Browsing by Issue Date Artículos de revistas

Now showing items 1281-1300 of 2801

    • Antioxidant screening of medicinal herbal teas 
      Speisky Cosoy, Hernán; Rocco, Claudia; Carrasco, Catalina; Lissi Gervaso, Eduardo A.; López Alarcón, Camilo (JOHN WILEY, 2006-06)
      Herbal tea consumption is deeply and widely rooted amongst South-American populations. In view of the involvement of oxygen- and nitrogen-reactive species in the ethiogenesis of several diseases, the antioxidant properties ...
    • Novel antitrypanosomal agents based on palladium nitrofurylthiosemicarbazone complexes: DNA and redox ... 
      Otero, Lucía; Vieites, Marisol; Boiani, Lucía; Denicola, Ana; Rigol Olsen, Carolina; Opazo, Lucía; Olea Azar, Claudio; Maya Arango, Juan; Morello Casté, Antonio; Krauth Siegel, R. Luise; Piro, Oscar E.; Castellano, Eduardo; González, Mercedes; Gambino, Dinorah; Cerecetto, Hugo (AMER CHEMICAL SOC, 2006-06-01)
      In the search for new therapeutic tools against American Trypanosomiasis palladium complexes with bioactive nitrofuran-containing thiosemicarbazones as ligands were obtained. Sixteen novel palladium (II) complexes with the ...
    • Voltammetric redox behavior of nitrofuryl 1,4-dihydropyridine derivatives: Interdependence between two redox ... 
      Argüello da Silva, Jacqueline; Núñez Vergara, Luis; Bollo Dragnic, Soledad; Squella Serrano, Juan (ELSEVIER SCIENCE SA, 2006-06-01)
      To investigate new chemotherapeutics alternatives to Chagas' disease, three 4-(5'-nitro-2'-furyl)-1,4-dihydropyridine derivatives were synthesized and electrochemically investigated in order to clarify their redox behavior. ...
    • Hyperosmotic stress activates p65/RelB NF kappa B in cultured cardiomyocytes with dichotomic actions on ... 
      Eisner, Verónica; Quiroga, Clara; Criollo Céspedes, Alfredo; Eltit Ortega, José Miguel; Chiong Lay, Mario; Parra, Valentina; Hidalgo, Karla; Toro, Barbra; Díaz Araya, Guillermo; Lavandero González, Sergio (ELSEVIER, 2006-06-12)
      NF kappa B is a participant in the process whereby cells adapt to stress. We have evaluated the activation of NF kappa B pathway by hyperosmotic stress in cultured cardiomyocytes and its role in the activation of caspase ...
    • Electronic properties of mixed valence iron(II,III) dinuclear complexes with carboxylate bridges 
      Paredes García, Verónica; Venegas Yazigi, Diego; Latorre, Ramón; Spodine Spiridonova, Evgenia (PERGAMON-ELSEVIER SCIENCE LTD, 2006-06-19)
      Mixed valence dinuclear iron(II,III) complexes of the type [Fe2L2(H2O)(4)](NO3)(H2O)(3), where L is the dianion of a Schiff base ligand derived from alpha-amino acids (glycine and L-isolecine) and 5-bromosalicylaldehyde, ...
    • Quality enhancement of canned sardine (Sardina pilchardus) by a preliminary slurry ice chilling treatment 
      Losada, Vanesa; Rodríguez Melis, Alicia; Ortiz Viedma, Jaime; Aubourg, Santiago P. (WILEY-V C H VERLAG GMBH, 2006-07)
      The slurry ice technology has shown wide advantages when employed as a chilling method for marine species instead of the traditional flake ice storage. In the present work, the use of slurry ice was evaluated for the first ...
