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1 Department of Pharmacology, University of Michigan, Ann Arbor, Michigan
1. Fluoroacetate, 4-fluorobutyrate and 6-fluorohexanoate cause the accumulation of citrate in the intact animal. 3-Fluoropropionate produces neither citrate nor symptoms of toxicity of fluoro-fatty acid poisoning in rats and dogs.
2. The development of signs and symptoms of fluoroacetate poisoning cannot be ascribed to the citrate which accumulates. The blockade of the tricarboxylic acid cycle, at least as reflected by the accumulation of citrate is, likewise, un-related to the development of symptoms of poisoning.
3. The factors of dosage and duration of poisoning with the fluoro-fatty acids are related to the accumulation of citrate.
4. Glycerol monoacetate (monoacetin) encourages the accumulation of citrate in brain while protecting against fluoroacetate poisoning in rats. It does not protect against 4-fluorobutyrate.
5. Glycerol monobutyrate (monobutyrin) antagonizes 4-fluorobutyrate, but not fluoroacetate, in rats.
Submitted on November 5, 1951