Browsing by Author "Bollo Dragnic, Soledad"
Now showing items 21-35 of 35
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Squella Serrano, Juan; Jimenez,; Bollo Dragnic, Soledad; Núñez Vergara, Luis (Elsevier Ltd, 1997)Electrochemical studies on 4-(nitrophenyl) substituted 1,4-dihydropyridines of pharmacological importance have allowed us to generate the one-electron reduction product, the nitro radical anion, ArNȮ- 2 , in aprotic media. ...
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Cañete Rosales, Paulina; Álvarez Lueje, Alejandro; Bollo Dragnic, Soledad (2014)In this paper, for the first time, an electro-analytical method based on the direct adsorption of double-stranded deoxyribonucleic acid (dsDNA) at glassy carbon electrode modified with ethylendiamine (eda)functionalized ...
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Núñez Vergara, Luis; Bollo Dragnic, Soledad; Atria Salas, Ana María; Carbajo, J.; Gunckel, S.; Squella Serrano, Juan (ELECTROCHEMICAL SOC INC, 2002-10)A comprehensive study of the electrochemical characteristics of 2-, 3-, and 4-nitroanisole isomers in three different electrolytic media has been carried out. Furthermore, kinetic characterization of the one-electron ...
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Arias, Paulina; Ferreyra, Nancy F.; Rivas, Gustavo A.; Bollo Dragnic, Soledad (Elsevier, 2009)In this work we report the optimization of a chitosan (CHI) and carbon nanotubes (CNT) modified electrode, CNT-CHI, to study the dsDNA interaction with methylene blue (MB), a well-known DNA intercalator. The analytical ...
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Báez, Daniela F.; Tapia, Felipe; Sierra Rosales, Paulina; Bollo Dragnic, Soledad (Wiley-VCH Verlag, 2019)A novel and useful method to catalyze the electro-oxidation of nicotinamide adenine dinucleotide (NADH) over a glassy carbon electrode (GCE) modified with graphene oxide (GO) is presented. Based on the presence of oxygen ...
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Núñez Vergara, Luis; Squella Serrano, Juan; Bollo Dragnic, Soledad; Marín Catalán, Rigoberto; Pino, L.; Díaz Araya, Guillermo; Letelier Muñoz, María Eugenia (PERGAMON-ELSEVIER SCIENCE LTD, 1998-01)1. Isradipine and lacidipine, two new drugs that are members of the nitro-aryl-1,4-dihydropyridine family, produced inhibition of both growth cultures and oxygen consumption on epimastigotes of Trypanosoma cruzi Tulahuen ...
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Primo, Emiliano N.; Kogan Bocian, Marcelo; Verdejo, Hugo E.; Bollo Dragnic, Soledad; Rubianes, María D.; Rivas, Gustavo A. (American Chemical Society, 2018)© 2018 American Chemical Society. We report the first optical biosensor for the novel and important cardiac biomarker, galectin-3 (Gal3), using the anti-Gal3 antibody as a biorecognition element and surface plasmon resonance ...
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Núñez Vergara, Luis; Squella Serrano, Juan; Bollo Dragnic, Soledad; Morello Casté, Antonio; Repetto Scaramelli, Yolanda; Aldunate, Jorge; Letelier, María E. (1997)A series of nitro aryl 1,4-dihydropyridine derivatives produced inhibition of both cell growth and oxygen consumption on Tulahuen and LQ strains, and clone Dm 28c of epimastigotes of Trypanosoma cruzi. Nicardipine was found ...
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Núñez Vergara, Luis; Aldunate, Jorge; Letelier Muñoz, María Eugenia; Bollo Dragnic, Soledad; Repetto Scaramelli, Yolanda; Morello Casté, Antonio; Spencer, P. L.; Squella Serrano, Juan (Elsevier, 1995)The cyclic voltammetric (CV) behaviour of nifurtimox was studied. The addition of aprotic solvent (DMF) to nifurtimox in an aqueous citrate buffer system was examined. Qualitatively this results in separation of the initial ...
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Núñez Vergara, Luis; Navarrete-Encina, P. A.; Ortiz, M. E.; Bollo Dragnic, Soledad; Squella Serrano, Juan (Elsevier Ireland Ltd, 1996)The reactivity of the electrochemically generated nitro radical anion from nifedipine, a nitro aryl 1,4-dihydropyridine derivative, with relevant endobiotics and thiol-containing xenobiotics, was quantitatively assessed ...
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Núñez Vergara, Luis; Guinez-Castro, Luis; Bollo Dragnic, Soledad; Squella Serrano, Juan (1996)The reactivity of the electrochemically generated nitro radical anion from nicardipine, nitrendipine and nimodipine, all nitro aryl 1,4-dihydropyridine derivative, with relevant thiols, was quantitatively assessed by cyclic ...
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Núñez Vergara, Luis; Díaz Araya, Guillermo; Olea Azar, Claudio; Atria Salas, Ana María; Bollo Dragnic, Soledad; Squella Serrano, Juan (1998)Purpose. To determine the formation of the one-electron reduction product from nisoldipine and its reactivity with relevant thiols in mixed medium. Methods. Cyclic voltammetry (CV) and electron paramagnetic resonance (EPR) ...
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Ferreyra, Nancy; Bollo Dragnic, Soledad; Rivas, Gustavo (Elsevier, 2010)The present manuscript describes studies of the electron transfer kinetics at gold electrodes modified by electrostatic self-assemblies of polyethylenimine (PEI), DNA and gold nanoparticles (NP) by Scanning Electrochemical ...
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Bollo Dragnic, Soledad; Jara Ulloa, Paola Andrea; Zapata Torres, Gerald; Cutiño,; Sturm,; Núñez Vergara, Luis; Squella Serrano, Juan (Elsevier Ltd, 2010)The voltammetric reduction of 1-methyl- and 1-H- 4-nitroimidazole derivatives was studied in different protic and aprotic media to investigate the influence of the N-1 substitution in the mechanism of reduction, the ...
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Pérez-Ortiz, M.; Bollo Dragnic, Soledad; Zapata Urzúa, Claudio Andrés; Yáñez, C.; Álvarez Lueje, Alejandro (2011)For the first time, a simple differential pulse voltammetry methodology for direct determination of benserazide in presence of levodopa in tablets was developed without any redox mediator, modified electrodes, or the ...