Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Camilo López-Alarcón"'
Autor:
Juan Sebastián Reyes, Eduardo Fuentes-Lemus, Juan David Figueroa, Javier Rojas, Angélica Fierro, Felipe Arenas, Per M. Hägglund, Michael J. Davies, Camilo López-Alarcón
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-19 (2022)
Abstract Escherichia coli glucose-6-phosphate dehydrogenase (G6PDH) and 6-phosphogluconate dehydrogenase (6PGDH) are key enzymes of the pentose phosphate pathway, responsible for the NADPH production in cells. We investigated modification of both enz
Externí odkaz:
https://doaj.org/article/39be9749decb4aa08abe21669ea3ffac
Autor:
Juan David Figueroa, Noreima Barroso-Torres, Marcela Morales, Bárbara Herrera, Mario Aranda, Eva Dorta, Camilo López-Alarcón
Publikováno v:
Foods, Vol 12, Iss 23, p 4360 (2023)
The ORAC (Oxygen Radical Absorbance Capacity) assay is commonly employed for determining the antioxidant capacity of bioactive peptides. To gain insights into the meaning of this index for peptides containing a single Trp, we studied the consumption
Externí odkaz:
https://doaj.org/article/add4c73223ca4c0692cfa1de9291f907
Autor:
Eduardo Fuentes-Lemus, Juan Sebastián Reyes, Luke F. Gamon, Camilo López-Alarcón, Michael J. Davies
Publikováno v:
Redox Biology, Vol 48, Iss , Pp 102202- (2021)
Biological systems are heterogeneous and crowded environments. Such packed milieus are expected to modulate reactions both inside and outside the cell, including protein oxidation. In this work, we explored the effect of macromolecular crowding on th
Externí odkaz:
https://doaj.org/article/d126413da117403fb505baa65ea369bf
Publikováno v:
Molecules, Vol 27, Iss 1, p 15 (2021)
Covalent crosslinks within or between proteins play a key role in determining the structure and function of proteins. Some of these are formed intentionally by either enzymatic or molecular reactions and are critical to normal physiological function.
Externí odkaz:
https://doaj.org/article/c9d343b4658b4f0586a68209d295c61d
Autor:
Juan David Figueroa, Eduardo Fuentes-Lemus, Eva Dorta, Victoria Melin, Javiera Cortés-Ríos, Mario Faúndez, David Contreras, Ana Denicola, Beatriz Álvarez, Michael J. Davies, Camilo López-Alarcón
Publikováno v:
Redox Biology, Vol 24, Iss , Pp - (2019)
Carbonate radicals (CO3·-) are generated by the bicarbonate-dependent peroxidase activity of cytosolic superoxide dismutase (Cu,Zn-SOD, SOD-1). The present work explored the use of bleaching of pyrogallol red (PGR) dye to quantify the rate of CO3·-
Externí odkaz:
https://doaj.org/article/ab3682b77413415caa7525b2f4074660
Autor:
Estefania Hugo, Jael Reyes, Elisa Montupil, Raquel Bridi, Eduardo Lissi, Ana Denicola, María Angélica Rubio, Camilo López-Alarcón
Publikováno v:
Molecules, Vol 20, Iss 6, Pp 10582-10593 (2015)
In the present work we studied the reaction under gastric conditions of pyrogallol red (PGR), a polyphenolic dye, with nitrous acid (HONO). PGR has been used as a model polyphenol due to its strong UV-visible absorption and its high reactivity toward
Externí odkaz:
https://doaj.org/article/8046ae1b02344fd2afa5080e87dd061b
Autor:
Klas I. Udekwu, Elizabeth Joubert, Eduardo Lissi, Baback Salehani, Akop Yepremyan, Thomas G. Minehan, Camilo López-Alarcón, Nadja Karamehmedovic, Daisy Hjelmqvist, Madeline J. Simpson, Emilio I. Alarcon
Publikováno v:
Molecules, Vol 18, Iss 9, Pp 11264-11280 (2013)
The anti-peroxyl radical quality of two aqueous rooibos infusions and solutions of their most abundant glycosylated polyphenols was evaluated using pyrogallol red and fluorescein-based oxygen radical absorbance ratios. It was observed that the artifi
Externí odkaz:
https://doaj.org/article/eef696c9651d4f808a788790c7ddc16e
Use of Pyrogallol Red and Pyranine as Probes to Evaluate Antioxidant Capacities towards Hypochlorite
Autor:
Fernanda Pérez-Cruz, Contanza Cortés, Elias Atala, Pamela Bohle, Francisco Valenzuela, Claudio Olea-Azar, Hernán Speisky, Alexis Aspée, Eduardo Lissi, Camilo López-Alarcón, Raquel Bridi
Publikováno v:
Molecules, Vol 18, Iss 2, Pp 1638-1652 (2013)
Hypochlorite is a strong oxidant able to induce deleterious effects in biological systems. The goal of this work was to investigate the use of PGR and PYR as probes in assays aimed at evaluating antioxidant activities towards hypochorite and apply it
Externí odkaz:
https://doaj.org/article/5d434cd4ec014edeb64e28c2f55a117b
Autor:
Camilo López-Alarcón, Eduardo Lissi, Carlos David Pessoa-Mahana, Jaime Mella-Raipán, Benjamin Rojano, Max Romero
Publikováno v:
Molecules, Vol 15, Iss 9, Pp 6152-6167 (2010)
The protective effect of different antioxidants and complex mixtures on the consumption of pyrogallol red (PGR) induced by peroxyl radicals was studied in the absence and presence of Triton X-100 micelles. The presence of micelles decreased significa
Externí odkaz:
https://doaj.org/article/abaed8e1c7a24a0d99c96bc4355785c5
Publikováno v:
Biological Research, Vol 40, Iss 2, Pp 155-162 (2007)
The antioxidant effect of 5-Aminosalicylic acid (5-ASA) on copper-mediated LDL oxidation was followed either by the emitted chemiluminiscence (CL) or by UV-vis spectroscopy. 5-ASA addition extends the lag phase in a concentration-dependent manner wit
Externí odkaz:
https://doaj.org/article/47547e2d9c934a9ca790d61048d7a205