Browsing by Title

Now showing items 21569-21588 of 92520

    • Demonstration of sodium and potassium conductance changes during a nerve action potential 
      Rojas, E.; Bezanilla, F.; Taylor, R. E. (1970)
      WE wish to report a new method with which we have been able to measure the sodium and potassium conductance changes postulated by Hodgkin and Huxley1 in the course of a single action potential. To measure the membrane ...
    • Demonstration of specific high affinity receptors for aldosterone in cytosol of rat colon 
      Binder, Henry J.; White Ortiz, Allan; Whiting, Diane; Hayslett, John (1986)
      Since both aldosterone and glucocorticoids increase cation transport in rat distal colon, and a specific glucocorticoid high affinity cytosolic receptor has been indentified in this tissue, it was possible that the action ...
    • Demoras en la noche: Anexo I: Demoras en el entre, Anexo II: Demoras en lo anónimo 
      Flores Arancibia, Iván (Universidad de Chile, 2007)
      Sólo en la superficie la palabra central de esta investigación, “noche”, elude la conceptualidad filosófica. En la superficie, parece encarnar cierta metaforicidad del discurso; generalmente, opera como un agregado estético; ...
    • Demostración experimental de un separador de bandas fotónico 
      Román Yáñez, Roberto (Universidad de Chile, 2014)
      Para disminuir el ruido de la atmósfera se construyen receptores de radio denominados separadores de banda. Su implementación tradicional requiere de componentes analógicos denominados híbridos de cuadratura (dispositivos ...
    • Demócrito: una "nueva" práctica de la filosofía 
      Rodríguez Arriagada, Marcelo (Universidad de Chile, 2014)
      Respecto a la relación entre el eleatismo y el atomismo existen, en última instancia, dos interpretaciones. Por un lado, está la interpretación que postula la existencia de una relación de continuidad entre Parménides y ...
    • Dempster-Shafer theory of evidence: A new approach to spatially model wildfire risk potential in central Chile 
      González, Cristián; Castillo, Miguel; García Chevesich, Pablo; Barrios, Juan (Elsevier B.V., 2018)
      A spatial modeling was applied to Chilean wildfire occurrence, through the Dempster-Shafer's evidence theory and considering the 2006–2010 period for the Valparaiso Region (central Chile), a representative area for this ...
    • DEMRE presenta nuevo sitio web de la PSU 
      Universidad de Chile. Dirección de Servicios de Información y Bibliotecas (Universidad de Chile, 2015-04-21)
      Tras meses de investigación, edición y desarrollo, la Prueba de Selección Universitaria presenta un renovado portal. Con un diseño gráfico y organización de contenidos pensados en la experiencia y necesidades del usuario, ...
    • Dendritic and stromal cells from the spleen of lupic mice present phenotypic and functional abnormalities 
      Gleisner, Maria Alejandra; Reyes, Paz; Alfaro, Jennifer; Solanes, Paola; Simon, Valeska; Crisostomo, Natalia; Sauma Mahaluf, Daniela; Rosemblatt Silber, Mario César; Bono Merino, María Rosa (2013)
      Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by the increase in the percentage of autoreactive B and T lymphocytes. Since dendritic cells (DCs) are essential for B cell and T cell function, ...
    • Dendritic assembly of heteromeric γ-aminobutyric acid type B receptor subunits in hippocampal neurons 
      Ramírez, Omar A.; Vidal, René L.; Tello, Judith A.; Vargas, Karina J.; Kindler, Stefan; Härtel, Steffen; Couve, Andrés (2009)
      Understanding the mechanisms that control synaptic efficacy through the availability of neurotransmitter receptors depends on uncovering their specific intracellular trafficking routes. γ-Aminobutyric acid type B (GABAB) ...
    • Dendritic cell chimerism in oral mucosa of transplanted patients affected by graft-versus-host disease 
      Pérez, Claudio A.; Rabanales, Ramón; Rojas Alcayaga, Gonzalo; Larrondo Lillo, Milton; Escobar Álvarez, Alejandro; López, Mercedes N.; Salazar Onfray, Flavio; Alfaro Lucero, Jorge; González, Fermin E. (John Wiley & Sons, 2016)
      ObjectiveGraft-versus-host disease (GVHD) is one of the main complications after haematopoietic stem cell transplantation. Clinical features of GVHD include either an acute (aGVHD) or a chronic (cGVHD) condition that affects ...
    • Dendritic cell immunizations alone or combined with low doses of interleukin-2 induce specific immune ... 
