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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
#1
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/29324286/digit-ratio-2d-4d-and-circulating-testosterone-oestradiol-and-progesterone-levels-across-the-menstrual-cycle
#2
Gareth Richards, Magdalena Klimek, Grazyna Jasienska, Urszula M Marcinkowska
BACKGROUND: Digit ratio (2D:4D) is used by researchers as an indicator of prenatal sex hormone exposure. Two previous studies have examined associations between 2D:4D and circulating sex steroid concentrations across the menstrual cycle in adult females. One reported that digit ratio correlated positively with oestradiol levels, whereas the other found no such effect; neither observed significant associations with progesterone. AIMS: To examine associations between 2D:4D, as well as asymmetry (i...
January 8, 2018: Early Human Development
https://www.readbyqxmd.com/read/29323427/duration-of-androgen-deprivation-therapy-and-nadir-of-testosterone-at-20-ng-dl-predict-testosterone-recovery-to-supracastrate-level-in-prostate-cancer-patients-who-received-external-beam-radiotherapy
#3
Akinori Takei, Shinichi Sakamoto, Ken Wakai, Takaaki Tamura, Yusuke Imamura, Minhui Xu, Maihulan Maimaiti, Koji Kawamura, Takashi Imamoto, Akira Komiya, Koichiro Akakura, Tomohiko Ichikawa
OBJECTIVES: To determine the predictors of testosterone recovery after termination of androgen deprivation therapy in high/intermediate-risk prostate cancer patients receiving external beam radiation therapy with neoadjuvant and adjuvant androgen deprivation therapy. METHODS: A total of 82 patients who underwent external beam radiation therapy with androgen deprivation therapy for prostate cancer were retrospectively analyzed. Serum testosterone levels after androgen deprivation therapy terminations were studied...
January 11, 2018: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/29318656/circadian-genes-and-risk-of-prostate-cancer-in-the-prostate-cancer-prevention-trial
#4
Lisa W Chu, Cathee Till, Baiyu Yang, Catherine M Tangen, Phyllis J Goodman, Kai Yu, Yong Zhu, Summer Han, Ashraful M Hoque, Christine Ambrosone, Ian Thompson, Robin Leach, Ann W Hsing
Circadian genes have been considered as a possible biological mechanism for the observed relationship between circadian rhythm disruptions and increased risk of hormone-related cancers. In the current study, we investigated the relationship between circadian gene variants and prostate cancer risk and whether reducing bioavailable testosterone modifies the circadian genes-prostate cancer relationship. We conducted a nested case-control study among Caucasian men in the Prostate Cancer Prevention Trial (PCPT), a randomized placebo-controlled clinical trial to assess if finasteride (an androgen bioactivation inhibitor) could prevent prostate cancer...
January 10, 2018: Molecular Carcinogenesis
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
#5
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/29315457/evaluation-of-sex-hormones-and-sperm-parameters-in-male-epileptic-patients
#6
L Ocek, H Tarhan, F I Uludağ, A Sarıteke, C Köse, A Colak, F Zorlu, Y Zorlu
OBJECTIVES: The aim of this study was to investigate the effect of carbamazepine (CBZ) and sodium valproate (VPA) monotherapy on sexual functions, sex hormones, and semen analysis and quality in male patients with epilepsy. METHODS: A total of 59 male patients with epilepsy, of which 30 were on VPA monotherapy and 29 were on CBZ monotherapy, were included in the study between January 2015 and March 2016. A control group was established with 30 healthy males. Luteinizing hormone (LH), follicle-stimulating hormone (FSH), prolactin (PRL), free testosterone (fT), estradiol (E2), sex hormone-binding globulin (SHBG) levels and bioactive testosterone (BAT)/bioactive estradiol (BAE), and BAT/LH ratio were studied in groups...
January 7, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29306775/longitudinal-change-instead-of-baseline-testosterone-predicts-depressive-symptoms
#7
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/29305800/suspected-ontogeny-of-a-recently-described-hypo-androgenic-pcos-like-phenotype-with-advancing-age
#8
Norbert Gleicher, Vitaly A Kushnir, Sarah K Darmon, Qi Wang, Lin Zhang, David F Albertini, David H Barad
BACKGROUND: A recent report described a new PCOS-like phenotype in lean older infertile women, and was characterized by high age-specific anti-Müllerian hormone (AMH) but hypo- rather than the expected hyper-androgenism. The hypo-androgenism was, furthermore, characterized of, likely, adrenal origin and autoimmune etiology. PATIENTS AND METHODS: We extracted data on 708 consecutive infertility patients, and separated them into three age-strata, <35, 36-42, and >42 years...
