Now showing items 305-324 of 2543

    • Ca2+, autophagy and protein degradation: Thrown off balance in neurodegenerative disease 

      Vicencio, José Miguel; Lavandero González, Sergio; Szabadkai, Gyorgy (ELSEVIER, 2010)
      Substantial progress has been made throughout the last decades in the elucidation of the key players and mechanisms responsible for Ca2+ signal generation in both excitable and non-excitable cells. Importantly, these ...
    • Cadmium and lead in a trophic marine chain 

      González, F.; Silva, M.; Schalscha B., Eduardo; Alay, F. (SPRINGER VERLAG, 1998-01)
      Heavy metals participate in complex biogeochemical cycles whose final destination (except on a geological scale)is the bottom of oceans and lakes. This implies that to reach the bottom the metals of the sediment have to ...
    • Cadmium-copper competitive sorption in soils 

      Vergara, I.; Schalscha B., Eduardo (Universita degli Studi di Pisa, Istituto di Chimica Agraria, 1992)
      Wasterwastes of municipal and industrial origin used to irrigate farmlands contain heavy metals which are sorbed on the surfaces of soil particles. Among those metals are cadmium (Cd) and copper(Cu). The degree to which ...
    • Calcium and mitochondrial metabolism in ceramide-induced cardiomyocyte death 

      Parra, Valentina; Moraga, Francisco; Kuzmicic, Jovan; López Crisosto, Camila; Troncoso, Rodrigo; Torrealba, Natalia; Criollo Céspedes, Alfredo; Díaz Elizondo, Jessica; Rothermel, Beverly A.; Quest, Andrew F. G.; Lavandero González, Sergio (Elsevier, 2013)
      Ceramides are important intermediates in the biosynthesis and degradation of sphingolipids that regulatenumerous cellular processes, including cell cycle progression, cell growth, differentiation and death. In ...
    • Calcium mediates the activation of the inhibitory current induced by odorants in toad olfactory receptor neurons 

      Morales, Bernardo; Madrid, Rodolfo; Bacigalupo Vicuña, Juan (1997)
      In toad olfactory neurons, a putrid odorant mixture inducing inhibitory responses increases Ca2+-activated K+ conductance, developing a hyperpolarizing receptor potential. Removal of extracellular Ca2+ or exposure to ...
    • Calcium transport and signaling in mitochondria 

      Bravo Sagua, Roberto; Parra Ortíz, María Valentina; López Crisosto, Camila; Díaz, Paula; Quest, Andrew F. G.; Lavandero González, Sergio (Wiley, 2017-04)
      Calcium (Ca2+) is a key player in the regulation of many cell functions. Just like Ca2+, mitochondria are ubiquitous, versatile, and dynamic players in determining both cell survival and death decisions. Given their ...
    • Calidad del té consumido en Chile 

      Fuenzalida, Lucía; Alfaro Román, Raquel; Wittig Rovira, Emma (Sociedad Chilena de Nutrición, Bromatología y Tecnología, 1982)
      The evaluation of the sensorial quality of tea was developed in order to complement the information obtained from physico-chemical analysis performed on different types of tea. The work was carried on with 12 samples, ...
    • Calpains and proteasomes mediate degradation of ryanodine receptors in a model of cardiac ischemic reperfusion 

      Pedrozo Cibils, Zully; Sánchez, G.; Torrealba, N.; Valenzuela, Rodrigo; Fernández, Carolina; Hidalgo Tapia, María Cecilia; Lavandero González, Sergio; Donoso Laurent, Paulina (ELSEVIER SCIENCE BV, 2010-03)
      Type-2 ryanodine receptors (RyR2) - the calcium release channels of cardiac sarcoplasmic reticulum - have a central role in cardiac excitation-contraction coupling. In the heart, ischemia/reperfusion causes a rapid and ...
    • Capillary electrophoretic determination of ions in soils / determinación de iones en suelos por electroforesis capilar 

      Ahumada Torres, Aída Inés de Lourdes; Schalscha B., Eduardo; Soto, R. (SOCIEDAD CHILENA DE QUIMICA, 1997-12)
      The applicability, sensitivity and repetitivity, as well as general aspects of the Capillary Zone Electrophoresis (CZE) technique was studied as applied in the identification and quantification of Cl-, NO3-, HCO3-, SO42-, ...
    • Capillary zone electrophoresis as a method for identification of golden kinglip (Genypterus blacodes) species during frozen storage 

      Larraín Barth, María Angélica; Abugoch James, Lilian; Quitral Robles, Vilma; Vinagre, Julia; Segovia, C. (ELSEVIER SCI LTD, 2002-03)
      Capillary zone electrophoresis (CZE) was used to study the effect of frozen storage on the electrophoretic patterns of sarcoplasmic proteins (SAR) extracted from fillets of golden kinglip (Genypterus blacodes) species using ...
    • Capping biological quantum dots with the peptide CLPFFD to increase stability and to reduce effects on cell viability 

