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. 1991 Sep 1;88(17):7797–7801. doi: 10.1073/pnas.88.17.7797

Nitric oxide synthase and neuronal NADPH diaphorase are identical in brain and peripheral tissues.

T M Dawson 1, D S Bredt 1, M Fotuhi 1, P M Hwang 1, S H Snyder 1
PMCID: PMC52390  PMID: 1715581

Abstract

NADPH diaphorase staining neurons, uniquely resistant to toxic insults and neurodegenerative disorders, have been colocalized with neurons in the brain and peripheral tissue containing nitric oxide synthase (EC 1.14.23.-), which generates nitric oxide (NO), a recently identified neuronal messenger molecule. In the corpus striatum and cerebral cortex, NO synthase immunoreactivity and NADPH diaphorase staining are colocalized in medium to large aspiny neurons. These same neurons colocalize with somatostatin and neuropeptide Y immunoreactivity. NO synthase immunoreactivity and NADPH diaphorase staining are colocalized in the pedunculopontine nucleus with choline acetyltransferase-containing cells and are also colocalized in amacrine cells of the inner nuclear layer and ganglion cells of the retina, myenteric plexus neurons of the intestine, and ganglion cells of the adrenal medulla. Transfection of human kidney cells with NO synthase cDNA elicits NADPH diaphorase staining. The ratio of NO synthase to NADPH diaphorase staining in the transfected cells is the same as in neurons, indicating that NO synthase fully accounts for observed NADPH staining. The identity of neuronal NO synthase and NADPH diaphorase suggests a role for NO in modulating neurotoxicity.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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