Anti-inflammatory effect of a human prothrombin fragment-2-derived peptide, NSA9, in EOC2 microglia.
Biochem Biophys Res Commun
; 368(3): 779-85, 2008 Apr 11.
Article
en En
| MEDLINE
| ID: mdl-18261978
ABSTRACT
Pro-inflammatory mediators, such as nitric oxide (NO), prostaglandin E(2) (PGE(2)), and several cytokines (tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, and IL-6) are responsible for central nervous system (CNS) injuries that include ischemia, Alzheimer's disease, and neural death. Inhibition of these pro-inflammatory mediators would be an effective therapy to reduce the progression of neurodegenerative diseases. In this study, we examined the anti-inflammatory effects of a human prothrombin fragment-2-derived peptide, NSA9 (NSAVQLVEN), on the production of pro-inflammatory mediators in lipopolysaccharide (LPS)-activated brain microglia. NSA9 significantly inhibited the release of NO, PGE(2), and pro-inflammatory cytokines in a dose-dependent manner. Furthermore, NSA9 reduced the expression of inducible NO synthase (iNOS) and cyclooxygenase (COX)-2 mRNA and protein, which control the production of NO and PGE(2), respectively. Moreover, NSA9 suppressed the LPS-induced nuclear translocation and activation of nuclear factor-kappaB (NF-kappaB). These results suggest that NSA9 strongly inhibits the pro-inflammatory responses of microglia through the modulation of NF-kappaB activity.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fragmentos de Péptidos
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Protrombina
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Transducción de Señal
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Microglía
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Mediadores de Inflamación
Límite:
Humans
Idioma:
En
Año:
2008
Tipo del documento:
Article