Investigation of the effect of hydration on dermal collagen in ex vivo human skin tissue using second harmonic generation microscopy

Ravikant Samatham, Nicholas K. Wang, Steven L. Jacques

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Effect of hydration on the dermal collagen structure in human skin was investigated using second harmonic generation microscopy. Dog ears from the Mohs micrographic surgery department were procured for the study. Skin samples with subject aged between 58-90 years old were used in the study. Three dimensional Multiphoton (Two-photon and backward SHG) control data was acquired from the skin samples. After the control measurement, the skin tissue was either soaked in deionized water for 2 hours (Hydration) or kept at room temperature for 2 hours (Desiccation), and SHG data was acquired. The data was normalized for changes in laser power and detector gain. The collagen signal per unit volume from the dermis was calculated. The desiccated skin tissue gave higher backward SHG compared to respective control tissue, while hydration sample gave a lower backward SHG. The collagen signal decreased with increase in hydration of the dermal collagen. Hydration affected the packing of the collagen fibrils causing a change in the backward SHG signal. In this study, the use of multiphoton microscopy to study the effect of hydration on dermal structure was demonstrated in ex vivo tissue.

Original languageEnglish (US)
Title of host publicationPhotonic Therapeutics and Diagnostics XII
EditorsAndreas Mandelis, Bernard Choi, Brian J. F. Wong, Justus F. Ilgner, Laura Marcu, Melissa C. Skala, Nikiforos Kollias, Haishan Zeng, Hyun Wook Kang, Guillermo J. Tearney, Kenton W. Gregory, Paul J. Campagnola
PublisherSPIE
ISBN (Electronic)9781628419245
DOIs
StatePublished - 2016
EventPhotonic Therapeutics and Diagnostics XII - San Francisco, United States
Duration: Feb 13 2016Feb 14 2016

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume9689
ISSN (Print)1605-7422

Other

OtherPhotonic Therapeutics and Diagnostics XII
Country/TerritoryUnited States
CitySan Francisco
Period2/13/162/14/16

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging
  • Biomaterials

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