PMID: 488327Sep 1, 1979Paper

Pharmacokinetic characteristics of salicylates in old animals

Farmakologiia i toksikologiia
I S Bezverkhaia

Abstract

Experimental study of absorption, distribution, metabolism and excretion of salicylic acid and salicylate upon ageing showed that the sodium salicylate absorption rate is considerably decreased in old rats and rabbits. As a result, the plasma of old animals shows the low content of salicylates compared to adult ones. The level of salicylic acid in tissues and capacity of serum protein for salicylate binding are decreased. Excretion of salicylates in old rats was delayed compared to that in adult ones, the half-life in old rats was 2--3 times as long as that in adult species. The revealed features of salicylate pharmacokinetics in old animals confirm advisability of their further study in order to determine adequate doses of the drugs to be applied in geriatrics and to prevent their adverse on the ageing organism.

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