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Related Experiment Videos

Recent developments in methanol toxicity

M A Medinsky1, D C Dorman

  • 1Chemical Industry Institute of Toxicology, Research Triangle Park, NC 27709-1237, USA.

Toxicology Letters
|December 1, 1995
PubMed
Summary
This summary is machine-generated.

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Rodents rapidly detoxify formate, unlike primates. Human exposure to low methanol levels results in formate concentrations below endogenous levels, suggesting minimal neurotoxic risk.

Area of Science:

  • Toxicology
  • Metabolism
  • Environmental Health

Background:

  • Methanol exposure can lead to toxic metabolite formate accumulation.
  • Rodents detoxify formate faster than primates due to higher hepatic tetrahydrofolate (THF) levels.
  • Assessing human risk from low-level methanol exposure requires understanding formate detoxification capacity.

Purpose of the Study:

  • To evaluate the disposition of methanol and its metabolite formate in humans and primates.
  • To determine if low-level methanol exposure poses a neurotoxic risk to humans.
  • To compare formate detoxification rates across species.

Main Methods:

  • Studied methanol and [14C]methanol disposition in humans, non-human primates, and rodents.
  • Measured blood formate concentrations after controlled methanol exposure (inhalation and oral).

Related Experiment Videos

  • Correlated hepatic tetrahydrofolate (THF) levels with species sensitivity to methanol toxicity.

    • Main Results:

    • Rodents showed more rapid formate detoxification than primates.
    • Human volunteers exposed to low methanol levels had blood formate below endogenous concentrations.
    • Non-human primates exposed to higher methanol levels also maintained formate below endogenous levels.

    Conclusions:

    • Species with high hepatic THF levels exhibit greater resistance to methanol neurotoxicity.
    • Low-level methanol exposure in humans does not significantly increase blood formate levels.
    • Human populations are likely not at increased risk of neurotoxic effects from low methanol exposure.