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Sexual selection

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https://www.readbyqxmd.com/read/28346770/a-core-outcome-set-for-localised-prostate-cancer-effectiveness-trials
#1
Steven MacLennan, Paula R Williamson, Hanneke Bekema, Marion Campbell, Craig Ramsay, James N'Dow, Sara MacLennan, Luke Vale, Philipp Dahm, Nicolas Mottet, Thomas Lam, Paul Abel, Hashim U Ahmed, Gary Akehurst, Robert Almquist, Karl Beck, David Budd, Steven Canfield, James Catto, Philip Cornford, William Cross, Alexander Ewen, Judith Grant, Rakesh Heer, David Hurst, Rob Jones, Roger Kockelbergh, Andrew Mackie, Graham MacDonald, Alan McNeill, Malcolm Mason, Sam McClinton, Duncan McLaren, Hugh Mostafid, Ian Pearce, Linda Pennet, Justine Royle, Hans Schreuder, Grant D Stewart, Henk van der Poel, Kevin Wardlaw, Thomas Wiegel
OBJECTIVE: To develop a core outcome set (COS) applicable for effectiveness trials of all interventions for localised prostate cancer. BACKGROUND: Many treatments exist for localised prostate cancer, although it is unclear which offers the optimal therapeutic ratio. This is confounded by inconsistencies in the selection, definition, measurement and reporting of outcomes in clinical trials. SUBJECTS AND METHODS: A list of 79 outcomes was derived from a systematic review of published localised prostate cancer effectiveness studies and semi-structured interviews with 15 prostate cancer patients...
March 27, 2017: BJU International
https://www.readbyqxmd.com/read/28345264/blood-transcriptomes-and-de-novo-identification-of-candidate-loci-for-mating-success-in-lekking-great-snipe-gallinago-media
#2
Jacob Höglund, Biao Wang, Stein Are Saether, Mozes Pil Kyu Blom, Peder Fiske, Peter Halvarsson, Gavin J Horsburgh, Terry Burke, John Atle Kålås, Robert Ekblom
We assembled the great snipe blood transcriptome using data from fourteen lekking males, in order to de novo identify candidate genes related to sexual selection, and determined the expression profiles in relation to mating success. The three most highly transcribed genes were encoding different haemoglobin subunits. All tended to be overexpressed in males with high mating success. We also called Single Nucleotide Polymorphisms (SNPs) from the transcriptome data and found considerable genetic variation for many genes expressed during lekking...
March 27, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28345039/female-brain-size-affects-the-assessment-of-male-attractiveness-during-mate-choice
#3
Alberto Corral-López, Natasha I Bloch, Alexander Kotrschal, Wouter van der Bijl, Severine D Buechel, Judith E Mank, Niclas Kolm
Mate choice decisions are central in sexual selection theory aimed to understand how sexual traits evolve and their role in evolutionary diversification. We test the hypothesis that brain size and cognitive ability are important for accurate assessment of partner quality and that variation in brain size and cognitive ability underlies variation in mate choice. We compared sexual preference in guppy female lines selected for divergence in relative brain size, which we have previously shown to have substantial differences in cognitive ability...
March 2017: Science Advances
https://www.readbyqxmd.com/read/28341756/distress-disease-desire-perspectives-on-the-medicalisation-of-premature-ejaculation
#4
Ylva Söderfeldt, Adam Droppe, Tim Ohnhäuser
The discovery that certain selective serotonin reuptake inhibitors delay ejaculation and the later development and approval of dapoxetine as an on-demand treatment option has led to a dramatic increase in medical interest in premature ejaculation. This paper analyses the diagnostic criteria and the discussion within the medical community about suitable treatments against the backdrop of theories of science, sex and gender. Our conclusion is that the diagnosis itself and the suggested treatments contribute to normative models of sexual conduct and therefore reinforce the norms that cause patients' distress over ejaculating 'too soon'...
March 23, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28340908/preparing-the-united-states-for-zika-virus-pre-emptive-vector-control-and-personal-protection
#5
EDITORIAL
James H Diaz
Discovered in 1947 in a monkey in the Zika forest of Uganda, Zika virus was dismissed as a cause of a mild illness that was confined to Africa and Southeast Asia and transmitted by Aedes mosquitoes. In 2007, Zika virus appeared outside of its endemic borders in an outbreak on the South Pacific Island of Yap. In 2013, Zika virus was associated with a major neurological complication, Guillain-Barré syndrome, in a larger outbreak in the French Polynesian Islands. From the South Pacific, Zika invaded Brazil in 2015 and caused another severe neurological complication, fetal microcephaly...
