Welding fume exposure and associated inflammatory and hyperplastic changes in the lungs of tumor susceptible a/j mice.

It has been suggested that welding fume (WF) exposure increases lung cancer risk in welders. Epidemiology studies have failed to conclude that WF alone causes lung cancer and animal studies are lacking. We examined the course of inflammation, damage, and repair in the lungs of A/J mice, a lung tumor susceptible strain, caused by stainless steel WF.

Effect of stainless steel manual metal arc welding fume on free radical production, DNA damage, and apoptosis induction.

Questions exist concerning the potential carcinogenic effects after welding fume exposure. Welding processes that use stainless steel (SS) materials can produce fumes that may contain metals (e.g.

Behaviour of Listeria monocytogenes during the manufacture and ripening of Manchego and Chihuahua Mexican cheeses.

The ability of Listeria monocytogenes to survive the Mexican Manchego and Chihuahua cheese-making processes and its persistence during the ripening stages of both cheeses was examined. Commercial pasteurized and homogenized whole milk was inoculated with Listeria monocytogenes (strain ATCC 19114) to a level between 2 x 10(6) and 9 x 10(6) CFU/ml. The milk was used to make Mexican Manchego and Chihuahua cheeses in a 25-l vat.

Sodium valproate in the treatment of behavioral disturbance in dementia.

Management of the behavioral complications of dementia, including agitation and aggression, presents a tremendous challenge to families and caregivers of afflicted patients. Most previous pharmacotherapies have shown minimal efficacy and significant side effects. We report our initial, open-label experience using the anticonvulsant sodium valproate in four dementia patients with severe behavioral disturbance.