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Sexual behavior in humans

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https://www.readbyqxmd.com/read/29163330/white-matter-changes-in-hiv-women-with-a-history-of-cocaine-dependence
#1
Kathryn-Mary Wakim, Ciara J Molloy, Ryan P Bell, Lars A Ross, John J Foxe
Cocaine use is associated with the transmission of human immunodeficiency (HIV) virus through risky sexual behavior. In HIV+ individuals, cocaine use is linked with poor health outcomes, including HIV-medication non-adherence and faster disease progression. Both HIV and cocaine dependence are associated with reduced integrity of cerebral white matter (WM), but the effects of HIV during cocaine abstinence have not yet been explored. We used diffusion tensor imaging (DTI) to understand the effect of combined HIV+ serostatus and former cocaine dependence on cerebral WM integrity...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29155331/evolution-of-vomeronasal-receptor-1-v1r-genes-in-the-common-marmoset-callithrix-jacchus
#2
Keiko Moriya-Ito, Takashi Hayakawa, Hikoyu Suzuki, Kimiko Hagino-Yamagishi, Masato Nikaido
Pheromones are crucial for eliciting innate responses and inducing social and sexual behaviors in mammals. The vomeronasal receptor 1 genes, V1Rs, encode members of a pheromone receptor family that are mainly expressed in the vomeronasal organ (VNO). The V1R family shows extraordinary variety in gene number among vertebrates owing to successive gene gains and losses during evolution. Such diversity is believed to reflect a degree of dependence on the VNO. We investigated V1R evolution in primate lineages closely related to humans because these VNOs show a trend toward degeneration...
November 16, 2017: Gene
https://www.readbyqxmd.com/read/29150417/using-facebook-to-recruit-young-australian-men-into-a-cross-sectional-human-papillomavirus-study
#3
Roopa Das, Dorothy A Machalek, Edmund G Molesworth, Suzanne M Garland
BACKGROUND: Young men can be difficult to engage in health research using traditional methods of recruitment. Social networking sites are increasingly being used to recruit participants into health research, due to their cost effectiveness, overall generalizability, and wide reach. OBJECTIVE: The aim of this study was to determine the feasibility of using Facebook to recruit young Australian men into a human papillomavirus (HPV) prevalence study. METHODS: We recruited male permanent residents of Australia, aged 18 to 35 years, into the HPV in Young Males (HYM) study through targeted advertising placed on Facebook...
November 17, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29149907/mapping-evidence-on-the-distribution-of-human-papillomavirus-related-cancers-in-sub-saharan-africa-scoping-review-protocol
#4
Bridget K M Lekoane, Tivani P Mashamba-Thompson, Themba G Ginindza
BACKGROUND: Despite the introduction of HPV vaccines, the incidence of HPV-related cancers (cervical, penile, anal, vulvar, vagina, head, and neck) in sub-Saharan Africa has been rising. The increasing incidence of these HPV-related cancers has been attributed to changes in lifestyle-related risk factors, most notably sexual behavior. The main objective of this study is to map evidence on the distribution of HIV-related cancers in sub-Saharan Africa (SSA). METHODS AND ANALYSIS: We will conduct a scoping review to explore, describe, and map literature on the distribution of HPV-related cancers in sub-Saharan Africa...
November 17, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/29148839/sexual-risk-behaviors-and-perceptions-of-men-who-go-to-gay-sex-parties-in-new-york-city-comparisons-between-three-hiv-groups
#5
Étienne Meunier, Karolynn Siegel
Men who have sex with men (MSM) who attend group-sex events often engage in risky sexual behaviors that contribute to the high human immunodeficiency virus (HIV) incidence among this population. We conducted an online survey with 211 New York City MSM who attended sex parties in the prior year and asked them to describe their behaviors and perceptions of risk. We compared responses from HIV-positive-undetectable men (n = 36), HIV-negative men on pre-exposure prophylaxis (PrEP; n = 62), and HIV-negative men never on PrEP (n = 113)...
