The wound healing effects of vitamin A eye drops after a corneal alkali burn in rats.

We investigated the wound healing effect of retinyl palmitate eyedrops following a corneal alkali burn in rats. A total of 160 Sprague-Dawley male rats were divided into two groups and central corneas were injured by contacting eyes with filter paper saturated with 0.01 m NaOH for 45 seconds. Vitamin A group was treated with retinyl palmitate and antibiotic (Cravit(®) : 0.5% levofloxacin) eye drops four times daily for 3 days and the control group with vehicle and antibiotic eye drops. Corneal wound healing by fluorescein staining and impression cytologic analysis were conducted at 0, 24, 48 and 72 hr after injury. Vascular endothelial growth factor A (VEGF-A), thrombospondin 2, matrix metalloproteinase 9 (MMP 9) and transforming growth factor-β (TGF-β) were measured in corneas by ELISA, immunofluorescent staining and real-time PCR. Corneal wound healing was better in the vitamin A group than in the control group. Early sprouting of new vessel was observed in the control group at 72 hr, but not in the vitamin A group. Corneal thrombospondin 2 proteins in ELISA were higher in the vitamin A group, but VEGF-A, MMP 9 and TGF-β proteins were higher in the control group (p < 0.05). Similarly, thrombospondin 2 immunofluorescent staining was stronger, whereas VEGF-A, MMP 9 and TGF-β staining were weaker in the vitamin A group (p < 0.05). In addition, thrombospondin 2 mRNA levels were higher, whereas VEGF-A, MMP 9 and TGF-β mRNA levels were lower in the vitamin A group (p < 0.05). Retinyl palmitate eye drops can inhibit VEGF-A and activate thrombospondin 2 and improve conjunctival impression cytologic findings. Furthermore, retinyl palmitate eye drops were found to promote corneal healing after an alkali burn in rats.

Kim EC ，Kim TK ，Park SH ，Kim MS ... -  《-》

Bevacizumab eye drops delay corneal epithelial wound healing and increase the stromal response to epithelial injury in rats.

To evaluate the effects of bevacizumab eye drops on corneal epithelial wound healing and the stromal response after epithelial injury in rats. We divided 160 Sprague-Dawley male rats into two groups and de-epithelized corneas with a microblade. Five percent bevacizumab (Avastin) and antibiotic (Cravit) eyedrops were treated four times daily in the bevacizumab group and antibiotic eye drops only in the control group. Wound area evaluation, enzyme-linked immunosorbent assay, immunofluorescent staining, and real-time polymerase chain reaction were performed with rat corneas. The percentage of wound healing in the bevacizumab group was lower than in the control group at 24, 48 and 72 hours after epithelial debridement (P = 0.02, 0.01 and 0.01). Corneal matrix metalloproteinase-2 (P = 0.02, 0.01 and 0.02), matrix metalloproteinase-9 (P = 0.03, 0.01 and 0.01) and transforming growth factor-β (P = 0.02, 0.02 and 0.01) proteins in the bevacizumab group were higher than control group at 24, 48, and 72 hours. Matrix metalloproteinase-2, matrix metalloproteinase-9, transforming growth factor-b and a-smooth muscle actin were strongly stained in the bevacizumab corneas compared with control corneas in immunofluorescent staining. Matrix metalloproteinase-2 (P = 0.04, 0.03 and 0.04), matrix metalloproteinase- 9 (P = 0.03, 0.01 and 0.02), transforming growth factor-b (P = 0.03, 0.03 and 0.03) and a-smooth muscle actin (P = 0.04, 0.01 and 0.04) messenger RNA levels in the bevacizumab group were also highly expressed compared with the control group at 24, 48, and 72 hours. The bevacizumab eye drops delay the wound healing and increase stromal response after corneal epithelial injury in rats.

Kim EC ，Ryu HW ，Lee HJ ，Kim MS ... -  《-》

The inhibitory effects of bevacizumab eye drops on NGF expression and corneal wound healing in rats.

Kim EC ，Lee WS ，Kim MS 《-》

Effects of nicotine on corneal wound healing following acute alkali burn.

Kim JW ，Lim CW ，Kim B 《PLoS One》

Inhibitory effect of sub-conjunctival tocilizumab on alkali burn induced corneal neovascularization in rats.

Sari ES ，Yazici A ，Aksit H ，Yay A ，Sahin G ，Yildiz O ，Ermis SS ，Seyrek K ，Yalcin B ... -  《-》