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https://www.readbyqxmd.com/read/29342266/causes-patterns-and-severity-of-androgen-excess-in-1205-consecutively-recruited-women
#1
Yasir S Elhassan, Jan Idkowiak, Karen Smith, Miriam Asia, Helena Gleeson, Rachel Webster, Wiebke Arlt, Michael W O'Reilly
Context: Androgen excess in women is predominantly due to underlying polycystic ovary syndrome (PCOS). However there is a lack of clarity regarding patterns and severity of androgen excess that should be considered predictive of non-PCOS pathology. Objective: We examined the diagnostic utility of simultaneous measurement of serum dehydroepiandrosterone sulfate (DHEAS), androstenedione (A4) and testosterone (T) to delineate biochemical signatures and cut-offs predictive of non-PCOS disorders in women with androgen excess...
January 12, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29342161/association-between-circulating-levels-of-sex-steroid-hormones-and-esophageal-adenocarcinoma-in-the-finbar-study
#2
Jessica L Petrick, Roni T Falk, Paula L Hyland, Patrick Caron, Ruth M Pfeiffer, Shannon N Wood, Sanford M Dawsey, Christian C Abnet, Philip R Taylor, Chantal Guillemette, Liam J Murray, Lesley A Anderson, Michael B Cook
BACKGROUND: Esophageal adenocarcinoma (EA) is characterized by a strong male predominance. Sex steroid hormones have been hypothesized to underlie this sex disparity, but no population-based study to date has examined this potential association. METHODS: Using mass spectrometry and ELISA, we quantitated sex steroid hormones and sex hormone binding globulin, respectively, in plasma from males- 172 EA cases and 185 controls-within the Factors Influencing the Barrett/Adenocarcinoma Relationship (FINBAR) Study, a case-control investigation conducted in Northern Ireland and Ireland...
2018: PloS One
https://www.readbyqxmd.com/read/29341930/activation-of-estrogen-receptor-beta-er%C3%AE-regulates-the-expression-of-n-cadherin-e-cadherin-and-%C3%AE-catenin-in-androgen-independent-prostate-cancer-cells
#3
Rafael de Souza Silva, Ana Paola G Lombardi, Deborah Simão de Souza, Carolina M Vicente, Catarina S Porto
The aim of the present study was to investigate the impact of the activation of estrogen receptors on expression and localization of N-cadherin, E-cadherin and non-phosphorylated β-catenin in androgen-independent prostate cancer cells (PC-3 and DU-145) and in human post pubertal prostate epithelial cells (PNT1A). Expression of N-cadherin was detected in PNT1A and PC-3 cells, but not in DU-145 cells. E-cadherin was detected only in DU-145 cells and β-catenin was detected in all cells studied. N-cadherin and β-catenin were located preferentially in the cellular membrane of PNT1A cells and in the cytoplasm of PC-3 cells...
January 13, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29340907/harnessing-a-different-dependency-how-to-identify-and-target-androgen-receptor-positive-versus-quadruple-negative-breast-cancer
#4
REVIEW
Jessica L Christenson, Jane B Trepel, Haythem Y Ali, Sunmin Lee, Joel R Eisner, Edwina S Baskin-Bey, Anthony D Elias, Jennifer K Richer
The androgen receptor (AR) is a promising therapeutic target for a subset of triple-negative breast cancers (TNBCs) in which AR is expressed. However, the mechanistic action of AR and the degree to which primary and metastatic tumors depend on AR, both before and after conventional treatment, remain to be defined. We discuss preclinical and clinical data for AR+ TNBC, the difficulties in monitoring AR protein levels, new methods for determining AR status, the influence of AR on "stemness" in the context of TNBC, the role of combined inhibition of sex steroid production and AR, and the role of AR in regulation of the immune system...
January 16, 2018: Hormones & Cancer
https://www.readbyqxmd.com/read/29340845/dihydrotestosterone-treatment-accelerates-autograft-reversal-sciatic-nerve-regeneration-in-rats
#5
Xiaofan Yang, Pingping Xue, Ruozheng Wei, Xin Liu, Xiang Xu, Zhenyu Liu, Yanhua Chen, Zhenbing Chen
Neuroactive steroids such as progesterone, testosterone, and their derivatives have been widely studied for their neuroprotective roles in the nervous system. Autologous nerve transplantation is considered as the gold standard repair technique when primary suture is impossible; nevertheless, this method is far from ideal. In this study, we aimed to explore the impact of dihydrotestosterone (DHT), a 5α-reduced derivative of testosterone, on the recovery of peripheral nerve injury treated with autologous nerve transplantation...
