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https://www.readbyqxmd.com/read/28222406/leydig-cell-clustering-and-reinke-crystal-distribution-in-relation-to-hormonal-function-in-adult-patients-with-testicular-dysgenesis-syndrome-tds-including-cryptorchidism
#1
Rikke R Soerensen, Trine H Johannsen, Niels E Skakkebaek, Ewa Rajpert-De Meyts
OBJECTIVE: Testicular dysgenesis syndrome (TDS) comprises testicular germ cell cancer, cryptorchidism and some cases of male infertility and hypospadias, which can be linked to impairment of intrauterine gonadal development. Among histological signs of TDS, large Leydig cell (LC) clusters (micronodules) are frequently present. This study aimed to investigate possible associations of LC micronodules with the presence of Reinke crystals and hormonal function of LCs, the latter primarily reflected by serum concentrations of luteinising hormone (LH) and testosterone, in patients with TDS...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28222069/patients-perceptions-of-the-negative-effects-following-different-prostate-cancer-treatments-and-the-impact-on-psychological-well-being-a-nationwide-survey
#2
Ulla-Sisko Lehto, Heli Tenhola, Kimmo Taari, Arpo Aromaa
BACKGROUND: Although the prognosis of localised prostate cancer is good, the negative effects of prostate cancer treatment often impair patient quality of life. A growing number of men experience these negative effects over a longer time because of the increased incidence of and prolonged survival in prostate cancer, and the ageing of the population. Only a few studies have investigated the adverse effects of different prostate cancer treatments using large population-based samples. METHODS: We conducted a nationwide survey (n=1239) to collect detailed information regarding the negative effects (i...
February 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28221827/hormonally-mediated-increases-in-sex-biased-gene-expression-accompany-the-breakdown-of-between-sex-genetic-correlations-in-a-sexually-dimorphic-lizard
#3
Robert M Cox, Christian L Cox, Joel W McGlothlin, Daren C Card, Audra L Andrew, Todd A Castoe
The evolution of sexual dimorphism is predicted to occur through reductions in between-sex genetic correlations (rmf) for shared traits, but the physiological and genetic mechanisms that facilitate these reductions remain largely speculative. Here, we use a paternal half-sibling breeding design in captive brown anole lizards (Anolis sagrei) to show that the development of sexual size dimorphism is mirrored by the ontogenetic breakdown of rmf for body size and growth rate. Using transcriptome data from the liver (which integrates growth and metabolism), we show that sex-biased gene expression also increases dramatically between ontogenetic stages bracketing this breakdown of rmf...
March 2017: American Naturalist
https://www.readbyqxmd.com/read/28219743/significant-association-of-cyp19a-promoter-methylation-with-environmental-factors-and-gonadal-differentiation-in-olive-flounder-paralichthys-olivaceus
#4
Zhaofei Fan, Yuxia Zou, Shuang Jiao, Xungang Tan, Zhihao Wu, DongDong Liang, Peijun Zhang, Feng You
The sex ratio of olive flounder Paralichthys olivaceus is sensitive to temperature or exogenous hormone exposures in the period of gonadal differentiation. Among sex-related genes, cyp19a, encoding cytochrome P450 aromatase,exhibits significant sex-dimorphic expression pattern and plays an important role in fish gonadal differentiation and development. The present study investigated the expression levels and promoter methylation dynamics of cyp19a and its regulators (nr5a2 and nr0b1), and sex-steroid hormone levels during flounder gonadal differentiation under the treatments of high temperature and estradiol-17β (E2)...
