Zülfükar Kadir SARITAŞ, Hatice Çilem PERÇİN

Evaluation of the early term healing effects of resveratrol on corneal wounds in rats

The aim of this study was to determine the effects of resveratrol (RES) treatment on corneal wound healing. Randomly divided into 2 groups were 26-week-old male Wistar albino rats. Group 1 was the control group (C) and group 2 was the RES group. A 2–3-mm-long vertical incision was made centrally in the right cornea of each rat to the descemet membrane using loupe magnification (2.5X) and the wounds were sutured using 10/0 nylon material. In the RES group, the rats were fed 30 mg/kg/day RES via oral gavage; the C and RES groups were provided food and water ad libitum for only 11 days. The matrix metalloproteinase-9 (MMP-9), nitric oxide, and malondialdehyde (MDA) levels, and antioxidant status (AOS) were measured. On day 11, the rats were euthanized and examined histologically. The score of 3 for connective tissue proliferation, in both the C and RES groups, indicated rates of 11.1% and 0.0%, respectively (P < 0.05). The score of 3 for inflammatory cell reaction, in both the C and RES groups, indicated rates of 11.1% and 0.0%, respectively (P < 0.05). The MDA results were as follows: days 0 and 11, 1.61 ± 0.316 and 2.854 ± 0.572 for the C and RES groups, respectively. The increase in group C was statistically significant (P < 0.001). The MMP-9 level was 1.115 ± 0.197 and 2.842 ± 0.368, respectively, in the 2 groups. The increase in the RES group was statistically significant (P < 0.01). According to the AOS, the intergroup difference was statistically significant (P < 0.05). As a result, RES inhibited vascularization of the corneal wound and retained the transparency of the corneal tissue. It is therefore suggested that extended studies and follow-up times are needed to better evaluate the outcomes of RES on the healing corneal wounds.

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