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Dug up another abstract to support winny's potent non-A/R mediated activity,and thought I'd share it with my bro's...Note the end paragraph-NONGENOMIC(independent of DNA interaction) effect on CNS modulation.This means it's acting on nerve cells directly to increase contractile force...I love winny,haha...
Effects of the androgenic/anabolic steroid stanozolol on GABAA receptor function: GABA-stimulated 36Cl- influx and [35S] TBPS binding.
Masonis AE, McCarthy MP
J Pharmacol Exp Ther 1996 Oct 279:186-93
J Pharmacol Exp Ther . Volume 279 . Issue 1
VIEW
Abstract
We have recently demonstrated that androgenic/anabolic steroids modulate in vitro ligand binding to the benzodiazepine binding site(s) associated with the gamma-aminobutyric acidA (GABAA) receptor complex (Masonis and McCarthy, 1995). One androgenic/anabolic steroid in particular, stanozolol, appears to stabilize the GABAA receptor in a moderate-affinity state for benzodiazepine binding. In the present study, we demonstrate the effects of stanozolol on the functional responsiveness of the GABAA receptor. After pre-incubation with stanozolol, we observed a decrease in the Emax and EC50 values for GABA-stimulated 36Cl- influx into cortical synaptoneurosomes. Moreover, in the presence of stanozolol, flunitrazepam-enhanced GABA-stimulated 36Cl- influx was lost, and the GABAA receptor was stabilized in a functional state that was resistant to further desensitization by agonist. Stanozolol does not appear to reduce GABA-stimulated 36Cl- influx by acting as a channel blocker at the well-characterized channel blocker binding site, as illustrated by the GABA-sensitive biphasic effects of stanozolol on [35S] t-butylbicyclophosphorothionate binding. These results demonstrate a novel, nongenomic mechanism for androgenic/anabolic steroidal modulation of CNS function.
Effects of the androgenic/anabolic steroid stanozolol on GABAA receptor function: GABA-stimulated 36Cl- influx and [35S] TBPS binding.
Masonis AE, McCarthy MP
J Pharmacol Exp Ther 1996 Oct 279:186-93
J Pharmacol Exp Ther . Volume 279 . Issue 1
VIEW
Abstract
We have recently demonstrated that androgenic/anabolic steroids modulate in vitro ligand binding to the benzodiazepine binding site(s) associated with the gamma-aminobutyric acidA (GABAA) receptor complex (Masonis and McCarthy, 1995). One androgenic/anabolic steroid in particular, stanozolol, appears to stabilize the GABAA receptor in a moderate-affinity state for benzodiazepine binding. In the present study, we demonstrate the effects of stanozolol on the functional responsiveness of the GABAA receptor. After pre-incubation with stanozolol, we observed a decrease in the Emax and EC50 values for GABA-stimulated 36Cl- influx into cortical synaptoneurosomes. Moreover, in the presence of stanozolol, flunitrazepam-enhanced GABA-stimulated 36Cl- influx was lost, and the GABAA receptor was stabilized in a functional state that was resistant to further desensitization by agonist. Stanozolol does not appear to reduce GABA-stimulated 36Cl- influx by acting as a channel blocker at the well-characterized channel blocker binding site, as illustrated by the GABA-sensitive biphasic effects of stanozolol on [35S] t-butylbicyclophosphorothionate binding. These results demonstrate a novel, nongenomic mechanism for androgenic/anabolic steroidal modulation of CNS function.