February 17, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28218624/loss-of-microrna-7a2-induces-hypogonadotropic-hypogonadism-and-infertility
#5
Kashan Ahmed, Mary P LaPierre, Emanuel Gasser, Rémy Denzler, Yinjie Yang, Thomas Rülicke, Jukka Kero, Mathieu Latreille, Markus Stoffel
MicroRNAs (miRNAs) are negative modulators of gene expression that fine-tune numerous biological processes. miRNA loss-of-function rarely results in highly penetrant phenotypes, but rather, influences cellular responses to physiologic and pathophysiologic stresses. Here, we have reported that a single member of the evolutionarily conserved miR-7 family, miR-7a2, is essential for normal pituitary development and hypothalamic-pituitary-gonadal (HPG) function in adulthood. Genetic deletion of mir-7a2 causes infertility, with low levels of gonadotropic and sex steroid hormones, small testes or ovaries, impaired spermatogenesis, and lack of ovulation in male and female mice, respectively...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28217493/outcome-and-preferences-in-male-to-female-subjects-with-gender-dysphoria-experience-from-eastern-india
#6
Anirban Majumder, Debmalya Sanyal
CONTEXT: Gender dysphoria (GD) is an increasingly recognized medical condition in India, and little scientific data on treatment outcomes are available. AIMS: Our objective is to study the therapeutic options including psychotherapy, hormone, and surgical treatments used for alleviating GD in male-to-female (MTF) transgender subjects in Eastern India. SUBJECTS AND METHODS: This is a retrospective study of treatment preferences and outcome in 55 MTF transgender subjects who were presented to the endocrine clinic...
January 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28216129/social-media-use-and-its-association-with-sexual-risk-and-parental-monitoring-among-a-primarily-hispanic-adolescent-population
#7
Dina L Romo, Chelsea Garnett, Alayna P Younger, Melissa S Stockwell, Karen Soren, Marina Catallozzi, Natalie Neu
STUDY OBJECTIVE: This study assesses the association between social media (SM) use with sexual risk, and with parental monitoring among Hispanic adolescents. DESIGN: Self-administered anonymous survey SETTING: Urban primary care clinics PARTICIPANTS: 13-21 year olds primarily Hispanic adolescents MAIN OUTCOME MEASURES: Chi-square and regression analyses controlling for age and gender assessed associations between SM use or sexting and sexual behaviors (kissing, touching genitals, vaginal oral, and anal sex), sexual risk (>4 lifetime partners, >1 recent partner, inconsistent condom use and history of STI diagnosis) and contraceptive use...
February 16, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28214901/protective-effects-of-fluvastatin-on-reproductive-function-in-obese-male-rats-induced-by-high-fat-diet-through-enhanced-signaling-of-mtor
#8
Xiangrong Cui, Chunlan Long, Jing Zhu, Jie Tian
BACKGROUND: Statins can reduce reproductive damage induced by obesity or high-fat diet (HFD), but the specific regulatory mechanisms are largely unknown. Since mTOR/p70s6k sinaling promotes spermatogonia proliferation and spermatogenesis, we hypothesized that this pathway will be involved in the protective effects of statin in HFD-induced reproductive dysfunction. METHODS: Male Sprague Dawley rats (3 weeks old) were randomly divided into a control group (standard diet), HFD group, and a fluvastatin group (HFD + fluvastatin at 6mg/kg, once daily by oral gavage)...
February 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214679/estradiol-is-a-critical-regulator-of-food-reward-behavior
#9
Jennifer E Richard, Lorena López-Ferreras, Rozita H Anderberg, Kajsa Olandersson, Karolina P Skibicka
Food intake is reduced by estrogenic hormones, levels of which vary throughout life and fluctuate throughout the ovarian cycle in females. However, estrogens have also been shown to increase reward derived from drugs of abuse, where motivational properties of drugs and progression to addiction are potentiated by estrogens. Whether reward derived from food, and specifically motivational properties of food, are altered by estrogens remains unknown. Here we investigated the effect of the estrous cycle on food reward behavior and show estrous cycle dictated variability in food motivation, measured by progressive ratio operant conditioning, in female rats...
January 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28214238/high-prevalence-of-low-serum-biologically-active-testosterone-in%C3%A2-older-male-veterans
#10
Christine F Conover, Joshua F Yarrow, Timothy J Garrett, Fan Ye, Eoin P Quinlivan, Darryl F Cannady, Mark D Peterson, Stephen E Borst
OBJECTIVES: Assess the prevalence of hypogonadism in older male Veterans by comparing direct measurements of total testosterone (T) and bioavailable testosterone (BioT) versus indirect BioT values derived from existing and newly developed regression analyses. DESIGN: Cohort study. SETTING: Malcom Randall VA Medical Center, Gainesville, FL. PARTICIPANTS: Community-dwelling male Veterans aged 60 and older (n = 203). MEASUREMENTS: Total T, BioT, albumin, sex hormone-binding globulin (SHBG), and body mass index were evaluated...
