Now showing items 1-20 of 25

    • Acoplamiento espacial entre el retículo endoplásmico y la red mitocondrial durante el estrés de retículo endoplásmico 

      Bravo Sagua, Roberto (Universidad de ChileCyberDocs, 2009)
      El estrés en el retículo endoplásmico (RE) genera señales hacia el núcleo y citoplasma, reorganizando la homeostasis proteica e interviniendo en la decisión de vida o muerte celular. A pesar de ser ampliamente estudiada, ...
    • 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 ...
    • Calcium sensing receptor as a novel mediator of adipose tissue dysfunction: mechanisms and potential clinical implications 

      Bravo Sagua, Roberto; Mattar, Pamela; Díaz, Ximena; Lavandero González, Sergio; Cifuentes, Mariana (Frontiers Media, 2016)
      Obesity is currently a serious worldwide public health problem, reaching pandemic levels. For decades, dietary and behavioral approaches have failed to prevent this disease from expanding, and health authorities are ...
    • 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 ...
    • Caveolin-1 impairs PKA-DRP1-mediated remodelling of ER–mitochondria communication during the early phase of ER stress 

      Bravo Sagua, Roberto; Parra, Valentina; Ortiz-Sandoval, Carolina; Navarro Márquez, Mario F.; Rodríguez, Andrea E.; Díaz Valdivia, Natalia; Sanhueza, Carlos; López Crisosto, Camila; Tahbaz, Nasser; Rothermel, Beverly A.; Hill, Joseph A.; Cifuentes, Mariana; Simmen, Thoma (Nature Publishing Group, 2018)
      © 2018, ADMC Associazione Differenziamento e Morte Cellulare. Close contacts between endoplasmic reticulum and mitochondria enable reciprocal Ca2+ exchange, a key mechanism in the regulation of mitochondrial bioenergetics. ...
    • Defective insulin signaling and mitochondrial dynamics in diabetic cardiomyopathy 

      Westermeier, Francisco; Navarro Márquez, Mario F.; López Crisosto, Camila; Bravo Sagua, Roberto; Quiroga Lagos, Clara; Bustamante, Mario; Verdejo, Hugo E.; Zalaquett, Ricardo; Ibacache, Mauricio; Parra Ortíz, María Valentina; Castro, Pablo F.; Rothermel, Beverly A.; Hill, Joseph A.; Lavandero González, Sergio (Elsevier, 2015)
      Diabetic cardiomyopathy (DCM) is a common consequence of longstanding type 2 diabetes mellitus (T2DM) and encompasses structural, morphological, functional, and metabolic abnormalities in the heart.Myocardial energy metabolism ...
    • 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 ...
    • Endoplasmic reticulum: ER stress regulates mitochondrial bioenergetics 

      Bravo Sagua, Roberto; Gutiérrez, Tomás; Paredes, Felipe; Gatica, Damián; Rodríguez, Andrea E.; Pedrozo Cibils, Zully; Chiong Lay, Mario; Parra, Valentina; Quest, Andrew F. G.; Rothermel, Beverly A.; Lavandero González, Sergio (Elsevier, 2012)
      Endoplasmic reticulum (ER) stress activates an adaptive unfolded protein response (UPR) that facilitates cellular repair, however, under prolonged ER stress, the UPR can ultimately trigger apoptosis thereby terminating damaged ...
    • ER-to-mitochondria miscommunication and metabolic diseases 

      López Crisosto, Camila; Bravo Sagua, Roberto; Rodríguez Peña, Marcelo; Mera, Claudia; Castro, Pablo F.; Quest, Andrew F. G.; Rothermel, Beverly A.; Cifuentes, Mariana; Lavandero González, Sergio (Elsevier, 2015)
      © 2015 Elsevier B.V.. Eukaryotic cells contain a variety of subcellular organelles, each of which performs unique tasks. Thus follows that in order to coordinate these different intracellular functions, a highly dynamic ...
    • 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 ...
    • 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 ...
    • Inhibition of mitochondrial fission prevents hypoxia-induced metabolic shift and cellular proliferation of pulmonary arterial smooth muscle cells 

      Parra Ortíz, María Valentina; Bravo Sagua, Roberto; Norambuena Soto, Ignacio; Hernández Fuentes, Carolina; Gómez Contreras, Andrés; Verdejo, Hugo E.; Mellado, Rosemarie; Chiong Lay, Mario; Lavandero González, Sergio; Castro, Pablo F. (Elsevier, 2017)
      Chronic hypoxia exacerbates proliferation of pulmonary arterial smooth muscle cells (PASMC), thereby reducing the lumen of pulmonary arteries. This leads to poor blood oxygenation and cardiac work overload, which are the ...
    • Mitochondrial dynamics: A potential new therapeutic target for heart failure Dinámica mitocondrial: un potencial nuevo blanco terapéutico para la insuficiencia cardiaca 

