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https://www.readbyqxmd.com/read/27907978/comparison-of-the-single-dose-pharmacokinetics-pharmacodynamics-and-safety-of-two-novel-oral-formulations-of-dimethandrolone-undecanoate-dmau-a-potential-oral-male-contraceptive
#1
R Ayoub, S T Page, R S Swerdloff, P Y Liu, J K Amory, A Leung, L Hull, D Blithe, A Christy, J H Chao, W J Bremner, C Wang
Dimethandrolone (DMA, 7α,11β-dimethyl-19-nortestosterone) has both androgenic and progestational activities, ideal properties for a male hormonal contraceptive. In vivo, dimethandrolone undecanoate (DMAU) is hydrolyzed to DMA. We showed previously that single oral doses of DMAU powder in capsule taken with food are well tolerated and effective at suppressing both LH and testosterone (T), but absorption was low. We compared the pharmacokinetics and pharmacodynamics of two new formulations of DMAU, in castor oil and in self-emulsifying drug delivery systems (SEDDS), with the previously tested powder formulation...
December 1, 2016: Andrology
https://www.readbyqxmd.com/read/27903287/high-content-imaging-quantification-of-multiple-in-vitro-human-neurogenesis-events-after-neurotoxin-exposure
#2
Xian Wu, Anirban Majumder, Robin Webb, Steven L Stice
BACKGROUND: Our objective was to test neural active compounds in a human developmental neurotoxicity (DNT) model that represents neural tube stages of vulnerability. Previously we showed that 14 days in vitro (DIV 14) was sufficient to generate cryopreserved neuronal cells for post thaw neurite recovery assays. However, short exposure and assessment may not detect toxicants that affect an early neurogenesis continuum, from a mitotic human neural progenitor (hNP) cell population through the course of neurite outgrowth in differentiating neurons...
December 1, 2016: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27901249/depression-sexuality-and-fibromyalgia-syndrome-clinical-findings-and-correlation-to-hematological-parameters
#3
Bruna Alves, Telma M Zakka, Manoel J Teixeira, Helena H Kaziyama, Jose T T Siqueira, Silvia R D T Siqueira
Objective: To investigate sexuality and depression in women with FM compared with controls and to correlate the findings with hematological parameters. Methods: 33 women with FM and 19 healthy women were included and evaluated with the following instruments: Female Sexual Function Index, Beck Inventory, Visual Analogue Scale, medical history and laboratory exams. Results: The prevalence of sexual dysfunction (P = 0.007) and depression (P < 0...
November 2016: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/27901247/anabolic-steroids-for-rehabilitation-after-hip-fracture-in-older-people
#4
Vaqas Farooqi, Maayken E L van den Berg, Ian D Cameron, Maria Crotty
BACKGROUND: Hip fracture occurs predominantly in older people, many of whom are frail and undernourished. After hip fracture surgery and rehabilitation, most patients experience a decline in mobility and function. Anabolic steroids, the synthetic derivatives of the male hormone testosterone, have been used in combination with exercise to improve muscle mass and strength in athletes. They may have similar effects in older people who are recovering from hip fracture. OBJECTIVES: To examine the effects (primarily in terms of functional outcome and adverse events) of anabolic steroids after surgical treatment of hip fracture in older people...
September 2016: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/27898988/lipid-accumulation-product-lap-as-an-index-of-metabolic-and-hormonal-disorders-in-aging-men
#5
I Rotter, A Rył, A Szylińska, W Pawlukowska, A Lubkowska, M Laszczyńska
Lipid accumulation product (LAP) is an index used for evaluating lipid overaccumulation in adults. Our study aimed at assessing associations between LAP and metabolic syndrome (MetS) and its components, age-related testosterone deficiency syndrome (TDS), low-density cholesterol (LDL), as well as HOMA-IR (insulin resistance ratio), insulin level in non-diabetics and total testosterone (TT), estradiol E2, dehydroepiandrosterone sulphate (DHEAs) and sex hormone-binding globulin (SHBG) in aging men.313 men aged 50-75 were surveyed with regard to the prevalence of diabetes (T2DM) and hypertension (HT)...
