New Pub-Med Study on the Prohormone 19-nor

nattydisaster

nattydisaster

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Same compound as seen in the compound in Xtreme Tren. Can someone translate it for me?

Center for Preventive Doping Research, Institute of Cardiovascular Research and Sports Medicine, Department of Molecular and Cellular Sports Medicine, German Sports University Cologne, Carl Diem Weg 6, Cologne 50927, Germany.

One of the most frequently misused steroid precursors (prohormones) is 19-norandrostenedione (4-estrene-3,17-dione, NOR), which is, after oral administration, readily metabolised to nortestosterone, also known as nandrolone (durabolin). In this study we have characterised molecular mechanisms of its action determined its tissue specific androgenic and anabolic potency after subcutaneous (s.c.) administration and investigated potential adverse effects. Receptor binding tests demonstrate that NOR binds with high selectivity to the AR. The potency of NOR to transactivate androgen receptor (AR) dependent reporter gene expression was 10 times lower as compared to dihydrotestosterone (DHT). In vivo experiments in orchiectomised rats demonstrated that s.c. treatment with NOR resulted only in a stimulation of the weight of the levator ani muscle; the prostate and seminal vesicle weights remained completely unaffected. Like testosterone, administration of NOR resulted in a stimulation of AR and myostatin mRNA expression in the gastrocnemius muscle. NOR does not affect prostate proliferation, the liver weight and the expression of the tyrosine aminotransferase gene (TAT) in the liver. Summarizing these data it is obvious that NOR, if administrated s.c. and in contrast to its metabolite nandrolone, highly selectively stimulates the growth of the skeletal muscle but has only weak androgenic properties. This observation may have relevance with respect to therapeutic aspects but also doping prevention.

What i got from it was...was that oral administration is the same results as subq, which is what was used in the study, and the androgenic activity is low, but it is good for skeletal muscle. Nothing on the side effects though.
 
Mass_69

Mass_69

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Different compound from Xtreme Tren. 19-norandro was added to the CIII Scheduled Controlled Substances in the AAS Control Act of 2004.

Difference is the additional double-bond at c9 (estr-4-ene-3,17-dione vs. estr-4,9-diene-3,17-dione). 19-norandro converts to nandrolone, 4,9-diene (X-Tren) to dienolone.
 
nattydisaster

nattydisaster

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dam...thanks. Lots of good articles on prohormones on pubmed...all of them saying how bad they are though
 

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