13 February 2009 Polarization-resolved second-harmonic-generation imaging of photoaged dermal collagen fiber
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Polarization-resolved second-harmonic-generation (SHG) microscopy is useful for assessment of collagen fiber orientation in tissues. In this paper, we investigated the relation between wrinkle direction and collagen orientation in ultraviolet-B-exposed (UVB-exposed) skin using polarization-resolved SHG microscopy. A polarization anisotropic image of the SHG light indicated that wrinkle direction in UVB-exposed skin is predominantly parallel to the orientation of dermal collagen fibers whereas no-UVB-exposed skin was dominated by collagen orientation parallel to the meridian line of body. The method proposed has the potential to become a powerful non-invasive tool for assessment of cutaneous photoaging.
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Takeshi Yasui, Yu Takahashi, and Tsutomu Araki "Polarization-resolved second-harmonic-generation imaging of photoaged dermal collagen fiber", Proc. SPIE 7183, Multiphoton Microscopy in the Biomedical Sciences IX, 71831X (13 February 2009); doi: 10.1117/12.808672; https://doi.org/10.1117/12.808672

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