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Genetic damage in coal miners evaluated by buccal micronucleus cytome assay.

Abstract：

:During coal mining activities, large quantities of coal dust, ashes, polycyclic aromatic hydrocarbons and metals are released into the environment. This complex mixture presents one of the most important occupational hazards for health of workers. The aim of the present study was to evaluate the genetic damage together with the presence of inorganic elements, in an exposed workers population to coal mining residues of Guajira-Colombia. Thus, 100 exposed workers and 100 non-exposed control individuals were included in this study. To determine genetic damage we assessed the micronucleus (MN) frequencies and nuclear buds in buccal mucosa samples (BMCyt) assay, which were significantly higher in the exposed group than non-exposed control group. In addition, karyorrhectic and karyolytic cells were also significantly higher in the exposed group (cell death). No significant difference was observed between the exposed groups engaged in different mining activities. No correlation between age, alcohol consumption, time of service and MN assay data were found in this study. However, the content of inorganic elements in blood samples analyzed by a Particle-induced X-ray emission technique (PIXE) showed higher values of silicon (Si) and aluminum (Al) in the exposed group. In this study we discuss the possibility of DNA damage observed in the mine workers cells be a consequence of oxidative damage.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

León-Mejía G,Quintana M,Debastiani R,Dias J,Espitia-Pérez L,Hartmann A,Henriques JA,Da Silva J

doi

10.1016/j.ecoenv.2014.05.023

subject

Has Abstract

pub_date

2014-09-01 00:00:00

pages

133-9

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(14)00232-2

journal_volume

107

pub_type

杂志文章

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