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1.
J Sex Marital Ther ; 46(1): 18-34, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31216244

RESUMEN

The limited body of research on sexuality in eating disorders supports the occurrence of considerable sexual concerns. The aim of the present study was to examine eating disorder symptoms in relation to sexual function, and sexual pain in particular. Female undergraduate students completed a series of online questionnaires. All domains of sexual function were predicted by aspects of disordered eating, with disordered eating generally being associated with more sexual difficulties. Psychological characteristics common to those with eating pathology were also associated with sexuality variables, such that psychological maladjustment was associated with poorer sexual function. Psychological maladjustment was found to mediate the association between eating disorder risk and sexual function. The results of this study suggest that sexual function should be addressed during eating disorder care.


Asunto(s)
Síntomas Conductuales/etiología , Trastornos de Alimentación y de la Ingestión de Alimentos/psicología , Conducta Sexual/psicología , Disfunciones Sexuales Psicológicas/fisiopatología , Adolescente , Adulto , Trastornos de Alimentación y de la Ingestión de Alimentos/complicaciones , Femenino , Humanos , Estudiantes/psicología , Encuestas y Cuestionarios , Adulto Joven
2.
Arch Sex Behav ; 48(8): 2519-2535, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31520178

RESUMEN

Chinese women in Western nations frequently report less engagement with sexuality, such as lower sexual response and behaviors, and more restrictive sexual attitudes, than their Euro-Caucasian peers. This difference is likely related to sexual conservatism within traditional Chinese culture, though the mechanisms underlying how culture influences sexual responding are not well understood. The current study investigated if these differences were consistent with the dual control model, a well-established model for understanding regulation of sexual response. Chinese and Euro-Caucasian women (N = 471; age M = 20.7 years, SD = 3.3) residing in Canada from a university sample completed self-report questionnaires on sexual excitation and inhibition, sexual attitudes, and various sexual response and behavior measures. Sexual excitation was significantly lower in Chinese than Euro-Caucasian women and was significantly associated with sexual response in both groups. Structural equation modeling showed that sexual response variables were associated with a latent sexual excitation factor and that sexual attitudes partially mediated the relationship between this latent factor and ethnicity. The findings showed that sexual excitation and sexual attitudes contribute to cross-cultural differences in women's sexual responding. Theoretical and clinical considerations are discussed.


Asunto(s)
Comparación Transcultural , Conducta Sexual/etnología , Adulto , Pueblo Asiatico , Canadá , Femenino , Humanos , Encuestas y Cuestionarios , Población Blanca , Adulto Joven
3.
Arch Sex Behav ; 46(1): 311-328, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27882477

RESUMEN

Human asexuality is generally defined as a lack of sexual attraction. We used online questionnaires to investigate reasons for masturbation, and explored and compared the contents of sexual fantasies of asexual individuals (identified using the Asexual Identification Scale) with those of sexual individuals. A total of 351 asexual participants (292 women, 59 men) and 388 sexual participants (221 women, 167 men) participated. Asexual women were significantly less likely to masturbate than sexual women, sexual men, and asexual men. Asexual women were less likely to report masturbating for sexual pleasure or fun than their sexual counterparts, and asexual men were less likely to report masturbating for sexual pleasure than sexual men. Both asexual women and men were significantly more likely than sexual women and men to report that they had never had a sexual fantasy. Of those who have had a sexual fantasy, asexual women and men were significantly more likely to endorse the response "my fantasies do not involve other people" compared to sexual participants, and consistently scored each sexual fantasy on a questionnaire as being less sexually exciting than did sexual participants. When using an open-ended format, asexual participants were more likely to report having fantasies about sexual activities that did not involve themselves, and were less likely to fantasize about topics such as group sex, public sex, and having an affair. Interestingly, there was a large amount of overlap between sexual fantasies of asexual and sexual participants. Notably, both asexual and sexual participants (both men and women) were equally likely to fantasize about topics such as fetishes and BDSM.


Asunto(s)
Fantasía , Masturbación/psicología , Conducta Sexual/psicología , Conducta Sexual/estadística & datos numéricos , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
4.
J Sex Marital Ther ; 42(5): 413-30, 2016 Jul 03.
Artículo en Inglés | MEDLINE | ID: mdl-26148210

RESUMEN

Prior research has documented various ways in which adult attachment styles are characteristic of differential behavioral and cognitive patterns within romantic relationships and sexuality. However, few studies have examined the direct influence of anxious or avoidant attachment orientation on sexual function. The aim of the present study was to assess the impact of insecure attachment on sexual function. Undergraduate students completed questionnaires measuring attachment style and sexual functioning. Among women, attachment avoidance tended to be associated with impairments in all aspects of sexual function, whereas anxious attachment tended to be associated with declines in arousal, satisfaction, and ability to achieve orgasm. A different trend was seen in men: Anxious attachment tended to be associated with multiple facets of sexual dysfunction, while avoidant attachment did not correlate with any sexual function deficits and was associated with superior physiological competence. These results suggest that both anxious and avoidant attachment styles are important yet differential predictors of sexual function in men and women.


