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  • Chronic intrahepatic cholestasis  (2)
  • Phenobarbital  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 143 (1984), S. 35-40 
    ISSN: 1432-1076
    Keywords: Chronic intrahepatic cholestasis ; Biliary lipid composition ; Bile acids ; Gallstones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Biliary lipid composition, standard liver function tests, serum lipids and faecal fat excretion were studied in 15 children with chronic intrahepatic cholestasis (severe intrahepatic cholestasis, n=6; paucity of intralobular bile ducts, n=4; benign recurrent cholestasis, n=5) and compared to 15 children without gastrointestinal diseases. Severe and benign intrahepatic cholestasis were associated with normal or moderately elevated serum lipids. Biliary lipid concentrations were extremely reduced, bile acid concentrations were below the critical micellar concentration. This may account for the high incidence of gallstone formation in these patients. Remission periods in patients with benign recurrent cholestasis were not followed by complete normalisation of biliary lipid concentrations, indicating a primary defect in hepatic excretory function. Children with paucity of intralobular bile ducts showed markedly increased serum lipids, but only a two-fold reduction in biliary lipid concentrations. Cholic acid was the predominant bile acid in bile of all cholestatic children even during remission. Neither increased levels of monohydroxy bile acids nor unusual bile acids could be identified in notable amounts.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 143 (1984), S. 41-44 
    ISSN: 1432-1076
    Keywords: Chronic intrahepatic cholestasis ; Biliary lipid composition ; Bile acids ; Phenobarbital
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of phenobarbital (5.4–7.5 mg/kg body weight) for 14 days were studied in four children with severe intrahepatic cholestasis (group I) and in four with a syndromatic type of paucity of intralobular bile ducts (group II). Phenobarbital administration resulted in a moderate improvement of pruritus in all patients. There was a significant decrease of bilirubin in serum (group I: from 4.8 to 2.7 mg/dl; group II: from 6.1 to 2.1 mg/dl); total bile acids (group I: from 416 to 337 μmol/l; group II: from 156 to 123 μmol/l) and cholesterol (group I: from 248 to 207 mg/dl; group II: from 351 to 292 mg/dl). Alkaline phosphatase activity increased from 929 to 1126 U/l in group I and from 1751 to 2360 U/l in group II. SGOT and SGPT activities remained unchanged in both groups. In group I total biliary lipid concentration and bile acid output increased from 0.09 to 0.17 g/dl and from 3.9 to 7.2 μmol/kg per 30 min, respectively. Molar percentages of cholesterol, phospholipids and bile acids in bile remained unchanged. In group II total lipid concentrations and bile acid output increased from 1.62 to 2.0 g/dl and from 27.8 to 39.1 μmol/kg per 30 min, respectively. The molar percentage of cholesterol decreased from 5.6 to 3.5 mol%. The present results indicate that short term administration of phenobarbital has only minimal effects on biliary lipid metabolism in children with chronic intrahepatic cholestasis.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 287 (1975), S. 33-45 
    ISSN: 1432-1912
    Keywords: Bile Formation ; Lipid Secretion ; Phenobarbital ; Spironolactone ; Pregnenolone-16α-Carbonitrile
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of pretreatment for 4 days with the hepatic microsomal enzyme inducers phenobarbital (8 mg/100 g body weight), spironolactone (20 mg/100 g body weight) and pregnenolone-16α-carbonitrile (7 mg/100 g body weight) on bile flow and bile lipid secretion have been compared in rats. Similar to phenobarbital, spironolactone and pregnenolone-16α-carbonitrile increased bile flow but did not alter bile salt excretion, indicating that these agents increased bile salt independent bile formation. This finding could be substantiated for spironolactone by studies of the relationship between bile salt excretion and bile flow during bile salt infusions. Whereas phenobarbital decreased cholesterol and phospholipid secretion to 39 and 49%, respectively, spironolactone and pregnenolone-16α-carbonitrile more than doubled cholestal excretion without influencing phospholipid output. As a consequence, marked differences in the effect on cholesterol saturation were observed: a decrease by phenobarbital and an increase following spironolactone and pregnenolone-16α-carbonitrile. The present studies demonstrate that different types of enzyme inducers may share certain effects on bile formation and differ in others.
    Type of Medium: Electronic Resource
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