Results 291 to 300 of about 497,025 (343)
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Environmental Science and Technology
Tire wear particles (TWPs) have caused increasing concerns due to their detrimental effects on the soil ecosystem. However, the role of weathering in altering the toxicity of TWP to soil organisms is poorly understood.
Long Chen +6 more
semanticscholar +1 more source
Tire wear particles (TWPs) have caused increasing concerns due to their detrimental effects on the soil ecosystem. However, the role of weathering in altering the toxicity of TWP to soil organisms is poorly understood.
Long Chen +6 more
semanticscholar +1 more source
Spaceflight Downregulates Antioxidant Defense Systems in Rat Liver
Free Radical Biology and Medicine, 1998Liver antioxidant enzyme activities, mRNA abundance, and glutathione (GSH) status were investigated in male Sprague-Dawley rats placed in an enclosure module aboard Space Shuttle STS-63 for 8 d (F, n = 6). F animals were compared to rats housed in an enclosure module on the ground (G, n = 9), which simulated the vibration and temperature conditions ...
J, Hollander +6 more
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Innate antioxidant defense systems in the respiratory tract
BioFactors, 2001Besides the skin, the respiratory tract is the major organ that is continuously exposed to the external environment. As such, this organ is continuously challenged by a wide variety of exogenous hazards (gaseous air pollutants, cigarette smoke, exhaust particles, allergens, pathogens, etc.) that threaten normal lung function.
A, van der Vliet, C E, Cross
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Nutritional influence on cellular antioxidant defense systems
The American Journal of Clinical Nutrition, 1979Oxygen is necessary for normal metabolic reactions, but it can also react with cellular components to cause degradation or inactivation of important molecules. The susceptibility of a given tissue to oxidative stress is a function of overall balance between the degree of stress and the antioxidant defense capability.
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Analysis of antioxidant defense systems during rat heptacarcinogenesis
Carcinogenesis, 1988To better understand the role of free radicals in liver carcinogenesis, endogenous antioxidant defense systems and the susceptibility of membranes to lipid peroxidation were evaluated in early lesions and in malignant tumors induced by the Solt-Farber resistant hepatocyte protocol.
T K, Vo +4 more
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Advances in Materials, 2019
Bismuth (Bi)‐based nanomaterials (NMs) are widely used for computed tomography (CT) imaging guided photothermal therapy, however, the photodynamic property is hardly exhibited by these NMs due to the fast electron–hole recombination within their narrow ...
Yan Cheng +7 more
semanticscholar +1 more source
Bismuth (Bi)‐based nanomaterials (NMs) are widely used for computed tomography (CT) imaging guided photothermal therapy, however, the photodynamic property is hardly exhibited by these NMs due to the fast electron–hole recombination within their narrow ...
Yan Cheng +7 more
semanticscholar +1 more source
ACS Applied Materials & Interfaces, 2017
Cells were continuously exposed to oxidative damage by overproduction of reactive oxygen species (ROS) when they contacted implanted biomaterials. The strategy to prevent cells from oxidative injures remains a challenge. Inspired by the antioxidant defense system of cells, we constructed a biocompatible and ROS-responsive architecture on the substrate ...
Haozheng Wang +8 more
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Cells were continuously exposed to oxidative damage by overproduction of reactive oxygen species (ROS) when they contacted implanted biomaterials. The strategy to prevent cells from oxidative injures remains a challenge. Inspired by the antioxidant defense system of cells, we constructed a biocompatible and ROS-responsive architecture on the substrate ...
Haozheng Wang +8 more
openaire +2 more sources
Antioxidant defense system in rats simultaneously intoxicated with agrochemicals
Environmental Toxicology and Pharmacology, 2009The effect of dimethoate, zineb and glyphosate administered alone or in combination on liver, kidney, brain and plasma antioxidant defense system was investigated. Lipid peroxidation, and RNS production were increased in all tissues studied, especially in those groups that received a combination of drugs.
Mariana, Astiz +2 more
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