Asunto(s)
Ansiedad/psicología , Apego a Objetos , Satisfacción Personal , Autoeficacia , Conducta Sexual/psicología , Asertividad , Femenino , Humanos , Masculino , Factores Sexuales , Deseabilidad Social , Estudiantes/estadística & datos numéricos , Encuestas y Cuestionarios , Adulto Joven
5.
J Sex Med ; 12(3): 646-60, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25545124

RESUMEN

INTRODUCTION: Human asexuality is defined as a lack of sexual attraction to anyone or anything. Various theories have been proposed to explain how asexuality should best be classified, and some have maintained that asexuality is an extreme variant of hypoactive sexual desire disorder (HSDD)-a sexual dysfunction characterized by a lack of interest in sex and significant distress. To date, this has never been empirically examined. AIM AND METHOD: Using measures of sexual desire and behavior, sex-related distress, personality, and psychopathology, the aim of the current study was to compare individuals scoring above the cutoff for asexuality identification (AIS >40) (n = 192) to sexual individuals (n = 231). The sexual group was further divided into a control group (n = 122), a HSDD group (n = 50), and a group with symptoms of low desire that were nondistressing (n = 59). RESULTS: Analyses were controlled for age. Individuals in the AIS >40 group had a greater likelihood of never previously engaging in sexual intercourse, fantasies, or kissing and petting than all other groups and a lower likelihood of experiencing sex-related distress than those with HSDD. For women, those in the HSDD and AIS >40 groups had significantly lower desire than the subclinical HSDD and control groups. Men in the AIS >40 group had significantly lower desire than the other three groups. Symptoms of depression were highest among those with subclinical HSDD and HSDD, whereas there were no group differences on alexithymia or desirable responding. A binary logistic regression indicated that relationship status (long-term dating/married), sexual desire, sex-related distress, and lower alexithymia scores were the best predictors of group membership (HSDD vs. AIS >40). CONCLUSION: Taken together, these results challenge the speculation that asexuality should be classified as a sexual dysfunction of low desire.


Asunto(s)
Conducta Sexual/estadística & datos numéricos , Disfunciones Sexuales Psicológicas/clasificación , Disfunciones Sexuales Psicológicas/diagnóstico , Adulto , Coito , Depresión/psicología , Femenino , Humanos , Libido , Masculino , Persona de Mediana Edad , Motivación , Personalidad , Estrés Psicológico/psicología , Encuestas y Cuestionarios
6.
J Sex Marital Ther ; 41(6): 593-609, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25222339

RESUMEN

This review investigates whether sexual desire and arousal decline in response to partner familiarity, increase in response to partner novelty, and show differential responding in men and women. These questions were considered through the perspective of two leading evolutionary theories regarding human mating strategies: sexual strategies theory and attachment fertility theory. The hypotheses emerging from these theories were evaluated through a critical analysis of several areas of research including habituation of arousal to erotic stimuli, preferences regarding number of sexual partners, the effect of long-term monogamous relationships on sexual arousal and desire, and prevalence and risk factors associated with extradyadic behavior. The current literature best supports the predictions made by sexual strategies theory in that sexual functioning has evolved to promote short-term mating. Sexual arousal and desire appear to decrease in response to partner familiarity and increase in response to partner novelty in men and women. Evidence to date suggests this effect may be greater in men.


Asunto(s)
Coito/psicología , Heterosexualidad/psicología , Libido , Parejas Sexuales/psicología , Conducta de Elección , Cortejo/psicología , Femenino , Humanos , Relaciones Interpersonales , Masculino
7.
Hippocampus ; 24(3): 280-92, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24132958

