[Not Available].

Objetivo: Estimar el desempeño neuropsicológico y su asociación con la exposición a disolventes orgánicos (DO) en trabajadores petroquímicos en México. Material y méto-dos. Estudio transversal en 203 trabajadores: 102 expuestos a DO y 101 no expuestos.

Increased micronucleus frequencies in reticulocytes of children exposed to industrial pollution: oxidative stress and the OGG1 S326C polymorphism.

We examined possible early-effect biomarkers and polymorphisms of susceptibility in primary school children living near the Atoyac River in central México, which receives waste from multiple industries. We observed a significant increase in micronucleated reticulocytes associated with the oxidative stress index (OSI) and the OGG1 GG (S326C) genotype, and a significant decrease of reticulocytes carrying the transferrin receptor, inversely correlated with OSI.

Oxidative stress index is increased in children exposed to industrial discharges and is inversely correlated with metabolite excretion of voc.

Unlabelled: Although the Atoyac River has been classified as highly polluted by environmental authorities, several communities are settled on its banks, affecting around 1.5 million persons, as well as farmland, due to an environmental distribution of toxics in the area. Our aim was to demonstrate that this environment affects important physiological processes that have an impact in health, so we conducted a study of schoolchildren from small communities on the banks of the river and in another similar town located far from it.

[The evaluation of 1-hydroxypyrene as a bioindicator of industrial exposure to polycyclic aromatic hydrocarbons].

One hundred and twenty-two workers (16 from a coke production plant, 106 from a graphite electrode manufacturing plant) agreed to participate in this study designed to evaluate the relationship between the exposure to polycyclic aromatic hydrocarbons (PAHS) and the urinary excretion of 1-hydroxypyrene (1-HOP), the main metabolite of pyrene. The results show that the concentration of pyrene in air is highly correlated with total PAHS amount (r = 0.083, p < 0.

Evaluation of exposure to polycyclic aromatic hydrocarbons in a coke production and a graphite electrode manufacturing plant: assessment of urinary excretion of 1-hydroxypyrene as a biological indicator of exposure.

Objectives: Characterisation of the airborne concentration of 13 polycyclic aromatic hydrocarbons (PAHs) at various workplaces in a graphite electrode and a coke production plant. Validation of the urinary excretion of 1-hydroxypyrene (hydroxypyrene) as a biological marker of exposure to PAH.

Design: Cross sectional study of workers exposed to PAHs (106 in the graphite electrode producing plant and 16 in the coke works).