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DHEA AND Testosterone

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https://www.readbyqxmd.com/read/28935582/3%C3%AE-hsd-expression-in-the-cns-of-a-manakin-and-finch
#1
Joy Eaton, Devaleena S Pradhan, Julia Barske, Leonida Fusani, Virginie Canoine, Barney A Schlinger
The prohormone, dehydroepiandrosterone (DHEA) circulates in vertebrate blood with the potential for actions on target tissues including the central nervous system (CNS). Many actions of DHEA require its conversion into more active products, some of which are catalyzed by the enzyme 3β-hydroxysteroid-dehydrogenase/isomerase (3β-HSD). Studies of birds show both expression and activity of 3β-HSD in brain and its importance in regulating social behavior. In oscine songbirds, 3β-HSD is expressed at reasonably high levels in brain, possibly linked to their complex neural circuitry controlling song...
September 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28934376/managing-menopausal-symptoms-and-associated-clinical-issues-in-breast-cancer-survivors
#2
Richard J Santen, Cynthia A Stuenkel, Susan R Davis, JoAnn V Pinkerton, Anne Gompel, Mary Ann Lumsden
Objective: Review evidence to guide the management of menopausal signs and symptoms in women after breast cancer and make recommendations accordingly. Evidence: Randomized controlled clinical trials, observational studies, evidence- based guidelines, and expert opinion from professional societies. Background: Several symptoms and clinical problems associated with estrogen depletion -sleep disorders, vulvovaginal atrophy (VVA), vasomotor symptoms (VMS), mood changes, depressive symptoms, cardiovascular disease, osteopenia and osteoporosis- confront the estimated 9...
August 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28933574/is-there-a-role-for-kisspeptin-in-pathogenesis-of-polycystic-ovary-syndrome
#3
Umit Gorkem, Cihan Togrul, Emine Arslan, Ayla Sargin Oruc, Nuriye Buyukkayaci Duman
AIM: To investigate association of kisspeptin levels in infertile women with different ovarian reserve patterns. MATERIALS AND METHODS: In this prospective cross-sectional study, 157 participants were recruited. The women were divided into three groups: (i) adequate ovarian reserve (AOR) (n = 57), (ii) high ovarian reserve (PCOS) (n = 60), (iii) diminished ovarian reserve (DOR) (n = 40). Weight, height, waist circumference (WC), hip circumference (HC), body mass index (BMI), waist/hip ratio (WHR) were measured...
September 21, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28924479/marked-hyperandrogenicity-in-a-60-year-old-woman
#4
Khaled Aljenaee, Sulaiman Ali, Seong Keat Cheah, Owen MacEneaney, Niall Mulligan, Neil Hickey, Tommy Kyaw Tun, Seamus Sreenan, John H McDermott
Markedly elevated androgen levels can lead to clinical virilization in females. Clinical features of virilization in a female patient, in association with biochemical hyperandrogenism, should prompt a search for an androgen-producing tumor, especially of ovarian or adrenal origin. We herein report the case of a 60-year-old woman of Pakistani origin who presented with the incidental finding of male pattern baldness and hirsutism. Her serum testosterone level was markedly elevated at 21 nmol/L (normal range: 0...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28919553/social-evaluative-threat-with-verbal-performance-feedback-alters-neuroendocrine-response-to-stress
#5
Jenny M Phan, Ekaterina Schneider, Jeremy Peres, Olga Miocevic, Vanessa Meyer, Elizabeth A Shirtcliff
Laboratory stress tasks such as the Trier Social Stress Test (TSST) have provided a key piece to the puzzle for how psychosocial stress impacts the hypothalamic-pituitary-adrenal axis, other stress-responsive biomarkers, and ultimately wellbeing. These tasks are thought to work through biopsychosocial processes, specifically social evaluative threat and the uncontrollability heighten situational demands. The present study integrated an experimental modification to the design of the TSST to probe whether additional social evaluative threat, via negative verbal feedback about speech performance, can further alter stress reactivity in 63 men and women...
