Morphometry and acetylcholinesterase activity of the myenteric plexus of the wild mouse Calomys callosus

Morphometry and acetylcholinesterase activity of the myenteric plexus of the wild mouse Calomys callosus

Author Maifrino, Laura Beatriz Mesiano Autor UNIFESP Google Scholar
Prates, José Carlos Autor UNIFESP Google Scholar
DeSouza, R. R. Google Scholar
Liberti, E. A. Google Scholar
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract The myenteric plexus of the digestive tract of the wild mouse Calomys callosus was examined using a histochemical method that selectively stains nerve cells, and the acetylcholinesterase (AChE) histochemical technique in whole-mount preparations, Neuronal density was 1,500 +/- 116 neurons/cm(2) (mean +/- SEM) in the esophagus, 8,900 +/- 1,518 in the stomach, 9,000 +/- 711 in the jejunum and 13,100 +/- 2,089 in the colon, The difference in neuronal density between the esophagus and other regions was statistically significant, The neuron profile area ranged from 45 to 1,100 mu m(2). The difference in nerve cell size between the jejunum and other regions was statistically significant. AChE-positive nerve fibers were distributed within the myenteric plexus which is formed by a primary meshwork of large nerve bundles and a secondary meshwork of finer nerve bundles, Most of the nerve cells displayed AChE activity in the cytoplasm of different reaction intensities. These results are important in order to understand the changes occurring in the myenteric plexus in experimental Chagas' disease.
Keywords myenteric plexus
wild mouse
Calomys callosus
Language English
Date 1997-05-01
Published in Brazilian Journal Of Medical And Biological Research. Sao Paulo: Assoc Bras Divulg Cientifica, v. 30, n. 5, p. 627-632, 1997.
ISSN 0100-879X (Sherpa/Romeo, impact factor)
Publisher Assoc Bras Divulg Cientifica
Extent 627-632
Access rights Open access Open Access
Type Article
Web of Science ID WOS:A1997WZ10200009
SciELO ID S0100-879X1997000500009 (statistics in SciELO)

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