A sandwich enzyme-linked immunosorbent assay for adducts of polycyclic aromatic hydrocarbons with human serum albumin.
A sandwich enzyme-linked immunosorbent assay for adducts of polycyclic aromatic hydrocarbons with human serum albumin.
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DOI:
10.1016/j.ab.2010.01.018
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发表时间:
2010-05-01
影响因子:
2.9
通讯作者:
Rappaport SM
中科院分区:
文献类型:
--
作者:
Chung MK;Riby J;Li H;Iavarone AT;Williams ER;Zheng Y;Rappaport SM
Adducts of benzo[α]pyrene-diolepoxide (BPDE)2 with blood nucleophiles have been used as biomarkers of exposure to polycyclic aromatic hydrocarbons (PAHs). The most popular such assay is a competitive ELISA which employs monoclonal antibody 8E11 to detect benzo[α]pyrene tetrols following hydrolysis of BPDE adducts from lymphocyte DNA or human serum albumin (HSA). Here we use 8E11 as the capture antibody in a sandwich ELISA to detect BPDE-HSA adducts directly in 1 mg samples of HSA or 20 μL of serum/plasma. The assay employs an anti-HSA antibody for detection, which is amplified by an avidin/biotinylated horseradish peroxidase complex. The sandwich ELISA has advantages of specificity and simplicity and is about 10 times more sensitive than the competitive ELISA. To validate the assay, HSA samples were assayed from three populations with known high (coke-oven workers), medium (steel-factory control workers), and low (volunteer subjects) PAH exposures (n = 30). The respective geometric mean levels of BPDE-HSA adducts, i.e., 67.8, 14.7 and 1.93 ng/mg HSA (1,010, 220 and 28.9 fmol BPDE equivalents/mg HSA), were significantly different (p < 0.05). The sandwich ELISA will be useful for screening PAH exposures in large epidemiologic studies and can be extended to other adducts for which capture antibodies are available.
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DOI:
10.1158/1055-9965.epi-08-0697
发表时间:
2009-03
期刊:
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
影响因子:
--
作者:
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DOI:
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1996-04-04
期刊:
MUTATION RESEARCH-ENVIRONMENTAL MUTAGENESIS AND RELATED SUBJECTS
影响因子:
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作者:
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通讯作者:
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DOI:
10.1016/0165-1161(95)90001-2
发表时间:
1995-04-01
期刊:
MUTATION RESEARCH-ENVIRONMENTAL MUTAGENESIS AND RELATED SUBJECTS
影响因子:
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作者:
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通讯作者:
DELEO, VA
DOI:
10.1006/meth.2000.1031
发表时间:
2000-09-01
期刊:
METHODS-A COMPANION TO METHODS IN ENZYMOLOGY
影响因子:
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作者:
Butler, JE
通讯作者:
Butler, JE