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Bleomycin-detectable iron in brain tissue.

J M Gutteridge1, W Cao, M Chevion

  • 1Molecular Toxicology Research Group, Oklahoma Medical Research Foundation, Oklahoma City 73104.

Free Radical Research Communications
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

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The normal brain has significant iron concentrations in a chelatable form. Ischemia and reperfusion did not alter these brain iron levels, likely due to high baseline iron and preparation methods.

Area of Science:

  • Neurochemistry
  • Biometals

Background:

  • The brain contains high concentrations of iron, crucial for various physiological processes.
  • A portion of this iron exists in a low molecular mass, chelatable form.

Purpose of the Study:

  • To quantify the levels of low molecular mass, chelatable iron in gerbil brains.
  • To investigate the impact of ischemia and reperfusion on these iron levels.

Main Methods:

  • Ultrafiltration of homogenized gerbil brains to isolate low molecular mass iron.
  • Quantification of iron using the bleomycin assay.
  • Measurement of iron in plasma for comparison.

Main Results:

  • Average concentration of bleomycin-detectable iron in normal gerbil brains was 20.5 +/- 3.5 microM.

Related Experiment Videos

  • No bleomycin-detectable iron was found in gerbil plasma.
  • Ischemia and reperfusion did not significantly alter brain tissue levels of bleomycin-detectable iron.

    • Conclusions:

    • Gerbil brains possess substantial amounts of chelatable iron.
    • Brain iron levels remained stable post-ischemia/reperfusion, possibly due to high basal iron content and preparation artifacts.