LOW-LEVEL LASER THERAPY: EFFECTS ON HUMAN FACE AGED SKIN AND CELL VIABILITY OF HELA CELLS EXPOSED TO UV RADIATION
2015
Chronic and excessive exposure to UV radiation leads to photoaging and
photocarcinogenesis. Adequate protection of the skin against the deleterious
effects of UV irradiation is essential. Low-level laser therapy (LLLT) is a
light source in the red to near-infrared range that has been accepted in a
variety of medical applications. In this study, we explored the effect of
LLLT in human face aged skin and the cell viability of HeLa cells exposed to
UV radiation. We found that LLLT significantly reduced visible wrinkles and
the loss of firmness of facial skin in aging subjects. Additionally,
treatment of cultured HeLa cells with LLLT prior to or post UVA or UVB
exposure significantly protected cells from UV-mediated cell death. All
results showed the beneficial effects of LLLT on relieving signs of skin
aging and its prevention and protection of the cell viability against
UV-induced damage.
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