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Increase in the acute toxicity and brain concentrations of chlorophenoxyacetic acids by probenecid in rats
1Department of Pharmacology and Toxicology, University of Kuopio, Finland.
General Pharmacology
|January 1, 1990
Abstract:
1. Probenecid increased the acute toxicity of chlorophenoxyacetic acids (2,4-D, 2,4,5-T and MCPA) in rats. 2. Probenecid increased the brain to plasma ratios of all the three 14C-labelled chlorophenoxyacetic acids. The increase was due only partly to the displacement of chlorophenoxyacids from their binding sites in rat plasma proteins by probenecid. 3. Probenecid did not change significantly the intracerebral distribution pattern of 14C-labelled chlorophenoxyacetic acids.