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Neurocalcin-α immunoreactivity in the enteric nervous system of young and aged rats

Corns, R. A., Hidaka, H. and Santer, Robert Murray 2002. Neurocalcin-α immunoreactivity in the enteric nervous system of young and aged rats. Cell Calcium 31 (2) , pp. 53-58. 10.1054/ceca.2001.0261

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Abstract

The distribution of the calcium binding protein neurocalcin a has been examined in the entericnervous system of young adult (3 months) and aged (24+ months) male rats by immunofluorescence. Neurocalcin-immunoreactive (NC-ir) neurons were observed in the submucous and myenteric plexuses throughout the gastrointestinal tract from the oesophagus to the distal large intestine. NC-ir nerve terminals were also seen on NC-ir and NC-negative neurons. Semiquantitative estimates revealed fewer NC-ir neurons in the submucous plexus than in the myenteric plexus. The gre atest occurrence of NC-ir neurons was in the small and large intestine. NC-ir axons were seen in the mucosa and also in between the ganglia of the myenteric plexus. In the aged rats, there were no discernible changes in the numbers of NC-ir neurons in th e oesophagus and stomach, with an increase in the pylorus and slight decreasesin the small and large intestines. No decrease in NC-ir was observed in the distal large intestine. NC-ir neurons never contained lipofuscin age pigment and many enteric neuro ns devoid of NC-ir contained age pigment. Like other previously investigated calcium-binding proteins in enteric neurons, the distribution of NC shows much variability from one part of the intestine to another. The observed slight decreases in the number of NC-ir enteric neurons in aged rats may compromise the regulation of calcium in these neurons.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Elsevier
ISSN: 0143-4160
Last Modified: 04 Jun 2017 06:51
URI: http://orca-mwe.cf.ac.uk/id/eprint/65611

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