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Sexual attraction

Nathan J Butterworth, Phillip G Byrne, Paul A Keller, James F Wallman
Cuticular hydrocarbons (CHCs) play an important role as contact pheromones in insects, particularly in flies. However, for many fly taxa our understanding of the importance of CHCs in sexual communication is limited. Within the family Calliphoridae (blowflies), sex-specific differences in CHCs have been reported for several species, but there is no evidence that CHCs facilitate sexual behavior. In order to elucidate the function of CHCs in Calliphoridae, studies combining behavioral and chemical analyses are required...
March 15, 2018: Journal of Chemical Ecology
Giuseppe Magistro, Philipp Weinhold, Christian G Stief, Christian Gratzke
PURPOSE OF REVIEW: The main objective of novel minimally invasive treatment options is to provide relief of bothersome lower urinary tract symptoms (LUTS) equally effective to current standard techniques, but with a more favorable safety profile. Here we present the first clinical experience with the prostatic urethral lift (Urolift) and the convective water vapor energy ablation (Rezūm). RECENT FINDINGS: Urolift offers rapid and durable relief of LUTS with complete preservation of sexual function...
March 13, 2018: Current Opinion in Urology
Matthew Quaife, Fern Terris-Prestholt, Robyn Eakle, Maria A Cabrera Escobar, Maggie Kilbourne-Brook, Mercy Mvundura, Gesine Meyer-Rath, Sinead Delany-Moretlwe, Peter Vickerman
INTRODUCTION: A number of antiretroviral HIV prevention products are efficacious in preventing HIV infection. However, the sexual and reproductive health needs of many women extend beyond HIV prevention, and research is ongoing to develop multi-purpose prevention technologies (MPTs) that offer dual HIV and pregnancy protection. We do not yet know if these products will be an efficient use of constrained health resources. In this paper, we estimate the cost-effectiveness of combinations of candidate multi-purpose prevention technologies (MPTs), in South Africa among general population women and female sex workers (FSWs)...
March 2018: Journal of the International AIDS Society
Christine Lembke, Daniel Stettin, Franziska Speck, Nico Ueberschaar, Sam De Decker, Wim Vyverman, Georg Pohnert
Recently the first pheromone of a marine diatom was identified to be the diketopiperazine (S,S)-diproline. This compound facilitates attraction between mating partners in the benthic diatom Seminavis robusta. Interestingly, sexualized S. robusta cells are attracted to both the natural pheromone (S,S)-diproline as well as to its enantiomer (R,R)-diproline. Usually stereospecificity is a prerequisite for successful substrate-receptor interactions, and especially pheromone perception is often highly enantioselective...
March 14, 2018: Journal of Chemical Ecology
Steven Arnocky
Ten years ago, Buss and Shackelford demonstrated that high mate value (i.e., physically attractive) women held more discerning mate preferences relative to lower mate value women. Since then, researchers have begun to consider the equally important role of men's sexual selectivity in human mate choice. Yet, little research has focused on whether high mate value men are similarly choosy in their mate preferences. In a sample of 139 undergraduate men, relationships between self-perceived mate value as well as female-rated facial attractiveness were examined in relation to men's expressed mate preferences...
January 2018: Evolutionary Psychology: An International Journal of Evolutionary Approaches to Psychology and Behavior
Christian Graugaard, Cecilie Dyg Sperling, Bibi Hølge-Hazelton, Kirsten A Boisen, Gitte Stentebjerg Petersen
OBJECTIVE: The negative impact of malignant disease on sexual and relational functioning is well-documented among adults, but scarcely investigated among adolescents and young adults. This study explored the body image, self-perceived attractiveness and sexual/romantic experiences of Danes diagnosed with cancer at the age of 15-29 years. It also aimed to clarify whether self-perceived needs for counseling were in fact met by health-care providers. METHODS: All Danes who had been diagnosed with cancer at the age of 15-29 years during the period 2009-2013 were included in a cross-sectional nationwide questionnaire study...
March 12, 2018: Psycho-oncology
Kelli A Fagan, Jintao Luo, Ross C Lagoy, Frank C Schroeder, Dirk R Albrecht, Douglas S Portman
Biological sex, a fundamental dimension of internal state, can modulate neural circuits to generate behavioral variation. Understanding how and why circuits are tuned by sex can provide important insights into neural and behavioral plasticity. Here we find that sexually dimorphic behavioral responses to C. elegans ascaroside sex pheromones are implemented by the functional modulation of shared chemosensory circuitry. In particular, the sexual state of a single sensory neuron pair, ADF, determines the nature of an animal's behavioral response regardless of the sex of the rest of the body...