February 14, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28213203/ghrelin-s-control-of-food-reward-and-body-weight-in-the-lateral-hypothalamic-area-is-sexually-dimorphic
#11
Lorena López-Ferreras, Jennifer E Richard, Rozita H Anderberg, Fredrik H Nilsson, Kajsa Olandersson, Scott E Kanoski, Karolina P Skibicka
Ghrelin is a stomach-produced hormone that stimulates ingestive behavior and increases motivated behavior to obtain palatable foods. Ghrelin receptors (growth hormone secretagogue receptors; Ghsr) are expressed in the lateral hypothalamic area (LHA), and LHA-targeted ghrelin application increases ingestive behavior in male rodents. However, the effects of LHA ghrelin signaling in females are unexplored. Here we investigated whether LHA ghrelin signaling is necessary and sufficient for control of ingestive and motivated behavior for food in male and female rats...
February 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28212612/african-ancestry-is-associated-with-facial-melasma-in-women-a-cross-sectional-study
#12
Maria Paula Barbieri D'Elia, Marcela Calixto Brandão, Bruna Ribeiro de Andrade Ramos, Márcia Guimarães da Silva, Luciane Donida Bartoli Miot, Sidney Emanuel Batista Dos Santos, Hélio Amante Miot
BACKGROUND: Melasma is a chronic acquired focal hypermelanosis affecting photoexposed areas, especially for women during fertile age. Several factors contribute to its development: sun exposure, sex steroids, medicines, and family history. Melanic pigmentation pathway discloses several SNPs in different populations. Here, we evaluated the association between genetic ancestry and facial melasma. METHODS: A cross-sectional study involving women with melasma and an age-matched control group from outpatients at FMB-Unesp, Botucatu-SP, Brazil was performed...
February 17, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28212122/a-research-of-soft-tissue-lipoma-genesis-factor-with-immunohistochemical-analysis
#13
Jun Beom Lee, Hwan Jun Choi, Eun Taik Son, Jun Hyuk Kim
INTRODUCTION: Lipoma is the most familiar soft-tissue tumor. But the etiology of lipoma remains imprecise. Sex steroid hormones such as estrogen have effects on muscle and adipose tissue development. There is now significant evidence that sex steroids are involved in the site specificities of adipose tissue metabolism. This association of adipose tissue metabolism between sex steroid hormones suggests a possible role for sex steroids in the pathogenesis of lipoma. METHODS: To investigate this concept, the authors evaluated the expression of the estrogen receptor (ER) and the progesterone receptor (PR) in soft tissue lipoma in this study...
February 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28211638/the-relationship-between-ovarian-function-and-ovarian-limited-dose-in-radiotherapy-postoperation-of-ovarian-transposition-in-young-patients-with-cervical-cancer
#14
Zhenhua Du, Hui Qu
In this study, the relationship between ovarian function and ovarian limited dose in radiotherapy was evaluated in young patients with cervical cancer who underwent ovarian transposition (Fig1B). Moreover, the novel ovarian dose limit for a better preservation of ovarian function in intensity-modulated radiation therapy (IMRT) was determined. We retrospectively analyzed data from 86 patients with cervical cancer who received radical hysterectomy and ovarian transposition from January 2013 to June 2015. In agreement with the National Comprehensive Cancer Network Guidelines (NCCN) for Cervical Cancer Version 2...
February 17, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28211029/influence-of-segmental-body-composition-and-adiposity-hormones-on-resting-metabolic-rate-and-substrate-utilization-in-overweight-and-obese-adults
#15
K R Hirsch, A E Smith-Ryan, M N M Blue, M G Mock, E T Trexler
PURPOSE: Low resting metabolic rate (RMR) and high carbohydrate reliance at rest are associated with weight gain, but are highly variable in obese individuals. This study determined the relationship of total and segmental body composition and adiposity hormones with RMR and respiratory exchange ratio (RER) in overweight and obese adults. METHODS: In 49 men (n = 23) and premenopausal women (n = 26) [mean ± SD; age = 35.0 ± 8.9 years; body mass index (BMI) = 33...
