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Sexuality, Sex and Aging

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https://www.readbyqxmd.com/read/28445686/when-a-relationship-is-imperative-will-young-women-knowingly-place-their-sexual-health-at-risk-a-sample-of-african-american-adolescent-girls-in-the-juvenile-justice-system
#1
Jerris L Raiford, Puja Seth, Amy M Fasula, Ralph J DiClemente
Background: HIV and other sexually transmissible infections (HIV/STIs) are significant contributors to adolescent girls' morbidity in the US. Risks for HIV/STIs are increased among adolescent girls involved in the juvenile justice system, and African American adolescent girls comprise nearly 50% of adolescent girls in detention centres. Although HIV prevention programs focus on HIV/STI knowledge, increased knowledge may not be sufficient to reduce sexual risk. The present study examined the interactive effects of HIV/STI knowledge and the importance of being in a relationship (a relationship imperative) on sexual risk behaviours in a sample of detained African American adolescent girls...
April 27, 2017: Sexual Health
https://www.readbyqxmd.com/read/28445139/pannexin1-knockout-and-blockade-reduces-ischemic-stroke-injury-in-female-but-not-in-male-mice
#2
Moises Freitas-Andrade, John F Bechberger, Brian A MacVicar, Victor Viau, Christian C Naus
The membrane channel Pannexin 1 (Panx1) mediates apoptotic and inflammatory signaling cascades in injured neurons, responses previously shown to be sexually dimorphic under ischemic conditions. We tested the hypothesis that Panx1 plays an underlying role in mediating sex differences in stroke outcome responses. Middle-aged, 8-9 month old male and female wild type and Panx1 KO mice were subjected to permanent middle cerebral artery (MCA) occlusion, and infarct size and astrocyte and microglia activation were assessed 4 days later...
April 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28444897/aging-asexual-lineages-and-the-evolutionary-maintenance-of-sex
#3
E K H Ho, A F Agrawal
Finite populations of asexual and highly selfing species suffer from a reduced efficacy of selection. Such populations are thought to decline in fitness over time due to accumulating slightly deleterious mutations or failing to adapt to changing conditions. These within-population processes that lead non-recombining species to extinction may help maintain sex and outcrossing through species level selection. Although inefficient selection is proposed to elevate extinction rates over time, previous models of species selection for sex assumed constant diversification rates...
April 26, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28444628/moving-beyond-age-an-exploratory-qualitative-study-on-the-context-of-young-african-american-men-and-women-s-sexual-debut
#4
Yzette Lanier, Jennifer M Stewart, Jean J Schensul, Barbara J Guthrie
African American youth continue to be disproportionately affected by HIV. Early sexual debut has been identified as a major determinant of HIV risk. However, emerging research suggests that the overarching context in which first sex occurs may have greater implications for sexual health than simply age alone. The purpose of this exploratory, qualitative study was to better understand the broader context of African Americans' sexual debut. In-depth, semi-structured interviews were conducted with 10 African American men and women aged 18-24 years...
April 25, 2017: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/28444470/sexual-orientation-differences-in-health-and-wellbeing-among-women-living-with-hiv-in-canada-findings-from-a-national-cohort-study
#5
Carmen H Logie, Ashley Lacombe-Duncan, Ying Wang, Angela Kaida, Alexandra de Pokomandy, Kath Webster, Tracey Conway, Mona Loutfy
Sexual orientation differences in health and wellbeing among women living with HIV (WLH) are underexplored. Limited research available, however, suggests that sexual minority WLH may experience barriers to HIV care. Cross-sectional baseline data was analyzed from a Canadian cohort study with WLH (sexual minority women [SMW]: n = 180; heterosexual women: n = 1240). SMW (median age 38 years, IQR 13) included bisexual (58.9%), lesbian (17.8%) and other sexualities (23.3%). In multivariable analyses adjusting for age, poverty, education, and ethnicity, SMW identity was associated with increased odds of: clinical (80% vs...