March 3, 2018: Current Biology: CB
Sunil M Doshi, Kalpesh Zanzrukiya, Lavlesh Kumar
Paraphilic disorders range from nearly normal behaviour to a behaviour which may be considered as destructive or menacing to the society at large. In accordance with Diagnostic and Statistical Manual of Mental Disorders-V, the terms Paraphilia and Paraphilic disorders, denote different interpretations. Multiple paraphilias connected to childhood either directly or indirectly has been documented in scientific literature. Paraphilic Infantilism, Diaperism and Pedophilia constitute major portion among them. Paraphilic infantilism denotes paraphilic desire of being a baby...
March 2, 2018: Journal of Forensic and Legal Medicine
Michael Gold, Anneke Andriessen, Alexandros Bader, Red Alinsod, Elizabeth Shane French, Nathan Guerette, Yegor Kolodchenko, Michael Krychman, Susan Murrmann, Julene Samuels
INTRODUCTION: The use of energy-based devices for the treatment of vaginal laxity, orgasmic dysfunction, and stress incontinence, such as minimally ablative fractional laser and radiofrequency, is gaining momentum. This review aims to answer clinical questions on the application of energy-based devices for feminine genital rejuvenation. METHODS: The target group includes physicians involved in esthetic medicine and feminine genital rejuvenation. A literature review was conducted on technologies in use for feminine rejuvenation to explore their safety, efficacy, tolerability, patient satisfaction, and clinical usability...
March 10, 2018: Journal of Cosmetic Dermatology
Carolina Mondillo, María Luisa Varela, Adriana María Belén Abiuso, Ramiro Vázquez
Histamine (HA) is a pleiotropic biogenic amine synthesized exclusively by histidine decarboxylase (HDC) in most mammalian tissues. The literature on the role of HA within the male gonad has expanded over the last years, attracting attention to potential unexpected side-effects of anti-histamines on testicular function. In this regard, HA receptors (HRH1, HRH2 and HRH4) have been described in Leydig cells of different species, including human. Via these receptors, HA has been reported to trigger positive or negative interactions with the LH/hCG signaling pathway depending upon its concentration, thereby contributing to the local control of testicular androgen levels...
March 9, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
P E Mandelare, D A Adpressa, E N Kaweesa, L N Zakharov, S Loesgen
The genetically encoded, small-molecule chemical diversity of filamentous fungi is still largely unexplored and represents an attractive source for the discovery of new compounds. Here we report the production of new chlorinated bianthrones from coculture of two different developmental stages, or morphs, of a marine alga-derived Aspergillus alliaceus (teleomorph: Petromyces alliaceus) strain. The vegetative stage (asexual morph) can be separated from the morph that switched to sexual development (sclerotial morph); both produce distinct secondary metabolite patterns...
March 8, 2018: Journal of Natural Products
Patrick C Dolder, Petra Strajhar, Patrick Vizeli, Alex Odermatt, Matthias E Liechti
RATIONALE: Amphetamines are used as medications but are also misused as cognitive enhancers by healthy subjects and may have additional effects on social cognition. METHODS: We investigated the acute effects of single, high, equimolar doses of D-amphetamine (40 mg) and lisdexamfetamine (100 mg) on social cognition and cognitive performance using a randomized, placebo-controlled, double-blind, cross-over design in 24 healthy volunteers. Effects on social cognition were assessed using the Facial Emotion Recognition Task (FERT), Multifaceted Empathy Test (MET), and Sexual Arousal Task (SAT)...
February 9, 2018: Psychopharmacology
Carolina Alcala-Alezones, Theo G M Sandfort, Stephanie Serafino, Vasu Reddy
The label "men who have sex with men" (MSM) is used to categorize a diverse population exclusively on the basis of its sexual behavior. Understanding the diversity that this label comprises is critical for the development of health interventions that effectively reach the various populations subsumed under this label. In this cross-sectional study of South African MSM (N = 480) recruited through respondent-driven sampling (RDS), we explored differences between men who had sex with both men and women (MSMW) and men who had sex with men exclusively (MSME)...
