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https://www.readbyqxmd.com/read/29777911/deficiency-in-gnrh-receptor-trafficking-due-to-a-novel-homozygous-mutation-causes-idiopathic-hypogonadotropic-hypogonadism-in-three-prepubertal-siblings
#1
Rui Zhang, Siyuan Linpeng, Zhuo Li, Yingxi Cao, Hu Tan, Desheng Liang, Lingqian Wu
Idiopathic hypogonadotropic hypogonadism (IHH) is characterized by low levels of gonadotropins and delayed or absent sexual development. Most of the patients are diagnosed in late adolescence or early adulthood. Determining the diagnosis of IHH in prepubertal patients can be challenging. Making a timely, correct diagnosis has important clinical implications. Here we aimed to identify the genetic cause of IHH in three prepubertal siblings from a Chinese Han family and give appropriate treatment advice. Using whole exome sequencing (WES), we identified a novel homozygous GNRHR mutation (NM_000406; c...
May 16, 2018: Gene
https://www.readbyqxmd.com/read/29777228/effects-of-clomiphene-citrate-on-male-obesity-associated-hypogonadism-a-randomized-double-blind-placebo-controlled-study
#2
Andressa Heimbecher Soares, Nidia Celeste Horie, Lucas Augusto Piccinin Chiang, Bruno Caramelli, Mariana Gomes Matheus, Alexandre Holthausen Campos, Luciana Cavalheiro Marti, Fernanda Agostini Rocha, Marcio C Mancini, Elaine Maria Frade Costa, Cintia Cercato
BACKGROUND: Obesity causes secondary hypogonadism (HG) in men. Standard testosterone (T) replacement therapy improves metabolic parameters but leads to infertility. OBJECTIVE: To evaluate clomiphene citrate (CC) treatment of adult men with male obesity-associated secondary hypogonadism (MOSH). DESIGN: Single-center, randomized, double-blind, placebo-controlled trial. PARTICIPANTS: Seventy-eight men aged 36.5 ± 7...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29772564/impact-of-estrogen-and-photoperiod-on-arginine-vasotocin-and-vt3-receptor-expression-in-the-shell-gland-of-quail
#3
Rashmi Srivastava, Lawrence E Cornett, Chandra Mohini Chaturvedi
Role of estrogen and photoperiod is well-established in avian reproduction. In addition, the distribution and the expression of arginine vasotocin (AVT) and its receptor VT3 to ensure reproductive/breeding conditions in Japanese quail influenced by them has been the main focus of this review. To consider this aspect the mRNA expression of VT3 receptor and its ligand AVT in the shell gland has been emphasized. In birds, AVT performs a dual role as an anti-diuretic hormone and the functions accomplished by oxytocin in mammals...
June 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/29771299/at-the-crossroads-of-fate-somatic-cell-lineage-specification-in-the-fetal-gonad
#4
Emmi Rotgers, Anne Jørgensen, Humphrey Hung-Chang Yao
The reproductive endocrine systems are vastly different between male and female. This sexual dimorphism of endocrine milieu originates from sex-specific differentiation of the somatic cells in the gonads during fetal life. The majority of gonadal somatic cells arise from the adrenogonadal primordium. After separation of the adrenal and gonadal primordia, the gonadal somatic cells initiate sex-specific differentiation during gonadal sex determination with the specification of the supporting cell lineages: Sertoli cells in the testis vs...
May 15, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29770113/aggression-in-women-behavior-brain-and-hormones
#5
REVIEW
Thomas F Denson, Siobhan M O'Dean, Khandis R Blake, Joanne R Beames
We review the literature on aggression in women with an emphasis on laboratory experimentation and hormonal and brain mechanisms. Women tend to engage in more indirect forms of aggression (e.g., spreading rumors) than other types of aggression. In laboratory studies, women are less aggressive than men, but provocation attenuates this difference. In the real world, women are just as likely to aggress against their romantic partner as men are, but men cause more serious physical and psychological harm. A very small minority of women are also sexually violent...
