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Human monocytes tolerant to LPS retain the ability to phagocytose bacteria and generate reactive oxygen species
(Associação Brasileira de Divulgação Científica, 2010-09-01)
Tolerance to lipopolysaccharide (LPS) occurs when animals or cells exposed to LPS become hyporesponsive to a subsequent challenge with LPS. This mechanism is believed to be involved in the down-regulation of cellular ...
Does cotinine act upon reactive oxygen species and peroxidases?
(2007-06-19)
Nicotine, an oxidizing agent, is certainly one of the most widely used alkaloids in the world. It is, together with its main metabolite, cotinine, responsible for tobacco-dependence. The use of tobacco is closely associated ...
Effect of natural porcine surfactant in Staphylococcus aureus induced pro-inflammatory cytokines and reactive oxygen species generation in monocytes and neutrophils from human blood
(Elsevier B.V., 2014-08-01)
Surfacen (R) is a clinical surfactant preparation of porcine origin. in the present study, we have evaluated the effect of Surfacen (R) in the modulation of oxidative burst in monocytes and neutrophils in human blood and ...
Espécies reativas do oxigênio e as doenças respiratórias em grandes animais
(Universidade Federal de Santa Maria (UFSM), 2010-04-01)
As espécies reativas do oxigênio (ERO) são moléculas instáveis e extremamente reativas capazes de transformar outras moléculas com as quais colidem. As ERO são geradas em grande quantidade durante o estresse oxidativo, ...
GENERATION of NITRIC OXIDE and REACTIVE OXYGEN SPECIES BY NEUTROPHILS and MONOCYTES FROM SEPTIC PATIENTS and ASSOCIATION WITH OUTCOMES
(Lippincott Williams & Wilkins, 2012-07-01)
In this study, our aims were to evaluate the reactive oxygen species (ROS) and nitric oxide (NO) generation by monocytes and neutrophils from septic patients and to correlate their levels with clinical outcomes. Forty-nine ...
Lipid peroxidation and generation of hydrogen peroxide in frozen-thawed ram semen supplemented with catalase or Trolox
(Elsevier B.V., 2011-02-01)
Semen manipulation and cryopreservation-thaw procedures may accelerate the generation of reactive oxygen species (ROS). Sperm exposure to large amounts of ROS has been shown to cause membrane lipid peroxidation and cellular ...
Nitric oxide reduces oxidative stress generated by lactofen in soybean plants
(Academic Press Inc. Elsevier B.V., 2010-05-01)
Nitric oxide (NO) is a molecule able to directly scavenge ROS and end chain reactions, which can be generated by some herbicides This study aimed to evaluate whether the pretreatment of soybean plants with sodium nitroprusside ...
The induction of cytotoxicity, oxidative stress, and genotoxicity by root canal sealers in mammalian cells
(Mosby-elsevier, 2009-12-01)
Objective. Toxicologic aspects of the root canal sealers Acroseal, Epiphany, AH Plus, and castor oil polymer (COP) were analyzed using cell culture techniques.Study design. Set materials were extracted in culture medium, ...
Angiotensin II-derived reactive oxygen species underpinning the processing of the cardiovascular reflexes in the medulla oblongata
(Springer, 2011-08-01)
The brainstem is a major site in the central nervous system involved in the processing of the cardiovascular reflexes such as the baroreflex and the peripheral chemoreflex. The nucleus tractus solitarius and the rostral ...