Browsing by Author "Sierralta, Walter"
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Rocha, Gladys; Sierralta, Walter; Valladares Boasi, Luis (Sociedad Medica de Santiago, 2016)© 2016, Sociedad Medica de Santiago. All Rights Reserved. Background: The decline of estrogen levels increases cardiovascular risk in women. Platelets express estrogen receptors and 17β-estradiol- (E2) can produce a ...
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Pérez, Hernán; Soto Moyano, Rubén; Ruiz, Samuel; Hernández, Alejandro; Sierralta, Walter; Olivares, Ricardo; Núñez, Héctor; Flores, Osvaldo; Morgan, Carlos; López Valladares, Luis; Gatica, Arnaldo; Flores, Francisco J. (2010)Prenatal undernutrition induces hypertension later in life, possibly by disturbing the hypothalamo-pituitary-adrenal axis through programming decreased expression of hypothalamic glucocorticoid receptors. We examined the ...
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Araya, Magdalena; Núñez, Héctor; Pavez, Leonardo; Arredondo, Miguel; Méndez, Marco; Cisternas, Felipe; Pizarro Aguirre, Fernando; Sierralta, Walter; Uauy Dagach-Imbarack, Ricardo; González, Mauricio (2012)Liver cells respond to copper loading upregulating protective mechanisms. However, to date, except for liver content, there are no good indicators that identify individuals with excess liver copper. We hypothesized that ...
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Araya, Magdalena; Núñez, Héctor; Pavez, Leonardo; Arredondo Olguín, Miguel Armando; Méndez, Marco; Cisternas, Felipe; Pizarro Aguirre, Fernando; Sierralta, Walter; Uauy Dagach-Imbarack, Ricardo; González Canales, Mauricio (American Society for Nutrition, 2012)Liver cells respond to copper loading upregulating protective mechanisms. However, to date, except for liver content, there are no good indicators that identify individuals with excess liver copper. We hypothesized that ...
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Adult hippocampus derived soluble factors induce a neuronal-like phenotype in mesenchymal stem cells Rivera, Francisco J.; Sierralta, Walter; Minguell, José J.; Aigner, Ludwig (ELSEVIER, 2006-10-02)Bone marrow-derived mesenchymal stem cells (MSCs) are not restricted in their differentiation fate to cells of the mesenchymal lineage. They acquire a neural phenotype in vitro and in vivo after transplantation in the ...
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Benavente Arias, Claudia Andrea (Universisdad de Chile, 2002)Este es un estudio de la expresión de los factores anglogenicos por parte de la célula progenitora mesenquimatica que posiblemente estén involucrados en la determinación de la presencia u ausencia de un estado de dormancia ...
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Torres, Crístian; Antileo, Elmer; Epuñán, María José; Pino, Ana María; Valladares Boasi, Luis; Sierralta, Walter (PROFESSOR D A SPANDIDOS, 2008-06)A cyclic peptide derived from the active domain of α-fetoprotein (AFP) significantly inhibited the proliferation of MCF7 cells stimulated with the epidermal growth factor (EGF) or estradiol (E2). The action of these ...
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Hernández, Alejandro; Burgos, Héctor; Mondaca, Mauricio; Barra, Rafael; Núñez, Héctor; Pérez, Hernán; Soto Moyano, Rubén; Sierralta, Walter; Fernández, Victor; Olivares, Ricardo; López Valladares, Luis (Hindawi Publishing Corporation, 2008)Reduction of the protein content from 25 to 8% casein in the diet of pregnant rats results in impaired neocortical long-term potentiation (LTP) of the offspring together with lower visuospatial memory performance. The ...
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Araya, Magdalena; Kelleher, Shannon; Arredondo Olguín, Miguel; Sierralta, Walter; Vial, María Teresa; Uauy Dagach-Imbarack, Ricardo; Lonnerdal, Bo (AMER SOC CLINICAL NUTRITION, 2005-05)Background: Whether infants regulate copper absorption and the potential effects of excess copper in early life remain poorly defined. Objective: The objective of the study was to assess copper retention, liver copper ...
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Del Canto, Felipe; Sierralta, Walter; Kohen Skop, Paulina; Ferrada Muñoz, Alex Eduardo; Strauss, Jerome F.; Devoto, Luigi (Endocrine Society, 2007)Context: The natural process of luteolysis and luteal regression is induced by withdrawal of gonadotropin support. Objective: The objectives of this study were: 1) to compare the functional changes and apoptotic features ...
