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  • Title: Colocalization of nitric oxide synthase and NADPH-diaphorase in the myenteric plexus of the rat gut.
    Author: Belai A, Schmidt HH, Hoyle CH, Hassall CJ, Saffrey MJ, Moss J, Förstermann U, Murad F, Burnstock G.
    Journal: Neurosci Lett; 1992 Aug 31; 143(1-2):60-4. PubMed ID: 1279479.
    Abstract:
    The pattern of distribution and colocalization of nitric oxide-synthase (NOS) and NADPH-diaphorase in the myenteric plexus of whole-mount preparations of the antrum, duodenum, ileum, caecum, proximal colon and distal colon of the rat were investigated using immunohistochemical and histochemical staining techniques. Almost all the myenteric neurons that were NOS-positive in all regions of the gut examined were also stained for NADPH-diaphorase. However, in the stomach, duodenum and ileum, only a few of the NOS-positive nerve fibres in the tertiary and secondary plexuses and circular muscle layer were also stained for NADPH-diaphorase, whereas in the caecum and distal colon almost all the NOS-positive nerve fibres were also stained for NADPH-diaphorase. The results in the present study are consistent with the view that nitric oxide (NO) has a mediating role in gastrointestinal neurotransmission.
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