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Effects of light on retinal pigment epithelial cells, neurosensory retinal cells and M üller cells treated with B rilliant B lue G
Author(s) -
Mansoor Saffar,
Sharma Ashish,
CáceresdelCarpio Javier,
Zacharias Leandro C,
Patil A Jayaprakash,
Gupta Navin,
Limb G Astrid,
Kenney M Cristina,
Kuppermann Baruch D
Publication year - 2015
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/ceo.12568
Subject(s) - trypan blue , apoptosis , viability assay , retinal , microbiology and biotechnology , cell culture , medicine , chemistry , biology , ophthalmology , biochemistry , genetics
Background The aim of this study is to evaluate the safety profile of B rilliant B lue G ( BBG ) with and without exposure to light ( L ) on three different retinal cell lines. Method ARPE ‐19, R28 and MIO ‐ M 1 cells were treated with BBG : 0.125 mg/mL (0.5x clinical concentration), 0.25 mg/mL (1x) or 0.5 mg/mL (2x) with or without surgical illumination of halogen light exposure for 10 min, 15 min or 30 min. Cells were further cultured after 24 h and then analysed for cell viability, late stages of apoptosis and mitochondrial damage associated with early apoptosis using assays that measure trypan blue dye exclusion, increases in caspase‐3/7 activity or changes in mitochondrial membrane potential (ΔΨm), respectively. Result All three cell lines that were exposed to BBG in the presence or absence of light exposure for 30 min were found to have cell viability and caspase‐3/7 activity levels similar to the untreated cultures. The mitochondrial membrane potential (ΔΨm) was decreased significantly at the 2x + L dose and 2x dose in all three retinal cell lines compared to their respective untreated control cells. At the lower doses of BBG , with or without exposure to light, the ΔΨm values were similar to the untreated control cultures. Conclusion Exposure to BBG dye concentrations that are used clinically (0.125 mg/mL and 0.25 mg/mL) in the presence up to 30 min of surgically equivalent light intensity is safe for retinal cells.