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Matches in SemOpenAlex for { <https://semopenalex.org/work/W2005241098> ?p ?o ?g. }

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• W2005241098 abstract "The metabolism of the polycyclic aromatic hydrocarbon (PAH) 7,12-dimethylbenz[a]anthracene (DMBA) was studied in murine lymphocytes. This carcinogen has previously been shown to be immunosuppressive to lymphocytes regardless of their ability to be induced via the Ah locus and receptor. Experiments were designed to quantify the generation of metabolites of DMBA by lymphocytes incubated with [14C]DMBA and to ascertain whether radioactivity was covalently bound to cellular macromolecules in DMBA-exposed lymphocytes. No significant metabolism of DMBA was detected in culture supernatants, except when cultures were incubated in the presence of Arochlor-induced rat liver 9000 × g supernatants (S9). Covalent binding of 14C to cellular macromolecules was enhanced approximately eightfold in the presence of S9. Inhibition of monooxygenase activity by α-naphthoflavone did not modulate the immunosuppressive character of DMBA. Furthermore, addition of S9 did not amplify or ablate DMBA-mediated suppression of lymphocyte proliferation to the mitogen concanavalin A (Con A). Selected metabolites of DMBA were evaluated for immunosuppressive effects in cultures stimulated with mitogens and cellular alloantigens. 7-Hydroxymethyl-12-methylbenz[a]anthracene (OHMe) and 5,6-dihydro-5,6-dihydroxybenz[a]anthracene (Diol) were found to cause only slightly greater suppression of lymphocyte responses than DMBA. Thus, it appears that metabolites of DMBA were not responsible for the immunosuppression observed in lymphocyte cultures and that lymphocytes were not equipped to metabolize any significant amount of DMBA. These data lend support to the hypothesis that parent compound alone is responsible for the immunosuppressive effects observed in murine lymphocyte culture." @default.
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• W2005241098 date "1989-01-01" @default.
• W2005241098 modified "2023-09-24" @default.
• W2005241098 title "Functional and biochemical disposition of 7,12-dimethylbenz[a]anthracene in murine lymphoid cells" @default.
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• W2005241098 doi "https://doi.org/10.1016/0009-2797(89)90020-3" @default.
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