Results: 723

Impacto da ingestão dietética e do estresse oxidativo em pacientes com doença trofoblástica gestacional

Femina; 42 (3), 2014
A doença trofoblástica gestacional (DTG) é um termo aplicado a um grupo de tumores relacionados à gestação, caracterizando formas benignas (mola hidatiforme - MH) e malignas (neoplasia trofoblástica gestacional - NTG). O estresse oxidativo, a ingestão dietética e o estado nutricional da gestante...

Efeito da suplementação com castanha-do-brasil (Bertholletia excelsa H. B. K) como fonte de selênio sobre os marcadores de estresse oxidativo, citocinas inflamatórias e sua relação com o polimorfismo Pro198Leu no gene da glutationa peroxidase 1 em pacientes com artrite reumatoide

A artrite reumatoide (AR) é uma doença inflamatória crônica, caracterizada por inflamação das articulações e se manifesta por inchaço e incapacidade funcional das mesmas. A patologia da doença envolve a produção excessiva de radicais livres pelos neutrófilos ativados, podendo induzir à pero...

Hepatotoxicity and oxidative stress induced byNaja haje crude venom

Background Snake venoms are synthesized and stored in venom glands. Most venoms are complex mixtures of several proteins, peptides, enzymes, toxins and non-protein components. In the present study, we investigated the oxidative stress and apoptosis in rat liver cells provoked by Naja haje crude injection...

Investigação de potenciais biomarcadores redox - um enfoque em aldeídos e seus produtos

As espécies reativas são associadas a processos toxicológicos e fisiopatológicos, agindo como importantes mediadores, por exemplo, na sinalização celular. Diversas classes de compostos têm sido utilizadas como possíveis biomarcadores de estresse redox, destacando-se os aldeídos α,β-insaturados...

Passiflora incarnata treatment during gestation and lactation: toxicological and antioxidant evaluation in wistar dams

Braz. j. pharm. sci; 50 (2), 2014
Passiflora incarnata is marketed in many countries as a phytomedicine. Even though the directions of most marketed phytomedicines recommend them to be used under medical supervision, reproductive and developmental studies are sparse and not mandatory for regulatory purposes. In this study, a reproductive...

Comparison of the antioxidant potential of antiparkinsonian drugs in different in vitro models

Braz. j. pharm. sci; 50 (4), 2014
Parkinson's disease (PD) is characterized by progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta. Furthermore, oxidative stress plays a role in PD, causing or contributing to the neurodegenerative process. Currently PD has only symptomatic treatment and still nothing ca...

Protective effect of bixin on carbon tetrachloride-induced hepatotoxicity in rats

Biol. Res; 47 (), 2014
BACKGROUND: The liver is an important organ for its ability to transform xenobiotics, making the liver tissue a prime target for toxic substances. The carotenoid bixin present in annatto is an antioxidant that can protect cells and tissues against the deleterious effects of free radicals. In this study, ...

Curcumin restores mitochondrial functions and decreases lipid peroxidation in liver and kidneys of diabetic db/db mice

Biol. Res; 47 (), 2014
BACKGROUND: Nitrosative and oxidative stress play a key role in obesity and diabetes-related mitochondrial dysfunction. The objective was to investigate the effect of curcumin treatment on state 3 and 4 oxygen consumption, nitric oxide (NO) synthesis, ATPase activity and lipid oxidation in mitochondria i...

Investigations of anticholinestrase and antioxidant potentials of methanolic extract, subsequent fractions, crude saponins and flavonoids isolated from Isodon rugosus

Biol. Res; 47 (), 2014
BACKGROUND: Based on the ethnomedicinal uses and the effective outcomes of natural products in various diseases, this study was designed to evaluate Isodon rugosus as possible remedy in oxidative stress, alzheimer's and other neurodegenerative diseases. Acetylecholinestrase (AChE) and butyrylcholinestera...