Results 41 to 50 of about 1,166,114 (226)

Manipulation of environmental oxygen modifies reactive oxygen and nitrogen species generation during myogenesis [PDF]

open access: yes, 2016
Regulated changes in reactive oxygen and nitrogen species (RONS) activities are important in maintaining the normal sequence and development of myogenesis. Both excessive formation and reduction in RONS have been shown to affect muscle differentiation in
Abdelmoity   +32 more
core   +2 more sources

Selective generation of reactive oxygen species in plasma activated water using CO2 plasma [PDF]

open access: yesarXiv, 2022
In the present work, a process of a selective generation of reactive oxygen species (ROS) such as H2O2 and dissolved O3 in plasma-activated water (PAW) is discussed. For selective ROS generation, pure CO2 was used as a plasma-forming gas. The gases species present in plasma and properties of PAW are compared in details when CO2 and air are used as ...
arxiv  

Reactive oxygen species in periodontitis

open access: yesJournal of Indian Society of Periodontology, 2013
Recent epidemiological studies reveal that more than two-third of the world′s population suffers from one of the chronic forms of periodontal disease. The primary etiological agent of this inflammatory disease is a polymicrobial complex, predominantly ...
Parveen Dahiya   +5 more
doaj   +1 more source

Reactive oxygen species, apoptosis and cancer [PDF]

open access: yesVojnosanitetski Pregled, 2013
Projekat Ministarstva nauke Republike Srbije, br ...
Stojnev Slavica   +2 more
doaj   +1 more source

DFT Investigation of pH-Driven Oxygen Vacancy Formation-Annihilation in CeO2 [PDF]

open access: yesarXiv, 2021
There is considerable interest in the pH-dependent switchable biocatalytic properties of cerium oxide nanoparticles (CeNPs) in biomedicine, where these materials exhibit beneficial antioxidant activity against reactive oxygen species at neutral and basic physiological pH but cytotoxic prooxidant activity at acidic pathological pH. Oxygen vacancies play
arxiv  

Implications of Abiotic Oxygen Buildup for Earth-like Complex Life [PDF]

open access: yesThe Astronomical Journal, Vol. 159, No. 4, 144 (2020), 2020
One of the chief paradoxes of molecular oxygen (O$_2$) is that it is an essential requirement for multicellular eukaryotes on Earth while simultaneously posing a threat to their survival via the formation of reactive oxygen species. In this paper, the constraints imposed by O$_2$ on Earth-like complex life are invoked to explore whether worlds with ...
arxiv   +1 more source

Radical pairs may explain reactive oxygen species-mediated effects of hypomagnetic field on neurogenesis [PDF]

open access: yesarXiv, 2021
Exposures to a hypomagnetic field can affect biological processes. Recently, it has been observed that hypomagnetic field exposure can adversely affect adult hippocampal neurogenesis and hippocampus-dependent cognition in mice. In the same study, the role of reactive oxygen species (ROS) in hypomagnetic field effects has been demonstrated. However, the
arxiv  

The formation of atomic oxygen and hydrogen in atmospheric pressure plasmas containing humidity: picosecond two-photon absorption laser induced fluorescence and numerical simulations [PDF]

open access: yesPlasma Sources Sci. Technol. 29 (2020) 105001, 2020
Atmospheric pressure plasmas are effective sources for reactive species, making them applicable for industrial and biomedical applications. We quantify ground-state densities of key species, atomic oxygen (O) and hydrogen (H), produced from admixtures of water vapour (up to 0.5%) to the helium feed gas in a radio-frequency-driven plasma at atmospheric ...
arxiv   +1 more source

Cigarette Smoke Initiates Oxidative Stress-Induced Cellular Phenotypic Modulation Leading to Cerebral Aneurysm Pathogenesis. [PDF]

open access: yes, 2018
OBJECTIVE: Cigarette smoke exposure (CSE) is a risk factor for cerebral aneurysm (CA) formation, but the molecular mechanisms are unclear. Although CSE is known to contribute to excess reactive oxygen species generation, the role of oxidative stress on ...
Ali, Muhammad S.   +12 more
core   +2 more sources

Effects of reactive oxygen species on skin photoaging

open access: yesPrzegląd Dermatologiczny, 2016
The large surface area of the skin, high metabolism and location at the border of two environments (external and internal) cause continuous production of free radicals within the skin. There are two mechanisms of skin photoaging.
Anna M. Augustyniak   +3 more
doaj   +1 more source

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