April 25, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28444243/sexual-activity-and-relationship-quality-in-middle-and-older-age-findings-from-the-irish-longitudinal-study-on-ageing-tilda
#6
Joanna Orr, Richard Layte, Neil O'Leary
Objectives: This study assessed the association between sexual activity, mismatches in the importance attributed to sex within couples, and relationship quality in older Irish adults. Method: We used data from the Irish Longitudinal Study on Ageing (TILDA) to derive a scale of subjective relationship strain in married or cohabiting individuals. Negative binomial regression was used to assess the association between relationship strain and sexual activity. Separate models assessed the associations with importance of sex and within-couple mismatch in the importance attributed to sex and whether these associations were independent from sexual activity...
April 21, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28444004/relation-between-hiv-status-risky-sexual-behavior-and-mental-health-in-an-msm-sample-from-three-chilean-cities
#7
Fabiola Gómez, Jaime Barrientos, Manuel Cárdenas
Objective: To explore the association among HIV status; negative psychological symptoms (anxiety, depression, and hostility); and risky sexual behaviors (multiple sexual partners and unprotected sexual intercourse) in a Chilean sample of men who have sex with men (MSM). Methods: This study had a cross-sectional design and a sample of 325 MSM whose ages ranged from 18 to 64 years (mean: 30.8; standard deviation: 9.8). Association tests (chi-squared) and group mean comparisons (Student's t-tests and F-tests) were performed...
April 20, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28442801/treatment-outcomes-and-loss-to-follow-up-rate-of-male-patients-with-gonococcal-and-nongonococcal-urethritis-who-attended-the-sexually-transmitted-disease-clinic-an-8-year-retrospective-study
#8
Charussri Leeyaphan, Sukhum Jiamton, Pattriya Chanyachailert, Theetat Surawan, Viboon Omcharoen
BACKGROUND: Poor follow-up compliance of patients with infectious urethritis is a recognized and serious public health problem in Thailand. AIM: The aim of this study was to determine treatment outcomes and loss to follow-up rate of male patients with gonococcal urethritis (GU) and non-GU (NGU) at a sexually transmitted disease (STD) clinic at Thailand's tertiary hospital. METHODS: This retrospective chart review of male patients who sought treatment at STDs Clinic, Siriraj Hospital, and who were diagnosed with GU and/or NGU was conducted during January 2007 to December 2014 study period...
January 2017: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28442798/knowledge-and-attitude-about-sexually-transmitted-infections-other-than-hiv-among-college-students
#9
Nagesh Tumkur Subbarao, A Akhilesh
BACKGROUND: Sexually transmitted infections (STIs) are the infections which are mainly transmitted through sexual intercourse. Young individuals in the age group of 16 to 24 years are considered to be at more risk for STIs compared to older adults. Young individuals are more likely to practice unprotected sex and have multiple sexual partners. If the STIs are not treated adequately, it can lead to various complications.Most of the people may be aware about HIV/AIDs because of the awareness created by media and the government programs, however knowledge about STIs other than HIV/AIDS is low in the developing countries...
January 2017: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28441458/evidence-that-promotion-of-male-circumcision-did-not-lead-to-sexual-risk-compensation-in-prioritized-sub-saharan-countries
#10
Chyun-Fung Shi, Michael Li, Jonathan Dushoff
BACKGROUND: WHO and UNAIDS prioritized 14 eastern and southern African countries with high HIV and low male circumcision prevalence for a voluntary medical male circumcision (VMMC) scale-up in 2007. Because circumcision provides only partial protection against HIV infection to men, the issue of possible risk compensation in response to VMMC campaigns is of particular concern. In this study, we looked at population-level survey data from the countries prioritized by WHO for a VMMC scale-up...
2017: PloS One
https://www.readbyqxmd.com/read/28441096/judicial-decision-making-and-juvenile-offenders-effects-of-medical-evidence-and-victim-age
#11
John Michael Falligant, Rebecca L Fix, Apryl A Alexander
A growing body of evidence suggests that jurors place greater weight on DNA or other types of forensic evidence than non-forensic evidence (Cole & Dioso-Villa, 2009). For cases involving child sexual abuse, certain types of evidence, including forensic medical evidence, may be viewed as more important or indicative of abuse than other types of evidence, such as victim statements or disclosure. The present study evaluated perceptions of juvenile offenders and victim credibility across four vignettes that systematically manipulated variables related to victim age and physical indicators of abuse...
