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https://www.readbyqxmd.com/read/28647951/complexities-of-care-in-klinefelter-syndrome-an-aprn-perspective
#1
Sharron Close, Amy Talboy, Ilene Fennoy
47,XXY (Klinefelter Syndrome) is associated with a spectrum of complex clinical needs that are associated with variable physical, neurocognitive and psychosocial aspects. For patients and families affected by this sex chromosome trisomy, navigation of health care services is difficult due to lack of 47,XXY awareness among many health care providers and little evidence to support endocrine and additional treatment plans. While endocrine management of androgen deficiency has been the mainstay of treatment for patients from puberty through adulthood, testosterone replacement, alone, fails to mitigate many symptoms and issues...
June 2017: Pediatric Endocrinology Reviews: PER
https://www.readbyqxmd.com/read/28646937/comparison-of-external-beam-radiotherapy-versus-permanent-seed-brachytherapy-as-monotherapy-for-intermediate-risk-prostate-cancer-a-single-center-canadian-experience
#2
Guila Delouya, Carole Lambert, Jean-Paul Bahary, Marie-Claude Beauchemin, Maroie Barkati, Cynthia Ménard, Daniel Taussky
INTRODUCTION: We tested different classification systems in order to separate intermediate-risk prostate cancers into prognostic groups. We then examined which groups were most suited for either prostate seed brachytherapy (PB) or external beam radiotherapy (EBRT). MATERIALS AND METHODS: We selected patients with D'Amico intermediate-risk prostate cancer who were treated exclusively with either PB or EBRT. Patients were excluded if they had received androgen deprivation therapy in combination with EBRT or a follow up of < 30 months without recurrence...
June 2017: Canadian Journal of Urology
https://www.readbyqxmd.com/read/28646699/insulin-and-the-polycystic-ovary-syndrome
#3
REVIEW
Djuro Macut, Jelica Bjekić-Macut, Dario Rahelić, Mirjana Doknić
Polycystic ovary syndrome (PCOS) is the most prevalent endocrinopathy among women during reproductive age. PCOS is characterised by hyperandrogenaemia, hyperinsulinaemia, and deranged adipokines secretion from the adipose tissue. In addition to the reduced insulin sensitivity, PCOS women exhibit β-cell dysfunction as well. Low birth weight and foetal exposure to androgens may contribute to the development of the PCOS phenotype during life. Further metabolic complications lead to dyslipidaemia, worsening obesity and glucose tolerance, high prevalence of metabolic syndrome, and greater susceptibility to diabetes...
June 12, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28646101/serum-androgen-profile-and-physical-performance-in-women-olympic-athletes
#4
Emma Eklund, Bo Berglund, Fernand Labrie, Kjell Carlström, Lena Ekström, Angelica Lindén Hirschberg
BACKGROUND: The role of endogenous androgens for body composition and physical performance in women athletes is still not elucidated. AIM: To examine the serum androgen profile in relation to body composition and physical performance in women Olympic athletes and to compare endocrine variables and body composition to controls. STUDY DESIGN: Cross-sectional study, conducted between 2011 and 2015 at the Women's Health Research Unit, Karolinska University Hospital, Stockholm...
June 23, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28645930/genomic-and-non-genomic-effects-of-androgens-in-the-cardiovascular-system-clinical-implications
#5
REVIEW
Angela K Lucas Herald, Rheure Alves-Lopes, Augusto C Montezano, S Faisal Ahmed, Rhian M Touyz
The principle steroidal androgens are testosterone and its metabolite 5α-dihydrotestosterone (DHT), which is converted from testosterone by the enzyme 5α-reductase. Through the classic pathway with androgens crossing the plasma membrane and binding to the androgen receptor (AR) or via mechanisms independent of the ligand-dependent transactivation function of nuclear receptors, testosterone induces genomic and non-genomic effects respectively. AR is widely distributed in several tissues, including vascular endothelial and smooth muscle cells...
