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https://www.readbyqxmd.com/read/28432552/subchronic-nandrolone-administration-reduces-cardiac-oxidative-markers-during-restraint-stress-by-modulating-protein-expression-patterns
#1
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
#2
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/28412309/the-scaffold-protein-rack1-is-a-target-of-endocrine-disrupting-chemicals-edcs-with-important-implication-in-immunity
#3
Erica Buoso, Marilisa Galasso, Melania Ronfani, Angela Papale, Valentina Galbiati, Ivano Eberini, Marina Marinovich, Marco Racchi, Emanuela Corsini
We recently demonstrated the existence of a complex hormonal balance between steroid hormones in the control of RACK1 (Receptor for Activated C Kinase 1) expression and immune activation, suggesting that this scaffold protein may also be targeted by endocrine disrupting chemicals (EDCs). As a proof of concept, we investigated the effect of the doping agent nandrolone, an androgen receptor (AR) agonist, and of p,p'DDT (dichlorodiphenyltrichloroethane) and its main metabolite p,p'DDE (dichlorodiphenyldichloroethylene), a weak and strong AR antagonist, respectively, on RACK1 expression and innate immune response...
April 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28334510/pharmacokinetics-of-testosterone-cream-applied-to-scrotal-skin
#4
R Iyer, S F Mok, S Savkovic, L Turner, G Fraser, R Desai, V Jayadev, A J Conway, D J Handelsman
Scrotal skin is thin and has high steroid permeability, but the pharmacokinetics of testosterone via the scrotal skin route has not been studied in detail. The aim of this study was to define the pharmacokinetics of testosterone delivered via the scrotal skin route. The study was a single-center, three-phase cross-over pharmacokinetic study of three single doses (12.5, 25, 50 mg) of testosterone cream administered in random sequence on different days with at least 2 days between doses to healthy eugonadal volunteers with endogenous testosterone suppressed by administration of nandrolone decanoate...
March 23, 2017: Andrology
https://www.readbyqxmd.com/read/28322013/evidence-of-boldenone-nandrolone-5-10-estrene-3%C3%AE-17%C3%AE-diol-and-4-estrene-3-17-dione-as-minor-metabolites-of-testosterone-in-equine
#5
Jenny K Y Wong, David K K Leung, Peter Curl, Peter J Schiff, Kenneth K H Lam, Terence S M Wan
The detection of boldenone, nandrolone, 5(10)-estrene-3β,17α-diol and 4-estrene-3,17-dione in a urine sample collected from a gelding having been treated with testosterone (500 mg "Testosterone Suspension 100", single dose, injected intramuscularly) in 2009 led the authors' laboratory to suspect that these 'testicular' steroids could be minor metabolites of testosterone in geldings. Administration trials on six castrated horses with "Testosterone Suspension 100" confirmed that low levels of boldenone, nandrolone, 5(10)-estrene-3β,17α-diol and 4-estrene-3,17-dione could indeed be detected and confirmed in the early post-administration urine samples from all six geldings...
March 20, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28244681/nandrolone-decanoate-interferes-with-testosterone-biosynthesis-altering-blood-testis-barrier-components
#6
Rosario Barone, Alessandro Pitruzzella, Antonella Marino Gammazza, Francesca Rappa, Monica Salerno, Fulvio Barone, Claudia Sangiorgi, Daniela D'Amico, Nicola Locorotondo, Francesca Di Gaudio, Luigi Cipolloni, Valentina Di Felice, Stefania Schiavone, Venerando Rapisarda, Gabriele Sani, Amos Tambo, Francesco Cappello, Emanuela Turillazzi, Cristoforo Pomara
The aim of this study was to investigate whether nandrolone decanoate (ND) use affects testosterone production and testicular morphology in a model of trained and sedentary mice. A group of mice underwent endurance training while another set led a sedentary lifestyle and were freely mobile within cages. All experimental groups were treated with either ND or peanut oil at different doses for 6 weeks. Testosterone serum levels were measured via liquid chromatography-mass spectrometry. Western blot analysis and quantitative real-time PCR were utilized to determine gene and protein expression levels of the primary enzymes implicated in testosterone biosynthesis and gene expression levels of the blood-testis barrier (BTB) components...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28236045/detection-and-quantification-of-12-anabolic-steroids-and-analogs-in-human-whole-blood-and-20-in-hair-using-lc-hrms-ms-application-to-real-cases
#7
Nicolas Fabresse, Stanislas Grassin-Delyle, Isabelle Etting, Jean-Claude Alvarez
We developed and validated a method to detect and quantify 12 anabolic steroids in blood (androstenedione, dihydrotestosterone, boldenone, epitestosterone, mesterolone, methandienone, nandrolone, stanozolol, norandrostenedione, tamoxifene, testosterone, trenbolone) and eight more in hair samples (nandrolone phenylpropionate, nandrolone decanoate, testosterone propionate, testosterone benzoate, testosterone cypionate, testosterone decanoate, testosterone phenylpropionate, testosterone undecanoate) using liquid chromatography coupled to high-resolution mass spectrometry...
