Figure 5.
NMDAR activation and retrograde NO signaling are necessary for DPI. A, Sample traces of IPSCs before and after repetitive depolarization in the presence of the NO synthase inhibitor l-NAME (200 μm; top) and summary data from each cell showing l-NAME completely blocks potentiation of GABA synapses following repetitive depolarization (bottom; n = 6). B, Sample traces of IPSCs before and after repetitive depolarization in the presence of the sGC inhibitor ODQ (10 μm; top) and summary data from each cell showing ODQ completely blocks potentiation of GABA synapses following repetitive depolarization (bottom; n = 6). C, Sample traces of IPSCs before and after repetitive depolarization in the presence of the NMDAR antagonist APV (50 μm; top) and summary data from each cell showing APV completely blocks potentiation of GABA synapses following repetitive depolarization (bottom; n = 7). Calibrations: 25 pA, 10 ms.
