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Sexuality, Sex and Aging

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https://www.readbyqxmd.com/read/28938422/prepubertal-development-of-gonadotropin-releasing-hormone-gnrh-neuron-activity-is-altered-by-sex-age-and-prenatal-androgen-exposure
#1
Eden A Dulka, Suzanne M Moenter
Gonadotropin-releasing hormone (GnRH) neurons regulate reproduction though pulsatile hormone release. Disruption of GnRH release as measured via LH pulses occurs in polycystic ovary syndrome (PCOS), and in young hyperandrogenemic girls. In adult prenatally androgenized (PNA) mice, which exhibit many aspects of PCOS, increased LH is associated with increased GnRH neuron action potential firing. How GnRH neuron activity develops over the prepubertal period and whether or not this is altered by sex or prenatal androgen treatment are unknown...
September 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938228/sex-determination-from-chest-measurements-in-a-sample-of-egyptian-adults-using-multislice-computed-tomography
#2
Ragaa T Darwish, Manal H Abdel-Aziz, Abdel-Aziz M El Nekiedy, Zahraa K Sobh
BACKGROUND: In forensic sciences to determine one's sex is quite important during the identity defining stage. The reliability of sex determination depends on the completeness of the remains and the degree of sexual dimorphism inherent in the population. Computed Tomography is the imaging modality of choice for two- and three-dimensional documentation and analysis of many autopsy findings. OBJECTIVE: The aim of the present work was to assess the reliability of Three-dimensional Multislice Computed Tomography (3D MSCT) to determine sexual dimorphism from certain chest measurements; sternum and fourth rib using the 3D MSCT and to develop equations for sex determination from these bones among adult Egyptians sample...
September 11, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28937851/hpv-vaccine-acceptability-in-high-risk-greek-men
#3
Lea Hoefer, Savas Tsikis, George Bethimoutis, Electra Nicolaidou, Vassilios Paparizos, Christina Antoniou, Antonios Kanelleas, Leonidas Chardalias, Georgios-Emmanouil Stavropoulos, John Schneider, Angella Charnot-Katsikas
BACKGROUND: HPV is associated with malignancy in men, yet there is a lack of data on HPV knowledge, vaccine acceptability, and factors affecting vaccine acceptability in Greek men. This study aims to identify determinants of knowledge and willingness to vaccinate against HPV among high-risk Greek men. METHODS: Men (n = 298) between the ages of 18 and 55 were enrolled from the STI and HIV clinics at "Andreas Syggros" Hospital in Athens, Greece from July-October 2015...
September 22, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28934330/an-analysis-of-beak-shape-variation-in-two-ages-of-domestic-turkeys-meleagris-gallopavo-using-landmark-based-geometric-morphometrics
#4
Hillary A Dalton, Benjamin J Wood, Tina M Widowski, Michele T Guerin, Stephanie Torrey
The objective of this study was to assess beak shape variation in domestic turkeys (Meleagris gallopavo) and determine the effects of age, sex, and beak size on beak shape variation using geometric morphometrics. Dorsal and right lateral images were taken of 2442 turkeys at 6 and 18.5 weeks of age. Landmarks were digitized in tpsDig in three analyses of the dorsal upper mandible, lateral upper mandible, and lateral lower mandible shape of each turkey at both ages. The coordinate data were then subjected to a principal components analysis (PCA), multivariate regression, and a canonical variates analysis (CVA) with a Procrustes ANOVA in MorphoJ...
2017: PloS One
https://www.readbyqxmd.com/read/28933951/a-developmentally-relevant-approach-to-classifying-nonconsensual-sexual-experiences-in-the-study-of-women-s-sexual-well-being
#5
Chelsea D Kilimnik, Cindy M Meston
In this article we propose a sexual developmental approach to classifying the onset of nonconsensual sexual experiences (NSEs) that differs from the traditional age cutoff approach. Online measures of sexual self-schemas, sexual response, and sexual functioning were administered to 797 women with and without NSE histories. Women were grouped based on when their NSEs first occurred in reference to their age of menarche and age of their first consensual sexual experience (i.e., premenarche onset, postmenarche preconsensual onset, postconsensual onset, and no NSEs)...
