Now showing items 1-20 of 35

    • Alteration in mitochondrial Ca2+ uptake disrupts insulin signaling in hypertrophic cardiomyocytes 

      Gutiérrez, Tomás; Parra, Valentina; Troncoso, Rodrigo; Pennanen, Christian; Contreras Ferrat, Ariel Eduardo; Vásquez Trincado, César Alonso; Morales, Pablo E.; López Crisosto, Camila; Sotomayor Flores, Cristian Alejandro; Chiong Lay, Mario; Rothermel, Beverly A.; Lavandero González, Sergio (BioMed Central Ltd., 2014)
      © 2014 Gutierrez et al.; licensee BioMed Central Ltd. Background: Cardiac hypertrophy is characterized by alterations in both cardiac bioenergetics and insulin sensitivity. Insulin promotes glucose uptake by cardiomyocytes ...
    • Attenuation of endoplasmic reticulum stress using the chemical chaperone 4-phenylbutyric acid prevents cardiac fibrosis induced by isoproterenol 

      Ayala, Pedro; Montenegro, José; Vivar, Raúl; Letelier, Alan; Urroz, Pablo Aránguiz; Copaja, Miguel; Pivet, Deisy; Humeres, Claudio; Troncoso, Rodrigo; Vicencio, José Miguel; Lavandero González, Sergio; Díaz Araya, Guillermo (2012)
      Increasing evidence indicates that endoplasmic reticulum (ER) stress is involved in various diseases. In the human heart, ischemia/reperfusion has been correlated to ER stress, and several markers of the unfolded protein ...
    • Autophagy and oxidative stress in non-communicable diseases: A matter of the inflammatory state? 

      Peña Oyarzún, Daniel; Bravo Sagua, Roberto; Díaz Vega, Alexis; Aleman, Larissa; Chiong Lay, Mario; Garcia, Lorena; Bambs, Claudia; Troncoso, Rodrigo; Cifuentes, Mariana; Morselli, Eugenia; Ferreccio, Catterina; Quest, Andrew F. G.; Criollo Céspedes, Alfredo; Lavandero González, Sergio (Elsevier Inc., 2018)
      © 2018 Elsevier Inc. Non-communicable diseases (NCDs), also known as chronic diseases, are long-lasting conditions that affect millions of people around the world. Different factors contribute to their genesis and progression; ...
    • Autophagy mediates calcium-sensing receptor-induced TNFα production in human preadipocytes 

      Mattar, Pamela; Bravo Sagua, Roberto; Tobar, Nicolás; Fuentes, Cecilia; Troncoso, Rodrigo; Breitwieser, Gerda; Lavandero González, Sergio; Cifuentes, Mariana (Elsevier B.V., 2018)
      © 2018 Elsevier B.V. Obesity is a major current public health problem worldwide due to the severe co-morbid conditions that this disease entails. The development of obesity-related cardiometabolic disorders is in direct ...
    • Beta2-adrenergic receptor regulates cardiac fibroblast autophagy and collagen degradation 

      Aránguiz Urroz, Pablo Daniel; Canales, Jimena; Copaja, Miguel; Troncoso, Rodrigo; Vicencio Bustamante, José Miguel; Carrillo, Constanza; Lara, Hernán; Lavandero González, Sergio; Díaz Araya, Guillermo (2011)
      Autophagy is a physiological degradative process key to cell survival during nutrient deprivation, cell differentiation and development. It plays a major role in the turnover of damaged macromolecules and organelles, and ...
    • 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 ...
    • Cardiovascular autophagy concepts, controversies, and perspectives 

      Lavandero González, Sergio; Troncoso, Rodrigo; Rotherme, Beverly; Martinet, Wim; Sadoshima, Junichi; Hill, Joseph (Taylor and Francis Inc., 2013)
      Despite recent scientific and technological advances, cardiovascular disease remains the leading cause of morbidity and mortality worldwide. Autophagy, an evolutionarily ancient response to cellular stress, has been ...
    • Dexamethasone-induced autophagy mediates muscle atrophy through mitochondrial clearance 

