Universidad Mayor (Chile): últimos ingresos

Mostrando ítems 3021-3040 de 7087

    • Distributional ecology of Andes hantavirus: a macroecological approach 

      Astorga, Francisca [Univ Mayor, Fac Ciencias, Campus Huechuraba, Santiago]; Escobar, Luis E.; Poo-Muñoz, Daniela; Escobar-Dodero, Joaquín; Rojas-Hucks, Sylvia; Alvarado-Rybak, Mario; Duclos, Melanie; Romero-Alvarez, Daniel; Molina-Burgos, Blanca E.; Penafiel-Ricaurte, Alexandra; Toro, Frederick; Pena-Gómez, Francisco T.; Peterson, A. Townsend (BIOMED CENTRAL LTD, 2018)
      Background: Hantavirus pulmonary syndrome (HPS) is an infection endemic in Chile and Argentina, caused by Andes hantavirus (ANDV). The rodent Oligoryzomys longicaudatus is suggested as the main reservoir, although several ...

    • Mechanical and thermal properties of friction-stir welded joints of high density polyethylene using a non-rotational shoulder tool 

      Catalina Restrepo-Zapata, Nora [Univ Mayor, Fac Ciencias, Nucleo Matemat Fis & Estadist, Santiago, Chile]; Moreno-Moreno, Mirley; Macea Romero, Yorledis; Rodríguez Zambrano, Habib; Moreira Afonso, Conrado Ramos; Unfried-Silgado, Jimy (SPRINGER LONDON LTD, 2018)
      The effects of rotational and welding speed on the mechanical properties and thermal behavior in friction stir welded joints of high-density polyethylene using a non-rotational shoulder have been investigated experimentally. ...

    • Small eukaryotic phytoplankton communities in tropical waters off Brazil are dominated by symbioses between Haptophyta and nitrogen-fixing cyanobacteria 

      Lopes dos Santos, Adriana [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Camino La Piramide 5750, Santiago, Chile]; Ribeiro, Catherine Gerikas; Marie, Dominique; Brandini, Frederico Pereira; Vaulot, Daniel (NATURE PUBLISHING GROUP, 2018)
      Symbioses between eukaryotic algae and nitrogen-fixing cyanobacteria have been recognized in recent years as a key source of new nitrogen in the oceans. We investigated the composition of the small photosynthetic eukaryote ...

    • Influence of fatigue and velocity on the latency and recruitment order of scapular muscles 

      Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; Méndez-Rebolledo, Guillermo; Gática-Rojas, Valeska; Guzmán-Muñoz, Eduardo; Guzmán-Venegas, Rodrigo; Berral de la Rosa, Francisco José (CHURCHILL LIVINGSTONE, 2018)
      Objectives: To determine the influence of velocity and fatigue on scapular muscle activation latency and recruitment order during a voluntary arm raise task, in healthy individuals. Design: Cross-sectional study. Setting: ...

    • Bartonella vinsonii subsp. berkhoffii and B. henselae in dogs 

      Bittencourt, Pedro [Univ Mayor, Fac Ciencias, Escuela Med Vet, Santiago, Chile]; Mueller, A.; Soto, F.; Sepúlveda, M.; Benevenute, J. L.; Ikeda, P.; Machado, R. Z.; Andre, M. R. (CAMBRIDGE UNIV PRESS, 2018)
      This study aimed to molecularly survey Bartonella in dogs from Chile. Quantitative real-time PCR (qPCR) for Bartonella spp. based on nuoG gene was performed in 139 blood samples taken from dogs belonging to rural localities ...

    • Variation of the alkaloid content of Peumus boldus (boldo) 

      Fuentes-Barros, Gonzalo [Univ Mayor, Escuela Ingn Forestal, Santiago, Chile]; Castro-Saavedra, Sebastián [Univ Mayor, Escuela Ingn Forestal, Santiago, Chile]; Liberona, Leonel; Acevedo-Fuentes, Williams; Tirapegui, Cristián; Mattar, César; Cassels, Bruce K. (ELSEVIER SCIENCE BV, 2018)
      Eighteen alkaloids were detected in the bark, leaves, wood and roots of Peumus boldus, including traces of secoboldine, N-methylsecoboldine (boldine methine), glaucine and norreticuline, not reported previously as constituents ...

