Gender difference regarding selenium penetration into the mouse brain.
Biol Trace Elem Res
; 89(1): 85-93, 2002 Oct.
Article
em En
| MEDLINE
| ID: mdl-12413054
ABSTRACT
A sex difference in the penetration of selenium into the brain was observed using lipopolysaccharide (LPS)-injected mice. The selenium concentration increased in the brains of sodium selenite-injected LPS-treated female mice, but not males. The selenium concentration peaked when selenite was injected 3 h after the injection of LPS into female mice. In addition, selenium in the brain increased when a dosage of 30 micromol/kg and more of selenite was injected into LPS-treated female mice. Also, the selenium concentration in the brain increased and peaked 2-3 h after selenite injection; 24 h later, the level was similar to the Se-only group. The penetration of selenium into the brain was inhibited by pretreatment with aminoguanidine, an inhibitor of nitric oxide synthetase. From the present results, selenium more easily penetrated into the brains of female mice compared to males after LPS treatment, and nitric oxide may have affected the penetration. However, the sex difference mechanism for selenium penetration needs further investigation.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Selênio
/
Encéfalo
Limite:
Animals
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article