A Few TH-Immunoreactive Neurons Closely Appose DMX-Located Neuronal Somata Projecting to the Stomach Prepyloric Region in the Pig

The vagus nerve is responsible for efferent innervation and functional control of stomach functions. The efferent fibers originate from neurons located in the dorsal motor nucleus of the vagus (DMX) and undergo functional control of the local neuroregulatory terminals. The aim of the present study w...

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Bibliographic Details
Published in:Animals (Basel) 2020-11, Vol.10 (11), p.2008
Main Authors: Calka, Jaroslaw, Ganko, Marta, Rychlik, Andrzej
Format: Article
Language:English
Subjects:
Brief Report
dorsal motor vagal nucleus
Fibers
Foundations
Functionals
Innervation
Motor nuclei
Neurons
Parasympathetic nervous system
Physiological aspects
prepyloric region
Stomach
Stomata
Swine
tyrosine hydroxylase
Vagus nerve
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Summary:The vagus nerve is responsible for efferent innervation and functional control of stomach functions. The efferent fibers originate from neurons located in the dorsal motor nucleus of the vagus (DMX) and undergo functional control of the local neuroregulatory terminals. The aim of the present study was to examine the existence of morphological foundations for direct regulatory action of the local TH-immunoreactive neurons on parasympathetic efferent neurons supplying the prepyloric region of the porcine stomach. Combined injection of neuronal retrograde tracer Fast Blue into the stomach prepyloric region with TH immunostaining was used in order to visualize spatial relationship between DMX-located stomach prepyloric region supplying neuronal stomata and local TH-IR terminals. We confirmed existence of TH-immunoreactive neural terminals closely opposing the stomach prepyloric region innervating neurons at the porcine DMX area. The observed spatial relationship points out the possibility of indirect catecholaminergic control of the stomach function exerted through preganglionic parasympathetic efferent neurons in the pig.
ISSN:2076-2615
2076-2615
DOI:10.3390/ani10112008