title: [Comparison of blood levels, excretion and metabolite pattern in rats non-pretreated and pretreated with subacute doses of AR-L 115 BS].
abstract: Following p.o. administration of 50 mg/kg 2-[(2-methoxy-4-methylsulfinyl)phenyl]-1H-imidazo[4,5-b]pyridine (AR-L 115 BS) labelled with 14C the pharmacokinetics and metabolic pattern were studied in rats. The animals were divided into two groups: one group was non-pretreated and the other group was pretreated with non-radioactive AR-L 115 BS during a subacute toxicity test for 3 months. In all measurements statistically significant differences were detected. In pretreated rats blood levels and urine excretion balance were lower than in the control animals. In contrast to these findings a faster and higher faecal excretion was found in the pretreated animals. The metabolic pattern of plasma and urine shows a higher degree of metabolism in pretreated animals than in control animals. It is therefore concluded that the differences observed are caused by induction of the drug metabolizing enzyme systems.
mesh_terms: D000818:Animals; D001711:Biotransformation; D002316:Cardiotonic Agents / Q000097:blood / Q000378:metabolism*; D005243:Feces / Q000032:analysis; D007093:Imidazoles / Q000097:blood / Q000378:metabolism*; D008297:Male; D051381:Rats; D013997:Time Factors
chemical_list: D002316:Cardiotonic Agents; D007093:Imidazoles; C029758:sulmazole
vernacular_title: Vergleich des Blutspiegels, der Ausscheidung und der Metabolitenmuster von unvorbehandelten und subakut vorbehandelten Ratten nach Gabe von AR-L 115 BS.