July 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28645652/androgen-inhibits-key-atherosclerotic-processes-by-directly-activating-adtrp-transcription
#6
Chunyan Luo, Elisabeth Pook, Bo Tang, Weiyi Zhang, Sisi Li, Kirsten Leineweber, Shing-Hu Cheung, Qiuyun Chen, Martin Bechem, Jing-Shan Hu, Volker Laux, Qing Kenneth Wang
Low androgen levels are associated with an increased risk of coronary artery disease (CAD), thrombosis and myocardial infarction (MI), suggesting that androgen has a protective role. However, little is known about the underlying molecular mechanism. Our genome-wide association study identified the ADTRP gene encoding the androgen-dependent TFPI regulating protein as a susceptibility gene for CAD and MI. The expression level of ADTRP was regulated by androgen, but the molecular mechanism is unknown. In this study, we identified the molecular mechanism by which androgen regulates ADTRP expression and tested the hypothesis that androgen plays a protective role in cardiovascular disease by activating ADTRP expression...
June 20, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28645613/regulation-of-testicular-steroidogenesis-by-foxa3-via-transcriptional-modulation-of-er%C3%AE-signaling-in-type-2-diabetes-mellitus-t2dm
#7
Yong Zhao, Hong-Xin Li, Ke Wang, Bin-Yuan Yan, Wei Li
Although both insulin and estrogen receptor α (ERα) are known to exert inhibitory effects on testicular steroidogenesis, it remains unknown whether these pathways regulate testosterone (T) production under certain pathological conditions [e.g., type 2 diabetes mellitus (T2DM)] in a coordinated manner. Here, we found that the expression of forkhead box protein A3 (Foxa3), an essential transcriptional regulator engaged in adipogenesis and energy metabolism, was significantly down-regulated in the Leydig cells (LCs) from T-deficient T2DM mice...
June 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28645579/anti-androgenic-mechanisms-of-bisphenol-a-involve-androgen-receptor-signaling-pathway
#8
Hui Wang, Zhen Ding, Qiao-Mei Shi, Xing Ge, Heng-Xue Wang, Meng-Xue Li, Gang Chen, Qi Wang, Qiang Ju, Jin-Peng Zhang, Mei-Rong Zhang, Li-Chun Xu
We have shown Bisphenol A (BPA) acts as an androgen receptor (AR) antagonist in the previous study. However, the mechanisms underlying anti-androgenic effects of BPA remain unclear. The objective of this study was to explore whether the AR signaling was involved in AR antagonism of BPA. The Cell Counting Kit-8 (CCK-8) assay and Real-Time Cell Analysis (RTCA) iCELLigence system were applied to analyze the mouse Sertoli cell TM4 proliferation. The mammalian two-hybrid assays were performed to investigate the effects of BPA on the AR amino- and carboxyl-terminal regions (N/C) interaction and the interactions of the AR with steroid receptor coactivator-1 (SRC-1), co-repressors including silencing mediator for thyroid hormone receptors (SMRT) and nuclear receptor co-repressor (NCoR)...
June 20, 2017: Toxicology
https://www.readbyqxmd.com/read/28645352/r%C3%A3-sistances-aux-hormones-st%C3%A3-ro%C3%A3-des-physiologie-et-pathologie-pathophysiology-of-steroid-resistance-syndrome
#9
N Ramos, M Lombès
Steroid resistance syndrome (mineralocorticoids, glucocorticoids, estrogens, androgens) is a rare clinical disorder, androgen insensitivity syndrome being the most commonly described. Resistance syndromes are characterized by elevated steroid hormone levels, secondary to an impaired signal transduction and a lack of negative feedback, without any specific clinical signs of steroid excess. In most cases, steroid hormone resistance is generally caused by steroid receptor mutations. Several nonsense and missense mutations or deletions have already been described for all steroid receptors, except for the progesterone receptor...
October 2016: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28645211/akr1c3-mediated-adipose-androgen-generation-drives-lipotoxicity-in-women-with-polycystic-ovary-syndrome
#10
Michael W O'Reilly, Punith Kempegowda, Mark Walsh, Angela E Taylor, Konstantinos N Manolopoulos, J William Allwood, Robert K Semple, Daniel Hebenstreit, Warwick B Dunn, Jeremy W Tomlinson, Wiebke Arlt
Context: Polycystic ovary syndrome (PCOS) is a prevalent metabolic disorder, occurring in up to 10% of women of reproductive age. PCOS is associated with insulin resistance and cardiovascular risk. Androgen excess is a defining feature of PCOS and has been suggested as causally associated with insulin resistance; however, mechanistic evidence linking both is lacking. We hypothesized that adipose tissue is an important site linking androgen activation and metabolic dysfunction in PCOS...
