Journal
CHEMICAL RESEARCH IN TOXICOLOGY
Volume 24, Issue 2, Pages 162-164Publisher
AMER CHEMICAL SOC
DOI: 10.1021/tx1004166
Keywords
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Funding
- NIH [P30-ES10126, P42-ES05948, T32-07126]
- Formaldehyde Council Inc.
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The presence of endogenous and exogenous N-2-hydroxymethyl-dG adducts in DNA from the nasal mucosa and bone marrow of cynomolgus macaques exposed to 1.9 and 6.1 ppm of [(CD2)-C-13]-formaldehyde for 6 h a day for 2 consecutive days was investigated using a highly sensitive nano-UPLC-MS/MS method with a limit of detection of 20 amol. Both exogenous and endogenous adducts were readily detected and quantified in the nasal tissues of both exposure groups, with an exposure dependent increase in exogenous adducts observed. In contrast, only endogenous adducts were detectable in the bone marrow, even though similar to 10 times more DNA was analyzed.
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