Oxygen Scavenger
Mostrando 1-12 de 114 artigos, teses e dissertações.
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1. Antioxidant Effect of Curcumin on the Prevention of Oxidative Damage to the Cochlea in an Ototoxic Rat Model Based on Malondialdehyde Expression
Abstract Introduction Aminoglycoside, as an antimicrobial medication, also has side-effects on the inner ears, bringing about hearing disorders. Curcumin has been proven to be a strong scavenger against various reactive oxygen species (ROS), and the increase in ROS production is considered to play an important role in the process of hearing disorder. Objec
International Archives of Otorhinolaryngology. Publicado em: 2022
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2. Reduction of Aqueous Ag+ Steered by Electrochemical Plasma: Connecting the Bulk pH Variation with the Reaction Pathways for Hydrated Electrons
Reduction of silver cations followed by nanoparticle (Ag-NPs) synthesis is a model process to understand the reduction mechanism induced by a discharge over an aqueous surface, termed electrochemical plasma. This work aims at studying the silver reduction reaction steered by electrochemical plasma in the presence of other chemically active plasma-related int
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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3. Hydrogen sulfide protects H9c2 cardiomyoblasts against H2O2-induced apoptosis
Reactive oxygen species (ROS) are highly reactive chemical species that may cause irreversible tissue damage, and play a critical role in cardiovascular diseases. Hydrogen sulfide (H2S) is a gasotransmitter that acts as a ROS scavenger with cardio-protective effects. In this study, we investigated the cytoprotective effect of H2S against H2O2-induced apoptos
Braz J Med Biol Res. Publicado em: 15/04/2019
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4. Comparison of therapeutic effects of L-Thyroxin, apelin and a combination of both on antioxidant enzymes in the heart of PTU-induced hypothyroid rats
Atherosclerosis is one of the common disorders among hypothyroidism, which, increased the risk of cardiovascular diseases. Reactive oxygen species are associated with atherosclerosis development. Antioxidant defense systems are the scavenger for free radicals. Apelin is an endogenous ligand for the APJ receptor (apelin receptor) that exists in most tissues,
Braz. arch. biol. technol.. Publicado em: 22/03/2016
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5. ATIVIDADE ANTIOXIDANTE in vitro DO EXTRATO ETANÓLICO DAS FOLHAS DE Luehea divaricata Mart. / In vitro ANTIOXIDANT ACTIVITY OF THE ETHANOLIC EXTRACT OF Luehea divaricata Mart. LEAVES
O estresse oxidativo tem sido relacionado a algumas desordens neurodegenerativas. As terapias atuais para essas doenças estão limitadas a atenuar os sintomas apresentados, entretanto alguns estudos têm mostrado que compostos antioxidantes podem ser capazes de prevenir ou retardar o dano oxidativo neuronal, incluindo aqueles presentes em extratos vegetais.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2012
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6. Putative benefits of microalgal astaxanthin on exercise and human health
Astaxanthin (ASTA) is a pinkish-orange carotenoid produced by microalgae, but also commonly found in shrimp, lobster and salmon, which accumulate ASTA from the aquatic food chain. Numerous studies have addressed the benefits of ASTA for human health, including the inhibition of LDL oxidation, UV-photoprotection and prophylaxis of bacterial stomach ulcers. AS
Revista Brasileira de Farmacognosia. Publicado em: 22/04/2011
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7. Antioxidant activity of natural compounds of Stachytarpheta cayennensis (Rich.) Vahl, Verbenaceae, by scavenger of mitochondrial reactive oxygen species
The etiology of a range of diseases is associated with an excessive generation of reactive oxygen species (ROS). Exacerbated ROS production leads to mitochondrial dysfunction, cellular damage and apoptosis. Nowadays, many strategies are being developed for the targeted delivery of antioxidants compounds to mitochondria, trying to minimize the damages. Produc
Revista Brasileira de Farmacognosia. Publicado em: 01/04/2011
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8. The therapeutic effect of a pulsed electromagnetic field on the reproductive patterns of male Wistar rats exposed to a 2.45-GHz microwave field
INTRODUCTION: Environmental exposure to man-made electromagnetic fields has been steadily increasing with the growing demand for electronic items that are operational at various frequencies. Testicular function is particularly susceptible to radiation emitted by electromagnetic fields. OBJECTIVES: This study aimed to examine the therapeutic effects of a puls
Clinics. Publicado em: 2011
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9. Modulação da adesão plaquetaria de ratos tratados com lipopolissacarideo por especies reativas de oxigenio e nitrogenio / Reactive oxygen and nitrogen species modulate the ex-vivo effects of LPS on platelet adhesion to fibrinogen
Platelets are known as hemostatic regulators, but multiple studies have shown that platelets are important in inflammatory reactions including sepsis. Lipopolysaccharide (LPS) is a component of the outer membrane of Gram negative bacteria and has a pivotal role in inducing Gram negative sepsis. LPS triggers the production of various substances including nitr
Publicado em: 2010
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10. Iron-limited condition modulates biofilm and adhesive porpoerties in enteroaggregative Escherichia coli / Influência da limitação de ferro nas propriedades adesivas e na formação de biofilme de Escherichia coli enteroagregativa (EAEC)
Escherichia coli enteroaggregative (EAEC) can cause persistent or acute diarrhea. It is characterized by the aggregative adherence pattern on HEp-2 cells, with the presence of bacteria aggregates like stacked bricks. Many strains have the capacity to produce siderophores, low-molecular-mass compounds that capture iron under conditions of low concentration of
Publicado em: 2009
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11. Geração de espécies reativas por exossomos plaquetários: um possível novo mecanismo de disfunção vascular na sepse / Generation of reactive oxygen species by platelet-derived exosomes: a possible novel mechanism of vascular dysfunction in sepsis
Sepsis, the bodys response to infection, is associated with high mortality rates. Why a protective mechanism turns into a deadly clinical picture is a matter of debate, and goes largely unexplained. In previous work we demonstrated that plateled derived exosomes are found in the plasma of septic patients with septic shock and can induce endothelial and vascu
Publicado em: 2009
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12. Desenvolvimento e caracterização de sache absorvedor de oxigenio para uso em embalagens alimenticias / Development and characterization of oxygen scavenger sachets for use in food
The present work consist of the development of an iron based oxygen scavenger sachet recommended to be used in active packaging of processed meat, such as "Jerked beef", in order to extend the shelf life of this category of food product. It was conducted a partial characterization of the content of the commercial sachets O-Buster and Oxyfree 504 A by using S
Publicado em: 2008