RESUMEN

Cannabinoid exposure during adolescence has adverse effects on neuroplasticity, emotional behavior, cognition, and reward sensitivity in adult rats. We investigated whether escalating doses of the cannabinoid receptor 1 (CB1 R) agonist, HU-210, in adolescence would affect adult hippocampal neurogenesis and behavioral processes putatively modulated by hippocampal neurogenesis, in adult male and female Sprague-Dawley rats. Escalating doses of HU-210 (25, 50, and 100 µg/kg), or vehicle were administered from postnatal day (PND) 35 to 46. Animals were left undisturbed until PND 70, when they were treated with 5-bromo-2-deoxyuridine (BrdU; 200 mg/kg) and perfused 21 days later to examine density of BrdU-ir and BrdU/NeuN cells in the dentate gyrus. In another cohort, hypothalamic-pituitary-adrenal (HPA) axis reactivity to an acute restraint stress (30 min; PND 75) and behavioral sensitization to d-amphetamine sulfate (1-2 mg/kg; PND 105-134) were assessed in adulthood. Adolescent HU-210 administration suppressed the density of BrdU-ir cells in the dentate gyrus in adult male, but not adult female rats. Adolescent HU-210 administration also induced significantly higher peak corticosterone levels and reminiscent of the changes in neurogenesis, this effect was more pronounced in adult males than females. However, adolescent cannabinoid treatment resulted in significantly higher stereotypy scores in adult female, but not male, rats. Thus, adolescent CB1 R activation suppressed hippocampal neurogenesis and increased stress responsivity in adult males, but not females, and enhanced amphetamine sensitization in adult female, but not male, rats. Taken together, increased CB1 R activation during adolescence results in sex-dependent, long-term, changes to hippocampal structure and function, an effect that may shed light on differing vulnerabilities to developing disorders following adolescent cannabinoid exposure, based on sex.


Asunto(s)
Agonistas de Receptores de Cannabinoides/farmacología , Giro Dentado/efectos de los fármacos , Dextroanfetamina/farmacología , Dronabinol/análogos & derivados , Neurogénesis/fisiología , Receptor Cannabinoide CB1/efectos de los fármacos , Caracteres Sexuales , Maduración Sexual/fisiología , Conducta Estereotipada/efectos de los fármacos , Estrés Fisiológico/fisiología , Estrés Psicológico/fisiopatología , Animales , Agonistas de Receptores de Cannabinoides/administración & dosificación , Corticosterona/sangre , Replicación del ADN/efectos de los fármacos , Giro Dentado/crecimiento & desarrollo , Giro Dentado/fisiología , Relación Dosis-Respuesta a Droga , Dronabinol/administración & dosificación , Dronabinol/farmacología , Estro , Femenino , Sistema Hipotálamo-Hipofisario/fisiopatología , Inyecciones Intraperitoneales , Masculino , Sistema Hipófiso-Suprarrenal/fisiopatología , Ratas , Ratas Sprague-Dawley , Receptor Cannabinoide CB1/fisiología , Restricción Física/efectos adversos , Maduración Sexual/efectos de los fármacos , Método Simple Ciego , Conducta Estereotipada/fisiología
8.
Arch Sex Behav ; 43(2): 299-310, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24045903

RESUMEN

Human asexuality is defined as a lack of sexual attraction to anyone or anything and it has been suggested that it may be best conceptualized as a sexual orientation. Non-right-handedness, fraternal birth order, and finger length ratio (2D:4D) are early neurodevelopmental markers associated with sexual orientation. We conducted an Internet study investigating the relationship between self-identification as asexual, handedness, number of older siblings, and self-measured finger-lengths in comparison to individuals of other sexual orientation groups. A total of 325 asexuals (60 men and 265 women; M age, 24.8 years), 690 heterosexuals (190 men and 500 women; M age, 23.5 years), and 268 non-heterosexuals (homosexual and bisexual; 64 men and 204 women; M age, 29.0 years) completed online questionnaires. Asexual men and women were 2.4 and 2.5 times, respectively, more likely to be non-right-handed than their heterosexual counterparts and there were significant differences between sexual orientation groups in number of older brothers and older sisters, and this depended on handedness. Asexual and non-heterosexual men were more likely to be later-born than heterosexual men, and asexual women were more likely to be earlier-born than non-heterosexual women. We found no significant differences between sexual orientation groups on measurements of 2D:4D ratio. This is one of the first studies to test and provide preliminary empirical support for an underlying neurodevelopmental basis to account for the lack of sexual attraction characteristic of asexuality.


