RESUMO
Sexual Interest/Arousal Disorder (distressing, long-lasting impairments in sexual desire and/or arousal) is common in women, but few have access to efficacious psychotherapies, including cognitive-behavioral therapy (CBT) and mindfulness-based therapy (MBT). eSense, an online program meant to maximize treatment access, has been shown to be a feasible, satisfactory, and potentially efficacious intervention. However, subpopulations such as sexual assault survivors may find the program less usable or efficacious. The current study compared women with and without a history of sexual assault (SA) regarding their ability to use and benefit from eSense. Forty-four women (22 with a history of SA; M age = 34.20 years) used eSense (CBT or MBT) and completed validated self-report scales of sexual function, sexual distress, treatment satisfaction, and homework compliance. A history of SA did not predict differences in attrition or changes in clinical outcomes. Exploratory analyses suggested that women with a history of SA reported slightly higher difficulty completing homework assignments, but also slightly higher treatment satisfaction. These preliminary results suggest that eSense may be usable and helpful for women with a history of SA. We discuss ways to maximize the acceptability and efficacy of online programs for women with a history of SA.
Assuntos
Atenção Plena , Delitos Sexuais , Disfunções Sexuais Psicogênicas , Humanos , Feminino , Adulto , Comportamento Sexual , Libido/fisiologia , Disfunções Sexuais Psicogênicas/terapia , Atenção Plena/métodos , Nível de AlertaRESUMO
Oxidative stress has been linked with sleep deprivation (SD)-induced pathological conditions and reproductive dysfunction. On the other hand, glutamine has been established to have antioxidant property. However, the impact of SD, with or without glutamine, on male reproductive function is yet to be elucidated. Thus, this study was designed to investigate the role of SD, with or without glutamine, on male reproductive function and possible associated mechanisms. Ten-week old male Wistar rats weighing 175.6 g± 0.42 were randomly assigned into vehicle that received per os (p.o.) distilled water, glutamine (1 g/kg; po), SD, and SD + glutamine that received treatments as glutamine and SD. Treatment/exposure lasted for 72 h. The results showed that SD led to reduced body weight, seminiferous luminal and epididymal sperm density, low sperm quality, increased testicular and epididymal malondialdehyde, uric acid, DNA fragmentation, and testicular injury markers. In addition, SD caused a reduction in reduced glutathione level and activities of superoxide dismutase, catalase, glucose-6-phosphate dehydrogenase, glutathione peroxidase, and glutathione-S-transferase. Also, SD increased tumor necrotic factor-α, interleukin-1ß, and nuclear factor-kappa B levels. Furthermore SD led to impaired libido and erectile dysfunction, and suppression of circulatory nitric oxide, gonadotropins and testosterone, and penile cGMP. However, glutamine attenuated the effects induced by SD. Taken together, the findings of this study demonstrate that SD induces reproductive dysfunction via glutathione-dependent defense depletion and down-regulation of NO/cGMP signaling, which was abolished by glutamine supplementation.
Assuntos
GMP Cíclico/metabolismo , Glutamina/farmacologia , Óxido Nítrico/metabolismo , Disfunções Sexuais Fisiológicas/patologia , Privação do Sono/patologia , Testículo/patologia , Animais , Antioxidantes/farmacologia , Epididimo/efeitos dos fármacos , Epididimo/metabolismo , Disfunção Erétil/patologia , Libido/efeitos dos fármacos , Libido/fisiologia , Masculino , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/fisiologia , Distribuição Aleatória , Ratos , Ratos Wistar , Testículo/efeitos dos fármacosRESUMO
