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Female sexuality

Grace H Hwang, Jessica L Hopkins, Philip W Jordan
Chromatin spread techniques have been widely used to assess the dynamic localization of various proteins during gametogenesis, particularly for spermatogenesis. These techniques allow for visualization of protein and DNA localization patterns during meiotic events such as homologous chromosome pairing, synapsis and DNA repair. While a few protocols have been described in the literature, general chromatin spread techniques using mammalian prophase oocytes are limited and difficult due to the timing of meiosis initiation in fetal ovaries...
February 26, 2018: Journal of Visualized Experiments: JoVE
Brooke Y Kauffman, Lorra Garey, Daniel J Paulus, Charles Jardin, Andres G Viana, Clayton Neighbors, Michael J Zvolensky
OBJECTIVE: Extant work has documented the relationship between anxiety sensitivity (AS) and problematic alcohol-related behaviors. However, research on the underlying mechanisms may serve to better explain their association. METHOD: The present study tested the hypothesis that AS would exert an indirect effect on alcohol-related behaviors through negative urgency among a sample of 507 college students (74.4% female; mean age = 22.07 years; SD = 3.83; age range: 18-47 years) who reported at least one heavy episodic drinking (HED) event in the previous month and at least one lifetime sexual partner...
March 2018: Journal of Studies on Alcohol and Drugs
Aisha Nazli, Sara Dizzell, Muhammad Atif Zahoor, Victor H Ferreira, Jessica Kafka, Matthew William Woods, Michel Ouellet, Ali A Ashkar, Michel J Tremblay, Dawn Me Bowdish, Charu Kaushic
More than 40% of HIV infections occur via female reproductive tract (FRT) through heterosexual transmission. Epithelial cells that line the female genital mucosa are the first line of defense against HIV-1 and other sexually transmitted pathogens. These sentient cells recognize and respond to external stimuli by induction of a range of carefully balanced innate immune responses. Previously, we have shown that in response to HIV-1 gp120, the genital epithelial cells (GECs) from upper reproductive tract induce an inflammatory response that may facilitate HIV-1 translocation and infection...
March 19, 2018: Cellular & Molecular Immunology
Laura C D Pomatto, Sarah Wong, John Tower, Kelvin J A Davies
Adaptive homeostasis enables rapid cellular signaling, leading to transcriptional and translational modifications (Davies, 2016) [1]. The Proteasome is one of the main cellular proteolytic enzymes that plays an essential role in the rapid clearance of oxidatively damaged cellular proteins, and is highly responsive to oxidative stress. Upon exposure to even very low, signaling levels of oxidants, the predominant form of the Proteasome becomes the ATP-independent 20S proteasome that enables rapid clearance of damaged proteins...
April 2018: Data in Brief
Lucine Vuitton, Elise Jacquin, Anne-Laure Parmentier, Elise Crochet, Francine Fein, Anne-Claire Dupont-Gossart, Laurianne Plastaras, Charles-Henri Bretagne, Frédéric Mauny, Stéphane Koch, Jean-Luc Prétet, Christiane Mougin, Séverine Valmary-Degano
BACKGROUND & AIMS: The increasing incidence of anal canal carcinomas requires better knowledge on anal human papillomavirus (HPV) infection. We aimed to assess anal canal HPV infection prevalence and risk factors among patients seen at a gastroenterology department in France. METHODS: We analyzed anal tissue samples collected from 469 consecutive patients (median age 54 years, 52% women), including 112 who received immunosuppressant therapies and 101 with inflammatory bowel disease (70 with Crohn's disease), who underwent colonoscopy examinations from April 1, 2012 to April 30, 2015...
March 15, 2018: Clinical Gastroenterology and Hepatology
Matthew J Paul, Clemens K Probst, Lauren M Brown, Geert J de Vries
Alongside the development of sexual characteristics and reproductive competence, adolescents undergo marked cognitive, social, and emotional development [1]. A fundamental question is whether these changes are triggered by activation of the hypothalamic-pituitary-gonadal (HPG) axis at puberty (puberty dependent) or whether they occur independently of HPG activation (puberty independent). Disentangling puberty-dependent from puberty-independent mechanisms is difficult because puberty and adolescence typically proceed concurrently...
March 6, 2018: Current Biology: CB
Jerel P Calzo, S Bryn Austin, Nadia Micali
Much of the research on sexual orientation disparities in eating disorder behaviors has been conducted in the USA, Canada, and Australia. Data on the associations of sexual orientation and eating disorder symptoms among adolescents in the UK are lacking. Participants were children from the Avon Longitudinal Study of Parents and Children, a youth cohort born 1991-1992 (n = 5048; 53% female; 12% sexual minority). Sexual orientation was assessed at 16 years. Eating disorder symptoms were assessed at 14 and 16 years...
