Authors: Lu, Kecheng¹; Chen, Jianxin¹; Zhuo, Shuangmu¹; Zheng, Liqin¹; Jiang, Xingshan¹; Zhu, Xiaoqin¹; Zhao, Jingjun²

Source: Skin Research and Technology, Volume 15, Number 4, November 2009 , pp. 489-495(7)

Publisher: Wiley-Blackwell

Abstract:

Background/purpose:

A real-time, non-invasive method will confer a benefit for the diagnosis and treatment of localized scleroderma (LS) in the clinic. The aim of this work was to demonstrate the potential of multiphoton laser scanning microscopy (MPLSM) for diagnosing LS and monitoring the treatment response in vivo. Methods:

Three sclerodermatous skin specimens and two normal skin specimens were investigated using MPLSM based on two-photon excitation fluorescence (TPEF) and second harmonic generation (SHG). MPLSM consists of a femtosecond Ti:sapphire laser and a scanning inverted microscope. Several parameters such as the epidermal thickness, the orientation ratio index of collagen bundles (ORICB), the spacing of collagen fibrin as well as the SHG to TPEF index of the dermis (STID) were developed to quantitatively discriminate the sclerodermatous skin from the normal skin. Results:

The morphological differences were visualized obviously in the TPEF/SHG images of human skin (normal and sclerodermatous). The values of the developed parameters in normal skin were significantly different from that in sclerodermatous skin (P<0.05). Conclusion:

MPLSM could discriminate the sclerodermatous skin from the normal skin. With the advent of the clinical portability of typical MPLSM, this technique has great potential for application in the in vivo diagnosis of LS as well as for monitoring the treatment response.

Keywords: scleroderma; two-photon excited fluorescence; second harmonic generation

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1600-0846.2009.00395.x

Affiliations: 1: Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China, 2: Department of Dermatology, Affiliated Union Hospital, Fujian Medical University, Fuzhou, China

Publication date: 2009-11-01

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