December 2016: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28339706/differential-proliferation-and-metabolic-activity-of-sertoli-cells-in-the-testes-of-broiler-and-layer-breeder-chickens
#6
Mélanie Faure, Edith Guibert, Sabine Crochet, Pascal Chartrin, Jean-Pierre Brillard, Anne Collin, Pascal Froment
Decades of genetic selection have generated 2 different, highly specialized types of chickens in which 1 type, known as the layer-type chicken, expresses high laying performance while the other type, known as the broiler-type chicken, is dedicated to the production of fast-growing birds. Selected lines for the latter type often express disorders in their reproductive performance including early sexual maturation and accelerated, non-reversible seasonal decline of their semen production and mating behavior. The aim of the present study was to characterize some metabolic markers of the Sertoli cell populations...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28338192/application-of-percutaneous-epididymal-sperm-aspiration-in-azoospermia
#7
L Hao, Z-G Li, H-G He, Z-G Zhang, J-J Zhang, Y Dong, Z-B Li, C-H Han
OBJECTIVE: The present study introduces the application of percutaneous epididymal sperm aspiration (PESA) for diagnosis of obstructive azoospermia and non-obstructive azoospermia. PATIENTS AND METHODS: 96 cases diagnosed with azoospermia were selected, standard methods were used to measure testicular volume, chemiluminescence was used to test serum sexual hormone levels, and No. 7 butterfly needles were applied to puncture the head of the epididymis and aspirate epididymal luminal fluid...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28335876/child-abuse-neural-structure-and-adolescent-psychopathology-a-longitudinal-study
#8
Daniel S Busso, Katie A McLaughlin, Stephanie Brueck, Matthew Peverill, Andrea L Gold, Margaret A Sheridan
OBJECTIVE: Child abuse exerts a deleterious impact on a broad array of mental health outcomes. However, the neurobiological mechanisms that mediate this association remain poorly characterized. Here, we use a longitudinal design to prospectively identify neural mediators of the association between child abuse and psychiatric disorders in a community sample of adolescents. METHOD: Structural magnetic resonance imaging (MRI) data and assessments of mental health were acquired for 51 adolescents (aged 13-20; M=16...
April 2017: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/28334962/exposure-to-fictional-medical-television-and-health-a-systematic-review
#9
Beth L Hoffman, Ariel Shensa, Charles Wessel, Robert Hoffman, Brian A Primack
Fictional medical television programs have long been a staple of television programming, and they remain popular today. We aimed to examine published literature assessing the influence of medical television programs on health outcomes. We conducted systematic literature searches in PubMed, PsychINFO and CINAHL. Selected studies had to be scholarly research, to involve exposure to fictionalized medical television programming, and to assess associations between exposures and outcomes. Of 3541 unique studies identified, nineteen met selection criteria...
March 14, 2017: Health Education Research
https://www.readbyqxmd.com/read/28333336/comparative-sperm-proteomics-in-mouse-species-with-divergent-mating-systems
#10
Alberto Vicens, Kirill Borziak, Timothy L Karr, Eduardo R S Roldan, Steve Dorus
Sexual selection is the pervasive force underlying the dramatic divergence of sperm form and function. Although it has been demonstrated that testis gene expression evolves rapidly, exploration of the proteomic basis of sperm diversity is in its infancy. We have employed a whole-cell proteomics approach to characterize sperm divergence among closely related Mus species that experience different sperm competition regimes and exhibit pronounced variation in sperm energetics, motility and fertilization capacity...
February 25, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28332613/hunting-promotes-spatial-reorganization-and-sexually-selected-infanticide
#11
M Leclerc, S C Frank, A Zedrosser, J E Swenson, F Pelletier
Harvest can affect the ecology and evolution of wild species. The removal of key individuals, such as matriarchs or dominant males, can disrupt social structure and exacerbate the impact of hunting on population growth. We do not know, however, how and when the spatiotemporal reorganization takes place after removal and if such changes can be the mechanism that explain a decrease in population growth. Detailed behavioral information from individually monitored brown bears, in a population where hunting increases sexually selected infanticide, revealed that adult males increased their use of home ranges of hunter-killed neighbors in the second year after their death...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331250/sexual-behavior-hiv-prevalence-and-awareness-among-wives-of-migrant-workers-results-from-cross-sectional-survey-in-rural-north-india
#12
Alok Ranjan, Tarun Bhatnagar, Giridhara R Babu, Roger Detels
BACKGROUND: Migration has been linked to the spread of HIV epidemic from the urban areas of western India to the rural areas of north India. OBJECTIVES: This is the first population-based study among the wives of migrant workers of Muzaffarpur district in Bihar with objectives to describe their sexual behavior within marriage, estimate the prevalence of HIV, and to know their awareness regarding HIV/AIDS. METHODS: A two-stage cluster survey was conducted by randomly selecting 25 eligible wives from each of the 34 selected villages...
January 2017: Indian Journal of Community Medicine
https://www.readbyqxmd.com/read/28330465/the-impact-of-non-response-bias-due-to-sampling-in-public-health-studies-a-comparison-of-voluntary-versus-mandatory-recruitment-in-a-dutch-national-survey-on-adolescent-health
#13
Kei Long Cheung, Peter M Ten Klooster, Cees Smit, Hein de Vries, Marcel E Pieterse
BACKGROUND: In public health monitoring of young people it is critical to understand the effects of selective non-response, in particular when a controversial topic is involved like substance abuse or sexual behaviour. Research that is dependent upon voluntary subject participation is particularly vulnerable to sampling bias. As respondents whose participation is hardest to elicit on a voluntary basis are also more likely to report risk behaviour, this potentially leads to underestimation of risk factor prevalence...
