Buscar
Mostrando ítems 2861-2870 de 5781
Structural and Biochemical Characterization of Peroxiredoxin Q beta from Xylella fastidiosa CATALYTIC MECHANISM and HIGH REACTIVITY
(Amer Soc Biochemistry Molecular Biology Inc, 2010-05-21)
The phytopathogenic bacterium Xylella fastidiosa is the etiological agent of various plant diseases. To survive under oxidative stress imposed by the host, microorganisms express antioxidant proteins, including cysteine-based ...
Experimental murine mycobacteriosis: evaluation of the functional activity of alveolar macrophages in thalidomide- treated mice
(Associação Brasileira de Divulgação Científica (ABRADIC), 2004-04-01)
Thalidomide is a selective inhibitor of tumor necrosis factor-alpha (TNF-alpha), a cytokine involved in mycobacterial death mechanisms. We investigated the role of this drug in the functional activity of alveolar macrophages ...
Investigation of the interaction between Tc85-11 protein and antibody anti-T cruzi by AFM and amperometric measurements
(Elsevier B.V., 2006-07-15)
This present work reports on development of an amperometric immunosensor for the diagnosis of Chagas' disease using a specific glycoprotein of the trypomastigote surface, which belongs to the Tc85-11 protein family of ...
Anti-Helicobacter pylori activity and immunostimulatory effect of extracts from Byrsonima crassa Nied. (Malpighiaceae)
(Biomed Central Ltd., 2009-01-16)
Background: Several in vitro studies have looked at the effect of medicinal plant extracts against Helicobacter pylori (H. pylori). Regardless of the popular use of Byrsonima crassa (B. crassa) as antiemetic, diuretic, ...
Optimized synthesis of the melatonin metabolite N(1)-acetyl-N(2)-formyl-5-methoxykynuramine (AFMK)
(Wiley-Blackwell, 2008-10-01)
N(1)-acetyl-N(2)-formyl-5-methoxykynuramine (AFMK) is the product of oxidative pyrrole ring cleavage of melatonin. AFMK and its deformylated derivative N(1)-acetyl-5-methoxykynuramine (AMK) are compounds for which there ...
Stability study of azithromycin in ophthalmic preparations
(Universidade de São Paulo (USP), Conjunto Quimicas, 2009-04-01)
A stability Study of azithromycin in ophthalmic preparations was developed by Submission to different types of light, temperature and pH, using the biodiffusion assay (cylinder 3 x 3) for the quantifications. Bacillus ...
Increased Reactive Oxygen Species and Tumor Necrosis Factor-Alpha Production by Monocytes are Associated with Elevated Levels of Uric Acid in Pre-Eclamptic Women
(Wiley-Blackwell, 2011-12-01)
ProblemTo evaluate associations between hyperuricemia and increases in production of reactive oxygen species (ROS) and tumor necrosis factor alpha (TNF-alpha) in pre-eclamptic pregnancies.Method of studyThis study investigated ...
Lack of effect of prior treatment with fluoride on genotoxicity of two chemical agents in vitro
(Karger, 2007-01-01)
The goal of this study was to investigate the ability of fluoride to modulate the genotoxic effects induced by the oxidative agent hydrogen peroxide (H2O2) and the alkylating agent methyl methanesulfonate (MMS) in vitro ...
Genotoxicity in primary human peripheral lymphocytes after exposure to radiopacifiers in vitro
(Springer, 2008-02-01)
Taking into consideration that DNA damage plays an important role in carcinogenesis, the purpose of this study was to evaluate whether some radiopacifiers widely used in clinical practice are able to induce genetic damage ...
In Vitro Assessment of Chemical Activation Efficiency During In-office Dental Bleaching
(Operative Dentistry Inc, 2010-05-01)
Purpose: This study compared five types of chemical catalyzing agents added to 35% hydrogen peroxide gel, with regard to their capacity of intensifying in-office dental bleaching results.Methods: One-hundred and twenty ...