title: 3beta-hydroxy-delta5 -C27-steroid dehydrogenase deficiency: diagnosis and treatment.
abstract: The aim of this study was to evaluate the effects of bile acid treatment and to obtain further information about the pathway of bile acid biosynthesis in a patient with 3beta-hydroxy-delta5-C27-steroid dehydrogenase/isomerase (3beta-HSD) deficiency by gas chromatography-mass spectrometry. Results showed that at 2 months of age, 3beta-hydroxy-5-cholen-24-oic acid (3.0 micromol/mmol Cr, 7.9%) was detected in the urine in essentially the same relative amount as 3beta,7alpha-dihydroxy- and 3beta,7alpha,12alpha-trihydroxy-5-cholen-24-oic acids (3.7 micromol/mmol Cr, 9.8%) during ursodeoxycholic acid treatment combined with prednisolone. As a result, diagnosis was delayed until 18 months of age. One month later with substitution of chenodeoxycholic acid treatment, urinary 3beta,7alpha-dihydroxy- and 3beta,7alpha,12alpha-trihydroxy-5-cholen-24-oic acids decreased significantly, and subsequent improvement of liver dysfunction was accelerated. Chenodeoxycholic acid treatment is useful in 3beta-HSD deficiency. However, in the diagnosis of this disease in early life, it should be noted that the acidic pathway may be the major route for bile acid biosynthesis in the neonatal period. Diagnosis of 3beta-HSD deficiency may have been delayed by administration of ursodeoxycholic acid, resulting in prolonged diagnostic investigation in this child with cholestasis. Further, use of prednisolone may have been contraindicated.
authors.affiliation: Department of Pediatrics and Child Health, Kurume University School of Medicine, Fukuoka, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yamato
authors.forename: A
authors.initials: A
authors.lastname: Kimura
authors.forename: T
authors.initials: T
authors.lastname: Murai
authors.forename: T
authors.initials: T
authors.lastname: Yoshimura
authors.forename: T
authors.initials: T
authors.lastname: Kurosawa
authors.forename: S
authors.initials: S
authors.lastname: Terazawa
authors.forename: A
authors.initials: A
authors.lastname: Takao
authors.forename: K
authors.initials: K
authors.lastname: Maeda
authors.forename: E
authors.initials: E
authors.lastname: Nakashima
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita
authors.forename: H
authors.initials: H
authors.lastname: Kato
mesh_terms: D015096:3-Hydroxysteroid Dehydrogenases / Q000172:deficiency*; D001647:Bile Acids and Salts / Q000096:biosynthesis* / Q000627:therapeutic use; D002780:Cholestasis, Intrahepatic / Q000188:drug therapy / Q000201:enzymology* / Q000652:urine; D006801:Humans; D007223:Infant; D008297:Male; D016896:Treatment Outcome
chemical_list: D001647:Bile Acids and Salts; D015096:3-Hydroxysteroid Dehydrogenases; C031954:delta(5)-3 beta-hydroxysteroid dehydrogenase