    • Distinctive Archaeal Composition of an Artisanal Crystallizer Pond and Functional Insights Into Salt-Saturated Hypersaline Environment Adaptation 

      Trefault, Nicole [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Santiago, Chile]; Plominsky, Alvaro M.; Henriquez-Castillo, Carlos; Delherbe, Nathalie; Podell, Sheila; Ramírez-Flandes, Salvador; Ugalde, Juan A.; Santibañez, Juan F.; van den Engh, Ger; Hanselmann, Kurt; Ulloa, Osvaldo; De la Iglesia, Rodrigo; Allen, Eric E. (FRONTIERS MEDIA SA, 2018)
      Hypersaline environments represent some of the most challenging settings for life on Earth. Extremely halophilic microorganisms have been selected to colonize and thrive in these extreme environments by virtue of a broad ...

    • Association of physical inactivity with obesity, diabetes, hypertension and metabolic syndrome in the chilean population 

      Celis-Morales, Carlos A. [Univ Mayor, CIFE, Santiago, Chile]; Díaz-Martínez, Ximena; Petermann, Fanny; María Leiva, Ana; Garrido-Méndez, Alex; Salas-Bravo, Carlos; Adela Martínez, María; María Labrana, Ana; Durán, Eliana; Valdivia-Moral, Pedro; Luisa Zagalaz, María; Poblete-Valderrama, Felipe; Alvarez, Cristián (SOC MEDICA SANTIAGO, 2018)
      Background: Physical inactivity is an important cardiovascular risk factor. Aim: To investigate the association of physical inactivity with obesity, metabolic markers, type 2 diabetes mellitus, hypertension and metabolic ...

    • Homozygous mutation in CEP19, a gene mutated in morbid obesity, in Bardet-Biedl syndrome with predominant postaxial polydactyly 

      Woehlbier, Ute [Univ Mayor, Ctr Integrat Biol, Fac Sci, Santiago, Chile]; Bolukbasi, Esra Yildiz; Mumtaz, Sara; Afzal, Muhammad; Malik, Sajid; Tolun, Aslihan (BMJ PUBLISHING GROUP, 2018)
      Background Bardet-Biedl syndrome (BBS) is a ciliopathy with extensive phenotypic variability and genetic heterogeneity. We aimed to discover the gene mutated in a consanguineous kindred with multiple cases of a BBS phenotype. ...

    • High similarity in the microbiota of cold-water sponges of the Genus Mycale from two different geographical areas 

      Trefault, Nicole [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Santiago, Chile]; Cárdenas, César A.; González-Aravena, Marcelo; Font, Alejandro; Hestetun, Jon T.; Hajdu, Eduardo; Malmbergg, Maja; Bongcarn-Rudloff, Erik (PEERJ INC, 2018)
      Sponges belonging to genus Mycale are common and widely distributed across the oceans and represent a significant component of benthic communities in term of their biomass, which in many species is largely composed by ...

    • Rational Development of a Novel Hydrogel as a pH-Sensitive Controlled Release System for Nifedipine 

      Avila-Salas, Fabián [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]; Rodríguez Nuñez, Yeray A.; Marican, Adolfo; Castro, Ricardo I.; Villaseñor, Jorge; Santos, Leonardo S.; Wehinger, Sergio; Durán-Lara, Esteban F. (MDPI, 2018)
      This work depicts the rational development (in-silico design, synthesis, characterization and in-vitro evaluation) of polyvinyl alcohol hydrogels (PVAH) cross-linked with maleic acid (MA) and linked to gamma-cyclodextrin ...

    • Cryopreservation induces mitochondrial permeability transition in a bovine sperm model 

      Treulen, Favian [Univ Mayor, Sch Med Technol, Fac Sci, Temuco, Chile]; Aguila, Luis [Univ Mayor, Sch Med Technol, Fac Sci, Temuco, Chile]; Aguila, Luis; Uribe, Pamela; Felmer, Ricardo (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2018)
      When the mitochondria of somatic cells are exposed to pathological calcium overload, these trigger mitochondrial permeability transition (MPT) leading to mitochondrial dysfunction and cell death. Cryopreservation procedures ...

    • Unraveling the role of motoneuron autophagy in ALS 

      Nassif, Melissa [Univ Mayor, Fac Sci, CIB, Santiago, Chile]; Valenzuela, Vicente; Hetz, Claudio (TAYLOR & FRANCIS INC, 2018)
      In recent years, the role of autophagy in the pathogenesis of most neurodegenerative diseases has transitioned into a limbo of protective or detrimental effects. Genetic evidence indicates that mutations in autophagy-regulatory ...