February 24, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28192127/long-term-treatment-with-nandrolone-decanoate-impairs-mesenteric-vascular-relaxation-in-both-sedentary-and-exercised-female-rats
#8
Izabela F Caliman, Cristian S Bernabe, Antônio F de Melo, Girlândia A Brasil, Andrews M do Nascimento, Ewelyne M de Lima, Suely G Figueiredo, Tadeu U de Andrade, Nazaré S Bissoli
Nandrolone Decanoate (ND) is an Anabolic Androgenic Steroid (AAS) that under abusive regimen can lead to multiple physiological adverse effects. Studies of AAS-mediated cardiovascular (CV) alterations were mostly taken from male subjects, even though women are also susceptible to the effects of AAS and gender-specific differences in susceptibility to vascular diseases exist. Here we investigate ND-induced vascular reactivity alterations in both sedentary and exercised female rats and whether these alterations depend on endothelium-derived factors...
April 2017: Steroids
https://www.readbyqxmd.com/read/28144902/ameliorative-effects-of-endurance-exercise-with-two-different-intensities-on-nandrolone-decanoate-induced-neurodegeneration-in-rats-involving-redox-and-apoptotic-systems
#9
Siyavash Joukar, Reza Vahidi, Alireza Farsinejad, Majid Asadi-Shekaari, Beydolah Shahouzehi
Despite the importance of this issue, less has been paid to the influence of exercise on the neural side effects of anabolic androgenic steroids and mechanisms. We investigated the effects of two levels of endurance exercise on neurodegeneration side effects of nandrolone. The study period was 8 weeks. Wistar rats were divided into nine groups including the control (CTL) group, mild exercise (mEx) group, and vehicle (Arach) group which received arachis oil intramuscularly, nandrolone (Nan) group which received nandrolone decanoate 5 mg/kg two times weekly, mEx+Arach group which treated with arachis oil along with mild exercise, mEx+Nan group which treated with nandrolone along with mild exercise, severe exercise (sEx) group, sEx+Arach, and sEx+Nan groups...
January 31, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28048973/effect-of-physical-exercise-and-anabolic-steroid-treatment-on-spinal-motoneurons-and-surrounding-glia-of-wild-type-and-als-mice
#10
Roman M Kassa, Roberta Bonafede, Federico Boschi, Marina Bentivoglio, Raffaella Mariotti
Motoneuron degeneration is the hallmark of amyotrophic lateral sclerosis (ALS). The cause and predisposing factors for sporadic ALS are still unknown. Exposure to a specific environmental risk factors in subjects with a susceptibility genotype may increase the risk of the disease. The role of physical activity and the use of anabolic steroids are still debated in epidemiological studies on patients and murine models of ALS. To assess at the cellular level the role (beneficial or detrimental) of physical exercise and the use of anabolic steroid, we here investigated, in SOD1(G93A) (mSOD1) mice and wild-type littermates, changes in the ventral horn after regular exercise, treatment with the anabolic androgenic steroid 19-nortestosterone (nandrolone), and their combination, compared with matched control sedentary mice...