February 16, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28209183/variants-in-congenital-hypogonadotrophic-hypogonadism-genes-identified-in-an-indonesian-cohort-of-46-xy-under-virilised-boys
#16
Katie L Ayers, Aurore Bouty, Gorjana Robevska, Jocelyn A van den Bergen, Achmad Zulfa Juniarto, Nurin Aisyiyah Listyasari, Andrew H Sinclair, Sultana M H Faradz
BACKGROUND: Congenital hypogonadotrophic hypogonadism (CHH) and Kallmann syndrome (KS) are caused by disruption to the hypothalamic-pituitary-gonadal (H-P-G) axis. In particular, reduced production, secretion or action of gonadotrophin-releasing hormone (GnRH) is often responsible. Various genes, many of which play a role in the development and function of the GnRH neurons, have been implicated in these disorders. Clinically, CHH and KS are heterogeneous; however, in 46,XY patients, they can be characterised by under-virilisation phenotypes such as cryptorchidism and micropenis or delayed puberty...
February 16, 2017: Human Genomics
https://www.readbyqxmd.com/read/28209133/house-spider-genome-uncovers-evolutionary-shifts-in-the-diversity-and-expression-of-black-widow-venom-proteins-associated-with-extreme-toxicity
#17
Kerry L Gendreau, Robert A Haney, Evelyn E Schwager, Torsten Wierschin, Mario Stanke, Stephen Richards, Jessica E Garb
BACKGROUND: Black widow spiders are infamous for their neurotoxic venom, which can cause extreme and long-lasting pain. This unusual venom is dominated by latrotoxins and latrodectins, two protein families virtually unknown outside of the black widow genus Latrodectus, that are difficult to study given the paucity of spider genomes. Using tissue-, sex- and stage-specific expression data, we analyzed the recently sequenced genome of the house spider (Parasteatoda tepidariorum), a close relative of black widows, to investigate latrotoxin and latrodectin diversity, expression and evolution...
February 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28208955/high-serum-estradiol-and-heavy-metals-responsible-for-human-spermiation-defect-a-pilot-study
#18
Manish Jain, Amanpreet Kaur Kalsi, Amita Srivastava, Yogendra Kumar Gupta, Ashutosh Halder
INTRODUCTION: Spermiation is a process of releasing sperm into the lumen of seminiferous tubules. Failure in releasing sperm into the lumen is designated as spermiation defect. Spermiation defect cases present as oligo-azoospermia or azoospermia despite normal gonadotropins and testicular histology/cytology. Human spermiation defect never got attention to investigate infertility practice. Most of the information on spermiation defect, so far is from animal experiments. We assume some cases of non-obstructive azoospermia with normal gonadotropins and testicular histology/cytology could be due to spermiation defect...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208875/erectile-dysfunction-and-low-sex-drive-in-men-with-type-2-dm-the-potential-role-of-diabetic-pharmacotherapy
#19
Hayder M Al-Kuraishy, Ali I Al-Gareeb
INTRODUCTION: Diabetic men with erectile dysfunction have not been widely studied. They have low testosterone levels, causing low sex drive and erectile dysfunction. AIM: To assess the erectile dysfunction and sex drive in relation to testosterone serum levels in type 2 Diabetes Mellitus (DM) patients. MATERIALS AND METHODS: A total of 64 patients with type 2 DM were enrolled in this cross-sectional study, according to the treatment types they were divided into three groups, group (A): 34 patients treated with metformin, group (B): 30 patients treated with sulfonylurea and group (C): 27 healthy normal non-diabetic men are taken as control...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28203366/sex-differences-in-variability-across-timescales-in-balb-c-mice
#20
Benjamin L Smarr, Azure D Grant, Irving Zucker, Brian J Prendergast, Lance J Kriegsfeld
BACKGROUND: Females are markedly underinvestigated in the biological and behavioral sciences due to the presumption that cyclic hormonal changes across the ovulatory cycle introduce excess variability to measures of interest in comparison to males. However, recent analyses indicate that male and female mice and rats exhibit comparable variability across numerous physiological and behavioral measures, even when the stage of the estrous cycle is not considered. Hormonal changes across the ovulatory cycle likely contribute cyclic, intra-individual variability in females, but the source(s) of male variability has, to our knowledge, not been investigated...
2017: Biology of Sex Differences
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