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https://www.readbyqxmd.com/read/28934203/development-of-rat-female-genital-cortex-and-control-of-female-puberty-by-sexual-touch
#1
Constanze Lenschow, Johanna Sigl-Glöckner, Michael Brecht
Rat somatosensory cortex contains a large sexually monomorphic genital representation. Genital cortex undergoes an unusual 2-fold expansion during puberty. Here, we investigate genital cortex development and female rat sexual maturation. Ovariectomies and estradiol injections suggested sex hormones cause the pubertal genital cortex expansion but not its maintenance at adult size. Genital cortex expanded by thalamic afferents invading surrounding dysgranular cortex. Genital touch was a dominant factor driving female sexual maturation...
September 2017: PLoS Biology
https://www.readbyqxmd.com/read/28930519/divergent-impact-of-gender-in-advancement-of-liver-injuries-diseases-and-carcinogenesis
#2
Subhrajit Biswas, Sampa Ghose
Several investigations have revealed that liver diseases exhibit gender biases, but identifying the root causes of such biases has been challenging. Evidence of gender differences in liver function is present from the early stage of embryonic development. The differences in access to care and treatment as well as diagnostic deliberation may affect gender-specific differences in liver disease progression. Apart from the pathogenesis, xenobiotic metabolism, immune responses, gene expressions, mitochondrial function, lipid composition, and enzyme activities also differ in this sexually dimorphic organ...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28927333/vulnerability-to-psychogenic-non-epileptic-seizures-is-linked-to-low-neuropeptide-y-levels
#3
Michael Winterdahl, Alessandro Miani, Moana J H Vercoe, Antonia Ciovica, Lori Uber-Zak, Charlotte Ulrikka Rask, Paul J Zak
Psychogenic non-epileptic seizures (PNES) is a conversion disorder that reflects underlying psychological distress. Female patients with PNES often present with a history of prolonged stressors, especially sexual abuse. In the current study, we studied the relationship between neuropeptide Y (NPY) and PNES symptoms in women with a history of sexual abuse. NPY has been associated with resilience to stress and we hypothesized that low levels would increase the extent and severity of PNES symptoms in this patient population...
September 19, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28923720/rosa-damascena-oil-improved-methadone-related-sexual-dysfunction-in-females-with-opioid-use-disorder-under-methadone-maintenance-therapy-%C3%A2-results-from-a-double-blind-randomized-and-placebo-controlled-trial
#4
Vahid Farnia, Faeze Tatari, Mostafa Alikhani, Katayoun Yazdchi, Moshen Taghizadeh, Dena Sadeghi Bahmani, Hassan Karbasizadeh, Edith Holsboer-Trachsler, Serge Brand
BACKGROUND: Methadone maintenance therapy (MMT) is provided to patients with opioid use disorder (OUD). However, as with all opioids, methadone impacts negatively on sexual function. To counter this, Rosa Damascena oil (RDO) has been used successfully for opioid-dependent male patients under MMT and with methadone-related sexual dysfunction (MRSD). In the present study, we tested the possible influence of RDO on sexual function and sex hormones of opioid-dependent female patients undergoing MMT and with MRSD...
August 16, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28923180/menopause-in-latin-america-symptoms-attitudes-treatments-and-future-directions-in-costa-rica
#5
REVIEW
T D Locklear, B J Doyle, A L Perez, S M Wicks, G B Mahady
Similar to their US counterparts, Costa Rican women enter menopause at ∼50 years of age, have similar symptoms, including hot flashes and night sweats, as well as an overall negative attitude toward the menopausal transition. One study of rural women in Monteverde reported that women knew little about the menopausal transition, as the subject was not discussed. Similar to other Latin American women, the use of hormone therapy by Costa Rican women is low and instead they use alternative therapies, including massage, dietary changes and herbal medicines...
