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Proceedings Paper

Characterising UV transmission property of red hair using microspectrophotometer
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Paper Abstract

Melanoma is one of the most severe types of skin cancer. Although it is generally believed that ultraviolet radiation (UVR) is the main environmental causative risk factor in the induction of melanoma, the cells of origin and mechanisms of melanoma remain unclear. Recent studies show that the melanocyte stem cells in the hair follicles could be the cells of origin of melanoma upon exposure to ultraviolet radiation. Red hair is usually considered as one of the risk factors for melanoma. Therefore, it is of interest to investigate the UV transmission characteristics of hairs from red-hair individuals. In this article, the measurement techniques using a micro-spectrophotometer for studying the transmission characteristics of human hair are demonstrated. Several hair samples from a red-haired adult are studied. The results show that non-medullated red hair has relatively superior transmission properties to the medullated red hair in the UV wavelength range. It has also been found that light blond hair has a noticeably lower attenuation coefficient in the ultraviolet-A (UVA) wavelength range than the light yellow and red hair from the same red-haired individual. Our findings support the hypothesis that the colorless hair may transmit sufficient UV photons to harm the melanocyte stem cells in the hair follicles, ultimately resulting in melanoma.

Paper Details

Date Published: 22 July 2019
PDF: 7 pages
Proc. SPIE 11079, Medical Laser Applications and Laser-Tissue Interactions IX, 1107914 (22 July 2019); doi: 10.1117/12.2522208
Show Author Affiliations
Xiyong Huang, Auckland Univ. of Technology (New Zealand)
Michael D. Protheroe, Auckland Univ. of Technology (New Zealand)
Ahmed M. Al-Jumaily, Auckland Univ. of Technology (New Zealand)
Sharad P. Paul, The Univ. of Auckland (New Zealand)
Andrew N. Chalmers, Auckland Univ. of Technology (New Zealand)
Xiang Fu, Auckland Univ. of Technology (New Zealand)


Published in SPIE Proceedings Vol. 11079:
Medical Laser Applications and Laser-Tissue Interactions IX
Lothar D. Lilge; Carsten M. Philipp, Editor(s)

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