neurosteroid 28 unclassified drug 26 article 22 nonhuman 20 3alpha hydroxy 5alpha pregnan 20 one 18 4 aminobutyric acid A receptor 18 Neurosteroids 18 drug synthesis 18 Animals 16 controlled study 16 rat 16 NEUROESTEROIDES 15 NEUROSTEROIDS 15 Receptors, GABA-A 14 binding affinity 14 drug structure 14 eltanolone 14 priority journal 14 GABAA receptor 12 Male 12 drug receptor binding 12 male 12 Protein Binding 10 Rats 10 Rats, Sprague-Dawley 10 animal tissue 10 pregnane derivative 10 reaction analysis 10 steroid 10 structure activity relation 10