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https://www.readbyqxmd.com/read/28432962/gc-ms-quantitative-analysis-of-black-market-pharmaceutical-products-containing-anabolic-androgenic-steroids-seized-by-the-brazilian-federal-police
#1
Diana Brito da Justa Neves, Eloisa Dutra Caldas
The use of counterfeit or substandard medicines can have an important health impact, resulting in therapeutic failure, be toxic or even cause death. Anabolic steroids are a frequent target for counterfeiters worldwide, being the second most frequent counterfeited class in Brazil. The aims of this work were to optimize and validate a GC-MS method for the quantitative determination of anabolic steroids in tablet, aqueous suspension and oil solution forms, and to analyze pharmaceutical products sent to Brazilian Federal Police (BFP) for forensic analysis...
April 5, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28432720/androgen-receptor-dysfunction-as-a-prevalent-manifestation-in-young-male-carriers-of-a-flna-gene-mutation
#2
Laura Carrera-García, Maximiliano Francisco Rivas-Crespo, María Soledad Fernández García
Androgenic actions require the proper signal transmission by the androgen receptor (AR), a nuclear transcription factor. This is initially located in the cell cytoplasm and should translocates to the nucleus to interact with DNA. AR functional impairment causes diverse blockage degrees of androgenic steroid action, known as androgen insensitivity syndromes. Filamin A, a protein coded by the FLNA gene, is a co-activator of various cytoplasmic factors, including AR. The mutational inactivation of the FLNA gene induces insufficiency of translocation and activation of AR...
April 21, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28432719/effect-of-ficus-carica-leaf-extract-on-the-gene-expression-of-selected-factors-in-hacat-cells
#3
Murat Turkoglu, Erkin Pekmezci, Songul Kilic, Cihat Dundar, Hakan Sevinc
BACKGROUND: Ficus carica Linn. (Fc), common fig, has been traditionally used for many metabolic, cardiovasculary, respiratory, gastrointestinal, and skin disorders. Several studies were performed showing its anti-inflammatory, anti-angiogenic, anticancerogenic, and tissue-protective effects. In all of those studies, the positive effects of Fc were concluded as the result of its antioxidant and anti-inflammatory features due to the polyphenols it contains. AIMS: To study the phenolic compounds of Fc extract and to investigate the molecular basis of anti-inflammatory, anti-angiogenic, antimitotic, and anti-androgenic effects of Fc leaf extract in vitro...
April 22, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28432552/subchronic-nandrolone-administration-reduces-cardiac-oxidative-markers-during-restraint-stress-by-modulating-protein-expression-patterns
#4
Barbara Pergolizzi, Vitina Carriero, Giuliana Abbadessa, Claudia Penna, Paola Berchialla, Silvia De Francia, Enrico Bracco, Silvia Racca
Nandrolone decanoate (ND), an anabolic-androgenic steroid prohibited in collegiate and professional sports, is associated with detrimental cardiovascular effects through redox-dependent mechanisms. We previously observed that high-dose short-term ND administration (15 mg/kg for 2 weeks) did not induce left heart ventricular hypertrophy and, paradoxically, improved postischemic response, whereas chronic ND treatment (5 mg/kg twice a week for 10 weeks) significantly reduced the cardioprotective effect of postconditioning, with an increase in infarct size and a decrease in cardiac performance...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28432434/ventricular-androgenic-anabolic-steroid-related-remodeling-an-immunohistochemical-study
#5
Rossana Cecchi, Barbara Muciaccia, Costantino Ciallella, Natale Mario Di Luca, Akihiko Kimura, Cristina Sestili, Mizuho Nosaka, Toshikazu Kondo
BACKGROUND: Several fatal cases of bodybuilders, following a myocardial infarction after long exposure to androgenic-anabolic steroids (AAS), are reported. In recent years, evidence has emerged of cases of heart failure related to AAS consumption, with no signs of coronary or aorta atherosclerosis. This study aims to further investigate the pathogenesis of the ventricular AAS-related remodeling performing immunohistochemistry (IHC). METHOD: In order to examine innate immunity activity and myocytes and endothelial cell apoptosis, IHC analyses were performed on heart tissue of two cases of bodybuilders who died after years of supratherapeutic use of metelonone and nandrolone and where no atherosclerosis or thrombosis were found, using the following antibodies: anti-CD68, anti-iNOS, anti-CD163, anti-CD 15, anti-CD8, anti-CD4, anti-HIF1 α, and in situ TUNEL staining...
April 21, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28432270/discriminating-between-virilizing-ovary-tumors-and-ovary-hyperthecosis-in-postmenopausal-women-clinical-data-hormonal-profiles-and-image-studies
#6
Viviane Dos Reis Vieira Yance, José Antonio Miguel Marcondes, Michelle Patrocíneo Rocha, Cristiano Roberto Grimaldi Barcellos, Wagner Silva Dantas, Ana Flavia Assis Avila, Ronaldo Hueb Baroni, Filomena Marino Carvalho, Sylvia Asaka Yamashita Hayashida, Berenice Bilharinho Mendonça, Sorahia Domenice
The presence of virilizing signs associated with high serum androgen levels in postmenopausal women is rare. Virilizing ovarian tumors (VOTs) and ovarian stromal hyperthecosis (OH) are the most common etiologies in virilized postmenopausal women. The differential diagnosis between these two conditions is often difficult. OBJECTIVE: To evaluate the contribution of clinical features, hormonal profiles and radiological studies to the differential diagnosis of VOT and OH. DESIGN: A retrospective study...
April 21, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28432091/suppressive-effects-of-tnf%C3%AE-il6-and-macrophages-on-thecal-androgen-production
#7
Moafaq S Samir, Claire Glister, Dareen Mattar, Mhairi Laird, Philip G Knight
Pro-inflammatory cytokines secreted by macrophages and other cell-types are implicated as intra-ovarian factors affecting different aspects of ovarian function including follicle and corpus luteum 'turnover', steroidogenesis and angiogenesis. Here, we compared granulosal (GC) and thecal (TC) expression of TNF, IL6 and their receptors (TNFR1, TNFRSF1B, IL6R) during bovine antral follicle development; all five mRNA transcripts were detected in both GC and TC and statistically significant cell-type and follicle stage-related differences were evident...
April 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28431277/endocrine-disruption-by-environmental-gestagens-in-amphibians-a-short-review-supported-by-new-in%C3%A2-vitro-data-using-gonads-of-xenopus-laevis
#8
REVIEW
Andrea Ziková, Claudia Lorenz, Frauke Hoffmann, Wibke Kleiner, Ilka Lutz, Matthias Stöck, Werner Kloas
Endocrine disruption caused by various anthropogenic compounds is of persisting concern, especially for aquatic wildlife, because surface waters are the main sink of these so-called endocrine disruptors (ED). In the past, research focused on (anti)estrogenic, (anti)androgenic, and (anti)thyroidal substances, affecting primarily reproduction and development in vertebrates; however, other endocrine systems might be also targeted by ED. Environmental gestagens, including natural progestogens (e.g. progesterone (P4)) and synthetic progestins used for contraception, are supposed to affect vertebrate reproduction via progesterone receptors...
April 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28430914/finding-the-right-balance-androgens-at-the-tipping-point-of-fertility-and-metabolism-in-women
#9
Michael T Sellix, Aritro Sen
No abstract text is available yet for this article.
March 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28430640/epithelial-mesenchymal-transition-in-prostate-cancer-an-overview
#10
REVIEW
Micaela Montanari, Sabrina Rossetti, Carla Cavaliere, Carmine D'Aniello, Maria Gabriella Malzone, Daniela Vanacore, Rossella Di Franco, Elvira La Mantia, Gelsomina Iovane, Raffaele Piscitelli, Raffaele Muscariello, Massimiliano Berretta, Sisto Perdonà, Paolo Muto, Gerardo Botti, Attilio Antonio Montano Bianchi, Bianca Maria Veneziani, Gaetano Facchini
Prostate cancer is a main urological disease associated with significant morbidity and mortality. Radical prostatectomy and radiotherapy are potentially curative for localized prostate cancer, while androgen deprivation therapy is the initial systemic therapy for metastatic prostate disease. However, despite temporary response, most patients relapse and evolve into castration resistant cancer.Epithelial-mesenchymal transition (EMT) is a complex gradual process that occurs during embryonic development and/or tumor progression...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430631/loss-of-steroid-hormone-receptors-is-common-in-malignant-pleural-and-peritoneal-effusions-of-breast-cancer-patients-treated-with-endocrine-therapy
#11
Willemijne A M E Schrijver, Karianne Schuurman, Annelot van Rossum, Ton Peeters, Natalie Ter Hoeve, Wilbert Zwart, Paul J van Diest, Cathy B Moelans
Discordance in estrogen receptor alpha (ERα), progesterone receptor (PR), androgen receptor (AR) and human epidermal growth factor receptor 2 (HER2) status between primary breast cancers and solid distant metastases ("conversion") has been reported previously. Even though metastatic spread to the peritoneal and pleural cavities occurs frequently and is associated with high mortality, the rate of receptor conversion and the prognostic implications thereof remain elusive.We therefore determined receptor conversion in 91 effusion metastases (78 pleural, 13 peritoneal effusions) of 69 patients by immunohistochemistry (IHC) and in situ hybridization...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430630/estrogen-and-androgen-converting-enzymes-17%C3%AE-hydroxysteroid-dehydrogenase-and-their-involvement-in-cancer-with-a-special-focus-on-17%C3%AE-hydroxysteroid-dehydrogenase-type-1-2-and-breast-cancer
