Abstract
Dry-eye syndrome affects millions of individuals and it is essential to develop effective therapeutic agents for the treatment of this complex condition. The goal of this study was to evaluate the effect of apolipoprotein A (ApoA)-1 and its synergistic action with d-pantethine (DP) on corneal epithelial disorders in dry-eye mouse model. Aqueous tear production of C57BL/6J Jms Slc male mice aged 10 to 12 weeks were inhibited by subcutaneous scopolamine injection and mice were placed in a continuous airflow blower to create desiccating environmental stress. During desiccation, 1 eye of each mouse was treated with ApoA-1 (0.01%, 0.04%, or 0.1%) or ApoA-1 (0.04%) + DP (0.05%, 0.1%, or 0.2%) and the other control eye was instilled with phosphate-buffered saline 4 times daily for 5 days. Phenol red thread test, corneal fluorescein staining (score, 0-4), and measurement of corneal epithelial thickness measurements were performed. Significant reductions of staining scores and higher corneal epithelial thickness values were observed in both ApoA-1- and ApoA-1 + DP-treated groups compared with untreated dry-eye mouse and phosphate-buffered saline-treated group. These results suggest that ApoA-1 and DP may be potential therapeutic agents for ocular surface epithelial disorders in patients with dry eye.
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