November 17, 2017: Journal of Sex Research
https://www.readbyqxmd.com/read/29145186/the-kl%C3%A3-ver-bucy-syndrome
#6
Douglas J Lanska
In 1937, Heinrich Klüver and Paul Bucy described a dramatic behavioral syndrome in monkeys after bilateral temporal lobectomy. The full Klüver-Bucy syndrome (KBS) - hyperorality, placidity, hypermetamorphosis, dietary changes, altered sexual behavior, and visual agnosia - is evident within 3 weeks following operation. Some KBS features (i.e., hyperorality, placidity, hypermetamorphosis) persist indefinitely, whereas others gradually resolve over several years. Klüver and Bucy were initially unaware of an earlier report of KBS by Sanger Brown and Edward Schäfer in 1888...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29145185/hypersexuality-in-neurological-disorders-from-disinhibition-to-impulsivity
#7
M Béreau
Little is known about the neurological control of human sexual behavior. Investigating and measuring this behavior by using quantitative and objective methods is difficult. Insights from lesion studies contribute to analyze the effects of neurological disorders on human sexual behavior. In this chapter, we focus on frontal lobe lesions, brain injuries, epilepsia, dementia, and Parkinson disease to describe human sexual behavior disorders, in order to highlight cortical and subcortical brain regions and neural networks involved in human sexual behavior...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29136744/-factors-associated-with-syphilis-hiv-infection-among-men-who-have-sex-with-men-in-shenzhen-2011-2016
#8
Y M Cai, Y J Song, H Liu, F C Hong
Objective: To investigate the factors associated with syphilis/HIV infection among men who have sex with men (MSM) maintaining a single sexual partner in Shenzhen. Methods: Respondent driven sampling and snowball sampling method were used to recruit MSM receiving voluntary counseling and testing in Shenzhen Rainbow clinic from 2011 to 2016. INCLUSION CRITERIA: aged 18 years and above; reported having one or more anal sexual partners in the recent 6 months. A total of 3 109 men who have sex with men (MSM) were involved in the study...
November 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29136741/-characteristics-of-non-marital-and-non-commercial-heterosexual-transmission-of-hiv-infection-in-miao-dong-autonomous-prefecture-of-qiandongnan
#9
Q Y Yu, F L Wang, P Xu, H J Wen, Y X Xiong, J Yang, Y Long, H J He, J Shi, P Lyu
Objective: The goal of this research was to understand the demographic distribution and related factors of non-marital and non-commercial heterosexual transmission (non-commercial transmission) for HIV/AIDS (human immunodeficiency virus/acquired immunodeficiency syndrome). Methods: Data related to HIV/AIDS infected by non-marital heterosexual transmission and whose present address was in Qian Dongnan, were collected from Information System on the HIV/AIDS Prevention and Control. Information included demographic characteristics, the members of non-marital sex partners, transmission path, detection source, CD4(+)T lymphocyte level, et al...
November 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29130791/the-sexual-health-of-women-in-lebanon-are-there-differences-by-sexual-orientation
#10
Jessica D Gereige, Li Zhang, Ulrike Boehmer
PURPOSE: From studies conducted in Western countries (United States, United Kingdom, and Australia), we know that the sexual health of sexual minority women (SMW) differs in key ways from that of heterosexual women (HSW). To date, the sexual health of SMW living in the Middle East and North Africa region has not been studied. The purpose of this study was to compare the sexual health of SMW and HSW living in Lebanon. METHODS: SMW and HSW living in Lebanon (N = 95) completed an anonymous, self-administered survey...