      Escobar, A.; López, M.; Serrano, A.; Ramirez, M.; Pérez, C.; Aguirre, A.; González, R.; Alfaro, J.; Larrondo, M.; Fodor, M.; Ferrada, C.; Salazar Onfray, Flavio (2005)
      Dendritic cell (DC)-based therapy has proved to be effective in patients with a variety of malignancies. However, an optimal immunization protocol using DCs and the best means for delivering antigens has not yet been ...
    • Dendritic Cells and B Cells Cooperate in the Generation of CD4+ CD25+ FOXP3+ Allogeneic T Cells 
      Moore, C.; Sauma Mahaluf, Daniela; Reyes Pérez, P. A.; Morales Peña, José; Rosemblatt Silber, Mario César; Bono Merino, María Rosa; Fierro, J. A. (ELSEVIER, 2010)
      Background. CD4 CD25 Foxp3 regulatory T cells (Treg) play an essential role in immune tolerance, suppressing responses against self-antigens. Additionally, Treg play an important role in maintaining immunosuppression ...
    • Dendritic Cells and B Cells Cooperate in the Generation of CD4+CD25+FOXP3+ Allogeneic T Cells 
      Moore, C.; Sauma Mahaluf, Daniela; Reyes, P. A.; Morales, J.; Rosemblatt Silber, Mario César; Bono Merino, María Rosa; Fierro, J. A. (2010)
      Background: CD4+CD25+Foxp3+ regulatory T cells (Treg) play an essential role in immune tolerance, suppressing responses against self-antigens. Additionally, Treg play an important role in maintaining immunosuppression to ...
    • Dendritic cells and the mode of action of anticalcineurinic drugs: An integrating hypothesis 
      Fierro, Alberto; Mora, J. Rodrigo; Bono Merino, María Rosa; Morales, Jorge; Buckel, Erwin; Sauma Mahaluf, Daniela; Rosemblatt Silber, Mario César (2003)
    • Dendritic Cells and Toll-Like Receptors 2 and 4 in the Ileum of Crohn's disease patients 
      Silva, Manuel A.; Quera Pino, Rodrigo; Valenzuela Escobar, Jorge; Salim, Sa’ad Y.; Söderholm, Johan D.; Perdue, Mary H. (SPRINGER, 2008-07)
      We investigated myeloid-dendritic cell (DC) marker and Toll-like receptor (TLR)-2 and 4 distributions in ileal samples from Crohn’s disease (CD) patients (n = 14) and controls (n = 13). In controls, no TLR-2+ cells ...
    • Dendritic cells are crucial for cardiovascular remodeling and modulate neutrophil gelatinase-associated ... 
      Araos, Patricio; Prado, Carolina; Lozano, Mauricio; Figueroa, Stefanny; Espinoza, Alexandra; Berger, Thorsten; Mak, Tak W.; Jaisser, Frédéric; Pacheco, Rodrigo; Michea Acevedo, Luis; Amador, Cristián A. (Lippincott Williams and Wilkins, 2019)
      Background:Adaptive immunity is crucial in cardiovascular and renal inflammation/fibrosis upon hyperactivation of mineralocorticoid receptor. We have previously demonstrated that dendritic cells can respond to mineralocorticoid ...
    • Dendritic development in neocortex of infants with early postnatal life undernutrition 
      Cordero, María Elena; D'Acuña, Eduardo; Benveniste, Samuel; Prado, René; Nuñez, Juan Antonio; Colombo, Marta (1993)
      The structure of large pyramidal cells from layer V of the motor cortex of undernourished and well-nourished infants was studied to determine the effects of postnatal nutrition on cortical dendritic development. In ...
    • Dendritic development in the neocortex of adult rats subjected to postnatal malnutrition 
      Cordero, Maria Elena; Trejo, Manuel; Garcia, Emilio; Barros, Teresa; Colombo, Marta (1985)
      The Golgi-Cox method was used to study the maturation of the large pyramidal cells of the Vth cortical layer in two groups of adult rats, one subjected to early postnatal malnutrition and another malnourished only during ...
    • Dendroecological analysis of a Fitzroya cupressoides and a Nothofagus nitida stand in the Cordillera Pelada, Chile 
      Devall, Margaret S.; Parresol, Bernard R.; Armesto, Juan J. (1998)
      Lumbering of Fitzroya cupressoides in Chile began in 1599 and continued until 1976, when the species was declared a national monument and cutting of live trees was prohibited. Today, F. cupressoides is threatened; many of ...
    • Dengue una enfermedad emergente y re-emergente en América 
      Venegas, J.; Rivera O., Dácil; Vergara, C.; Lapierre Acevedo, Lisette (Universidad de Chile, 2012)
      El Dengue es una enfermedad infecciosa, producida por un arbovirus cuyo único reservorio es el hombre. El virus utiliza como vector biológico al mosquito Aedes aegypti o al mosquito Aedes albopictus. La sintomatología se ...