Neurosteroids and GABA-A Receptor Function
Now this is important
Neurosteroids are synthesized in glial cells and neurons of the central and peripheral nervous system from cholesterol or steroidal precursors imported from peripheral sources (Schumacher et al., 2000; Baulieu et al., 2007)
It mean that RAW material are:
1- DHT
2-Cholesterol
Please put attention to this:
Biosynthesis of allopregnanolone and pregnenolone sulfate (PS) from cholesterol within the neuron or glial cell . Enzymes involved are P450 side-chain cleavage (P450scc), 3α-hydroxysteroid dehydrogenase (3α-HSD), 3β-hydroxysteroid dehydrogenase (3β-HSD) and 5α-reductase. Transport of cholesterol across the mitochondrial membrane is enhanced by the steroidogenic acute-regulatory (StAR) protein and the mitochondrial benzodiazepine receptor (MBR). 5α-DHP represents 5α-dihydroprogesterone
This is even more interesting
Replacing the hydrogen of hydroxyl with methyl, thus eliminating the ability of the steroid to donate a hydrogen bond in this region, results in dramatic reduction in its potency ----->(This sound to me PFS).