Open AccessSkin collagen can be accurately quantified through noninvasive optical method: Validation on a swine study
Author(s) -
Tzeng S.Y.,
Kuo T.Y.,
Hu S.B.,
Chen Y.W.,
Lin Y.L.,
Chu K.Y.,
Tseng S.H.
Publication year - 2018
Publication title -
skin research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.521
H-Index - 69
eISSN - 1600-0846
pISSN - 0909-752X
DOI - 10.1111/srt.12390
Subject(s) - chromophore , biomedical engineering , microscopy , materials science , second harmonic generation , optical microscope , pathology , chemistry , optics , medicine , scanning electron microscope , composite material , laser , physics , organic chemistry
Background/purpose Diffuse reflectance spectroscopy ( DRS ) is a noninvasive optical technology characterized by relatively low system cost and high efficiency. In our previous study, we quantified the relative concentration of collagen for the individual keloid patient. However, no actual value of collagen concentration can prove the reliability of collagen detection by our DRS system. Methods Skin‐mimicking phantoms were prepared using different collagen and coffee concentrations, and their chromophore concentrations were quantified using the DRS system to analyze the influence of collagen and other chromophores. Moreover, we used the animal study to compare the DRS system with the collagen evaluation of biopsy section by second‐harmonic generation ( SHG ) microscopy at four different skin parts. Results In the phantom study, the result showed that coffee chromophore did not severely interfere with collagen concentration recovery. In the animal study, a positive correlation ( r =.902) between the DRS system and collagen evaluation with SHG microscopy was found. Conclusions We have demonstrated that the DRS system can quantify the actual values of collagen concentration and excluded the interference of other chromophores in skin‐mimicking phantoms. Furthermore, a high positive correlation was found in the animal study with SHG microscopy. We consider that the DRS is a potential technique and can evaluate skin condition objectively.