Reactive Oxygen Intermediates
Mostrando 1-12 de 179 artigos, teses e dissertações.
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1. Association of recurrent upper respiratory tract infections with low production of oxygen intermediates in children
Abstract Objectives: Upper respiratory tract infections in children generally have significant morbidity and mortality. There is little data available about functional immaturity of the immune system and the child’s susceptibility to infections at the beginning of their lives, thus, justifying a more specific immunological analysis. Method: Analysis of h
Jornal de Pediatria. Publicado em: 2022
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2. Medicinal Electrochemistry of Halogenated and Nitrated Pterocarpanquinones
Electrochemical methods are considered useful tools for simulations of biological redox reactions. The activities of quinones depend on their bioreduction. Biologically active pterocarpanquinones LQB-149 (nitroderivative), 150 and 151 (bromo and chloroderivatives, respectively) were electrochemically investigated by cyclic voltammetry, differential pulse vol
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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3. Conus vexillum venom induces oxidative stress in Ehrlich's ascites carcinoma cells: an insight into the mechanism of induction
Background It is estimated that venoms of marine cone snails (genus Conus) contain more than 100,000 different small peptides with a wide range of pharmacological and biological actions. Some of these peptides were developed into potential therapeutic agents and as molecular tools to understand biological functions of nervous and cardiovascular systems. In
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 01/05/2013
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4. Ação do etileno e de intermediários reativos de oxigênio sobre o crescimento de ápices radiculares em dois genótipos de milho, na presença de alumínio / Action of ethylene and reactive oxygen intermediates on growth in root tips in two maize genotypes, in the presence of aluminum
O objetivo principal deste estudo foi avaliar a ação de etileno e de intermediários reativos de oxigênio (ROIs) na inibição do crescimento radicular causada por Al, em ápices radiculares de dois genótipos de milho. Nos experimentos foram utilizados os genótipos de milho UFVM 100 (sensível) e UFVM 200 (tolerante), submetidos aos tratamentos com Al n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/05/2011
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5. Crescimento, morfologia e mudanças no sistema antioxidativo em raízes de arroz, submetidas ao alumínio / Growth, morphology and changes in the antioxidative system in roots of rice, submitted to the aluminum
Em solos ácidos, a toxicidade do alumínio (Al) é um dos principais fatores que limita o crescimento e o desenvolvimento das plantas. A exposição de plantas a níveis tóxicos desse elemento pode elevar a produção de espécies reativas de oxigênio (ROS) e, consequentemente, induzir estresse oxidativo. Para evitar o acúmulo excessivo de ROS, as planta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/04/2011
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6. Anti-Helicobacter pylori activity and oxidative burst inhibition by the naphthoquinone 5-methoxy-3,4-dehydroxanthomegnin from Paepalanthus latipes
Helicobacter pylori is a bacterium recognized as the major cause of chronic gastritis and peptic ulcers. Infection by H. pylori induces inflammatory responses and pathological changes in the gastric microenvironment. The host Keywords: immune cells (especially neutrophils) release inflammatory mediators and large 5-methoxy-3,4-dehydroxanthomegnin amounts of
Revista Brasileira de Farmacognosia. Publicado em: 21/10/2011
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7. Composto homeopático reduz a liberação de ânion superóxido pelas células mononucleares de ema (Rhea americana)
The action of the "Stress Factor Ostrich (Arenales - Fauna and Flora)" was tested in the release of superoxide anion by cells in the peripheral blood of rhea (Rhea americana). Sixteen samples of 0.5mL of venous blood were collected through the jugular vein in the morning and placed in heparinized tubes. The leukocytes were separated into polymorphonuclear (P
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2011-10
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8. Production of reactive oxygen (H2O2) and nitrogen (NO) intermediates and TNF-α in mice genetically selected for high (H) and low (L) antibody response and experimentally infected with Leptospira serovar pomona
The aim of the present study was to evaluate the activity of macrophages, and the production of TNF-α and antibodies against experimental infection by Leptospira serovar Pomona in mice genetically selected for High (H) or Low (L) humoral immune response. To evaluate macrophagic activity, peritoneal and splenic lavages were performed for determination of oxy
Brazilian Journal of Microbiology. Publicado em: 2011-06
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9. Angiotensin II induces NF-κB, JNK and p38 MAPK activation in monocytic cells and increases matrix metalloproteinase-9 expression in a PKC- andRho kinase-dependent manner
Angiotensin II (ANG II), the main effector of the renin-angiotensin system, is implicated in endothelial permeability, recruitment and activation of the immune cells, and also vascular remodeling through induction of inflammatory genes. Matrix metalloproteinases (MMPs) are considered to be important inflammatory factors. Elucidation of ANG II signaling pathw
Braz J Med Biol Res. Publicado em: 2011-03
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10. Interferon-gamma effect on splicing defects that cause chronic granulomatous disease linked to X chromosome. / Efeito do interferon-gamma sobre defeitos de "splicing" que levam à doença granulomatosa crônica ligada ao cromossomo X.
Phagocytes have a nicotinamide adenine dinucleotide phosphate-oxidase (NADPH) associated to plasmatic membrane that generates superoxide and other oxygen reactive intermediates. Defects on this oxidase in humans result in a disorder called Chronic Granulomatous Disease (CGD). Mutations next to splicing sites that interfere with the mRNA processing leading to
Publicado em: 2009
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11. Response activity of alveolar macrophages in pulmonary dysfunction caused by Leptospira infection
Leptopspirosis is a syndrome with different clinical manifestations including the most severe and often fatal forms of pulmonary disease of unknown etiology. Pulmonary injury during the inflammatory process has been associated with the excessive number of alveolar macrophages (AMs) and polymorphonuclear leukocytes stimulated in the lungs and with the product
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2008
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12. Efeito de cimentos obturadores endodônticos sobre a atividade de macrófagos M1 e M2
Root canal sealers are brought into contact with periapical tissues when finishing endodontic therapy, even when they are not severely extruded through root canal orifices. Therefore, their biological properties are considered to be important. Macrophages have a central role in both innate immunity and adoptive responses. Recent studies have revealed that th
Publicado em: 2007