Browsing by Title Artículos de revistas

Now showing items 2103-2122 of 2801

    • Redox and complexation chemistry of the CrVI/CrV–d-galacturonic acid system 
      González, Juan; Daier, Verónica; García, Silvia; Goodman, Bernard; Atria Salas, Ana María; Sala, Luis; Signorella, Sandra (2004)
      The oxidation of D-galacturonic acid by Cr-VI yields the aldaric acid and Cr-III as final products when a 30-times or higher excess of the uronic acid over Cr-VI is used. The redox reaction involves the formation of ...
    • Redox behaviour of nifuroxazide: Generation of the one-electron reduction product 
      Squella Serrano, Juan; Letelier, M.; Lindermeyer, L.; Núñez Vergara, Luis (Elsevier Ireland Ltd, 1996)
      The electrochemical properties of nifuroxazide have been investigated in aqueous and aqueous-DMF mixed solvents. In aqueous media, a single, irreversible four-electron reduction occurs to give the hydroxylamine derivative. ...
    • Redox speciation analysis of antimony in soil extracts by hydride generation atomic fluorescence spectrometry 
      Fuentes Pérez, Edwar; Pinochet, Hugo; De Gregori, Ida; Potin-Gautier, Martine (PERGAMON-ELSEVIER SCIENCE LTD, 2003-07-18)
      A sensitive atomic spectrometric method for the redox speciation analysis of antimony in soils is described. The method is based on the selective generation of stibine from Sb(III) in a continuous flow system using atomic ...
    • Redox-active complexes formed during the interaction between glutathione and mercury and/or copper ions 
      Aliaga, Margarita E.; López Alarcón, Camilo; Barriga, Germán; Olea Azar, Claudio; Speisky Cosoy, Hernán (2010)
      Prompted by the recently reported capacity of the physiologically occurring Cu(I)-[glutathione]2 complex (Cu(I)-[GSH)]2) to reduce oxygen, the effect of various GSH-binding metals (Co2+, Cd2+, Zn2+, Pb2+, Al3+, Hg2+ and ...
    • Redox-changes associated with the glutathione-dependent ability of the Cu(II)-GSSG complex to generate superoxide 
      Aliaga, Margarita E.; López Alarcón, Camilo; García Río, Luis; Martín-Pastor, Manuel; Speisky Cosoy, Hernán (2012)
      The intracellularly-occurring Cu(I)-glutathione complex (Cu(I)-[GSH] 2) has the ability to reduce molecular oxygen into superoxide. Removal of such radicals leads to the irreversible conversion of Cu(I)-[GSH] 2 into the ...
    • Reduced graphene oxides: influence of the reduction method on the electrocatalytic effect towards nucleic ... 
      Báez, Daniela F.; Pardo, Helena; Laborda, Ignacio; Marco, José F.; Yañez Soto, Claudia; Bollo Dragnic, Soledad (MDPI, 2017)
      For the first time a critical analysis of the influence that four different graphene oxide reduction methods have on the electrochemical properties of the resulting reduced graphene oxides (RGOs) is reported. Starting from ...
    • Reduction of acrylamide formation in potato slices during frying 
      Pedreschi, Franco; Kaack, Karl; Granby, Kit (2004)
      Reduction of acrylamide formation in potato chips was investigated in relation to frying temperature and three treatments before frying. Potato slices (Tivoli variety, diameter: 37 mm, width: 2.2 mm) were fried at 150°C, ...
    • Reduction of different nitro-compounds on electroenzymatic system: Cytochrome c reductase-NAD(P)H modified ... 
      Merino, M.; Núñez Vergara, Luis; Squella Serrano, Juan (WILEY-V C H VERLAG GMBH, 1999-11)
      A flavoenzyme cytochrome c reductase NAD(P)H mixture has been used to modify a carbon paste electrode. The modified electrode was characterized by cyclic voltammetry varying the scan rate and temperature. Cathodic and ...
    • Refractance Window drying of goldenberry (Physalis peruviana L.) pulp: A comparison of quality characteristics ... 
      Puente L., Vega-Gálvez A., Ah-Hen K.S., Rodríguez A., Pasten A., Poblete J., Pardo-Orellana C., Muñoz M. (Academic Press, 2020)
    • Regioselectivity in the Diels-Alder reaction of 8,8-dimethylnaphthalene-1,4,5(8H)-trione with 2,4-hexadien-1-ol 
      Araya Maturana, Ramiro; Cassels Niven, Bruce; Delgado Castro, Tomás; Valderrama Guerrero, Jaime Adolfo; Weiss López, Boris (PERGAMON-ELSEVIER SCIENCE LTD, 1999-01-15)
      The Diels-Alder reactions of 8,8-dimethylnaphtalene-1,4,5(8H)-trione with 2,4-hexadien-1-ol and its O-acetyl derivative were investigated in different solvents. The regiochemistry of the cycloaddition of the hexadienol was ...
    • Regulation of autophagy by the inositol trisphosphate receptor 
      Criollo Céspedes, Alfredo; Maiuri, M. C.; Tasdemir, E.; Vitale, I.; Fiebig, A. A.; Andrews, D.; Molgó, Jordi; Díaz, J.; Lavandero González, Sergio; Harper, F.; Pierron, G.; di Stefano, D.; Rizzuto, R.; Szabadkai, G.; Kroemer, Guido (NATURE PUBLISHING GROUP, 2007-05)
      The reduction of intracellular 1,4,5-inositol trisphosphate (IP3) levels stimulates autophagy, whereas the enhancement of IP3 levels inhibits autophagy induced by nutrient depletion. Here, we show that knockdown of the ...