September 21, 2017: Journal of Sex Research
https://www.readbyqxmd.com/read/28933870/the-role-of-young-adult-social-bonds-substance-problems-and-sexual-risk-in-pathways-between-adolescent-substance-use-and-midlife-risky-sexual-behavior-among-urban-african-americans
#6
Katarzyna A Zebrak, Kerry M Green
African Americans are disproportionately affected by HIV/AIDS and other sexually transmitted infections relative to other racial groups. Although substance use has been linked to risky sexual behavior, the understanding of how these associations develop over the life course remains limited, particularly the role of social bonds. This study uses structural equation modeling to examine pathways from adolescent substance use to young adult sexual risk, substance problems, and social bonds and then to midlife risky sexual behavior among African American men and women, controlling for childhood confounders...
September 21, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28933037/effects-of-strain-sex-and-season-on-body-weight-development-of-cane-rat-thryonomys-swinderianus-in-the-humid-tropics
#7
Oluwatosin M A Jesuyon
The effects of strain (G), sex (H), and season (S) on live weight development of cane rats (Thryonomys swinderianus) reared in captive system were investigated during the dry (35.95 °C) and wet seasons (25.81 °C) from February to August of a tropical environment. The field experiment took place at the University of Ibadan. Seventy-nine cane rats spreading among three genotypes (Bamidele, FRIN, and Lawole) of different age and body weight groups were randomly distributed into cages using randomized complete block design in factorial...
September 20, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28931221/modeling-of-us-human-papillomavirus-hpv-seroprevalence-by-age-and-sexual-behavior-indicates-an-increasing-trend-of-hpv-infection-following-the-sexual-revolution
#8
Marc D Ryser, Anne Rositch, Patti E Gravitt
Background: The United States has experienced an increase in the incidence of human papillomavirus (HPV)-related cancers that are not screen-detectable. It has been hypothesized, but not directly demonstrated, that this is due to increasing HPV prevalence in the unvaccinated population. Methods: Female self-reported numbers of lifetime sex partners and HPV serology from the National Health and Nutrition Examination Survey (NHANES) were used to develop mathematical models of sexual partner acquisition and antibody dynamics...
September 1, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28929946/egalitarian-from-homophile-to-helicophile-in-post-ww2-america
#9
Diederik F Janssen
The presidency of gender in the Anglo-American taxonomy of sexualities has historically been haunted by the irruption of "other" parameters of medicalization, censure and caesura, not in the least absolute and relative measures of age. Where today's clinical psychologists feel the need to age-specify adult homosexuality in such Hirschfeldian terms as androphilia, however, the felt need is indeed still essentially clinical. That cosmopolitan expressions such as homosexual, LGB or queer rarely require such specifications relies on a protracted and today arguably complete disarticulation of sex/gender and age/maturity as parameters of sexual orientation, accreditation and mobilization...
September 20, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/28929893/long-term-health-outcomes-of-childhood-sexual-abuse-and-peer-sexual-contact-among-an-urban-sample-of-behaviourally-bisexual-latino-men
#10
Brian Mattera, Ethan C Levine, Omar Martinez, Miguel Muñoz-Laboy, Carolina Hausmann-Stabile, José Bauermeister, M Isa Fernandez, Don Operario, Carlos Rodriguez-Diaz
While previous research indicates high rates of childhood sexual abuse among Latino men who have sex with men, few studies have examined the long-term health outcomes of childhood sexual abuse specifically among behaviourally bisexual Latino men. In a sample of 148 behaviourally bisexual Latino men in New York City, we examined associations between childhood sexual abuse and multiple dimensions of adult health: sexual risk behaviours; sexually transmitted infections incidence; polydrug use; depressive symptoms; and perceived stress...
