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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F12%3A33142592%21RIV13-MSM-15310___
rdf:type
skos:Concept n12:Vysledek
dcterms:description
The solar radiation entering the surface of the Earth has severe negative impacts on the organism. The visible light and UVA radiation are known to initiate the formation of reactive oxygen species (ROS) in the human skin by photosensitization reaction (type I and type II). In the present study, we investigated the role of visible light and UVA radiation in the generation of ROS on the dorsal and the palmar side of the hand. The ROS are known to oxidize biomolecules such as lipids, proteins and nucleic acids forming electronically excited species finally leading to ultra-weak photon emission. We have employed highly sensitive charged coupled device camera and low-noise photomultiplier tube for detection of two-dimensional and one-dimensional ultra-weak photon emission, respectively. Our experimental results show that the oxidative stress is generated by the exposure of the human skin to visible light and UVA radiation. The oxidative stress generated by UVA radiation is claimed to be significantly higher than the visible light. Two-dimensional photon imaging can serve as a potential tool for monitoring the oxidative stress in the human skin induced by various stress factors irrespective of its physical or chemical nature. The solar radiation entering the surface of the Earth has severe negative impacts on the organism. The visible light and UVA radiation are known to initiate the formation of reactive oxygen species (ROS) in the human skin by photosensitization reaction (type I and type II). In the present study, we investigated the role of visible light and UVA radiation in the generation of ROS on the dorsal and the palmar side of the hand. The ROS are known to oxidize biomolecules such as lipids, proteins and nucleic acids forming electronically excited species finally leading to ultra-weak photon emission. We have employed highly sensitive charged coupled device camera and low-noise photomultiplier tube for detection of two-dimensional and one-dimensional ultra-weak photon emission, respectively. Our experimental results show that the oxidative stress is generated by the exposure of the human skin to visible light and UVA radiation. The oxidative stress generated by UVA radiation is claimed to be significantly higher than the visible light. Two-dimensional photon imaging can serve as a potential tool for monitoring the oxidative stress in the human skin induced by various stress factors irrespective of its physical or chemical nature.
dcterms:title
Ultraweak photon emission induced by visible light and ultraviolet A radiation via photoactivated skin chromophores: in vivo charge coupled device imaging Ultraweak photon emission induced by visible light and ultraviolet A radiation via photoactivated skin chromophores: in vivo charge coupled device imaging
skos:prefLabel
Ultraweak photon emission induced by visible light and ultraviolet A radiation via photoactivated skin chromophores: in vivo charge coupled device imaging Ultraweak photon emission induced by visible light and ultraviolet A radiation via photoactivated skin chromophores: in vivo charge coupled device imaging
skos:notation
RIV/61989592:15310/12:33142592!RIV13-MSM-15310___
n12:predkladatel
n13:orjk%3A15310
n3:aktivita
n11:S n11:P
n3:aktivity
P(ED0007/01/01), P(EE2.3.20.0057), S
n3:cisloPeriodika
8
n3:dodaniDat
n19:2013
n3:domaciTvurceVysledku
n14:3069737 n14:6784976
n3:druhVysledku
n7:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
175839
n3:idVysledku
RIV/61989592:15310/12:33142592
n3:jazykVysledku
n8:eng
n3:klicovaSlova
UVA radiation.; oxidative stress; skin chromophores; ultra-weak photon emission; skin; Two-dimensional CCD imaging
n3:klicoveSlovo
n4:skin%20chromophores n4:oxidative%20stress n4:ultra-weak%20photon%20emission n4:Two-dimensional%20CCD%20imaging n4:skin n4:UVA%20radiation.
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[EF421C75CA78]
n3:nazevZdroje
Journal of Biomedical Optics
n3:obor
n17:BO
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n9:ED0007%2F01%2F01 n9:EE2.3.20.0057
n3:rokUplatneniVysledku
n19:2012
n3:svazekPeriodika
17
n3:tvurceVysledku
Pospíšil, Pavel Prasad, Ankush
n3:wos
000309696800036
s:issn
1083-3668
s:numberOfPages
9
n10:doi
10.1117/1.JBO.17.8.085004
n18:organizacniJednotka
15310