INTRODUCTION: Mindfulness-based therapies (MBT) are more and more frequently used in the treatment of sexual dysfunctions; therefore, it seems very important to assess evidence-based data on the clinical efficacy of these interventions. AIM: To provide a systematic review of published studies into the efficacy of MBT in the treatment of sexual dysfunctions. METHODS: The material for the analysis was obtained by searching 3 internet databases: EBSCO, PubMed, and ResearchGate. Articles describing therapeutic interventions on the basis of mindfulness and their efficiency in reducing sexual dysfunction symptoms in men and women were sought. MAIN OUTCOME MEASURES: 15 original research articles were included to the review: 4 articles were devoted to the analysis of the efficiency of the mindfulness-based therapy in the reduction of sexual dysfunction related to pain in the genital-pelvic area, 10 to desire or sexual arousal disorders or both in women, and 1 to erectile dysfunction in men. RESULTS: Studies indicate that MBT led to improvement in subjectively evaluated arousal and desire, sexual satisfaction, and a reduction of fear linked with sexual activity, as well as improving the consistency between the subjectively perceived arousal and genital response in women. The research indicated that MBT did not make a significant change in a reduction of pain during sexual activities. Evidence-based data were found on the efficacy of MBT in the treatment of male erectile dysfunction in 1 study. CLINICAL IMPLICATIONS: MBT could be effectively used in the treatment of female sexual dysfunction, specifically to improve sexual arousal/desire and satisfaction and to reduce sexual dysfunction associated with anxiety and negative cognitive schemas. STRENGTHS & LIMITATIONS: The few studies available are affected by several methodologic limitations, including small numbers of participants, patient selection, application of complex therapeutic interventions, and a lack of homework assessment, which makes definite conclusions difficult to draw. CONCLUSION: The effects of MBT in female sexual dysfunctions are promising. In future studies, the mindfulness-based monotherapies should be implemented to verify their potential in reducing symptoms of sexual dysfunction. More research is needed to explore the potential of MBT in the treatment of male sexual dysfunction. Jaderek I, Lew-Starowicz M. A Systematic Review on Mindfulness Meditation-Based Interventions for Sexual Dysfunctions. J Sex Med 2019;16:1581-1596.
Assuntos
Meditação/métodos , Atenção Plena/métodos , Disfunções Sexuais Fisiológicas/terapia , Disfunções Sexuais Psicogênicas/terapia , Adulto , Idoso , Nível de Alerta , Disfunção Erétil/terapia , Feminino , Humanos , Libido/fisiologia , Masculino , Pessoa de Meia-Idade , Orgasmo/fisiologia , Comportamento Sexual/psicologia , Disfunções Sexuais Fisiológicas/psicologia , Disfunções Sexuais Psicogênicas/psicologia , Resultado do TratamentoRESUMO
Low resting heart rate variability (HRV) has been associated with poor sexual arousal function in women. In a recent study, a single session of autogenic training increased HRV and facilitated improvements in both sexual arousal and perceived genital sensations among women experiencing decreased arousal. The current study expands upon these findings by examining the efficacy of HRV biofeedback, with and without autogenic training, as a treatment for sexual arousal dysfunction in an at-home setting. Participants (N = 78) were randomized into one of three conditions: HRV biofeedback, HRV biofeedback + autogenic training, or waitlist control. Each condition included three laboratory sessions; participants in the two active conditions completed 4-6 biofeedback sessions at home, and participants in the HRVB + A condition listened to a 14-min autogenic training recording before completing the biofeedback. Across the three laboratory visits, participants in the three conditions singficnatly differed in their genital arousal, subjective sexual arousal, and their perceived genital sensations. Compared to women in the control group, women who engaged in HRV biofeedback at home, with and without additional autogenic training, experienced increases in genital arousal, subjective sexual arousal, and perceived genital sensations. These results provide preliminary support for the contribution of heart rate variability level to female sexual arousal function and for the use of either of these interventions in the treatment of sexual arousal concerns.