March 17, 2018: European Child & Adolescent Psychiatry
Friederike Gethöffer, Christiane Pfarrer, Ursula Siebert
Research on reproduction and fertility is an essential fundament of management strategies in European wild boar. Concerning the examination of the reproductive tract, methods still lack conformity and comparability. So far the reproductive status of female wild boar has been assessed by ovarian macroscopic examination. In order to find out if this is a valid method, 21 ovaries of 8-34 months old animals covering (early) follicular phase and cyclic inactivity were evaluated microscopically. Number and dimension of follicles as well as the occurrence of atretic follicles were compared and related to age, weight, ovary weight and size of ovary...
March 2, 2018: Theriogenology
Adriana Maggi, Sara Della Torre
BACKGROUND: Epidemiological and clinical studies have largely demonstrated major differences in the prevalence of metabolic disorders in males and females, but the biological cause of these dissimilarities remain to be elucidated. Mammals are characterized by a major change in reproductive strategies and it is conceivable that these changes subjected females to a significant evolutionary pressure that perfected the coupling between energy metabolism and reproduction. SCOPE OF REVIEW: This review will address the plausibility that female liver functions diverged significantly from males given the role of liver in the control of metabolism...
February 27, 2018: Molecular Metabolism
Don C Des Jarlais, Courtney McKnight, Jonathan Feelemyer, Kamyar Arasteh, Susan Tross, Aimee N C Campbell, Hannah L F Cooper, David C Perlman
BACKGROUND: We examined whether sex disparities (heterosexual male:female) in HIV infection continue to persist at the "end of the HIV epidemic" among persons who inject drugs (PWID) in New York City (NYC). An "end of the epidemic" was operationally defined as 1) prevalence of untreated HIV infection <5%, and 2) estimated HIV incidence <0.5/100 person-years. METHODS: PWID were recruited from persons entering substance use treatment programs at Mount Sinai Beth Israel in 2001-2005 and 2011-2015...
February 23, 2018: Drug and Alcohol Dependence
Cari Jo Clark, Gemma Ferguson, Binita Shrestha, Prabin Nanicha Shrestha, J Michael Oakes, Jhumka Gupta, Susi McGhee, Yuk Fai Cheong, Kathryn M Yount
Social norms increasingly are the focus of intimate partner violence (IPV) prevention strategies but are among the least examined contextual factors in quantitative violence research. This study assesses the within-community, between-community, and contextual effect of a new measure of social norms (PVNS: Partner Violence Norms Scale) on women's risk of IPV. Data come from baseline surveys collected from 1435 female, married, reproductive-age participants, residing in 72 wards in three districts (Chitwan, Kapilvastu, Nawalparasi) in Nepal who were enrolled in a cluster randomized trial testing the impact of a social behavioral change communication intervention designed to prevent IPV...
February 26, 2018: Social Science & Medicine
Bjorn Bohman, Amir Karton, Gavin R Flematti, Adrian Scaffidi, Rod Peakall
Sexually deceptive orchids attract specific pollinators by mimicking insect sex pheromones. Normally this mimicry is very specific and identical compounds have been identified from orchids and matching females of the pollinators. In this study, we conduct a detailed structure-activity investigation on isomers of the semiochemicals involved in the sexual attraction of the male pollinator of the spider orchid Caladenia plicata. This orchid employs an unusual blend of two biosynthetically unrelated compounds, (S)-β-citronellol and 2-hydroxy-6-methylacetophenone, to lure its Zeleboria sp...
March 17, 2018: Journal of Chemical Ecology
I Nikas, A Hapfelmeier, M Mollenhauer, D Angermeier, M Bettstetter, R Götz, M Schmidmayr, V Seifert-Klauss, A Muckenhuber, U Schenck, Gregor Weirich
Pathogenic microbes may colonize the female genital tract via sexual transmission and cause health issues like inflammation or malignancy, summarized as sexually transmitted disease (STD). A major representative of such pathogens is Trichomonas vaginalis (T.v.), whose role in the etiology of cervical cancer remains elusive. Traditional morphologic screening of cervical smears is able to detect T.v., although its identification may be complicated by look-alikes such as degenerated granulocytes and basal cells...
