Browsing by Author "XX677197"
Now showing items 1-20 of 20
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Toledo Araya, Héctor; Villafaena, Carlos; Valenzuela, Manuel; López Solís, Remigio (WILEY-BLACKWELL, 2012-02)Background: Helicobacter pylori colonizes the gastric mucosa and must survive the acid pH of that environment. Like other enteric bacterial pathogens, including Salmonella enterica, H. pylori develops an acid tolerance ...
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Arias Calderón, Manuel; Almarza, Gonzalo; Díaz Vegas, Alexis; Contreras Ferrat, Ariel Eduardo; Valladares Ide, Denisse; Casas Atala, Mariana; Toledo Araya, Héctor; Jaimovich Pérez, Enrique; Buvinic Radic, Sonja (Biomed Central, 2016)Background: Electrical activity regulates the expression of skeletal muscle genes by a process known as “ excitation-transcription” (E-T) coupling. We have demonstrated that release of adenosine 5′-triphosphate (ATP) ...
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Díaz Gómez, Roberto; López Solís, Remigio; Obreque Slier, Elías; Toledo Araya, Héctor (Elsevier, 2013)The antimicrobial effect of gallic acid and catechin on Helicobacter pylori cultures was investigated. The antimicrobial effect was evaluated by measuring the absorbance of liquid culture media at 600 nm, by an agar-well ...
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Linossier, Alfredo G.; Valenzuela, Carlos Y.; Toledo Araya, Héctor (MEDICINA ORAL S L, 2008-09)Objective: to compare the concentration and serotype of Streptococcus mutans in saliva of Down syndrome (DS), mental retarded (MR) and healthy control (C) individuals of the Region Metropolitana Sur of Santiago of Chile. ...
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Almarza, Oscar; Núñez, Daniel; Toledo Araya, Héctor (Wiley-Blackwell, 2015)Background: Bacterial genomes are compacted by association with histonelike proteins to form a complex known as bacterial chromatin. The histonelike protein HU is capable of binding and bending the DNA molecule, a function ...
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Efecto antibacteriano de kaempferol y (-) -epicatequina sobre Helicobacter pylori y escherichia coli Escandón Villalobos, Ricardo Antonio (Universidad de Chile, 2013)Los compuestos fenólicos provienen del metabolismo secundario de las plantas y se les ha asociado con propiedades antibacterianas. Entre las bacterias mas estudiadas por su alta prevalencia y efectos detrimentales sobre ...
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Efecto antibacteriano del ácido gálico y de la catequina sobe Helicobacter pylori y Escherichia coli Díaz Gómez, Roberto Octavio (Universidad de Chile, 2012)Los polifenoles son compuestos generados a partir del metabolismo secundario de las plantas que presentan entre otras, actividad antibacteriana. Entre los polifenoles se encuentra el ácido gálico (no flavonoide) y la ...
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Álvarez, Rudy; Araya, Héctor; Navarro Lisboa, Rosa; López de Dicastillo, Carol (Faculty Food Technology Biotechnology, 2016)Fruits and vegetables are considered a good source of polyphenols and antioxidant capacities which are beneficial in protecting the human body against damage induced by reactive species. The objective of this work is to ...
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Serrano, Carolina; Villagr án, Andrea; Toledo Araya, Héctor; Crabtree, Jean; Harris, Paul (Wiley, 2016)Helicobacter pylori infection has been associated with an imbalance of iron homeostasis. IL-1b has been related with iron absorption disturbances through a variety of mechanisms. The aim of this study was to evaluate ...
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Alvarez, Alhejandra; Uribe, Felipe; Canales, Jimena; Romero, Cristóbal; Soza, Andrea; Peña, María A.; Antonelli Anativia, Juan; Almarza, Oscar; Cerda Arancibia, Óscar; Toledo Araya, Héctor (Frontiers Media SA, 2017)In order to establish infection, bacterial pathogens modulate host cellular processes by using virulence factors, which are delivered from the bacteria to the host cell leading to cellular reprogramming. In this context, ...