November 13, 2017: LGBT Health
https://www.readbyqxmd.com/read/29129680/existential-issues-in-sexual-medicine-the-relation-between-death-anxiety-and-hypersexuality
#11
REVIEW
Daniel N Watter
INTRODUCTION: Current sex therapy and sexual medicine protocols often ignore the existential dilemmas associated with sexual dysfunction and other problematic sexual problems. This oversight is especially apparent when assessing and treating the controversial phenomenon of hypersexuality, or "sexual addiction." A deeper understanding of the existential concept of death anxiety could offer an alternative treatment paradigm that might lead to a more effective treatment outcome. AIM: To explore the relation between the existential phenomenon of death anxiety and hypersexuality (ie, sexual addiction) and present an evaluation and treatment paradigm that is rooted in existential psychotherapy, a form of psychotherapy that is a deeply life-affirming and dynamic approach to therapy that focuses on concerns rooted in the individual's existence...
November 9, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/29126806/modeling-the-consequences-of-regional-heterogeneity-in-human-papillomavirus-hpv-vaccination-uptake-on-transmission-in-switzerland
#12
Maurane Riesen, Victor Garcia, Nicola Low, Christian L Althaus
BACKGROUND: Completed human papillomavirus (HPV) vaccination by age 16 years among women in Switzerland ranges from 17 to 75% across 26 cantons. The consequences of regional heterogeneity in vaccination coverage on transmission and prevalence of HPV-16 are unclear. METHODS: We developed a deterministic, population-based model that describes HPV-16 transmission among young adults within and between the 26 cantons of Switzerland. We parameterized the model using sexual behavior data from Switzerland and data from the Swiss National Vaccination Coverage Survey...
November 7, 2017: Vaccine
https://www.readbyqxmd.com/read/29110806/masturbation-to-orgasm-stimulates-the-release-of-the-endocannabinoid-2-arachidonoylglycerol-in-humans
#13
Johannes Fuss, Laura Bindila, Klaus Wiedemann, Matthias K Auer, Peer Briken, Sarah V Biedermann
BACKGROUND: Endocannabinoids are critical for rewarding behaviors such as eating, physical exercise, and social interaction. The role of endocannabinoids in mammalian sexual behavior has been suggested because of the influence of cannabinoid receptor agonists and antagonists on rodent sexual activity. However, the involvement of endocannabinoids in human sexual behavior has not been studied. AIM: To investigate plasma endocannabinoid levels before and after masturbation in healthy male and female volunteers...
November 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29108963/influences-of-social-reward-experience-on-behavioral-responses-to-drugs-of-abuse-review-of-shared-and-divergent-neural-plasticity-mechanisms-for-sexual-reward-and-drugs-of-abuse
#14
REVIEW
Lauren N Beloate, Lique M Coolen
Different factors influence the development of drug addiction in humans, including social reward experiences. In animals, experience with social rewards, such as sexual behavior, pair bonding, social and environmental enrichment, can be protective. However, loss or lack of social rewards can lead to a vulnerability to drug-seeking behavior. The effects of social reward experience on drug-seeking behavior are associated with changes in the neural pathways that control drug-related behavior. This review will provide an introduction and overview of the mesolimbic pathway and the influence of social reward experience on drug-seeking behavior in rodents...
November 3, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29095843/transgender-female-sex-workers-hiv-knowledge-experienced-stigma-and-condom-use-in-the-dominican-republic
#15
Henna Budhwani, Kristine R Hearld, Julia Hasbun, Rebecca Charow, Santo Rosario, Louise Tillotson, Elaine McGlaughlin, John Waters
INTRODUCTION: Not only do transgender female sex workers have some of the highest rates of sexually transmitted infections (STI), human immunodeficiency virus (HIV), and experienced stigma, they also have higher likelihood of early sexual debut and some of the lowest levels of educational attainment compared to other stigmatized populations. Some of the most common interventions designed to reduce transmission of HIV and STIs seek to educate high-risk groups on sexual health and encourage condom use across all partner types; however, reaching stigmatized populations, particularly those in resource-limited settings, is particularly challenging...
2017: PloS One
https://www.readbyqxmd.com/read/29080672/fezf1-is-a-novel-regulator-of-female-sex-behavior-in-mice
#16
Tomaz Büdefeld, Tanja Spanic, Milka Vrecl, Gregor Majdic
Female sexual behavior is a complex process regulated by multiple brain circuits and influenced by sex steroid hormones acting in the brain. Several regions in the hypothalamus have been implicated in the regulation of female sexual behavior although a complete circuitry involved in female sexual behavior is not understood. Fez family zinc finger 1 (Fezf1) gene is a brain specific gene that has been mostly studied in the context of olfactory development, although in a recent study, FEZF1 has been identified as one of the genes responsible for the development of Kallman syndrome...
November 13, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/29073129/receipt-of-selected-preventive-health-services-for-women-and-men-of-reproductive-age-united-states-2011-2013
#17
Karen Pazol, Cheryl L Robbins, Lindsey I Black, Katherine A Ahrens, Kimberly Daniels, Anjani Chandra, Anjel Vahratian, Lorrie E Gavin
PROBLEM/CONDITION: Receipt of key preventive health services among women and men of reproductive age (i.e., 15-44 years) can help them achieve their desired number and spacing of healthy children and improve their overall health. The 2014 publication Providing Quality Family Planning Services: Recommendations of CDC and the U.S. Office of Population Affairs (QFP) establishes standards for providing a core set of preventive services to promote these goals. These services include contraceptive care for persons seeking to prevent or delay pregnancy, pregnancy testing and counseling, basic infertility services for those seeking to achieve pregnancy, sexually transmitted disease (STD) services, and other preconception care and related preventive health services...
October 27, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/29066422/preliminary-findings-of-a-technology-delivered-sexual-health-promotion-program-for-black-men-who-have-sex-with-men-quasi-experimental-outcome-study
#18
Charles H Klein, Tamara Kuhn, Danielle Huxley, Jamie Kennel, Elizabeth Withers, Carmela G Lomonaco
BACKGROUND: Human immunodeficiency virus (HIV) disproportionately affects black men who have sex with men (MSM), yet there are few evidence-based interventions specifically designed for black MSM communities. In response, the authors created Real Talk, a technology-delivered, sexual health program for black MSM. OBJECTIVE: The objective of our study was to determine whether Real Talk positively affected risk reduction intentions, disclosure practices, condom use, and overall risk reduction sexual practices...
October 24, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/29058036/the-road-less-traveled-from-genotype-to-phenotype-in-flies-and-humans
#19
Robert R H Anholt, Trudy F C Mackay
Understanding how genomic variation gives rise to phenotypic variation is essential for elucidating mechanisms of adaptive evolution, plant and animal breeding, and precision medicine. However, identifying causal links between DNA sequence variants and variation in phenotypes is challenging in human populations, due to large blocks of linkage disequilibrium in the genome and heterogeneous developmental histories, lifestyles, and social and physical environments. Drosophila melanogaster presents a powerful genetic model, since linkage disequilibrium decays rapidly, facilitating assignment of causality to polymorphisms associated with phenotypic variation, and large numbers of individuals can be reared under defined environmental conditions, economically, and without regulatory restrictions...
October 20, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/29049523/oral-human-papillomavirus-infection-differences-in-prevalence-between-sexes-and-concordance-with-genital-human-papillomavirus-infection-nhanes-2011-to-2014
#20
Kalyani Sonawane, Ryan Suk, Elizabeth Y Chiao, Jagpreet Chhatwal, Peihua Qiu, Timothy Wilkin, Alan G Nyitray, Andrew G Sikora, Ashish A Deshmukh
Background: The burden of human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinoma (OPSCC) is disproportionately high among men, yet empirical evidence regarding the difference in prevalence of oral HPV infection between men and women is limited. Concordance of oral and genital HPV infection among men is unknown. Objective: To determine the prevalence of oral HPV infection, as well as the concordance of oral and genital HPV infection, among U.S...
October 17, 2017: Annals of Internal Medicine
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