Abstract：
:The normal sexual dimorphism in murine hepatic hexobarbital metabolism (i.e. females greater than males) was found to be absent in senescent animals. Hexobarbital metabolism, expressed as microsomal activity of hexobarbital hydroxylase and hexobarbital-induced sleep time, in senescent male mice was similar to that in females, but significantly greater than that found in young adult males. No age-related changes in hexobarbital metabolism were observed in intact females. In addition, experiments involving gonadectomies and testosterone administration indicated that both male and female senescent mice were insensitive to the normally repressive effects of androgens on hexobarbital hydroxylase. In contrast, the sexual dimorphism in the activity of p-nitrophenol UDP-glucuronosyltransferase was maintained in the senescent mice as well as the usual responsiveness to testosterone regulation. Furthermore, the growth-promoting effects of androgen on the kidneys and seminal vesicles were similarly expressed in young and old mice. Thus, our results suggest the development of an age-dependent and selective insensitivity of hexobarbital hydroxylase to androgenic regulation in the aging mouse.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Niedermeyer TM,Shapiro BHdoi
10.1016/0006-2952(88)90724-1subject
Has Abstractpub_date
1988-01-15 00:00:00pages
241-6issue
2eissn
0006-2952issn
1873-2968pii
0006-2952(88)90724-1journal_volume
37pub_type
杂志文章abstract：:A compound, YM-53792, was identified as an inhibitor of interleukin-2 (IL-2) gene promoter activity, using a Jurkat cell-based reporter system in which the luciferase gene is regulated by the IL-2 gene promoter. Production of IL-2, interleukin-4 (IL-4) and interleukin-5 (IL-5) from human peripheral blood mononuclear c...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(97)00289-x
更新日期：1997-11-01 00:00:00
abstract：:In the present study, a screen of adenosine analogs as potential modulators of arylamine-N-acetyltransferase 1 activity identified ATP as an inhibitor within its range of physiological concentrations. Kinetically, ATP was a non-competitive inhibitor with respect to the acetyl acceptor but a competitive inhibitor with ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2018.10.013
更新日期：2018-12-01 00:00:00
abstract：:Double-labelled [methyl-14C,5-3H]CDPcholine has been synthesized and subjected to a pharmacokinetic analysis in several biological systems. In transport experiments with intact human erythrocytes no incorporation of radioactivity is observable. On the other hand the results obtained with perfused rat liver suggest a r...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(85)90204-7
更新日期：1985-12-01 00:00:00
abstract：:The human platelet thromboxane A2/prostaglandin H2 receptor has been purified 6100-fold to apparent homogeneity by a three-step chromatographic procedure with an overall yield of 6%. A 6-fold purification of the receptor was first achieved by chromatography of 3-[(3-cholamidopropyl)dimethyl-ammonio]-1-propanesulfonate...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90294-s
更新日期：1992-01-22 00:00:00
abstract：:Neutrophil accumulation response to cigarette smoke (CS) in humans and animal models is believed to play an important role in pathogenesis of many tobacco-related lung diseases. Here we evaluated the lung anti-inflammatory effect of aspirin and indomethacin in mice exposed to CS. C57BL/6 mice were exposed to four ciga...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2008.12.012
更新日期：2009-03-15 00:00:00
abstract：:Four pseudo-symmetrical tamoxifen derivatives, RID-B (13), RID-C (14), RID-D (15), and bis(dimethylaminophenetole) (16), were synthesized via the novel three-component coupling reaction, and the structure-activity relationships of these pseudo-symmetrical tamoxifen derivatives were examined. It was discovered that 13 ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2007.11.005
更新日期：2008-03-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2020.113979
更新日期：2020-07-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90204-9
更新日期：1989-02-15 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：2016-04-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(85)90427-7
更新日期：1985-11-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(99)00277-4
更新日期：2000-02-15 00:00:00
abstract：:Oral administration of tobacco to rats for 21 days caused remarkable stimulation of the metabolism of phenacetin, aniline and benzo[a]pyrene, a carcinogen, by hepatic microsomal mixed function oxidases (MFO). Such treatment for 6 days resulted in a small increase in the activities of phenacetin O-dealkylase and aromat...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90386-0
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(82)90371-9
更新日期：1982-04-15 00:00:00
abstract：:The capacity of cultured bovine adrenal medullary cells to metabolize and export cyclic AMP has been studied. Basal cellular cyclic AMP levels were increased 50% by 100 microM 3-isobutyl-1-methylxanthine (IBMX) and rolipram, a class IV (cyclic AMP-specific) phosphodiesterase (PDE) inhibitor. They were not affected by ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90335-g
更新日期：1992-12-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(93)90133-h
更新日期：1993-02-09 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2017.10.008
更新日期：2017-12-15 00:00:00
abstract：:The pyridazinone derivative zardaverine has recently been introduced as a potent bronchodilator in vivo and in vitro. In addition, zardaverine exerts a positive inotropic action on heart muscle in vitro. The actions of zardaverine are thought to be mediated via inhibition of phosphodiesterase (PDE) activity. Recent da...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(91)90694-z
更新日期：1991-06-21 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(96)00557-6
更新日期：1996-11-22 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(83)90328-3
更新日期：1983-05-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90037-5
更新日期：1982-04-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(91)90113-j
更新日期：1991-05-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(03)00291-0
更新日期：2003-08-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90231-1
更新日期：1989-03-01 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(01)00692-x
更新日期：2001-09-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(91)90591-r
更新日期：1991-10-24 00:00:00
abstract：:Epothilones constitute a novel class of antitubulin agents that are active in patients who relapse after treatment with other chemotherapeutics. This study investigated the molecular mechanisms leading to the onset of epothilone-B (patupilone) resistance in ovarian cancer. Results demonstrated that the Gli family of t...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2012.08.019
更新日期：2012-12-01 00:00:00
abstract：:UDP-glucuronosyltransferases (UGTs) are essential drug-conjugation enzymes that metabolize a variety of endobiotic and xenobiotic substrates. The molecular characteristics of UGTs have been extensively investigated in humans, but remain to be investigated in common marmosets, a nonhuman primate species widely used in ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2019.113748
更新日期：2020-02-01 00:00:00
abstract：:The primary objective of this research was to test the hypothesis that low level lead (Pb) exposure during early life leads to disruption in blood-brain barrier (BBB) function in the young rat. Newborn rats received lead via milk from lactating dams that were drinking water containing 0.1% lead acetate Pb(Ac)2. Pups w...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90491-9
更新日期：1982-05-15 00:00:00
abstract：:Aldehyde dehydrogenase (ALDH) is well known for its involvement in the resistance of tumor cells to cyclophosphamide (CPA) and its activated derivatives, such as 4-hydroperoxy-CPA (4HC). The role of other drug-metabolizing enzymes such as glutathione S-transferase (GST) in CPA resistance is, however, less certain. In ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(95)00079-f
更新日期：1995-05-26 00:00:00
abstract：:Alone and in synergistic combination with retinoids, dietary glucarate inhibits both the chemical induction and growth of rat mammary tumors. To investigate the pharmacokinetics of glucarate, [14C]glucarate was synthesized, converted to the calcium salt, and administered to rats bearing primary mammary tumors. When gi...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(94)90544-4
更新日期：1994-04-29 00:00:00
