disorder, specific personality factors and an elevated level of psychological stress. This combination calls for broad-band treatment approaches where individual and interpersonal aspects can be taken into account simultaneously. In addition, the ubiquitous comorbidity, both with other sexual dysfunctions and with various personality and psychological problems, and the developmental sequence of the sexual problems must be adequately considered.

Female↗
PubMed2002

Cavernous and systemic plasma levels of norepinephrine and epinephrine during different penile conditions in healthy men and patients with erectile dysfunction.

OBJECTIVES: To examine and compare the courses of norepinephrine (NE) and epinephrine (E) plasma levels in the systemic and cavernous blood taken during different penile conditions from healthy men and a group of patients with erectile dysfunction (ED). Knowledge concerning the neurophysiology of penile erection has improved tremendously during the past two decades. However, only few in vivo studies on human peripheral neurotransmission have been carried out to date. METHODS: Fifty-three healthy adult male subjects and 47 patients with ED of different etiologies were exposed to erotic stimuli to elicit penile tumescence and, in the group of healthy subjects, rigidity. Whole blood was simultaneously aspirated from the corpus cavernosum and the cubital vein during different penile conditions. Plasma levels of NE and E were determined by means of a radioimmunoassay. RESULTS: In the healthy subjects, a significant reduction of NE in cavernous plasma was detected from flaccidity (362 +/- 173 pg/mL) to rigidity (248 +/- 122 pg/mL), followed by an increase in the detumescence phase (336 +/- 199 pg/mL). Changes in NE levels in the peripheral plasma were less pronounced. Cavernous E levels significantly increased from flaccidity (47 +/- 41 pg/mL) to tumescence (130 +/- 106 pg/mL) and dropped from rigidity (113 +/- 67 pg/mL) to detumescence (76 +/- 57 pg/mL). The course of systemic E plasma levels was similar to that in the cavernous blood. In contrast, median NE levels in the systemic and cavernous blood of the ED group slightly increased from flaccidity to tumescence (from 199 +/- 88 pg/mL to 210 +/- 99 pg/mL and from 273 +/- 140 pg/mL to 278 +/- 118 pg/mL, respectively). CONCLUSIONS: In healthy men, penile erection is accompanied by a reduction of NE in the cavernous blood and a rise in E levels in the peripheral and cavernous blood. That NE levels in the cavernous and systemic blood increase during sexual arousal in patients with ED might be an indication of a somatic dysregulation in sympathetic transmission or alterations of NE reuptake mechanisms as a cause of impaired erectile function.

Adult↗
PubMed2002

Serum levels of human growth hormone during different penile conditions in the cavernous and systemic blood of healthy men and patients with erectile dysfunction.

OBJECTIVES: To detect changes in growth hormone (GH) serum levels during different penile conditions in the cavernous and systemic blood of patients with erectile dysfunction and compare them with the course of GH registered in healthy men. It has been suggested that human GH is involved in sexual maturation and plays a regulatory role in male reproductive function. Deficiency may result in fatigability, loss of sexual desire and erection, or oligospermia or azoospermia. It is assumed that the biologic effects of GH include insulin-like growth factor 1-mediated stimulation of endothelial nitric oxide formation. It has recently been demonstrated that GH serum levels in the systemic and cavernous blood of healthy men increases during developing penile erection. METHODS: Thirty-five healthy adult men and 45 patients with erectile dysfunction of either organogenic or psychogenic etiology were exposed to visual and tactile erotic stimuli to elicit penile tumescence and, in the group of healthy subjects, rigidity. Whole blood was simultaneously aspirated from the corpus cavernosum and the cubital vein during the different functional conditions of the penis. Serum levels of GH were determined by means of an immunoradiometric assay. RESULTS: In the healthy subjects, systemic GH serum levels significantly increased during penile tumescence, followed by a transient decline from tumescence to rigidity and detumescence. In the unselected patients, the mean GH levels during penile flaccidity were determined to be about sevenfold lower than those registered in the blood of the healthy men. During penile tumescence, the mean increase in the GH levels in the systemic and cavernous blood of psychogenic patients was comparable to that seen in healthy men, but, in the group of organogenic patients, this increase was found to be negligible. CONCLUSIONS: We believe our data provide strong evidence that GH may be of major importance in the maintenance of male erectile capability-probably through a stimulating effect on cyclic guanosine monophosphate generation in human cavernous smooth muscle-and that a decline in GH release may contribute to the manifestation of erectile dysfunction.

Adult↗
PubMed2002

Orgasm-induced prolactin secretion: feedback control of sexual drive?

Recent studies from our laboratory have investigated the hormonal response to various forms of sexual stimulation, including film, masturbation, and coitus in both men and women. This series of studies clearly demonstrated that plasma prolactin (PRL) concentrations are substantially increased for over 1h following orgasm (masturbation and coitus conditions) in both men and women, but unchanged following sexual arousal without orgasm. Here we discuss evidence suggesting that the PRL response to orgasm may play an important role in the control of acute sexual arousal following orgasm. Supporting this position, chronic elevations of PRL (hyperprolactinemia) produce pronounced reductions in animal sexual activity, and significant reduction of libido and gonadal function in both men and women. These data suggest that PRL may represent a peripheral regulatory factor for reproductive function, and/or a feedback mechanism that signals CNS centres controlling sexual arousal and behaviour. Thus, we propose a theoretical model of the role of PRL as a neuroendocrine reproductive reflex.

Animals↗
PubMedDate not supplied

Low sexual desire in midlife and older women: personality factors, psychosocial development, present sexuality.

OBJECTIVE: Recent population-based surveys indicate that the prevalence of sexual dysfunction, particularly low sexual desire and arousal disorders, is increasing with age. However, there seems to be greater variability of the sexual experience and functioning in midlife and older women, suggesting a higher dependence on basic conditions like general well-being, physical and mental health, quality of relationship, and life situation. DESIGN: A series of studies was conducted in the authors' Female Sexual Dysfunction research group to assess differences in (1) determinants of sexual satisfaction, (2) personality factors, and (3) present sexuality between younger and older women in both patient and nonpatient populations. RESULTS: The results of these studies highlight that in comparison with functional women, patients with hypoactive sexual desire are generally characterized by a vulnerable self-system with several rather inadequate self-regulatory mechanisms. The results of the brief sexual function questionnaire indicate that the present sexuality of women seeking professional help for low sexual desire is significantly different from the sexuality of a control group of nonpatients. These between-group effects proved to be far more important than any age effects within both groups and showed that all domains of sexuality were negatively affected and overshadowed by the sexual dysfunction. CONCLUSIONS: These results are supportive of the growing evidence against a simple model of midlife sexuality that depicts women as victims of their bodily and hormonal changes. Instead, life stressors, contextual factors, past sexuality, and mental health problems are more significant predictors of midlife women's sexual interest than menopause status itself. Evaluation and treatment approaches require consideration of the full range of contextual factors, including relationship quality, personality factors, past experience, and mental and physical health.

Aged↗