Data di Pubblicazione:
1993
Citazione:
Pharmacodynamics and pharmacokinetics of eptastigmine in elderly subjects / A. Auteri, A. Mosca, N. Lattuada, M. Luzzana, L. Zecca, D. Radice, B. P. Imbimbo. - In: EUROPEAN JOURNAL OF CLINICAL PHARMACOLOGY. - ISSN 0031-6970. - 45:4(1993), pp. 373-6-376.
Abstract:
Eptastigmine is a new cholinesterase inhibitor, which may be potentially useful for the symptomatic treatment of Alzheimer's disease. A preliminary evaluation of its pharmacodynamic and pharmacokinetic profiles in the elderly has now been made in 6 healthy subjects (63-84 years of age) given 30 mg eptastigmine as a single oral dose. Blood was collected prior to and 1, 2, 3, 4, 6, 8, and 12 h after eptastigmine administration for measurement of cholinesterase inhibition in plasma and red blood cells and the plasma drug concentrations. The maximum plasma cholinesterase inhibition was 17%, which was reached 2.7 h after treatment. In red cells the maximum inhibition of the enzyme was 29% after 3.8 h. The estimated half-time of cholinesterase recovery was 12.4 h in plasma and 13.6 h in red blood cells. The peak plasma concentration of eptastigmine of 0.86 ng.ml-1 was reached after 1.4 h. Following absorption the drug was rapidly distributed into tissues (t1/2 alpha = 0.44 h) and then eliminated with a half-life of 12.1 h. The drug was well tolerated in all but one subject, who showed bradycardia with hypertension and nausea for about 2 h after the dose. The results indicate that oral administration of eptastigmine to elderly subjects produces long lasting inhibition of cholinesterase activity in plasma and in red blood cells.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
adverse effects; Cholinesterase inhibition; Elderly subjects; Eptastigmine; pharmacokinetics
Elenco autori:
A. Auteri, A. Mosca, N. Lattuada, M. Luzzana, L. Zecca, D. Radice, B. P. Imbimbo
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