Assuntos
Biorretroalimentação Psicológica/métodos , Frequência Cardíaca/fisiologia , Libido/fisiologia , Disfunções Sexuais Psicogênicas/terapia , Adolescente , Adulto , Feminino , Humanos , Disfunções Sexuais Psicogênicas/fisiopatologia , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: Regarding hypoactive sexual desire disorder (HSDD) in women, some reviewers judge the effect size small for medications vs placebo, but substantial for cognitive behavior therapy (CBT) or mindfulness meditation training (MMT) vs wait list. However, we lack comparisons of the effect sizes for the active intervention itself, for the control treatment, and for the differential between the two. AIM: For efficacy trials of HSDD in women, compare effect sizes for medications (testosterone/testosterone transdermal system, flibanserin, and bremelanotide) and placebo vs effect sizes for psychotherapy and wait-list control. METHODS: We conducted a literature search for mean changes and SD on main measures of sexual desire and associated distress in trials of medications, CBT, or MMT. Effect size was used as it measures the magnitude of the intervention without confounding by sample size. OUTCOMES: Cohen d was used to determine effect sizes. RESULTS: For medications, mean (SD) effect size was 1.0 (0.34); for CBT and MMT, 1.0 (0.36); for placebo, 0.55 (0.16); and for wait list, 0.05 (0.26). CLINICAL TRANSLATION: Recommendations of psychotherapy over medication for treatment of HSDD are premature and not supported by data on effect sizes. Active participation in treatment conveys considerable non-specific benefits. Caregivers should attend to biological and psychosocial elements, and patient preference, to optimize response. CONCLUSIONS: Few clinical trials of psychotherapies were substantial in size or utilized adequate control paradigms. Medications and psychotherapies had similar, large effect sizes. Effect size of placebo was moderate. Effect size of wait-list control was very small, about one quarter that of placebo. Thus, a substantial non-specific therapeutic effect is associated with receiving placebo plus active care and evaluation. The difference in effect size between placebo and wait-list controls distorts the value of the subtraction of effect of the control paradigms to estimate intervention effectiveness. Pyke RE, Clayton AH. Effect Size in Efficacy Trials of Women With Decreased Sexual Desire. Sex Med Rev 2018;6:358-366.
Assuntos
Androgênios/uso terapêutico , Pesquisa Biomédica/normas , Terapia Cognitivo-Comportamental , Antagonistas do Receptor 5-HT2 de Serotonina/uso terapêutico , Disfunções Sexuais Psicogênicas/terapia , Benzimidazóis/uso terapêutico , Feminino , Humanos , Libido/efeitos dos fármacos , Libido/fisiologia , Meditação , Atenção Plena , Peptídeos Cíclicos/uso terapêutico , Placebos , Testosterona/uso terapêutico , alfa-MSH/uso terapêuticoRESUMO
OBJECTIVE: To estimate the prevalence of painful sex among women in Britain, and to explore associated sexual, relationship and health factors that should be considered in assessment. DESIGN: Multi-stage, clustered and stratified population probability sample survey, using computer-assisted self-interview. Sample frame was the British Postcode Address File. SETTING: Participants interviewed at home between 2010 and 2012. SAMPLE: A total of 15 162 adults aged 16-74 years (8869 women). Data reported from 6669 sexually active women. METHODS: Age-adjusted logistic regressions to examine associations between painful sex and indicators of sexual, relational, mental and physical health. MAIN OUTCOME MEASURE: Physical pain as a result of sex for ≥3 months in the past year, plus measures of symptom severity. RESULTS: Painful sex was reported by 7.5% (95% CI 6.7-8.3) of sexually active women, of whom one-quarter experienced symptoms very often or always, for ≥6 months, and causing distress. Reporting painful sex was strongly associated with other sexual function problems, notably vaginal dryness (age adjusted odds ratio 7.9; 6.17-10.12), anxiety about sex (6.34; 4.76-8.46) and lacking enjoyment in sex (6.12; 4.81-7.79). It was associated with sexual relationship factors [such as not sharing same level of interest in sex (2.56; 1.97-3.33)], as well as with adverse experiences such as non-volitional sex (2.17; 1.68-2.80). Associations were also found with measures of psychological and physical health, including depressive symptoms (1.68; 1.28-2.21). CONCLUSION: Painful sex is reported by a sizeable minority of women in Britain. Health professionals should be supported to undertake holistic assessment and treatment which takes account of the sexual, relationship and health context of symptoms. TWEETABLE ABSTRACT: Painful sex-reported by 7.5% of women in Britain-is linked to poorer sexual, physical, relational and mental health.
