Nitric oxide-induced immune switching in experimental inflammatory autoimmune diseases
Immune Network
;
: 116-125, 2001.
Artigo
em Coreano
| WPRIM
| ID: wpr-223975
ABSTRACT
BACKGROUND:
Nitric oxide (NO) production has been described as a double-edged sword eliciting both pro-and anti-inflammatory effect s in different immune reactions. This work was undertaken to investigate the immunoregulatory role of NO in experimental allergic encephalomyelitis (EAE) and experimental allergic uveitis (EAU). MEHHOD We examined whether molsidomine (MSDM), a NO donor, administration to the myelin basic protein (MBP)-or interphotoreceptor retinoid binding protein (IRBP)-immunized rat s could suppress EAE development by shifting toward the Th2 cytokine response. In the EAE experiment s, the rat s were treated orally with MSDM (10 mg/kg/day) at the early stage (-1-4 days) or throughout the experimental period (-1-15 days).RESULTS:
This resulted in significant amelioration of the disease and mild clinical symptoms, while MBP-immunization without MSDM administration showed severe EAE development . A marked reduction in inflammation was also observed in the spinal cord, indicating the crucial role of NO in the pathogenesis of EAE in in vivo. In the EAU experiments, a 24 h pre-treatment with MSDM prior to IRBP immunization resulted in significant inhibition of the disease. Furthermore, MSDM administration for 2 1 days completely reduced the incidence and severity of EAU. To investigate whether MSDM could modulate cytokine switching from Th 1 to Th2, culture supernatants of MBP-or IRBP-stimulated inguinal lymphocytes were analyzed. MSDM treatment enhanced IL-10 secretion but decreased IFN-gamma. IL-4 was undetectable in all groups. In contrast, the MBP-or IRBP-immunized rat s without MSDM secreted high concentrations of IFN-gamma, but low concentrations of IL-10.CONCLUSION:
In conclusion, NO administation suppresses EAE and EAU by modulating the Th 1/Th2 balance during inflammatory immune responses. This work further suggest s that NO may be useful in the therapeutic control of autoimmune disease.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Doenças Autoimunes
/
Medula Espinal
/
Doadores de Tecidos
/
Uveíte
/
Molsidomina
/
Linfócitos
/
Proteínas de Transporte
/
Incidência
/
Interleucina-4
/
Imunização
Tipo de estudo:
Estudo de incidência
/
Estudo prognóstico
Limite:
Animais
/
Humanos
Idioma:
Coreano
Revista:
Immune Network
Ano de publicação:
2001
Tipo de documento:
Artigo
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