Distribution of NADPH-diaphorase in the cerebral blood vessels of rats: a histochemical study

Hidekazu Tomimoto; Ichiro Akiguchi; Hideaki Wakita; Shinichi Nakamura; Jun Kimura

doi:10.1016/0304-3940(93)90450-Y

Distribution of NADPH-diaphorase in the cerebral blood vessels of rats: a histochemical study

Hidekazu Tomimoto, Ichiro Akiguchi, Hideaki Wakita, Shinichi Nakamura, Jun Kimura

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

NADPH-diaphorase (neuronal nitric oxide synthase) activity in the cerebral blood vessels was investigated by light and electron microscopic histochemistry to elucidate the sites of nitric oxide production. Networks of adventitial nerves containing NADPH-diaphorase were distributed in all parts of the circle of Willis. However, NADPH-diaphorase activity in adventitial nerves was much sparser in the region of the posterior cerebral artery, and absent in the pial arteries smaller than 100 μm in diameter. Endothelial cells were intensely stained in arteries and arterioles. These results support the hypothesis that vascular tone is regulated by nitric oxide, which is derived from endothelial cells and adventitial nerves.

Original language	English
Pages (from-to)	105-108
Number of pages	4
Journal	Neuroscience Letters
Volume	156
Issue number	1-2
DOIs	https://doi.org/10.1016/0304-3940(93)90450-Y
Publication status	Published - 25-06-1993
Externally published	Yes

All Science Journal Classification (ASJC) codes

Neuroscience(all)

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Tomimoto, H., Akiguchi, I., Wakita, H., Nakamura, S., & Kimura, J. (1993). Distribution of NADPH-diaphorase in the cerebral blood vessels of rats: a histochemical study. Neuroscience Letters, 156(1-2), 105-108. https://doi.org/10.1016/0304-3940(93)90450-Y

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