Inducible aldehyde dehydrogenases in the hepatic cytosol of the rat
Φόρτωση...
Ημερομηνία
Συγγραφείς
Torronen, R.
Nousiainen, U.
Marselos, M.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Acta Pharmacol Toxicol (Copenh)
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Rats of the Wistar/Af/Han/Mol/(Han 67) strain have previously been shown to respond in a variable way to phenobarbital treatment, as far as the induction of aldehyde dehydrogenase activity is concerned (Marselos 1976). This biochemical property is genetically determined and concerns the high-Km aldehyde dehydrogenase of the hepatic cytosol. In this study, administration of phenobarbital (1 mg/mo of drinking water, for 1 week) produces a uniform induction of aldehyde dehydrogenase in all rats, when measured with micromolar substrate concentration. The inducible low-Km enzyme of the cytosol is not genetically determined like the high-Km enzyme, and shows a wide specificity for aliphatic as well as for aromatic aldehydes. Despite the inducibility of the cytosolic enzymes, no alterations are found in the mitochondrial aldehyde dehydrogenase activities after phenobarbital treatment. The oxidation of D-glucuronolactone takes place only in the cytosol, and seems to be dependent on the low-Km aldehyde dehydrogenase. This is consistent with NMR studies, which showed that a very minimal amount of D-glucuronolactone is in aldehyde form under the measurement conditions usually applied. Further, the oxidation of D-glucuronolactone is also enhanced by phenobarbital in all rats without a genetic predisposition, and its dose-response curve is very similar to that of the low-Km aldehyde dehydrogenase.
Περιγραφή
Λέξεις-κλειδιά
Aldehyde Oxidoreductases/*metabolism, Animals, Cytosol/*enzymology, Enzyme Induction, Glucuronates/metabolism, Liver/*enzymology, Male, Mitochondria, Liver/enzymology, Phenobarbital/pharmacology, Rats, Rats, Inbred Strains
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/578655
http://onlinelibrary.wiley.com/store/10.1111/j.1600-0773.1977.tb02147.x/asset/j.1600-0773.1977.tb02147.x.pdf?v=1&t=h096h1dm&s=dfa079967fbb52729af896b104622c5dd6a5a152
http://onlinelibrary.wiley.com/store/10.1111/j.1600-0773.1977.tb02147.x/asset/j.1600-0773.1977.tb02147.x.pdf?v=1&t=h096h1dm&s=dfa079967fbb52729af896b104622c5dd6a5a152
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής