Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 39661-39680 of 98912

    • Genetic variability of human metapneumovirus isolated from Chilean children, 2003-2004 
      Escobar, Carola; Luchsinger, Vivian; De Oliveira, Danielle Bruna; Durigon, Edison; Chnaiderman, Jonás; Avendaño, Luis F. (2009)
      Human metapneumovirus (hMPV) is a significant cause of acute lower respiratory tract infection in all age groups, particularly in children. Two genetic groups and four subgroups of hMPV have been described. They co-circulate ...
    • Gln27→Gluβ2-adrenergic receptor polymorphism in heart failure patients: Differential clinical and oxidative ... 
      Troncoso Cotal, 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 ...
    • Role of adenosine transport in gestational diabetes-induced L-arginine transport and nitric oxide synthesis ... 
      Vásquez, Gustavo; Sanhueza, Felipe; Vásquez Salfate, Rodrigo; González, Marcelo; San Martín, Rody; Casanello, Paola; Sobrevia, Luis (2004)
      Gestational diabetes is associated with increased L-arginine transport and nitric oxide (NO) synthesis, and reduced adenosine transport in human umbilical vein endothelial cells (HUVEC). Adenosine increases endothelial ...
    • The impact of Chilean health reform in the management and mortality of ST elevation myocardial infarction ... 
      Nazzal Nazal, Carolina; Campos, Pabla T.; Corbalán, Ramón; Lanas, Fernando Z.; Bartolucci, Jorge J.; Sanhueza, Patricio C.; Cavada Chacón, Gabriel; Prieto, Juan Carlos D. (2008)
      Background: In 2005 the Chilean government started a health care reform (AUGE) that guarantees medical treatment for acute myocardial infarction. Aim: To quantify the impact ofAUGE on the management and inhospital mortality ...
    • Resection gastric bypass in morbid obese patients aged less than 18 and over 65 years Resultados del bypass ... 
      Burgos, Ana María L; Csendes Juhasz, Attila; Papapietro Vallejo, Karin (2008)
      Background: The incidence of morbid obesity is increasing and gastric bypass is the most effective surgical treatment. Aim: To assess the long term results of resection gastric bypass among morbidly obese patients aged ...
    • Síndrome hemolítico urémico en Chile: presentación clínica, evolución y factores pronósticos 
      Zambrano O., Pedro; Delucchi Bicocchi, María Angela; Cavagnaro, Felipe; Hevia Juricic, María del Pilar; Rosati M., María Pía; Lagos R., Elizabeth; Nazal Ch., Vilma; González C., Claudia; Barrera B., Patricia; Álvarez L., Enrique; Pinto S., Viola; Salas del Campo, Paulina; Cano Schuffeneger, Francisco; Contreras M., Angélica; Galanti de la P., Mónica; Gana A., Juan Cristóbal; Zamorano C., Julio; Espinoza B., Amelia; Dreves R., Patricia; Pereira M., Jaime; Bidegain S., Antonia; Pasten P., Ema; Yáñez P., Leticia; Cerda F., Verónica; Rodríguez S., Eugenio; Aglony I., Marlene; Gutiérrez I., Elisa; Salas P., Francisca; Figueroa Y., Sonia; Valenzuela A., Marcela; Grandy H., Jean; Guerra A., Boris; Lapadula A., Michelangelo; Reutter de la M., Paula; Gallardo T., Vivian; Maldonado S., Douglas; Azócar Pruyas, Marta; Cavada Ch., Gabriel (2008)
      Background: Hemolytic-uremic syndrome (HUS) is characterized by acute renal failure, microangiopathic hemolytic anemia and thrombocytopenia. Aim: To describe the characteristics of patients with the diagnosis of HUS in ...
    • Extended prone position ventilation in severe acute respiratory distress syndrome: A pilot feasibility study 
      Romero, Carlos M.; Cornejo, Rodrigo A.; Gálvez, L. Ricardo; Llanos, Osvaldo P.; Tobar, Eduardo A.; Berasaín, M. Angélika; Arellano, Daniel H.; Larrondo, Jorge F.; Castro, José S. (2009)
      Objectives: The aim of the study was to evaluate the safety of extended prone position ventilation (PPV) and its impact on respiratory function in patients with severe acute respiratory distress syndrome (ARDS). Design: ...
    • Role of cytochrome P450 enzymes in the metabolism of antineoplastic drugs Papel de las enzimas citocromo ... 
      Quiñones, Luis S.; Rosero, Mario P.; Roco, Ángela A.; Moreno, Iván T.; Sasso, Jaime A.; Varela, Nelson F.; Cáceres, Dante L.; Saavedra, Iván S. (2008)
      Cytochrome P450 enzymes are very important to metabolize anti-carcinogenic agents. Therefore, understanding the role of these enzymes and their allele variants in the bioactivation or detoxification of drugs could greatiy ...
    • Smoking and Lung Cancer: Attributable risks according to gender Tabaquismo activo y cancer pulmonar: ... 
      Erazo, Marcia B.; Amigo, Hugo C.; Oyarzún, Manuel G.; Peruga, Armando U. (2008)
      Background: The association between Lung Cancer and smoking is well documented. However there is less information about the estimation of its attributable fraction and population burden. Aim: To estímate the attributable ...