January 6, 2018: Endocrine
https://www.readbyqxmd.com/read/29303051/a-novel-function-of-geranylgeraniol-in-regulating-testosterone-production
#9
Hsin-Jung Ho, Hitoshi Shirakawa, Puspo E Giriwono, Asagi Ito, Michio Komai
Isoprenoids play widely differing roles in various physiological processes in animals and plants. Geranylgeraniol (GGOH) is an isoprenoid found in plants, and is an important metabolic derivative in the isoprenoid/cholesterol synthesis pathway. Earlier studies focused on GGOH's ability to improve the side effects of bisphosphonate therapy by regulating the mevalonate pathway. More recently, the mevalonate pathway-independent effects of GGOH have been described, including anti-inflammatory, anti-tumorigenic, and neuroprotective activities...
January 5, 2018: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29299890/comparison-of-the-effects-of-clofibrate-and-silafibrate-on-sperm-parameters-quality-and-sex-hormones-in-male-rats
#10
Masoud Delashoub, Mojtaba Ziaee, Arash Khorrami, Seyed Mahdi Banan-Khojasteh
PURPOSE: Fibrates are drugs widely used for the treatment of hyperlipidemic disorders. Previous studies on a novel analogue of clofibrate, called silafibrate, have shown good lipid lowering effects. This study was designed to assess the role of silafibrate as a peroxisome proliferator-activated receptors (PPARs) agonist on sperm health and spermatogenesis in adult male rats. MATERIAL AND METHODS: Seventy male Wistar rats were randomly allocated into 7 groups: Cl-10, Cl-20, and Cl-40 mg/kg/day (clofibrate); Si-10, Si-20, and Si-40 mg/kg/day (silafibrate); and C, control...
January 3, 2018: Urology Journal
https://www.readbyqxmd.com/read/29297822/early-onset-of-the-reproductive-season-in-captive-white-tailed-deer-odocoileus-virginianus-veraecrucis-in-eastern-mexico
#11
Concepción Ahuja-Aguirre, Omar Pérez-Gutiérrez, Lorena López-deBuen, Susana Rojas-Maya, Felipe Montiel-Palacios
The white-tailed deer ( Odocoileus virginianus) inhabits a wide latitudinal range in the Americas. Deer species dwelling throughout wide latitudinal ranges have developed subspecies with variations in their reproductive seasonality. In northern subspecies of white-tailed deer, such as those from Canada and the United States, the breeding season occurs from October through December. Odocoileus virginianus veraecrucis is a subspecies that inhabits eastern Mexico, and because its reproductive season has not been studied, it is believed to be similar to that from northern subspecies...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
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
#12
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/29279215/testosterone-and-human-behavior-the-role-of-individual-and-contextual-variables
#13
REVIEW
Justin M Carré, John Archer
The study of testosterone and aggression originated in experimental studies of animals, showing a direct causal link in some species. Human studies showed an overall weak correlation between testosterone and aggression. A theoretical framework ('the challenge hypothesis') enabled testosterone-behavior interactions in humans to be framed within a theory that emphasized hormonal responses to competition influencing subsequent aggressive behavior. The short-term administrations of testosterone to young women and to young men showed influences on behavioral and neural processes associated with aggression...
February 2018: Current Opinion in Psychology
https://www.readbyqxmd.com/read/29277698/interactions-between-observer-and-stimuli-fertility-status-endocrine-and-perceptual-responses-to-intrasexual-vocal-fertility-cues
#14
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/29275169/testosterone-induces-hyporesponsiveness-by-interfering-with-ip3-receptors-in-guinea-pig-airway-smooth-muscle
#15
Luis M Montaño, Edgar Flores-Soto, Jorge Reyes-García, Verónica Díaz-Hernández, Abril Carbajal-García, Elías Campuzano-González, G Lizbeth Ramírez-Salinas, Marco A Velasco-Velázquez, Bettina Sommer
Asthma symptoms have been associated with sex steroids. During childhood, this illness seems more frequent in boys than in girls and this tendency reverts in puberty when it is more severe in women. Testosterone (TES), at supraphysiological concentrations, relaxed pre-contracted airway smooth muscle, but its effects at physiological concentrations have not been thoroughly studied. We explored this possibility in guinea pig tracheal smooth muscle. In myocytes TES (10 nM) abolished carbachol (CCh)-induced intracellular Ca2+ concentration ([Ca2+]i) increment...
