Results 21 to 30 of about 257,710 (254)

Adventitious Root Formation in Plants: The Implication of Hydrogen Peroxide and Nitric Oxide

open access: yesAntioxidants, 2023
Adventitious root formation is defined as the formation of new roots on above-ground plant parts and is considered crucial for the survival of a plant under harsh environmental conditions (i.e., flooding, salt stress, and other abiotic stresses) as well ...
Peter Anargyrou Roussos
doaj   +1 more source

Biologically Relevant Small Radicals

open access: yesCHIMIA, 2008
Biologically relevant small radicals are at the focus of the working group 4 (WG4) of the COST Action CM0603 (Free Radicals in Chemical Biology, CHEMBIORADICAL). This article surveys the areas of research being undertaken by the partners in WG4.
Georg Bauer   +10 more
doaj   +1 more source

Dangers of hyperoxia

open access: yesCritical Care, 2021
Oxygen (O2) toxicity remains a concern, particularly to the lung. This is mainly related to excessive production of reactive oxygen species (ROS). Supplemental O 2 , i.e. inspiratory O2 concentrations (FIO2) > 0.21 may cause hyperoxaemia (i.e.
Mervyn Singer   +7 more
doaj   +1 more source

Juggling with reactive oxygen species and antioxidant defense system – A coping mechanism under salt stress

open access: yesPlant Stress, 2022
Even under optimal conditions many metabolic processes produce ROS like superoxide anion (O2.-), hydrogen peroxide (H2O2) and hydroxyl radicals (OH⋅), particularly in chloroplast and mitochondria.
Divya Singh
doaj   +1 more source

Teaching the basics of redox biology to medical and graduate students: Oxidants, antioxidants and disease mechanisms

open access: yesRedox Biology, 2013
This article provides a succinct but limited overview of the protective and deleterious effects of reactive oxygen and nitrogen species in a clinical context.
Balaraman Kalyanaraman
doaj   +1 more source

Interplay between oxidant species and energy metabolism

open access: yesRedox Biology, 2016
It has long been recognized that energy metabolism is linked to the production of reactive oxygen species (ROS) and critical enzymes allied to metabolic pathways can be affected by redox reactions. This interplay between energy metabolism and ROS becomes
Celia Quijano   +3 more
doaj   +1 more source

Effects of Antimony on Reactive Oxygen and Nitrogen Species (ROS and RNS) and Antioxidant Mechanisms in Tomato Plants

open access: yesFrontiers in Plant Science, 2020
This research studies the effects that Sb toxicity (0.0, 0.5, and 1.0 mM) has on the growth, reactive oxygen and nitrogen species, and antioxidant systems in tomato plants.
Francisco L. Espinosa-Vellarino   +4 more
doaj   +1 more source

What Did We Accomplish in Fighting Radical Species in Human Health?

open access: yesAntioxidants, 2021
Maintaining the physiological level of reactive oxygen species (ROS) and reactive nitrogen species (RNS) in the body is highly important in the fight against radical species in the context of human health [...]
Rachid Skouta
doaj   +1 more source

Biological aspects of reactive nitrogen species

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1999
Nitric oxide (NO) plays an important role as a cell-signalling molecule, anti-infective agent and, as most recently recognised, an antioxidant. The metabolic fate of NO gives rise to a further series of compounds, collectively known as the reactive nitrogen species (RNS), which possess their own unique characteristics.
Patel, Rakesh P.   +6 more
openaire   +2 more sources

Medical Gas Plasma Jet Technology Targets Murine Melanoma in an Immunogenic Fashion

open access: yesAdvanced Science, 2020
Medical technologies from physics are imperative in the diagnosis and therapy of many types of diseases. In 2013, a novel cold physical plasma treatment concept was accredited for clinical therapy.
Sander Bekeschus   +5 more
doaj   +1 more source

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