February 15, 2017: Brain Research
https://www.readbyqxmd.com/read/28019124/immediate-and-residual-effects-of-low-dose-nandrolone-decanoate-and-treadmill-training-on-adipose-and-reproductive-tissues-of-male-wistar-rats
#11
Josilene M Rodrigues, Vinicius P P Oliveira, Julia P Furlan, Ana Claudia Munhoz, Marcelo R S Rempel, Marcia N Brito, Nilton A Brito, Maria M D Pedrosa, Cecília E M Costa
CONTEXT: Residual effects after nandrolone decanoate (ND) treatment are not reported. OBJECTIVE: Immediate and residual effects of low-dose ND and treadmill training were investigated. MATERIALS AND METHODS: Male rats were trained and/or ND-treated for four weeks and the assessments were made after this period or four weeks later. RESULTS: The groups did not differ in final plasma glucose or AUC of the ivGTT, but hyperinsulinemia was noticed in some trained/treated groups...
May 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27989828/where-does-hydrolysis-of-nandrolone-decanoate-occur-in-the-human-body-after-release-from-an-oil-depot
#12
R W Kalicharan, M R Bout, C Oussoren, H Vromans
Long-term therapy of nandrolone (N) is recommended to increase mineral density and muscle strength. Using a parenteral sustained release drug formulation with nandrolone decanoate (ND), therapeutic N levels can be achieved and maintained. Until now, it is unknown if hydrolysis of ND into N occurs in tissue at the injection site or after systemic absorption. Therefore, hydrolysis studies were conducted to investigate the location and rate of ND hydrolysis after its release from the oil depot. ND hydrolysis was studied in porcine tissues, to mimic the human muscular and subcutaneous tissues...
December 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27979262/effects-and-detection-of-nandrosol-and-ractopamine-administration-in-veal-calves
#13
Sara Divari, Enrica Berio, Paola Pregel, Alessandra Sereno, Luca Chiesa, Radmila Pavlovic, Sara Panseri, Toine F H Bovee, Bartolomeo Biolatti, Francesca T Cannizzo
The present study describes different effects of the selective androgen receptor modulator (SARM) nandrolone phenylpropionate (Nandrosol) and the β-agonist ractopamine administration in veal calves, and it investigates different strategies applied to trace these molecules. Morphological changes of gonads and accessory glands attributed to androgen effects, such as testicular atrophy, seminiferous tubule diameter reduction and hyperplasia of prostate epithelium, were detected, although SARMs are not described to cause these lesions...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27890818/the-anabolic-steroid-nandrolone-alters-cannabinoid-self-administration-and-brain-cb1-receptor-density-and-function
#14
Dicky Struik, Paola Fadda, Tamara Zara, Erica Zamberletti, Tiziana Rubino, Daniela Parolaro, Walter Fratta, Liana Fattore
Clinical and pre-clinical observations indicate that anabolic-androgenic steroids can induce neurobiological changes that alter the rewarding effects of drugs of abuse. In this study, we investigated the effect of the anabolic steroid nandrolone on the rewarding properties of the cannabinoid CB1 receptor agonist WIN55,212-2 (WIN) in rats. Lister Hooded male rats were treated intramuscularly with nandrolone (15mg/kg) or vehicle for 14 consecutive days, and then allowed to self-administer WIN (12.5μg/kg/infusion) intravenously...
January 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27875951/effect-of-supraphysiological-doses-of-nandrolone-decanoate-upon-aldosterone-concentration-and-serum-na-k-levels-in-albino-mice
#15
Parmita Chowdhury, Rita Mahanta
BACKGROUND: This article is a study of adverse effects associated with the abuse of recreational drugs such as Anabolic Androgenic Steroids. Nandrolone Decanoate is one such drug often abused by athletes and bodybuilders seeking enhanced physical strength or appearance. The use of such steroids has increased dramatically over the years. OBJECTIVE: The present study was conducted to investigate the impact of nandrolone decanoate when consumed at an abused dose, upon serum aldosterone concentration in albino mice...
