title: Pharmacokinetics of ambenonium, a reversible cholinesterase inhibitor, in rats.
abstract: The pharmacokinetics of ambenonium, a reversible cholinesterase inhibitor, in rats was investigated following intravenous administration of the drug. Mean residence time and steady state volume of distribution were 23-36 min and 0.20-0.311 kg-1, respectively, and were dose independent at the dose of 0.3-3 mumole kg-1. Total body clearance of 8.2 ml min-1 kg-1 over 0.3 mumole kg-1 was slightly increased to 11.3 ml min-1 kg-1 at 3 mumole kg-1. Renal clearance was also increased with the increase of the dose, while hepatobiliary clearance was substantially constant. Ambenonium was highly concentrated in the liver, kidney, spleen, and lung. About 30 per cent of the dose is concentrically stored in the liver at 6 h after administration, and had not disappeared after 24 h.
authors.affiliation: Department of Pharmacy, University of Tokyo Hospital, Faculty of Medicine, University of Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Y
authors.initials: Y
authors.lastname: Kohda
authors.forename: Y
authors.initials: Y
authors.lastname: Sawada
authors.forename: T
authors.initials: T
authors.lastname: Iga
mesh_terms: D000549:Ambenonium Chloride / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D000818:Animals; D001659:Biliary Tract / Q000378:metabolism; D002800:Cholinesterase Inhibitors / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D007275:Injections, Intravenous; D007668:Kidney / Q000378:metabolism; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D014018:Tissue Distribution
chemical_list: D002800:Cholinesterase Inhibitors; D000549:Ambenonium Chloride