October 2017: Maturitas
https://www.readbyqxmd.com/read/28919559/adipokinetic-hormone-receptor-gene-identification-and-its-role-in-triacylglycerol-mobilization-and-sexual-behavior-in-the-oriental-fruit-fly-bactrocera-dorsalis
#6
Qiu-Li Hou, Er-Hu Chen, Hong-Bo Jiang, Dan-Dan Wei, Shun-Hua Gui, Jin-Jun Wang, Guy Smagghe
Energy homeostasis requires continuous compensation for fluctuations in energy expenditure and availability of food resources. In insects, energy mobilization is under control of the adipokinetic hormone (AKH) where it is regulating the nutritional status by supporting the mobilization of lipids. In this study, we characterized the gene coding for the AKH receptor (AKHR) and investigated its function in the oriental fruit fly (Bactrocera dorsalis) that is economically one of the most important pest insects of tropical and subtropical fruit...
September 15, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28915869/frequency-and-genotypes-of-chlamydia-trachomatis-in-patients-attending-the-obstetrics-and-gynecology-clinics-in-jalisco-mexico-and-correlation-with-sociodemographic-behavioral-and-biological-factors
#7
Néstor Casillas-Vega, Rayo Morfín-Otero, Santos García, Jorge Llaca-Díaz, Eduardo Rodríguez-Noriega, Adrián Camacho-Ortiz, Ma de la Merced Ayala-Castellanos, Héctor J Maldonado-Garza, Jesús Ancer-Rodríguez, Guadalupe Gallegos-Ávila, Alberto Niderhauser-García, Elvira Garza-González
BACKGROUND: Chlamydia trachomatis is the causative agent of the most common bacterial sexually transmitted infection worldwide. The aim of this study was to investigate the frequency and genotypes of C. trachomatis in patients attending an obstetrics and gynecology clinic in Jalisco, Mexico and correlates them with sociodemographic, behavioral, and biological factors. METHODS: C. trachomatis detection was performed in endocervical samples from 662 patients by direct fluorescence assay (DFA) and two PCR assays that amplified the phospholipase D endonuclease superfamily protein (PLDESP) and OmpA genes...
September 15, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28912255/sex-hormones-and-the-development-of-sexual-size-dimorphism-dihydrotestosterone-inhibits-growth-in-a-female-larger-lizard-sceloporus-undulatus
#8
Nicholas B Pollock, Stephanie Feigin, Marko Drazenovic, Henry B John-Alder
Sexual differences in adult body size (sexual size dimorphism; SSD) and color (sexual dichromatism) are widespread, and both male- and female-biased dimorphisms are observed even among closely related species. A growing body of evidence indicates testosterone (T) can regulate growth, thus the development of SSD, and sexual dichromatism. However, the mechanism(s) underlying these effects are conjectural, including possible conversions of T to estradiol (E2) or 5 α-dihydrotestosterone (DHT). In the present study, we hypothesized that effects of T are physiological responses mediated by androgen receptors, and we tested two specific predictions: 1) that DHT would mimic effects of T by inhibiting growth and enhancing coloration, and 2) that removal of endogenous T via surgical castration would stimulate growth...
September 14, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28912031/hormones-and-the-coolidge-effect
#9
REVIEW
Elisa Ventura-Aquino, Alonso Fernández-Guasti, Raúl G Paredes
The Coolidge effect is the renewal of sexual behavior after the presentation of a novel sexual partner and possibly occurs as the result of habituation and dishabituation processes. This re-motivation to copulate is well studied in males and is commonly related to sexual satiety, which involves several neurobiological changes in steroid receptors and their mRNA expression in the CNS. On the other hand, there are few reports studying sexual novelty in females and have been limited to behavioral aspects. Here we report that the levels of rat proceptive behavior, a sign of sexual motivation, declines after 4 h of continuous mating, particularly in females that were unable to regulate the time of mating...
