NADPH-diaphorase containing cells and fibers in the central nervous system of squid, Loligo bleekeri keferstein.
Distribution of NADPH-diaphorase in the central nervous system of squid was determined using histochemical technique. We found NADPH-diaphorase positive cell bodies and fibers both in the optic and the posterior anterior lobe and fibers in the peduncle lobe. These results clarify the biochemical similarity between two structurally similar organs of invertebrate and vertebrate, the peduncle lobe and the anterior basal lobe, and the cerebellum. NADPH-diaphorase positive fibers innervated the inner granule layer and the outer plexiform layer of the outer cortex of the optic lobe. This is in good agreement with avian centrifugal projection from isthmo-optic nucleus to retina where nitric oxide synthase is known to be contained. There may be at least two distinct neural systems, the motor control system and the visual information processing system, which use nitric oxide as a transmitter or modulator in the squid central nervous system.
Kimura
T
T
Supermolecular Science Division, Electrotechnical Laboratory, Tsukuba, Japan.
Shouno
O
O
Matsumoto
G
G
D000818:Animals; D001921:Brain / Q000201:enzymology*; D049832:Decapodiformes / Q000201:enzymology*; D009252:NADPH Dehydrogenase / Q000032:analysis*; D009412:Nerve Fibers / Q000201:enzymology*
D009252:NADPH Dehydrogenase