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KMID : 0360220120530030466
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Journal of the Korean Ophthalmological Society
2012 Volume.53 No. 3 p.466 ~ p.472
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Effects of Cyclosporin on Pterygium Fibroblasts
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Lee Jong-Soo
Lee Seung-Uk
Lee Sang-Jun
Kim Na-Mi
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Abstract
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Purpose: To evaluate the response and cellular damage of cultured human pterygial cells according to the concentration and exposure time of topical cyclosporin.
Methods: Human pterygial cells were exposed to a cyclosporin A concentrations of 0.1 μg/ml (0.0001%), 1 μg/ml (0.0001%), 10 μg/ml (0.001%), 100 μg/ml (0.01%), or 500 μg/ml (0.05%) for 5 or 10 minutes. An MTT-based colorimetric assay was performed to assess the metabolic activity of cellular proliferation, and a lactate dehydrogenase (LDH) leakage assay was used to determine cellular damage. The extra-cellular matrix of PIP, laminin and MMP were evaluated, and the measurement of pro-inflammatory cytokine, TNF-α and IL-1b. IL-6, IL-8 was performed using ELISA kits.
Results: The pterygial cellular inhibitory effect of cyclosporin was similar to that of the control according to the concentration and exposure time (p > 0.05). Compared with the control, the level of LDH did not show a statistically significant difference between concentration and exposure time (p > 0.05). There was no significant difference of inhibitory effects by PIP, laminin, or MMP between the experimental and control groups (p > 0.05). The production of TNF-α and IL from the experimental pterygial cells due to the effect of cyclosporin was not significantly different from that of the control at a longer exposure time or stronger concentration (p > 0.05).
Conclusions: The response of pterygial cells to topical cyclosporin A at concentrations less than 0.05% for less than 10 minutes of exposure time showed no prevention of pterygial recurrence. With regard to cellular damage, little effects on inhibition of PIP, laminin, MMP, IL, and TNF-α were observed compared with that of the control.
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KEYWORD
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Cyclosporin, IL, LDH, MMP, Pterygium
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