Several phenomena are currently under study. Ionotropic histamine receptors and H2-receptors modulate supraoptic oxytocin neuronal excitability and dye coupling. Journal of Comparative Neurology, in press. G.I. Immunocytochemical basis for meningeo-glial networks.
Histamine suppresses non-NMDA excitatory synaptic currents in rat supraoptic nucleus neurons.
Nitric oxide via cGMP-dependent mechanisms increases dye coupling and excitability of rat supraoptic nucleus neurons. Hatton, G.I. 1998. Synaptic modulation of neuronal coupling. Intrinsic controls of intracellular calcium and intercellular communication in the regulation of neuroendocrine cell activity. Mechanisms of neuroendocrine cell excitability.