Results 31 to 40 of about 249,867 (244)

Dietary Antioxidant An Indispensible Nutrient

open access: yesJournal of Bahria University Medical and Dental College, 2019
Free radicals prevail as atoms, molecules or unpaired electrons being extremely reactive as well as unstable1. They can lead to chemical reactions alongside different molecules.
Shizma Junejo   +2 more
doaj   +1 more source

Reactive nitrogen and oxygen species in anticoagulated blood of healthy sheep

open access: yes, 2013
Background : Little or no study has been done to compare the indices of ‘nitrosative’ and ‘oxidative’ stresses, especially in terms of correlation and the possible differential effects of the chelating agents.
Nwose, Ezekiel Uba   +2 more
core   +1 more source

Oxidative Stress and Cell Senescence Process

open access: yesAntioxidants, 2022
Oxidative stress due to excessive amounts of reactive oxygen species (ROS) and reactive nitrogen species (RNS) plays a leading role in damages to macromolecules and, as such, it represents a key driver of numerous physio-pathological events, including ...
Raffaella Faraonio
doaj   +1 more source

Reactive Oxygen, Nitrogen and Sulfur Species in Plants: Production, Metabolism, Signaling and Defense Mechanisms

open access: yes, 2019
Presents a multidisciplinary analysis of the integration among reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS).

core   +1 more source

Reactive Oxygen Species and Reactive Nitrogen Species in Epigenetic Modifications

open access: yes, 2014
For the normal homeostasis of a cell, there must be a balance between radical oxygen species/radical nitrogen species (ROS/RNS) production and the neutralization of these species by antioxidant scavenging.
O’Byrne, Kenneth J.   +5 more
core   +1 more source

Silver nanoparticles can attenuate nitrative stress

open access: yesRedox Biology, 2017
We have reported previously that glucose availability can modify toxicity of silver nanoparticles (AgNPs) via elevation of antioxidant defence triggered by increased mitochondrial generation of reactive oxygen species.
Mariusz Zuberek   +3 more
doaj   +1 more source

Interaction of lidocaine with reactive oxygen and nitrogen species

open access: yes, 2001
Background and objective To investigate the ability of lidocaine to inhibit reactive oxygen and/or nitrogen species generation by either human leukocytes or cell-free systems via luminol- and lucigenin-enhanced ...
Demiryurek, At, Günaydın, Dudu Berrin
core   +1 more source

Spatial oxygen heterogeneity in a Hediste diversicolor irrigated burrow [PDF]

open access: yes, 2011
The heterogeneity of oxygen distribution in a Hediste diversicolor burrow environment was investigated in a laboratory experiment using a 6-mm thick tank equipped with oxygen planar optodes. The twodimensional oxygen distribution in a complete burrow was
Franck Gilbert   +11 more
core   +1 more source

Trifluoperazine inhibits acetaminophen-induced hepatotoxicity and hepatic reactive nitrogen formation in mice and in freshly isolated hepatocytes

open access: yesToxicology Reports, 2017
The hepatotoxicity of acetaminophen (APAP) occurs by initial metabolism to N-acetyl-p-benzoquinone imine which depletes GSH and forms APAP-protein adducts.
Sudip Banerjee   +6 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

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