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Carbohydrate metabolism in infants with biliary atresia
Insights
Infants with biliary atresia (BA) show normal carbohydrate metabolism during parenteral nutrition. Unlike adults, these infants do not experience glucose intolerance, allowing for safe nutritional support.
Area of Science:
- Pediatric Gastroenterology
- Hepatology
- Metabolic Research
Background:
- Biliary atresia (BA) is a serious neonatal liver disease.
- Understanding carbohydrate metabolism in BA is crucial for nutritional management.
- Previous studies suggest glucose intolerance in adult obstructive jaundice.
Purpose of the Study:
- To investigate carbohydrate metabolism in infants with BA.
- To compare metabolic profiles pre- and post-operatively during parenteral nutrition.
- To assess the impact of liver fibrosis severity on metabolic changes.
Main Methods:
- Studied 9 infants with BA pre- and post-operatively.
- Administered parenteral nutrition for 7 days.
- Measured plasma glucose, immunoreactive insulin (IRI), and C-peptide immunoreactivity (CPR).
- Compared findings with a control group of infants without liver dysfunction.
Main Results:
- Infants with BA and moderate liver fibrosis showed normal glucose, IRI, and CPR levels compared to controls.
- One infant with marked liver fibrosis exhibited a transiently low molar IRI/CPR ratio, suggesting increased hepatic insulin extraction.
- Metabolic parameters normalized postoperatively, returning to baseline levels.
Conclusions:
- Infants with BA do not exhibit the glucose intolerance seen in adults with obstructive jaundice.
- Parenteral nutrition can be safely administered to infants with BA without significant carbohydrate metabolism disturbances.
- Metabolic profiles in BA infants are generally stable, with transient changes in specific cases.
Abstract:
Carbohydrate metabolism in 9 infants with biliary atresia (BA) was investigated preoperatively and during the early postoperative period when these infants were on parenteral nutrition for 7 days. Findings were compared with data on infants without liver dysfunction. Changes of plasma glucose, immunoreactive insulin (IRI) and C-peptide immunoreactivity (CPR) in the biliary atresia group with moderate liver fibrosis were the same as those in the control group. However, in one patient with marked liver fibrosis, the molar IRI/CPR ratio was significantly low, thereby suggesting an increased hepatic insulin extraction. This change, however, was transient and the molar IRI/CPR ratio gradually returned to the level of other BA patients and the control groups after the 1st postoperative day. This study shows that in infants with BA, the glucose intolerance seen in adults with obstructive jaundice is absent and the parenteral nutrition can be performed without severe changes of carbohydrate metabolism.