      Riveros, A. L.; Astudillo, J.; Vásquez, C.; Jara, Danilo; Guerrero Hernández, Ariel; Gúzman, F.; Osorio Román, Igor; Kogan Bocian, Marcelo (Springer, 2016)
      Highly fluorescent nanoparticles, or quantum dots, have multiple applications in biology and biomedicine; however, in most cases, it is necessary to functionalize them to enhance their biocompatibility and selectivity. ...
    • Capping gold nanoparticles with modified chitosan polymers for biomedical applications 

      Mena, Juan F.; Neira Carrillo, Andrónico; Yazdani-Pedram Zobeiri, Mehrdad; Kogan Bocian, Marcelo (American Scientific Publishers, 2013)
      With the purpose of obtaining stable and non-toxic nanocomposites with potential biomedical applications we coated gold nanoparticles (AuNP) with chitosan (CHI) and CHI grafted with poly(Nisopropilacrylamide) (PNIPAAm) and ...
    • Caracterización del aceite de coquito de palma chilena (Jubaea chilensis) 

      Masson Salaué, Lilia; Camilo Manríquez, Conrado; Torija, M. Esperanza (INST GRASA SUS DERIVADOS, 2008-01)
      Se analizan las características generales del coquito de palma chilena y se estudia con detalle la composición de su aceite. Con este objetivo, se analizan 4 lotes de coquitos procedentes de las dos regiones de Chile ...
    • Carbon nanofiber screen printed electrode joined to a flow injectionsystem for nimodipine sensing 

      Salgado Figueroa, Paola; Gutiérrez, C.; Squella Serrano, Juan (Elsevier, 2015)
      tA simple and sensitive electrochemical method using pretreated carbon nanofiber screen printed elec-trodes joined to a flow injection analysis (CNF-SPE-FIA) system was developed to analyze nimodipine(NMD) in pharmaceutical ...
    • Carbon Nanotubes Electrochemistry Allows the In Situ Evaluation of the Effect of β-Sheet Breakers on the Aggregation Process of β-Amyloid 

      de la Fuente, Elizabeth; Adura, Carolina; Kogan Bocian, Marcelo; Bollo Dragnic, Soledad (2012)
      The inhibition of aggregation and disaggregation effect of a β-sheet breaker was evaluated by in situ electrochemistry of the Aβ 1-42 peptide. The exposition of 10tyr residue was followed using a carbon nanotubes modified ...
    • Carbon nanotubes non-covalently functionalized with cytochrome c: A new bioanalytical platform for building bienzymatic biosensors 

      Eguílaz, Marcos; Venegas, Constanza; Gutiérrez, Alejandro; Rivas, Gustavo; Bollo Dragnic, Soledad (Elsevier, 2016)
      We report for the first time the use of glassy carbon electrodes (GCE) modified by drop-coating with multi-walled carbon nanotubes (MWCNTs) dispersed in cytochrome c as platform for the construction of bienzymatic biosensors, ...
    • Carboxymethylcellulose from bleached organosolv fibers of eucalyptus nitens: synthesis and physicochemical characterization 

      Yáñez-S, Mauricio; Matsuhiro, Betty; Maldonado, Santiago; González, Raúl; Luengo, Jorge; Uyarte, Omar; Serafine, Daniel; Moya, Sergio; Romero, Julio; Torres, Rodrigo; Kogan Bocian, Marcelo (Springer, 2018-05)
      The objective of the present study was to synthesize sodium carboxymethylcellulose from Eucalyptus nitens cellulose. The cellulose extraction was carried out in three stages. In the first stage, E. nitens wood was fractionated ...
    • Cardiac fibroblasts as sentinel cells in cardiac tissue: Receptors, signaling pathways and cellular functions 

      Díaz Araya, Guillermo; Vivar Sánchez, Raúl; Humeres Martínez, Claudio; Boza Fuentes, Pía de los Angeles; Bolívar, S.; Muñoz, C. (Elsevier, 2015)
      Cardiac fibroblasts (CF) not only modulate extracellular matrix (ECM) proteins homeostasis, but also respond to chemical and mechanical signals. CF express a variety of receptors through which they modulate the proliferation/cell ...
    • Cardiomyocyte ryanodine receptor degradation by chaperone-mediated autophagy 

      Pedrozo Cibils, Zully; Torrealba, Natalia; Fernández, Carolina; Gatica, Damián; Toro, Barbra; Quiroga, Clara; Rodríguez, Andrea E.; Sánchez, Gina; Gillette, Thomas G.; Hill, Joseph A.; Donoso Laurent, Paulina; Lavandero González, Sergio (the European Society of Cardiology, 2013)
      Aims Chaperone-mediated autophagy (CMA) is a selective mechanism for the degradation of soluble cytosolic proteins bearing the sequence KFERQ. These proteins are targeted by chaperones and delivered to lysosomes where ...
    • Cardiomyopathies produced by toxoplasma gondii 

      Arribada, Arturo; Escobar, Edgardo (1968)
      Eleven cases of cardiomyopathy are presented in which the toxoplasmic infection was ascertained by serologic study. The parasite was recovered from the heart in one of them. All other common etiologies were ruled out by ...