| Effect of combined sodium hyaluronate and carboxymethyl cellulose on ocular surface in rat dry eye model |
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Jong-Gab Moon1, Sae-Kwang Ku2, Young-Sam Kwon1 |
1Department of Veterinary surgery, College of Veterinary Medicine, Kyungpook National University
2Department of Anatomy and Histology, College of Oriental Medicine, Daegu Haany University |
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| Abstract |
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This study was conducted to evaluate three different mixed formulations of sodium hyaluronate (SH) and carboxymethyl cellulose (CMC) using a low-humidity air flow-induced rat dry eye model and determine the most suitable mixture. The total thickness of the cornea, corneal epithelial thickness, corneal stroma thickness, damaged corneal epithelium percentage region, thickness of the bulbar conjunctiva epithelium, number of goblet cells, goblet cell occupation percentage region, and damaged bulbar conjunctiva epithelium percentage region were measured by histomorphological evaluation. After 5 h exposure to drying airflow, the thickness of the cornea and conjunctiva was decreased with desquamation of the corneal and conjunctiva epithelium. However, these dry eye symptoms were markedly inhibited by treatment with the reference and test formulations. More favorable effects on decreased thickness were detected in response to the CMC than the SH. However, SH had a greater protective effect against corneal and conjunctiva epithelial damage. The application of a mixture of 0.1% SH and 0.2% CMC showed more favorable effects on the corneal and conjunctival damage and the stabilization of the ocular surface than SH or CMC alone. |
| Key Words:
carboxymethyl cellulose, dry eye, rat, sodium hyaluronate |
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