Figure 2.
GABAA receptor-mediated inhibitory postsynaptic currents (IPSCs) are intact in anti-GAD65 tissue. (A) Superimposed sample traces showing GABAA receptor-dependent IPSCs before (black trace) and after 5 μM gabazine (gray trace). Lowercase letters indicate the current at the holding potential (a), stimulus artifact (b), GABAAR-mediated IPSC (c), and stimulation-evoked trace after gabazine (d). (B) Whole-cell patch-clamp recordings confirmed that IPSCs evoked by near field stimulation were entirely GABAA receptor-dependent. (C) Input-output relationship of GABAAR-mediated IPSCs was not significantly different between anti-GAD65 and control tissues. (D) The current-voltage relationship revealed that the reversal potential for GABAAR-mediated synaptic responses was indistinguishable between anti-GAD65-treated animals and controls.