The Effect of Narrow and Broad Band Ultraviolet B Onto Keloid Fibroblast-VEGF Expressions
Yohanes Widodo Wirohadidjojo Ishandono Dahlan
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Abstract
Background: Collagenase inactivation of keloid lesions is due to plasminogen activator inhibitors which are synthesized under stimulation of vascular endothelial growth factor (VEGF), a released protein under hypoxia conditions. On the other hand, ultraviolet B (UVB) may generate various oxidative molecules of irradiated chromophores. The effect of UVB in VEGF synthesis is unclear. ObJective. To know the effect of narrow and broad band ultraviolet-B on keloid fibroblast-VEGF expression. Materials and methods: Materials in this study were keloid materials collected from dermatosurgery and plastic surgery keloid revision. A parallel simple experiment study was performed to compare the effect of 0, 50, 75, and 100mJ/cm2 of broad band (BBUVB) as well as narrow band UVB (NBUVB) in VEGF synthesis of passage-3 keloid fibroblasts isolated from 4 patients. Samples were stained with monoclonal antibody anti VEGF. The selected DAB-brown colors of cytoplasm were computed based on Photoshop software histogram. Results: Compared to untreated group, all of various NBUVB showed a very significant (P0.05) between NBUVB and BBUVB groups. Conclusion: NBUVB as well as BBUVB can suppress VEGF synthesis among irradiated keloid fibroblasts. The 50 mJ/cm2 of NB UVB as well as 75 mJ/cm2 of BBUVB may be developed as the modality in keloid prevention or treatment. Keywords: keloid-fibroblasts, broad-band UVB, narrow-band UVB, VEGF
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Copyright (c) 2015 Yohanes Widodo Wirohadidjojo Ishandono Dahlan
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Journal of the Medical Sciences (Berkala Ilmu Kedokteran ) by Universitas Gadjah Mada is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License . Based on a work at http://jurnal.ugm.ac.id/bik/ .