June 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28645209/genome-wide-mapping-of-in-vivo-er%C3%AE-binding-sites-in-male-mouse-efferent-ductules
#11
Guangxin Yao, Shuanggang Hu, Lu Yu, Yanfei Ru, Charlie Degui Chen, Qiang Liu, Yonglian Zhang
As an important nuclear hormone receptor, estrogen receptor alpha (ERα), which is encoded by Esr1 gene, regulates the expression of hundreds of genes in a stimulus-specific, temporal and tissue-specific fashion, mainly by binding to specific DNA sequences-estrogen response elements (EREs). As an important estrogen target tissue in males, the function of the efferent ductules relies on the presence of the ERα protein, but the underlying regulatory mechanisms are poorly illustrated. In this study, genome-wide ERα-binding sites in mouse efferent ductules were mapped by ChIP-seq...
June 22, 2017: Endocrinology
https://www.readbyqxmd.com/read/28644440/lncrna-sarcc-suppresses-renal-cell-carcinoma-rcc-progression-via-altering-the-androgen-receptor-ar-mirna-143-3p-signals
#12
Wei Zhai, Yin Sun, Changcheng Guo, Guanghui Hu, Mingchao Wang, Jiayi Zheng, WanYing Lin, Qingbo Huang, Gonghui Li, Junhua Zheng, Chawnshang Chang
While the androgen receptor (AR) might promote renal cell carcinoma (RCC) initiation and progression, the molecular mechanisms involved remain largely unclear. Here, we discovered the novel LncRNA-SARCC, which was suppressed and associated with better prognosis in RCC. Preclinical studies using multiple RCC cells and in vivo mouse model indicated that LncRNA-SARCC could attenuate RCC cell invasion, migration and proliferation in vitro and in vivo. Mechanistically, LncRNA-SARCC bound and destabilized AR protein with an inhibition of AR function, which led to transcriptionally de-repress miR-143-3p expression, thus inhibition of its downstream signals including AKT, MMP-13, K-RAS and P-ERK...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28644303/prostate-cancer-immunotherapy-the-path-forward
#13
Ravi A Madan, James L Gulley
PURPOSE OF REVIEW: To provide an overview of current strategies being investigated in the development of immunotherapy in prostate cancer. RECENT FINDINGS: Development of immunotherapy in prostate cancer actually began in 2010 with FDA approval of sipuleucel-T. Given that immune checkpoint inhibitor trials have either been negative at the phase III level or underwhelming in smaller studies, it is likely that combination strategies will be required to further maximize the impact immune-based therapies on the clinical course of the disease...
July 20, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28644090/transdermal-administration-of-melatonin-coupled-to-cryopass-laser-treatment-as-noninvasive-therapy-for-prostate-cancer
#14
Laura Terraneo, Paola Bianciardi, Eleonora Virgili, Elena Finati, Michele Samaja, Rita Paroni
Melatonin, a pineal gland hormone, exerts oncostatic activity in several types of human cancer, including prostate, the most common neoplasia and the third most frequent cause of male cancer death in the developed world. The growth of androgen-sensitive LNCaP prostate cancer cells in mice is inhibited by 3 mg/kg/week melatonin (0.09 mg/mouse/week) delivered by i.p. injections, which is equivalent to a dose of 210 mg/week in humans. The aim of this study is to test an alternative noninvasive delivery route based on transdermal administration of melatonin onto the tumor area followed by cryopass-laser treatment...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28643815/-greater-saphenous-vein-thrombosis-and-testosterone-replacement-therapy-an-occasional-association
#15
Giorgio Bertola, Roberto Bianchi, Salvatore Giambona, Simona Sada, Sergio Antonio Berra
We describe a case of greater saphenous vein thrombosis in a 50-year-old previously healthy man, occurred only 3 weeks after starting testosterone (T) replacement therapy (20 mg/day, gel) for hypergonadotropic hypogonadism. There were no clinical known risk factors for thrombosis. Laboratory assessment of thrombophilia, performed later, revealed only methylenetetrahydrofolate reductase (MTHFR) A1298C polymorphism. On the basis of other recently reported cases, we suppose a relationship between androgenic therapy and venous thrombosis...
