Bone marrow toxicity induced by oral benzo[a]pyrene: protection resides at the level of the intestine and liver.
Bone marrow toxicity induced by oral benzo[a]pyrene: protection resides at the level of the intestine and liver.
复制标题
口服苯并[a]芘引起的骨髓毒性:保护作用位于肠道和肝脏水平。
DOI:
10.1016/0041-008x(83)90157-6
复制
发表时间:
1983
影响因子:
3.8
通讯作者:
Nebert,DW
中科院分区:
文献类型:
--
作者:
Legraverend,C;Harrison,DE;Ruscetti,FW;Nebert,DW
The Ah locus encodes a cytosolic receptor that regulates the induction of certain drug-metabolizing enzymes by polycyclic aromatic hydrocarbons such as benzo[a]pyrene. Some inbred mouse strains such as C57BL 6N have the high-affinity Ah receptor (AhbAhb), others such as DBA 2N , the poor-affinity receptor (AhdAhd). Presence of the high-affinity receptor leads to greater cytochrome P1-450 induction by benzo[a]pyrene; in turn, enhanced benzo[a]pyrene metabolism can result in more toxic intermediates or greater detoxication, depending upon the test system studied. Benzo[a]pyrene in the growth medium, in direct contact with cultured myeloid cells, is more toxic to C57BL 6N than DBA 2N cultured cells. Oral benzo[a]pyrene induces P1-450 (measured by benzo[a]pyrene trans-7,8-dihydrodiol formation determined by high-performance liquid chromatography) in C57BL 6N but not DBA 2N intestine and liver. In the bone marrow of oral benzo[a]pyrene-treated C57BL 6N and DBA 2N mice, the magnitude of P1-450 induction is about the same. WB ReJ (AhdAhd), C57BL 6J (AhbAhb), or ( WB ReJ )( C57BL 6J ) F1(AhdAhd) marrow was transplanted into lethally irradiated ( WB ReJ )( C57BL 6J ) F1mice. DBA 2J (AhdAhd) marrow was transplanted into lethally irradiated BALB cByJ (AhbAhb) mice and vice versa. Mice having the AhdAhdintestine and liver died in less than 3 weeks of benzo[a]pyrene feeding (120 mg/kg/day), irrespective of the source of transfused marrow. All the data are consistent with pharmacokinetic differences in the tissue distribution of benzo[a]pyrene: mice having the high-affinity receptor, and therefore the P1-450 induction process in the intestine and liver, are protected from oral benzo[a]pyrene-induced myelotoxicity.
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影响因子:
5.8
作者:
D. W. Nebert;N. M. Jensen
通讯作者:
N. M. Jensen
影响因子:
5.6
作者:
N. Williams;H. Jackson;E. Rabellino
通讯作者:
E. Rabellino
DOI:
10.1016/s0021-9258(18)94484-4
发表时间:
1968
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
D. Nebert;H. Gelboin
通讯作者:
H. Gelboin
影响因子:
6.4
作者:
W. Benedict;J. Gielen;D. Nebert
通讯作者:
D. Nebert
影响因子:
12.5
作者:
P. Routledge;D. Shand
通讯作者:
D. Shand