Asunto(s)
Orden de Nacimiento , Dedos/anatomía & histología , Lateralidad Funcional , Heterosexualidad/estadística & datos numéricos , Hermanos , Adulto , Anciano , Análisis de Varianza , Biomarcadores/análisis , Bisexualidad , Femenino , Homosexualidad , Humanos , Internet , Masculino , Persona de Mediana Edad , Desarrollo Psicosexual , Conducta Sexual , Factores Socioeconómicos , Encuestas y Cuestionarios , Adulto Joven
9.
Synapse ; 67(1): 4-10, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22987804

RESUMEN

Fatty acid amide hydrolase (FAAH) regulates tissue concentrations of N-acylethanolamines (NAEs), including the endocannabinoid, N-arachidonylethanolamide (anandamide, AEA). FAAH activity and NAEs are widely distributed throughout the brain and FAAH activity regulates an array of processes including emotion, cognition, inflammation, and feeding. However, there is relatively little research describing how this system develops throughout adolescence, particularly within limbic circuits regulating stress and reward processing. Thus, this study characterized temporal changes in NAE content (AEA, oleoylethanolamine [OEA], and palmitoylethanolamide [PEA]) and FAAH activity across the peri-adolescent period, in four corticolimbic structures (amygdala, hippocampus, prefrontal cortex, and hypothalamus). Brain tissue of male Sprague-Dawley rats was collected on postnatal days (PND) 25, 35, 45, and 70, representing pre-adolescence, early- to mid-adolescence, late adolescence, and adulthood, respectively. Tissue was analyzed for AEA, OEA, and PEA content as well as FAAH activity at each time point. AEA, OEA, and PEA exhibited a similar temporal pattern in all four brain regions. NAE concentrations were lowest at PND 25 and highest at PND 35. NAE concentrations decreased between PNDs 35 and 45 and increased between PNDs 45 and 70. FAAH activity mirrored the pattern of NAE content in which it decreased between PNDs 25 and 35, increased between PNDs 35 and 45, and decreased between PNDs 45 and 70. These age-dependent patterns of NAE content and FAAH activity demonstrate temporal specificity to the development of this system and could contribute to alterations in stress sensitivity, emotionality, and executive function which also fluctuate during this developmental period.


Asunto(s)
Etanolaminas/metabolismo , Sistema Límbico/metabolismo , Factores de Edad , Amidohidrolasas/metabolismo , Animales , Ácidos Araquidónicos/metabolismo , Endocannabinoides/metabolismo , Sistema Límbico/crecimiento & desarrollo , Masculino , Alcamidas Poliinsaturadas/metabolismo , Ratas , Ratas Sprague-Dawley
10.
Arch Sex Behav ; 42(8): 1615-25, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24057209

RESUMEN

The purpose of this study was to investigate the sexual beliefs of female undergraduates, as well as the thoughts they experience during sexual experiences. The study aimed to determine potential differences in these variables between East Asian-Canadians and Euro-Canadians, as well as the influence of acculturation on these variables. In addition, the relationships between sexual beliefs, automatic thoughts, and specific aspects of sexual functioning were examined. Euro-Canadian (n = 77) and East Asian-Canadian (n = 123) undergraduate women completed the Sexual Dysfunctional Beliefs Questionnaire, the Sexual Modes Questionnaire, the Female Sexual Function Index, and the Vancouver Index of Acculturation. East Asian women endorsed almost all sexual beliefs assessed in this study more than did Euro-Canadian women, and endorsement of these beliefs was associated with acculturation. In addition, East Asian-Canadian and Euro-Canadian women differed in the frequency of experiencing negative automatic thoughts. Results also revealed associations between difficulties in sexual functioning, and both sexual beliefs and automatic thoughts. Together, these results provide preliminary support for the hypothesis that differences in cognitive aspects of sexuality may underlie the differences in sexual functioning previously observed between these two groups.


Asunto(s)
Aculturación , Pueblo Asiatico/psicología , Cognición , Conducta Sexual/etnología , Estudiantes/psicología , Población Blanca/psicología , Adulto , Canadá , Comparación Transcultural , Cultura , Femenino , Heterosexualidad/etnología , Heterosexualidad/psicología , Humanos , Análisis de Regresión , Conducta Sexual/psicología , Encuestas y Cuestionarios
11.
Proc Natl Acad Sci U S A ; 107(20): 9406-11, 2010 May 18.
Artículo en Inglés | MEDLINE | ID: mdl-20439721

