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Isolation of Neonatal Extrahepatic Cholangiocytes
Published on: June 5, 2014
Urinary monohydroxy bile acids in young infants with obstructive jaundice
Acta Paediatrica Scandinavica
|January 1, 1982
Summary
Young infants lack lithocholic acid but excrete 3 beta-hydroxy-5-cholenoic acid, a finding significant for diagnosing obstructive jaundice in infants and adults. This bile acid
Area of Science:
- Biochemistry
- Pediatric Gastroenterology
- Metabolic Disorders
Background:
- Bile acids are crucial for digestion and metabolism.
- Monohydroxy bile acids play a role in liver function and disease.
- Understanding bile acid profiles in infants is vital for diagnosing pediatric liver conditions.
Purpose of the Study:
- To quantitatively determine urinary monohydroxy bile acids in young infants.
- To compare bile acid profiles in infants with and without obstructive jaundice.
- To investigate the presence and levels of specific monohydroxy bile acids, such as 3 beta-hydroxy-5-cholenoic acid, in different age groups and conditions.
Main Methods:
- Urine samples were fractionated using an aluminum oxide column.
- Quantitative determination of urinary monohydroxy bile acids was performed.
- Bile acid levels were measured in young infants, older children, and adults with obstructive jaundice.
Main Results:
- Lithocholic acid was absent in all young infant samples.
- 3 beta-hydroxy-5-cholenoic acid was detected in all young infants.
- Infants with biliary atresia and neonatal hepatitis showed elevated 3 beta-hydroxy-5-cholenoic acid excretion compared to total bile acids.
- Older children and adults with obstructive jaundice exhibited higher excretion rates of 3 beta-hydroxy-5-cholenoic acid.
- Excretion of 3 beta-hydroxy-5-cholenoic acid correlated with chenodeoxycholic acid in infants and with both chenodeoxycholic acid and cholic acid in older individuals.
Conclusions:
- The absence of lithocholic acid and presence of 3 beta-hydroxy-5-cholenoic acid are characteristic of young infants.
- Urinary 3 beta-hydroxy-5-cholenoic acid levels may serve as a biomarker for obstructive jaundice in pediatric populations.
- The correlation between 3 beta-hydroxy-5-cholenoic acid and other bile acids provides insights into metabolic pathways in liver disease.
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