Browsing by Title Artículos de revistas

Now showing items 2010-2029 of 2801

    • Proinflammatory cytokines differentially regulate adipocyte mitochondrial metabolism, oxidative stress, and ... 
      Hahn, Wendy S.; Kuzmicic Previtali, Jovan Paolo; Burrill, Joel S.; Donoghue, Margaret A.; Foncea, Rocío; Jensen, Michael D.; Lavandero González, Sergio; Arriaga, Edgar A.; Bernlohr, David A. (American Physiological Society, 2014)
      Proinflammatory cytokines differentially regulate adipocyte mitochondrial metabolism, oxidative stress, and dynamics. Macrophage infiltration of adipose tissue and the chronic low-grade production of inflammatory cytokines ...
    • Proliferation of human mammary cancer cells exposed to 27-hydroxycholesterol 
      Cruz, Pamela; Torres, Cristian; Ramírez, María Eugenia; Epuñán, María José; Valladares Boasi, Luis; Sierralta, Walter Daniel (2010)
      The aim of the present study was to identify the possible mechanisms by which certain estradiol receptor (ER)-positive mammary tumor cells remain resistant to treatment with anti-estrogens or inhibitors of local estradiol ...
    • PROPERTIES OF LACCASE ISOENZYMES PRODUCED BY THE BASIDIOMYCETE CERIPORIOPSIS-SUBVERMISPORA 
      Salas, Carlos; Lobos, S.; Larraín, Juan; Salas, Loreto; Cullen, D.; Vicuña E., Rafael (PORTLAND PRESS, 1995-06)
      Laccase is one of the ligninolytic enzymes found in liquid cultures of the fungus Ceriporiopsis subvermispora in defined medium. As an approach to a clarification of the role of laccases during the attack on lignin by the ...
    • Properties of two apyrases from Solanum tuberosum 
      Kettlun, Ana M.; Uribe, Luz; Calvo, Luz; Silva, Luz; Rivera, Luz; Mancilla, Marta; Antonieta, Marta; Valenzuela, Marta; Traverso Cori, A. (1982)
      Two homogeneous isoenzymes of apyrase from Pimpernel and Desirée varieties of Solanum tuberosum were obtained by affinity chromatography on agarose-Cibacron Blue or agarose-ATP-phosphonate columns. Both enzymes split POP ...
    • Proposal for diagnostic criteria of tropical spastic paraparesis/HTLV-I- associated myelopathy (TSP/HAM) 
      De Castro-Costa, Carlos M.; Araújo, Abelardo Q.C.; Barreto, Márcio M.; Takayanagui, Osvaldo M.; Sohler, Marzia P.; Da Silva, Eduardo L.M.; De Paula, Sônia M.B.; Ishak, Ricardo; Ribas, João G.R.; Rovirosa, Luis C.; Carton, Herwig; Gotuzzo, Eduardo; Hall, William W.; Mo (2006)
      After the first description of TSP/HAM in 1985 and the elaboration of WHO's diagnostic criteria in 1988, the experience of the professionals in this field has increased so that a critical reappraisal of these diagnostic ...
    • Protection of astaxanthin from photodegradation by its inclusion in hierarchically assembled nano and ... 
      Alarcón-Alarcón, Carlos; Inostroza-Riquelme, Mariela; Torres Gallegos, César; Araya, Claudio; Miranda, Miguel; Sánchez-Caamaño, Juan; Moreno Villoslada, Ignacio; Oyarzún Ampuero, Felipe (Elsevier, 2018-10)
      Astaxanthin is a light sensitive molecule which is already approved as a dietary supplement, with a wide range of biological properties in humans and fishes. In this paper, we provide strategies to photostabilize the pigment ...
    • Protective effect of boldo and tea infusions on the visible light-mediated pro-oxidant effects of vitamin ... 
      Silva, E.; Jopia, M.; Edwards, A.; Lemp Miranda, Else; Fuente, Julio de la; Lissi Gervaso, Eduardo (2002)
      The effect of Boldo and black tea infusions on the pro-oxidant effects of vitamin B-2, riboflavin (R-F), when exposed to the action of visible light was studied. The amounts of antioxidants present in Boldo and tea infusions ...
    • Protective effect of red algae (Rhodophyta) extracts on essential dietary components of heat-treated salmon 
      Ortiz Viedma, Jaime Alejandro; Aguilera, José M.; Flores, Marcos; Lemus Mondaca, Roberto Alejandro; Larrazabal Fuentes, María José; Miranda, José M.; Aubourg Martin, Santiago Pedro (MDPI, 2021)
      Salmon paste contains nutritious components such as essential fatty acids (EPA, DHA), vitamin E and astaxanthin, which can be protected with the addition of red algae extracts. Phenolic extracts were prepared with an ...
    • Protective effects of a standard extract of Mangifera indica L. (VIMANG (R)) against mouse ear edemas and ... 
      Garrido, Gabino; González, D.; Lemus, Yeny; Delporte Vergara, Carla; Delgado, René (ELSEVIER, 2006-06)
      A standard aqueous extract of Mangifera indica L., used in Cuba as antioxidant under the brand name VIMAN (R), was tested in vivo for its anti-inflammatory activity, using commonly accepted assays. The standard extract of ...
    • Protective effects of a standard extract of Mangifera indica L. (VIMANG®) against mouse ear edemas and its ... 
      Garrido, G.; González, D.; Lemus, Y.; Delporte, C.; Delgado, R. (2006)
      A standard aqueous extract of Mangifera indica L., used in Cuba as antioxidant under the brand name VIMANG®, was tested in vivo for its anti-inflammatory activity, using commonly accepted assays. The standard extract of ...