      Troncoso, Rodrigo; Paredes, Felipe; Parra, Valentina; Gatica, Damián; Vásquez Trincado, César Alonso; Quiroga, Clara; Bravo Sagua, Roberto; López Crisosto, Camila; Rodriguez, Andrea E.; Oyarzún, Alejandra P.; Kroemer, Guido; Lavandero González, Sergio (Taylor and Francis Inc., 2014)
      Glucocorticoids, such as dexamethasone, enhance protein breakdown via ubiquitin-proteasome system. However, the role of autophagy in organelle and protein turnover in the glucocorticoid-dependent atrophy program remains ...
    • Effects of carvedilol on functional capacity, left ventricular function, catecholamines and oxidative stress in patients with chronic heart failure Efectos del carvedilol en la capacidad funcional, función ventricular izquierda, catecolaminas y estrés oxi 

      Castro, Pablo; Pérez, Osvaldo; Greig, Douglas; Díaz Araya, Guillermo; Moraga, Francisco; Chiong Lay, Mario; Troncoso, Rodrigo; Padilla, Ivonne; Vukasovic, Jose L.; Corbalán, Ramón; Lavandero González, Sergio (Ediciones Doyma, S.L., 2004)
      Introduction and objective. Carvedilol is an antioxidant and adrenergic antagonist with demonstrated benefits in terms of mortality from heart failure (HF). The aim of the present study was to evaluate clinical parameters, ...
    • Effects of carvedilol on oxidative stress and chronotropic response to exercise in patients with chronic heart failure 

      Castro, Pablo; Mc-Nab, Pablo; Quintana, Juan Carlos; Bittner, Alex; Greig, Douglas; Vergara, Ismael; Vukasovic Ramírez, José Luis; Corbalán, Ramón; Copaja, Miguel; Díaz Araya, Guillermo; Chiong Lay, Mario; Troncoso, Rodrigo; Alcaíno Gálvez, Hernán Alejandro; Lavandero González, Sergio (ELSEVIER SCIENCE BV, 2005-10)
      Background: Our previous studies suggest that the increase in heart rate from rest to peak exercise is reduced in patients with chronic heart failure (CHF) and this is associated with increased oxidative stress, as determined ...
    • Energy-preserving effects of IGF-1 antagonize starvation-induced cardiac autophagy 

      Troncoso, Rodrigo; Vicencio, José Miguel; Parra, Valentina; Nemchenko, Andriy; Kawashima, Yuki; Campo, Andrea del; Toro, Barbra; Battiprolu, Pavan K.; Aranguiz, Pablo; Chiong Lay, Mario; Yakar, Shoshana; Gillette, Thomas G.; Hill, Joseph A.; Abel, Evan Dale; LeRoith, Derek; Lavandero González, Sergio (European Society of Cardiology, 2012)
      Aims Insulin-like growth factor 1 (IGF-1) is known to exert cardioprotective actions. However, it remains unknown if autophagy, a major adaptive response to nutritional stress, contributes to IGF-1-mediated cardioprotec ...
    • Gln27→Gluβ2-adrenergic receptor polymorphism in heart failure patients: Differential clinical and oxidative response to carvedilol 

      Troncoso, Rodrigo; Moraga, Francisco; Chiong Lay, Mario; Roldán, Juan; Bravo, Roberto; Valenzuela, Rodrigo; Díaz Araya, Guillermo; Del Campo, Andrea; Sanhueza, Carlos; Rodriguez, Andrea; Vukasovic, José Luis; Mellado, Rosemarie; Greig, Douglas; Castro, Pablo F.; Lavandero González, Sergio (2009)
      We investigated the clinical response of chronic heart failure patients with β2-adrenergic receptor Gln27→Glu polymorphism treated for 6 months with carvedilol, a α/β-antagonist with antioxidant properties. The 6-min. walk ...
    • Glucose deprivation causes oxidative stress and stimulates aggresome formation and autophagy in cultured cardiac myocytes 

      Marambio, Paola; Toro, Barbra; Sanhueza, Carlos; Troncoso, Rodrigo; Parra, Valentina; Verdejo, Hugo; García Nannig, Lorena; Quiroga, Clara; Munafo, Daniela; Díaz Elizondo, Jessica; Bravo Sagua, Roberto; González Burgos, María Julieta; Díaz Araya, Guillermo; Pedrozo Cibils, Zully; Chiong Lay, Mario; Co (2010)
      Aggresomes are dynamic structures formed when the ubiquitin-proteasome system is overwhelmed with aggregation-prone proteins. In this process, small protein aggregates are actively transported towards the microtubule-organizing ...
    • Habilidades de procesamiento auditivo en niños con trastorno específico del lenguaje de 7 a 10 años 11 meses pertenecientes a un proyecto de integración de la Región Metropolitana 

