The organoselenium and organotellurium compounds have been described as promising pharmacological agents in view of their unique biological properties. Glutathione peroxidase mimic, antioxidant activity and thioredoxin reductase inhibition are some of the properties reviewed here. On the other hand, little is known about the molecular toxicological effects of organoselenium and organotellurium ...

Diesel exhaust particles (DEPs) are the main components of ambient particulate materials, including polyaromatic hydrocarbons (PAHs), n-PAHs, heavy metals, and gaseous materials. Many epidemiological, clinical, and toxicological studies have shown that ambient particles, including DEPs, are associated with respiratory disorders, such as asthma, allergic rhinitis, and lung cancer. However, the r...

Printed 1/2/2001 2 Based on an evaluation of the physicochemical and toxicological properties of Methyl tert-Butyl Ether (MTBE), as well as an ex post-facto cost and benefit analysis, it has become clear that there are less expensive and disruptive approaches to achieving the goals of the 1990 Clean Air Act Amendments with regards to gasoline-powered mobile sources. However, before jumping to t...

There may be substantial differences in the chemical composition of technical-grade products of the same active ingredient manufactured under different conditions, from different raw materials, or by different routes of synthesis. Resulting differences in impurity content may significantly affect the toxicological properties of pesticide products. Relevant impurities are those that may exhibit ...