Measurement of Low-Molecular Weight Antioxidants, Uric Acid, Tyrosine and Tryptophan in Plaques and White Matter from Patients with Multiple SclerosisLangemann H.a · Kabiersch A.a · Newcombe J.b
aSection of Neurobiology, Department of Research, Cantonal Hospital Basel, Switzerland; bThe Multiple Sclerosis Society Laboratory, Department of Neurochemistry, Institute of Neurology, London, UK
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The levels of the antioxidants ascorbic acid, cysteine, reduced glutathione and a-tocopherol, of the free-radical marker uric acid and of the amino acids tyrosine and tryptophan were measured by means of high-pressure liquid chromatography in plaques, adjacent white matter and distant white matter from patients with multiple sclerosis, and in central nervous system tissue from patients without neurological diseases. Cholesterol and DNA were also determined, to check demyelination and cellularity. Uric acid was increased and glutathione correspondingly decreased in plaques; α-tocopherol was lowest in plaques and highest in distant white matter in all cases. Ascorbic acid, cysteine, tyrosine and tryptophan were not significantly changed in any tissue. The results provide evidence supporting the involvement of free radicals in multiple sclerosis.
© 1992 S. Karger AG, Basel
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