Lin Kuan-Hung, Liao Yi-Hua, Wei Ming-Liang, Sun Chi-Kuang
Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan.
Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
J Biophotonics. 2020 Apr;13(4):e201960063. doi: 10.1002/jbio.201960063. Epub 2019 Dec 5.
Phenotypical and functional differences in the intrinsic skin aging process of individuals between Caucasians and Asians have generated considerable interest in dermatology and cosmetic industry. Most of the studies focused on the stratum corneum, and in some other studies inter-individual differences overwhelms the racial difference. None of the studies comparatively analyzes the difference from the histopathological point of view. Here we report our harmonic generation microscopy study to analyze the difference of intrinsic aging between Caucasian and Asian skin from a histopathological point of view. As a result, the cellular and nuclear areas of basal cells in Caucasian subjects were found to increase at the same rate as the Asian subjects, ideal for scoring age. The maximum thickness of the viable epidermis, the dermal papilla (DP) volume per unit area and the depth of the DP zone in Caucasians were found to decrease at faster rates than those in Asians.
白种人和亚洲人在皮肤自然老化过程中的表型和功能差异引起了皮肤科和化妆品行业的广泛关注。大多数研究集中在角质层,在其他一些研究中,个体差异掩盖了种族差异。没有一项研究从组织病理学角度比较分析这种差异。在此,我们报告我们的谐波产生显微镜研究,从组织病理学角度分析白种人和亚洲人皮肤自然老化的差异。结果发现,白种人受试者基底细胞的细胞和核面积与亚洲受试者以相同速率增加,这对于年龄评分是理想的。发现白种人有活力表皮的最大厚度、单位面积真皮乳头(DP)体积和DP区深度的下降速度比亚洲人更快。