Effect of supersaturated oxygen emulsion treatment on chloropicrin-induced chemical injury in ex vivo rabbit cornea.
Toxicol Lett
; 349: 124-133, 2021 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-34153409
ABSTRACT
With a possibility for the use of chemical weapons in battlefield or in terrorist activities, effective therapies against the devastating ocular injuries, from their exposure, are needed. Oxygen plays a vital role in ocular tissue preservation and wound repair. We tested the efficacy of supersaturated oxygen emulsion (SSOE) in reducing ex vivo corneal and keratocyte injury from chloropicrin (CP). CP, currently used as a pesticide, is a chemical threat agent like the vesicating mustard agents and causes severe corneal injury. Since our previous study in human corneal epithelial cells showed the treatment potential of SSOE (55 %), we further tested its efficacy in an ex vivo CP-induced rabbit corneal injury model. Corneas were exposed to CP (700 nmol) for 2 h, washed and cultured with or without SSOE for 24 h or 96 h. At 96 h post CP exposure, SSOE treatment presented a healing tendency of the corneal epithelial layer, and abrogated the CP-induced epithelial apoptotic cell death. SSOE treatment also reduced the CP induced DNA damage (H2A.X phosphorylation) and inflammatory markers (e.g. MMP9, IL-21, MIP-1ß, TNFα). Further examination of the treatment efficacy of SSOE alone or in combination with other therapies in in vivo cornea injury models for CP and vesicants, is warranted.
Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Oxigênio
/
Queimaduras Químicas
/
Queimaduras Oculares
/
Córnea
/
Hidrocarbonetos Clorados
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
En
Revista:
Toxicol Lett
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos