Browsing by Title Artículos de revistas

Now showing items 2658-2677 of 2801

    • Trends in stratospheric and free tropospheric ozone 
      Harris, N. R. P.; Ancellet, G.; Bishop, L.; Hofmann, D. J.; Kerr, B.; McPeters, R. D.; Préndez Bolívar, María Margarita; Randel, W. J.; Staehelin, J.; Subbaraya, B. H.; Volz-Thomas, A.; Zawodny, J.; Zerefos, C. S. (AMER GEOPHYSICAL UNION, 1997-01-20)
      Current understanding of the long-term ozone trends is described. Of particular concern is an assessment of the quality of the available measurements, both ground and satellite based. Trends in total ozone have been ...
    • TRIAMMINE COBALT(III)-L-MALATE - MALATE ION AS A TRIDENTATE LIGAND 
      Bunel Torrealba, Sergio; Ibarra, Carmen; Calvo Pérez, Víctor; Blasko, Andrei; Bunton, Clifford A.; Keder, N. L. (PERGAMON-ELSEVIER SCIENCE LTD, 1991)
      The crystal structure of the title compound has been determined from single crystal X-ray diffraction data. There is little angle strain in the complex which has two carboxylate ions and one alkoxide ion bound to cobalt(III). ...
    • TrkB receptors are required for follicular growth and oocyte survival in the mammalian ovary 
      Romero Osses, Carmen; Dissen, G. A.; DeChiara, T. M.; Reichardt, L.; Cornea, A.; Ojeda, Sergio R.; Paredes Vargas, Alfonso; Xu, B. J. (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004-03-15)
      Although it is well established that both follicular assembly and the initiation of follicle growth in the mammalian ovary occur independently of pituitary hormone support, the factors controlling these processes remain ...
    • TrkB receptors are required for follicular growth and oocyte survival in the mammalian ovary (vol 267, pg ... 
      Paredes Vargas, Alfonso; Romero Osses, Carmen; Dissen, G. A.; DeChiara, T. M.; Reichardt, L.; Cornea, A.; Ojeda, Sergio R.; Xu, B. J. (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004-06-01)
      Although it is well established that both follicular assembly and the initiation of follicle growth in the mammalian ovary occur independently of pituitary hormone support, the factors controlling these processes remain ...
    • Trophic factors in cerebrospinal fluid and spinal cord of patients with tropical spastic paraparesis, HIV, ... 
      Albrecht, David; García Nannig, Lorena; Cartier Rovirosa, Luis; Kettlun, Ana M.; Vergara, Carmen; Collados, Lucia; Valenzuela, M. Antonieta (2006)
      HTLV-1-associated myelopathy/tropical spastic paraparesis (TSP/HAM) is a chronic CNS disease characterized by axomyelinic degeneration of the long axons of corticospinal tracts. Levels of NGF, NT-3, NT-4/5, BDNF, GDNF, ...
    • Trypanosoma cruzi calreticulin: A possible role in Chagas' disease autoimmunity 
      Hager Ribeiro, Carolina; López Bartolucci, Carolina; Ramírez Toloza, Galia; Valck Calderón, Carolina Eliana; Molina, María Carmen; Aguilar, Lorena; Rodríguez, Margarita; Maldonado, Ismael; Martínez, Ramón; González, Carlos; Troncoso Cotal, Rodrigo; Lavandero González, Sergio; Gingras, Alexandre R.; Schwaeble, Wilhelm; Ferreira, Arturo (PERGAMON-ELSEVIER SCIENCE LTD, 2009-03)
      Trypanosoma cruzi (T cruzi) is the causative agent of Chagas' disease, an endemic and chronic illness that affects 18 million people in Latin America. The mechanisms underlying its pathogenesis are controversial. There is ...
    • Trypanosoma cruzi: effect and mode of action of nitroimidazole and nitrofuran derivatives 
      Maya Arango, Juan; Bollo Dragnic, Soledad; Núñez Vergara, Luis; Squella Serrano, Juan; Repetto Scaramelli, Yolanda; Morello Casté, Antonio; Perie, J.; Chauviere, G. (PERGAMON-ELSEVIER SCIENCE, 2003-03-15)
      With the aim of determining the actual target(s) of nitro-group bearing compounds considered as possible leads for the development of drugs against Chagas' disease, we studied in parallel nitrofurans and nitroimidazoles. ...
    • Trypanosoma cruzi: Inhibition of parasite growth and respiration by oxazolo(thiazolo)pyridine derivatives ... 
      Maya Arango, Juan; Morello Casté, Antonio; Repetto Scaramelli, Yolanda; Rodríguez, Andrés; Puebla, P.; Caballero S., Esther; Medarde, M.; Núñez Vergara, Luis; Squella Serrano, Juan; Ortíz Yáñez, María Eugenia; Fuentealba, J.; San Feliciano, Arturo (ACADEMIC PRESS INC, 2001-09)
      Chagas' disease constitutes a therapeutic challenge because presently available drugs have wide toxicity to the host and are generally ineffective in the chronic stages of the disease. A series of oxazolo(thiazolo)pyridene ...
    • (TTA)n Polymorphism in 3-Hydroxy-3-Methylglutaryl-Coenzyme A and Response to Atorvastatin in Coronary Artery ... 
      Noriega Sepúlveda, Viviana Carolina; Pennanen Saavedra, Christian; Sánchez, P.; Chiong Lay, Mario; Llancaqueo Valeri, Marcelo; Lavandero González, Sergio; Prieto Domínguez, Juan (WILEY-BLACKWELL PUBLISHING, 2009-03)
      3-Hydroxy-3-methylglutaryl-coenzyme A reductase inhibitors have been used clinically for lowering total and low-density lipoprotein cholesterol. Interindividual pharmacological differences observed with this treatment have ...
    • Tubulin equilibrium unfolding followed by time-resolved fluorescence and fluorescence correlation spectroscopy 
      Sánchez, Susana A.; Brunet, Juan E.; Jameson, David M.; Lagos Mónaco, Rosalba; Monasterio Opazo, Octavio (2004)
      The pathway for the in vitro equilibrium unfolding of the tubulin heterodimer by guanidinium chloride (GdmCl) has been studied using several spectroscopic techniques, specifically circular dichroism (CD), two-photon ...
    • Tubulinfolding cofactor TBCB is a target of the salmonella effector protein SseK1 
      Araujo Garrido, Juan Luis; Baisón Olmo, Fernando; Bernal Bayard, Joaquín; Romero, Francisco; Ramos Morales, Francisco (MDPI, 2020)
      Salmonella enterica serovar Typhimurium is a human and animal pathogen that uses type III secretion system effectors to manipulate the host cell and fulfill infection. SseK1 is a Salmonella effector with glycosyltransferase ...
    • Tumor necrosis factor-alpha activates nuclear factor-kappa B but does not regulate progesterone production ... 
      González Navarrete, Flor Cecilia; Eisner, Verónica; Morales, Priscilla; Castro, Olga; Pommer Téllez, Ricardo; Quiroga Lagos, Clara; Lavandero González, Sergio; Devoto, Luigi (PARTHENON PUBLISHING GROUP, 2007-07)
      Background. The role of tumor necrosis factor-alpha (TNF-alpha) in granulosa luteal cell function and steroidogenesis is still controversial. Our aim was to examine the steroiclogenic response, together with the simultaneous ...
    • Tuning flux: autophagy as a target of heart disease therapy 
      Xie, Min; Morales, Cindy R.; Lavandero González, Sergio; Hill, Joseph A. (LIPPINCOTT WILLIAMS & WILKINS, 2011-05)
      Whereas we have known for some years of the participation of lysosomal mechanisms in heart disease, it is only recently that upstream mechanisms (autophagy) are being explored. The challenge for the future is to dissect ...
    • Tuning the photophysical properties of a (P,N)Re-I complex by adding a -NH- fragment into a P,N-bidentate ... 
      Mella, Pablo; Carlos Palma, Juan; Cepeda Plaza, Marjorie; Aguirre Álvarez, Pedro; Manzur Saffie, Jorge; Günther Sapunar, Germán; Pizarro, Nancy; Vega, Andrés (Elsevier, 2016)
      The spectroscopic, electrochemical and photophysical properties of the new complex [P,N-{(C6H5)(2)(C5H4N)NHP)Re(CO)(3)Br] (RePNN) are reported. The UV-Vis spectrum in dichloromethane (DCM)' shows an absorption maximum ...
