Effects of retinoids on the generation of neutrophil-derived reactive oxygen species studied by EPR spin trapping techniques

1997 ◽  
Vol 46 (10) ◽  
pp. 423-424 ◽  
Author(s):  
M. Bohne ◽  
H. Struy ◽  
A. Gerber ◽  
H. Gollnick
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Spin Trapping ◽  
Oxygen Species ◽  
Epr Spin Trapping

Photocatalytic Degradation of 4-Chlorophenol by •OH Radicals Generated by Thiophene Oligomers Incorporated in ZSM-5 Zeolite Channels

2003 ◽  
Vol 68 (11) ◽  
pp. 2219-2230 ◽  
Author(s):  
Gabriel Čík ◽  
Milada Hubinová ◽  
František Šeršeň ◽  
Jozef Krištín ◽  
Monika Antošová
Keyword(s):  
Reactive Oxygen Species ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Maleic Acid ◽  
Aqueous Suspension ◽  
Reactive Oxygen ◽  
Spin Trapping ◽  
Oh Radicals ◽  
Oxygen Species ◽  
Trapping Method

Degradation of 4-chlorophenol by reactive oxygen species was studied, the latter being generated by photo-assisted reactions of thiophene oligomers, synthesized in channels of the Na-ZSM-5 zeolite. The photoreaction was carried out in an aqueous suspension of photocatalyst, irradiated with visible light (λ > 400 nm). The spin-trapping method was used to detect the generated •OH radicals. The main products of the photodecomposition of 4-chlorophenol were found to be phenol, hydroquinone and maleic acid.

Spin trapping study of reactive oxygen species formation during bopindolol peroxidation

Biopolymers ◽  
2002 ◽  
Vol 65 (1) ◽  
pp. 89-94
Author(s):  
Irena Kruk ◽  
Teresa Michalska ◽  
Aleksandra Kladna ◽  
Hassan Y. Aboul-Enein
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Spin Trapping ◽  
Oxygen Species ◽  
Reactive Oxygen Species Formation ◽  
Species Formation

Evaluation of spin trapping agents and trapping conditions for detection of cell-generated reactive oxygen species

2005 ◽  
Vol 437 (1) ◽  
pp. 59-68 ◽  
Author(s):  
Honglian Shi ◽  
Graham Timmins ◽  
Michael Monske ◽  
Andrew Burdick ◽  
Balaraman Kalyanaraman ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Spin Trapping ◽  
Oxygen Species

scholarly journals Evaluation of the reactive oxygen species scavenging abilities of tomato juice using ESR spin trapping method

2017 ◽  
Vol 27 (4) ◽  
pp. 267-272 ◽  
Author(s):  
Hiromi Kameya ◽  
Toshihiko Shoji ◽  
Yuji Otagiri ◽  
Akio Obata ◽  
Vipavee Trivittayasil ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Spin Trapping ◽  
Tomato Juice ◽  
Oxygen Species ◽  
Esr Spin Trapping ◽  
Trapping Method

scholarly journals EPR spectroscopy investigation of oxygen radical production by methylene blue and indocyanine green in aqueous solutions under laser irradiation in the context of antibacterial photodynamic therapy

Folia Medica ◽  
2021 ◽  
Vol 63 (3) ◽  
pp. 372-376
Author(s):  
Mihail Tanev ◽  
Georgi Tomov ◽  
Yordanka Karakirova
Keyword(s):  
Reactive Oxygen Species ◽  
Methylene Blue ◽  
Photodynamic Therapy ◽  
Aqueous Solutions ◽  
Epr Spectroscopy ◽  
Reactive Oxygen ◽  
Spin Trapping ◽  
Oxygen Radical ◽  
Oxygen Species ◽  
Radical Production

Introduction: Antibacterial photodynamic therapy is a promising treatment modality in the anti-infective therapy of numerous oral diseases. It involves photo activation of a reactive substance (dye), thus releasing reactive oxygen species (ROS-radicals) which are highly destructive to the bacterial cell. However, thorough investigation of radical production properties of different dyes is not common in literature. Aim: The aim of this study was to investigate and evaluate oxygen radical-producing potential of two commonly used photoactive dyes in the context of antibacterial photodynamic therapy. Materials and methods: The radical-producing properties of two commonly used dyes for photodynamic therapy in oral medicine, methylene blue and indocyanine green, irradiated under laser irradiation are investigated using electron paramagnetic resonance (EPR) spectroscopy. The detection of reactive oxygen species is performed with “spin-trapping” technique. Results: The selected photoactive dyes showed promising yields of reactive oxygen species (ROS) in aqueous solutions. The comparative analysis of the results deemed methylene blue as the more productive photoactive agent. Conclusions: By employing the spin-trapping technique, this study indicates EPR-spectroscopy as a promising method of relative quantification of reactive oxygen species released by the photodynamic reaction in aqueous solutions.

Sign in / Sign up

Export Citation Format

Share Document