May 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28643028/polycystic-ovary-syndrome-adipose-tissue-and-metabolic-syndrome
#16
REVIEW
Alessandro P Delitala, Giampiero Capobianco, Giuseppe Delitala, Pier Luigi Cherchi, Salvatore Dessole
PURPOSE: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder that affects women of reproductive age and is characterized by ovulatory dysfunction and/or androgen excess or polycystic ovaries. Women with PCOS present a number of systemic symptoms in addition to those related to the reproductive system. It has been associated with functional derangements in adipose tissue, metabolic syndrome, type 2 diabetes, and an increased risk of cardiovascular disease (CVD). METHODS: A detailed literature search on Pubmed was done for articles about PCOS, adipokines, insulin resistance, and metabolic syndrome...
June 22, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28643022/androgen-receptor-expression-and-breast-cancer-mortality-in-a-population-based-prospective-cohort
#17
Karin Elebro, Pär-Ola Bendahl, Helena Jernström, Signe Borgquist
PURPOSE: The increase in clinical trials with androgen receptor (AR)-targeting drugs emphasizes the need of clarifying the role of AR expression in different breast cancer subtypes. AR confers good prognosis in estrogen receptor positive (ER+) breast cancer, but its role in ER-negative (ER-) breast cancer is unclear. The aim of this study was to elaborate on previous findings of a differential prognostic role for AR depending on ER status, using breast cancer mortality (BCM) as endpoint, in a population-based cohort from the Malmö Diet and Cancer Study...
June 22, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28642838/adaptive-pathways-and-emerging-strategies-overcoming-treatment-resistance-in-castration-resistant-prostate-cancer
#18
Cameron M Armstrong, Allen C Gao
The therapies available for prostate cancer patients whom progress from hormone-sensitive to castration resistant prostate cancer include both systemic drugs, including docetaxel and cabazitaxel, and drugs that inhibit androgen signaling such as enzalutamide and abiraterone. Unfortunately, it is estimated that up to 30% of patients have primary resistance to these treatments and over time even those who initially respond to therapy will eventually develop resistance and their disease will continue to progress regardless of the presence of the drug...
October 2016: Asian Journal of Urology
https://www.readbyqxmd.com/read/28642789/androgen-receptor-localizes-to-plasma-membrane-by-binding-to-caveolin-1-in-mouse-sertoli-cells
#19
Qiong Deng, Yong Wu, Zeng Zhang, Yue Wang, Minghua Li, Hui Liang, Yaoting Gui
The nonclassical androgen signaling pathway translates signals into alterations in cellular function within minutes, and this action is proposed to be mediated by an androgen receptor (AR) localized to the plasma membrane. This study was designed to determine the mechanism underlying the membrane association of androgen receptor in TM4 cells, a mouse Sertoli cell line. Western blot analysis indicated testosterone-induced AR translocation to the cell membrane. Data from coimmunoprecipitation indicated that AR is associated with caveolin-1, and testosterone enhanced this association...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28642484/mir-100-5p-inhibition-induces-apoptosis-in-dormant-prostate-cancer-cells-and-prevents-the-emergence-of-castration-resistant-prostate-cancer
#20
Noushin Nabavi, Nur Ridzwan Nur Saidy, Erik Venalainen, Anne Haegert, Abhijit Parolia, Hui Xue, Yuwei Wang, Rebecca Wu, Xin Dong, Colin Collins, Francesco Crea, Yuzhuo Wang
Carcinoma of the prostate is the most common cancer in men. Treatment of aggressive prostate cancer involves a regiment of radical prostectomy, radiation therapy, chemotherapy and hormonal therapy. Despite significant improvements in the last decade, the treatment of prostate cancer remains unsatisfactory, because a significant fraction of prostate cancers develop resistance to multiple treatments and become incurable. This prompts an urgent need to investigate the molecular mechanisms underlying the evolution of therapy-induced resistance of prostate cancer either in the form of castration-resistant prostate cancer (CRPC) or transdifferentiated neuroendocrine prostate cancer (NEPC)...
June 22, 2017: Scientific Reports
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