Assuntos
Ansiedade/epidemiologia , Dispareunia/epidemiologia , Libido/fisiologia , Doenças Vaginais/epidemiologia , Saúde da Mulher , Adolescente , Adulto , Idoso , Ansiedade/complicações , Ansiedade/fisiopatologia , Dispareunia/etiologia , Dispareunia/fisiopatologia , Feminino , Inquéritos Epidemiológicos , Humanos , Modelos Logísticos , Pessoa de Meia-Idade , Razão de Chances , Prevalência , Qualidade de Vida , Saúde Sexual , Reino Unido , Doenças Vaginais/complicações , Doenças Vaginais/fisiopatologia , Adulto JovemRESUMO
OBJECTIVE: Although previous research provides evidence for the role of rewarding activities in reducing hypothalamic-pituitary-adrenal axis responses to stress, no studies have tested whether rewards can buffer cortisol responses in humans undergoing social stressors. METHOD: This study experimentally investigated whether viewing appetitive rewarding pictures reduces cortisol responses to an acute stress challenge. Fifty-four heterosexual men were randomly assigned to view either mildly erotic (reward) or neutral images (control) of mixed-sex couples before completing the Trier Social Stress Test (TSST). RESULTS: Participants in the reward condition had significantly lower area-under-the-curve cortisol reactivity to the TSST (mean [M] = 363.46) in comparison with participants in the control group (M = 807.06; F(1,46) = 4.84, p = .033, η(2) = 0.095). Reward participants also had improved cognitive performance on the math portion of the TSST (M = 20.74) in comparison with control participants (M = 13.82; F(44) = 5.44, p = .024, η(2) = 0.11). The stress-buffering effects of reward were specific to hypothalamic-pituitary-adrenal axis reactivity: the reward and control groups did not differ on psychological perceptions of anticipatory or poststress perceptions, heart rate, or blood pressure responses. CONCLUSIONS: This research provides the first evidence linking the experience of reward with reduced stress reactivity in humans and suggests a potential novel reward pathway for coping under stress.
Assuntos
Adaptação Psicológica/fisiologia , Literatura Erótica/psicologia , Hidrocortisona/metabolismo , Homens/psicologia , Relaxamento/fisiologia , Recompensa , Estresse Psicológico/fisiopatologia , Adolescente , Adulto , Área Sob a Curva , Pressão Sanguínea/fisiologia , Cognição/fisiologia , Frequência Cardíaca/fisiologia , Heterossexualidade , Humanos , Sistema Hipotálamo-Hipofisário/fisiopatologia , Libido/fisiologia , Masculino , Sistema Hipófise-Suprarrenal/fisiopatologia , Testes Psicológicos , Psicologia , Adulto JovemAssuntos
Tronco Encefálico/patologia , Hemorragias Intracranianas/etiologia , Hemorragias Intracranianas/patologia , Libido/fisiologia , Bloqueio Nervoso/efeitos adversos , Adulto , Anestésicos Locais/efeitos adversos , Feminino , Humanos , Libido/efeitos dos fármacos , Imageamento por Ressonância Magnética , Procaína/efeitos adversosRESUMO
The key to understand female sexual response cycle is a multidimensional approach to sexual reactions, where emotional satisfaction (emotional intimacy with the partner) might be more important than physical satisfaction (orgasm). Such holistic approach might in fact make the diagnosis and treatment of female sexual dysfunctions, which are becoming increasingly common in clinical and gynecological practice, easier and more effective. The aim of the study is to present contemporary model of female sexual response cycle and to encourage specialists to view female sexuality in more broad and holistic perspective.
Assuntos
Coito/fisiologia , Libido/fisiologia , Sexualidade/fisiologia , Saúde da Mulher , Feminino , Humanos , Periodicidade , Satisfação Pessoal , Parceiros SexuaisRESUMO
INTRODUCTION: Earlier studies have shown that sildenafil may modify some aspects of male rat sexual behavior and sexual incentive motivation. Stimulation of endothelial nitric oxide synthase (eNOS) has also been reported to affect sexual motivation in old rats. AIM: To determine the effects of sildenafil and a compound stimulating eNOS on copulatory behavior and sexual incentive motivation in young adult Fisher 344 and Wistar male rats. METHODS: The rats were selected for a low intromission ratio, and then treated with Impaza (stimulator of eNOS), sildenafil, or Impaza + sildenafil for 28 days. Tests for copulatory behavior and sexual incentive motivation were performed before the beginning of treatment and at days 7, 14, and 28 of treatment. MAIN OUTCOME MEASURES: Standard parameters of copulatory behavior and sexual incentive motivation. Measurements of penis length at mount, intromission, and ejaculation. RESULTS: The Fisher 344 rats displayed a higher level of sexual incentive motivation than the Wistar rats, while the copulatory behavior was similar in both strains. Impaza and sildenafil enhanced the sexual incentive motivation after 28 days of treatment in the Wistar rats, but failed to do so in the Fisher 344 rats. The copulatory behavior was unaffected in the Wistar strain, while the Fisher 344 males had an enhanced intromission ratio after treatment with Impaza and sildenafil for 28 days. CONCLUSIONS: The nitric oxide-guanylyl cyclase pathway seems to be of importance for sexual incentive motivation in animals with a modest baseline level. The different drug effects in the Wistar and Fisher 344 rats can be attributed to baseline differences. The importance of eNOS for sexual functions should not be overlooked.
