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Histoplanimetrical Study on the Spatial Relationship of Distribution of Indigenous Bacteria with Mucosal Lymphatic Follicles in Alimentary Tract of Rat
- Source :
- Journal of Veterinary Medical Science. 71:621-630
- Publication Year :
- 2009
- Publisher :
- Japanese Society of Veterinary Science, 2009.
-
Abstract
- The spatial relationship between the distribution of indigenous bacteria (IB) and the situation of mucosal lymphatic follicles (LF) is histoplanimetrically studied in the rat alimentary tract. From the oral cavity to the nonglandular part of the stomach, IB adhered to the corneal layer of the most luminal mucosa. In the glandular part of the stomach, IB adhered only to the most luminal mucosa but not in the gastric pits. In the small intestine, IB consistently adhered around the apices of both intestinal villi and the domes, and their amounts decreased toward their basal portions. No IB entered the intestinal crypts. In the large intestine, IB consistently adhered to the most luminal mucosa. Numerous IB were suspended in the intestinal crypts of both the cecum and the proximal colon, whereas there were no IB in the crypts of the distal colon and the rectum. When IB spread over the basal portions of the intestinal villi, IB with the same morphology were detected on the neighboring LF, whereas no bacteria were detected on the neighboring LF, when IB were located in the apical to middle portions of the intestinal villi. This close relationship between the distribution of IB and mucosal LF was also observed in the large intestine. These results suggest that the most luminal mucosae are a fundamental settlement site of IB throughout the alimentary tract and that the hyperproliferation of IB's colonies might be detected by neighboring LF in the rat intestine.
- Subjects :
- Male
Pathology
medicine.medical_specialty
General Veterinary
Lymphoid Tissue
Stomach
digestive, oral, and skin physiology
Colony Count, Microbial
Rectum
Histology
Biology
Small intestine
Rats
Cecum
medicine.anatomical_structure
Lymphatic system
Gastric Mucosa
Gastric pits
medicine
Animals
Large intestine
Intestinal Mucosa
Rats, Wistar
Digestive System
Subjects
Details
- ISSN :
- 13477439 and 09167250
- Volume :
- 71
- Database :
- OpenAIRE
- Journal :
- Journal of Veterinary Medical Science
- Accession number :
- edsair.doi.dedup.....f1281fc2986c76d2c9de15325c00f552