Abstract：
:Although the induction of cytochromes P450 3A (CYP3A) is relatively well characterized in liver, its inducibility in an easily available tissue such as the peripheral leukocytes is not known. The purpose of this study was, therefore, to determine if CYP3A is inducible in vivo in peripheral leukocytes. Microsomes from rat leukocytes and liver were examined for CYP3A protein expression using Western blotting with a rabbit polyclonal antibody against rat CYP3A. Although CYP3A was not detected in control leukocytes, in vivo treatment with known CYP3A inducers (dexamethasone, clotrimazole, phenobarbital, pregnenolone-16 alpha-carbonitrile) resulted in CYP3A leukocyte levels of 0.2-0.8 pmol/mg protein. This leukocyte induction was approximately 1000-fold lower than in induced liver. Interestingly, there was an apparent linear relationship between leukocyte and liver CYP3A contents (r2 = 0.748, n = 29). These results not only demonstrate for the first time that CYP3A is inducible in rat leukocytes after in vivo treatment with various CYP3A inducers, but also suggest that peripheral leukocytes could be used to assess induction in vivo.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Mahnke A,Roos PH,Hanstein WG,Chabot GGdoi
10.1016/0006-2952(96)00095-0subject
Has Abstractpub_date
1996-06-14 00:00:00pages
1579-82issue
11eissn
0006-2952issn
1873-2968pii
0006-2952(96)00095-0journal_volume
51pub_type
杂志文章abstract：:Targeting of deregulated protein tyrosine kinases has been proposed as a new approach in the therapeutic intervention against pathological processes including proliferative disorders and cancer. Using a screening approach based on a comparative evaluation of antiproliferative effects in a panel of tumor cells with dif...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(00)00278-1
更新日期：2000-06-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(98)00015-x
更新日期：1998-07-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(99)00356-1
更新日期：2000-03-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(00)00306-3
更新日期：2000-06-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2011.04.015
更新日期：2011-08-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(93)90009-l
更新日期：1993-05-25 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(94)00385-8
更新日期：1994-12-16 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90635-7
更新日期：1989-10-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2005.04.037
更新日期：2005-08-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章,评审
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更新日期：2003-10-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90371-9
更新日期：1982-04-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(86)90326-6
更新日期：1986-05-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2009.10.014
更新日期：2010-03-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90375-s
更新日期：1992-09-25 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(00)00301-4
更新日期：2000-07-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2004.02.028
更新日期：2004-07-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(81)90336-1
更新日期：1981-09-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90275-x
更新日期：1989-03-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(85)90533-7
更新日期：1985-07-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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更新日期：1986-03-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90423-g
更新日期：1992-08-18 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2006.12.016
更新日期：2007-05-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.bcp.2019.113739
更新日期：2020-02-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(86)90399-0
更新日期：1986-09-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90184-k
更新日期：1992-05-28 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90260-x
更新日期：1982-09-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(83)90652-4
更新日期：1983-01-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2006.03.004
更新日期：2006-08-28 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90119-6
更新日期：1989-10-15 00:00:00
abstract：:Chiral inversion at a sulphoxide position of flosequinan enantiomers [(+/-)-7-fluoro-1-methyl-3-methylsulphinyl-4-quinolone] occurred in conventional rats but not in either germ-free rats or rats treated with antibiotics after an oral administration of each enantiomer. Thus, it was postulated that the chiral inversion...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(94)90093-0
更新日期：1994-07-19 00:00:00
