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Pancreatic bicarbonate response to a meal.
Acta Hepato-Gastroenterologica
|February 1, 1979
Summary
In dogs, pancreatic bicarbonate secretion closely matched stomach acid delivery to the duodenum after a meal. Approximately 5 moles of bicarbonate were secreted for every mole of acid entering the duodenum.
Area of Science:
- Gastroenterology
- Digestive Physiology
- Canine Physiology
Background:
- The regulation of gastric acid secretion and pancreatic bicarbonate release is crucial for digestion.
- Understanding the interplay between stomach acid and pancreatic function is key to digestive health.
Purpose of the Study:
- To investigate the relationship between gastric acid delivery and pancreatic bicarbonate secretion in dogs.
- To quantify the molar ratio of bicarbonate secreted in response to gastric acid.
Main Methods:
- Utilized dogs with surgically created gastric and pancreatic fistulas.
- Administered a liver extract meal to stimulate digestive secretions.
- Measured the rate of acid delivery from the stomach to the duodenum.
- Quantified the rate of pancreatic bicarbonate secretion per minute.
Main Results:
- The rate of pancreatic bicarbonate secretion paralleled the rate of hydrogen ion delivery to the duodenum.
- A consistent molar ratio was observed: approximately 5 moles of bicarbonate secreted per mole of hydrogen ion entering the duodenum.
Conclusions:
- Pancreatic bicarbonate secretion is tightly coupled to gastric acid delivery to the duodenum in dogs.
- This physiological response ensures effective neutralization of gastric acid in the small intestine.
- The findings provide quantitative insights into the digestive regulatory mechanisms.