January 16, 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29340160/stereotactic-body-radiation-therapy-for-the-treatment-of-oligoprogression-on-androgen-receptor-targeted-therapy-in-castration-resistant-prostate-cancer
#6
Thu-Cuc Nguyen, Ravneet Bajwa, Shahla Bari, Azka Ali, William Paul Skelton, Roland-Austin Federico, Rohit Bishnoi, Justin W Wray, Robert A Zlotecki, Long H Dang, Jameel Muzaffar
Castration-resistant prostate cancer is an incurable disease. To date, six agents-abiraterone, enzalutamide, docetaxel, cabazitaxel, radium-223 and sipuleucel-T- have shown clinical efficacy in phase III clinical trials, leading to their FDA approval. Patients are typically sequenced through most or all of these agents, and then eventually succumb to their disease. Development of new treatments remains an unmet need. We report a case of a patient who progressed on enzalutamide with a single enlarging metastatic lesion, was treated with ablative stereotactic body radiation therapy while maintaining the same systemic treatment, who then had durable complete remission...
January 2018: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/29339807/overexpression-of-%C3%AE-1-6-fucosyltransferase-in-the-development-of-castration-resistant-prostate-cancer-cells
#7
Naseruddin Höti, Shuang Yang, Yingwei Hu, Punit Shah, Michael C Haffner, Hui Zhang
Glycosylation is recognized as one of the most common modifications on proteins. Recent studies have shown that aberrant expression of α (1,6) fucosyltransferase (FUT8), which catalyzes the transfer of fucose from GDP-fucose to core-GlcNAc of the N-linked glycoproteins, modulates cellular behavior that could lead to the development of aggressive prostate cancer. While the relationship between the abnormal expression of FUT8 and glycoprotein fucosylation in different prostate cancer cells has been demonstrated, there is no evidence that shows dysregulated fucosylation might be involved in prostate cancer progression from androgen-dependent to castration-resistant prostate cancer...
January 16, 2018: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/29339527/diminished-androgen-and-estrogen-receptors-and-aromatase-levels-in-hypogonadal-diabetic-men-reversal-with-testosterone
#8
Husam Ghanim, Sandeep Dhindsa, Sanaa Abuaysheh, Manav Batra, Nitesh Kuhadiya, Antoine Makdissi, Ajay Chaudhuri, Paresh Dandona
AIMS: One third of males with type 2 diabetes have hypogonadism, characterized by low total and free testosterone concentrations. We hypothesized that this condition is associated with a compensatory increase in the expression of androgen receptors (AR) and that testosterone replacement reverses these changes. We also measured estrogen receptor and aromatase expression. MATERIALS AND METHODS: This is a randomized double-blind placebo controlled trial. 32 hypogonadal and 32 eugonadal men with type 2 diabetes were recruited...
January 16, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29339313/the-human-body-odor-compound-androstadienone-increases-neural-interference-coupled-to-higher-behavioral-costs-during-an-emotional-stroop-task
#9
Jonas Hornung, Lydia Kogler, Michael Erb, Jessica Freiherr, Birgit Derntl
The androgen derivative androstadienone (AND) is a substance found in human sweat and thus may act as human chemosignal. With the current experiment, we aimed to explore in which way AND affects interference processing during an emotional Stroop task which used human faces as target and emotional words as distractor stimuli. This was complemented by functional magnetic resonance imaging (fMRI) to unravel the neural mechanism of AND-action. Based on previous accounts we expected AND to increase neural activation in areas commonly implicated in evaluation of emotional face processing and to change neural activation in brain regions linked to interference processing...
January 12, 2018: NeuroImage
https://www.readbyqxmd.com/read/29339197/differential-insulin-and-steroidogenic-signaling-in-insulin-resistant-and-non-insulin-resistant-human-luteinized-granulosa-cells-a-study-in-pcos-patients
#10
Muskaan Belani, Abhilash Deo, Preeti Shah, Manish Banker, Pawan Singal, Sarita Gupta
Insulin resistance (IR) is one of the significant aberrations in polycystic ovarian syndrome (PCOS), however is only observed in 70%-80% of obese PCOS and 20%-25% of lean PCOS. Hyperinsulinemia accompanies PCOS-IR along with hyperandrogenemia against normal insulin and androgen levels in PCOS-non insulin resistance (NIR). This could possibly be due to defects in the downstream signaling pathways. The study thus aims to unravel insulin and steroidogenic signaling pathways in luteinized granulosa cells isolated from PCOS -IR and NIR vs matched controls...
