Results 11 to 20 of about 5,246,984 (361)
Reactive oxygen species, toxicity, oxidative stress, and antioxidants: chronic diseases and aging
Archives of Toxicology, 2023 A physiological level of oxygen/nitrogen free radicals and non-radical reactive species (collectively known as ROS/RNS) is termed oxidative eustress or “good stress” and is characterized by low to mild levels of oxidants involved in the regulation of ...
K. Jomová +6 more
semanticscholar +1 more source
The ‘oxygen’ in oxygen minimum zones
Environmental Microbiology, 2022 Abstract Aerobic processes require oxygen, and anaerobic processes are typically hindered by it. In many places in the global ocean, oxygen is completely removed at mid‐water depths forming anoxic oxygen minimum zones (A‐OMZs).
Canfield, Donald E.; id_orcid 0000-0001-7602-8366 +1 more
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Oxygen metabolism and oxygenation of the newborn [PDF]
Seminars in Fetal and Neonatal Medicine, 2020 The premature infant is to some extent protected from hypoxia, however defense against hyperoxia is poorly developed. The optimal assessment of oxygenation is to measure oxygen delivery and extraction. At the bedside PaO2 and SpO2 are approximations of oxygenation at the tissue level.
Andresen, Jannicke Hanne +1 more
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Oxygen, 2022 Hydrogen gas (molecular hydrogen, H2) has significant effects in a range of organisms, from plants to humans. Many inert gases have been reported to have similar effects, and such responses may be most pronounced when cells are stressed.
John T. Hancock +5 more
doaj +1 more source
An oxygen-reducing biocathode with “oxygen tanks” [PDF]
Chemical Communications, 2020 Polytetrafluoroethylene submicro-rod, serving as “oxygen tanks” and binders, have been mixed into Os redox polymer-based bilirubin oxidase cathodes, leading to enhanced performance.
Xinxin Xiao +2 more
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Oxygen, 2022 Gas embolism is a potentially fatal occurrence in which bubbles are introduced into the arterial/venous circulation. A multifocal ischemia could be the life-threatening scenario of that and occurring after diving-related activities, or pulmonary ...
Vincenzo Zanon +3 more
doaj +1 more source
RONS and Oxidative Stress: An Overview of Basic Concepts
Oxygen, 2022 Oxidative stress (OS) has greatly interested the research community in understanding damaging processes occurring in cells. OS is triggered by an imbalance between reactive oxygen species (ROS) production and their elimination by the antioxidant system ...
Ana Karina Aranda-Rivera +4 more
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Oxygen, 2023 Globally, among different types of cancers, breast cancer is identified as the chief cause of mortality among females, and it is a challenge to find new effective treatment strategies with minimal side effects and increased efficacy.
Monoj Kumar Das +2 more
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The oxygen trail: tissue oxygenation [PDF]
British Medical Bulletin, 1999 Aerobic cellular respiration depends on the efficient supply of oxygen and substrate to the mitochondria. There is an oxygen cascade from the environment to the subcellular environment. Efficient oxygen delivery depends on the coordinated interaction between the respiratory and circulatory systems.
A T, Nathan, M, Singer
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Oxygen, 2023 Blood flow restriction (BFR) may become ineffective or potentially dangerous without sufficient standardization. The purpose of this investigation was therefore to (1) assess the viability of multiple sizes of a novel BFR cuff to determine arterial ...
Steven B. Machek +5 more
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