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Serum group I pepsinogens in children
Insights
Serum group I pepsinogens (PG I) are low in newborns and rise during childhood. This study suggests PG I levels can estimate gastric pepsin secretion in children.
Area of Science:
- Pediatric Gastroenterology
- Clinical Biochemistry
- Endocrinology
Background:
- Serum group I pepsinogens (PG I) are indicators of gastric acid production.
- Understanding PG I development in infants and children is crucial for assessing gastric function.
Purpose of the Study:
- To investigate the developmental changes in serum PG I levels from infancy through childhood.
- To evaluate the correlation between maternal and infant PG I levels at delivery.
- To assess the utility of serum PG I as a marker for gastric pepsin secretion in pediatric populations.
Main Methods:
- Radioimmunoassay (RIA) was used to quantify serum PG I levels.
- Blood samples were collected from premature infants, newborns, children of various ages, healthy adults, and women at delivery.
Main Results:
- Premature and newborn infants exhibited very low serum PG I concentrations.
- No correlation was observed between maternal PG I levels at delivery and those of their full-term infants.
- Serum PG I levels increased significantly in early infancy but remained reduced up to age 10.
- Findings align with known increases in pepsin secretion during childhood.
Conclusions:
- Serum PG I levels demonstrate a distinct developmental pattern in children.
- Maternal PG I does not directly influence neonatal PG I levels.
- Serum PG I serves as a reliable indirect estimate of gastric pepsin secretion during childhood.
Abstract:
Serum group I pepsinogens (PG I) were determined by a radioimmunoassay method in blood drawn from premature and newborn infants, children of various ages, a control group of young healthy adults, and a group of women at delivery. Very low concentrations of PG I were found in blood of prematures and newborns, and there was no correlation between serum PG I in women at delivery and their newborn full-term infants. Serum PG I rose abruptly during the early months of life, but remained significantly reduced up to the age of 10 years. These findings are in agreement with those reports showing an increasing pepsin secretion during childhood, and thus indirectly lend support to the use of serum PG I as an estimate of gastric pepsin secretion.