January 12, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29339074/identification-and-characterization-of-a-doublesex-gene-which-regulates-the-expression-of-insulin-like-androgenic-gland-hormone-in-fenneropenaeus-chinensis
#11
Shihao Li, Fuhua Li, Kuijie Yu, Jianhai Xiang
The doublesex and its homologue genes are important regulators of sexual differentiation which are conserved among animal kingdom. In the present study, we reported a doublesex gene (designated as FcDsx) identified from the Chinese shrimp F. chinensis. The gene structure, nucleotide and deduced amino acid sequences of FcDsx were characterized. The results showed that the deduced amino acid sequence of FcDsx had the common features of Dsx proteins, including a doublesex/male abnormal 3 (DM) domain, an oligomerization domain and a predicted monopartite nuclear localization signal...
January 12, 2018: Gene
https://www.readbyqxmd.com/read/29338844/sfe-sfedp-adrenal-insufficiency-french-consensus-introduction-and-handbook
#12
Yves Reznik, Pascal Barat, Jérôme Bertherat, Claire Bouvattier, Frédéric Castinetti, Olivier Chabre, Philippe Chanson, Christine Cortet, Brigitte Delemer, Bernard Goichot, Damien Gruson, Laurence Guignat, Emmanuelle Proust-Lemoine, Marie-Laure Raffin Sanson, Rachel Reynaud, Dinane Samara Boustani, Dominique Simon, Antoine Tabarin, Delphine Zenaty
The French endocrinology society (SFE) and the French pediatric endocrinology society (DFSDP) have drawn up recommendations for the management of primary and secondary adrenal insufficiency in the adult and child, based on an analysis of the literature by 19 experts in 6 work-groups. A diagnosis of adrenal insufficiency should be suspected in the presence of a number of non-specific symptoms except hyperpigmentation which is observed in primary adrenal insufficiency. Diagnosis rely on plasma cortisol and ACTH measurement at 8am and/or the cortisol increase after synacthen administration...
January 12, 2018: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29338783/children-with-premature-pubarche-is-an-alterated-neonatal-17-ohp-screening-test-a-predictive-factor
#13
Paolo Cavarzere, Margherita Mauro, Monica Vincenzi, Silvana Lauriola, Francesca Teofoli, Rossella Gaudino, Diego Alberto Ramaroli, Rocco Micciolo, Marta Camilot, Franco Antoniazzi
BACKGROUND: Neonatal screening for 21 hydroxylase deficiency is designed to detect classical form of congenital adrenal hyperplasia (CAH). It is still unclear whether newborns who result false positives at neonatal screening might later develop signs of androgen excess. The aim of this study is to verify whether a slightly elevated 17-OHP at newborn screening is a predictive factor for premature pubarche. METHODS: We evaluated all infants born between 2001 and 2014 with premature pubarche...
January 16, 2018: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/29338083/androgen-deprivation-therapy-dementia-and-cognitive-dysfunction-in-men-with-prostate-cancer-how-much-smoke-and-how-much-fire
#14
REVIEW
Deaglan J McHugh, James C Root, Christian J Nelson, Michael J Morris
Androgen-deprivation therapy (ADT) remains the cornerstone of management for patients with metastatic prostate cancer. Although the toxicities of ADT are well established, there is increasing controversy surrounding the association between cognitive dysfunction and the receipt of ADT, with some evidence suggesting an increased risk of dementia. The authors conducted a literature search to identify pertinent clinical studies in this field. This general review outlines the key findings and discusses the relative strengths and weaknesses when drawing conclusions about the risk of cognitive dysfunction or dementia with ADT use...
January 16, 2018: Cancer
https://www.readbyqxmd.com/read/29338073/impact-of-time-to-testosterone-rebound-and-comorbidity-on-the-risk-of-cause-specific-mortality-in-men-with-unfavorable-risk-prostate-cancer
#15
Susan G R McDuff, Ming-Hui Chen, Andrew A Renshaw, Marian J Loffredo, Philip W Kantoff, Anthony V D'Amico
BACKGROUND: Herein, the authors evaluated how the time to testosterone rebound (TTR) after radiotherapy (RT) and 6 months of androgen deprivation therapy (ADT) impacted the risk of prostate cancer-specific mortality (PCSM) and cardiovascular-specific mortality (CVM) among men with varying comorbidity extent. METHODS: Between 1995 and 2001, a total of 206 men who were randomized to receive RT either alone or with 6 months of ADT for unfavorable-risk PC and who had a comorbidity score assigned using the Adult Comorbidity Evaluation 27 metric comprised the study cohort...