December 21, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29275061/deterioration-of-chronotropic-responses-and-heart-rate-recovery-indices-in-men-with-erectile-dysfunction
#16
Faruk Kucukdurmaz, Gurkan Acar, Sefa Resim
INTRODUCTION: Erectile dysfunction (ED) and cardiovascular (CV) diseases share common risk factors and ED has been accepted as an early manifestation of CV disease. Exercise stress testing (EST) is used to evaluate CV functions in men with ED. Low exercise workload, a slower heart rate recovery (HRR) after exercise, and inability to increase heart rate during EST (chronotropic incompetence) are independent negative predictors of adverse CV outcomes. AIM: To assess the association among EST parameters, ED, and testosterone levels...
December 20, 2017: Sexual Medicine
https://www.readbyqxmd.com/read/29272977/association-between-serum-levels-of-testosterone-and-biomarkers-of-subclinical-atherosclerosis
#17
Babak Rezanezhad, Rasmus Borgquist, Ronnie Willenheimer, Saad Elzanaty
OBJECTIVE: To investigate the association between serum levels of testosterone and biomarkers of subclinical atherosclerosis based on data from 119 middle-aged men of the general population. METHODS: Testosterone, Apolipoprotein A-1 (ApoA-1), Apolipoprotein B (ApoB), Apolipoprotein B-to-Apolipoprotein A-1 ratio (ApoB-to-ApoA-1), high-sensitive C-reactive protein (hsCRP), and fibrinogen levels were measured. Data were also gathered based on age, BMI, waist circumference, smoking, alcohol consumption, and family history of cardiovascular diseases...
December 22, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/29259494/leydig-cell-tumor-of-the-testis-presenting-with-azoospermia
#18
Hatsuki Hibi, Kyoko Yamashita, Makoto Sumitomo, Yoshimasa Asada
Case: A case of Leydig cell tumor, associated with azoospermia, is presented. Outcome: The levels of sex hormones obviously were decreased, including luteinizing hormone (LH) and follicle-stimulating hormone (FSH), with elevated testosterone. Computed tomography revealed no adrenal gland tumor, but a significant calcification in the right scrotal content was observed. He received a right radical orchiectomy and then he was unable to ejaculate. An endocrine panel revealed significantly decreased levels of testosterone and the low LH level had remained...
October 2017: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29258367/evaluation-of-prolonged-use-of-statins-on-the-clinical-and-biochemical-abnormalities-and-ovulation-dysfunction-in-single-young-women-with-polycystic-ovary-syndrome
#19
Emaduldin Seyam, Saad Al Gelany, Ahmed Abd Al Ghaney, Marwa Abd Allah Mohamed, Ayman Moheb Youseff, Emad Moussa Ibrahim, Eissa M Khalifa, Enas Hefzy
OBJECTIVE: The aim of the current work was to investigate the effects of prolonged use of Statins on the clinical and biochemical abnormalities and ovulation dysfunction in young single women with polycystic ovary syndrome (PCOS). PATIENTS AND METHODS: It was a randomized, double-blind, placebo-controlled study. Where 200 single young women with PCOS were randomized into either 100 (n = 100) women using Simvastatin 20 mg daily considered as group A (study group), or 100 (n = 100) women using placebo and considered as group B (control group), for six months treatment period...
December 19, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29250843/insulin-resistance-improvement-by-cinnamon-powder-in-polycystic-ovary-syndrome-a-randomized-double-blind-placebo-controlled-clinical-trial
#20
Mahdie Hajimonfarednejad, Majid Nimrouzi, Mojtaba Heydari, Mohammad Mehdi Zarshenas, Mohammad Javad Raee, Bahia Namavar Jahromi
Our aim is to assess the effect of cinnamon powder capsules on insulin resistance, anthropometric measurements, glucose and lipid profiles, and androgens of women with polycystic ovarian syndrome (PCOS). Out of 80 women that were diagnosed as PCOS by Rotterdam Criteria, 66 were enrolled in this randomized double-blind placebo-controlled clinical trial. All of the PCOS women were taking medroxy progesterone acetate 10 mg/day for the last 10 days of their menstrual cycles. The cases were randomly allocated to 2 groups...
December 18, 2017: Phytotherapy Research: PTR
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