November 29, 2016: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/27898358/the-roles-of-testosterone-and-cortisol-in-friendship-formation
#6
Sarah Ketay, Keith M Welker, Richard B Slatcher
Although research has investigated the neuroendocrine correlates of romantic relationships, the neuroendocrine correlates of friendship formation are largely unexplored. In two conditions, participants' salivary testosterone and cortisol were measured before and after a high versus low closeness activity with another same-sex participant. In the high closeness task, participants took turns answering questions that fostered increases in self-disclosure. The low closeness task fostered low levels of self-disclosure...
November 18, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27891109/pulling-rank-military-rank-affects-hormone-levels-and-fairness-in-an-allocation-experiment
#7
Benjamin Siart, Lena S Pflüger, Bernard Wallner
Status within social hierarchies has great effects on the lives of socially organized mammals. Its effects on human behavior and related physiology, however, is relatively little studied. The present study investigated the impact of military rank on fairness and behavior in relation to salivary cortisol (C) and testosterone (T) levels in male soldiers. For this purpose 180 members of the Austrian Armed Forces belonging to two distinct rank groups participated in two variations of a computer-based guard duty allocation experiment...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27888021/heightened-aggressive-behavior-in-mice-deficient-in-aldo-keto-reductase-1a-akr1a
#8
Takujiro Homma, Ryusuke Akihara, Satoshi Okano, Mototada Shichiri, Yasukazu Yoshida, Ken-Ichi Yamada, Satoshi Miyata, Osamu Nakajima, Junichi Fujii
Aldehyde reductase (Akr1a) is involved in the synthesis of ascorbic acid (AsA) which may play a role in social behavior. In the current study, we performed analyses on Akr1a-deficient (Akr1a(-/-)) mice that synthesize about 10% as much AsA as wild-type mice from the viewpoint of intermale aggression. The use of the resident-intruder test revealed that the Akr1a(-/-) mice exhibited more aggressive phenotypes than wild-type control mice. Unexpectedly, however, the oral administration of additional AsA failed to reduce the aggressive behavior of Akr1a(-/-) mice, suggesting that the heightened aggression was independent of AsA biosynthesis...
November 22, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27883172/can-an-intervention-with-testosterone-and-nutritional-supplement-improve-the-frailty-level-of-under-nourished-older-people
#9
O Theou, I Chapman, L Wijeyaratne, C Piantadosi, K Lange, V Naganathan, P Hunter, I D Cameron, K Rockwood, R Visvanathan
OBJECTIVE: To examine whether a testosterone and a high calorie nutritional supplement intervention can reduce frailty scores in undernourished older people using multiple frailty tools. DESIGN: Randomized controlled trial. SETTING/PARTICIPANTS: 53 community-dwelling, undernourished men and women aged >65 years from South Australia, Victoria and New South Wales. INTERVENTION: Intervention group received oral testosterone undecanoate and a high calorie supplement (2108-2416 kJ/day) whereas the control group received placebo testosterone and low calorie supplement (142-191 kJ/day)...
2016: Journal of Frailty & Aging
https://www.readbyqxmd.com/read/27879963/hypogonadism-and-non-alcoholic-fatty-liver-disease
#10
Gesthimani Mintziori, Pavlos Poulakos, Christos Tsametis, Dimitrios G Goulis
Non-alcoholic fatty liver disease (NAFLD) is more common in men than in women. Thus, it has been suggested that sex steroids do have a role in the development of NAFLD. The aim of the current paper is to illustrate the association between NAFLD and hypogonadism, by reviewing data derived from both human and animal studies. The prevalence of NAFLD is high in men with hypogonadism, including those with idiopathic hypogonadotropic hypogonadism (IHH), as well as in women in post- menopause, those under estrogen receptor antagonist treatment or women with Turner syndrome...