September 20, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28929864/the-role-of-patient-provider-sexual-health-communication-in-understanding-the-uptake-of-hiv-prevention-services-among-black-men-who-have-sex-with-men
#11
Alvin J Rucker, Ashley Murray, Zaneta Gaul, Madeline Y Sutton, Patrick A Wilson
We examined factors that may be associated with whether Black men who have sex with men a) disclose their sexual orientation to healthcare providers, and b) discuss their sexual health with healthcare providers to inform interventions to improve HIV prevention efforts and reduce HIV incidence rates among Black men who have sex with men. During 2011-2012, we conducted semi-structured individual in-depth interviews with Black men who have sex with men in New York City. Interviews were audio recorded. We examined transcribed responses for main themes using a qualitative exploratory approach followed by computer-assisted thematic analyses...
September 20, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28927341/perceived-need-of-and-interest-in-hiv-pre-exposure-prophylaxis-amongst-men-who-have-sex-with-men-attending-three-sexual-health-clinics-in-london-uk
#12
Lauren Bull, Pavle Dimitrijevic, Sophie Beverley, Alex Scarborough, Sundhiya Mandalia, Olamide Dosekun, Tristan Barber, Iain Reeves, Sheena McCormack, Michael Rayment
HIV pre-exposure prophylaxis (PrEP) has proven efficacy in reducing the risk of HIV infection in men who have sex with men (MSM), but has not yet been commissioned in the UK. The aim of this study was to investigate perceived need and benefit (or experience of) PrEP among HIV-negative MSM attending sexual health clinics. HIV-negative MSM attending three sexual health centres in London, UK were opportunistically invited to complete a questionnaire. Data collected comprised demographic data and sexual and drug use behaviours as well as questions regarding perceptions of risk and need for PrEP...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28926403/pathways-from-sexual-stigma-to-incident-hiv-and-sexually-transmitted-infections-among-nigerian-men-who-have-sex-with-men
#13
Cristina Rodriguez-Hart, Rebecca G Nowak, Rashelle Musci, Danielle German, Ifeanyi Orazulike, Blessing Kayode, Hongjie Liu, Oye Gureje, Trevor A Crowell, Stefan Baral, Man Charurat
OBJECTIVES: Sexual stigma affecting men who have sex with men (MSM) in Nigeria may be an important driver of HIV and other sexually transmitted infections (STIs), but potential mechanisms through which this occurs are not well understood. This study assessed the contributions of suicidal ideation and sexual risk behaviors to causal pathways between stigma and HIV/STIs. DESIGN: Data were collected from the TRUST/RV368 Study, a prospective cohort of 1,480 MSM from Abuja and Lagos, Nigeria...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28923720/rosa-damascena-oil-improved-methadone-related-sexual-dysfunction-in-females-with-opioid-use-disorder-under-methadone-maintenance-therapy-%C3%A2-results-from-a-double-blind-randomized-and-placebo-controlled-trial
#14
Vahid Farnia, Faeze Tatari, Mostafa Alikhani, Katayoun Yazdchi, Moshen Taghizadeh, Dena Sadeghi Bahmani, Hassan Karbasizadeh, Edith Holsboer-Trachsler, Serge Brand
BACKGROUND: Methadone maintenance therapy (MMT) is provided to patients with opioid use disorder (OUD). However, as with all opioids, methadone impacts negatively on sexual function. To counter this, Rosa Damascena oil (RDO) has been used successfully for opioid-dependent male patients under MMT and with methadone-related sexual dysfunction (MRSD). In the present study, we tested the possible influence of RDO on sexual function and sex hormones of opioid-dependent female patients undergoing MMT and with MRSD...
August 16, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28923336/-sexual-behaviour-and-human-immunodeficiency-virus-testing-in-university-students-from-cuzco-peru
#15
M Paz Bermúdez, M Teresa Ramiro, Inmaculada Teva, Tamara Ramiro-Sánchez, Gualberto Buela-Casal
OBJECTIVE: To analyse sexual behaviour, HIV testing, HIV testing intentions and reasons for not testing for HIV in university students from Cuzco (Peru). METHODS: The sample comprised 1,377 university students from several institutions from Cuzco (Peru). The size of the sample was set according to a maximum 3% error estimation and a 97% confidence interval. Ages ranged from 16 to 30 years old. The data were collected through a self-administered, anonymous and voluntary questionnaire regarding sexual behaviour and HIV testing...
