Fig. 7.
Overview of potential molecular changes in synaptic and extrasynaptic GABA-A receptor subunit plasticity in the NSW model of perimenstrual catamenial epilepsy. A working model is devised to illustrate the alterations in pharmacology due to NSW-induced changes in extrasynaptic GABA-A receptor subunit composition within the hippocampus. NSW-induced upregulation of extrasynaptic δ-subunit-containing receptors may regulate tonic inhibition and neurosteroid sensitivity. Loss of such tonic inhibition in δKO mice leads to catamenial-like seizure exacerbation following NSW paradigm.