Biomaterial Database

Effect of pentobarbital on the disposition of alprenolol. 1977

G Alván, and K Piafsky, and M Lind, and C von Bahr

Alprenolol was administered orally and intravenously to 5 healthy subjects before and after 10 to 14 daily doses of 0.1 gm pentobarbital. The area under the plasma concentration time curve after an oral 200-mg dose decreased from 706 +/- 277 to 154 +/- 48 ng/ml-hr (mean and SD) with the barbiturate treatment, but there was no significant change in elimination rate. The change in area corresponded to an increase in extraction by the liver from 0.72 +/- 0.13 to 0.93 +/- 0.01. The disposition of a 5.0-mg intravenous dose of alprenolol did not change significantly after pentobarbital treatment. There was no indication of a marked change in hepatic blood flow estimated from the clearance of alprenolol after intravenous administration. It is concluded that pentobarbital administration induces the metabolism of alprenolol in man and that the pharmacokinetic theories derived for hepatic extraction of drugs subject to a high metabolic clearance can be successfully applied.

UI	MeSH Term	Description	Entries
D007263	Infusions, Parenteral	The administration of liquid medication, nutrient, or other fluid through some other route than the alimentary canal, usually over minutes or hours, either by gravity flow or often by infusion pumping.	Intra-Abdominal Infusions,Intraperitoneal Infusions,Parenteral Infusions,Peritoneal Infusions,Infusion, Intra-Abdominal,Infusion, Intraperitoneal,Infusion, Parenteral,Infusion, Peritoneal,Infusions, Intra-Abdominal,Infusions, Intraperitoneal,Infusions, Peritoneal,Intra Abdominal Infusions,Intra-Abdominal Infusion,Intraperitoneal Infusion,Parenteral Infusion,Peritoneal Infusion
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008102	Liver Circulation	The circulation of BLOOD through the LIVER.	Hepatic Circulation,Circulation, Liver,Circulation, Hepatic
D008297	Male		Males
D010424	Pentobarbital	A short-acting barbiturate that is effective as a sedative and hypnotic (but not as an anti-anxiety) agent and is usually given orally. It is prescribed more frequently for sleep induction than for sedation but, like similar agents, may lose its effectiveness by the second week of continued administration. (From AMA Drug Evaluations Annual, 1994, p236)	Mebubarbital,Mebumal,Diabutal,Etaminal,Ethaminal,Nembutal,Pentobarbital Sodium,Pentobarbital, Monosodium Salt,Pentobarbitone,Sagatal,Monosodium Salt Pentobarbital
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284	Administration, Oral	The giving of drugs, chemicals, or other substances by mouth.	Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000526	Alprenolol	One of the ADRENERGIC BETA-ANTAGONISTS used as an antihypertensive, anti-anginal, and anti-arrhythmic agent.	1-(o-Allylphenoxy)-3-(isopropylamino)-2-propanol,Alfeprol,Alpheprol,Alprenolol Hydrochloride,Aptin,Aptin-Duriles,Aptina,Aptine,H-56-28,Aptin Duriles,AptinDuriles,H 56 28,H5628