March 17, 2018: Parasitology Research
Margherita Ruoppolo, Marianna Caterino, Lucia Albano, Rita Pecce, Maria Grazia Di Girolamo, Daniela Crisci, Michele Costanzo, Luigi Milella, Flavia Franconi, Ilaria Campesi
Sex differences affect several diseases and are organ-and parameter-specific. In humans and animals, sex differences also influence the metabolism and homeostasis of amino acids and fatty acids, which are linked to the onset of diseases. Thus, the use of targeted metabolite profiles in tissues represents a powerful approach to examine the intermediary metabolism and evidence for any sex differences. To clarify the sex-specific activities of liver, heart and kidney tissues, we used targeted metabolomics, linear discriminant analysis (LDA), principal component analysis (PCA), cluster analysis and linear correlation models to evaluate sex and organ-specific differences in amino acids, free carnitine and acylcarnitine levels in male and female Sprague-Dawley rats...
March 16, 2018: Scientific Reports
Sa Geng, Ayano Miyagi, James G Umen
Volvocine algae comprise a unique comparative model for investigating the evolution of distinct male and female sexes (oogamy) from an isogamous ancestral state with mating types. The mating-type or sex-determining gene MID encodes a putative RWP-RK family transcription factor, and orthologs of MID are present throughout the volvocine algal lineage in either the MT- or male mating locus of dioecious species. It was previously found that ectopic expression of isogamous Chlamydomonas reinhardtii MID ( CrMID ) in a C...
March 16, 2018: Development
Jessica M West, Matthew Klukowski
Seasonal changes in glucocorticoids and their influence on the immune system are widespread in vertebrates, but whether this occurs in lesser studied taxa like turtles is unclear. The purpose of this study was to test for seasonal changes in baseline corticosterone (CORT), innate immunity, body condition, and metabolic factors (triglycerides, uric acid) in free-ranging Eastern Box Turtles (Terrapene carolina carolina), a species which is in decline across its range. In addition, the effect of handling and confinement on CORT levels was measured...
March 13, 2018: General and Comparative Endocrinology
Azucena Muñoz-Ramírez, Aracely López-Monteon, Angel Ramos-Ligonio, Enrique Méndez-Bolaina, Mario R B Guapillo-Vargas
Female sex workers (FSWs) have been considered a key population for sexually transmitted infections (STIs); therefore, they are periodically screened as a requirement to obtain a work card. However, there is insufficient epidemiological data on STIs among FSWs in Mexico. The detection of Trichomonas vaginalis is limited to microscopic studies and the molecular screening of Human papillomavirus (HPV) is only done to women 35 years of age and older. The objective of this study was to determine the prevalence of T...
March 13, 2018: Revista Argentina de Microbiología
Thomas W Gaither, Mohannad A Awad, Gregory P Murphy, Ian Metzler, Thomas Sanford, Michael L Eisenberg, Siobhan Sutcliffe, E Charles Osterberg, Benjamin N Breyer
BACKGROUND: Bicycle riding has become an increasingly popular mode of transportation and exercise, especially among women, and previous studies have demonstrated a relationship between cycling and sexual dysfunction, albeit using non-validated questionnaires. AIM: We aimed to explore the relationship between cycling and sexual and urinary dysfunction. METHODS: Cyclists were recruited to complete a survey through Facebook advertisements and outreach to sporting clubs across 5 English-speaking countries...
March 6, 2018: Journal of Sexual Medicine
Lara M Wierenga, Marieke G N Bos, Elisabeth Schreuders, Ferdi Vd Kamp, Jiska S Peper, Christian K Tamnes, Eveline A Crone
The onset of adolescence in humans is marked by hormonal changes that give rise to secondary sexual characteristics, noted as puberty. It has, however, proven challenging to unravel to what extent pubertal changes may have organizing effects on the brain beyond chronological age, as reported in animal studies. The present longitudinal study aimed to characterize the unique effects of age and puberty on subcortical brain volumes and included three waves of data collection at two-year intervals and 680 T1-weighted MRI scans of 271 participants (54% females) aged between 8 and 29 years old...
March 8, 2018: Psychoneuroendocrinology
Bimala Sharma, Eun Woo Nam
This study aimed to assess the prevalence and correlates of condom use at last sexual intercourse among people aged 15-49 years in Nepal. Secondary data analysis was performed using the Nepal Demographic and Health Survey 2011. The study was restricted to the respondents who reported ever having had sexual intercourse; 9843 females and 3017 males were included. Condom use was assessed by asking if respondents used condoms in their most recent sexual intercourse. Chi-square test and multivariate logistic regression analysis were performed using Complex Sample Analysis Procedure to adjust for sample weight and multistage sampling design...
March 16, 2018: International Journal of Environmental Research and Public Health
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