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Testosterone for women

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https://www.readbyqxmd.com/read/29332211/testosterone-mediated-upregulation-of-delayed-rectifier-potassium-channel-in-cardiomyocytes-causes-abbreviation-of-qt-intervals-in-rats
#1
Kimiko Masuda, Hiroki Takanari, Masaki Morishima, FangFang Ma, Yan Wang, Naohiko Takahashi, Katsushige Ono
Men have shorter rate-corrected QT intervals (QTc) than women, especially at the period of adolescence or later. The aim of this study was to elucidate the long-term effects of testosterone on cardiac excitability parameters including electrocardiogram (ECG) and potassium channel current. Testosterone shortened QT intervals in ECG in castrated male rats, not immediately after, but on day 2 or later. Expression of Kv7.1 (KCNQ1) mRNA was significantly upregulated by testosterone in cardiomyocytes of male and female rats...
January 13, 2018: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/29330698/circulating-hormones-and-mammographic-density-in-premenopausal-women
#2
Kimberly A Bertrand, A Heather Eliassen, Susan E Hankinson, Bernard A Rosner, Rulla M Tamimi
Prior research suggests that several endogenous hormones in premenopausal women are associated with breast cancer risk; however, few studies have evaluated associations of endogenous hormones with mammographic density (MD) in premenopausal women. We conducted a cross-sectional study of plasma hormone levels in relation to MD among 634 cancer-free premenopausal women in the Nurses' Health Study II. We measured percent MD from screening mammograms using a computer-assisted method. We assayed estradiol, estrone, and estrone sulfate in blood samples timed in early follicular and mid-luteal phases of the menstrual cycle as well as testosterone, androstenedione, progesterone, dehydroepiandrosterone (DHEA), DHEA sulfate, sex hormone-binding globulin (SHBG), and anti-Müllerian hormone in luteal or untimed samples...
January 12, 2018: Hormones & Cancer
https://www.readbyqxmd.com/read/29329467/low-aromatase-activity-and-estradiol-sex-hormone-binding-globulin-ratio-are-associated-with-total-hip-bone-mineral-density-and-the-presence-of-osteoporosis-a-study-in-chinese-postmenopausal-women
#3
Hai-Juan Liu, Jun Yan, Yan Li, Fang-Yuan Zhou, Xu-Dong Su, Hui-Jing Fan, Jie Bai, Guang-Zhen Zhang
Several groups have reported the important role of estradiol (E2) and testosterone (T) in postmenopausal osteoporosis (PMOP). Because aromatase catalyzes the conversion of T to E2, the purpose of this study was to determine the influence of aromatase activity on the bone mineral density (BMD) in postmenopausal women. A total of 344 postmenopausal women were selected for this study. Serum E2, T, sex hormone-binding globulin (SHBG), calcium (Ca), alkaline phosphatase (ALP), C-terminal telopeptide of type I collagen (CTX), and procollagen type I amino-terminal propeptide (PINP) were examined...
January 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29325133/the-efficacy-of-24-month-metformin-for-improving-menses-hormone-and-metabolic-profiles-in-polycystic-ovary-syndrome
#4
Po-Kai Yang, Chih-Yuan Hsu, Mei-Jou Chen, Mei-Yu Lai, Zheng-Rong Li, Chen-Hsin Chen, Shee-Uan Chen, Hong-Nerng Ho
Context: The long-term effects of metformin in women with polycystic ovarian syndrome (PCOS) are inadequately studied. Objective: The effects of metformin on women with PCOS over 24-month with respect to menses, hormones and metabolic profiles are assessed. Design: Prospective cohort. Setting: A reproductive endocrinology clinic in a university-affiliated medical center. Patients: 119 women with PCOS, defined by the Rotterdam criteria, were enrolled...
January 9, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29324787/association-of-sex-hormones-with-physical-laboratory-and-imaging-markers-of-anthropometry-in-men-and-women-from-the-general-population
#5
Tom Seyfart, Nele Friedrich, Hanna Kische, Robin Bülow, Henri Wallaschofski, Henry Völzke, Matthias Nauck, Brian G Keevil, Robin Haring
OBJECTIVES: The aim of this study was to evaluate the association of sex hormones with anthropometry in a large population-based cohort, with liquid chromatography-mass spectrometry (LCMS)-based sex hormone measurements and imaging markers. STUDY DESIGN/MAIN OUTCOME MEASURES: Cross-sectional data from 957 men and women from the population-based Study of Health in Pomerania (SHIP) were used. Associations of a comprehensive panel of LCMS-measured sex hormones with anthropometric parameters, laboratory, and imaging markers were analyzed in multivariable regression models for the full sample and stratified by sex...