    • Protein capped nanosilver free radical oxidation: role of biomolecule capping on nanoparticle colloidal stability and protein oxidation 

      Ahumada, Manuel [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]; Bohne, Cornelia; Oake, Jessy; Alarcón, Emilio, I (ROYAL SOC CHEMISTRY, 2018)
      We studied the effect of human serum albumin protein capped spherical nanosilver on the nanoparticle stability upon peroxyl radical oxidation. The nanoparticle-protein composite is less prone to oxidation compared to the ...

    • Next Generation Sequencing and mass spectrometry reveal high taxonomic diversity and complex phytoplankton-phycotoxins patterns in Southeastern Pacific fjords 

      Moreno-Pino, Mario [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Camino Piramide 5750, Santiago, Chile]; Krock, Bernd; De la Iglesia, Rodrigo; Pizarro, Gemita; Vásquez, Mónica (PERGAMON-ELSEVIER SCIENCE LTD, 2018)
      In fjord systems, Harmful Algal Blooms (HABs) not only constitute a serious problem when affecting the wildlife and ecosystems, but also human health and economic activities related to the marine environment. This is mostly ...

    • Sensitivity analysis of geometrical parameters to study haemodynamics and thrombus formation in the left atrial appendage 

      Morales, Hernán G. [Univ Mayor, Fac Ciencias, Ctr Invest Fisiol Ejercicio, Santiago, Chile]; García-Isla, Guadalupe; Luis Olivares, Andy; Silva, Etelvino; Nuñez-García, Marta; Butakoff, Constantine; Sánchez-Quintana, Damián; Freixa, Xavier; Noailly, Jerome; De Potter, Tom; Cámara, Oscar (WILEY, 2018)
      The left atrial appendage (LAA) is a complex and heterogeneous protruding structure of the left atrium (LA). In atrial fibrillation patients, it is the location where 90% of the thrombi are formed. However, the role of the ...

    • Differences in neuromuscular activity of ankle stabilizing muscles during postural disturbances: A gender-specific analysis 

      Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; Mueller, Juliane; Stoll, Joséfine; Mueller, Steffen; Engel, Tilman; Mayer, Frank (ELSEVIER IRELAND LTD, 2018)
      The purpose was to examine gender differences in ankle stabilizing muscle activation during postural disturbances. Seventeen participants (9 females: 27 +/- 2yrs., 1.69 +/- 0.1 m, 63 +/- 7 kg; 8 males: 29 +/- 2yrs., 1.81 ...

    • Correlates of sedentary behaviors in Chile: evidence from the National Health Survey 2009-2010 

      Celis-Morales, Carlos A. [Univ Mayor, CIFE, Santiago, Chile]; Adela Martínez, María; Leiva, Ana María; Petermann, Fanny; Garrido, Alex; Díaz, Ximena; Alvarez, Cristián; Salas, Carlos; Cristi, Carlos; Rodríguez, Fernando; Aguilar, Nicolás; Ramírez, Rodrigo (SOC MEDICA SANTIAGO, 2018)
      Background: Sedentary behaviors are one of the major risk factors for cardiovascular diseases. Aim: To identify factors associated with high sedentary behaviors in the Chilean population. Material and Methods: We included ...

    • The Antidiabetic Agent Sodium Tungstate Induces Abnormal Glycogen Accumulation in Renal Proximal Tubules from Diabetic IRS2-Knockout Mice 

      Gatica, Rodrigo [Univ Mayor, Fac Ciencias, Escuela Vet, Santiago, Chile]; Bertinat, Romina; Westermeier, Francisco; Silva, Pamela; Moitinho Oliveira, Joana; Nualart, Francisco; Gomis, Ramon; Yañez, Alejandro J. (HINDAWI LTD, 2018)
      The kidney is an insulin-sensitive organ involved in glucose homeostasis. One major effect of insulin is to induce glycogen storage in the liver and muscle. However, no significant glycogen stores are detected in normal ...

    • Growth of Ni nanoclusters on irradiated graphene: a molecular dynamics study 

      González, Rafael I. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Santiago, Chile]; Valencia, Felipe J. [Univ Mayor, Fac Ciencias, Nucl Matemat Fis & Estadit]; Hernández-Vázquez, E. E.; Bringa, E. M.; Moran-López, J. L.; Rogan, J.; Muñoz, F. (ROYAL SOC CHEMISTRY, 2018)
      We studied the soft landing of Ni atoms on a previously damaged graphene sheet by means of molecular dynamics simulations. We found a monotonic decrease of the cluster frequency as a function of its size, but few big ...