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Enteroendocrine cells in the developing opossum stomach
W J Krause1, J Yamada, J H Cutts
1Department of Anatomy, School of Medicine, University of Missouri-Columbia.
Journal of Anatomy
|October 1, 1986
Summary
Postnatal development of opossum gastric endocrine cells reveals significant increases in gastrin, BPP, glucagon, somatostatin, and 5-HT cells within the first week. Cell distribution shifts with age, impacting gastric function regulation.
Area of Science:
- Gastroenterology
- Developmental Biology
- Cell Biology
Background:
- Enteroendocrine cells regulate gastric function through peptide and amine secretion.
- Understanding their developmental patterns is crucial for comprehending gastric physiology.
Purpose of the Study:
- To investigate the postnatal distribution and development of five key enteroendocrine cell types in the opossum gastric mucosa.
Main Methods:
- Immunocytochemical methods were employed to detect gastrin, BPP, glucagon, somatostatin, and 5-HT immunoreactive cells.
- Opossum gastric tissues were analyzed at various postnatal stages, from newborn to older animals.
Main Results:
- All five cell types were present in newborns, with BPP cells being most numerous.
- A significant increase in all cell types occurred by the first postnatal week, with gastrin cells becoming most abundant.
- Cellular distribution changed with age: glucagon and BPP cells localized to fundic glands, while somatostatin and 5-HT cells shifted from fundus to pylorus.
Conclusions:
- Opossum gastric endocrine cell populations undergo dynamic changes during early postnatal development.
- These developmental shifts in cell distribution suggest age-dependent alterations in gastric regulatory mechanisms.