Markers of oxidative damage have been detected in brain tissue from patients with Alzheimer disease (AD) and other neurodegenerative disorders. These findings implicate oxidative injury in the neurodegenerative process, but whether oxidative stress is a cause or a consequence of neurotoxicity remains unclear. We used a Drosophila model of human tauopathies to investigate the role of oxidative s...

Previous studies have demonstrated the physiological changes induced by exercise exposure in hot environments. We investigated the hematological and oxidative changes and tissue damage induced by marathon race in different thermal conditions. Twenty-six male runners completed the São Paulo International Marathon both in hot environment (HE) and in temperate environment (TE). Blood and urine sam...

Objective: The present study was intended to examine whether administration of aqueous extract of the leaves of Ocimum sanctum L. (Tulsi) do possess a protective effect against cadmium-induced oxidative stress in rat heart. Methods: Male albino rats were divided into four groups; control, cadmium treated, aqueous extract protected and only aqueous extract treated (positive control). The rats we...

Apelin, a peptide hormone, is an endogenous ligand for G protein-coupled receptor and has been shown to be widely expressed in human animal tissues, such as the central nervous system adipose tissue. Recent studies indicate that apelin/APJ involved regulation of multiple physiological pathological processes, it associated with cardiovascular diseases, metabolic disorders, neurological ischemia-...

Background: Recent advances showed that oxygen radicals and hydrogen peroxides are linked with the development of several pathological processes associated with chemotherapy, including adverse effects of anti-tumor drugs. Methotrexate (MTX) is an antifolate that is widely used in the treatment of rheumatic disorders and malignant tumors. The efficacy of methotrexate is often limited by severe s...

Oxidative stress is defined as an imbalance between the generation and elimination of reactive oxygen species (ROS) [1]. Low or moderate amounts of ROS have beneficial effects on several physiological processes including wound healing, killing of invading pathogens and tissue repair processes [2]. However, excessive production of ROS can lead to damage of deoxyribonucleic acid (DNA), lipids and...

PURPOSE Clinical studies have reported a correlation between pelvic ischemia and voiding dysfunction in elderly men. The aim of this study was to identify and compare prostate structural modifications in cultured cells and in a rabbit model after exposure to hypoxia, oxidative stress, and chronic ischemia. MATERIALS AND METHODS Cultured human prostate smooth muscle cells (SMCs), epithelial ce...

Oxidative stress leads to increased risk for osteoarthritis (OA) but the precise mechanism remains unclear. We undertook this study to clarify the impact of oxidative stress on the progression of OA from the viewpoint of oxygen free radical induced genomic instability, including telomere instability and resulting replicative senescence and dysfunction in human chondrocytes. Human chondrocytes a...