March 23, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28329934/-hiv-infection-and-associated-factors-in-hiv-antibody-positive-clients-of-female-sex-workers-recently-reported-in-shaanxi-province
#14
T Hu, W H Chang, M Y Zhang
Objective: To investigate the current status of HIV infection and the related factors in HIV antibody positive clients of female sex workers (FSWs) recently reported in Shaanxi province. Methods: The HIV/AIDS cases newly diagnosed in males living in Shaanxi from January 1th of 2013 to June 30th of 2014 were selected and those infected through " commercial heterosexual behavior" were identified. The information about their demographic characteristics, previous unprotected heterosexual sex and the sample sources were collected, and serum or plasma samples were collected from them and tested with BED-CEIA...
March 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28328628/unilateral-versus-bilateral-breast-reconstruction-is-less-really-more
#15
Lauren V Kuykendall, Bugra Tugertimur, Corin Agoris, Sara Bijan, Ambuj Kumar, Deniz Dayicioglu
OBJECTIVE: Over the recent years, there has been an increase in prophylactic mastectomies with an associated increase in bilateral breast reconstruction. We aimed to compare outcomes in terms of patient satisfaction with unilateral versus bilateral breast reconstruction after deep inferior epigastric perforator (DIEP) flap and implant-based reconstruction. METHODS: Patients who underwent breast reconstruction by a single surgeon between July 2011 and July 2015 were surveyed using the independently validated BREAST-Q questionnaire...
March 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28328169/student-nurses-competence-in-sexual-health-care-a-literature-review
#16
REVIEW
Emma Pascale Blakey, Helen Aveyard
AIM: The aim of this literature review is to explore the way in which sexual health care is perceived and experienced by students in clinical practice. BACKGROUND: Student nurses understand the need to learn about sexual health but report a variety of learning needs and experience challenges acquiring skills to deliver such care in part due to varied clinical experience. Furthermore, there is a paucity of data exploring clinical competence of sexual health care among student nurses...
March 22, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28325880/balancing-selection-maintains-polymorphisms-at-neurogenetic-loci-in-field-experiments
#17
Eija Lonn, Esa Koskela, Tapio Mappes, Mikael Mokkonen, Angela M Sims, Phillip C Watts
Most variation in behavior has a genetic basis, but the processes determining the level of diversity at behavioral loci are largely unknown for natural populations. Expression of arginine vasopressin receptor 1a (Avpr1a) and oxytocin receptor (Oxtr) in specific regions of the brain regulates diverse social and reproductive behaviors in mammals, including humans. That these genes have important fitness consequences and that natural populations contain extensive diversity at these loci implies the action of balancing selection...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28324834/ivermectin-alters-reproductive-success-body-condition-and-sexual-trait-expression-in-dung-beetles
#18
Daniel González-Tokman, Imelda Martínez M, Yesenia Villalobos-Ávalos, Roberto Munguía-Steyer, María Del Rosario Ortiz-Zayas, Magdalena Cruz-Rosales, Jean-Pierre Lumaret
Ivermectin is a very common parasiticide used in livestock. It is excreted in the dung and has negative effects on survival and reproduction of dung-degrading organisms, including dung beetles. Here we exposed the dung beetle Euoniticellus intermedius to different concentrations of ivermectin in the food and evaluated reproductive success and the expression of traits associated with survival and reproduction under laboratory conditions. It is the first time the effects of ivermectin were evaluated on offspring physiological condition and the expression of a secondary sexual trait...
March 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28323193/spread-of-a-new-c-trachomatis-variant-from-men-who-have-sex-with-men-to-the-heterosexual-population-after-the-replacement-and-recombination-in-ompa-and-pmph-genes
#19
Mario Rodríguez-Domínguez, José María González-Alba, Teresa Puerta, Laura Martínez-García, Blanca Menéndez, Rafael Cantón, Jorge Del Romero, Juan Carlos Galán
OBJECTIVES: Sexually transmitted infections are frequently related to outbreaks in high-risk populations due to the dense sexual networks. We wanted to determine the dissemination of a C. trachomatis variant characterized by pmpH-recombinant gene between L and G genotypes, which was previously described in a high-risk population. METHODS: 449 samples were analysed in two periods ranging from 2009-2015 for detection of pmpH-recombinant gene. For those samples yielding positive amplification, a sampling was selected for phylogenetic reconstructions based on sequencing of five chromosomal genes...
March 18, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28321467/-sexual-dysfunction-associated-with-psychotropic-drugs-and-treatment-options
#20
M Berner
BACKGROUND: Sexual dysfunction associated with psychotropic drugs is a threat to patient quality of life and a major reason for non-compliance. Psychotropic agents can impair the sexual response in different ways due to their neurobiological mode of action. OBJECTIVE: Presentation of the frequencies of sexual functional disorders for selected psychopharmacological groups and the available treatment modalities. METHODS: Literature search, selection and review of relevant studies...
March 20, 2017: Der Nervenarzt
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