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Now showing items 11-20 of 5412
Steroids and flavonoids of Porcelia macrocarpa
(2004)
Three mixtures of steroids (1a+1b, 2a+2b and 3a+3b) and two flavonoid glycosides (4 and 5) were isolated from the ethanol extract of branches of Porcelia macrocarpa (Warm.) R. E. Fries (Annonaceae). The steroids ...
Developmental and Functional Effects of Steroid Hormones on the Neuroendocrine Axis and Spinal Cord
(Wiley, 2016)
This review highlights the principal effects of steroid hormones at central and peripheral levels in the neuroendocrine axis. The data discussed highlight the principal role of oestrogens and testosterone in hormonal ...
Synthesis and acetylcholinesterase inhibitory activity of polyhydroxylated sulfated steroids: structure/activity studies
(Elsevier, 2013-08)
Disulfated and trisulfated steroids have been synthesized from cholesterol and their acetylcholinesterase inhibitory activity has been evaluated. In our studies we have found that the activity was not only dependent on the ...
Reconstitution of the steroid receptor heterocomplex
(Humana Press, 2019-03)
Steroid receptors are members of a subfamily of the nuclear receptor superfamily. They play a dual role of steroid hormone receptors and transcription factors. Actually, these receptors are steroid-activated transcription ...
Early steroid withdrawal in pediatric renal transplant on newer immunosuppressive drugs
(Blackwell, 2007)
Steroids have been a cornerstone in renal transplant immu-
nosuppression. New immunosuppressive drugs have led to protocols
using early steroid withdrawal or complete avoidance. A prospective
protocol in 23 pediatric ...
Follicular environment and oocyte maturation: roles of local peptides and steroids
(Brazilian Coll Animal Reproduction, 2017-07-01)
A large amount of data on the mechanisms regulating cumulus-oocyte maturation in mammals has been generated in the last 20 years. It has been made clear that oocyte-secreted factors play a central role in the control of ...
Use of enhancement drugs amongst athletes and television celebrities and public interest in androgenic anabolic steroids. Exploring two Peruvian cases with Google Trends
(Elsevier, 2017)
Non-medical use of anabolic-androgenic steroids (AAS) has been reported in non-competitive athletes with the intention to improve physical appearance, particularly muscle size and definition. The misuse of AASdnamely, ...
Analysis of Steroids using Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry-Mass Spectrometry (SPME-GC-MS-MS)
(2014)
Direct immersion SPME-GC-MS-MS was used for the analysis of steroids in water at part-per-trillion(ppt) and lower concentrations. The method was validated and extended to real sample analysis. The method were linear from ...
H-1 NMR determination of adulteration of anabolic steroids in seized drugs
(Elsevier B.V., 2018-10-01)
Counterfeiting and adulteration of pharmaceuticals is a prevalent problem worldwide and represents a major health risk to the population, with anabolic steroids being one of the main classes of drugs consumed and obtained ...