Regional differences in the number and type of myenteric neurons in the descending colon of rats
Arq. neuropsiquiatr
; 61(2A): 220-225, Jun. 2003. ilus, tab
Article
in English
| LILACS
| ID: lil-339490
Responsible library:
BR1.1
ABSTRACT
The purpose of this study was to analyze the neuronal density of the myenteric plexus of the intermediate and antimesocolic regions of the descending colon of rats. Whole-mounts were stained with three different techniques of neuronal evidenciation. Through counts of the number of neurons in an area of 6.64 mmý under light microscopy, we found 1,271 ± 227.54 neurons with Giemsa in the intermediate region and 1,234 ± 225.92 neurons in the antimesocolic region; with the NADH-diaphorase technique we found 530 ± 92.97 neurons in the intermediate region and 539 ± 146.72 neurons in the antimesocolic region; and through the NADPH-diaphorase histochemistry, we found 417 ± 34.42 neurons in the intermediate region and 547 ± 84.01 neurons in the antimesocolic region. We conclude that there is a variation in the density of NADPH-diaphorase positive neurons in the intestinal circumference; that the NADH-diaphorase positive neuronal subpopulation represented 42.7 percent of that stained with Giemsa; and that the NADPH-diaphorase positive neurons represented 37.8 percent of the whole myenteric population
Full text:
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Collection:
International databases
Database:
LILACS
Main subject:
Colon
/
Myenteric Plexus
/
Neurons
Limits:
Animals
Language:
English
Journal:
Arq. neuropsiquiatr
Journal subject:
Neurology
/
Psychiatry
Year:
2003
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual de Maringa/BR
/
Universidade Paranaense/BR