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  • Title: Inhibitory effects of tranilast on the proliferation and functions of human pterygium-derived fibroblasts.
    Author: Isaji M, Kikuchi S, Miyata H, Ajisawa Y, Araki-Inazawa K, Tsukamoto Y, Amano Y.
    Journal: Cornea; 2000 May; 19(3):364-8. PubMed ID: 10832700.
    Abstract:
    PURPOSE: We studied the possibility that tranilast, an antiallergic and antiproliferative drug, may be beneficial for the treatment of pterygium. METHODS: Pterygium-derived cells were identified by immunohistochemical methods. Growth rate of pterygium-derived cells was determined by using a hemocytometer. Chemotaxis was determined in a microchemotaxis chamber. Pterygium-derived cells were cultured on floating collagen gel, and the contracted diameter was measured. Collagen synthesis by pterygium-derived cells was determined by the collagenase digestive method. Tranilast was added to the culture medium at final concentrations of 0, 12.5, 25, 50, and 100 microg/ml. RESULTS: Pterygium-derived cells were stained with anti-prolylhydroxylase and anti-alpha-smooth muscle actin, and identified as fibroblasts. Tranilast inhibited the proliferation and chemotaxis of pterygium-derived fibroblasts, and the collagen-gel contraction induced by these cells, but it exerted no inhibitory action on collagen synthesis by pterygium-derived fibroblasts. CONCLUSION: Tranilast may be useful for suppressing the recurrence and, possibly, the development of pterygium.
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