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Nitric oxide synthase immunoreactivity in the human ileocecal region
M S Faussone-Pellegrini1, S Bacci, D Pantalone
1Department of Human Anatomy and Histology, Section of Histology E. Allara, Florence, Italy.
Neuroscience Letters
|April 11, 1994
Summary
Nitric oxide (NO) producing neurons are abundant in the ileocecal region
Area of Science:
- Neuroscience
- Gastroenterology
- Immunocytochemistry
Background:
- The human ileocecal region contains nitric oxide (NO) producing neurons.
- These neurons play a role in gastrointestinal functions.
Purpose of the Study:
- To evaluate the distribution and density of NO-producing neurons in the human ileocecal region.
- To determine the functional role of neuronal NO in this area.
Main Methods:
- Immunocytochemistry was used to identify and quantify NO synthase-positive neurons.
- The study examined various levels of the ileocecal region, including the ileum, cecum, and colon.
Main Results:
- NO-producing neurons were more prevalent in the myenteric plexus than the submucous plexus.
- The inner circular muscle layer, except in the ileum, lacked NO-expressing nerve fibers.
- Neuronal NO appears to primarily regulate muscle coat relaxation in the ileocecal region.
Conclusions:
- Neuronal NO significantly contributes to muscle relaxation in the ileocecal region.
- Its role in regulating blood flow and secretory processes is less pronounced.