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Related Concept Videos

Toxicity Testing in Animals01:23

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Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
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Toxidromes are specific patterns of symptoms resulting from toxic substance exposure. They help in the identification and treatment of poisoning. The symptoms of each toxidrome group indicate poisoning by a certain class of chemicals or drugs.1. Sympathomimetic: Stimulates the sympathetic nervous system. Symptoms include agitation, increased heart rate (HR), blood pressure (BP), respiratory rate (RR), temperature, and pupil size. Drugs like cocaine and amphetamines, along with tremors and...
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[Doramectin intoxication in 3 kittens].

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Doramectin toxicity in kittens can cause severe neurological symptoms, including seizures and coma. Careful dosage is crucial, as high levels may lead to fatal outcomes despite treatment.

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Area of Science:

  • Veterinary Neurology
  • Toxicology
  • Small Animal Medicine

Background:

  • Adverse drug reactions in veterinary medicine require thorough documentation.
  • Macrocyclic lactones, like doramectin, are used for parasitic control in animals.
  • Kittens may be particularly susceptible to drug toxicities due to immature metabolic pathways.

Observation:

  • Three of seven kittens treated with doramectin exhibited neurological signs.
  • Symptoms ranged from mild tremors and apathy to severe seizures and coma.
  • One kitten experienced behavioral changes, including aggression and hyperesthesia.

Findings:

  • Neurological symptoms in kittens were associated with doramectin administration.
  • Histopathology of the deceased kitten's brain revealed cytotoxic edema and polioencephalomalacia.
  • The fatal case involved a doramectin dosage of 380 μg/kg.

Implications:

  • This case highlights the potential neurotoxicity of doramectin in young felines.
  • Accurate dosing and careful monitoring are essential when using doramectin in kittens.
  • Further research into doramectin pharmacokinetics and safety in kittens is warranted.