April 25, 2017: Journal of Child Sexual Abuse
https://www.readbyqxmd.com/read/28440036/a-tale-of-two-countries-all-cause-mortality-among-people-living-with-hiv-and-receiving-combination-antiretroviral-therapy-in-the-uk-and-canada
#12
S Patterson, S Jose, H Samji, A Cescon, E Ding, J Zhu, J Anderson, A N Burchell, C Cooper, T Hill, M Hull, M B Klein, M Loutfy, F Martin, N Machouf, Jsg Montaner, M Nelson, J Raboud, S B Rourke, C Tsoukas, R S Hogg, C Sabin
OBJECTIVES: We sought to compare all-cause mortality of people living with HIV and accessing care in Canada and the UK. METHODS: Individuals from the Canadian Observational Cohort (CANOC) collaboration and UK Collaborative HIV Cohort (UK CHIC) study who were aged ≥ 18 years, had initiated antiretroviral therapy (ART) for the first time between 2000 and 2012 and who had acquired HIV through sexual transmission were included in the analysis. Cox regression was used to investigate the difference in mortality risk between the two cohort collaborations, accounting for loss to follow-up as a competing risk...
April 24, 2017: HIV Medicine
https://www.readbyqxmd.com/read/28439908/possible-role-of-serum-testosterone-gonadotropins-and-prolactin-in-patients-with-premature-ejaculation
#13
M Abu El-Hamd, A Farah
Premature ejaculation (PE) is the most common male sexual dysfunction. This study aimed to investigate the role of serum testosterone, gonadotropins and prolactin in patients with PE. In a prospective a case-controlled study, it was conducted on 90 male patients with PE and 90 male healthy participants as controls. Patients were evaluated by Premature Ejaculation Diagnostic Tool (PEDT) and intravaginal ejaculatory latency time (IELT). Patients with mean IELT values ≤60 s and PEDT total scores ≥11 were considered to have PE...
April 24, 2017: Andrologia
https://www.readbyqxmd.com/read/28438374/validity-of-self-assessed-sexual-maturation-against-physician-assessments-and-hormone-levels
#14
Jorge E Chavarro, Deborah J Watkins, Myriam C Afeiche, Zhenzhen Zhang, Brisa N Sánchez, David Cantonwine, Adriana Mercado-García, Clara Blank-Goldenberg, John D Meeker, Martha María Téllez-Rojo, Karen E Peterson
OBJECTIVE: To compare self-report and physician assessments of sexual maturation against serum hormone markers to evaluate the hypothesis that the validity of self-assessed sexual maturation is underestimated in traditional validation studies. STUDY DESIGN: We adapted a self-assessment instrument that 248 Mexican children and adolescents, aged 8-13 years, completed. The participants were examined by a trained pediatrician and provided fasting blood samples for measurement of reproductive hormones (eg, testosterone, estradiol, sex hormone-binding globulin, inhibin B) and other hormones (eg, C-peptide, insulin-like growth factor 1, leptin, dehydroepiandrosterone sulfate) known to change during adolescence...
April 21, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28436758/amphetamine-type-stimulants-ats-use-and-homosexuality-related-enacted-stigma-are-associated-with-depression-among-men-who-have-sex-with-men-msm-in-two-major-cities-in-vietnam-in-2014
#15
Nga Thi Thu Vu, Martin Holt, Huong Thi Thu Phan, Lan Thi La, Gioi Minh Tran, Tung Thanh Doan, Trang Nguyen Nhu Nguyen, John de Wit
BACKGROUND: Men who have sex with men (MSM) are disproportionately affected by mental health concerns, including depression. Amphetamine-type-stimulants (ATS) use and homosexuality-related stigma and discrimination have been found associated with depression among MSM. OBJECTIVES: To assess the prevalence of depression and its associations with ATS use and homosexuality-related stigma and discrimination among MSM in Vietnam. METHODS: 622 MSM were conveniently recruited in Hanoi and Ho Chi Minh city, Vietnam, from September to December 2014...
