Funakoshi K, Kadota T, Atobe Y, Goris R C, Kishida R
Department of Anatomy, Yokohama City University School of Medicine, Japan.
Neurosci Lett. 1997 Nov 21;237(2-3):129-32. doi: 10.1016/s0304-3940(97)00835-5.
Nicotinamide adenine dinucleotide phosphate (NADPH)-diaphorase activity was examined in the cranial sensory ganglia and brainstem of the banded dogfish, Triakis scyllia. Positive neurons were found in the vagal sensory ganglion projecting to the coelomic organs, but not in those projecting to the gills or the lateral line organs. Nerve terminals in the vagal lobe were also positive. No positive neurons were found in the glossopharyngeal, facial, or trigeminal sensory ganglia. These results suggest that use of nitric oxide in the vagal sensory transmission from the coelomic organs may have been maintained in the evolutionary process from fish to mammals.