RESUMEN

Secretion of glucocorticoid hormones during stress produces an array of physiological changes that are adaptive and beneficial in the short term. In the face of repeated stress exposure, however, habituation of the glucocorticoid response is essential as prolonged glucocorticoid secretion can produce deleterious effects on metabolic, immune, cardiovascular, and neurobiological function. Endocannabinoid signaling responds to and regulates the activity of the hypothalamic-pituitary-adrenal (HPA) axis that governs the secretion of glucocorticoids; however, the role this system plays in adaptation of the neuroendocrine response to repeated stress is not well characterized. Herein, we demonstrate a divergent regulation of the two endocannabinoid ligands, N-arachidonylethanolamine (anandamide; AEA) and 2-arachidonoylglycerol (2-AG), following repeated stress such that AEA content is persistently decreased throughout the corticolimbic stress circuit, whereas 2-AG is exclusively elevated within the amygdala in a stress-dependent manner. Pharmacological studies demonstrate that this divergent regulation of AEA and 2-AG contribute to distinct forms of HPA axis habituation. Inhibition of AEA hydrolysis prevented the development of basal hypersecretion of corticosterone following repeated stress. In contrast, systemic or intra-amygdalar administration of a CB(1) receptor antagonist before the final stress exposure prevented the repeated stress-induced decline in corticosterone responses. The present findings demonstrate an important role for endocannabinoid signaling in the process of stress HPA habituation, and suggest that AEA and 2-AG modulate different components of the adrenocortical response to repeated stressor exposure.


Asunto(s)
Adaptación Fisiológica/fisiología , Moduladores de Receptores de Cannabinoides/metabolismo , Transducción de Señal/fisiología , Estrés Fisiológico/fisiología , Adaptación Fisiológica/efectos de los fármacos , Análisis de Varianza , Animales , Ácidos Araquidónicos/antagonistas & inhibidores , Ácidos Araquidónicos/farmacología , Benzamidas/farmacología , Carbamatos/farmacología , Corticosterona/sangre , Endocannabinoides , Masculino , Piperidinas/farmacología , Alcamidas Poliinsaturadas/antagonistas & inhibidores , Pirazoles/farmacología , Ratas , Ratas Sprague-Dawley , Receptor Cannabinoide CB1/antagonistas & inhibidores , Transducción de Señal/efectos de los fármacos
12.
J Neurosci ; 31(29): 10506-15, 2011 Jul 20.
Artículo en Inglés | MEDLINE | ID: mdl-21775596

RESUMEN

The mechanisms subserving the ability of glucocorticoid signaling within the medial prefrontal cortex (mPFC) to terminate stress-induced activation of the hypothalamic-pituitary-adrenal (HPA) axis are not well understood. We report that antagonism of the cannabinoid CB(1) receptor locally within the mPFC prolonged corticosterone secretion following cessation of stress in rats. Mice lacking the CB(1) receptor exhibited a similar prolonged response to stress. Exposure of rats to stress produced an elevation in the endocannabinoid 2-arachidonoylglycerol within the mPFC that was reversed by pretreatment with the glucocorticoid receptor antagonist RU-486 (20 mg/kg). Electron microscopic and electrophysiological data demonstrated the presence of CB(1) receptors in inhibitory-type terminals impinging upon principal neurons within layer V of the prelimbic region of the mPFC. Bath application of corticosterone (100 nm) to prefrontal cortical slices suppressed GABA release onto principal neurons in layer V of the prelimbic region, when examined 1 h later, which was prevented by application of a CB(1) receptor antagonist. Collectively, these data demonstrate that the ability of stress-induced glucocorticoid signaling within mPFC to terminate HPA axis activity is mediated by a local recruitment of endocannabinoid signaling. Endocannabinoid activation of CB(1) receptors decreases GABA release within the mPFC, likely increasing the outflow of the principal neurons of the prelimbic region to contribute to termination of the stress response. These data support a model in which endocannabinoid signaling links glucocorticoid receptor engagement to activation of corticolimbic relays that inhibit corticosterone secretion.


Asunto(s)
Ácidos Araquidónicos/metabolismo , Glicéridos/metabolismo , Transducción de Señal/fisiología , Estrés Psicológico/metabolismo , Estrés Psicológico/patología , Animales , Proteína Quinasa Tipo 2 Dependiente de Calcio Calmodulina/metabolismo , Corticosterona/farmacología , Modelos Animales de Enfermedad , Estimulación Eléctrica/métodos , Endocannabinoides , Reacción Cataléptica de Congelación/efectos de los fármacos , Reacción Cataléptica de Congelación/fisiología , Antagonistas de Hormonas/farmacología , Técnicas In Vitro , Depresión Sináptica a Largo Plazo/efectos de los fármacos , Depresión Sináptica a Largo Plazo/genética , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Endogámicos ICR , Ratones Noqueados , Microscopía Electrónica de Transmisión , Mifepristona/farmacología , Técnicas de Placa-Clamp/métodos , Piperidinas/farmacología , Corteza Prefrontal/citología , Corteza Prefrontal/efectos de los fármacos , Corteza Prefrontal/metabolismo , Células Piramidales/efectos de los fármacos , Células Piramidales/fisiología , Pirazoles/farmacología , Ratas , Ratas Sprague-Dawley , Receptor Cannabinoide CB1/antagonistas & inhibidores , Receptor Cannabinoide CB1/deficiencia , Transducción de Señal/efectos de los fármacos , Estrés Psicológico/tratamiento farmacológico , Ácido gamma-Aminobutírico/metabolismo
13.
J Sex Med ; 9(6): 1588-601, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22462722

