Enhanced expression of constitutive and inducible forms of nitric oxide synthase in autoimmune encephalomyelitis
Journal of Veterinary Science
; : 11-17, 2000.
Article
em En
| WPRIM
| ID: wpr-103276
Biblioteca responsável:
WPRO
ABSTRACT
To elucidate the role of nitric oxide synthase (NOS) in the pathogenesis of experimental autoimmune encephalomyelitis (EAE), we analyzed the expression of constitutive neuronal NOS (nNOS), endothelial NOS (eNOS), and inducible NOS (iNOS) in the spinal cords of rats with EAE. We further examined the structural interaction between apoptotic cells and spinal cord cells including neurons and astrocytes, which are potent cell types of nitric oxide (NO) production in the brain. Western blot analysis showed that three forms of NOS significantly increased in the spinal cords of rats at the peak stage of EAE, while small amounts of these enzymes were identified in the spinal cords of rats without EAE. Immunohistochemical study showed that the expression of either nNOS or eNOS increased in the brain cells including neurons and astrocytes during the peak and recovery stages of EAE, while the expression of iNOS was found mainly in the inflammatory macrophages in the perivascular EAE lesions. Double labeling showed that apoptotic cells had intimate contacts with either neurons or astrocytes, which are major cell types to express nNOS and eNOS constitutively. Our results suggest that the three NOS may play an important role in the recovery of EAE.
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Índice:
WPRIM
Assunto principal:
Ratos Endogâmicos Lew
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Medula Espinal
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Endotélio Vascular
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Imuno-Histoquímica
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Apoptose
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Óxido Nítrico Sintase
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Marcação In Situ das Extremidades Cortadas
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Encefalomielite Autoimune Experimental
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Óxido Nítrico Sintase Tipo I
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Óxido Nítrico Sintase Tipo II
Limite:
Animals
Idioma:
En
Revista:
Journal of Veterinary Science
Ano de publicação:
2000
Tipo de documento:
Article