Background: No information is available on the hepatic and extrahepatic pathways of bile acid synthesis in normal children and in pediatric cholestatic liver diseases. Methods: To explore the changes of the two pathways of bile acid synthesis during development, plasma concentrations of 7α-hydroxycholesterol and 27-hydroxycholesterol were measured in 50 healthy children (1 month-14 years) and compared to 18 adult controls. We also measured plasma oxysterols in 31 patients with pediatric cholestatic liver disease. Results: A progressive increase of plasma concentrations of both 27-hydroxycholesterol and 7α-hydroxycholesterol was found with age. In children with cystic fibrosis-associated liver disease plasma concentrations of 27-hydroxycholesterol were significantly lower compared to age-matched controls (5.6 ± 0.5 vs. 12.8 ± 1.1 μg/dl; p < 0.001) and paralleled significantly lower concentrations of total cholesterol. In infants with biliary atresia plasma concentrations of 27-hydroxycholesterol were significantly higher compared to age-matched controls (8.8 ± 0.8 vs. 4.4 ± 0.6 μg/dl, p < 0.001) paralleling significantly higher concentrations of total cholesterol while 7α-hydroxycholesterol resulted significantly lower (1.2 ± 0.2 vs. 2.3 ± 0.3 μg/100 mg of total cholesterol; p = 0.011). Conclusions: Our data suggest that both pathways of bile acid synthesis reach a state of maturity only after the age of 4 years and are significantly influenced also in children by liver function and intestinal absorption of cholesterol. © 2008 Elsevier B.V. All rights reserved.

Crosignani, A., DEL PUPPO, M., De Fabiani, E., Caruso, D., Gallisai, D., Mela, M., et al. (2008). Plasma oxysterols in normal and cholestatic children as indicators of the two pathways of bile acid synthesis. CLINICA CHIMICA ACTA, 395(1-2), 84-88 [10.1016/j.cca.2008.05.011].

Plasma oxysterols in normal and cholestatic children as indicators of the two pathways of bile acid synthesis

DEL PUPPO, MARINA;KIENLE, MARZIA DONATELLA;
2008

Abstract

Background: No information is available on the hepatic and extrahepatic pathways of bile acid synthesis in normal children and in pediatric cholestatic liver diseases. Methods: To explore the changes of the two pathways of bile acid synthesis during development, plasma concentrations of 7α-hydroxycholesterol and 27-hydroxycholesterol were measured in 50 healthy children (1 month-14 years) and compared to 18 adult controls. We also measured plasma oxysterols in 31 patients with pediatric cholestatic liver disease. Results: A progressive increase of plasma concentrations of both 27-hydroxycholesterol and 7α-hydroxycholesterol was found with age. In children with cystic fibrosis-associated liver disease plasma concentrations of 27-hydroxycholesterol were significantly lower compared to age-matched controls (5.6 ± 0.5 vs. 12.8 ± 1.1 μg/dl; p < 0.001) and paralleled significantly lower concentrations of total cholesterol. In infants with biliary atresia plasma concentrations of 27-hydroxycholesterol were significantly higher compared to age-matched controls (8.8 ± 0.8 vs. 4.4 ± 0.6 μg/dl, p < 0.001) paralleling significantly higher concentrations of total cholesterol while 7α-hydroxycholesterol resulted significantly lower (1.2 ± 0.2 vs. 2.3 ± 0.3 μg/100 mg of total cholesterol; p = 0.011). Conclusions: Our data suggest that both pathways of bile acid synthesis reach a state of maturity only after the age of 4 years and are significantly influenced also in children by liver function and intestinal absorption of cholesterol. © 2008 Elsevier B.V. All rights reserved.
No
Articolo in rivista - Articolo scientifico
Scientifica
Bile acid synthesis; 27-hydroxycholesterol; 7alpha-hydroxycholesterol; Pediatric cholestasis
English
84
88
5
Crosignani, A., DEL PUPPO, M., De Fabiani, E., Caruso, D., Gallisai, D., Mela, M., et al. (2008). Plasma oxysterols in normal and cholestatic children as indicators of the two pathways of bile acid synthesis. CLINICA CHIMICA ACTA, 395(1-2), 84-88 [10.1016/j.cca.2008.05.011].
Crosignani, A; DEL PUPPO, M; De Fabiani, E; Caruso, D; Gallisai, D; Mela, M; Melzi, M; Kienle, M; Colombo, C
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/5076
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