RESUMEN

INTRODUCTION: Several lines of evidence point to the potential role of the endocannabinoid system in female sexual functioning. These include results from studies describing the subjective effects of exogenous cannabinoids on sexual functioning in humans and the observable effects of exogenous cannabinoids on sexual functioning in other species, as well as results from studies investigating the location of cannabinoid receptors in the brain and periphery, and the effects of cannabinoid receptor activation on neurotransmitters implicated in sexual functioning. While these lines of research suggest a role for the endocannabinoid system in female sexual functioning, no studies investigating the relationship between concentrations of endogenous cannabinoids (i.e., arachidonoylethanolamide [AEA] and 2-arachidonoylglycerol [2-AG]) and sexual functioning have been conducted in any species. AIM: To measure circulating endocannabinoid concentrations in relation to subjective and physiological indices of sexual arousal in women (N = 21). METHODS: Serum endocannabinoid (AEA and 2-AG) concentrations were measured immediately prior to, and immediately following, viewing of neutral (control) and erotic (experimental) film stimuli in a repeated measures design. Physiological sexual arousal was measured via vaginal photoplethysmography. Subjective sexual arousal was measured both continuously and noncontinuously. Pearson's correlations were used to investigate the relationships between endocannabinoid concentrations and sexual arousal. MAIN OUTCOME MEASURES: Changes in AEA and 2-AG concentrations from pre- to post-film and in relation to physiological and subjective indices of sexual arousal. RESULTS: Results revealed a significant relationship between endocannabinoid concentrations and female sexual arousal, whereby increases in both physiological and subjective indices of sexual arousal were significantly associated with decreases in AEA, and increases in subjective indices of sexual arousal were significantly associated with decreases in 2-AG. CONCLUSIONS: These findings support the hypothesis that the endocannabinoid system is involved in female sexual functioning, with implications for furthering understanding of the biological mechanisms underlying female sexual functioning.


Asunto(s)
Nivel de Alerta/fisiología , Moduladores de Receptores de Cannabinoides/sangre , Endocannabinoides , Sexualidad/fisiología , Adulto , Estudios de Casos y Controles , Femenino , Humanos , Análisis Multivariante , Fotopletismografía , Vagina/fisiología
14.
Arch Sex Behav ; 41(6): 1485-95, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22441769

RESUMEN

Research has examined the relationship between religiosity and sexuality but few studies have explored the mechanisms by which sexual variables are influenced by religiosity. The purpose of the present study was to investigate the role of sex guilt in the relationship between religiosity and sexual desire in women. Euro-Canadian (n = 178) and East Asian (n = 361) female university students completed a battery of questionnaires. Higher levels of religious fundamentalism, intrinsic religiosity and spirituality were associated with higher levels of sex guilt in both ethnic groups. Paranormal belief was not associated with sex guilt in either ethnic group. The Euro-Canadian women reported significantly higher levels of sexual desire and significantly less sex guilt than the East Asian women. Among the Euro-Canadian women, sex guilt mediated the relationships between spirituality and sexual desire, and fundamentalism and sexual desire; among the East Asian women, sex guilt mediated the relationships between spirituality and sexual desire, fundamentalism and sexual desire, and intrinsic religiosity and sexual desire. These findings suggest that sex guilt may be one mechanism by which religiosity affects sexual desire among women.


Asunto(s)
Pueblo Asiatico/psicología , Culpa , Libido , Religión , Conducta Sexual/etnología , Mujeres/psicología , Adolescente , Canadá , Asia Oriental/etnología , Femenino , Humanos , Estudiantes , Encuestas y Cuestionarios , Población Blanca , Adulto Joven
15.
Lipids Health Dis ; 11: 32, 2012 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-22373123

