Protection of myelin basic protein immunized mice from free-radical mediated inflammatory cell invasion of the central nervous system by the natural peroxynitrite scavenger uric acid.
Neurosci Lett
; 292(2): 137-41, 2000 Oct 06.
Article
em En
| MEDLINE
| ID: mdl-10998568
ABSTRACT
Peroxynitrite (ONOO(-)), the product of nitric oxide (NO(radical)) and superoxide (O(2)(-radical)), is believed to be a major contributor to immunotoxicity when produced by activated cells expressing inducible nitric oxide synthase (iNOS). Uric acid (UA) is a natural scavenger of ONOO(-) that is present at high levels in the sera of humans and other higher order primates relative to most lower mammals. We have previously shown that UA treatment is therapeutic in experimental allergic encephalomyelitis (EAE), a rodent model of multiple sclerosis (MS). In this study we have examined the effect of UA therapy on the dynamics of the appearance of iNOS-positive cells in central nervous system (CNS) tissue of mice subjected to the stimuli that cause EAE. The results indicate that UA prevents activated monocytes from entering CNS tissue where they may contribute to the pathogenesis of MS and other CNS diseases.
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Base de dados:
MEDLINE
Assunto principal:
Ácido Úrico
/
Monócitos
/
Proteína Básica da Mielina
/
Encefalomielite Autoimune Experimental
Limite:
Animals
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article