Assessment of a human recombinant manganese superoxide dismutase in models of inflammation.
Free Radic Res Commun
; 18(5): 291-8, 1993.
Article
em En
| MEDLINE
| ID: mdl-8370552
ABSTRACT
We evaluated a novel human recombinant preparation of manganese superoxide dismutase (MnSOD) for anti-inflammatory and anti-oxidant activity compared with a copper zinc (CuZn) SOD preparation. The results showed that administration of MnSOD (50, 100 and 200 micrograms kg-1) in the Freund's Complete Adjuvant (FCA) mediated paw oedema model suppressed the inflammation at 4 hours by 43, 25 and 43% (P < 0.001, P < 0.01 and P < 0.001 at respective doses). However, 24 hours post-challenge, MnSOD (50 and 100 micrograms kg-1), suppressed the inflammation by 19% (P < 0.001). In contrast, Mn SOD at higher doses (400-800 micrograms kg-1; 2 mgkg-1) exacerbated the inflammatory response at 4 hours. This pro-inflammatory response declined progressively by 24 hours. Furthermore, CuZn SOD produced no significant effects on the inflammatory response. In the carrageenan-induced synovitis model, Mn SOD (25 and 50 micrograms; intra-articular administration) exacerbated the inflammation at 48 hours. In contrast, Mn SOD at 5 micrograms produced a significant suppression (44%, P < 0.05) in knee joint swelling at 24 hours. The CuZn SOD preparation produced marked pro-inflammatory effects in the joints whilst it lacked activity in the FCA-mediated paw oedema model. These findings support a therapeutic potential of MnSOD in inflammatory disorders, however the compound has a complex pharmaco-dynamic profile.
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Base de dados:
MEDLINE
Assunto principal:
Superóxido Dismutase
/
Inflamação
/
Manganês
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Idioma:
En
Revista:
Free Radic Res Commun
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Reino Unido