September 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28903904/insights-of-sex-determination-and-differentiation-from-medaka-as-a-teleost-model
#10
Yi Kang, Gui-Jun Guan, Yun-Han Hong
The mechanisms of sex determination and differentiation in fish are highly divergent with a broad range of gonadal differentiation types from hermaphroditism to gonochorism. Multiple triggers regulate the process of sexual differentiation including genetic or environmental factors (temperature, light, hormones and/or pH value, etc.). In recent years, with the advances of molecular technologies and genetic engineering approaches, there are significant breakthroughs in identifying the master genes of vertebrate sex determination and differentiation...
June 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28895797/neuroendocrine-disruption-of-organizational-and-activational-hormone-programming-in-poikilothermic-vertebrates
#11
REVIEW
Cheryl S Rosenfeld, Nancy D Denslow, Edward F Orlando, Juan Manuel Gutierrez-Villagomez, Vance L Trudeau
In vertebrates, sexual differentiation of the reproductive system and brain is tightly orchestrated by organizational and activational effects of endogenous hormones. In mammals and birds, the organizational period is typified by a surge of sex hormones during differentiation of specific neural circuits; whereas activational effects are dependent upon later increases in these same hormones at sexual maturation. Depending on the reproductive organ or brain region, initial programming events may be modulated by androgens or require conversion of androgens to estrogens...
2017: Journal of Toxicology and Environmental Health. Part B, Critical Reviews
https://www.readbyqxmd.com/read/28893567/molecular-basis-of-androgen-action-on-human-sexual-desire
#12
REVIEW
Daniele Santi, Giorgia Spaggiari, Lisa Gilioli, Francesco Potì, Manuela Simoni, Livio Casarini
Reproduction is a fundamental process for the species maintenance and the propagation of genetic information. The energy expenditure for mating is overtaken by motivational stimuli, such as orgasm, finely regulated by steroid hormones, gonadotropins, neurotransmitters and molecules acting in the brain and peripheral organs. These functions are often investigated using animal models and translated to humans, where the androgens action is mediated by nuclear and membrane receptors converging in the regulation of both long-term genomic and rapid non-genomic signals...
September 8, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28892486/misattribution-of-musical-arousal-increases-sexual-attraction-towards-opposite-sex-faces-in-females
#13
Manuela M Marin, Raphaela Schober, Bruno Gingras, Helmut Leder
Several theories about the origins of music have emphasized its biological and social functions, including in courtship. Music may act as a courtship display due to its capacity to vary in complexity and emotional content. Support for music's reproductive function comes from the recent finding that only women in the fertile phase of the reproductive cycle prefer composers of complex melodies to composers of simple ones as short-term sexual partners, which is also in line with the ovulatory shift hypothesis...
2017: PloS One
https://www.readbyqxmd.com/read/28891838/disease-screening-and-prevention-for-transgender-and-gender-diverse-adults
#14
Elizabeth Schmidt, Denise Rizzolo
Primary care clinicians have an important role in the health and wellness of transgender and gender-diverse (TGD) adults and need to know best practices of health maintenance and disease prevention interventions. This article focuses on how exogenous use of sex steroids provided as hormone therapy and gender-affirming procedures affect screening and prevention. Hormone therapy can affect the heart, liver, lipids, bones, brain, skin, and reproductive organs; likewise, behaviors and gender-affirming procedures may alter the risks, prevalence, and screening techniques of sexually transmitted infections...
September 7, 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28891264/hormonal-and-genetic-factors-interact-to-control-aromatase-expression-in-the-developing-brain
#15
REVIEW
Carla Daniela Cisternas, Luis Miguel Garcia-Segura, María Julia Cambiasso
The brain expression of the enzyme P450-aromatase has been extensively studied. Since the aromatization hypothesis established brain aromatase as a key factor to convert gonadal testosterone to oestradiol, several studies have investigated the regulation of aromatase during the critical period of brain sexual differentiation. Here, we review previous and recent findings concerning regulation of aromatase. The role of gonadal hormones, sex chromosome genes and neurosteroids is analysed in term of their contribution to aromatase expression and the implications for the organizational effect of steroids during development...
September 10, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28890130/effects-of-perinatal-bisphenol-a-exposure-on-the-volume-of-sexually-dimorphic-nuclei-of-juvenile-rats-a-clarity-bpa-consortium-study
#16
Sheryl E Arambula, Joelle Fuchs, Jinyan Cao, Heather B Patisaul
Bisphenol A (BPA) is a high volume endocrine disrupting chemical found in a wide variety of products including plastics and epoxy resins. Human exposure is nearly ubiquitous, and higher in children than adults. Because BPA has been reported to interfere with sex steroid hormone signaling, there is concern that developmental exposure, even at levels below the current FDA No Observed Adverse Effect Level (NOAEL) of 5mg/kg body weight (bw)/day, can disrupt brain sexual differentiation. The current studies were conducted as part of the CLARITY-BPA (Consortium Linking Academic and Regulatory Insights on BPA Toxicity) program and tested the hypothesis that perinatal BPA exposure would induce morphological changes in hormone sensitive, sexually dimorphic brain regions...
September 7, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28888817/mate-choice-sexual-selection-and-endocrine-disrupting-chemicals
#17
REVIEW
Andrea C Gore, Amanda M Holley, David Crews
Humans have disproportionately affected the habitat and survival of species through environmental contamination. Important among these anthropogenic influences is the proliferation of organic chemicals, some of which perturb hormone systems, the latter referred to as endocrine-disrupting chemicals (EDCs). EDCs are widespread in the environment and affect all levels of reproduction, including development of reproductive organs, hormone release and regulation through the life cycle, the development of secondary sexual characteristics, and the maturation and maintenance of adult physiology and behavior...
September 6, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28884865/physical-training-improves-visceral-adipose-tissue-health-by-remodelling-extracellular-matrix-in-rats-with-estrogen-absence-a-gene-expression-analysis
#18
Fernanda O Duarte, Camila do Valle Gomes-Gatto, Jorge C Oishi, Anderson Diogo de S Lino, Uliana S Stotzer, Maria Fernanda C Rodrigues, Guilherme H Gatti da Silva, Heloisa S Selistre-de-Araújo
Adipose tissue development is associated with modifications involving extracellular matrix remodelling, and metalloproteinases play a significant role in this process. Reduced circulating sexual hormones cause impacts on the size, morphology and functions of the adipose tissue, increasing susceptibility to diseases. This study investigated whether exercise training may be an alternative strategy to combat the effects promoted by estrogen decay through modulation in gene expression patterns in the extracellular matrix (ECM) of visceral adipose tissue of ovariectomized rats...
September 8, 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28882473/age-related-changes-in-sexual-function-and-steroid-hormone-receptors-in-the-medial-preoptic-area-of-male-rats
#19
Victoria L Nutsch, Ryan G Will, Daniel J Tobiansky, Michael P Reilly, Andrea C Gore, Juan M Dominguez
Testosterone is the main circulating steroid hormone in males, and acts to facilitate sexual behavior via both reduction to dihydrotestosterone (DHT) and aromatization to estradiol. The mPOA is a key site involved in mediating actions of androgens and estrogens in the control of masculine sexual behavior, but the respective roles of these hormones is not fully understood. As males age they show impairments in sexual function, and a decreased facilitation of behavior by steroid hormones compared to younger animals...
September 8, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28882079/using-qualitative-methods-to-understand-perceptions-of-risk-and-condom-use-in-african-american-college-women-implications-for-sexual-health-promotion
#20
TyWanda L McLaurin-Jones, Maudry-Beverley Lashley, Vanessa J Marshall
BACKGROUND: Young African American women are disproportionately affected with sexually transmitted infections (STIs) and unintentional pregnancies. Despite adequate knowledge, assertiveness, and negotiation skills, consistent condom use remains low. AIMS: We sought to assess the role of pregnancy and STI risk perception in condom decision making among African American women. METHOD: We conducted a phenomenological qualitative study. Utilizing a purposive sampling strategy, 100 African American women (18-24 years) were recruited from a historically Black college and university for an open discussion of condom use...
September 1, 2017: Health Education & Behavior: the Official Publication of the Society for Public Health Education
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