3d image of isopregnanolone skeletal formula

isopregnanolone isoallopregnanolone epiallopregnanolone sepranolone epipregnanolone tetrahydroprogesterone endogenous neurosteroid epimer natural allopregnanolone subunit negative allosteric modulator gabaa receptor antagonizes anesthesia sedation saccadic eye movements learning impairment hormonal positive progesterone intermediate menstrual cycle premenstrual dysphoric disorder disability difficulty rendering neurotransmitter agonist neuromodulatory nervous system brain endocannabinoid stress appetite memory signaling neuroscience hormone function action endocrine endocrinology