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  • 1980-1984  (3)
  • Biliary lipid composition  (2)
  • Fehlerquellen und Reinheitskontrolle  (1)
  • 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
    European archives of oto-rhino-laryngology and head & neck 238 (1983), S. 77-85 
    ISSN: 1434-4726
    Keywords: Total activity of LDH ; Perilymph ; Sources of error and purity testing ; Plasma ; Cerebrospinal fluid ; Guinea pig ; Noise exposure ; LDH-Gesamtaktivität ; Perilymphe ; Fehlerquellen und Reinheitskontrolle ; Plasma ; Liquor cerebrospinalis ; Meerschweinchen ; Schallbelastung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Gesamtaktivität der Laktatdehydrogenase (LDH) von Perilymphe (PL) der Scala tympani und Scala vestibuli, arteriellem Blutplasma und Liquor cerebrospinalis (CSF) unbelasteter und schallbelasteter Meerschweinchen wurde unter besonderer Berücksichtigung der wesentlichen Fehlerquellen untersucht. Zur Reinheitskontrolle der PL-Proben dienten simultane Protein- und Elektrolytbestimmungen (Tabelle 1). Die LDH-Aktivität wurde fluorimetrisch bestimmt. Es zeigte sich, daß zwischen PL, CSF und Plasma erhebliche LDH-Aktivitätsunterschiede bestehen (Tabelle 2). Die mittlere Aktivität ist in der PL 3–4mal höher als im CSF und nur etwa halb so hoch wie im Plasma. Zwischen PL der Scala tympani und Scala vestibuli ergab sich kein signifikanter Unterschied. Die häufigsten LDH-Werte der einzelnen Flüssigkeiten (Abb. 2) liegen etwas unter den arithmetischen Mittelwerten. Unmittelbar (≤60 min) nach 10minütiger Breitbandbelastung mit 140 dB SPL lagen die Mittelwerte der PL beider Schneckenskalen etwas höher als beim unbelasteten Tier (Tabelle 3). 18 h nach Belastungsende zeigte sich nur in der PL der Scala vestibuli eine etwas höhere Aktivität. Die Unterschiede konnten statistisch nicht gesichert werden. Die LDH-Werte von CSF und Plasma blieben sowohl ≤60 min als auch 18 h nach Schallbelastung unverändert.
    Notes: Summary The total activity of lactate dehydrogenase (LDH) of perilymph (PL), plasma, and cerebrospinal fluid (CSF) of unexposed and sound-exposed guinea pigs was examined with due consideration of the principal sources of error. To test the purity of PL samples, protein, potassium, and sodium were determined simultaneously (Table 1). The LDH was analysed fluorometrically. It was found that there are considerable differences in the LDH activities of PL, CSF, and plasma (Table 2). The mean activity of PL was three to four times higher than that of CSF and only about half that of plasma. No significant difference was found between the PL in scala tympani and scala vestibuli. The most frequent LDH values of the individual fluids (Fig. 2) were somewhat lower than the mean values calculated. Immediately (≤60 min) after exposing the animals to wide-band noise at an intensity of 140 dB SPL for 10 min, the mean PL values of the scala tympani and scala vestibuli were found to be somewhat higher than in unexposed animals (Table 3). Eighteen hours after the exposure, slightly higher activity was only detectable in PL of the scala vestibuli. The differences were not found to be significant. The LDH values of CSF and plasma remained unchanged both ≤60 min and 18 h after noise exposure.
    Type of Medium: Electronic Resource
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