April 24, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28430968/sex-chromosome-dependent-differential-viability-of-human-spermatozoa-during-prolonged-incubation
#16
Young-Ah You, Woo-Sung Kwon, Md Saidur Rahman, Yoo-Jin Park, Young-Ju Kim, Myung-Geol Pang
STUDY QUESTION: Are there significant differences in the ability of X chromosome-bearing (X) spermatozoa and Y chromosome-bearing (Y) spermatozoa to survive incubation under stressful conditions? SUMMARY ANSWER: Y spermatozoa are more vulnerable to stress than their X counterparts depending on culture period and temperature, and show higher expression of apoptotic proteins. WHAT IS KNOWN ALREADY: The primary sex ratio is determined by there being an equal number of spermatozoa carrying X and Y chromosomes...
April 19, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28426546/methamphetamine-use-and-dependence-in-vulnerable-female-populations
#17
Phunnapa Kittirattanapaiboon, Soontaree Srikosai, Apisak Wittayanookulluk
PURPOSE OF REVIEW: The study reviews recent publications on methamphetamine use and dependence women in term of their epidemic, physical health impact, psychosocial impacts, and also in the identified vulnerable issues. RECENT FINDINGS: Studies of vulnerable populations of women are wide ranging and include sex workers, sexual minorities, homeless, psychiatric patients, suburban women, and pregnant women, in which amphetamine type stimulants (ATSs) are the most commonly reported illicit drug used among them...
April 19, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/28426406/infection-of-the-lesser-spotted-dogfish-with-proleptus-obtusus-dujardin-1845-nematoda-spirurida-reflects-ontogenetic-feeding-behaviour-and-seasonal-differences-in-prey-availability
#18
Carlota Silva, Ana Veríssimo, Pedro Cardoso, Jo Cable, Raquel Xavier
Proleptus obtusus Dujardin, 1845 is the most common parasite infecting the gut of the lesser spotted dogfish (Scyliorhinus canicula, Linnaeus). This nematode is trophically transmitted from an intermediate crustacean host to the definitive elasmobranch host. Sexual and age-related differences in habitat occupancy and feeding behaviour of the lesser spotted dogfish make this parasite-host dyad ideal for testing which aspects of host biology influence parasite transmission. Here, the relationship between P. obtusus burden and host condition, sex and age were investigated in lesser spotted dogfish captured in the Northeast Atlantic...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426361/sociodemographic-and-substance-use-disorder-determinants-of-hiv-sexual-risk-behavior-in-men-and-women-in-outpatient-drug-treatment-in-the-nida-national-drug-abuse-treatment-clinical-trials-network
#19
Jeremy D Kidd, Susan Tross, Martina Pavlicova, Mei-Chen Hu, Aimee N C Campbell, Edward V Nunes
BACKGROUND: Sexual risk behavior is now the primary vector of HIV transmission among substance users in the United States with gender as a crucial moderator of risk behavior. OBJECTIVES: The purpose of this study was to examine gender differences in factors (age, race/ethnicity, education) that predict main-partner unprotected sexual occasions (USO) using the unique platform of two parallel NIDA National Drug Abuse Treatment Clinical Trials Network gender-specific safer sex intervention trials...
June 7, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28426301/small-group-randomized-controlled-trial-to-increase-condom-use-and-hiv-testing-among-hispanic-latino-gay-bisexual-and-other-men-who-have-sex-with-men
#20
Scott D Rhodes, Jorge Alonzo, Lilli Mann, Eunyoung Y Song, Amanda E Tanner, Jorge Elias Arellano, Rodrigo Rodriguez-Celedon, Manuel Garcia, Arin Freeman, Beth A Reboussin, Thomas M Painter
OBJECTIVES: To evaluate the HOLA en Grupos intervention, a Spanish-language small-group behavioral HIV prevention intervention designed to increase condom use and HIV testing among Hispanic/Latino gay, bisexual, and other men who have sex with men. METHODS: In 2012 to 2015, we recruited and randomized 304 Hispanic/Latino men who have sex with men, aged 18 to 55 years in North Carolina, to the 4-session HOLA en Grupos intervention or an attention-equivalent general health education comparison intervention...
April 20, 2017: American Journal of Public Health
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