    • Effects of tillage systems on soil characteristics, glomalin and mycorrhizal propagules in a Chilean Ultisol 
      Borie, Fernando; Rubio, R.; Rouanet, J. L.; Morales, A.; Borie B., Gilda; Rojas, C. (ELSEVIER, 2006-07)
      Tillage affects the soil physical and chemical environment in which soil microorganisms live, thereby affecting their number, diversity and activity. However, soil disturbance generally has the greatest impact on biological ...
    • Three oxo complexes with a tetra-nuclear [Cu-4 (mu(2)-Cl)(6)(mu(4)-O)] unit 
      Cortés, Piedad; Atria Salas, Ana María; Garland, María Teresa; Baggio, Ricardo (BLACKWELL PUBLISHING, 2006-07)
      The three title compounds, namely 4-phenyl-1H-imidazolium hexa-mu(2)-chloro-chloro-mu(4)-oxo-tris(4-phenyl-1H-imidazole-kappa N-1)tetracopper(II) monohydrate, (C9H9N2)[Cu4Cl7O(C9H8N2)(3)]center dot H2O, hexa-mu(2)-chloro ...
    • Two oxo complexes with tetra-nuclear [Fe-4(mu(3)-O)(2)](8+) and trinuclear [Fe-3(mu(3)-O](7+) units 
      Cortés, Piedad; Atria Salas, Ana María; Garland, María Teresa; Baggio, Ricardo (BLACKWELL PUBLISHING, 2006-07)
      Two new oxo complexes, namely hexa-mu(2)-acetato-acetato-aquabis(di-3-pyridylamine)di-mu(3)-oxo-tetrairon(III) chloride monohydrate ethanol 1.25-solvate, [Fe-4(C2H3O2)(7)O-2(C10H9N3) (2)(H2O)]Cl center dot 1.25C(2)H(6)O ...
    • Replacement of a proline with silaproline causes a 20-fold increase in the cellular uptake of a pro-rich peptide 
      Pujals, Sílvia; Fernández Carneado, Jimena; Kogan Bocian, Marcelo; Martínez, Jean; Cavelier, Florine; Giralt, Ernest (AMER CHEMICAL SOC, 2006-07-05)
      The results presented here show that elementary design enhancements have led to a 20-fold increase in the cellular uptake properties of a Pro-rich cell-penetrating peptide. These results are relevant not only due to the ...
    • Modulating magnetic properties of a macrocyclic dinuclear copper(II) complex: Influence of counteranions ... 
      Venegas Yazigi, Diego; Cortés, Susana; Paredes García, Verónica; Peña, Octavio; Ibáñez, Andrés; Baggio, Ricardo; Spodine Spiridonova, Evgenia (PERGAMON-ELSEVIER SCIENCE LTD, 2006-07-10)
      A group of dinuclear copper(II) compounds containing the macrocyclic complexes Cu2L2+ (LH2 = C(24)H(2)sN(4)O(4): a ligand derived from the condensation of 4-methyl-2,6-diformylphenol with 1,3-diamine-2-propanol) have been ...
    • alpha 4 beta 2 nicotinic receptors with high and low acetylcholine sensitivity: Pharmacology, stoichiometry, ... 
      Moroni, Mirko; Zwart, Ruud; Sher, Emanuele; Cassels Niven, Bruce; Bermúdez, Isabel (AMER SOC PHARMACOLOGY EXPERIMENTAL THERAPEUTICS, 2006-08)
      Alpha 4 and beta 2 nicotinic acetylcholine receptor ( nAChR) subunits expressed heterologously assemble into receptors with high (HS) and low (LS) sensitivity to acetylcholine (ACh); their relative proportions depend on ...
    • Activity of metalloproteinase-9 is related to oxidative stress in the acute coronary syndrome 
      Bittner, Alex; Castro Agüero, Pablo; Pérez, Osvaldo; Alcaíno Olivares, Hernán Alejandro; Troncoso Cotal, Rodrigo; Chiong Lay, Mario; Díaz Araya, Guillermo; Lavandero González, Sergio (OXFORD UNIV PRESS, 2006-08)
      Meeting Abstract
    • Las asignaturas farmacéuticas pendientes 
      Vergara Mardones, Hernán (Federación Farmacéutica Sudamericana (FEFAS), 2006-08)
      El farmacéutico está definitivamente ligado a las moléculas con atributos terapéuticos. Entre sus dominios figura el conocimineto de su estructura y efectos; debe saber el "para que", el "como" y el "porqué" actúan los ...