September 15, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/28923310/factors-associated-with-specific-diagnostic-and-statistical-manual-of-mental-disorders-fourth-edition-sexual-dysfunctions-in-breast-cancer-survivors-a-study-of-patients-and-their-partners
#16
Susanna B Hummel, Daniela E E Hahn, Jacques J D M van Lankveld, Hester S A Oldenburg, Eva Broomans, Neil K Aaronson
BACKGROUND: Many women develop sexual problems after breast cancer (BC) treatment. Little is known about BC survivors with a Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) sexual dysfunction and their partners, and the factors associated with their sexual functioning. AIM: To evaluate (i) patient-related and clinical factors associated with (a) specific DSM-IV sexual dysfunctions and (b) level of sexual functioning and sexual distress as reported by BC survivors and (ii) the association between the sexual functioning of BC survivors and that of their partners...
September 8, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28922735/assessing-the-interplay-of-childhood-adversities-with-more-recent-stressful-life-events-and-conditions-in-predicting-panic-pathology-among-adults-from-the-general-population
#17
E Asselmann, J Stender, H J Grabe, J König, C O Schmidt, A O Hamm, C A Pané-Farré
BACKGROUND: Although research suggests that (a) childhood adversities and more recent stressful life events/conditions are risk factors for panic pathology and that (b) early life stress increases vulnerability to later psychopathology, it remains unclear whether childhood adversities amplify the association between more recent stressful life events/conditions and panic pathology. METHODS: Data were derived from a general population sample (Study of Health in Pomerania, SHIP)...
August 24, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28922406/loss-of-liver-specific-and-sexually-dimorphic-gene-expression-by-aryl-hydrocarbon-receptor-activation-in-c57bl-6-mice
#18
Rance Nault, Kelly A Fader, Jack R Harkema, Tim Zacharewski
The aryl hydrocarbon receptor (AhR) is a highly conserved transcription factor that mediates a broad spectrum of species-, strain-, sex-, age-, tissue-, and cell-specific responses elicited by structurally diverse ligands including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Dose-dependent effects on liver-specific and sexually dimorphic gene expression were examined in male and female mice gavaged with TCDD every 4 days for 28 or 92 days. RNA-seq data revealed the coordinated repression of 181 genes predominately expressed in the liver including albumin (3...
2017: PloS One
https://www.readbyqxmd.com/read/28919833/conventional-culture-versus-nucleic-acid-amplification-tests-for-screening-of-urethral-neisseria-gonorrhea-infection-among-asymptomatic-men-who-have-sex-with-men
#19
Jiratha Budkaew, Bandit Chumworathayi, Chamsai Pientong, Tipaya Ekalaksananan
BACKGROUND: Many methods are used to detect urethral Neisseria gonorrhea (NG) infection among asymptomatic men who have sex with men (MSM). The objective of this study was to define the performance of conventional culture compared to real-time polymerase chain reaction (PCR) for diagnosis of asymptomatic urethral gonorrhea among MSM. METHODS: In this cross-sectional study, 147 clinical specimens for NG testing from asymptomatic participants were evaluated. MSM >18 years old who consented to undergo urethral swab and collection of urine samples from two clinics (one was the sexually transmitted diseases (STDs) mobile clinic and the second was the antiretroviral clinic) located in Khon Kaen, Thailand, were recruited...
2017: Pragmatic and Observational Research
https://www.readbyqxmd.com/read/28919821/prevalence-of-fertility-desire-and-its-associated-factors-among-15-to-49-year-old-people-living-with-hiv-aids-in-addis-ababa-ethiopia-a-cross-sectional-study-design
#20
Takele Menna Adilo, Hirut Megerssa Wordofa
BACKGROUND: The magnitude of unprotected sex to satisfy the desire for fertility among people living with HIV/AIDS (PLHIV) may rise more due to the availability of antiretroviral therapy (ART) in most HIV-affected countries. This could, however, have the risk of passing on HIV to sexual partners and children. The aim of this study, therefore, was to determine the magnitude and factors associated with the fertility desire of reproductive-age PLHIV in Addis Ababa, Ethiopia, for research-based and timely actions...
2017: HIV/AIDS: Research and Palliative Care
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