Introduction: Recent evidence shows that oxidative stress seems to be related with the pathophysiology of X-linked adrenoleukodystrophy (X-ALD), a neurodegenerative disorder. Methods: In the present study, the in vitro effect of N-acetyl-L-cysteine (NAC) on glutathione (GSH) and sulfhydryl levels in X-AL...
BACKGROUND: Ferredoxin NADP(H) oxidoreductases (EC 1.18.1.2) (FNR) are flavoenzymes present in photosynthetic organisms; they are relevant for the production of reduced donors to redox reactions, i.e. in photosynthesis, the reduction of NADP+ to NADPH using the electrons provided by Ferredoxin (Fd), a sm...
Abstract Phenolic compounds are a group of plant secondary metabolites known to have a variety of bioactivities, including the ability to function as antioxidants. Because of the side effects of the use of synthetic substances, the search for natural and less toxic compounds has increased significantly. ...
Abstract Copper mine drainages are restricted environments that have been overlooked as sources of new biocatalysts for bioremediation and organic syntheses. Therefore, this study aimed to determine the enzymatic activities (esterase, epoxide hydrolase and monooxygenase) of 56 heterotrophic bacteria isol...
Bacterias/clasificación,
Bacterias/enzimología,
Cobre,
Microbiología Ambiental,
Minería,
Bacterias/genética,
Bacterias/aislamiento & purificación,
Enzimas,
Esterasas/genética,
Esterasas/metabolismo,
Oxigenasas de Función Mixta/genética,
Oxigenasas de Función Mixta/metabolismo,
Oxidación-Reducción,
Filogenia,
ARN Ribosómico 16S/genética,
Análisis de Secuencia de ADN,
Sulfuros/metabolismo
This work demonstrates that the addition of metronidazole together with a ubiquitous quinone compound reduces adherence of Lactobacillus acidophilus to ovine vaginal cells. Spectrophotometric and voltammetric studies have shown that neoformed compounds were observed in these systems; there were also chan...
ABSTRACT Streptomyces lunalinharesii strain 235 produces an antimicrobial substance that is active against sulfate reducing bacteria, the major bacterial group responsible for biofilm formation and biocorrosion in petroleum reservoirs. The use of this antimicrobial substance for sulfate reducing bacteria...
Antibiosis,
Biopelículas,
Oxidación-Reducción,
Streptomyces/fisiología,
Sulfatos/metabolismo,
Antibacterianos/farmacología,
Biopelículas/efectos de los fármacos,
Biopelículas/crecimiento & desarrollo,
Pruebas de Sensibilidad Microbiana,
Streptomyces/efectos de los fármacos,
Streptomyces/ultraestructura
Abstract The antioxidant and anticandidal activities of leaves obtained from Camellia sinensis by non-fermentation (green and white teas), semi-fermentation (red tea) and fermentation method (black tea) were investigated. It was evaluated the total phenolic content by Folin-Ciocalteau assay; antioxidant ...
Antifúngicos/análisis,
Antifúngicos/farmacología,
Antioxidantes/análisis,
Antioxidantes/farmacología,
Camellia sinensis/química,
Fermentación,
Hemólisis,
Peroxidación de Lípido,
Oxidación-Reducción,
Peroxidasa/metabolismo,
Fenoles/análisis,
Extractos Vegetales,
Hojas de la Planta/química,
Té/química
Abstract Algae can tolerate a broad range of growing conditions but extreme conditions may lead to the generation of highly dangerous reactive oxygen species (ROS), which may cause the deterioration of cell metabolism and damage cellular components. The antioxidants produced by algae alleviate the harmfu...
Antioxidantes/metabolismo,
Spirulina/metabolismo,
Antioxidantes/química,
Clorofila/metabolismo,
Concentración de Iones de Hidrógeno,
Oxidación-Reducción,
Fenoles/química,
Fenoles/metabolismo,
Ficobiliproteínas/química,
Ficobiliproteínas/metabolismo,
Spirulina/química,
Spirulina/crecimiento & desarrollo
El clorpirifos (CPF) es un insecticida de amplio espectro que se utiliza en Argentina y en otros países de Latinoamérica. Se emplea para el control de plagas en la producción de frutas, hortalizas, cereales y plantas ornamentales. El principal mecanismo de acción descripto para este insecticida es la...
In this microcosm study, we analyzed the effect produced by hydroquinone on the expression of soil biological denitrification, in relation to the redox state of the soil, both in terms of intensity factor (Eh′) and capacity factor (amount of oxidized or reduced compounds). The supplementation of an...
