The article by Cheung et al, 1 “Antioxidant supplements block the response of HDL to simvastatin-niacin therapy in patients with coronary artery disease and low HDL” in this issue of Arteriosclerosis, Thrombosis, and Vascular Biology, demonstrates a possibly important and troubling observation. The addition of an antioxidant “cocktail,” comprising vitamins E and C, b-carotene, and selenium, for...

Renal transplant recipients (RTRs) have elevated oxidative stress and a high incidence of cardiovascular morbidity and mortality. Although recent studies do not support the use of antioxidant supplements as a cardioprotectant in the general population, evidence suggests that RTRs may represent individuals that would benefit from this therapy. RTRs have elevated oxidative stress probably caused ...

In chronic kidney disease inflammatory processes and stimulation of immune cells result in overproduction of free radicals. In combination with a reduced antioxidant capacity this causes oxidative stress. This review focuses on current pathogenic concepts of oxidative stress for the decline of kidney function and development of cardiovascular complications. We discuss the impact of mitochondria...

Diabetes Mellitus (DM) is associated with a state of increased oxidative stress.1 Paradoxically, however, antioxidants have not been found to provide CVD benefit to DM individuals in several prospective clinical trials.2–11 However, the inability to demonstrate benefit may have been attributable to inadequate patient selection as antioxidants may only benefit those with particularly high levels...

CONTEXT Despite the great breakthroughs we have witnessed in the last 50 years in the prevention, diagnosis, and treatment of hepatitis B, we are still far from eradicating or even curing the disease. Achieving further progress in controlling this disease will not be possible without discovering the exact pathogenesis behind it. One prime suspect in the pathogenesis of various diseases is oxida...

Aluminum phosphide (AlP) is an important fumigant, a commendable and very effective outdoor and indoor insecticide. AlP, locally named “rice tablet”, is widely used to protect rice. As soon as taking a very small amount of an AlP tablet, phosphine vaporizes due to the exposure to the air and affects different kinds of organs. Although, in most cases, clinical history can help making the final d...

Medical nutrition therapy (MNT) guidelines acknowledge the need to identify deficiencies of antioxidant vitamins. However, the guidelines contain that such identification is difficult. Thus, there is evidence that available clinical laboratory tests for antioxidant vitamins C and E are not in perspective in clinical practice. Coenzyme-Q(10) and glutathione tests are also available in research l...

Many conditions associated with male infertility are inducers of oxidative stress, including varicocele. Antioxidants, such as coenzyme Q10, may be useful in this case. To evaluate the antioxidant capacity of seminal plasma of infertile men with varicocele before and after an oral supplementation with coenzyme Q10 , 38 patients were recruited from a pilot clinical trial. A standard semen analys...

Excessive production of reactive oxygen species has been implicated to play an important role in a number of cardiovascular pathologies, including hypertension, atherosclerosis, myocardial infarction, ischemia/reperfusion injury, and restenosis after angioplasty or venous bypass grafting. The formation of reactive oxygen species is balanced out by antioxidant defenses, and augmenting this defen...

Oxidative stress may be involved in many somatic and psychiatric pathological states including dementia. The hypothesis of oxidative stress involvement in dementia is supported by much scientific data through biochemical, genetic and molecular studies. Thus, there are many reports of an increased level of the markers for oxidative damage, alterations in the specific activity of the antioxidant ...