Assuntos
Anticorpos/farmacologia , Copulação/efeitos dos fármacos , Homeopatia , Libido/efeitos dos fármacos , Motivação , Óxido Nítrico Sintase Tipo III/fisiologia , Inibidores de Fosfodiesterase/farmacologia , Piperazinas/farmacologia , Comportamento Sexual Animal/efeitos dos fármacos , Sulfonas/farmacologia , Vasodilatadores/farmacologia , Administração Oral , Animais , Libido/fisiologia , Masculino , Ereção Peniana/efeitos dos fármacos , Inibidores da Fosfodiesterase 5 , Purinas/farmacologia , Ratos , Ratos Endogâmicos F344 , Ratos Wistar , Comportamento Sexual Animal/fisiologia , Citrato de Sildenafila , Especificidade da EspécieRESUMO
INTRODUCTION: Sexual dysfunction after breast cancer has been attributed to a variety of treatment associated and psychological factors. Data on the role of a treatment-induced decrease of testosterone for the development of sexual problems in breast cancer survivors have remained inconclusive. However, androgen metabolites constitute a more reliable measure for total androgen activity. AIM: To measure levels of total androgen activity in breast cancer patients and to investigate relevant predictors of sexual dysfunction after breast cancer. METHODS: Twenty-nine patients with a premenopausal diagnosis of Stage I or II breast cancer and terminated adjuvant treatment, completed questionnaires on sexuality, quality of relationship, body image, and depression. In addition, blood samples were taken for the analysis of sex steroids. MAIN OUTCOME MEASURES: Female Sexual Function Index (FSFI), Relationship (PFB), Beck Depression Inventory, and European Organization for Research and Treatment of Cancer quality of life questionnaire. Analysis of dihydroepiandrosterone, dihydroepiandrosterone-sulfate, androstenedione, 17beta-diol, testosterone, dihydrotestosterone, androsterone, and ADT-G, 3-alpha-diol-3G, 3-alpha-diol-17G. RESULTS: Low levels of sex steroids reflected the medication-induced postmenopausal status independent of the type of chemotherapy treatment. Sexual dysfunction was present in 68% of the study group. Women with a history of chemotherapy were more affected in all of the FSFI-domains. The only predictor for desire was quality of relationship, while chemotherapy was predictive for problems with arousal, lubrication, orgasm, and sexual pain. Sexual satisfaction and higher FSFI sum scores were predicted by better quality of relationship and no history of chemotherapy, together explaining 54.2% and 49.7% of the variance. CONCLUSIONS: Sexual dysfunction after breast cancer is common and women should be informed properly at an early stage of treatment. Specific interventions have to be offered considering person-related preexisting factors and couples at risk should be supported in the transition to sexual life after breast cancer.
Assuntos
Androgênios/sangue , Neoplasias da Mama/sangue , Pré-Menopausa/sangue , Disfunções Sexuais Fisiológicas/sangue , Adulto , Androsterona/sangue , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Quimioterapia Adjuvante , Terapia Combinada , Di-Hidrotestosterona/sangue , Estradiol/sangue , Feminino , Humanos , Libido/fisiologia , Pessoa de Meia-Idade , Orgasmo/fisiologia , Disfunções Sexuais Fisiológicas/diagnóstico , Disfunções Sexuais Fisiológicas/psicologia , Testosterona/sangueRESUMO
OBJECTIVE: The objective of the study was to evaluate the association of depression, sleep disturbance, and menopausal symptoms with diminished libido. STUDY DESIGN: Data from a 2001-2002 baseline survey of 341 peri- and postmenopausal women, aged 45-55 years, participating in a randomized trial, was analyzed. Eligibility included at least 2 hot flashes and/or night sweats per day and no hormone therapy for at least the prior 3 months. The survey evaluated sexual function, depression, sleep, and vasomotor symptoms. We examined the association between these factors, using multivariate regression models. RESULTS: Of 341 women, 64% had diminished libido, 18% had moderate to severe depression, and 43% had poor sleep quality. Women averaged 4.6 hot flashes and 1.9 night sweats per day. Depressive symptoms (P = .003), poor sleep (P = .02), and night sweats (P = .04) were significantly associated with diminished libido. CONCLUSION: Factors associated with diminished libido in midlife are complex but include depression, disturbed sleep, and night sweats, all common symptoms of the menopausal transition and early menopause.
