Serum cholecystokinin, basal acid secretion, and infantile pyloric stenosis

Area of Science:

• Pediatric Gastroenterology
• Endocrinology
• Digestive Physiology

Background:

• Pyloric stenosis is a common congenital condition affecting the gastric outlet in infants.
• Cholecystokinin (CCK) plays a role in regulating gastric function.
• Altered gastric physiology may be present in infants with pyloric stenosis.

Purpose of the Study:

• To investigate fasting serum cholecystokinin-like activity in infants with pyloric stenosis.
• To compare basal acid secretion parameters between infants with and without pyloric stenosis.

Main Methods:

• Fasting serum cholecystokinin-like activity was measured in 21 infants with pyloric stenosis and 13 controls.
• Basal acid secretion was assessed by one-hour continuous gastric aspiration.
• Gastric volume, total acidity, and free acidity were determined.

Main Results:

• No significant difference in fasting cholecystokinin-like activity was observed between the pyloric stenosis group and controls.
• Infants with pyloric stenosis demonstrated significantly greater basal gastric volume.
• Total and free gastric acidity were also elevated in the pyloric stenosis group.

Conclusions:

• Fasting cholecystokinin levels do not appear to be significantly altered in infantile pyloric stenosis.
• Infants with pyloric stenosis exhibit enhanced basal gastric acid secretion and volume.
• These findings suggest underlying differences in gastric physiology beyond outlet obstruction.