      Kuzmicic, Jovan; Del Campo, Andrea; López Crisosto, Camila; Morales, Pablo E.; Pennanen, Christian; Bravo Sagua, Roberto; Hechenleitner, Jonathan; Zepeda, Ramiro; Castro, Pablo F.; Verdejo, Hugo E.; Parra, Valentina; Chiong Lay, Mario; Lavandero González, Sergio (2011)
      Mitochondria are dynamic organelles able to vary their morphology between elongated interconnected mitochondrial networks and fragmented disconnected arrays, through events of mitochondrial fusion and fission, respectively. ...
    • Mitochondrial fragmentation impairs insulin-dependent glucose uptake by modulating Akt activity through mitochondrial Ca2+ uptake 

      Del Campo Sfeir, Andrea Estefanía; Parra Ortíz, María Valentina; Vásquez Trincado, César Alonso; Gutiérrez, Tomás; Morales, Pablo E.; López Crisosto, Camila; Bravo Sagua, Roberto; Navarro Márquez, Mario F.; Verdejo, Hugo E.; Contreras Ferrat, Ariel Eduardo; Troncoso Cotal, Rodrigo; Chiong Lay, Mario; Lavandero González, Sergio (American Physiological Society, 2014)
      Insulin is a major regulator of glucose metabolism, stimulating its mitochondrial oxidation in skeletal muscle cells. Mitochondria are dynamic organelles that can undergo structural remodeling in order to cope with these ...
    • Mitochondrial fragmentation impairs insulin-dependent glucose uptake by modulating Akt activity through mitochondrial Ca2+ uptake 

      Del Campo, Andrea; Parra, Valentina; Vásquez Trincado, César Alonso; Gutiérrez, Tomás; Morales, Pablo E.; López Crisosto, Camila; Bravo Sagua, Roberto; Navarro Márquez, Mario F.; Verdejo, Hugo E.; Contreras Ferrat, Ariel Eduardo; Troncoso, Rodrigo; Chiong Lay, Mario; Lavandero González, Sergio (2014)
      Insulin is a major regulator of glucose metabolism, stimulating its mitochondrial oxidation in skeletal muscle cells. Mitochondria are dynamic organelles that can undergo structural remodeling in order to cope with these ...
    • mTORC1 inhibitor rapamycin and ER stressor tunicamycin induce differential patterns of ER-mitochondria coupling 

      Bravo Sagua, Roberto; López Crisosto, Camila; Parra Ortíz, María Valentina; Rodríguez Peña, Marcelo; Rothermel, Beverly A.; Quest, Andrew F. G.; Lavandero González, Sergio (Nature, 2016)
      Efficient mitochondrial Ca2+ uptake takes place at contact points between the ER and mitochondria, and represents a key regulator of many cell functions. In a previous study with HeLa cells, we showed that ER-to-mitochondria ...
    • Organelle communication: Signaling crossroads between homeostasis and disease 

      Bravo Sagua, Roberto; Torrealba, Natalia; Paredes, Felipe; Morales, Pablo E.; Pennanen Saavedra, Christian; López Crisosto, Camila; Troncoso, Rodrigo; Criollo Céspedes, Alfredo; Chiong Lay, Mario; Hill, Joseph A.; Simmen, Thomas; Quest, Andrew F. G.; Lavandero González, Sergio (Elsevier, 2014)
      Cellular organelles do not function as isolated or static units, but rather form dynamic contacts between one another that can be modulated according to cellular needs. The physical interfaces between organelles are ...
    • Organelle communication: Signaling crossroads between homeostasis and disease 

      Bravo Sagua, Roberto; Torrealba Cárdenas, Natalia Belén; Paredes, Felipe; Morales, Pablo E.; Pennanen Saavedra, Christian; López Crisosto, Camila; Troncoso Cotal, Rodrigo; Criollo Céspedes, Alfredo; Chiong Lay, Mario; Hill, Joseph A.; Simmend, Thomas; Quest, Andrew F. G.; Lavandero González, Sergio (Elsevier, 2014)
      Cellular organelles do not function as isolated or static units, but rather form dynamic contacts between one another that can be modulated according to cellular needs. The physical interfaces between organelles are ...
    • Prolonged Activation of the Htr2b Serotonin Receptor Impairs Glucose Stimulated Insulin Secretion and Mitochondrial Function in MIN6 Cells 

      Cataldo, Luis Rodrigo; Mizgier, María Luisa; Bravo Sagua, Roberto; Jaña, Fabián; Cárdenas, César; Llanos Vidal, Paola; Busso, Dolores; Olmos, Pablo; Galgani Fuentes, José; Santos, José Luis; Cortés, Víctor A. (Public Library of Science, 2017)
      © 2017 Cataldo et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the ...