Assuntos
Depressão/fisiopatologia , Fogachos/fisiopatologia , Libido/fisiologia , Distúrbios do Início e da Manutenção do Sono/fisiopatologia , Depressão/diagnóstico , Dispareunia/fisiopatologia , Feminino , Humanos , Menopausa/fisiologia , Pessoa de Meia-Idade , Pós-Menopausa/fisiologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Inquéritos e QuestionáriosRESUMO
The human male psychosexual cycle consists of four phases: excitation, plateau, orgasm, and resolution. Identification of the specific neural substrates of each phase may provide information regarding the brain's pathophysiology of sexual dysfunction. We previously analyzed regional cerebral blood flow (rCBF) with H(2)15O-positron emission tomography (PET) during the excitation phase (initiation of penile erection) induced by audiovisual sexual stimuli (AVSS) and identified activation of the cerebellar vermis, the bilateral extrastriate cortex, and right orbitofrontal cortex, suggesting a role of cognition/emotion in the excitement phase. In the present study, we analyzed rCBF of the same six healthy volunteers during the plateau phase (maintenance of penile erection) induced by AVSS and compared the results with those of the excitation phase. Penile rigidity was monitored in real time with RigiScan Plus during PET scanning. Images were analyzed by statistical parametric mapping (SPM) software, and rCBF in the amygdala, hypothalamus, anterior cingulate, and insula was measured. During the plateau phase, primary subcortical activation was noted in the right ventral putamen, indicating motivational factors in the sexual response via the limbic reward circuit. A significant increase in rCBF in the left hypothalamus was also observed during the plateau phase. The right anterior cingulate and left insula were specifically activated during the excitation phase but not during the plateau phase. These results indicate a significant role of the ventral putamen and the hypothalamus in the plateau phase and confirm that paralimbic and limbic components of the human brain differentially coordinate the sexual response in a psychosexual phase-dependent manner.
Assuntos
Encéfalo/diagnóstico por imagem , Encéfalo/fisiologia , Libido/fisiologia , Ereção Peniana/fisiologia , Comportamento Sexual/fisiologia , Adulto , Algoritmos , Mapeamento Encefálico , Interpretação Estatística de Dados , Emoções/fisiologia , Lateralidade Funcional/fisiologia , Humanos , Hipotálamo/fisiologia , Masculino , Modelos Estatísticos , Motivação , Estimulação Luminosa , Tomografia por Emissão de Pósitrons , Putamen/fisiologia , Técnicas EstereotáxicasRESUMO
BACKGROUND: Although pedophilia is of high public concern, little is known about underlying neural mechanisms. Although pedophilic patients are sexually attracted to prepubescent children, they show no sexual interest toward adults. This study aimed to investigate the neural correlates of deficits of sexual and emotional arousal in pedophiles. METHODS: Thirteen pedophilic patients and 14 healthy control subjects were tested for differential neural activity during visual stimulation with emotional and erotic pictures with functional magnetic resonance imaging. RESULTS: Regions showing differential activations during the erotic condition comprised the hypothalamus, the periaqueductal gray, and dorsolateral prefrontal cortex, the latter correlating with a clinical measure. Alterations of emotional processing concerned the amygdala-hippocampus and dorsomedial prefrontal cortex. CONCLUSIONS: Hypothesized regions relevant for processing of erotic stimuli in healthy individuals showed reduced activations during visual erotic stimulation in pedophilic patients. This suggests an impaired recruitment of key structures that might contribute to an altered sexual interest of these patients toward adults.