2018: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29768628/androgen-insensitivity-syndrome-a-review
#6
Rafael Loch Batista, Elaine M Frade Costa, Andresa de Santi Rodrigues, Nathalia Lisboa Gomes, José Antonio Faria, Mirian Y Nishi, Ivo Jorge Prado Arnhold, Sorahia Domenice, Berenice Bilharinho de Mendonca
Androgenic insensitivity syndrome is the most common cause of disorders of sexual differentiation in 46,XY individuals. It results from alterations in the androgen receptor gene, leading to a frame of hormonal resistance, which may present clinically under 3 phenotypes: complete (CAIS), partial (PAIS) or mild (MAIS). The androgen receptor gene has 8 exons and 3 domains, and allelic variants in this gene occur in all domains and exons, regardless of phenotype, providing a poor genotype - phenotype correlation in this syndrome...
March 2018: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29767714/comparing-postnatal-development-of-gonadal-hormones-and-associated-social-behaviors-in-rats-mice-and-humans
#7
Margaret R Bell
Postnatal development includes dramatic changes in gonadal hormones and the many social behaviors they help regulate, both in rodents and humans. Parental care-seeking is the most salient social interaction in neonates and infants, play and pro-social behaviors are commonly studied in juveniles, and the development of aggression and sexual behavior begins in peripubertal stages but continues through late adolescence into adulthood. While parental behaviors are shown after reproductive success in adulthood, alloparenting behaviors are actually high in juveniles as well...
May 14, 2018: Endocrinology
https://www.readbyqxmd.com/read/29767687/hormone-responsive-genes-in-the-shh-and-wnt-%C3%AE-catenin-signaling-pathways-influence-urethral-closure-and-phallus-growth
#8
Yu Chen, Hongshi Yu, Andrew J Pask, Asao Fujiyama, Yutaka Suzuki, Sumio Sugano, Geoff Shaw, Marilyn B Renfree
Environmental endocrine disruptors (EEDs) that affect androgen or estrogen activity may disrupt gene regulation during normal phallus development to cause hypospadias or a masculinized clitoris. We treated developing male tammar wallabies with estrogen and females with androgen from day 20-40 postpartum (pp) during the established androgen imprinting window. Administration of estrogen to males inhibited phallus elongation but had no effect on urethral closure and did not significantly depress testicular androgen synthesis...
May 14, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29765927/comparing-the-pattern-of-menopausal-symptoms-concern-and-attitudes-in-urban-and-rural-postmenopausal-iranian-women
#9
Sevil Hakimi, Hurieh Badali Haggi, Shayan Kamali Shojai, Mostafa Farahbakhsh, Faranak Farhan
Objectives: Although hormonal changes during menopause are inevitable in this period, the severity of the menopausal symptoms can be controlled. Accepting menopause and having a positive attitude toward it can also help. Given the results of previous studies, and since environmental factors affect the pattern of menopausal symptoms the present study was conducted to compare the pattern of menopausal symptoms, concern and attitudes in urban and rural postmenopausal women. Methods: This cross-sectional study was conducted on urban and rural postmenopausal women residing in and around Tabriz, Iran...
April 2018: Journal of Menopausal Medicine
https://www.readbyqxmd.com/read/29765691/sexual-phenotype-drives-variation-in-endocrine-responses-to-social-challenge-in-a-quasi-clonal-animal
#10
Cheng-Yu Li, Shu-Ping Huang, Mark Garcia, Adam Fuller, Yuying Hsu, Ryan L Earley
In many species, males tend to behave more aggressively than females and female aggression often occurs during particular life stages such as maternal defence of offspring. Though many studies have revealed differences in aggression between the sexes, few studies have compared the sexes in terms of their neuroendocrine responses to contest experience. We investigated sex differences in the endocrine response to social challenge using mangrove rivulus fish, Kryptolebias marmoratus . In this species, sex is determined environmentally, allowing us to produce males and hermaphrodites with identical genotypes...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29763783/sex-differences-in-the-acth-and-cortisol-response-to-pharmacological-probes-are-stressor-specific-and-occur-regardless-of-alcohol-dependence-history
#11
Robert M Anthenelli, Jaimee L Heffner, Thomas J Blom, Belinda E Daniel, Benjamin S McKenna, Gary S Wand
Women and men differ in their risk for developing stress-related conditions such as alcohol use and anxiety disorders and there are gender differences in the typical sequence in which these disorders co-occur. However, the neural systems underlying these gender-biased psychopathologies and clinical course modifiers in humans are poorly understood and may involve both central and peripheral mechanisms regulating the limbic-hypothalamic-pituitary-adrenal axis. In the present randomized, double blind, placebo-controlled, triple-dummy crossover study, we juxtaposed a centrally-acting, citalopram (2 mg/unit BMI) neuroendocrine stimulation test with a peripherally-acting, dexamethasone (Dex) (1...
May 4, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29763641/ischemic-stroke-across-sexes-what-is-the-status-quo
#12
REVIEW
Luca Liberale, Federico Carbone, Fabrizio Montecucco, Cathérine Gebhard, Thomas F Lüscher, Susanne Wegener, Giovanni G Camici
Stroke prevalence is expected to increase in the next decades due to the aging of the Western population. Ischemic stroke (IS) shows an age- and sex-dependent distribution in which men represent the most affected population within 65 years of age, being passed by post-menopausal women in older age groups. Furthermore, a sexual dimorphism concerning risk factors, presentation and treatment of IS has been widely recognized. In order to address these phenomena, a number of issue have been raised involving both socio-economical and biological factors...
May 12, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29758382/effects-of-exposure-to-bpf-on-development-and-sexual-differentiation-during-early-life-stages-of-zebrafish-danio-rerio
#13
Qian Yang, Xianhai Yang, Jining Liu, Yingwen Chen, Shubao Shen
Bisphenol F (BPF) has become a predominant bisphenol contaminant in recent years. It has significant estrogenic properties in both in vivo and in vitro studies. We have previously studied the disrupting mechanisms of BPF on the hypothalamic-pituitary-gonadal axis of adult zebrafish. However, the effects of BPF exposure on development and sexual differentiation of zebrafish embryos/larvae remain unclear. To determine the effects of BPF on the critical stage of sex differentiation in zebrafish, zebrafish embryos/larvae were exposed to 1, 10, 100, and 1000 μg/L BPF from fertilization to 60 days post-fertilization (dpf)...
May 11, 2018: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29757929/transitioning-bodies-the-case-of-self-prescribing-sexual-hormones-in-gender-affirmation-in-individuals-attending-psychiatric-services
#14
Antonio Metastasio, Attilio Negri, Giovanni Martinotti, Ornella Corazza
Self-prescribing of sexual hormones for gender affirmation is a potentially widespread and poorly studied phenomenon that many clinicians are unaware of. The uncontrolled use of hormones poses significant health hazards, which have not been previously reported in the literature. We have collected seven clinical cases in general adult psychiatry settings (both inpatient and outpatients), describing transgender and gender non-conforming individuals' (TGNC) self-prescribing and self-administering hormones bought from the Internet without any medical consultation...
May 14, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29754747/sexual-dimorphism-in-predisposition-to-alzheimer-s-disease
#15
REVIEW
Daniel W Fisher, David A Bennett, Hongxin Dong
Clinical studies indicate that Alzheimer's disease (AD) disproportionately affects women in both disease prevalence and rate of symptom progression, but the mechanisms underlying this sexual divergence are unknown. Although some have suggested this difference in risk is a reflection of the known differences in longevity between men and women, mounting clinical and preclinical evidence supports women also having intrinsic susceptibilities toward the disease. Although a number of potential risk factors have been hypothesized to mediate these differences, none have been definitively verified...
