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Evaluation of the safety of intracameral trypan blue injection on corneal tissue using oxidative stress parameters and apoptotic activity: an experimental study / Avaliação da segurança de injeção de azul de tripan intracameral no tecido da córnea utilizando parâmetros de estresse oxidativo e atividade apoptótica: um estudo experimental
Akal, Ali; Ulas, Turgay; Goncu, Tugba; Adibelli, Mehmet Fatih; Kocarslan, Sezen; Guldur, Muhammet Emin; Guler, Muslum; Ozkan, Ufuk; Dusunur, Mehmet; Demir, Tuncer.
  • Akal, Ali; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Ulas, Turgay; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Goncu, Tugba; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Adibelli, Mehmet Fatih; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Kocarslan, Sezen; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Guldur, Muhammet Emin; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Guler, Muslum; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Ozkan, Ufuk; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Dusunur, Mehmet; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
  • Demir, Tuncer; Harran University. Faculty of Medicine. Department of Ophthalmology. Sanliurfa. TR
Arq. bras. oftalmol ; 77(6): 388-391, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-735801
ABSTRACT

Purpose:

The present experimental study aimed to investigate the effects of intracameral trypan blue (TB) on oxidative stress parameters and apoptosis in corneal tissue.

Methods:

Thirty rats were randomly assigned to three groups of 10 rats each the sham group (Group 1); control group (Group 2); and treatment group (Group 3). The control group was administered 0.01 cc of balanced salt solution. The treatment group was administered 0.006 mg/0.01 cc of TB. The total antioxidant status (TAS) and total oxidant status (TOS) in corneal tissue and blood were measured and the oxidative stress index (OSI) was calculated. Finally, corneal tissue histopathology was evaluated using staining for caspase-3 and -8, and apoptotic activity was examined.

Results:

The TAS, TOS and OSI levels in the blood samples were not significantly different (p>0.05 for all). Compared with the sham and control groups, the TOS and OSI levels in corneal tissue were significantly different in the treatment group (p<0.05 for all). No significant difference was observed between the sham group and the control group (p>0.05). Immunohistochemical staining for caspase-3 and caspase-8 demonstrated higher apoptotic activity in the TB group than in the sham and control groups.

Conclusion:

The present study showed that intracameral TB injection is safe systematically but may be toxic to corneal tissue, as demonstrated using oxidative stress parameters and histopathological evaluation. .
RESUMO

Objetivo:

Este estudo experimental tem como objetivo investigar os efeitos do azul de tripan intracameral (TB) sobre parâmetros de estresse oxidativo e apoptose no tecido da córnea.

Métodos:

Trinta ratos foram divididos aleatoriamente em três grupos de 10 animais cada grupo simulação (Grupo 1); grupo controle (Grupo 2); e grupo tratamento (Grupo 3). No grupo controle foi administrado 0,01 cc de solução salina balanceada (BSS). No grupo tratamento foi administrado 0,006 mg/0,01 cm de TB. O estado antioxidante total ( TAS) e estado oxidante total ( TOS) no tecido da córnea e sangue foram medidos e o índice de estresse oxidativo (OSI) foi calculado. Finalmente, histopatologia do tecido da córnea foi avaliada por meio da coloração para caspase-3 e -8; atividade apoptótica também foi examinada.

Resultados:

Os níveis de TAS, TOS e OSI das amostras de sangue não foram significativamente diferentes (p>0,05 para todos). Em comparação com os grupos simulação e controle, os níveis de TOS e OSI no tecido da córnea foram significativamente diferentes no grupo tratamento (p<0,05 para todos). Não houve diferença significativa entre o grupo simulção e o grupo controle (p>0,05). A coloração imuno-histoquímica com a caspase-3 e caspase-8 demonstrou maior atividade apoptótica no grupo tratamento do que nos grupos controle e simulação.

Conclusão:

Este estudo mostrou que a injeção intracameral TB é segura sistematicamente, mas pode ser tóxica ao tecido da córnea, como demonstrado através de parâmetros de estresse oxidativo e avaliação histopatológica. .
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Trypan Blue / Apoptosis / Oxidative Stress / Cornea / Coloring Agents Limits: Animals Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2014 Type: Article Affiliation country: Turkey Institution/Affiliation country: Harran University/TR

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Full text: Available Index: LILACS (Americas) Main subject: Trypan Blue / Apoptosis / Oxidative Stress / Cornea / Coloring Agents Limits: Animals Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2014 Type: Article Affiliation country: Turkey Institution/Affiliation country: Harran University/TR