November 23, 2016: Minerva Endocrinologica
https://www.readbyqxmd.com/read/27878497/role-of-tissue-specific-stem-and-progenitor-cells-in-the-regeneration-of-the-pancreas-and-testicular-tissue-in-diabetic-disorders
#11
E G Skurikhin, A V Pakhomova, N N Ermakova, O V Pershina, V A Krupin, E S Pan, A I Kudryashova, L A Ermolaeva, A M Dygai
Using the model of hypogonadism in C57Bl/6 male mice, we showed that injection of streptozotocin to newborn animals and high-fat diet induced serum IFN-γ and IL-17 elevation, glucose metabolism disturbances, insulin resistance, destructive changes of the Langerhans islets (deficit of PDX1(+)β cells), while the number of oligopotent β cell precursors (CD45(-)TER119(-)CD133(+)CD49f(low)) increased. Diabetes played the role of an inducer of testicular tissue inflammation (pan-hemopoietic cell infiltration, increase of IL-2, IL-17, and IL-23 content) and reproductive system disturbances in mice (decrease in free testosterone concentration, suppression of spermatogenesis, and infertility)...
November 23, 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27875569/are-men-s-perceptions-of-sexually-dimorphic-vocal-characteristics-related-to-their-testosterone-levels
#12
Michal Kandrik, Amanda C Hahn, Joanna Wincenciak, Claire I Fisher, Katarzyna Pisanski, David R Feinberg, Lisa M DeBruine, Benedict C Jones
Feminine physical characteristics in women are positively correlated with markers of their mate quality. Previous research on men's judgments of women's facial attractiveness suggests that men show stronger preferences for feminine characteristics in women's faces when their own testosterone levels are relatively high. Such results could reflect stronger preferences for high quality mates when mating motivation is strong and/or following success in male-male competition. Given these findings, the current study investigated whether a similar effect of testosterone occurs for men's preferences for feminine characteristics in women's voices...
2016: PloS One
https://www.readbyqxmd.com/read/27872877/data-on-spermatogenesis-in-rat-males-gestationally-exposed-to-bisphenol-a-and-high-fat-diets
#13
Pheruza Tarapore, Max Hennessy, Dan Song, Jun Ying, Bin Ouyang, Vinothini Govindarajah, Yuet-Kin Leung, Shuk-Mei Ho
This data article contains supporting information regarding the research article entitled "High butter-fat diet and bisphenol A additively impair male rat spermatogenesis" (P. Tarapore, M. Hennessy, D. Song, J. Ying, B. Ouyang, V. Govindarajah, et al.,) [1]. Sprague-Dawley females were fed AIN, high fat butter, 17α-ethinyl estradiol, or high fat butter plus four bisphenol A doses (2500 µg/kg bw-d, 250 µg/kg bw-d, 25 µg/kg bw-d, and 2.5 µg/kg bw-d) before and during pregnancy. All diets were switched to AIN after the pups were born...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27871978/differences-in-testosterone-and-its-precursors-by-sex-of-the-offspring-in-meconium
#14
Alexander J Frey, Bo Y Park, Emily R Schriver, Daniel R Feldman, Samuel Parry, Lisa A Croen, Daniele M Fallin, Irva Hertz-Picciotto, Craig J Newschaffer, Nathaniel W Snyder
Prenatal metabolism exerts profound effects on development. The first stool of the newborn, meconium, provides a window into the prenatal metabolic environment. The objective of this study was to examine the feasibility of meconium as a novel matrix to quantify prenatal steroid levels. We quantified parameters of analytical interest regarding the use of meconium, including sample stability. We hypothesized that meconium steroid content would differ by sex, prompting analysis of meconium to test effects of prenatal steroid metabolism...
November 18, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27871670/convergence-of-sex-differences-and-the-neuroimmune-system-in-autism-spectrum-disorder
#15
REVIEW
Margaret M McCarthy, Christopher L Wright
The male bias in autism spectrum disorder incidence is among the most extreme of all neuropsychiatric disorders, yet the origins of the sex difference remain obscure. Developmentally, males are exposed to high levels of testosterone and its byproduct, estradiol. Together these steroids modify the course of brain development by altering neurogenesis, cell death, migration, differentiation, dendritic and axonal growth, synaptogenesis, and synaptic pruning, all of which can be deleteriously impacted during the course of developmental neuropsychiatric disorders...