September 15, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28890368/cyp17a1-independent-production-of-the-neurosteroid-derived-5%C3%AE-pregnan-3%C3%AE-6%C3%AE-diol-20-one-in-androgen-responsive-prostate-cancer-cell-lines-under-serum-starvation-and-inhibition-by-abiraterone
#6
Antonio G Gomes de Mello Martins, Giuseppe Allegretta, Gerhard Unteregger, Jörg Haupenthal, Jens Eberhard, Michael Hoffmann, Jill A van der Zee, Kerstin Junker, Michael Stöckle, Rolf Müller, Rolf W Hartmann, Carsten-H Ohlmann
CYP17A1-independent intratumoral steroid hormone synthesis is regarded as one possible explanation for resistance to treatment with the CYP17-inhibitor Abiraterone (Abi). The aim of our study was therefore to investigate the steroid metabolism of prostate cancer cells under serum starvation and the effects of Abi treatment. We assessed steroid metabolism in a panel of prostate cancer cells under serum starvation by radioactivity detector-coupled HPLC and HPLC-ESI-ToF-mass spectrometry after treatment with pregnenolone, progesterone and allopregnanolone...
September 7, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28883857/postmenopausal-cognitive-changes-and-androgen-levels-in-the-context-of-apolipoprotein-e-polymorphism
#7
Iwona Bojar, Jarosław Pinkas, Mariusz Gujski, Alfred Owoc, Dorota Raczkiewicz, Kasia Gustaw-Rothenberg
INTRODUCTION: The focus of this study was to assess cognitive functions in relation to androgens and specifically testosterone and dehydroepiandrosterone in postmenopausal women as well as the correlation between cognitive functions and these two androgens according to polymorphism of the apolipoprotein E gene (APOE). MATERIAL AND METHODS: A group of 402 women was recruited to the study (minimum 2 years after the last menstruation, follicle-stimulating hormone (FSH) more than 30 U/ml and no dementia signs on Montreal Cognitive Assessment)...
August 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28875157/sex-hormones-and-quantitative-ultrasound-parameters-at-the-heel-in-men-and-women-from-the-general-population
#8
Konrad Pätzug, Nele Friedrich, Hanna Kische, Anke Hannemann, Henry Völzke, Matthias Nauck, Brian G Keevil, Robin Haring
PURPOSE/INTRODUCTION: The present study investigates potential associations between liquid chromatography-mass spectrometry (LC-MS) measured sex hormones, dehydroepiandrosterone sulphate, sex hormone-binding globulin (SHBG) and bone ultrasound parameters at the heel in men and women from the general population. METHODS: Data from 502 women and 425 men from the population-based Study of Health in Pomerania (SHIP-TREND) were used. Cross-sectional associations of sex hormones including testosterone (TT), calculated free testosterone (FT), dehydroepiandrosterone sulphate (DHEAS), androstenedione (ASD), estrone (E1) and SHBG with quantitative ultrasound (QUS) parameters at the heel, including broadband ultrasound attenuation (BUA), speed of sound (SOS) and stiffness index (SI) were examined by analysis of variance (ANOVA) and multivariable quantile regression models...
December 2017: Bone Reports
https://www.readbyqxmd.com/read/28867888/efficacy-of-combined-cabergoline-and-metformin-compared-to-metformin-alone-on-cycle-regularity-in-patients-with-polycystic-ovarian-disease-with-hyperprolactinemia-a-randomized-clinical-trial
#9
Mervat Ali Mohamed Elsersy
PURPOSE: Polycystic ovarian syndrome (PCOS) is a common reproductive disorder. Increasing serum prolactin in these patients could be detected in both follicular and luteal phase of the normal and stimulated cycles. Hyperprolactinemia affects the hypothalamic-pituitary-ovarian axis causing anovulation and abnormal uterine bleeding. In this study, the efficacy of combined cabergoline and metformin therapy was compared to metformin therapy alone in patients with PCOS on the body mass index, androgen profile and menstrual cycle regulation...
October 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28851333/a-gonadotropin-releasing-hormone-antagonist-reduces-serum-adrenal-androgen-levels-in-prostate-cancer-patients
#10
Yoshiyuki Miyazawa, Yoshitaka Sekine, Takahiro Syuto, Masashi Nomura, Hidekazu Koike, Hiroshi Matsui, Yasuhiro Shibata, Kazuto Ito, Kazuhiro Suzuki
BACKGROUND: Adrenal androgens play an important role in the development of castration-resistant prostate cancer therapeutics. The effect of gonadotropin-releasing hormone (GnRH) antagonists on adrenal androgens has not been studied sufficiently. We measured testicular and adrenal androgen levels in patients treated with a GnRH antagonist. METHODS: This study included 47 patients with histologically proven prostate cancer. All of the patients were treated with the GnRH antagonist degarelix...
