The effect of a sunscreen containing a p-aminobenzoic acid (PABA) ester on ultraviolet-induced DNA injury was assessed on human epidermal cells by the measure of unscheduled DNA synthesis intensity. Our results show that DNA repair was reduced by approximately 50%. Therefore, sunscreens based on PABA esters might be expected to reduce photocarcinogenesis.
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Rijcke et al. (2009) studied this question.
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