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Microdesiccates produced from normal human tears display four distinctive morphological components López Solís, Remigio; Traipe Castro, Leonidas; Salinas Toro, Daniela; Srur, Miguel; Toledo Araya, Héctor (2013)Desiccation of human tears on glass surfaces results in fern-like crystalloids. This phenomenon has been associated with tear normality (Tear Ferning Test, TFT) and is used as a diagnostic aid to evaluate patients with ...
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Garrido, Leonardo; Toledo Araya, Héctor (BLACKWELL PUBLISHING, 2007-10)Helicobacter pylori is a pathogenic bacterium that infects a half of the human population. In Chile, between 55% and 79% of people are colonized by H. pylori . At present, therapeutic strategies to eradicate the ...
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Phenolic composition of skins from four Carmenet grape varieties (Vitis vinifera L.) during ripening Obreque Slier, Elías; Peña Neira, Álvaro; López Solís, Remigio; Cáceres Mella, Alejandro; Toledo Araya, Héctor; López Rivera, Américo (Elsevier, 2013)Phenolic composition of skins from Vitis vinifera L. cv Carménère (CA), Merlot (M), Cabernet Franc (CF) and Cabernet Sauvignon (CS) grapes during ripening was evaluated by HPLC-DAD and spectrophotometric analysis. At the ...
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Vallejos M., Cristian; Garrido O., Leonardo; Cáceres Lillo, Dante; Madrid Silva, Ana; Defilippi Guerra, Claudia; Defilippi Cafri, Carlos; Toledo Araya, Héctor (2007)Background: Helicobacter pylori is a pathogenic bacterium That infects a significant number of individuals. At present, therapeutic strategies to eradicate this bacterium depend on our knowledge of its resistance to ...
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Toledo Araya, Héctor; Defilippi Cafri, Carlos; Madrid Silva, Ana; Defilippi Guerra, Claudia; Vallejos M., Cristián; Cáceres Lillo, Dante; Venegas Santos, Mauricio (2007)Background: Helicobacter pylori is a pathogenic bacterium that infects a significant number of individuals. In Chile about 79% of the population is colonized. Aims: This study evaluate the prevalence of the H. pylori ...
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Traipe Salas, Felipe; Traipe Castro, Leonidas; Salinas Toro, Daniela; López, Daniela; Valenzuela, Felipe; Cartes, Christian; Toledo Araya, Héctor; Pérez, Claudio; López Solís, Remigio (Sociedad de Biología de Chile, 2016)Background: Tear desiccation on a glass surface followed by transmitted-light microscopy has served as diagnostic test for dry eye. Four distinctive morphological domains (zones I, II, III and transition band) have been ...
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Toledo Araya, Héctor; Alvarez A., José Miguel; Uribe, F.; Canales, J.; Canto, N.; Cerda Arancibia, Óscar (Wiley, 2017)
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Acevedo Acevedo, Mónica; Arbildua, José J.; Monasterio Opazo, Octavio; Toledo Araya, Héctor; León Decap, Oscar (ELSEVIER, 2010)X-ray diffraction data on a few retroviral integrases show a flexible loop near the active site. By sequence alignment, the peptide region 207–218 of Mo-MLV IN appears to correspond to this flexible loop. In this study, ...
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Toledo Araya, Héctor; López Solís, Remigio (2010)Objectives: Since high-level tetracycline resistance in Helicobacter pylori has been associated with a AGA926– 928!TTC substitution in the 16S rRNA genes rrnA/B, the aim of the study was to screen for tetracycline ...
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Cáceres Lluch, Mónica; Ortiz, Liliana; Recabarren, Tatiana; Romero, Aníbal; Colombo Flores, Alicia; Leiva Salcedo, Elías; Varela Lekanda, Diego; Rivas, José; Silva, Ian; Morales, Diego; Campusano, Camilo; Almarza, Óscar; Simon, Felipe; Toledo Araya, Héctor; Park, Kang-Sik; Trimmer, James S.; Cerda, Óscar (Public Library Science, 2015)Cellular migration and contractility are fundamental processes that are regulated by a variety of concerted mechanisms such as cytoskeleton rearrangements, focal adhesion turnover, and Ca2+ oscillations. TRPM4 is a ...