January 16, 2018: Cancer
https://www.readbyqxmd.com/read/29337395/testosterone-suppression-with-luteinizing-hormone-releasing-hormone-lhrh-agonists-in-patients-receiving-radiotherapy-for-prostate-cancer
#16
Derek Wilke, Nikhilesh Patil, Helmut Hollenhorst, David Bowes, Robert Rutledge, Casely Ago
OBJECTIVES: To characterize the probability of testosterone escape during a course of radiotherapy and androgen deprivation (ADT) in patients with prostate cancer, and examine predictors of testosterone escape, the prostate specific antigen (PSA) levels during testosterone escape, and the impact of testosterone escape on outcome. PATIENTS AND METHODS: To participate in the database review, necessary data included: (i) type of luteinizing hormone-releasing hormone agonist (LHRHa) administered, date of initiation, and date of cessation or duration of therapy, (ii) radiotherapy information (start date and dose) with at least 6 months of follow-up after radiotherapy, (iii) had to have radiotherapy to the prostate or prostate bed, and (iv) had to have a least one serum testosterone and PSA measurement...
January 16, 2018: Pharmacotherapy
https://www.readbyqxmd.com/read/29336109/moderate-hypofractionation-for-prostate-cancer-a-user-s-guide
#17
REVIEW
David I Pryor, Sandra L Turner, Keen Hun Tai, Colin Tang, Giuseppe Sasso, Marcus Dreosti, Henry H Woo, Lee Wilton, Jarad M Martin
Three large randomised controlled trials have been published in the last year demonstrating the non-inferiority of moderate hypofractionation compared to conventional fractionation for localised prostate cancer with respect to both disease control and late toxicity at 5 years. Furthermore, no clinically significant differences in patient-reported outcomes have emerged. More mature follow-up data are now also available from phase 2 studies confirming that moderate hypofractionation is associated with low rates of significant toxicity at 10 years...
January 16, 2018: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/29335782/association-of-endogenous-circulating-sex-steroids-and-condition-specific-quality-of-life-domains-in-postmenopausal-women-with-pelvic-floor-disorders
#18
Barbara Bodner-Adler, Klaus Bodner, Oliver Kimberger, Ksenia Halpern, Heinz Koelbl, Wolfgang Umek
OBJECTIVE: To examine the relationship between endogenous sex steroids and various condition-specific quality of life domains in postmenopausal women with pelvic floor disorders. We hypothesized that woman with lowest androgen and estradiol concentrations would report worse scores of quality of life domains. METHODS: Forty-six women with pelvic organ prolapse (POP) and 47 cases with stress urinary incontinence (SUI) answered the validated pelvic floor questionnaire and underwent serum sex steroid measurement...
January 15, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29334634/equine-in-vivo-derived-metabolites-of-the-sarm-lgd-4033-and-comparison-with-human-and-fungal-metabolites
#19
Annelie Hansson, Heather Knych, Scott Stanley, Emma Berndtson, Liora Jackson, Ulf Bondesson, Mario Thevis, Mikael Hedeland
LGD-4033 has been found in human doping control samples and has the potential for illicit use in racehorses as well. It belongs to the pharmacological class of selective androgen receptor modulators (SARMs) and can stimulate muscle growth, much like anabolic steroids. However, SARMs have shown superior side effect profiles compared to anabolic steroids, which arguably makes them attractive for use by individuals seeking an unfair advantage over their competitors. The purpose of this study was to investigate the metabolites formed from LGD-4033 in the horse in order to find suitable analytical targets for doping controls...
December 7, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29334357/differential-requirements-of-androgen-receptor-in-luminal-progenitors-during-prostate-regeneration-and-tumor-initiation
#20
Chee Wai Chua, Nusrat J Epsi, Eva Y Leung, Shouhong Xuan, Ming Lei, Bo I Li, Sarah K Bergren, Hanina Hibshoosh, Antonina Mitrofanova, Michael M Shen
Master regulatory genes of tissue specification play key roles in stem/progenitor cells and are often important in cancer. In the prostate, androgen receptor (AR) is a master regulator essential for development and tumorigenesis, but its specific functions in prostate stem/progenitor cells have not been elucidated. We have investigated AR function in CARNs (CAstration-Resistant Nkx3.1-expressing cells), a luminal stem/progenitor that functions in prostate regeneration. Using genetically-engineered mouse models and novel prostate epithelial cell lines, we find that progenitor properties of CARNs are largely unaffected by AR deletion, apart from decreased proliferation in vivo...
January 15, 2018: ELife
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