Tatsiana Mironava, Michael Hadjiargyrou, Marcia Simon and Miriam H. Rafailovich The Effects of UV Emission from Compact Fluorescent Light Exposure on Human Dermal Fibroblasts and Keratinocytes In Vitro Photochemistry and Photobiology 88
Compact fluorescent light (CFL) bulbs can provide the same amount of lumens as incandescent light bulbs, using one quarter of the energy. Measurements of UV emissions from these bulbs found significant levels of UVC and UVA, which appeared to originate from cracks in the phosphor coatings, present in all bulbs studied. Cells exposed to CFLs exhibited a decrease in the proliferation rate, migration, collagen contraction and increase in reactive oxygen species production. The response of the cells to the CFLs was consistent with damage from UV radiation, which was further enhanced by low dosages of TiO2 nanoparticles, normally used for UV absorption.
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