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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Research in experimental medicine 172 (1978), S. 223-229 
    ISSN: 1433-8580
    Keywords: Lung metabolism ; Surfactant ; Adult respiratory distress-syndrome ; Sepsis ; Peritonitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pulmonary alterations after shock and sepsis, described clinically as shock lung or adult respiratory distress syndrome, are of great importance in intensive care. Pathogenetically an alteration of the surfactant system of the lung is often discussed. Since phospholipids are constituents of lung surfactants, phospholipid metabolism is investigated in experimental peritonitis in rats in our laboratory. 15 hours after inducing a peritonitis, the lung incorporates more oleic acid than that in animals of the reference group. 33 hours after inducing peritonitis, the capacity of the lung to incorporate choline and fatty acids is markedly reduced, histologically the lungs represent morphological equivalents of the so-called shock lung at this time. Therefore we conclude, that an alteration of phospholipid metabolism with a diminished and/or altered synthesis of lung surfactant plays, at least in part, an important role in the pathogenesis of respiratory distress in sepsis and peritonitis.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0738
    Keywords: Bromcarbamides ; Barbiturates ; Diazepam ; Lung metabolism ; Phospholipids ; Surfactant system ; Respiratory distress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Schwere, meist suicidale, Intoxikationen mit Bromcarbamiden zeigen häufig respiratorische Komplikationen. Zur Beantwortung der Frage, ob die Pharmaka einen direkten Effekt auf das Lungengewebe ausüben, untersuchten wir die Inkorporation radioaktiv markierten Cholins und radioaktiv markierter Palmitinsäure ins Lungenlecithin. Der Phospholipidmetabolismus steht in enger Relation zum Surfactant-System der Lunge. Außerdem verglichen wir den Einfluß vom Bromcarbamiden mit anderen Sedativa. Bei allen mit Pharmaka behandelten Tieren war eine Reduktion der Palmitatinkorporation z. T. bis auf 40% zu verzeichnen, während die Inkorporation von Cholin unter Bromcarbamiden sogar zunahm. Das zahlenmäßige Verhältnis zwischen Palmitat- und Cholininkorporation war in der Kontrollgruppe 6.77 und nahm auf 2–3 in der Bromcarbamidgruppe ab. Der Gesamtphospholipidgehalt der Lunge/g Feuchtgewicht blieb während der Experimente unverändert. Aus diesen Untersuchungen wird geschlossen, daß Sedativa, aber besonders Bromcarbamide, den Fettsäureaustausch am Lecithinmolekül der Lunge vermindern. Dieses könnte zu einer Bildung nicht oberflächenaktiven Lecithins fuhren. Die klinischen und morphologischen Aspekte der schweren Bromcarbamidintoxikation sind vereinbar mit einer Störung der Oberflächenfunktion in der Lunge.
    Notes: Abstract Severe intoxications with bromcarbamides often show respiratory complications. To answer the question if there is a direct effect of the drug on lung tissue we investigated the incorporation of radioactive labelled choline and palmitate into lung lecithin. The phospholipid metabolism is in close relation to the surfactant system of the lung. Secondly we compared the influence of bromcarbamides with other hypnotic drugs. In all animals of our experiments there was a reduction of palmitate incorporation into lung lecithin down to 40%, whereas the incorporation of choline increases in bromcarbamide-intoxication. The relation between palmitate and choline incorporation was 6.77 in the controls and it decreases to 2–3 in the bromcarbamide group. The total phospholipid content in the lung/g wet weight remained unchanged in all experiments. From this data we conclude, that under these drugs, most pronounced under bromcarbamides, there is a reduction of fatty acid exchange of the lecithin molecules of the lung. This might lead to the production of non surface active lecithin. The clinical and the morphological aspects of severe bromcarbamide intoxication are consistent with a perturbation of the surfactant function.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1912
    Keywords: Lung metabolism ; Surfactant system of the lung ; Phospholipids ; Phospholipidosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The incorporation of lauric acid, palmitic acid and oleic acid into phospholipids of lung and liver has been studied in tissue slices of control rabbits and of rabbits treated with bromhexine or ambroxol in doses of 10 mg/kg. A marked increase (up to 200% of the controls) of palmitic acid incorporation into phosphatidylcholine (lecithin) and phosphatidyl-ethanolamine of the lung was found whereas the incorporation rate of palmitic acid into lecithin and phosphatidylethanolamine of the liver displayed no significant change. The incorporation of lauric acid and oleic acid into lung phospholipids was not accelerated. The observed effects were more marked in short time experiments (analysis 2 h after drug injection) than after treatments for 7 days. It is concluded that the phospholipid synthesis is stimulated by the drugs especially in the lungs. This seems to be of particular interest with respect to the surfactant system of the lung and might have some therapeutic relevance.
    Type of Medium: Electronic Resource
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