A new paper was published by our project of polarization sensitive optical coherence tomography (PS-OCT) and skin investigation in Journal of Investigative Dermatology (JID). In this paper, we examined photo-aged skins of young and old subjects by PS-OCT and quantitatively analyzed the skin birefringence. In this study, we found that dermal birefringence of the cheek skin, which was well exposed by sun light, was significantly smaller in the old group than in the young group. On the other hand, the interior upper arm, which was normally exposed by sun light, showed no age-dependent difference.
The abstract and the full article are available on the journal web site and PubMed.
Citation: S. Sakai, M. Yamanari, A. Miyazawa, M. Matsumoto, N. Nakagawa, T. Sugawara, K. Kawabata, T. yatagai, and Y. Yasuno, "In vivo three-dimensional birefringence analysis shows collagen differences between young and old photo-aged human skin," J. Inv. Dermatol. 128, 1641-1647 (2008).
Joschi, Yoshiaki Yasuno