#12
REVIEW
Erik Hilborn, Olle Stål, Agneta Jansson
Sex steroid hormones such as estrogens and androgens are involved in the development and differentiation of the breast tissue. The activity and concentration of sex steroids is determined by the availability from the circulation, and on local conversion. This conversion is primarily mediated by aromatase, steroid sulfatase, and 17β-hydroxysteroid dehydrogenases. In postmenopausal women, this is the primary source of estrogens in the breast. Up to 70-80% of all breast cancers express the estrogen receptor-α, responsible for promoting the growth of the tissue...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430389/combination-of-carmustine-and-selenite-inhibits-egfr-mediated-growth-signaling-in-androgen-independent-prostate-cancer-cells
#13
Vijayalakshmi Thamilselvan, Mani Menon, Gary S Stein, Fred Valeriote, Sivagnanam Thamilselvan
Although aberrant androgen receptor (AR) signaling is a central mechanism for castration resistant prostate cancer (CRPC) progression, AR-independent survival and growth signaling is also present in CRPC. The current therapeutic options for patients with CRPC are limited and new drugs are desperately needed to eliminate these crucial growth signaling pathways. Overexpression of EGFR in CRPC primarily mediates the proliferation of androgen-independent prostate cancer (AIPC) cells. We have previously shown that combination of carmustine and selenite effectively induces apoptosis and growth inhibition by targeting AR and AR-variants in castration resistant prostate cancer cells...
April 21, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28429718/a-computational-systems-approach-identifies-synergistic-specification-genes-that-facilitate-lineage-conversion-to-prostate-tissue
#14
Flaminia Talos, Antonina Mitrofanova, Sarah K Bergren, Andrea Califano, Michael M Shen
To date, reprogramming strategies for generating cell types of interest have been facilitated by detailed understanding of relevant developmental regulatory factors. However, identification of such regulatory drivers often represents a major challenge, as specific gene combinations may be required for reprogramming. Here we show that a computational systems approach can identify cell type specification genes (master regulators) that act synergistically, and demonstrate its application for reprogramming of fibroblasts to prostate tissue...
April 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28428880/long-term-complete-remission-with-ipilimumab-in-metastatic-castrate-resistant-prostate-cancer-case-report-of-two-patients
#15
Luc Cabel, Elika Loir, Gwenaelle Gravis, Pernelle Lavaud, Christophe Massard, Laurence Albiges, Giulia Baciarello, Yohann Loriot, Karim Fizazi
BACKGROUND: Prostate cancer is one of the most common cancers in men and the fourth leading cause of cancer mortality worldwide. Although major progress has been achieved in the last years for patients with metastatic castrate-resistant prostate cancer (mCRPC), thanks to next-generation androgen receptor axis targeted drugs, taxanes, and bone-targeted agents, immunotherapy has not been widely approved and used for the treatment of prostate cancer. Two large studies with ipilimumab, an anti-CTLA-4 (cytotoxic T-lymphocyte antigen 4) antibody reported improved progression-free survival, but not statistically improved overall survival at the primary analysis (CA184 043 and CA184 095)...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28428445/pectinase-treated-panax-ginseng-protects-heat-stress-induced-testicular-damage-in-rats
#16
Min Kyoung Kim, Kyu-Min Cha, Seock-Yeon Hwang, Un-Kyu Park, Seok Kyo Seo, Sang-Ho Lee, Min-Sik Jeong, SiHyun Cho, Spandana Rajendra Kopalli, Si-Kwan Kim
Testicular hyperthermia is well studied to cause impaired spermatogenesis. In the present study, the protective effect of enzymatically modified (pectinase-treated) Panax ginseng (GINST) against intermittent sub-chronic heat stress-induced testicular damage in rats was investigated. Male Sprague-Dawley rats were divided into four groups: normal control (NC), heat-stressed control (HC), heat-stressed plus GINST-100 mg/kg/day (HG100) and heat-stressed plus GINST-200 mg/kg/day (HG200) treatment groups. GINST (100 and 200 mg/kg/day) was mixed separately with a regular pellet diet and was administered orally for 8 weeks starting from 1 week before heat exposure...
