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Effects of acetamide on experimentally-induced Palicourea marcgravii (St Hill) poisoning in rats
S L Gorniak1, J Palermo-Neto, H S Spinosa
1Department of Pathology, Faculty of Veterinary Medicine, University of Sao Paulo, Brazil.
Abstract:
High indices of mortality in cattle have been reported in Brazil as a consequence of Palicourea marcgravii (Pm) acute intoxications. It has been established that Pm leaves contain monofluoroacetic acid (MFA), the active toxic principle of the plant. Rational therapy for MFA poisoning involves the use of a substance that might prevent fluorocitric acid formation. The present work was undertaken to verify if acetamide, a MFA antidote and an acetate donor, protects rats against both Pm and MFA intoxications. It was verified that acetamide protected rats from both convulsions and death. Future experiments should be carried out on cattle to examine the efficiency of acetamide, and particularly under field conditions.
Insights
Acetamide may protect cattle from Palicourea marcgravii poisoning. This study found acetamide protected rats from intoxication by the plant and its toxic principle, monofluoroacetic acid (MFA). Further research in cattle is warranted.
Area of Science:
- Veterinary Toxicology
- Plant Poisoning
- Pharmacology
Background:
- Palicourea marcgravii (Pm) causes significant cattle mortality in Brazil.
- The plant's toxicity is attributed to monofluoroacetic acid (MFA), a potent toxin.
- Preventing fluorocitrate formation is key to treating MFA poisoning.
Purpose of the Study:
- To evaluate acetamide as a potential antidote for Palicourea marcgravii and MFA intoxication.
- To determine if acetamide can prevent the toxic effects of MFA.
Main Methods:
- Rats were used as a model organism to test the efficacy of acetamide.
- Animals were exposed to both Palicourea marcgravii and isolated monofluoroacetic acid.
- The protective effects of acetamide against intoxication symptoms and mortality were assessed.
Main Results:
- Acetamide demonstrated a protective effect in rats against both Palicourea marcgravii and MFA intoxication.
- Acetamide successfully prevented convulsions and death in the intoxicated rats.
- The findings support acetamide's role as an antidote by potentially inhibiting fluorocitric acid formation.
Conclusions:
- Acetamide shows promise as a treatment for Palicourea marcgravii and MFA poisoning in rats.
- Further investigation is recommended to assess acetamide's efficacy in cattle, particularly under field conditions.
- This research opens avenues for developing effective therapeutic strategies against fluoroacetate poisoning in livestock.