head JofIMAB
Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2022, vol. 28, issue4
Subject Area: Medicine
DOI: 10.5272/jimab.2022284.4671
Published online: 09 November 2022

Original article
J of IMAB. 2022 Oct-Dec;28(4):4671-4675
Desislava M. Marinova1ORCID logo Corresponding Autoremail, Miroslav L. Dobrev1ORCID logo, Tihomir R. Rashev1ORCID logo, Iskren K. Gerasimov1ORCID logo, Vladislav Nankov2ORCID logo, Stefan V. Trifonov1ORCID logo,
1) Department of Anatomy, Histology, Cytology and Biology, Faculty of Medicine, Medical University - Pleven, Bulgaria.
2) Scientific Research Laboratory, Medical University, Pleven, Bulgaria.

The enteric nervous system is the largest and most complex division of the peripheral nervous system. Located in the wall of the gastrointestinal tract, it is a regulatory and coordination unit of the nervous system. Neurochemical, pharmacological, and functional studies describe three main classes of neurons in the enteric nervous system– primary afferent, interneurons and motor neurons. These are grouped in ganglia, which are connected and form plexuses. Acetylcholine is a major neurotransmitter that plays a pivotal role in the enteric nervous system and several non-neuronal structures. Internal cholinergic neurons and vagus terminals in the enteric nervous system use acetylcholine as the main excitatory neurotransmitter, regulating motility and mucosal function in the digestive system. The enzyme choline acetyltransferase (ChAT) that catalyzes the synthesis of acetylcholine represents the most specific cholinergic marker. Recent markers used to visualize cholinergic structures are the splicing variants of ChAT mRNA that are transcribed from the ChAT gene. Different alternatively spliced ChAT mRNA variants are transcribed in many animal species, including humans. In the mouse, seven variants in the 5’-noncoding region and two variants that differ in their coding region are described. Morphological, genetic and molecular analysis of ChAT and its splicing variants, as the most reliable and frequently used marker for cholinergic structures, would contribute to a better understanding of the physiological and pathological states of cholinergic neurons in the enteric nervous system.

Keywords: enteric nervous system, acetylcholine, choline acetyltransferase, mRNAsplicing variant, mouse,

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Please cite this article as: Marinova DM, Dobrev ML, Rashev TR, Gerasimov IG, Nankov V, Trifonov SV. Acetylcholine and its synthesizing enzyme choline acetyltranspherase in the enteric nervous system. J of IMAB. 2022 Oct-Dec;28(4):4671-4675. DOI: 10.5272/jimab.2022284.4671

Corresponding AutorCorrespondence to: Desislava M. Marinova, MD, Department of Anatomy, Histology, Cytology and Biology, Faculty of Medicine, Medical University – Pleven; 1, St. Kliment Ohridski Str., 5800 Pleven, Bulgaria; E-mail: drdesko@gmail.com

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Received: 04 February 2022
Published online: 09 November 2022

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