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Abstract #3672 Published in IGR 4-2
Antiproliferative effect of mycophenolate mofetil on cultured human tenon fibroblasts
Heinz C; Hudde T; Heise K; Steuhl KPGraefe's Archive for Clinical and Experimental Ophthalmology 2002; 240: 408-414
BACKGROUND: Wound healing after glaucoma filtering surgery is often complicated by exaggerated scarring of the subconjunctival tenon's layer. Therefore, antiproliferatives are commonly employed. The immunosuppressive drug mycophenolate mofetil (MMF) is used to prevent graft rejection after kidney or liver transplantation. The effect is mediated by inhibition of lymphocyte proliferation. In this study, the authors investigated the effect of MMF on human tenon fibroblast proliferation in cell culture. METHODS: Human tenon fibroblasts (HTF) were cultivated with 10% fetal calf serum. Cells were incubated with MMF concentrations of 0.1-3000 μm for up to 20 days. In a second set of experiments, HTF were incubated for ten minutes only in MMF solutions. Cell counts were performed to evaluate the proliferation rate. The proliferation was also assessed by Ki67 staining. Morphological changes were documented by vimentin staining. RESULTS: Growth inhibition of HTF by MMF was concentration dependent. IC50 was 0.85 ± 0.05 μm for six days of incubation. Brief exposure to MMF leads to a reversible growth arrest for up to 14 days with concentrations of 1000 μm or higher. Ki67 staining confirmed the concentration dependent proliferation rate. CONCLUSIONS: MMF has a concentration-dependent antiproliferative effect on HTF without any detected cytotoxicity in the applied concentration range. Brief incubation also leads to a growth arrest; therefore, intraoperative MMF application might prevent exaggerated scarring after glaucoma filtering surgery.
Dr. C. Heinz, Department of Ophthalmology, University of Essen, Hufelandstrasse 55, 45122 Essen, Germany. Carsten.Heinz@uni-essen.de
Classification:
12.8.10 Woundhealing antifibrosis (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