RESUMEN

BACKGROUND: Depression is known to be a risk factor for cardiovascular diseases but the underlying mechanisms remain unclear. Since recent preclinical evidence suggests that endogenous agonists of cannabinoid receptors (endocannabinoids) are involved in both cardiovascular function and depression, we asked whether endocannabinoids correlated with either in humans. RESULTS: Resting blood pressure and serum content of endocannabinoids in ambulatory, medication-free, female volunteers with depression (n = 28) and their age- and ethnicity-matched controls (n = 27) were measured. In females with depression, both diastolic and mean arterial blood pressures were positively correlated with serum contents of the endocannabinoids, N-arachidonylethanolamine (anandamide) and 2-arachidonoylglycerol. There was no correlation between blood pressure and endocannabinoids in control subjects. Furthermore, depressed women had significantly higher systolic blood pressure than control subjects. A larger body mass index was also found in depressed women, however, it was not significantly correlated with serum endocannabinoid contents. CONCLUSIONS: This preliminary study raises the possibility that endocannabinoids play a role in blood pressure regulation in depressives with higher blood pressure, and suggests an interrelationship among endocannabinoids, depression and cardiovascular risk factors in women.


Asunto(s)
Presión Sanguínea , Moduladores de Receptores de Cannabinoides/sangre , Depresión/sangre , Endocannabinoides , Adulto , Biomarcadores/sangre , Estudios de Casos y Controles , Femenino , Humanos
16.
Arch Sex Behav ; 40(2): 385-94, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-20349208

RESUMEN

A large body of literature demonstrates that East Asian women report lower sexual desire than Caucasian women. Although most studies have explained these differences by referring to general culture-linked differences in sexual conservatism, none have examined the potential role of specific constructs such as sex guilt. The goals of the current study were to examine the supposition that sexual conservatism mediates the relationship between culture and sexual desire, and to explore the potential mediating role of sex guilt in the link between culture and sexual desire. Caucasian (n = 105) and East Asian (n = 137) female university students completed questionnaires online. Caucasian women reported significantly higher levels of sexual desire, significantly lower levels of sexual conservatism, and significantly less sex guilt. In the entire sample, sexual conservatism and sex guilt separately mediated the relationship between ethnicity and sexual desire such that women with more sex guilt and those who were more sexually conservative reported lower sexual desire. Among the East Asian women, sex guilt, but not sexual conservatism, mediated the relationship between mainstream acculturation (degree of westernization) and sexual desire such that women with more sex guilt reported lower sexual desire. These findings suggest that sex guilt may be one mechanism by which ethnic groups differ in sexual desire.


Asunto(s)
Culpa , Libido , Conducta Sexual/etnología , Mujeres/psicología , Aculturación , Adulto , Pueblo Asiatico/psicología , Comparación Transcultural , Cultura , Femenino , Humanos , Conducta Sexual/psicología , Estudiantes , Encuestas y Cuestionarios , Población Blanca/psicología
17.
Hippocampus ; 20(4): 513-23, 2010 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19489006

RESUMEN

Voluntary exercise and endogenous cannabinoid activity have independently been shown to regulate hippocampal plasticity. The aim of the current study was to determine whether the endocannabinoid system is regulated by voluntary exercise and if these changes contribute to exercise-induced enhancement of cell proliferation. In Experiment 1, 8 days of free access to a running wheel increased the agonist binding site density of the cannabinoid CB(1) receptor; CB(1) receptor-mediated GTPgammaS binding; and the tissue content of the endocannabinoid anandamide in the hippocampus but not in the prefrontal cortex. In Experiment 2, the CB(1) receptor antagonist AM251 (1 mg kg(-1)) was administered daily to animals given free access to a running wheel for 8 days, after which cell proliferation in the hippocampus was examined through immunohistochemical analysis of the cell cycle protein Ki-67. Voluntary exercise increased proliferation of progenitor cells, as evidenced by the increase in the number of Ki-67 positive cells in the granule cell layer of the dentate gyrus (DG) in the hippocampus. However, this effect was abrogated by concurrent treatment with AM251, indicating that the increase in endocannabinoid signaling in the hippocampus is required for the exercise-induced increase in cell proliferation. These data demonstrate that the endocannabinoid system in the hippocampus is sensitive to environmental change and suggest that it is a mediator of experience-induced plasticity.


Asunto(s)
Moduladores de Receptores de Cannabinoides/metabolismo , Proliferación Celular , Hipocampo/metabolismo , Condicionamiento Físico Animal/fisiología , Receptor Cannabinoide CB1/metabolismo , Análisis de Varianza , Animales , Recuento de Células , Ciclo Celular/fisiología , Inmunohistoquímica , Neurogénesis , Neuronas/metabolismo , Corteza Prefrontal/metabolismo , Ensayo de Unión Radioligante , Ratas , Ratas Sprague-Dawley , Transducción de Señal , Células Madre
18.
Horm Behav ; 58(1): 91-9, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19733173