    • Protein-coated nanoparticles embedded in films as delivery platforms 
      Morales, Javier O.; Ross, Alistair C.; McConville, Jason T. (Royal Pharmaceutical Society, 2013)
      Objectives This work aimed to evaluate the performance of nanoparticle-loaded films based on matrices of polymethacrylates and hydroxypropylmethylcellulose (HPMC) intended for delivery of macromolecules. Methods Lysozyme ...
    • Proteogenomic analysis in an early onset diffuse gastric cancer patient revealed alterations in PIK3R1, ... 
      Córdova Delgado, Miguel Angel; Pinto, Mauricio P.; Pizarro, Gonzalo; Koch, Elard; Vargas, Cristian; Hernández, Mauricio; Nourdin, Guillermo; Saldivia, Pablo; Rodríguez Z., María Paz; Berkovits, Alejandro; Manque, Patricio; Rios, Juvenal A.; Garcia-Bloj, Benjamín; Garrido, Marcelo (AME Publishing Company, 2022)
      Background: Early-onset gastric cancers (EOGC) are poor prognosis hard-to treat malignancies that affect young individuals (<45 years old). Case Description: Herein we describe the case of a 26-year-old female EOGC patient ...
    • Proteomics in alcohol research 
      Anni, Helen; Israel Jacard, Yedy (National Institute on Alcohol Abuse and Alcoholism (NIAAA), 2002)
      The proteome is the complete set of proteins in an organism. It is considerably larger and more complex than the genome - the collection of genes that encodes these proteins. Proteomics deals with the qualitative and ...
    • A protocol for evaluating the safety of herbal preparations in a rat model: the case of a supercritical ... 
      Letelier Muñoz, María Eugenia; Aracena Parks, Paula; Peredo Silva, Liliana (2010)
      Herbal extracts must be evaluated for their efficacy and safety. In vivo acute toxicity studies must consider the different mechanisms by which active compounds may elicit toxicological outcomes. Thus, a methodology to ...
    • Protonation Sites, Tandem Mass Spectrometry and Computational Calculations of o-Carbonyl Carbazolequinone ... 
      Martínez Cifuentes, Maximiliano; Clavijo Allancan, Graciela; Zúñiga Hormazábal, Pamela; Aranda Zapata, Braulio Sebastián; Barriga, Andrés; Weiss López, Boris; Araya Maturana, Ramiro (MDPI AG, 2016)
      A series of a new type of tetracyclic carbazolequinones incorporating a carbonyl group at the ortho position relative to the quinone moiety was synthesized and analyzed by tandem electrospray ionization mass spectrometry ...
    • Psychoactive drugs in the Brazilian public health system: use profile and associated factors 
      Siani-Morello, Manuela Roque; Borges Pereira, Lucas; de Lima Ferreira, Iahel Manon; Jirón Aliste, Marcela Carolina; Leira Pereira, Leonardo Régis (Univ Sao Paulo, Conjunto Quimicas, Servico Publicacoes e Circulacao, Brazil, 2022)
      The purpose of this study is to estimate the prevalence of and characterize the use of psychoactive drugs among drug users in a Brazilian municipality, relating the findings to factors associated with the consumption of ...
    • Psychosocial factors and sociodemographic characteristics associated with suicidality risk in chilean adolescents 
      Zulic Agramunt, Christianne Milena; Guzmán Guzmán, Iris Paola; Delgado Floody, Pedro Antonio; Cerda Saavedra, Monserrat Belén; Gutiérrez de la Fuente, Patricio; Meza Solano, Mario Patricio; Sagredo Berríos, Claudia; Pérez Testor, Carles (MDPI, 2022)
      Background: Suicidality in adolescents is a growing concern and is currently a public health issue in Chile and the world. Objective: To determine the association between the risk of suicidality with self-harm, ...
    • Pulling on super paramagnetic beads with micro cantilevers: single molecule mechanical assay application 
      Muñoz, Romina; Aguilar Sandoval, Felipe; Wilson Moya, Christian; Melo, Francisco (IOP Publishing, 2015)
      This paper demonstrates that it is possible to trap and release a super paramagnetic micro bead by fixing three super paramagnetic micro beads in a triangular array at the sensitive end of a micro cantilever, and by simply ...
    • PURIFICATION AND CHARACTERIZATION OF 2 ISOAPYRASES FROM SOLANUM-TUBEROSUM VAR ULTIMUS 
      Kettlun, Ana María; Urra, Raúl; Leyton, Mario; Valenzuela Pedevila, María Antonieta; Mancilla, Marta; Traverso Cori, A. (PERGAMON-ELSEVIER SCIENCE LTD, 1992-11)
      Two isoenzymes of ATP-diphosphohydrolase (apyrase) were extracted and purified from S. tuberosum var. Ultimus. Their hydrolytic activity ratios (ATPase/ADPase) were 1.0 (apyrase B) and ca 15.0 (apyrase A). They were ...
    • Purification, partial kinetic characterization and reactive sulfhydryl groups of the phosphoenolpyruvate ... 
      Vial, M. Victoria; Oelckers, Karin B.; Rojas, M. Cecilia; Simpfendörfer, Robert W. (1995)
      Phosphoenolpyruvate carboxykinase (PEPCK) from the adductor muscle of Perumytilus purpuratus was purified to homogeneity, as determined by SDS-polyacrylamide gel electrophoresis (PAGE). The purification consisted of a ...