Therapeutic intervention with chicken egg white ovomacroglobulin and a new quinolone on experimental Pseudomonas keratitis.
Graefes Arch Clin Exp Ophthalmol
; 232(8): 488-93, 1994 Aug.
Article
en En
| MEDLINE
| ID: mdl-7926884
ABSTRACT
BACKGROUND:
Chicken egg white ovomacroglobulin (ovoM) is a potent protease inhibitor with broad-spectrum activity against various proteases. The combined effects of ovoM and the new quinolone, ofloxacin (OFLX) on experimental Pseudomonas aeruginosa keratitis were investigated.METHODS:
The in vitro inhibitory effects of ovoM on protease activity in culture fluid of clinically isolated P. aeruginosa and on activity of human neutrophil elastase and cathepsin G were assayed using azo-casein as substrate. Albino rabbits received intrastromal injection of the isolated Pseudomonas strain (1 x 10(5) colony-forming units). At 16 h after inoculation, three treatment groups--0.1% ovoM alone, 0.3% OFLX alone, and a combination of both--and a non-treatment control group were tested.RESULTS:
Protease activity in the culture solution and human neutrophil elastase was inhibited by ovoM, whereas cathepsin G was not inhibited effectively. In vivo additive therapeutic effects of ovoM and OFLX were observed at 96 h (P < 0.05 compared with OFLX alone).CONCLUSION:
The results indicate that inhibition of proteolytic activity with ovoM is useful in preventing stromal degradation in P. aeruginosa keratitis.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Infecciones por Pseudomonas
/
Macroglobulinas
/
Proteínas Dietéticas del Huevo
/
Infecciones Bacterianas del Ojo
/
Queratitis
Límite:
Animals
Idioma:
En
Revista:
Graefes Arch Clin Exp Ophthalmol
Año:
1994
Tipo del documento:
Article
País de afiliación:
Japón