Abstract:
:The pharmacokinetics, safety, and tolerance of linopiridine ([3,3-bis(4-pyridinylmethyl)-1-phenylindolin-2-one]; DuP 996) a potential therapeutic agent for Alzheimer's disease, were assessed in double-blind, placebo-controlled, randomized studies in which single oral doses were given to 64 healthy young or elderly males. Young subjects received escalating doses of 0.5 to 55 mg, whereas elderly subjects were given doses of 20 to 45 mg. Linopirdine plasma and urine samples were quantified after liquid extraction by a specific HPLC method using UV detection. In both groups, linopirdine disposition was characterized by rapid absorption (mean Tmax, < 1 hr) and elimination (mean t1/2, 0.4-3.2 hr). Urinary excretion of unchanged drug was negligible. The pharmacokinetic parameters showed large inter- and intrasubject variability. Linopirdine was well-tolerated in both young and elderly volunteers. The most frequently reported adverse event was headache. The subjects who received linopirdine did not experience clinically important changes in vital signs, electrocardiograms (ECGs), electroencephalograms (EEGs), or clinical laboratory evaluations.
journal_name
J Clin Pharmacoljournal_title
Journal of clinical pharmacologyauthors
Pieniaszek HJ Jr,Fiske WD,Saxton TD,Kim YS,Garner DM,Xilinas M,Martz Rdoi
10.1002/j.1552-4604.1995.tb04741.xsubject
Has Abstractpub_date
1995-01-01 00:00:00pages
22-30issue
1eissn
0091-2700issn
1552-4604journal_volume
35pub_type
临床试验,杂志文章,随机对照试验abstract::Many biologically active synthetic drugs contain chiral centers, although they are used as racemic mixtures. Enantiomers are hard to distinguish in the chemical laboratory but are readily discriminated in the body and differ in their biological activities and disposition. The pharmacokinetic profiles of enantiomers ca...
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