Robert Pearce, MD, PhD – Slide of the Week

Previous experiments using genetic and pharmacological manipulations have provided strong evidence that etomidate impairs synaptic plasticity and memory by modulating a5-subunit containing GABAARs (a5-GABAARs). Since a5-GABAARs mediate tonic inhibition (TI) in hippocampal CA1 pyramidal cells, and etomidate enhances TI, etomidate enhancement of TI in pyramidal cells has been proposed as the underlying mechanism (Martin et al., 2009).