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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX5-102<br />

Compound<br />

Table AX5-6.16. Genotoxic/Carcinogenic Effects <strong>of</strong> <strong>Lead</strong>—Epigenetic Effects and Mixture<br />

Interactions—DNA Repair—Human<br />

Assay (Concentration and<br />

Exposure Time)<br />

Pb acetate DNA strand breaks as nucleoid<br />

sedimentation (500 µM <strong>for</strong><br />

20–25 h)<br />

Abbreviations<br />

Medium and Components<br />

AMEM—Alpha Minimal Essential Medium;<br />

FBS—Fetal Bovine Serum<br />

Cell Type<br />

and Culture<br />

Medium Co-exposure Effects Reference<br />

HeLa Cells in<br />

AMEM + 5%<br />

FBS<br />

UV (5 J/m 2 ) Pb acetate alone did not induce single strand breaks. UV did induce<br />

strand breaks. Co-exposure <strong>of</strong> Pb and UV cause DNA strand breaks to<br />

persist longer suggesting an inhibition <strong>of</strong> repair.<br />

Hartwig et al.<br />

(1990)

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