    • Regulation of Cardiac Autophagy by Insulin-like Growth Factor 1 
      Troncoso, Rodrigo; Díaz Elizondo, Jessica; Espinoza, Sandra P.; Navarro Márquez, Mario F.; Oyarzún, Alejandra P.; Riquelme, Jaime A.; García Carvajal, Ivonne; Díaz Araya, Guillermo; García Nannig, Lorena; Hill, Joseph A.; Lavandero González, Sergio (2013-07)
      Insulin-like growth factor-1 (IGF-1) signaling is a key pathway in the control of cell growth and survival. Three critical nodes in the IGF-1 signaling pathway have been described in cardiomyocytes: protein kinase ...
    • Regulation of cardiomyocyte autophagy by calcium 
      Shaikh, Soni; Troncoso Cotal, Rodrigo; Criollo Céspedes, Alfredo; Bravo Sagua, Roberto; García Nannig, Lorena; Morselli, Eugenia; Cifuentes, Mariana; Quest, Andrew F. G.; Hill, Joseph A.; Lavandero González, Sergio (Amer Physiological Soc, 2016)
      Calcium signaling plays a crucial role in a multitude of events within the cardiomyocyte, including cell cycle control, growth, apoptosis, and autophagy. With respect to calcium-dependent regulation of autophagy, ion ...
    • Regulation of Fe absorption by cultured intestinal epithelia (Caco-2) cell monolayers with varied Fe status 
      Tapia, Victoria; Arredondo, Miguel; Núñez González, Marco (1996)
      Body Fe homeostasis is maintained through the regulation of Fe absorption by the intestinal epithelia. Working under the hypothesis that the intracellular concentration of Fe is instrumental in the control of its transepithelial ...
    • Regulation of total LC3 levels by angiotensin II in vascular smooth muscle cells 
      Mondaca Ruff, David Gonzalo; Quiroga, Clara; Norambuena Soto, Ignacio Estebán; Riquelme Meléndez, Jaime Andrés; San Martin, Alejandra; Bustamante Parraguez, Mario Andrés; Lavandero González, Sergio Alejandro; Chiong Lay, Mario Martín (Wiley, 2022)
      Hypertension is associated with high circulating angiotensin II (Ang II). We have reported that autophagy regulates Ang II-induced vascular smooth muscle cell (VSMC) hypertrophy, but the mechanism mediating this effect is ...
    • Regulatory volume decrease in cardiomyocytes is modulated by calcium influx and reactive oxygen species 
      Rojas Rivera, Andrés; Díaz Elizondo, Jessica; Parra Ortíz, María Valentina; Salas, Daniela; Contreras Ferrat, Ariel Eduardo; Toro, Barbra; Chiong Lay, Mario; Olea Azar, Claudio; Lavandero González, Sergio (ELSEVIER SCIENCE BV, 2009-11-03)
      We investigated the role of Ca2+ in generating reactive oxygen species (ROS) induced by hyposmotic stress (Hypo) and its relationship to regulatory volume decrease (RVD) in cardiomyocytes. Hypo-induced increases in cytoplasmic ...
    • Relation between oxidative stress, catecholamines, and impaired chronotropic response to exercise in patients ... 
      Castro, Pablo; Greig, Douglas; Pérez, Osvaldo; Moraga, Francisco; Chiong Lay, Mario; Díaz Araya, Guillermo; Padilla, Ivonne; Nazzal Nazal, Carolina; Jalil Milad, Jorge; Vukasovic Ramírez, José Luis; Moreno, M.; Corbalán, Ramón; Lavandero González, Sergio (EXCERPTA MEDICA INC, 2003-07-15)
    • Relations between potential energy, electronic chemical potential, and hardness profiles 
      Cárdenas Jirón, G.; Gutiérrez Oliva, Soledad; Melin, Junia; Toro Labbé, Alejandro (American Chemical Society, 1997)
      In recent papers we defined a theoretical frame aimed at characterizing the hardness and potential energy profiles along a reduced reaction coordinate (omega) varying from 0 to 1. In this paper we generalize that model to ...
    • Relationship among the minor constituents, antibacterial activity and geographical origin of honey: A ... 
      Cebrero, Gonzalo; Sanhueza, Óscar; Pezoa, Matías; Báez Contreras, María E.; Martínez, Jessica; Báez Larach, Mauricio; Fuentes Pérez, Edwar (Elsevier, 2020)
      Some minor constituents of honey samples were determined through a fluorometric-chemical characterization method and related multifactorially with their antibacterial activity against Staphylococcus aureus and Pseudomonas ...
    • Relationship between mechanical and metabolic dyssynchrony with left bundle branch block: Evaluation by ... 
      Castro, Pablo; Winter, José Luis; Verdejo, Hugo; Orellana, Pilar; Quintana, Juan Carlos; Greig, Douglas; Enríquez, Andrés; Sepúlveda, Luis; Concepción, Roberto; Sepúlveda, Pablo; Rossel Mariángel, Víctor; Chiong Lay, Mario; García Nannig, Lorena; Lavandero González, Sergio (2012)
      Background Ventricular dyssynchrony is a common finding in patients with heart failure (HF), especially in the presence of conduction delays. The loss of ventricular synchrony leads to progressive impairment of contractile ...