2018: PloS One
https://www.readbyqxmd.com/read/29322301/effects-of-short-term-dhea-intake-on-hormonal-responses-in-young-recreationally-trained-athletes-modulation-by-gender
#6
Katia Collomp, Corinne Buisson, Nicolas Gravisse, Soraya Belgherbi, Zakaria Labsy, Manh-Cuong Do, Olivier Gagey, Sophie Dufay, Nancy Vibarel-Rebot, Michel Audran
BACKGROUND: Dehydroepiandrosterone (DHEA) figures on the World Anti-Doping Agency list of prohibited substances in sport because it is assumed that athletes expect a significant increase in testosterone through DHEA administration. The literature on the hormonal effects of DHEA intake nevertheless appears to be very scant in healthy young subjects, especially women. PURPOSE: We examined the effects of DHEA on adrenal and gonadal hormones, IGF1 and free T3 in healthy young male and female recreationally trained volunteers...
January 10, 2018: Endocrine
https://www.readbyqxmd.com/read/29320952/fatty-acid-binding-protein-4-is-associated-with-disability-in-multiple-sclerosis-patients
#7
Riley Bove, Brain C Healy, Alexander Musallam, Pejvak Soltany, Camilo Diaz-Cruz, Neda Sattarnezhad, Bonnie I Glanz, Pia Kivisäkk, Karen K Miller, Tanuja Chitnis
BACKGROUND: Increased adiposity is a risk factor for multiple sclerosis (MS) and is associated with increased disability scores. Adipokines may mediate the effects of adiposity on MS disease course. OBJECTIVE: The objective of this study is to examine the association between the adipokines (leptin and fatty acid binding protein-4, FABP4) and clinical course in individuals with MS. METHODS: Subjects (18-65 years) with relapsing-remitting MS or clinically isolated syndrome and <10 year disease duration were selected from a longitudinal clinical study...
January 1, 2018: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29317066/an-exploration-of-the-hypothesis-that-testosterone-is-implicated-in-the-psychological-functioning-of-women-with-polycystic-ovary-syndrome-pcos
#8
J A Barry, F Qu, P J Hardiman
One of the diagnostic features of polycystic ovary syndrome (PCOS) is elevation of the androgen, testosterone. It is known that women with PCOS are more likely to suffer from psychological problems, especially anxiety and depression, than other women. However, little is known of how much of this is due to testosterone, and if so, what the mechanism(s) might be. This study explores the hypothesis that testosterone impacts women with PCOS both directly and indirectly, via testosterone currently in the bloodstream and through prenatal exposure...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29314138/ovarian-markers-and-irregular-menses-among-women-with-type-1-diabetes-in-the-epidemiology-of-diabetes-interventions-and-complications-study
#9
C Kim, R S Miller, B H Braffett, Y Pan, V L Arends, A K Saenger, A Barnie, A V Sarma
OBJECTIVE: Women with type 1 diabetes have increased risk of infertility compared to women without diabetes even after adjustment for irregular menses, but etiologies are incompletely understood. Our aim was to examine the prevalence of abnormalities in ovarian markers consistent with polycystic ovary syndrome in women with type 1 diabetes and associations with irregular menses and diabetes-specific variables. DESIGN, PATIENTS, AND MEASUREMENTS: We conducted a secondary analysis of women in the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications Study (DCCT/EDIC), a randomized trial and observational follow-up of intensive insulin therapy for type 1 diabetes...
January 4, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29310733/anogenital-distance-in-newborn-daughters-of-women-with-polycystic-ovary-syndrome-indicates-fetal-testosterone-exposure
#10
E S Barrett, K M Hoeger, S Sathyanarayana, D H Abbott, J B Redmon, R H N Nguyen, S H Swan
Polycystic ovary syndrome (PCOS) affects ~7% of reproductive age women. Although its etiology is unknown, in animals, excess prenatal testosterone (T) exposure induces PCOS-like phenotypes. While measuring fetal T in humans is infeasible, demonstrating in utero androgen exposure using a reliable newborn biomarker, anogenital distance (AGD), would provide evidence for a fetal origin of PCOS and potentially identify girls at risk. Using data from a pregnancy cohort (The Infant Development and Environment Study), we tested the novel hypothesis that infant girls born to women with PCOS have longer AGD, suggesting higher fetal T exposure, than girls born to women without PCOS...
