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Role of reactive oxygen species in ultra-weak photon emission in biological systems

Paper ID Volume ID Publish Year Pages File Format Full-Text
30198 44464 2014 13 PDF Available
Title
Role of reactive oxygen species in ultra-weak photon emission in biological systems
Abstract

•Reactive oxygen species are involved in ultra-weak photon emission.•Oxidative metabolic process leads to spontaneous ultra-weak photon emission.•Oxidative stress processes is linked to stress-induced ultra-weak photon emission.

Ultra-weak photon emission originates from the relaxation of electronically excited species formed in the biological systems such as microorganisms, plants and animals including humans. Electronically excited species are formed during the oxidative metabolic processes and the oxidative stress reactions that are associated with the production of reactive oxygen species (ROS). The review attempts to overview experimental evidence on the involvement of superoxide anion radical, hydrogen peroxide, hydroxyl radical and singlet oxygen in both the spontaneous and the stress-induced ultra-weak photon emission. The oxidation of biomolecules comprising either the hydrogen abstraction by superoxide anion and hydroxyl radicals or the cycloaddition of singlet oxygen initiate a cascade of oxidative reactions that lead to the formation of electronically excited species such as triplet excited carbonyl, excited pigments and singlet oxygen. The photon emission of these electronically excited species is in the following regions of the spectrum (1) triplet excited carbonyl in the near UVA and blue–green areas (350–550 nm), (2) singlet and triplet excited pigments in the green–red (550–750 nm) and red-near IR (750–1000 nm) areas, respectively and (3) singlet oxygen in the red (634 and 703 nm) and near IR (1270 nm) areas. The understanding of the role of ROS in photon emission allows us to use the spontaneous and stress-induced ultra-weak photon emission as a non-invasive tool for monitoring of the oxidative metabolic processes and the oxidative stress reactions in biological systems in vivo, respectively.

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Keywords
Chemiluminescence; Hydroxyl radical; Hydrogen peroxide; Lipid peroxidation; Metabolic oxidative processes; Reactive oxygen species; Superoxide anion radical; Singlet oxygen; Skin pigment; ChlorophyllSOD, superoxide dismutase; NADPH, nicotinamide adenine d
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Role of reactive oxygen species in ultra-weak photon emission in biological systems
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 139, 5 October 2014, Pages 11–23
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us