Neuronal Nitric Oxide Synthase Immunoreactivity in the Respiratory Tract of the Frog, Rana Temporaria

Overview

Journal Histochem J

Specialty Biochemistry

Date 1995 Oct 1

PMID 8575943

Citations 1

Authors

M E Bodegas

A C Villaro

L M Montuenga

S Moncada

P Sesma

Affiliations

Soon will be listed here.

Abstract

Physiological and histochemical studies have recently supported the notion that nitric oxide (NO) is the transduction signal responsible for the non-adrenergic, non-cholinergic relaxation of the vasculature as well as the airways of the mammalian lung. We report the presence of immunoreactivity to NO synthase (NOS) in nerve cell bodies and nerve fibres in the neural plexus of the buccal cavity and lungs of the frog, Rana temporaria, using the indirect immunocytochemical technique of avidin-biotin and the NADPH-diaphorase technique. The neural ganglia located next to the muscle layer and within the connective tissue of the buccal cavity were partially immunoreactive for NOS. In the lungs, NOS immunoreactivity occurred in nerve cell bodies, as well as in both myelinated and unmyelinated nerve fibres. Fine nerve fibres immunoreactive to NOS were observed within the muscle fibre bundles and next to the respiratory epithelium. Both the presence of NOS immunoreactivity and the positive histochemical reaction for NADPH-diaphorase in the neural plexus of amphibian respiratory tract suggests a broad evolutionary role for NO as a peripheral neurotransmitter.

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Cox R, Jacob S, Oliveras G, Murakami K, Enkhbaatar P, Traber L Exp Lung Res. 2009; 35(2):104-18.

PMID: 19263280 PMC: 3845024. DOI: 10.1080/01902140802446832.

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