August 29, 2017: BMC Urology
https://www.readbyqxmd.com/read/28827070/hydroxylative-activity-of-aspergillus-niger-towards-androst-4-ene-and-androst-5-ene-steroids
#11
Alina Świzdor, Anna Panek, Natalia Milecka-Tronina
Aspergillus niger, one of fungal species most frequently used for experimental and industrial-scale biotransformations of various organic compounds, is generally known to transform steroids at 16β position. In this work, application of the strain A. niger KCH910 to bioconversion of dehydroepiandrosterone (DHEA), androstenediol and testosterone is described, with emphasis on the metabolic steps leading to the products. Evidence from this study indicated that incubated 5-ene steroids underwent bioconversion within two metabolic pathways: oxidation by the action of 3β-HSD (3β-hydroxysteroid dehydrogenase) to 4-ene steroids, and minor allylic hydroxylation to epimeric 7-alcohols...
October 2017: Steroids
https://www.readbyqxmd.com/read/28815018/serum-complexed-and-free-prostate-specific-antigen-levels-are-lower-in-female-elite-athletes-in-comparison-to-control-women
#12
Emma Eklund, Eleftherios P Diamandis, Carla Muytjens, Sarah Wheeler, Anu Mathew, Martin Stengelin, Eli Glezer, Galina Nikolenko, Marshall D Brown, Yingye Zheng, Angelica Lindén Hirschberg
BACKGROUND: We hypothesize that prostate specific antigen (PSA), a protein that it is under regulation by androgens, may be differentially expressed in female elite athletes in comparison to control women. METHODS: We conducted a cross-sectional study of 106 female athletes and 114 sedentary age-matched controls.  Serum from these women was analyzed for complexed prostate specific antigen (cPSA) and free prostate specific antigen (fPSA), by fifth generation assays with limits of detection of around 6 and 140 fg/mL, respectively...
2017: F1000Research
https://www.readbyqxmd.com/read/28800472/phthalate-and-bisphenol-a-exposure-during-in-utero-windows-of-susceptibility-in-relation-to-reproductive-hormones-and-pubertal-development-in-girls
#13
Deborah J Watkins, Brisa N Sánchez, Martha Maria Téllez-Rojo, Joyce M Lee, Adriana Mercado-García, Clara Blank-Goldenberg, Karen E Peterson, John D Meeker
BACKGROUND: Over the past several decades, the age of pubertal onset in girls has shifted downward worldwide. As early pubertal onset is associated with increased risky behavior and psychological issues during adolescence and cardiometabolic disease and cancer in adulthood, this is an important public health concern. Exposure to endocrine disrupting chemicals during critical windows of in utero development may play a role in this trend. Our objective was to investigate trimester-specific phthalate and BPA exposure in relation to pubertal development among girls in the Early Life Exposure in Mexico to Environmental Toxicants (ELEMENT) birth cohort...
August 8, 2017: Environmental Research
https://www.readbyqxmd.com/read/28771887/acsl3-promotes-intratumoral-steroidogenesis-in-prostate-cancer-cells
#14
Toshiro Migita, Ken-Ichi Takayama, Tomohiko Urano, Daisuke Obinata, Kazutaka Ikeda, Tomoyoshi Soga, Satoru Takahashi, Satoshi Inoue
Long-chain acyl-coenzyme A (CoA) synthetase 3 (ACSL3) is an androgen-responsive gene involved in the generation of fatty acyl-CoA esters. ACSL3 is expressed in both androgen-sensitive and castration-resistant prostate cancer (CRPC). However, its role in prostate cancer remains elusive. We overexpressed ACSL3 in androgen-dependent LNCaP cells and examined the downstream effectors of ACSL3. Furthermore, we examined the role of ACSL3 in the androgen metabolism of prostate cancer. ACSL3 overexpression led to upregulation of several genes such as aldo-keto reductase 1C3 (AKR1C3) involved in steroidogenesis, which utilizes adrenal androgen dehydroepiandrosterone sulfate (DHEAS) as substrate, and downregulated androgen-inactivating enzyme UDP-glucuronosyltransferase 2 (UGT2B)...