Assuntos
Literatura Erótica/psicologia , Hipotálamo/fisiopatologia , Pedofilia/diagnóstico , Córtex Pré-Frontal/fisiopatologia , Percepção Visual/fisiologia , Potenciais de Ação/fisiologia , Adulto , Fatores Etários , Criança , Grupos Controle , Emoções/fisiologia , Lateralidade Funcional/fisiologia , Humanos , Libido/fisiologia , Imageamento por Ressonância Magnética/estatística & dados numéricos , Masculino , Modelos Neurológicos , Pedofilia/fisiopatologia , Pedofilia/psicologia , Estimulação Luminosa , Desempenho Psicomotor/fisiologia , Tempo de Reação/fisiologia , Recrutamento Neurofisiológico/fisiologiaAssuntos
Libido , Pós-Menopausa , Acupuntura , Androgênios/administração & dosagem , Androgênios/efeitos adversos , Androgênios/fisiologia , Animais , Feminino , Terapia de Reposição Hormonal/efeitos adversos , Humanos , Libido/fisiologia , Norpregnenos/uso terapêutico , Fitoterapia , Pós-Menopausa/fisiologia , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
Erectile dysfunction affects an estimated one in ten men in the United States. According to one study, the prevalence of impotence at all degrees is approximately 52% in men aged 40 to 70 years. This prevalence rate might be underestimated, given patients' reluctance to discuss the issue with their physicians. Erectile dysfunction is often accompanied by comorbid conditions because of overlapping risk factors. It is important that physicians be aware of the frequency of this coexistence so that they may monitor all potential health concerns and treat patients optimally.
Assuntos
Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus/epidemiologia , Disfunção Erétil/epidemiologia , Disfunção Erétil/terapia , Adulto , Distribuição por Idade , Idoso , Doenças Cardiovasculares/diagnóstico , Comorbidade , Diabetes Mellitus/diagnóstico , Disfunção Erétil/diagnóstico , Seguimentos , Humanos , Libido/fisiologia , Masculino , Pessoa de Meia-Idade , Medicina Osteopática/métodos , Prevalência , Fatores de RiscoRESUMO
Although female sexual dysfunction is a problem with low priority, it can have a profound impact on quality of life. In women, the cycle of sexual response begins in the brain, where a memory, an image, a scent, music, or a fantasy acts as a trigger to prompt sexual arousal. Thus, the brain is really the key and starting place for treatment of sexual dysfunction. Decreased libido, altered arousal, inability to achieve orgasm, and dyspareunia are the four broad types of sexual dysfunction in women. Decreased libido, thought to be related to androgenic hormones, results in delayed or altered arousal, decreased vaginal lubrication and dilation, delayed or absent orgasm, and pain or dyspareunia, which can lead to an aversion to sexual experiences.
Assuntos
Qualidade de Vida , Disfunções Sexuais Fisiológicas/epidemiologia , Disfunções Sexuais Fisiológicas/terapia , Adulto , Distribuição por Idade , Terapia de Reposição Hormonal/métodos , Humanos , Incidência , Libido/efeitos dos fármacos , Libido/fisiologia , Pessoa de Meia-Idade , Satisfação do Paciente , Extratos Vegetais/uso terapêutico , Psicoterapia/métodos , Fatores de Risco , Disfunções Sexuais Fisiológicas/diagnóstico , Resultado do TratamentoRESUMO
The aim of the present study was to determine the effects of dietary supplements of vitamins on vitamin status, libido, and semen characteristics in young boars under normal and intensive semen collection. Sixty Landrace, Yorkshire, and Duroc boars were allocated randomly from 6 to 10 mo of age to one of the following diets: 1) basal diet (industry level) for minerals and vitamins (Control, n = 15); 2) basal diet supplemented with vitamin C (ASC, n = 15); 3) basal diet supplemented with fat-soluble vitamins (FSV, n = 15); and 4) basal diet supplemented with water-soluble vitamins (WSV, n = 15). After puberty (approximately 12 mo of age), semen was collected at a regular frequency (three times every 2 wk) for 5 wk. Thereafter, all boars were intensively collected (daily during 2 wk). A recovery period (semen collection three times every 2 wk) followed and lasted for 10 wk. Sperm quality (percentage of motile cells and percentage of morphologically normal cells) and quantity (sperm concentration, semen volume, and total sperm number) were recorded as well as direct and hormone related measurements of boar libido. Blood and seminal plasma samples were taken to monitor vitamin status. High concentrations of B6 (P < 0.05) and folic acid (P < 0.05) were observed in the blood plasma of WSV boars, whereas greater concentrations of vitamin E (P < 0.01) were obtained in FSV boars. In the seminal plasma, folic acid concentrations tended to be greater in WSV boars (P < 0.08). During the intensive collection period, there was a tendency (P < 0.06) for semen production to be greater in WSV boars, the effect being less pronounced (P < 0.10) in FSV boars. During the recovery period, the percentage of motile sperm cells was greater in WSV boars (P < 0.03) and, to a lesser extent, in FSV boars (P < 0.10) compared with Control boars. Sperm morphology and libido were not affected by treatments. These results indicate that the transfer of vitamins from blood to seminal plasma is limited and the dietary supplements of water-soluble and fat-soluble vitamins may increase semen production during intensive semen collection.
