Advertisement
Advertise here Publish your press releases here Sponsor BioPortfolio
Follow us on Twitter Sign up for daily news and research emails Contributors wanted

First Direct In Situ EPR Spectroelectrochemical Evidence of the Superoxide Anion Radical.

20:45 EDT 23rd April 2014 | BioPortfolio

Summary of "First Direct In Situ EPR Spectroelectrochemical Evidence of the Superoxide Anion Radical."

For the first time, the superoxide anion radical was formed by electrochemical reduction of oxygen and detected in situ by EPR spectroscopy without changing the temperature. The spin susceptibilities of solid superoxide solutions were measured between 280 and 4 K showing Curie behavior. The EPR results were explained in the frame of an ion association and support the formation of a loose ion pair between the superoxide anion radical and the potassium crown ether complex. An alternative explanation for the large EPR line width of the superoxide anion radical at higher temperatures is given.

Affiliation

Leibniz Institute for Solid State and Materials Research IFW Dresden , PF 270116, D-01171 Dresden, Germany.

Journal Details

This article was published in the following journal.

Name: The journal of physical chemistry. B
ISSN: 1520-5207
Pages: 12036-9

Links

PubMed Articles [11478 Associated PubMed Articles listed on BioPortfolio]

Scavenging rate constants of hydrophilic antioxidants against multiple reactive oxygen species.

Scavenging rate constants of eight hydrophilic antioxidants, including caffeic acid, chlorogenic acid, genistein, glutathione, N-acetylcysteine, rutin, trolox, and uric acid against multiple ROS, name...

Studies on the antioxidant activities of some new chromone compounds.

Recent reviews evidence that the naturally occurring compounds containing the chromone skeleton exhibit antiradical activities, providing protection against oxidative stress. The antioxidant activitie...

Further in vitro evaluation of antiradical and antimicrobial activities of phytol.

The antiradical activity of phytol was evaluated by electron paramagnetic resonance towards hydroxyl radical (√OH), superoxide anion radical ([Formula: see text]), methoxy radical (√CH2OH), carbon...

Studies on the antioxidant activity of some thiazolidinedione, imidazolidinedione and rhodanine derivatives having a flavone core.

A series of flavonyl-2,4-thiazolidinedione, imidazolidinedione and rhodanine derivatives were tested for their antioxidant activity as scavengers of oxygen free radicals. Free radical scavenging activ...

Development of Lecithinized Superoxide Dismutase as a Drug for IPF.

  Idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD) are thought to involve lung injury induced by reactive oxygen species (ROS), in particular superoxide anion. Th...

Clinical Trials [1439 Associated Clinical Trials listed on BioPortfolio]

Maternal Oxygen Use During Delivery and Cord Blood Superoxide Dismutase

When exposed to oxygen immediately after birth, newborns suffer from an oxidative stress with a significant decrease in serum concentration of the anti-oxidant enzyme superoxide dismutase....

Phase I - Pre-Radical Prostatectomy RTVP-1 Gene Therapy for Prostate Cancer

The purpose of this study is to conduct a Phase I clinical trial involving in situ RTVP-1 gene therapy for prostate cancer. We will conduct necessary safety evaluations on a new adenoviru...

Preop Conformal Radiotherapy - Prostate

Radical prostatectomy and radical radiation therapy remain the standard treatment approaches for patients with clinically localized prostate cancer (T1, T2).Radical prostatectomy is most e...

Chart Review of Laparoscopic Radical Cystectomy

The investigator intends to review retrospective de-identified data of patients who have had Laparoscopic Radical Cystectomies by the Department of Urology at UCIMC.

Advanced Hemodynamic Monitoring for Goal-directed Hemodynamic Management During Radical Cystectomy

The purpose of this study is to determine whether increasing cardiac output by a combination of intravenous fluids and inotropic drugs can reduce mortality and morbidity in radical cystect...

Medical and Biotech [MESH] Definitions

A flavoprotein enzyme that catalyzes the univalent reduction of OXYGEN using NADPH as an electron donor to create SUPEROXIDE ANION. The enzyme is dependent on a variety of CYTOCHROMES. Defects in the production of superoxide ions by enzymes such as NADPH oxidase result in GRANULOMATOUS DISEASE, CHRONIC.

An oxidoreductase that catalyzes the reaction between superoxide anions and hydrogen to yield molecular oxygen and hydrogen peroxide. The enzyme protects the cell against dangerous levels of superoxide. EC 1.15.1.1.

A potent oxidant synthesized by the cell during its normal metabolism. Peroxynitrite is formed from the reaction of two free radicals, NITRIC OXIDE and the superoxide anion (SUPEROXIDES).

A technique that labels specific sequences in whole chromosomes by in situ DNA chain elongation or PCR (polymerase chain reaction).

The univalent radical OH. Hydroxyl radical is a potent oxidizing agent.

Search BioPortfolio: