Insulin resistance and diabetes in hyperthyroidism: a possible role for oxygen and nitrogen reactive species

2019 ◽  
Vol 53 (3) ◽  
pp. 248-268 ◽  
Author(s):  
Paola Venditti ◽  
Tanea T. Reed ◽  
Victor M. Victor ◽  
Sergio Di Meo
Keyword(s):  
Insulin Resistance ◽  
Reactive Species ◽  
Nitrogen Reactive Species

Relevance of mitochondrial dysfunction during Sorafenib-induced cell death in liver cancer cells. Role of oxidative and nitrogen reactive species

2021 ◽  
Vol 165 ◽  
pp. 54
Author(s):  
Patricia de la Cruz-Ojeda ◽  
M. Ángeles Rodríguez-Hernández ◽  
Elena Navarro-Villarán ◽  
Paloma Gallego ◽  
Pavla Staňková ◽  
...  
Keyword(s):  
Cell Death ◽  
Liver Cancer ◽  
Mitochondrial Dysfunction ◽  
Cancer Cells ◽  
Reactive Species ◽  
Liver Cancer Cells ◽  
Nitrogen Reactive Species

Interaction of surfactant mixtures with reactive oxygen and nitrogen species

1995 ◽  
Vol 78 (5) ◽  
pp. 1800-1805 ◽  
Author(s):  
J. Cifuentes ◽  
J. Ruiz-Oronoz ◽  
C. Myles ◽  
B. Nieves ◽  
W. A. Carlo ◽  
...  
Keyword(s):  
Lung Surfactant ◽  
Alveolar Epithelium ◽  
Reactive Species ◽  
Surfactant Mixtures ◽  
Surfactant Deficiency ◽  
High Lipid ◽  
Fenton Reagents ◽  
Protein Sulfhydryl ◽  
Nitrogen Reactive Species ◽  
Protein Sulfhydryl Groups

Increased concentrations of partially reduced oxygen and nitrogen reactive species damage the alveolar epithelium and either cause or exacerbate surfactant deficiency. For this reason, there is a quest to identify surfactant replacement mixtures, which in addition to repleting depleted surfactant stores can also reduce the steady-state concentrations of reactive species in the alveolar space. Herein, we evaluated the ability of natural lung surfactant (NLS) and two mixtures (Exosurf and Survanta) used clinically for the correction of surfactant deficiency to scavenge hydroxyl radical-type species (.OH), generated either by the decomposition of peroxynitrite or by Fenton reagents (FeCl3 + H2O2). Exosurf or Survanta decreased .OH only when present at high lipid concentrations (6.5 mM). On the other hand, 40 microM of NLS decreased .OH concentrations from 75 +/- 2 to 53 +/- 2 microM (P < 0.05), most likely because of the interaction of .OH with protein sulfhydryl groups. Similarly, 40 microM of NLS incubated with a bolus of H2O2 (400 microM) decreased the H2O2 concentration in the supernatant by approximately 50%, due to the presence of catalase-type activity. In contrast to NLS, neither Exosurf nor Survanta scavenged H2O2, even when present at millimolar lipid concentrations. We concluded that Exosurf and Survanta contain limited antioxidant activity compared with NLS.

Ti4O7 Used as Electrode in Biomedicine and for Electrochemical Study of Scavenging Mechanism

2011 ◽  
Vol 493-494 ◽  
pp. 896-901
Author(s):  
María Canillas ◽  
Ann Rajnicek ◽  
C. Rosero ◽  
Eva Chinarro ◽  
Berta Moreno
Keyword(s):  
Oxidation State ◽  
Reactive Species ◽  
Electrochemical Methods ◽  
Electrochemical Study ◽  
Scavenging Activity ◽  
Reduction Reactions ◽  
Oxidation Reduction ◽  
Nitrogen Reactive Species

The biocompatibility of TiO2 is due to the activity that it shown in front of oxygen and nitrogen reactive species. Some authors suggest that the mechanism go through oxidation reduction reactions where changes of oxidation state in the Titanium and phases are involve. For this reason, Anderson-Magnelli phases could present scavenging activity. Moreover, these materials are use as electrodes and in that way are proposed as electrodes for study their scavenging mechanism by electrochemical methods.

Oxygen and Nitrogen Reactive Species Are Effectively Scavenged by Eucalyptus globulus Leaf Water Extract

2009 ◽  
Vol 12 (1) ◽  
pp. 175-183 ◽  
Author(s):  
Isabel F. Almeida ◽  
Eduarda Fernandes ◽  
José L.F.C. Lima ◽  
Patrícia Valentão ◽  
Paula B. Andrade ◽  
...  
Keyword(s):  
Eucalyptus Globulus ◽  
Water Extract ◽  
Reactive Species ◽  
Leaf Water ◽  
Nitrogen Reactive Species

scholarly journals Chalcones <em>versus</em> 2-styrylchromones: Which are the best oxygen and nitrogen reactive species scavengers?

2021 ◽  
Author(s):  
Ricardo Monteiro ◽  
Daniela Ribeiro ◽  
Mariana Lucas ◽  
Marisa Freitas ◽  
Catarina Correia ◽  
...  
Keyword(s):  
Reactive Species ◽  
Nitrogen Reactive Species

scholarly journals In VitroProtective Effect ofHypericum androsaemumExtract Against Oxygen and Nitrogen Reactive Species

2009 ◽  
Vol 105 (4) ◽  
pp. 222-227 ◽  
Author(s):  
Isabel F. Almeida ◽  
Eduarda Fernandes ◽  
José L.F.C. Lima ◽  
Paulo Cardoso Costa ◽  
Maria Fernanda Bahia
Keyword(s):  
Reactive Species ◽  
Nitrogen Reactive Species
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