    • Use of PP grafted with itaconic acid as a new compatibilizer for PP/clay nanocomposites 
      Moncada Acevedo, Edwin; Quijada Abarca, Juan; Lieberwirth, Ingo; Yazdani-Pedram Zobeiri, Mehrdad (WILEY-V C H VERLAG GMBH, 2006-08-02)
      Functionalized PP samples with different percentages of grafted IA, i.e., 0.7, 1 or 1.8 wt.-%, with similar molecular weights were used as compatibilizers in PP/clay nanocomposites. PP nanocomposites containing 1 wt.-% of ...
    • Use of functionalized metallocene copolymers from ethylene and polar olefins as compatibilizers for ... 
      Domínguez Barceló, Ana María; Quijada Abarca, Juan; Yazdani-Pedram Zobeiri, Mehrdad (WILEY-V C H VERLAG GMBH, 2006-08-07)
      Functionalized metallocene copolymers synthesized from ethylene with 5-hexen-1-ol and ethylene with 10-undecen-1-ol were used as compatibilizers in LDPE/starch and LDPE/dextran blends in order to improve the interfacial ...
    • Hyperosmotic stress-dependent NF kappa B activation is regulated by reactive oxygen species and IGF-1 in ... 
      Eisner, Verónica; Criollo Céspedes, Alfredo; Quiroga, Clara; Olea Azar, Claudio; Santibáñez, Juan Francisco; Troncoso, Rodrigo; Chiong Lay, Mario; Díaz Araya, Guillermo; Foncea, Rocío; Lavandero González, Sergio (ELSEVIER, 2006-08-07)
      We have recently shown that hyperosmotic stress activates p65/RelB NF kappa B in cultured cardiomyocytes with dichotomic actions on caspase activation and cell death. It remains unexplored how NFKB is regulated in cultured ...
    • Topical anti-inflammatory activity of 2 alpha-hydroxy pentacyclic triterpene acids from the leaves of Ugni molinae 
      Aguirre, María C.; Delporte Vergara, Carla; Backhouse Erazo, Nadine; Erazo, Silvia; Letelier Muñoz, María Eugenia; Cassels Niven, Bruce; Silva, Ximena; Alegría, Sergio; Negrete Córdova, Rosa (PERGAMON-ELSEVIER SCIENCE LTD, 2006-08-15)
      Leaf extracts of Ugni molinae Turcz. are used in the Chilean cosmetic industry on the assumption that they have decongestant, regenerative, and anti-aging properties. A bioassay-guided fractionation of this plant material ...
    • Magnetic properties and antibacterial activity of tetranuclear copper complexes bridged by oxo group 
      Cortés, Piedad; Atria Salas, Ana María; Contreras, M.; Garland, María Teresa; Peña, Octavio; Corsini, Gino (SOCIEDAD CHILENA DE QUIMICA, 2006-09)
      A series of three tetranuclear Cu(II) complexes of general formula [Cu4OCl6L4], where L is a Lewis Base ligand has been characterized through magnetic measurements and determination of antimicrobial activities. This study ...
    • Alternativas biotecnológicas para la producción de ácidos grasos poliinsaturados omega-3 
      Hinzpeter, I.; Shene, C.; Masson Salaué, Lilia (INST GRASA SUS DERIVADOS, 2006-09)
      Fish oils are the main sources of omega-3 (omega 3) polyunsaturated acids (PUFA) such as eicosapentaenoic (C20:5 omega 3) and docosahexaenoic (C22:6 omega 3) acids. World demand for omega 3 PUFA shows an increasing trend ...