January 9, 2018: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29306775/longitudinal-change-instead-of-baseline-testosterone-predicts-depressive-symptoms
#11
Hanna Kische, Lars Pieper, John Venz, Jens Klotsche, Winfried März, Uwe Koch-Gromus, David Pittrow, Hendrik Lehnert, Sigmund Silber, G K Stalla, Andreas M Zeiher, Hans-Ulrich Wittchen, Robin Haring
BACKGROUND: The association between total testosterone (T) and depression mostly relies on single sex hormone assessment and remains inconclusive. Thus, we investigated the comparative predictive performance of baseline T and change in T with development of depressive symptoms and incident depressive episodes. METHODS: We used data from 6493 primary care patients (2653 men and 3840 women) of the DETECT study (Diabetes Cardiovascular Risk-Evaluation: Targets and Essential Data for Commitment of Treatment), including four-year follow-up, repeated immunoassay-based measurement of serum T and depressive symptoms assessed by the Depression Screening Questionnaire (DSQ)...
December 21, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29299723/current-smoking-is-associated-with-a-larger-waist-circumference-and-a-more-androgenic-profile-in-young-healthy-women-from-high-risk-breast-cancer-families
#12
Carolina Ellberg, Håkan Olsson, Helena Jernström
The purpose was to elucidate the interplay between current smoking, anthropometric measurements, and endogenous hormone levels in women ≤ 40 years. Questionnaires on lifestyle and reproductive factors were completed by 269 healthy women from high-risk breast cancer families between 1996 and 2006 in Sweden. Blood samples for analyses of plasma testosterone, estradiol, androstenedione, sex hormone-binding globulin, and body measurements were obtained 5-10 days before predicted onset of the next menstrual period...
January 3, 2018: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/29295870/effect-of-liraglutide-on-atrial-natriuretic-peptide-adrenomedullin-and-copeptin-in-pcos
#13
Signe Frøssing, Malin Nylander, Caroline Kistorp, Sven O Skouby, Jens Faber
CONTEXT: Women with polycystic ovary syndrome (PCOS) have an increased risk of cardiovascular disease (CVD), and biomarkers can be used to detect early subclinical CVD. Midregional-pro-adrenomedullin (MR-proADM), midregional-pro-atrial natriuretic peptide (MR-proANP) and copeptin are all associated with CVD and part of the delicate system controlling fluid and hemodynamic homeostasis through vascular tonus and diuresis. The GLP-1 receptor agonist liraglutide, developed for treatment of type 2 diabetes (T2D), improves cardiovascular outcomes in patients with T2D including a decrease in particular MR-proANP...
January 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29290213/sex-hormone-levels-and-change-in-left-ventricular-structure-among-men-and-post-menopausal-women-the-multi-ethnic-study-of-atherosclerosis-mesa
#14
Vinita Subramanya, Di Zhao, Pamela Ouyang, Joao A Lima, Dhananjay Vaidya, Chiadi E Ndumele, David A Bluemke, Sanjiv J Shah, Eliseo Guallar, Chike C Nwabuo, Matthew A Allison, Susan R Heckbert, Wendy S Post, Erin D Michos
OBJECTIVE: Sex hormone (SH) levels may contribute to sex differences in the risk of heart failure with preserved ejection fraction (HFpEF). We examined the associations of SH levels with left ventricular mass (LVM) and mass (M):volume (V) ratio, which are risk markers for HFpEF. STUDY DESIGN: We studied 1941 post-menopausal women and 2221 men, aged 45-84 years, participating in the Multi-Ethnic Study of Atherosclerosis (MESA). Serum SH levels, cardiac magnetic resonance imaging (MRI) and ejection fraction (EF) ≥50% had been recorded at baseline (2000-2002)...
February 2018: Maturitas
https://www.readbyqxmd.com/read/29289554/efficacy-and-safety-of-on-demand-use-of-2-treatments-designed-for-different-etiologies-of-female-sexual-interest-arousal-disorder-3-randomized-clinical-trials
#15
Adriaan Tuiten, Kim van Rooij, Jos Bloemers, Christoph Eisenegger, Jack van Honk, Rob Kessels, Sheryl Kingsberg, Leonard R Derogatis, Leo de Leede, Jeroen Gerritsen, Hans P F Koppeschaar, Berend Olivier, Walter Everaerd, Henderik W Frijlink, Daniël Höhle, Robert P J de Lange, Koen B E Böcker, James G Pfaus
BACKGROUND: In women, low sexual desire and/or sexual arousal can lead to sexual dissatisfaction and emotional distress, collectively defined as female sexual interest/arousal disorder (FSIAD). Few pharmaceutical treatment options are currently available. AIM: To investigate the efficacy and safety of 2 novel on-demand pharmacologic treatments that have been designed to treat 2 FSIAD subgroups (women with low sensitivity for sexual cues and women with dysfunctional over-activation of sexual inhibition) using a personalized medicine approach using an allocation formula based on genetic, hormonal, and psychological variables developed to predict drug efficacy in the subgroups...
