Hepatic glucuronidation of 4-tert-octylphenol in humans: inter-individual variability and responsible UDP-glucuronosyltransferase isoforms
Hepatic glucuronidation of 4-tert-octylphenol in humans: inter-individual variability and responsible UDP-glucuronosyltransferase isoforms
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人类 4-叔辛基苯酚的肝脏葡萄糖醛酸化:个体间变异和负责的 UDP-葡萄糖醛酸基转移酶亚型
DOI:
10.1007/s00204-017-1982-1
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发表时间:
2017
影响因子:
6.1
通讯作者:
Hanioka N.
中科院分区:
文献类型:
--
作者:
Isobe T.;Ohkawara S.;Tanaka-Kagawa T.;Jinno H.;Hanioka N.
4-tert-Octylphenol (4-tOP) is an endocrine-disrupting chemical. It is mainly metabolized into glucuronide by UDP-glucuronosyltransferase (UGT) enzymes in humans. The purpose of this study was to assess inter-individual variability in and the possible roles of UGT isoforms in hepatic 4-tOP glucuronidation in the humans. 4-tOP glucuronidation activities in the liver microsomes and recombinant UGTs of humans were assessed at broad substrate concentrations, and kinetics were analyzed. Correlation analyses between 4-tOP and diclofenac or 4-hydroxybiphenyl activities in pooled and individual human liver microsomes were also performed. Typical CLintvalues were 17.8 mL/min/mg protein for the low type, 25.2 mL/min/mg protein for the medium type, and 47.7 mL/min/mg protein for the high type. Among the recombinant UGTs (13 isoforms) examined, UGT2B7 and UGT2B15 were the most active of catalyzing 4-tOP glucuronidation. Although theKmvalues of UGT2B7 and UGT2B15 were similar (0.36 and 0.42 µM, respectively), the CLintvalue of UGT2B7 (6.83 mL/min/mg protein) >UGT2B15 (2.35 mL/min/mg protein). Strong correlations were observed between the glucuronidation activities of 4-tOP and diclofenac (a probe for UGT2B7) or 4-hydroxybiphenyl (a probe for UGT2B15) with 0.79–0.88 of Spearman correlation coefficient (rs) values. These findings demonstrate that 4-tOP glucuronidation in humans is mainly catalyzed by hepatic UGT2B7 and UGT2B15, and suggest that these UGT isoforms play important and characteristic roles in the detoxification of 4-tOP.
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影响因子:
2.9
作者:
Powis,G;Moore,DJ;Wilke,TJ;Santone,KS
通讯作者:
Santone,KS
DOI:
--
发表时间:
2003
期刊:
Journal of Pediatric Endocrinology & Metabolism (JPEM)
影响因子:
--
作者:
M. Tomboc;S. Witchel
通讯作者:
S. Witchel
DOI:
--
发表时间:
--
期刊:
Anal. Bioanal. Chem. (in press)
影响因子:
--
作者:
M.Nakano;T.Kamo;A.Sugita;T.Handa;中村篤智 他;中村篤智 他;松永克志 他;松永克志 他;溝口照康 他;中村篤智 他;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;M.Kawaguchi et al.;Migaku Kawaguchi;Migaku Kawaguchi;Migaku Kawaguchi;Migaku Kawaguchi;Migaku Kawaguchi;Migaku Kawaguchi;Migaku Kawaguchi;M.Kawaguchi et al.
通讯作者:
M.Kawaguchi et al.
DOI:
--
发表时间:
2000-05
期刊:
Drug metabolism and disposition: the biological fate of chemicals
影响因子:
--
作者:
O. Barbier;D. Turgeon;C. Girard;Mitchell D. Green;T. Tephly;D. Hum;A. Bélanger
通讯作者:
O. Barbier;D. Turgeon;C. Girard;Mitchell D. Green;T. Tephly;D. Hum;A. Bélanger
DOI:
10.1016/j.jchromb.2005.11.050
发表时间:
2006-02
期刊:
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
影响因子:
--
作者:
X. Ye;Z. Kuklenyik;L. Needham;A. Calafat
通讯作者:
X. Ye;Z. Kuklenyik;L. Needham;A. Calafat