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Gastrointestinal Motility Monitor GIMM
Published on: December 1, 2010
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Intestinal Motility Dysfunction in Goto-Kakizaki Rats: Role of the Myenteric Plexus
Gabriela Mandú Gimenes1, Joice Naiara Bertaglia Pereira2, Eliane Borges da Silva1
1Interdisciplinary Post-Graduate Program in Health Science, Institute of Physical Activity and Sports Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, São Paulo 01506-000, Brazil.
Cells
|October 15, 2024
Summary
Type 2 diabetes in Goto-Kakizaki rats alters the enteric nervous system. A decrease in cholinergic neurons in the small intestine may explain constipation in this diabetes model.
Area of Science:
- Gastroenterology
- Neuroscience
- Endocrinology
Background:
- Diabetes mellitus is linked to intestinal dysfunction and enteric nervous system changes.
- Goto-Kakizaki (GK) rats, a model for type 2 diabetes, exhibit constipation.
Purpose of the Study:
- To investigate morpho-quantitative changes in myenteric plexus neurons in the small and large intestines of GK rats.
- To correlate these neural changes with observed constipation in type 2 diabetes.
Main Methods:
- Morpho-quantitative analysis of myenteric plexus neurons in 120-day-old male GK rats.
- Evaluation of neuronal density (total, cholinergic, nitrergic), enteric glial cells, and neuronal cell body area using wholemount immunofluorescence.
- Confirmation of diabetes via high fasting blood glucose levels.
Main Results:
- Cholinergic neuron density decreased in the small intestine but increased in the proximal colon of GK rats.
- Enteric glial cell numbers increased in the ileum, suggesting potential gliosis.
- Neuronal cell body area increased in the jejunum and ileum of GK rats.
Conclusions:
- Reduced density of small intestinal cholinergic neurons in GK rats may underlie the constipation associated with type 2 diabetes.
- Enteric nervous system alterations in GK rats provide insights into diabetic gastrointestinal complications.
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