Modulation of Photoaging-Induced Cutaneous Elastin: Evaluation of Gene and Protein Expression of Markers Related to Elastogenesis Under Different Photoexposure Conditions

The study examined the impact of photoaging on elastin in skin, using samples from 73 female volunteers and in vitro models. It found that UV exposure significantly increased the expression of an altered elastin isoform (exon 26A) and genes related to elastin degradation, such as MMP12 and LOX, in photoexposed skin. Protein analysis showed elevated levels of tropoelastin and fibrillin-1 post-exposure. These changes suggested structural skin alterations contributing to aging signs like wrinkling. The study highlighted exon 26A as a potential marker of photoaging and emphasized the importance of avoiding solar radiation to mitigate skin aging, recommending further research into the mechanisms of elastin alteration for developing anti-aging treatments.