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- W2000753038 abstract "We investigated the use of attenuated total reflection-Fourier transform infrared spectroscopy as a method to study differences in the molecular components of human stratum corneum in vivo. These variations as a function of the anatomic site and of the depth into its layered structure are important to understand the biology and physiology of the tissue. In this preliminary study we have investigated spectroscopic changes in 18 healthy individuals. Total reflection-Fourier transform infrared spectroscopy represents a potentially powerful tool to study biophysical properties of surfaces. We observed that, in vivo, biophysical parameters of the stratum corneum (such as hydration, lipid composition, and conformation of the aliphatic chains) are indeed dependent on the anatomic site. As in total reflection-Fourier transform infrared spectroscopy experiments the penetration depth of the evanescent field into the stratum corneum is comparable with the thickness of a layer of corneocytes, this technique can be used to follow the distribution of lipids, water, and proteins as a function of depth into the tissue. We found that, in vivo, these molecular components are non-uniformly distributed, in agreement with the presence of water and lipid reservoirs as observed with ex vivo ultrastructural investigations. Composition and conformational order of lipids are also a function of depth into the stratum corneum. Finally we compared the in vivo superficial hydration measured using the infrared absorption of the OH stretch of water, with the hydration measured using the Skicon hygrometer. Our results indicate that total reflection-Fourier transform infrared spectroscopy might be useful to measure important chemical and biophysical parameters of stratum corneum in vivo." @default.
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- W2000753038 date "2001-03-01" @default.
- W2000753038 modified "2023-10-12" @default.
- W2000753038 title "Attenuated Total Reflection–Fourier Transform Infrared Spectroscopy as a Possible Method to Investigate Biophysical Parameters of Stratum Corneum In Vivo" @default.
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- W2000753038 doi "https://doi.org/10.1046/j.1523-1747.2001.01262.x" @default.
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