    • Pilot study: Tobacco-attributable direct costs in two hospitais in Santiago, Chile Estudio piloto: Costos ... 
      Martínez Gutiérrez, María Soledad; Vanegas, Jairo L.; Reveco, Sandra U.; Valenzuelas, Rodrigo R.; Arteaga, Oscar H. (2008)
      Background: Tobaceo is the fourth cause of the global burden of disease, accounting for 79.9 million loss of disability-adjusted Ufe years (DALYs) in 2001. In 2002, tobacco-attributable mortality in Chile represented 17% ...
    • Novel, continuous visual motion induces c-fos expression in the avian optokinetic nuclei and optic tectum 
      Rojas, X.; Marín, G.; Wallman, J. (2009)
      We studied the stimulus characteristics necessary for the expression of c-fos protein in optokinetic system neurons using immunocytochemistry. Using whole-field visual motion as a stimulus, we found substantial c-fos ...
    • A prospective randomized study comparing patients with morbid obesity submitted to laparotomic gastric ... 
      Csendes Juhasz, Attila; Maluenda, Fernando; Burgos, Ana Maria (2009)
      Background: Visceral fat, especially the greater omentum, seems to be an important factor in the development of some metabolic disturbances such as insulin resistance, hyperglycemia, and dyslipidemia. Therefore, we wanted ...
    • Fraud in the health systems of Chile: A detection model Fraudes a los sistemas de salud en Chile: Un modelo ... 
      Mesa, Francisco R.; Raineri, Andrés; Maturana, Sergio; Kaempffer, Ana María (2009)
      Objectives. To develop a model for detecting cases of organized fraud in Chile based on data from the legal forms for medically authorized leave (formulario legal de licencia médica curativa-MAL) and to establish the ...
    • Energetic costs of detoxification systems in herbivores feeding on chemically defended host plants: A ... 
      Castañeda, Luis E.; Figueroa, Christian C.; Fuentes-Contreras, Eduardo; Niemeyer, Hermann M.; Nespolo, Roberto F. (2009)
      Herbivorous insects have developed mechanisms to cope with plant barriers, including enzymatic systems to detoxify plant allelochemicals. Detoxification systems may be induced when insects are feeding on plants with ...
    • Survival of cervical cancer after three and five years at San Jose Hospital Cáncer de cuello uterino: ... 
      Sepúlveda, Pablo; González C., Fernando; Napolitano, Cayetano R.; Roncone, Enrique; Cavada, Gabriel (2008)
      Background: Cervical cancer is the fifth cause of death by cancer in Chilean women. Objectives: To compare between August 1999 and December 2002 the survival of cervical cancer according to a clinical stage in 3 and 5 years ...
    • Epidemiology of Vibrio parahaemolyticus outbreaks, Southern Chile 
      Harth, Erika; Matsuda, Luis; Hernández, Cristina; Rioseco, Maria L.; Romero Ormazábal, Jaime; González Escalona, Narjol; Martínez Urtaza, Jaime; Espejo Torres, Romilio (2009)
      Disease outbreaks caused by Vibrio parahaemolyticus in Puerto Montt, Chile, began in 2004 and reached a peak in 2005 at 3,600 clinical cases. Until 2006, every analyzed case was caused by the serovar O3:K6 pandemic strain. ...
    • The ever-changing landscape of rotavirus serotypes 
      O'Ryan Gallardo, Miguel (Lippincott Williams and Wilkins, 2009)
      Rotavirus is a double-stranded RNA virus that is characterized by substantial genetic diversity. The various serotypes of rotavirus have been determined by the presence of neutralizing epitopes on the outer capsid of the ...
    • Treatment of blepharospasm and Meige's syndrome with botulinum toxin: Experience and follow-up in 18 cases ... 
      Chana, Pedro; Kunstman, Carolina; Benavldes, Olga; Muñoz, Daniel S.; Tapia-Núñez, John (Sociedad Ecuatoriana de Neurologia, 2008)
      Treatment with botulinum toxin (BT) is a good therapeutic alternative for patients with blepharospasm and Meige's syndrome. We report follow up results of 18 patients with blepharospasm and Meige's syndrome treated with ...
    • Effects of tramadol and dexketoprofen on analgesia and gastrointestinal transit in mice 
      Miranda, H. F.; Puig, M. M.; Romero, M. A.; Prieto, J. C. (2009)
      The purpose of the present study was to evaluate the nature of the antinociceptive interaction among dexketoprofen (DEX), a mixed inhibitor of the cyclo-oxygenases, and tramadol (TRAM), a weak opioid with monoaminergic ...
    • Psychological adaptation in children with idiopathic short stature treated with growth hormone or placebo 
      Ross, Judith L.; Sandberg, David E.; Rose, Susan R.; Leschek, Ellen Werber; Baron, Jeffrey; Chipman, John J.; Cassorla Goluboff, Fernando; Quigley, Charmian A.; Crowe, Brenda J.; Roberts, Kristen; Cutler, Gordon B., Jr. (2004)
      The influence of short stature on psychological adaptation in childhood and adolescence is controversial. GH is currently used to treat children with idiopathic short stature (ISS, also known as non-GH-deficient short ...