October 11, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27867884/comparison-clinical-and-metabolic-effects-of-metformin-and-pioglitazone-in-polycystic-ovary-syndrome
#16
Karoon Shahebrahimi, Nasrin Jalilian, Nasrin Bazgir, Mansour Rezaei
INTRODUCTION: Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders in women. PCOS comprises a broad spectrum of anomalies, including hyperandrogenism, chronic anovulation, obesity, and infertility. Insulin resistance and its compensatory hyperinsulinemia play a key role in the pathogenicity of PCOS. This study compares the effects of 2 types of insulin sensitizer drugs, metformin and pioglitazone, on clinical, metabolic, and endocrine characteristics of women with PCOS...
November 2016: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27865788/testosterone-and-immune-reproductive-tradeoffs-in-healthy-women
#17
Tierney K Lorenz, Julia R Heiman, Gregory E Demas
Although testosterone (T) has been characterized as universally immunosuppressive across species and sexes, recent ecoimmunology research suggests that T's immunomodulatory effects (enhancing/suppressing) depend on the organism's reproductive context. Very little is known about the immune effects of T in healthy females, and even less about how reproductive effort modulates the immune effects of T in humans. We investigated how the interaction between endogenous T and sexual activity predicted menstrual cycle-related changes in several measures of immunity: inflammation (indexed by interleukin-6, IL-6), adaptive immunity (indexed by immunoglobulin A, IgA), and functional immunity (indexed by bactericidal assay)...
November 17, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27861893/synaptopodin-is-regulated-by-aromatase-activity
#18
Lars Fester, Lepu Zhou, Christiana Ossig, Jan Labitzke, Corinna Bläute, Manuela Bader, Günter Vollmer, Hubertus Jarry, Gabriele M Rune
Locally synthesized estradiol plays an important role in synaptic plasticity in the hippocampus. We have previously shown that in hippocampal neurons, activity of the enzyme aromatase, which converts testosterone to estradiol, is reduced via Ca(2+) -dependent phosphorylation. Synaptopodin is a highly estrogen responsive protein, and it has been shown that it is an important regulator of synaptic plasticity, mediated by its close association to internal calcium stores. In this study, we show that the expression of synaptopodin is stronger in the hippocampus of female animals than in that of male animals...
November 8, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27861588/endogenous-testosterone-and-exogenous-oxytocin-modulate-attentional-processing-of-infant-faces
#19
Sarah K C Holtfrerich, Katharina A Schwarz, Christian Sprenger, Luise Reimers, Esther K Diekhof
Evidence indicates that hormones modulate the intensity of maternal care. Oxytocin is known for its positive influence on maternal behavior and its important role for childbirth. In contrast, testosterone promotes egocentric choices and reduces empathy. Further, testosterone decreases during parenthood which could be an adaptation to increased parental investment. The present study investigated the interaction between testosterone and oxytocin in attentional control and their influence on attention to baby schema in women...
2016: PloS One
https://www.readbyqxmd.com/read/27860310/engineering-mycobacterium-smegmatis-for-testosterone-production
#20
Lorena Fernández-Cabezón, Beatriz Galán, José L García
A new biotechnological process for the production of testosterone (TS) has been developed to turn the model strain Mycobacterium smegmatis suitable for TS production to compete with the current chemical synthesis procedures. We have cloned and overexpressed two genes encoding microbial 17β-hydroxysteroid: NADP 17-oxidoreductase, from the bacterium Comamonas testosteroni and from the fungus Cochliobolus lunatus. The host strains were M. smegmatis wild type and a genetic engineered androst-4-ene-3,17-dione (AD) producing mutant...
November 17, 2016: Microbial Biotechnology
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