Answers. Relevance. Rating Newest Oldest. Best Answer: a Spanish term that was formerly used in the Spanish Empire to designate people of mixed European (Spaniard) and Amerindian ancestry living in the region of Latin America.[1] The word originated from the Romance language / Latin word Mixticius, meaning mixed.
The major mechanism of lead toxicity is due to increased generation of reactive oxygen species (ROS) and interference with generation of antioxidants. Lead causes the generation of ROS like hydroperoxide, hydrogen peroxide, and singlet oxygen. ROS are stabilized by glutathione in the body.
1 The most common cause of heavy metal poisoning is lead. 2  The incidence of lead poisoning has been falling steadily in affluent countries, due to removal of lead from paint, petrol and food cans. 3  Lead poisoning remains a problem, however, in older housing where lead water pipes and lead paint may still be present.