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1 sty 2015 · The reasons causing an oxidative stress mainly include: (i) an imbalance between ROS generation and detoxification due to disturbance of ‘normal’ cell physiology; (ii) ROS biosynthesis de novo as a constituent part of stress signaling and immunity response needed for defence and adaptation.
3 cze 2020 · Schematic model of cross-talk between reactive oxygen species (ROS) and reactive nitrogen species (RNS) in plant responses to abiotic stress. Different abiotic stress situations can generate an uncontrolled production of ROS and RNS that oxidatively modify different biomolecules (proteins, lipids and nucleic acids).
1 sty 2023 · The accumulation of reactive oxygen species (ROS) caused by abiotic or biotic stresses generates oxidative stress in plant cells. To prevent the spread or to stop this chain reaction, antioxidant systems are activated, transforming free radicals (oxidants) into less toxic molecules for the cells.
6 sie 2019 · Oxidative stress is produced by increasing the number of reactive oxygen species or free radicals, which results in early aging, increased permeability, ions leakage from the cell membranes,...
19 sie 2023 · Increased levels of ROS/RNS, generated from both endogenous (mitochondria, NADPH oxidases) and/or exogenous sources (radiation, certain drugs, foods, cigarette smoking, pollution) result in a harmful condition termed oxidative stress (“bad stress”).
1 lis 2021 · High levels of oxygen free radicals (ROS) can affect bone tissue promoting its catabolism. Aging, fractures, biomaterial implantation and body response are sources of ROS. The modulation of ROS levels can improve bone biomaterial integration. Emerging strategies for modulating ROS levels and support bone regeneration.
28 lut 2017 · Here we present a review of the extrinsic and intrinsic factors that influence oxidative processes in fish, using a comparative and evolutionary approach. We demonstrate that oxidative stress plays a key role in shaping fish's responses to environmental change as well as life history strategies.