April 17, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29754435/questionnaire-based-evaluation-of-sexual-life-after-laparoscopic-surgery-for-endometriosis-a-systematic-review-of-prospective-studies
#16
Cecilie Franck, Marlene Højhus Poulsen, Grigorios Karampas, Annamaria Giraldi, Martin Rudnicki
INTRODUCTION: Endometriosis is a benign disease, which affects women of reproductive age. Laparoscopic excision of endometriotic implants is considered one of the most effective therapeutic options. The disease and its treatment can have major impact on psychosexual well-being but this is often overlooked as most studies focus on pain instead of sexuality in a holistic approach. The aim of this study was to review the current literature regarding the effect of laparoscopic surgery for endometriosis on quality of sexual life (QoSL)...
May 12, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29753797/drug-development-for-brain-disorders-why-sex-matters-ischemic-stroke-across-sexes-what-is-the-status-quo
#17
REVIEW
Luca Liberale, Federico Carbone, Fabrizio Montecucco, Cathérine Gebhard, Thomas F Lüscher, Susanne Wegener, Giovanni G Camici
Stroke prevalence is expected to increase in the next decades due to the aging of the Western population. Ischemic stroke (IS) shows an age- and sex-dependent distribution in which men represent the most affected population within 65 years of age, being passed by post-menopausal women in older age groups. Furthermore, a sexual dimorphism concerning risk factors, presentation and treatment of IS has been widely recognized. In order to address these phenomena, a number of issue have been raised involving both socio-economical and biological factors...
May 10, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29749310/biological-and-psychological-influences-of-cross-sex-hormone-in-transgender
#18
Ling Shiao Ling, Hatta Sidi, Raja Adam Raja Lope, Srijit Das, Azlin Baharudin
Transgender is a complex state of bio-psycho-social dimension of human sexuality. It encompasses cognitive-emotional-behavior component that makes the person unique in his or her sexual expression. Transgender tend to use cross sex hormone in order to eradicate their secondary sexual characteristics and to facilitate the shift to their experienced gender. The common masculinising sex hormone use, i.e. Female to Male Treatment Options (FMTO) is testosterone and for feminising hormone i.e. Male to Female Treatment Options (MFTO) is a combination of estrogen with anti-androgen, respectively...
May 11, 2018: Current Drug Targets
https://www.readbyqxmd.com/read/29746996/plasma-biomarkers-in-juvenile-marine-fish-provide-evidence-for-endocrine-modulation-potential-of-organotin-compounds
#19
Byung Hwa Min, Bo-Mi Kim, Moonkoo Kim, Jung-Hoon Kang, Jee-Hyun Jung, Jae-Sung Rhee
Organotin compounds, such as tributyltin (TBT) and triphenyltin (TPT), have been widely used to control marine fouling. Here, we show that organotin stimulation reduces the hormone levels in the plasma of two economically important aquaculture fish. Blood plasma samples were collected from juvenile red seabream and black rockfish exposed to environmentally realistic concentrations of TBT and TPT for 14 days. The levels of two plasma biomarkers, namely the yolk protein precursor vitellogenin (VTG) and the sex steroid 17β-estradiol (E2), were measured to determine the endocrine disrupting potential of the organotin compounds...
May 7, 2018: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29740329/mechanisms-underlying-the-risk-to-develop-drug-addiction-insights-from-studies-in-drosophila-melanogaster
#20
REVIEW
Julia Ryvkin, Assa Bentzur, Shir Zer-Krispil, Galit Shohat-Ophir
The ability to adapt to environmental changes is an essential feature of biological systems, achieved in animals by a coordinated crosstalk between neuronal and hormonal programs that allow rapid and integrated organismal responses. Reward systems play a key role in mediating this adaptation by reinforcing behaviors that enhance immediate survival, such as eating or drinking, or those that ensure long-term survival, such as sexual behavior or caring for offspring. Drugs of abuse co-opt neuronal and molecular pathways that mediate natural rewards, which under certain circumstances can lead to addiction...
2018: Frontiers in Physiology
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