November 21, 2016: Cardiovascular & Hematological Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27845609/bovine-teeth-as-a-novel-matrix-for-the-control-of-the-food-chain-liquid-chromatography-tandem-mass-spectrometry-detection-of-treatments-with-prednisolone-dexamethasone-estradiol-nandrolone-and-seven-%C3%AE-2-agonists
#16
Luca Maria Chiesa, Maria Nobile, Sara Panseri, Bartolomeo Biolatti, Francesca Tiziana Cannizzo, Radmila Pavlovic, Francesco Arioli
Veterinary drugs usually have rapid clearance rates in the liver and kidney, hampering their detection in conventional matrices such as the liver or urine. Pharmacological principles such as esterification may be applied to facilitate the administration of veterinary drugs and increase drug half-life. Prednisolone, whose therapeutic administration is regulated for food producing animals in the EU, is available in its acetate form as well as nandrolone, a banned anabolic steroid, which may be obtained as nandrolone phenylpropionate and estradiol as a benzoyl ester...
January 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27752030/the-effect-of-nandrolone-treatment-with-and-without-enforced-swimming-on-histological-and-biochemical-changes-in-the-heart-and-coronary-artery-of-male-rats
#17
Asghar Tofighi, Minoo Shirpoor, M H Khadem Ansari, Alireza Shirpoor, Mitra Zerehpoosh
OBJECTIVE: Chronic anabolic androgenic steroid (AAS) consumption increases incidence of cardiovascular abnormalities in athletes and mechanisms underlying those abnormalities continue to be investigated. This study examines whether nandrolone consumption induced cardiac and coronary artery wall abnormalities via oxidative stress. It was also designed to determine whether enforced swimming augmented possible cardiotoxic effects of nandrolone in rat heart. METHODS: Twenty-four male Wistar rats were divided into 3 groups: control, nandrolone, and nandrolone with enforced swimming...
October 12, 2016: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/27562815/ovarian-sex-steroid-receptors-and-sex-hormones-in-androgenized-rats
#18
Vinícius Augusto Simão, Luiz Gustavo De Almeida Chuffa, Isabel Cristina Cherici Camargo
This study evaluated for the first time the effects of different doses of the anabolic steroid Nandrolone Decanoate (ND) on the expression of ovarian steroid receptors (AR, ER-α, ER-β) and related sex hormones after treatment and recovery periods in adult rats. The animals were injected subcutaneously with doses of ND (1.87, 3.75, 7.5 or 15 mg/kg b.w.) or mineral oil (control group) for 15 days, and the experimental groups were divided into three periods of evaluation: (a) ND treatment for 15 days; (b) ND treatment and recovery for a period of 30 days; and, (c) ND treatment and recovery for a period of 60 days...
August 25, 2016: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27535042/novel-uses-for-the-anabolic-androgenic-steroids-nandrolone-and-oxandrolone-in-the-management-of-male-health
#19
REVIEW
Christopher Wu, Jason R Kovac
There has recently been renewed interest in novel clinical applications of the anabolic-androgenic steroid (AAS) testosterone and its synthetic derivatives, particularly given with the rising popularity of testosterone supplementation therapy (TST) for the treatment of male hypogonadism. In this manuscript, we provide a brief review of the history of AAS and discuss clinical applications of two of the more well-known AAS: nandrolone and oxandrolone. Both agents exhibit favorable myotrophic/androgenic ratios and have been investigated for effectiveness in numerous disease states...
October 2016: Current Urology Reports
https://www.readbyqxmd.com/read/27523963/genomic-and-lipidomic-actions-of-nandrolone-on-detached-rotator-cuff-muscle-in-sheep
#20
Martin Flück, Severin Ruoss, Christoph B Möhl, Paola Valdivieso, Mario C Benn, Brigitte von Rechenberg, Endre Laczko, Junmin Hu, Karl Wieser, Dominik C Meyer, Christian Gerber
Reversal of fatty infiltration of pennate rotator cuff muscle after tendon release is hitherto impossible. The administration of nandrolone starting at the time of tendon release prevents the increase in fat content, but does not revert established fatty infiltration. We hypothesised that tendon release and myotendinous retraction cause alterations in lipid related gene expression leading to fatty muscle infiltration, which can be suppressed by nandrolone through its genomic actions if applied immediately after tendon release...
January 2017: Journal of Steroid Biochemistry and Molecular Biology
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