Journal: Journal of Neurophysiology
Article Title: CB1 modulation of temporally distinct synaptic facilitation among local circuit interneurons mediated by N-type calcium channels in CA1
doi: 10.1152/jn.00831.2010
Figure Lengend Snippet: Temporary release-independence via CB1 receptors at synapses displaying DORF. A: reconstruction of a LM-SCA and a basket cell (black soma, green axon). B: bath application of 14 μM anandamide (CB receptor agonist) enhanced the facilitation. C: the change in the onset of release of GABA in control and in AM-251; data for individual pairs are shown (n = 5). D: the delayed release and suppression of inhibition was blocked by 10 μM CB1 receptor antagonist, AM-251, changing the synaptic efficacy and the onset of the IPSPs, which appeared earlier during the train of action potentials elicited. E and F: bar graphs comparing the onset of first IPSPs during a train of presynaptic action potentials and IPSP latency at DORF, FDF, and depressing synapse in control and after bath application of AM-251. Onset of the first IPSP seem to be delayed at connections between LM-SCA and SCA interneurons. G: comparison of change in paired-pulse ratios (PPRs) in control and AM-251. *Significantly different than control first IPSPs.
Article Snippet: The endogenous CB receptor agonist anandamide (in water soluble emulsion) (14 μM) and CB1 receptor inverse agonist/antagonists AM-251 (5 μM) (Tocris) were used to study the CB1 receptor pharmacology of IPSPs.
Techniques: Control, Inhibition, Comparison