J Korean Ophthalmol Soc.  2008 Jun;49(6):987-992. 10.3341/jkos.2008.49.6.987.

Corneal Epithelial Wound Healing After Treatment with Gatifloxacin with or Without Benzalkonium Chloride in Rabbits

• Hwang HB
• Roh CR
• Chung SK

• KMID: 2110881
• DOI: http://doi.org/10.3341/jkos.2008.49.6.987

Abstract

PURPOSE: This study was performed to compare the effect of fourth-generation fluoroquinolones gatifloxacin on epithelial healing and penetration into the aqueous humor following corneal epithelial removal. The administered drugs were Zymar(TM) and Gatiflo(R), which differ from each other by the presence of benzalkonium chloride.
METHODS
Eighteen eyes of nine New Zealand white rabbits were randomized to receive either Zymar(TM) or Gatiflo(R) following anterior keratectomy with a diameter of 6.0 mm. Eyes were dosed with either antibiotic according to Food and Drug Administration (FDA) approval; specifically, Zymar(TM) and Gatiflo(R) were dosed every two hours for the first two days and then four times daily for the following five days. Starting from postoperative day 0, photos were taken daily to measure the area of the residual epithelial defects. Anterior chamber paracentesis was performed to determine the drug concentration at postoperative days 1, 2, and 7.
RESULTS
The mean healing times after Zymar(TM) and Gatiflo(R) treatment were 3.0+/-0.71 and 3.2+/-0.84 days, respectively (P=0.813). No statistically significant differences in the mean healing time and the mean area of the healed corneal wound were noted between the two groups. No difference in anterior chamber concentration was observed between the two groups at postoperative day 7 (P=0.362).
CONCLUSIONS
Although the two drugs differ in that on drug has preservatives, no significant differences were found in the epithelial healing effect or anterior chamber concentration after short-term dosing for 1 week in this trial.

Keyword

Corneal wound healing effect; Drug concentration in aqueous chamber; Gatifloxacin.

MeSH Terms

Anterior Chamber
Aqueous Humor
Benzalkonium Compounds
Eye
Fluoroquinolones
Paracentesis
Rabbits
United States Food and Drug Administration
Wound Healing
Benzalkonium Compounds
Fluoroquinolones

Figure

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  Figure 1. (A), (C) Baseline fluorescein images from representative corneas in the Zymar TM (A), and Gatiflo® (C) treatment groups. Images were acquired immediately following surgery. (B),(D) Fluorescein images from representative corneas in the Zymar TM (B), and Gatiflo® (D) treatment groups 72 hours after surgery. The images show the same corneas presented in the Figures A and C.

Reference

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