RESUMEN

The putative role of the endocannabinoid system and the effects of cannabis use in male and female sexual functioning are summarized. The influence of cannabis intake on sexual behavior and arousability appear to be dose-dependent in both men and women, although women are far more consistent in reporting facilitatory effects. Furthermore, evidence from nonhuman species indicate somewhat more beneficial than debilitating effects of cannabinoids on female sexual proceptivity and receptivity while suggesting predominantly detrimental effects on male sexual motivation and erectile functioning. Data from human and nonhuman species converge on the ephemeral nature of THC-induced testosterone decline. However, it is clear that cannabinoid-induced inhibition of male sexual behavior is independent of concurrent declines in testosterone levels. Investigations also reveal a suppression of gonadotropin release by cannabinoids across various species. Historical milestones and promising future directions in the area of cannabinoid and sexuality research are also outlined in this review.


Asunto(s)
Cannabinoides/farmacología , Fármacos del Sistema Nervioso Central/farmacología , Hormonas Gonadales/metabolismo , Caracteres Sexuales , Conducta Sexual/efectos de los fármacos , Conducta Sexual/fisiología , Animales , Femenino , Humanos , Masculino , Conducta Sexual Animal/efectos de los fármacos , Conducta Sexual Animal/fisiología
19.
Arch Sex Behav ; 39(5): 1029-43, 2010 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-20143148

RESUMEN

The literature on dysregulated sexuality, whether theoretical, clinical or empirical, has failed to differentiate the construct from high sexual desire. In this study, we tested three hypotheses which addressed this issue. A sample of 6458 men and 7938 women, some of whom had sought treatment for sexual compulsivity, addiction or impulsivity, completed an online survey comprised of various sexuality measures. Men and women who reported having sought treatment scored significantly higher on measures of dysregulated sexuality and sexual desire. For men, women, and those who had sought treatment, dysregulated sexuality was associated with increased sexual desire. Confirmatory factor analysis supported a one-factor model, indicating that, in both male and female participants, dysregulated sexuality and sexual desire variables loaded onto a single underlying factor. The results of this study suggest that dysregulated sexuality, as currently conceptualized, labelled, and measured, may simply be a marker of high sexual desire and the distress associated with managing a high degree of sexual thoughts, feelings, and needs.


Asunto(s)
Conducta Adictiva/psicología , Conducta Compulsiva/psicología , Conducta Sexual/estadística & datos numéricos , Sexualidad/estadística & datos numéricos , Adulto , Análisis Factorial , Femenino , Humanos , Libido , Masculino , Conducta Sexual/psicología , Sexualidad/psicología , Encuestas y Cuestionarios
20.
J Obstet Gynaecol Can ; 32(3): 254-62, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20500970

RESUMEN

OBJECTIVE: Papanicolaou (Pap) testing rates among Chinese women remain low compared with their Caucasian counterparts despite extensive efforts to raise awareness of the importance of regular screening. We examined three potential predictors of Pap testing behaviour in Chinese women: acculturation, cervical cancer screening belief accuracy, and intergenerational transmission. METHODS: Caucasian (n = 78) and Chinese (n = 93) female university students and their mothers completed questionnaires concerning acculturation, Pap testing beliefs, and behaviours. RESULTS: Ethnic group comparisons revealed that Chinese daughters and mothers had lower Pap testing rates and less accurate beliefs regarding cervical cancer screening. Among women who had had at least one Pap test, there was no ethnic difference in the proportion of women who adhered to the recommended screening frequency. Among the Chinese women, lower heritage acculturation was correlated with higher cancer screening belief accuracy in both the daughters and their mothers. Maternal Pap testing behaviour was predicted by level of cancer screening belief accuracy, whereas daughters' Pap testing behaviour was predicted by previous experience of sexual intercourse and heritage acculturation. No intergenerational transmission of Pap testing beliefs or behaviours was found. CONCLUSION: The accuracy of cancer screening beliefs, level of acculturation and experience of sexual intercourse may be predictors of Pap testing behaviour in Chinese women. Contrary to our prediction, we found no support for intergenerational transmission, suggesting that Pap testing beliefs and behaviours of Chinese women are independent of the beliefs and behaviours of their mothers.


Asunto(s)
Pueblo Asiatico , Actitud Frente a la Salud/etnología , Núcleo Familiar , Prueba de Papanicolaou , Neoplasias del Cuello Uterino/prevención & control , Frotis Vaginal , Población Blanca , Aculturación , Adulto , Canadá , China/etnología , Femenino , Conductas Relacionadas con la Salud/etnología , Humanos , Persona de Mediana Edad , Conducta Sexual , Encuestas y Cuestionarios
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