Assuntos
Libido/efeitos dos fármacos , Sêmen/efeitos dos fármacos , Suínos/fisiologia , Vitaminas/administração & dosagem , Animais , Suplementos Nutricionais , Ejaculação/efeitos dos fármacos , Ejaculação/fisiologia , Ácido Fólico/análise , Libido/fisiologia , Masculino , Distribuição Aleatória , Sêmen/fisiologia , Contagem de Espermatozoides/veterinária , Motilidade dos Espermatozoides/efeitos dos fármacos , Motilidade dos Espermatozoides/fisiologia , Vitamina B 6/análise , Vitamina E/análise , Vitaminas/sangue , Vitaminas/farmacologiaRESUMO
Recent studies postulate biologic factors as the primary basis for sexual orientation. However, there is no evidence at present to substantiate a biologic theory, just as there is no compelling evidence to support any singular psychosocial explanation. While all behavior must have an ultimate biologic substrate, the appeal of current biologic explanations for sexual orientation may derive more from dissatisfaction with the present status of psychosocial explanations than from a substantiating body of experimental data. Critical review shows the evidence favoring a biologic theory to be lacking. In an alternative model, temperamental and personality traits interact with the familial and social milieu as the individual's sexuality emerges. Because such traits may be heritable or developmentally influenced by hormones, the model predicts an apparent nonzero heritability for homosexuality without requiring that either genes or hormones directly influence sexual orientation per se.
Assuntos
Homossexualidade , Comportamento Sexual/fisiologia , Animais , Dietilestilbestrol/efeitos adversos , Transtornos do Desenvolvimento Sexual/fisiopatologia , Feminino , Genes/fisiologia , Genética Médica , Hormônios Esteroides Gonadais/fisiologia , Homossexualidade/psicologia , Humanos , Hipotálamo/anatomia & histologia , Recém-Nascido , Libido/fisiologia , Masculino , Modelos Biológicos , Modelos Psicológicos , Gravidez , Efeitos Tardios da Exposição Pré-Natal , Diferenciação Sexual/fisiologia , Comportamento Sexual/psicologiaRESUMO
Twenty-six, eugonadal men between the ages of 18 and 27 participated in this investigation of the relationship between sexual arousal, testosterone (T) levels, and the processing of sexual information. At each of the two test sessions, subjects gave a blood sample, listened to an erotic or neutral priming audiotape, and completed a dichotic listening task designed to assess selective attention for sexual stimuli. Subjective levels of sexual arousal to the audiotape and sexual attitudes and sexual experience were assessed by self-report measures. Contrary to our hypothesis, there was no relationship between levels of free T and the strength of the selective attention bias for sexual stimuli. However, men who were more distracted by the sexual material in the task reported higher levels of sexual arousal to erotic imagery than men who were less distracted by the sexual material in the task (P less than 0.01). Moreover, men who were more sexually aroused by the erotic audiotape made significantly less shadowing errors in the erotic prime condition then they did during the neutral prime condition (P less than 0.05). There was a negative association between T and shadowing errors in the erotic prime condition (P less than 0.05). These results suggest that lower thresholds for sexual arousal are associated with a greater bias to attend to sexual information and that T may have effects on cognitive-motivational aspects of sexual behavior by enhancing attention to relevant stimuli.