June 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28428441/selective-glucocorticoid-receptor-modulators-sgrms-delay-castrate-resistant-prostate-cancer-growth
#17
Jacob Kach, Tiha M Long, Phillip Selman, Eva Y Tonsing-Carter, Maria A Bacalao, Ricardo R Lastra, Larischa de Wet, Shane Comiskey, Marc Gillard, Calvin VanOpstall, Diana C West, Wen-Ching Chan, Donald Vander Griend, Suzanne D Conzen, Russell Z Szmulewitz
Increased glucocorticoid receptor (GR) expression and activity following androgen blockade can contribute to castration-resistant prostate cancer (CRPC) progression. Therefore, we hypothesized that GR antagonism will have therapeutic benefit in CRPC. However, the FDA-approved nonselective, steroidal GR antagonist, mifepristone, lacks GR specificity, reducing its therapeutic potential. Here we report that two novel non-steroidal and highly selective GR modulators (SGRMs), CORT118335 and CORT108297, have the ability to block GR activity in prostate cancer (PC) and slow CRPC progression...
April 20, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28427378/assessment-of-cardiac-function-in-children-with-congenital-adrenal-hyperplasia-a-case-control-study-in-cameroon
#18
J Tony Nengom, S Sap Ngo Um, D Chelo, R Mbono Betoko, J Boombhi, F Mouafo Tambo, A Chiabi, S Kingue, P Koki Ndombo
BACKGROUND: High level of androgens found in congenital adrenal hyperplasia (CAH) seems to have a deleterious effect on heart function. We therefore evaluate cardiac function of children with CAH in comparison with a healthy group. METHODS: We carried out a case-control study in the single endocrinology unit of the Mother and Child Center of Chantal Biya's Foundation. Cases were matched for age and genotypic sex to 2 healthy controls. We analyzed the ejection fraction (LVEF), fractional shortening and left ventricular mass; output and cardiac index; E and A waves velocities, E/A ratio and the mitral deceleration time and diameter of the left atrium; tricuspid annular plane systolic excursion and pulmonary artery systolic pressure were also measured...
April 20, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28427194/alternative-rna-splicing-of-the-meaf6-gene-facilitates-neuroendocrine-prostate-cancer-progression
#19
Ahn R Lee, Yinan Li, Ning Xie, Martin E Gleave, Michael E Cox, Colin C Collins, Xuesen Dong
Although potent androgen receptor pathway inhibitors (ARPI) improve overall survival of metastatic prostate cancer patients, treatment-induced neuroendocrine prostate cancer (t-NEPC) as a consequence of the selection pressures of ARPI is becoming a more common clinical issue. Improved understanding of the molecular biology of t-NEPC is essential for the development of new effective management approaches for t-NEPC. In this study, we identify a splice variant of the MYST/Esa1-associated factor 6 (MEAF6) gene, MEAF6-1, that is highly expressed in both t-NEPC tumor biopsies and neuroendocrine cell lines of prostate and lung cancers...
March 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426464/comparative-effectiveness-in-urology-a-state-of-the-art-review-utilizing-a-systematic-approach
#20
Jathin Bandari, Charles B Wessel, Bruce L Jacobs
PURPOSE OF REVIEW: Comparative effectiveness research plays a vital role in healthcare delivery by guiding evidence-based practices. We performed a state-of-the-art review of comparative effectiveness research in the urology literature for 2016, utilizing a systematic approach. Seven high-impact papers are reviewed in detail. RECENT FINDINGS: Across the breadth of urology, there were several important studies in comparative effectiveness research, of which we will highlight two randomized controlled trials and five observational trials: radiotherapy, prostatectomy, and active monitoring have equivalent mortality outcomes in patients with localized prostate cancer; the ideal modality of patient education is yet to be determined, and written education has minimal effect on patient perception of prostate specific antigen screening; robotic prostatectomy is associated with higher perioperative complication rates on a population basis; racial disparities exist in incontinence rates after treatment for localized prostate cancer, but not in irritative, bowel, or sexual function; androgen deprivation therapy is associated with higher fracture, peripheral artery disease, and cardiac-related complications than bilateral orchiectomy; robotic and open cystectomy offer comparable cancer-specific mortality and perioperative outcomes; and bonuses for low-cost hospitals can inadvertently reward low-quality hospitals...
April 19, 2017: Current Opinion in Urology
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