    • Two isomorphous cobalt(II) complexes: poly[[diaqua-mu-2,5-dicarboxybenzene-1,4-dicarboxylato-mu-1,2-di-4- ... 
      Atria Salas, Ana María; Corsini, Gino; Talamilla, Arlyn; Garland, María Teresa; Baggio, Ricardo (BLACKWELL PUBLISHING, 2009-01)
      The two isomorphous title structures, formulated as {[Co(C10H4O8)(C12H10N2)(H2O)(2)]center dot C12H10N2}(n), (I), and {[Co(C10H4O8)(C12H12N2)(H2O)(2)]center dot C12H12N2}(n), (II), respectively, are reported. They crystallize ...
    • Two isomorphous crotonatolanthanide complexes: tetra-mu-but-2-enoato-bis[diaqua(but-2-enoato)Ln]-2,6-diaminopurine ... 
      Atria Salas, Ana María; Astete, Alan; Garland, María Teresa; Baggio, Ricardo (WILEY-BLACKWELL PUBLISHING, 2009-11)
      The title isomorphous compounds, tetra-mu-but-2-enoato-bis[diaqua(but-2-enoato)dysprosium(III)]-2,6-diaminopurine (1/2), [Dy-2(C4H5O2)(6)(H2O)(4)]center dot 2C(5)H(6)N(6), and tetra-mu-but-2-enoato-bis[diaqua(but-2-enoat ...
    • Two isomorphous imidazole (Him) complexes: [MCl2(Him)(2)(H2O)(2)] (M = Co and Ni) 
      Atria Salas, Ana María; Cortés, P.; Garland, María Teresa; Baggio, Ricardo (BLACKWELL MUNKSGAARD, 2003-10)
      The structures of aquadichlorobis(1H-imidazole) cobalt(II), [CoCl2(Him)(2)(H2O)(2)] (Him is 1H-imidazole, C3H4N2), (I), and aquadichlorobis(1H-imidazole) nickel(II), [NiCl2( Him)(2)( H2O)(2)], ( II), are isomorphous and ...
    • Two malic enzymes in Pseudomonas aeruginosa 
      Eyzaguirre, Jaime; Cornwell, E.; Borie B., Gilda; Ramírez, B. (American Society of Microbiology, 1973)
      Cell-free extract supernatant fluids of Pseudomonas aeruginosa were shown to lack malic dehydrogenase but possess a nicotinamide adenine dinucleotide (NAD) - or NAD phosphate (NADP)-dependent enzymatic activity, with ...
    • Two new dammarane triterpenoids from Kageneckia angustifolia D. Don 
      López Pérez, J. L.; Erazo, Silvia; Delporte Vergara, Carla; Negrete Córdova, Rosa; Muñoz Muñoz, Orlando; García, R.; Backhouse Erazo, Nadine; San Feliciano, Arturo (JOHN WILEY & SONS LTD, 2005-11)
      Two new dammarane triterpenoids, 20R,21-epoxydammar-24-ene-3,23-dione and 20R,21-epoxy-3 beta-hydroxydammar-24-ene-23-one have been isolated from the aerial parts of Kageneckia angustifolia D. Don, Rosaceae, along with the ...
    • Two new hybrid organic/inorganic copper(II)-oxovanadate(V) diphosphonates: [Cu2(phen)2(O3PCH2PO 3)(V2O5)(H2O)]·H ... 
      Ushak, Svetlana; Spodine Spiridonova, Evgenia; Le Fur, Eric; Venegas Yazigi, Diego; Pivan, Jean Yves; Schnelle, Walter; Cardoso-Gil, Raul; Kniep, Rüdiger (2006)
      Full title: Two new hybrid organic/inorganic copper(II)-oxovanadate(V) diphosphonates: [Cu2(phen)2(O3PCH2PO 3)(V2O5)(H2O)]·H 2O and [Cu2(phen)2(O3P(CH 2)3PO3)(V2O5)] ·C3H8. Synthesis, structure, and magnetic properties. ...