Figure 4.
NE acts through α1 and β adrenergic receptors to suppress GnRH neuron excitability. A. Perforated-patch recording from a GnRH neuron of a 33 day old male mouse showing hyperpolarizing responses to NE (100µM) and phenylephrine (PE; 30µM) followed by a partial suppression of the NE hyperpolarization by prazosin (Praz; 10µM) and then recovery of the NE action. B. Perforated-patch recording from a GnRH neuron of a 60 day old male mouse showing lack of effect of guanabenz (GBZ; 10µM). C. Perforated-patch recording from a GnRH neuron of a 42 day old female mouse showing hyperpolarizing responses to Iso (100µM), PE (30µM) and NE (100µM).