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Fierro Becker, Fernando Antonio (Universidad de Chile, 2003)En etapas adn tempranas de desarrollo de un cáncer de mama, ocurre frecuentemente la migraci6n de celulas tumorales hacia la medula osea, evento que se ha denominado micro metástasis. Estas células se alojan y persisten ...
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Bauer, Michael; Dietrich, Christof; Nowak, Katharina; Sierralta, Walter; Papenbrock, Jutta (AMER SOC PLANT BIOLOGISTS, 2004-06)Sulfurtransferases (Str) comprise a group of enzymes widely distributed in archaea, eubacteria, and eukaryota which catalyze the transfer of a sulfur atom from suitable sulfur donors to nucleophilic sulfur acceptors. In ...
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Soto Moyano, Rubén; Burgos, Héctor; Flores, Francisco; Valladares Boasi, Luis; Sierralta, Walter; Fernández Hidalgo, Víctor; Pérez, Hernán; Hernández, Paula; Hernández, Alejandro (PERGAMON-ELSEVIER SCIENCE LTD, 2006-10)Melatonin has been shown to inhibit long-term potentiation (LTP) in hippocampal slices of rats. Since LTP may be one of the main mechanisms by which memory traces are encoded and stored in the central nervous system, it ...
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Rivera Gomez-Barris, Francisco Javier (Universidad de Chile, 2006)
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Soto Moyano, Rubén; Valladares Boasi, Luis; Sierralta, Walter; Pérez, Hernán; Mondaca, Mauricio; Fernández, Víctor; Burgos, Héctor; Hernández Hidalgo, Alejandro (BLACKWELL PUBLISHING LTD, 2005-06)Mild reduction in the protein content of the mother's diet from 25 to 8% casein, calorically compensated by carbohydrates, does not alter body and brain weights of rat pups at birth, but leads to significant enhancements ...
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Sierralta, Walter; Hernández, Alejandro; Valladares Boasi, Luis; Pérez, Hernán; Mondaca, Mauricio; Soto Moyano, Rubén (PERGAMON-ELSEVIER SCIENCE LTD, 2006-05-15)Mild reduction in the protein content in the diet of pregnant rats from 25 to 8% casein, calorically compensated by carbohydrates, does not alter body and brain weights of rat pups at birth, but results in significant ...
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Kohen Skop, Paulina; Castro, Olga; Palomino, Alberto; Muñoz, Alex; Christenson, Lane K.; Sierralta, Walter; Carvallo, Pilar; Strauss, Jerome F.; Devoto, Luigi (2003)This study was designed 1) to assess corpus luteum (CL) steroidogenesis in response to exogenous human chorionic gonadotropin (hCG) at different times during the luteal phase, 2) to examine the effect of hCG on steroidogenic ...
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Sierralta, Walter; Kohen Skop, Paulina; Castro, Olga; Muñoz Gallardo, Alex; Strauss III, Jerom F.; Devoto, Luigi (ELSEVIER IRELAND LTD, 2005-10-20)The distribution of the steroidogenic acute regulatory protein (StAR) inside thecal and granulosa-lutein cells of human corpus luteum 9 (CL) was assessed by immunoelectron microscopy. We found greater levels of StAR ...
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Maza Cave, María Pía de la; Olivares, Daniela; Hirsch Birn, Sandra; Sierralta, Walter; Gattas, Vivien; Barrera Acevedo, María; Bunout Barnett, Daniel; Leiva Balich, Laura; Fernández, Mireya (CHURCHILL LIVINGSTONE, 2006-12)Background and aims: Weight maintenance within normal standards is recommended for prevention of conditions associated with oxidative injury. To compare oxidative damage in a post mitotic tissue, between adults differing ...
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Mondaca, Mauricio; Hernández, Alejandro; Pérez, Hernán; López Valladares, Luis; Sierralta, Walter; Fernández, Victor; Soto Moyano, Rubén (Elsevier B.V., 2004)Pretreatment with the α2-adrenoceptor agonist clonidine (31.25, 62.5, or 125 μg/kg, i.p.) dose-dependently reduced long-term potentiation (LTP) elicited in vivo in the occipital cortex of anesthetized rats, whereas ...