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- W1982750570 abstract "The formation and persistence of benzo[a]pyrene (B[a]P)-DNA adducts were investigated in blood, liver and two hematopoietic tissues (anterior kidney and spleen) of the mummichog (Fundulus heteroclitus). Fish were injected with a single, sublethal dose of B[a]P (12 mg/kg body weight) and sampled from 8 to 96 days post-injection. 32P-Postlabeling analysis and storage phosphor imaging were used to resolve and quantify hydrophobic DNA adducts. One major DNA adduct was present in each of the examined tissues at all sampling times. This adduct had similar chromatographic characteristics to those of the adduct standard, 7R,8S,9S-trihydroxy-10S-(N(2)-deoxyguanosyl-3'-phosphate)-7,8,9,10-tetrahydro-benzo[a]pyrene (B[a]PDE-dG). Minor DNA adduct spots, representing less than 2% of the total DNA adducts, were observed in some liver, anterior kidney and spleen samples for up to 32 days post-injection. The B[a]P-DNA adducts reached maximal levels at 32 days post-injection and persisted for at least 96 days in all examined tissues. B[a]P-DNA adduct levels were significantly higher in the liver and anterior kidney than in the spleen from 16 to 96 days (P<0.001), although liver and anterior kidney DNA adduct levels were not significantly different at any time. This is the first controlled study to demonstrate the formation and persistence of B[a]P-DNA adducts in hematopoietic tissues and blood of fishes exposed to the prototypical polycyclic aromatic hydrocarbon, B[a]P. Although persistent DNA adducts are generally recognized as potential initiators of carcinogenic processes, adducts in these vital tissues may also lead to disruption of physiological functions such defense mechanisms and hematopoiesis." @default.
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- W1982750570 date "2001-05-01" @default.
- W1982750570 modified "2023-10-18" @default.
- W1982750570 title "Persistence of benzo[a]pyrene–DNA adducts in hematopoietic tissues and blood of the mummichog, Fundulus heteroclitus" @default.
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- W1982750570 doi "https://doi.org/10.1016/s0166-445x(00)00125-9" @default.
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