August 2013
Induction of oxidative stress and apoptosis in human neutrophils by p-phenylenediamine
Exposure to paraphenylenediamine (PPD), a derivative of paranitroaniline widely used as an oxidisable hair dye, is often associated with the development of allergic contact dermatitis. Such reactions involve activation of the subject’s immune system and it is known that neutrophils are the first cells to arrive at the site of perturbation. In view of its pivotal role in the initiation and amplification of...
August 2013
A comparative study of copper (ii) removal on iron oxide, aluminum oxide and activated carbon by continuous down flow method
The adsorption capacities of iron oxide, aluminum oxide, and activated carbon sorbents for the removal of copper ions were compared by down flow method. For this purpose, the 20 mg L-1aqueous solution of Cu (II) with initial pH of 6.5 was fed through three different packed columns at bed depth of 10 cm and flow rate of 1.85 ml min-1. The experimental breakthrough curves were drawn from the adsorption data of packed bed...
August 2013
Lead and cadmium in maternal blood and placenta in pregnant women from a mining-smelting zone of Peru and transfer of these metals to their newborns
The present study was carried out to determine the lead and cadmium concentration in maternal and umbilical cord blood and placental tissue and breast milk, evaluating forty deliveries with normal evolution of pregnant women living in a mining-smelting town in Peru. In this study, mean concentration of lead in the blood of both women and their neonates were 27.2 ± 15.9 and 18.5 ± 13.0 µg/dl,...
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