The effect of subconjunctival bevacizumab on corneal neovascularization, inflammation and re-epithelization in a rabbit model
Clinics
;
66(8): 1443-1450, 2011. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-598402
ABSTRACT
PURPOSE:
To evaluate the use of subconjunctival bevacizumab on corneal neovascularization in an experimental rabbit model for its effect on vessel extension, inflammation, and corneal epithelialization.METHODS:
In this prospective, randomized, blinded, experimental study, 20 rabbits were submitted to a chemical trauma with sodium hydroxide and subsequently divided into two groups. The experimental group received a subconjunctival injection of bevacizumab (0.15 m; 3.75 mg), and the control group received an injection of 0.15 ml saline solution. After 14 days, two blinded digital photograph analyses were conducted to evaluate the inflammation/diameter of the vessels according to pre-established criteria. A histopathological analysis of the cornea evaluated the state of the epithelium and the number of polymorphonuclear cells.RESULTS:
A concordance analysis using Kappa's statistic showed a satisfactory level of agreement between the two blinded digital photography analyses. The neovascular vessel length was greater in the control group (p<0.01) than in the study group. However, the histopathological examination revealed no statistically significant differences between the groups in terms of the state of the epithelium and the number of polymorphonuclear cells.CONCLUSIONS:
Subconjunctival bevacizumab inhibited neovascularization in the rabbit cornea. However, this drug was not effective at reducing inflammation. The drug did not induce persistent corneal epithelial defects.
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Índice:
LILACS (Américas)
Asunto principal:
Endotelio Corneal
/
Neovascularización de la Córnea
/
Inhibidores de la Angiogénesis
/
Anticuerpos Monoclonales Humanizados
/
Inflamación
/
Queratitis
Tipo de estudio:
Estudio de etiología
/
Estudio observacional
/
Estudio pronóstico
/
Factores de riesgo
Límite:
Animales
Idioma:
Inglés
Revista:
Clinics
Asunto de la revista:
Medicina
Año:
2011
Tipo del documento:
Artículo
País de afiliación:
Brasil
/
Estados Unidos
Institución/País de afiliación:
Cole Eye Institute/US
/
Hospital de Olhos do Parana/BR
/
Universidade Federal do Paraná/BR
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