August 3, 2017: Cancer Science
https://www.readbyqxmd.com/read/28765038/synergistic-effect-of-1%C3%AE-25-dihydroxyvitamin-d3-and-17%C3%AE-estradiol-on-osteoblast-differentiation-of-pediatric-mscs
#15
Jing Li, Bonnie L Padwa, Shuanhu Zhou, Julia Mullokandova, Meryl S LeBoff, Julie Glowacki
Vitamin D is essential for mineral homeostasis and contributes to bone metabolism by stimulating osteoblast differentiation of marrow stromal cells (MSCs). In this study, we used MSCs from pre-pubertal girls and boys to test the hypothesis that 1α,25(OH)2D and 17β-estradiol have synergistic effects on these MSCs, and what mechanism is involved. With IRB approval, we isolated MSCs from discarded excess iliac marrow graft from children undergoing alveolar cleft repair. Plasma was available from 8 female (9...
July 29, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28751368/functional-correlates-of-detailed-body-composition-in-healthy-elderly-subjects
#16
Corinna Geisler, Lisa Schweitzer, Manfred James Müller
Methods of body composition analysis (BCA) are now widely used to characterize health status, i.e. nutritional status, metabolic rates and cardio-metabolic risk factors. However, the functional correlates of individual body components have not been systematically analyzed. A 2-compartment model was assessed by air displacement plethysmographie, detailed body composition (BC)was measured by whole-body magnetic resonance imaging (MRI) in a healthy population of 40 Caucasians aged 65 to 81 years (20 males; body mass index range: 18...
July 27, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28744698/association-of-basal-serum-androgen-levels-with-ovarian-response-and-icsi-cycle-outcome
#17
C Abide Yayla, E Ozkaya, S Kayatas Eser, I Sanverdi, B Devranoglu, T Kutlu
BACKGROUND: The purpose of this study was to assess the predictive value of basal serum testosterone (T) and dehydroepiandrosterone sulfate (DHEAS) levels during follicular phase for ovarian response and outcome in intracytoplasmic sperm injection (ICSI) cycles of women with diminished ovarian reserve. METHODS: We prospectively gathered data of basal serum androgen levels and ICSI cycle characteristics of 120 women with diminished ovarian reserve. Association of basal serum T and DHEAS levels with ovarian response was analyzed...
July 25, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28739331/associations-of-sex-hormones-and-anthropometry-with-the-speaking-voice-profile-in-the-adult-general-population
#18
Lasse Jost, Michael Fuchs, Markus Loeffler, Joachim Thiery, Juergen Kratzsch, Thomas Berger, Christoph Engel
OBJECTIVE: There is evidence that sexual hormone concentrations and anthropometric factors influence the human voice. The goal of this study was to investigate to what extent body mass index (BMI), body height, body weight, breast-to-abdomen-ratio, testosterone, estradiol, dehydroepiandrosterone-sulfate (DHEA-S), follicle-stimulating hormone, and luteinizing hormone are associated with the sound pressure level and the fundamental frequency of the speaking voice in a cross-sectional approach among adults in the general population...
July 21, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28738285/molecular-assessment-characterization-and-differentiation-of-theca-stem-cells-imply-the-presence-of-mesenchymal-and-pluripotent-stem-cells-in-sheep-ovarian-theca-layer
#19
Samane Adib, Mojtaba Rezazadeh Valojerdi
The ability of ovarian theca stem cells to differentiate into oocyte and theca cells may lead to a major advancement in reproductive biology and infertility treatments. However, there is little information about function, growth and differentiation potential of these immature cells. In this study adult sheep theca stem cells (TSCs) characteristics, and differentiation potential into osteocyte-like cells (OSLCs), adipocyte-like cells (ALCs), theca progenitor-like cells (TPCs), and oocyte-like cells (OLCs) were investigated...
July 8, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28710978/relationships-between-pops-biometrics-and-circulating-steroids-in-male-polar-bears-ursus-maritimus-from-svalbard
#20
Tomasz M Ciesielski, Ingunn Tjelta Hansen, Jenny Bytingsvik, Martin Hansen, Elisabeth Lie, Jon Aars, Bjørn M Jenssen, Bjarne Styrishave
The aim of this study was to determine the effects of persistent organic pollutants (POPs) and biometric variables on circulating levels of steroid hormones (androgens, estrogens and progestagens) in male polar bears (Ursus maritimus) from Svalbard, Norway (n = 23). Levels of pregnenolone (PRE), progesterone (PRO), androstenedione (AN), dehydroepiandrosterone (DHEA), testosterone (TS), dihydrotestosterone (DHT), estrone (E1), 17α-estradiol (αE2) and 17β-estradiol (βE2) were quantified in polar bear serum by gas chromatography tandem mass spectrometry (GC-MS/MS), while POPs were measured in plasma...
November 2017: Environmental Pollution
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