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TOWARD A GENOTOXIC PROTECTION FACTOR

机译:寻求基因保护因子

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摘要

-P53, a molecule normally expressed before mitosis, is considered as the 'guardian of the genome'. In the skin its level is normally very low (< 3/100 of cells), detected by immunohistochemical methods. At least 50/100 of the keratinocytes express p53 protein, 24 h following a significant UV irradiation (2 SED). It is expected using suncreens to reduce the expression of p53 in parallel with their ability to reduce the actinic erythema, the endpoint adopted to evaluate the Sun Protection Factor (SPF) of suncreens. P53 detection on biopsies performed on the buttocks of human volunteers was used to evaluate the genotoxic protect- ing factor (GPF) of several sunscreens with either high UVB filtration or high UVA filtration, characterised by various SPF (COLIPA) from 10 to 40.
机译:-P53,一种通常在有丝分裂前表达的分子,被认为是“基因组的守护者”。通过免疫组织化学方法检测,在皮肤中其水平通常非常低(<3/100细胞)。在明显的紫外线照射(2 SED)后24小时,至少50/100个角质形成细胞表达p53蛋白。预计使用防晒霜可以减少p53的表达,同时还具有减少光化性红斑的能力,这是评估防晒霜的防晒系数(SPF)的终点。对人类志愿者的臀部进行活检的P53检测用于评估几种防晒霜的遗传毒性保护因子(GPF),这些防晒霜具有高UVB过滤或高UVA过滤特性,其SPF(COLIPA)为10至40。

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