March 5, 2018: Journal of Sex Research
M O Chacon, T H S Fonseca, S B V Oliveira, M A Alacoque, L L Franco, C A Tagliati, G D Cassali, G P Campos-Mota, R J Alves, L S A Capettini, Maria Aparecida Gomes
Trichomoniasis is the most common non-viral, sexually transmitted infection affecting humans worldwide. The main treatment for trichomoniasis is metronidazole (MTZ). However, adverse effects and reports of resistance have stimulated the development of therapeutic alternatives. The ease of manipulation of the side chains of MTZ coupled with its safety makes this molecule attractive for the development of new drugs. In this context, we evaluated the activity of the chlorinated MTZ derivative, MTZ-Cl, on sensitive and resistant strains of Trichomonas vaginalis...
March 3, 2018: Parasitology Research
Selena Zhong, Jayant M Pinto, Kristen E Wroblewski, Martha K McClintock
BACKGROUND: The sexual experience is shaped by sensory function; with aging, sensory dysfunction may interfere with sexuality and sexual behavior between partners. Specifically, older adults with age-related sensory dysfunction may have less sexual activity than those with better sensory function. In addition, since sexual desire and attraction rests in part upon sensory function, sensory dysfunction may also be associated with less sexual motivation. AIM: To test the association between sexual activity and motivation in older adults and their sensory dysfunction...
February 28, 2018: Journal of Sexual Medicine
Saskia Lehr, Juliane Vier, Georg Häcker, Susanne Kirschnek
The obligate intracellular bacterium Chlamydia trachomatis is the most common bacterial agent of sexually transmitted disease world-wide. Chlamydia trachomatis primarily infects epithelial cells of the genital tract but the infection may be associated with ascending infection. Infection-associated inflammation can cause tissue damage resulting in female infertility and ectopic pregnancy. The precise mechanism of inflammatory tissue damage is unclear but earlier studies implicate the chlamydial cryptic plasmid as well as responding neutrophils...
February 27, 2018: Microbes and Infection
Anita Murray, Rebecca A Dunlop, Michael J Noad, Anne W Goldizen
Male humpback whales produce a mating display called "song." Behavioral studies indicate song has inter- and/or intra-sexual functionality, suggesting song may be a multi-message display. Multi-message displays often include stereotypic components that convey group membership for mate attraction and/or male-male interactions, and complex components that convey individual quality for courtship. Humpback whale song contains sounds ("units") arranged into sequences ("phrases"). Repetitions of a specific phrase create a "theme...
February 2018: Journal of the Acoustical Society of America
Anders P Møller
Barn swallows Hirundo rustica have white spots on their tail feathers, and they have been hypothesized to be a handicap because white spots are prone to feather breakage, ectoparasites are disproportionately common in white spots, and size of white spots increases with tail length. Here I test for attractiveness of narrow and long tail spots by manipulation of their shape while using complete painting of spots and an absence of treatment as a control. Female barn swallows are known to differentially invest in reproduction when mated to attractive males...
October 2017: Current Zoology
Xiao Guo, Huifen Guo, Lei Zhao, Yao-Hua Zhang, Jian-Xu Zhang
Background: In rats, urine-borne male pheromones comprise organic volatile compounds and major urinary proteins (MUPs). A number of volatile pheromones have been reported, but no MUP pheromones have been identified in rat urine. Results: We used sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), isoelectric focusing electrophoresis (IEF), nano-liquid chromatography-tandem mass spectrometry (nLC-MS/MS) after in gel digestion of the proteins and quantitative real-time PCR (qRT - PCR) and showed that the levels of two MUPs, odorant - binding protein 3 (OBP3) (i...
2018: Frontiers in Zoology
Giuseppe Magistro, Christian G Stief, Henry H Woo
CONTEXT: Lower urinary tract symptoms (LUTS) are one of the most common benign conditions affecting aging men. Among surgical procedures, minimally invasive treatment options have emerged with the main objective to be at least equally effective as current standard techniques, but with a more favourable safety profile. OBJECTIVE: To present the technical principle for prostatic urethral lift (PUL) and review clinical outcomes. EVIDENCE ACQUISITION: Medline, PubMed, the Cochrane database, and Embase were screened for randomised controlled trials, clinical trials, and reviews on PUL...
February 20, 2018: European Urology Focus
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