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학술저널
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대한안과학회 Korean Journal of Ophthalmology Korean Journal of Ophthalmology 제28권 제2호
발행연도
2014.1
수록면
170 - 176 (7page)

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Purpose: To investigate the effect of macrophage migration inhibitory factor (MIF) on corneal sensitivity afterlaser in situ keratomileusis (LASIK) surgery. Methods: New Zealand white rabbits were used in this study. A hinged corneal flap (160-μm thick) was createdwith a microkeratome, and -3.0 diopter excimer laser ablation was performed. Expressions of MIF mRNA inthe corneal epithelial cells and surrounding inflammatory cells were analyzed using reverse transcription polymerasechain reaction at 48 hours after LASIK. After LASIK surgery, the rabbits were topically given either 1)a balanced salt solution (BSS), 2) MIF (100 ng/mL) alone, or 3) a combination of nerve growth factor (NGF, 100ug/mL), neurotrophine-3 (NT-3, 100 ng/mL), interleukin-6 (IL-6, 5 ng/mL), and leukemia inhibitory factor (LIF, 5ng/mL) four times a day for three days. Preoperative and postoperative corneal sensitivity at two weeks and at10 weeks were assessed using the Cochet-Bonnet esthesiometer. Results: Expression of MIF mRNA was 2.5-fold upregulated in the corneal epithelium and 1.5-fold upregulatedin the surrounding inflammatory cells as compared with the control eyes. Preoperative baseline corneal sensitivitywas 40.56 ± 2.36 mm. At two weeks after LASIK, corneal sensitivity was 9.17 ± 5.57 mm in the BSStreated group, 21.92 ± 2.44 mm in the MIF treated group, and 22.42 ± 1.59 mm in the neuronal growth factors-treated group (MIF vs. BSS, p < 0.0001; neuronal growth factors vs. BSS, p < 0.0001; MIF vs. neuronalgrowth factors, p = 0.815). At 10 weeks after LASIK, corneal sensitivity was 15.00 ± 9.65, 35.00 ± 5.48, and29.58 ± 4.31 mm respectively (MIF vs. BSS, p = 0.0001; neuronal growth factors vs. BSS, p = 0.002; MIF vs. neuronal growth factors, p = 0.192). Treatment with MIF alone could achieve as much of an effect on recoveryof corneal sensation as treatment with combination of NGF, NT-3, IL-6, and LIF. Conclusions: Topically administered MIF plays a significant role in the early recovery of corneal sensitivity afterLASIK in the experimental animal model.

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