In an attempt to assess whether silica induces lung cancer, a nested case-control study of 316 male lung cancer cases and 1352 controls was carried out among pottery workers and tungsten, copper-iron, and tin miners from five provinces in south central China. Exposure to dust and silica for each study subject was evaluated quantitatively by cumulative exposure measures based on historical indus...

The effects of lead, iron, copper, and zinc ions on 8-aminolevulinic acid dehydratase from red blood cell haemolysates in humans, both in the absence and presence of plasma proteins, have been investigated. 8-aminolevulinic acid dehydratase (ALAD) was not found to be a specific indicator of blood lead concentrations since it was also inhibited by copper and activated by zinc. Plasma protein pro...

OBJECTIVE To determine the effect of exposure to metal dusts, fumes and high temperature levels among brass workers in comparison to a control group. STUDY DESIGN Analytical cross-sectional study. METHODOLOGY One hundred and fifty four brass workers were matched for age with 154 controls selected from the local population. An interviewer-administered questionnaire was used to determine the ...

There appears to be general agreement that cytochrome oxidase preparations obtained by various procedures contain amounts of copper in the range of the heme content of this enzyme (l-9). Various workers disagree, however, on the significance of this finding (6-10). Whereas several investigators hold the view that the copper associated with cytochrome oxidase has properties that would qualify it...

With the development of leaching methods (Ketchum, Ferry, Redfield & Burns, 1945; Harris, 1945) for the study of anti-fouling compositions and the in~reased interest in the toxicity of copper and mercury to marine organisms, it has become desirable to have a moderately rapid method for the estimation of mercury in the presence of copper ions. Frequently, in these solutions, the copper is in lar...

Therapeutic Antioxidants In article number 2208989, Gwang-Bum Im, Young Geon Kim, Tae Yong Yoo, Taeghwan Hyeon, Suk Ho Bhang, and co-workers report the therapeutic effect of copper-deposited ceria nanoparticles (CuCe NPs) on ischemic vascular diseases. They exhibit enhanced antioxidant effects over pristine as released copper buffers depletion glutathione while providing bioavailable a cofactor...