This study examined the effects of antioxidant vitamins on several aspects of sepsis-related myocardial signaling cascades. Sprague-Dawley rats were divided into four groups: group 1, vehicle-treated shams; group 2, sham-operated rats given antioxidant vitamins (vitamin C, 24 mg/kg; vitamin E, 20 U/kg; vitamin A, 417 U/kg; and zinc, 3.7 ng/kg) by oral gavage in 0.5 ml water twice daily for 3 da...

Oxidative stress derived from activated neutrophils is considered important in the development of multi-organ dysfunction syndrome during sepsis. However, so far, trials investigating the putative beneficial effects of antioxidant therapy have yielded conflicting results and have been subject to debate because of heterogenous patient populations and differences in the dosage and types of antiox...

INTRODUCTION Idiopathic oligoasthenoteratozoospermia (iOAT) is commonly encountered during the evaluation of men with infertility. Antioxidants have been utilized empirically in the treatment of iOAT based on their ability to reverse oxidative stress (OS)-induced sperm dysfunction often encountered in this patient population. METHODS A literature search was performed using MEDLINE/PubMed, foc...

Free radical or oxidative injury may be a fundamental mechanism underlying a number of human neurologic diseases. Therapy using free radical scavengers (antioxidants) has the potential to prevent, delay, or ameliorate many neurologic disorders. However, the biochemistry of oxidative pathobiology is complex, and optimum antioxidant therapeutic options may vary and need to be tailored to individu...

During the past decade, the perception flourished that lipid and antioxidant therapy were 2 independent avenues for cardiovascular protection. However, studies have shown that commonly used antioxidant vitamin regimens do not prevent cardiovascular events. We found that the addition of antioxidant vitamins to simvastatin-niacin therapy substantially blunts the expected rise in the protective hi...

Increasing evidence suggests that oxidative stress contributes to the pathogenesis of many neurodegenerative disorders, including retinitis pigmentosa (RP), age related macular degeneration (AMD), glaucoma, diabetic retinopathy, and light damage. RP refers to a group of diseases in which a mutation results in death of rod photoreceptors followed by gradual death of cones. In this review we focu...

Nonalcoholic steatohepatitis (NASH) affects up to 3% of the North American population. It occurs as a manifestation of the insulin-resistant state and oxidative stress is thought to be a key component of its pathophysiology. Exercise and diet, which are the mainstay of therapy, are difficult to achieve and maintain with a disappointing long-term compliance record. There is growing literature on...

Termos novos, tais como stress oxidativo, produtos anti-oxidantes ou risco pro-oxidante, estão se tornando mais comuns, e o aumento no número de conferências científicas internacionais e a publicação de milhares de artigos científicos é uma indicação do crescente interesse no assunto. O exemplo mais conhecido é o Paradoxo Francês, baseado na aparente compatibilidade de uma dieta rica em gordura...