      Araya Estay, Paula; Castro Navia, Marcela; Cuadra Rojas, Kimberli; Guerrero Troncoso, Rodrigo (Universidad de Chile, 2014)
      Variados son los estudios que plantean una asociación entre el Trastorno Específico del Lenguaje (TEL) y alteraciones en el Procesamiento Auditivo (PA). Sin embargo, en la mayoría de estas investigaciones no se consideran ...
    • Heart energy metabolism and its role in the treatment of heart failure Metabolismo energético del corazón y sus proyecciones en el tratamiento de la insuficiencia cardíaca 

      Castro, Pablo; Gabrielli, Luigi; Verdejo, Hugo; Greig, Douglas; Mellado, Rosemarie; Concepción, Roberto; Sepulveda, Luis; Vukasovic, José Luis; García, Lorena; Pizarro, Marcela; Pivet, Deisy; Carrillo, Constanza; Tapia, Fabiola; Navarro, Mario; Troncoso, Rodrigo; Baraon (2010)
      It is unknown why heart failure progresses even when patients are treated with the best therapy available. Evidences suggest that heart failure progression is due to loss of neurohumoral blockade in advanced stages of the ...
    • Herp depletion protects from protein aggregation by up-regulating autophagy 

      Quiroga, Clara; Gatica, Damián; Paredes, Felipe; Bravo, Roberto; Troncoso, Rodrigo; Pedrozo Cibils, Zully; Rodríguez, Andrea E.; Toro, Barbra; Chiong Lay, Mario; Vicencio Bustamante, José Manuel; Hetz Flores, Claudio; Lavandero González, Sergio (Elsevier, 2013)
      Herp is an endoplasmic reticulum (ER) stress inducible protein that participates in the ER-associated protein degradation (ERAD) pathway. However, the contribution of Herp to other protein degradation pathways like autophagy ...
    • Herpud1 impacts insulin-dependent glucose uptake in skeletal muscle cells by controlling the Ca2+-calcineurin-Akt axis 

      Navarro Márquez, Mario F.; Torrealba, Natalia; Troncoso, Rodrigo; Vásquez Trincado, César Alonso; Rodriguez, Marcelo; Morales, Pablo E.; Villalobos, Elisa; Eura, Yuka; Garcia, Lorena; Chiong Lay, Mario; Klip, Amira; Jaimovich Pérez, Enrique; Kokame, Koichi; Lavandero González, Sergio (Elsevier B.V., 2018)
      © 2018 Elsevier B.V. Skeletal muscle plays a central role in insulin-controlled glucose homeostasis. The molecular mechanisms related to insulin resistance in this tissue are incompletely understood. Herpud1 is an endoplasmic ...
    • HERPUD1 protects against oxidative stress-induced apoptosis through downregulation of the inositol 1,4,5-trisphosphate receptor 

      Paredes, Felipe; Parra, Valentina; Torrealba, Natalia; Navarro Márquez, Mario F.; Gatica, Damián; Bravo Sagua, Roberto; Troncoso, Rodrigo; Pennanen, Christian; Quiroga, Clara; Chiong Lay, Mario; Caesar, Christa; Taylor, W. Robert; Molgó, Jordi; San Martín, Alejandra; Jaimovich Pérez, Enrique; Lavandero González, Sergio (Elsevier, 2016)
      Homocysteine-inducible, endoplasmic reticulum (ER) stress-inducible, ubiquitin-like domain member 1 (HERPUD1), an ER resident protein, is upregulated in response to ER stress and Ca2(+) homeostasis deregulation. HERPUD1 ...
    • Herpudl impacts insulin-dependent glucose uptake in skeletal muscle cells by controlling the Ca2+-calcineurin-Akt axis 

      Navarro Márquez, Mario F.; Torrealba, Natalia; Troncoso, Rodrigo; Vásquez Trincado, César; Rodríguez, Marcelo; Morales, Pablo E.; Villalobos, Elisa; Eura, Yuka; García Nannig, Lorena; Chiong Lay, Mario; Klip, Amira; Jaimovich Pérez, Enrique; Kokame, Koichi; Lavandero González, Sergio (Elsevier, 2018)
      Skeletal muscle plays a central role in insulin-controlled glucose homeostasis. The molecular mechanisms related to insulin resistance in this tissue are incompletely understood. Herpud1 is an endoplasmic reticulum membrane ...
    • Hyperosmotic stress-dependent NF kappa B activation is regulated by reactive oxygen species and IGF-1 in cultured cardiomyocytes 

      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 ...