“…Though reports by others concerning the possibility of ADH adaptation have been conflicting (17), our observation of a lack of ADH adaptation is in accord with several previous publications (18). Furthermore, whereas ADH is found in the cytosol (6), a number of ethanol effects involve the microsomes (17).…”
Hepatic microsomes contain an ethanol-oxidizing system distinct from alcohol dehydrogenase. In vitro, it has characteristics comparable to those of microsomal drug-detoxifying enzymes and, in vivo, it is capable of adaptation to the administration of ethanol. The existence of this microsomal ethanol-oxidizing system may explain ultrastructural, pharmacological, and biochemical effects of ethanol.
“…Though reports by others concerning the possibility of ADH adaptation have been conflicting (17), our observation of a lack of ADH adaptation is in accord with several previous publications (18). Furthermore, whereas ADH is found in the cytosol (6), a number of ethanol effects involve the microsomes (17).…”
Hepatic microsomes contain an ethanol-oxidizing system distinct from alcohol dehydrogenase. In vitro, it has characteristics comparable to those of microsomal drug-detoxifying enzymes and, in vivo, it is capable of adaptation to the administration of ethanol. The existence of this microsomal ethanol-oxidizing system may explain ultrastructural, pharmacological, and biochemical effects of ethanol.
“…Durch Nachchromatographie der 22,5 g Mischfraktion an der 50-fachen Menge Kieselgcl und Elution mit 5 : 7,5) (627,GO) Gef. ,,57,3 ,,5,5 ,,36,7 ,,…”
Section: )unclassified
“…Spaltversuche mit Enzymen, z. B. rnit Emulsin, Takadiastase und Pilzenzym C-1290 [5] verliefen negativ; einzig Schneckenferment (= Hepnto-Pankreas-Saft der Weinbergschnecke [6]) bewirkte eine, allerdings unvollstandige, Hydrolyse. Zur praparativen Gewinnung des Podorhizols erwies sich ein modifizierter Abbau des Glucosids nach BARRY [7] Aus der Konstitution der Spaltprodukte 3, 10 und 11 geht hervor, dass die Reaktion von Podorhizol-glucosid mit Sauren nach zwei Mechanismen ablauft : Das protonierte Glucosid kann entweder auf ubliche Weise zu Podorhizol und glucose hydrolysiert werden (Weg A) oder sich unter Austritt der Zuckerkomponente (Weg B) via ein Carbonium-Ion zu den Produkten 10 und 11 cyclisieren.…”
In fruheren Arbeiten uber wasserlosliche, mitosehemmende Inhaltsstoffe aus den Wurzeln von Podophyllurn ernodi WALL. und P. peltaturn L. berichteten wir uber die Isolierung der 4 Hauptglucoside : Podophyllotoxin-B-n-glucosid, 4'-Demethylpodophyllotoxin-~-~-glucosid, B-Peltatin-B-D-glucosid und cr-Peltatin-~-D-glucosid
“…Phillippe from southern Italy does not contain proscillaridin A and scillaren A. However, we isolated scilliroside and scillirubroside, which had been found earlier (3,4) as marker substances in the "red variety" of U maritima. For the first time, a glycoside of arenobufagine and a bufadienolide-contaming thevetose have been isolated and structurally eluci- The most complex bufadienolide pattern is shown by a white bulbous tetraploid sample from Egypt.…”
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