Abstract:
:Chelerythrine, a potent inhibitor of protein kinase C (PKC), was evaluated for its effect on inositol phosphate (IP) metabolism in newborn rat cardiomyocytes in culture. In a first step, we evaluated the effect of chelerythrine on IP accumulation in basal conditions. For a 10(-4) M dose, 5-phosphatase activity (which dephosphorylates IP3 into IP2) was completely blocked and we observed a large increase in IP accumulation limited to IP2 without any increase in IP3, strongly suggesting that chelerythrine at this dose modifies IP metabolism. At a lower dose (10(-5) M) of chelerythrine, which did not modify IP accumulation and 5-phosphatase activity in basal conditions, the response to angiotensin II stimulation was completely abolished by the addition of chelerythrine. We conclude thus that chelerythrine, even at 10(-5) M, interacts markedly with IP metabolism, and caution should be exerted when interpreting the results obtained with this drug, which is still currently used at this dose.
journal_name
Fundam Clin Pharmacoljournal_title
Fundamental & clinical pharmacologyauthors
Le Corvoisier P,Lacotte J,Laplace M,Crozatier Bdoi
10.1046/j.1472-8206.2002.00069.xsubject
Has Abstractpub_date
2002-02-01 00:00:00pages
31-7issue
1eissn
0767-3981issn
1472-8206pii
069journal_volume
16pub_type
杂志文章abstract::Drug-drug interactions (DDIs) between antihypertensive drugs and non-steroidal anti-inflammatory drugs (NSAIDs) can lead to adverse drug reactions (ADRs). Guidelines are available to help prescribers deal with these drug associations, but their implementation is not well evaluated. The aims of this study were to asses...
journal_title:Fundamental & clinical pharmacology
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doi:10.1111/fcp.12014
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journal_title:Fundamental & clinical pharmacology
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abstract::Research in the last two decades has unveiled an important role for neuroinflammation in the degeneration of the nigrostriatal dopaminergic (DA) pathway that constitutes the pathological basis of the prevailing movement disorder, Parkinson's disease (PD). Neuroinflammation is characterized by the activation of brain g...
journal_title:Fundamental & clinical pharmacology
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journal_title:Fundamental & clinical pharmacology
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journal_title:Fundamental & clinical pharmacology
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abstract:OBJECTIVE:The aim of this study was to investigate the effects of intracoronary bradykinin (BK) infusion on noradrenaline release and ventricular arrhythmias induced by coronary occlusion and reperfusion in the anesthetized dog. METHODS:14 anesthetized adult mongrel dogs of either sex underwent a 60 min occlusion of t...
journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章,评审
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章,评审
doi:10.1111/j.1472-8206.1989.tb00474.x
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abstract::We investigated the underlying mechanisms of penehyclidine hydrochloride (PHC), a novel selective anticholinergic drug on isolated rat uterus. The method of radio-immunity assay was further employed to determine cyclic adenosine mono phosphate (cAMP) levels in isolated rat uterus for comparing with selective effect on...
journal_title:Fundamental & clinical pharmacology
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abstract::Gait disorders form one component of the axial disorders observed in Parkinson's disease (PD). Indeed, short steps with a forward-leaning stance are diagnostic criteria for PD in the early stages of the condition. Gait disorders also represent a major source of therapeutic failure in the advanced stages of PD (with th...
journal_title:Fundamental & clinical pharmacology
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章
doi:10.1046/j.1472-8206.2002.00092.x
更新日期:2002-08-01 00:00:00
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章,评审
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更新日期:2008-12-01 00:00:00
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journal_title:Fundamental & clinical pharmacology
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journal_title:Fundamental & clinical pharmacology
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abstract::In previous studies, the relaxant, anticholinergic (functional antagonism) antihistaminic, effects of Nigella sativa have been demonstrated on guinea-pig tracheal chains. In the present study, the prophylactic effect of boiled extract of N. sativa on asthmatic disease was examined. Twenty-nine asthmatic adults were ra...
journal_title:Fundamental & clinical pharmacology
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abstract::It has been suggested that salicylate hydroxylation can be used to detect hydroxyl radical formation in vivo. In the present study we investigated the effects of verapamil and or ryanodine on salicylate (SA) and its hydroxylated adduct; 2,3-dihydroxybenzoic acid (2,3-DHBA) levels in glutamate induced neurotoxicity of ...
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journal_title:Fundamental & clinical pharmacology
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journal_title:Fundamental & clinical pharmacology
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doi:10.1111/j.1472-8206.1994.tb00812.x
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abstract::This study evaluated the effects of the isolated use of a low dose of methyltestosterone (MT) on cardiovascular reflexes and hormonal levels and its geno- and cytotoxic safety in ovariectomized rats. Female Wistar rats were divided into four groups (n = 6), respectively: SHAM (received vehicle methylcellulose 0.5%), S...
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章,meta分析
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章
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journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章
doi:10.1111/j.1472-8206.2007.00541.x
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abstract::The aim of this analysis was to compare vasoreactive properties of internal thoracic arteries (ITA) grafts from diabetic (DM) to those of non-diabetic (ND) patients. Ring segments of ITA, taken from patients undergoing coronary artery bypass grafting, were suspended in organ bath chambers filled with modified Krebs-He...
journal_title:Fundamental & clinical pharmacology
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abstract::Drugs have side effects that manifest as signs or symptoms which are sometimes undistinguishable from signs or symptoms of active disease. The conventional approximation of the rate of side effects of drugs is by subtracting the rate of signs and symptoms in the placebo group from that in the drug group. This measures...
journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章
doi:10.1111/j.1472-8206.1995.tb00537.x
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abstract::In therapeutic trials, quality of life studies are usually based on a health model which results in a restrictive view. Therefore, it is important to clearly define the concept of the quality of life, since ambiguous concepts can alter the results. The key to this problem is the clear distinction between the two compo...
journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章,评审
doi:10.1111/j.1472-8206.1992.tb00120.x
更新日期:1992-01-01 00:00:00
abstract::In this review, the major enzyme systems involved in vivo in the oxidative metabolism of xenobiotic amines in humans are discussed, i.e. the monooxygenases [cytochrome P450 system (CYPs) and flavin-containing monooxygenases (FMOs)] and the amine oxidases (AOs). Concerning the metabolism of xenobiotic amines (drugs in ...
journal_title:Fundamental & clinical pharmacology
pub_type: 杂志文章,评审
doi:10.1111/j.1472-8206.2007.00498.x
更新日期:2007-10-01 00:00:00