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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 63 (1985), S. 948-958 
    ISSN: 1432-1440
    Keywords: Alcoholism ; Fetal alcohol syndrome ; Genitourinary tract malformations ; Phosphate and magnesium depletion ; Rhabdomyolysis ; Acute renal failure ; Hypertension ; Alkohol ; Alkoholische Embryopathie ; Urogenitaltraktschädigung ; Phosphatund Magnesiumdepletion ; Rhabdomyolyse ; Akutes Nierenversagen ; Hypertonie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nephrologisch wichtige Störungen des schwereren Alkoholismus manifestieren sich auf verschiedenen Ebenen. Eine direkte Schädigung der Nieren und abführenden Harnwege ist bislang ausschließlich bei alkoholischer Embryopathie nachgewiesen. Beim Erwachsenen dominieren unspezifische und komplexe Elektrolytstörungen mit Akzentuierung im Alkohol-Entzugssyndrom. Die Niere ist nicht selten primäre Ursache verschiedener Störungen, sie trägt ferner zur — oft inadäquaten — Kompensation extrarenal entstandener Stoffwechselstörungen (z.B. Phosphatmangel, Hypoglykämie) bei. Der alkoholassoziierten Uratretention, hervorgerufen durch Hyperlaktatämie oder Erhöhung derβ-Hydroxybuttersäure, kommt — wegen meist mäßiger Ausprägung — für die Entwicklung einer hyperurikämischen Nephropathie nur geringe Bedeutung zu. Alkoholexzeß (akut oder chronisch) prädisponiert zur Rhabdomyolyse mit konsekutivem Nierenversagen. Möglicherweise ist bei schwerem Alkoholismus und Myopathie die Vulnerabilität der Nieren für andere Noxen gesteigert. Bei der Ratte wird das Glyzerin-induzierte akute Nierenversagen durch Alkoholvorbehandlung verstärkt. Alkohol begünstigt ferner bei Normotonikern und Hypertonikern einen Blutdruckanstieg, der seinerseits das Risiko einer Nierenschädigung erhöht.
    Notes: Summary Different nephrological derangements are observed in severe alcoholics. Until now the direct toxicity of ethanol is only shown in the fetal alcohol syndrome with various malformations of the genitourinary tract. In the adult the kidney is often involved in the development, maintenance and counterregulation of complex electrolyte disturbances like phosphate and potassium hypoglycemia etc. The alcohol associated retention of urate, induced by hyperlactatemia and/or increasedβ-hydroxybutyrate concentration is only rarely complicated by urate nephropathy. Alcohol intoxication (acute and chronic) predisposes to rhabdomyolysis with the risk of acute renal failure. There are some hints that chronic alcoholism with myopathy increases the vulnerability of the kidney for further toxic agents. In rats glycerol induced renal failure is enhanced by alcohol pretreatment. Finally, regular alcohol consumption raises the blood pressure, which per se is a risk factor for renal damage.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Research in experimental medicine 189 (1989), S. 339-345 
    ISSN: 1433-8580
    Keywords: Chronic renal failure ; Catabolism ; Corticosterone ; RU 38 486 ; Nt-methylhistidine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Patients with chronic renal failure are prone to develop negative nitrogen balance resulting clinically in wasting and malnutrition. To study the role of glucocorticoids in the pathogenesis of uremic catabolism, we determined urinary excretion rates of urea and Nt-methylhistidine in chronically uremic rats with and without RU 38 486, a potent antiglucocorticoid. In comparison to pair-fed non-uremic animals, chronically uremic rats displayed significantly enhanced ureagenesis, as demonstrated by increased urinary urea excretion, and myofibrillar protein breakdown, as indicated by increased excretion rates of urinary Nt-methylhistidine. The administration of RU 38486 to chronically uremic rats, however, did not result in a normalization of urinary excretion of Nt-methylhistidine. Similarily, the antiglucocorticoid did not influence the extent of ureagenesis in our uremic animals, as it was demonstrated by comparable levels of urinary urea excretion. This suggests that glucocorticoids are not involved in the pathogenesis of enhanced catabolism in chronic renal insufficiency.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 20 (1985), S. 407-416 
    ISSN: 1612-1112
    Keywords: Gas chromatography-mass spectrometry ; Size exclusion chromatography ; Crude oil analysis ; Biodegradation ; Biological markers ; C- and H-isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Microorganisms have been isolated from a biodegraded crude oil from the Gifhorn trough, Lower Saxony. A non-degraded crude oil, related to the same source rock as the biodegraded one, was inoculated with the microorganisms found and the course of biodegradation thus initiated was followed by gas and liquid chromatographic techniques. The influence of biodegradation on commonly used oil-to-oil correlation parameters was investigated in detail.
    Type of Medium: Electronic Resource
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