Forty Years Searching for Neurosteroid Binding Sites on GABAA Receptors
Mortensen M, Bright DP, Fagotti J, Dorovykh V, Cerna B, Smart TG
Neuroscience2025 (epub 2024 Jun 7)
Summary (paraphrased)
Review summarizing four decades of research locating where neurosteroids act on GABA-A receptors. It walks through mutagenesis, chimeric receptors, and electrophysiology work that mapped potentiation and direct-activation pockets within the receptor's transmembrane domains, and how endogenous neurosteroids like allopregnanolone tune inhibitory signaling. It also weighs remaining open questions about site conservation across receptor isoforms.
Why it’s in the corpus
Allopregnanolone depletion and GABA-A dysregulation are core mechanistic hypotheses in PFS/PSSD; this review gives a rigorous structural basis for claims about neurosteroid action and therapeutic targeting.
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