December 27, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29287282/general-sexual-desire-but-not-desire-for-uncommitted-sexual-relationships-tracks-changes-in-women-s-hormonal-status
#16
Benedict C Jones, Amanda C Hahn, Claire I Fisher, Hongyi Wang, Michal Kandrik, Lisa M DeBruine
Several recent longitudinal studies have investigated the hormonal correlates of both young adult women's general sexual desire and, more specifically, their desire for uncommitted sexual relationships. Findings across these studies have been mixed, potentially because each study tested only small samples of women (Ns = 43, 33, and 14). Here we report results from a much larger (N = 375) longitudinal study of hormonal correlates of young adult women's general sexual desire and their desire for uncommitted sexual relationships...
December 21, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29286987/a-systematic-review-of-intravaginal-testosterone-for-the-treatment-of-vulvovaginal-atrophy
#17
Robin J Bell, Farwa Rizvi, Rakabul M Islam, Susan R Davis
OBJECTIVES: Intravaginal testosterone has emerged as a potential treatment for vulvovaginal atrophy (VVA) in women, in general, and women taking an aromatase inhibitor (AI). A systematic review of the literature was undertaken to determine whether available clinical trial data support efficacy and safety of intravaginal testosterone for the treatment of VVA. METHODS: Scopus, MEDLINE, EMBASE, and the Cochrane Library databases were systematically searched on July 26, 2017, for human studies published in English of clinical trials of intravaginal testosterone...
December 28, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/29285778/in-women-with-pcos-waist-circumference-is-a-better-surrogate-of-glucose-and-lipid-metabolism-than-disease-status-per-se
#18
A Pazderska, T Kyaw Tun, N Phelan, A McGowan, M Sherlock, L A Behan, G Boran, J Gibney
OBJECTIVE: Cardiometabolic abnormalities are recognised in polycystic ovary syndrome (PCOS). However, over-emphasis on PCOS as a risk factor potentially results in over-investigation and treatment of some women with, and under-recognition of cardiometabolic risk in obese women without PCOS. Our objective was to explore the association between waist circumference (WC) and indices of glucose and lipid metabolism in women with and without PCOS. DESIGN, PATIENTS AND MEASUREMENTS: (1) an exploratory cross-sectional study investigating association of potential cardiometabolic risk markers (PCOS status, anthropometric measures, hsCRP, HOMA-IR, SHBG, testosterone) with indices of glucose (frequently-sampled-intravenous-glucose-tolerance-test) and lipid metabolism (post-prandial studies and lipoprotein particle size) in 61 women with (n=29) and without (n=32) PCOS; (2) a cross-sectional study in 103 PCOS women and 102 BMI-matched controls to explore if between-group differences in indices of lipid and glucose metabolism persist after adjusting for WC...
December 29, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29277698/interactions-between-observer-and-stimuli-fertility-status-endocrine-and-perceptual-responses-to-intrasexual-vocal-fertility-cues
#19
Grant M Ostrander, R Nathan Pipitone, Melanie L Shoup-Knox
Both men and women find female voices more attractive at higher fertility times in the menstrual cycle, suggesting the voice is a cue to fertility and/or hormonal status. Preference for fertile females' voices provides males with an obvious reproduction advantage, however the advantage for female listeners is less clear. One possibility is that attention to the fertility status of potential rivals may enable women to enhance their own reproductive strategies through intrasexual competition. If so, the response to having high fertility voices should include hormonal changes that promote competitive behavior...
December 22, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/29276717/longitudinal-associations-of-sexual-fluidity-and-health-in-transgender-men-and-cisgender-women-and-men
#20
Sabra L Katz-Wise, David N Williams, Colton L Keo-Meier, Stephanie L Budge, Seth Pardo, Carla Sharp
Research has just begun to study associations between sexual fluidity and health among cisgender individuals; only one cross-sectional study examined these links among transgender individuals. The goals of the current study were to prospectively examine fluidity in sexual attractions and fluidity in sexual orientation identity, and associations with health-related outcomes. Participants were a community-based sample of 45 transgender men, ages 16-51 years, who had recently begun testosterone, and 95 cisgender individuals (53 women, 42 men), ages 18-55 years, who completed surveys either in-person or via mail...
2017: Psychology of Sexual Orientation and Gender Diversity
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