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1 May 2006 In Vivo Monitoring the Changes of Interstitial pH and FAD/NADH Ratio by Fluorescence Spectroscopy in Healing Skin Wounds
Michal Mokrý, Peter Gál, Boris Vidinský, Jaroslav Kušnír, Katarína Dubayová, Štefan Mozeš, Ján Sabo
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Abstract

The aim of our study was to evaluate the changes of interstitial pH and flavin adenine dinucleotide (FAD)/reduced nicotinamide adenine dinucleotide (NADH) ratio in healing skin wounds using fluorescence spectroscopy in Sprague Dawley rats. In the experiment, excisional and incisional models of wound healing were used. The florescein as the pH-sensitive probe using excitation spectra (λEm = 535 nm) was used for the measurement of pH changes, and synchronous fluorescence spectra (Δλ = 60 nm) for the monitoring of FAD/NADH ratio changes were measured from the surfaces of healing wounds. Increase of interstitial pH and FAD/NADH ratio was recorded during the time interval from the 15th to the 65th minute after surgery. The decrease of pH between the 48th and the 72nd hour after surgery as well as the increase of FAD/NADH ratio between the 72nd and the 96th hour of wound healing were recorded. The results indicate that the use of fluorescence spectroscopy may be considered as a valuable tool for noninvasive in vivo monitoring of selected redox parameters in the early phases of wound healing.

Michal Mokrý, Peter Gál, Boris Vidinský, Jaroslav Kušnír, Katarína Dubayová, Štefan Mozeš, and Ján Sabo "In Vivo Monitoring the Changes of Interstitial pH and FAD/NADH Ratio by Fluorescence Spectroscopy in Healing Skin Wounds," Photochemistry and Photobiology 82(3), 793-797, (1 May 2006). https://doi.org/10.1562/2005-09-08-RA-678
Received: 8 September 2005; Accepted: 1 January 2006; Published: 1 May 2006
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