Abstract:
:Despite the introduction of newer drugs, the atypical antipsychotic clozapine remains the most effective drug in psychotic patients who are resistant to treatment with conventional agents. Optimal therapeutic responses to clozapine have been reported with serum concentrations between 350 microg/L and 1000 microg/L. Clozapine is frequently combined with other drugs to enhance efficacy and reduce adverse reactions but pharmacokinetic interactions can have a significant impact on drug response. The majority of the interactions with clozapine are reported to be mediated by cytochrome P450 (CYP) enzymes. CYP1A2 has a major role in the oxidative metabolism of clozapine, with a minor contribution from CYP3A4, and possibly CYP2D6, CYP2C9 and CYP2C19. Interactions mediated by potent CYP1A2 inhibitors (such as fluvoxamine) or inducers (like cigarette smoke) appear to be consistent, predictable and usually clinically significant. There are many case reports of interactions between clozapine and weak CYP1A2 inhibitors or inducers which are also potent inhibitors or inducers of CYP3A4 or CYP2D6. Researchers often explain these observations on the basis of the CYP1A2 involvement. In addition, there are case reports of clinically significant interactions between clozapine and drugs that are not substrates, inhibitors or inducers of CYP1A2. These interactions are difficult to predict and may not be consistent, as reflected by the conflicting literature reports. Further research to elucidate individual differences in clozapine metabolism, with the potential to detect the dominant roles of CYPs other than CYP1A2, may assist us in predicting these interactions.
journal_name
Curr Drug Metabjournal_title
Current drug metabolismauthors
Chetty M,Murray Mdoi
10.2174/138920007780655469subject
Has Abstractpub_date
2007-05-01 00:00:00pages
307-13issue
4eissn
1389-2002issn
1875-5453journal_volume
8pub_type
杂志文章,评审abstract::The pressing need for targeting, detecting, monitoring, and treating diseased cells concomitantly gives rise to multi-functional nanomedicines, especially those that can combine diagnostic and therapeutic abilities, which are referred to as nanotheranostics. Recently, nanotheranostics are of significant clinical inter...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200211314060003
更新日期:2013-07-01 00:00:00
abstract::The transcription factor networks that regulate basal and xenobiotic-modulated expression of the hepatic sulfotransferases affect the dynamics of xenobiotic detoxication, carcinogen bioactivation and metabolic homeostasis. Emerging evidence suggests that liver-enriched transcription factors, the aryl hydrocarbon (Ah) ...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200054633871
更新日期:2005-08-01 00:00:00
abstract:BACKGROUND:In the last few years, the use of modified Carbon Nanomaterials (CNMs) for theranostics (therapeutic and diagnosis) applications is a new and rapidly growing area in pharmacy and medical fields. Owing to this, their specific physicochemical behaviors like high stability, drug loading, surface area to volume ...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200219666180925094515
更新日期:2019-01-01 00:00:00
abstract::L-Carnitine has important roles in intermediary metabolism and patients with end-stage renal disease who are undergoing hemodialysis may develop a secondary L-carnitine deficiency. The extent of accumulation of the metabolites trimethylamine and trimethylamine-N-oxide when L-carnitine is administered orally has not be...
journal_title:Current drug metabolism
pub_type: 临床试验,杂志文章
doi:10.2174/138920006778520561
更新日期:2006-10-01 00:00:00
abstract:BACKGROUND:Drug-metabolizing enzymes and transporters play key roles in drug disposition and drug interactions. The alterations of their expression will influence drug pharmacokinetics and pharmacodynamics. However, the changes in the expression of enzymes and transporters in the disease state are still unclear. OBJEC...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/1389200221666200512113731
更新日期:2020-01-01 00:00:00
abstract::Metabolism of xenobiotics is often seen as an exclusive function of the liver, but some current findings support the notion that the lungs, kidneys and intestine may contribute considerably. After the establishment of the use of liver slices as a useful in vitro model to study metabolism and toxicity of xenobiotics, t...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200023338071
更新日期:2002-02-01 00:00:00
abstract::We report here a comprehensive evaluation of the effects of culture duration on the gene expression of P450 isoforms, uptake transporters and efflux transporters in human hepatocyte cultured in the absence and presence of the prototypical proinflammatory cytokine, interleukin-6 (IL-6). Primary collagen-matrigel sandwi...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/138920012802138570
更新日期:2012-09-01 00:00:00
abstract::Brain, the centre of the nervous system and an integral part the body, is protected by two anatomical and physiological barriers- Blood-Brain Barrier (BBB) and Blood-Cerebrospinal Fluid Barrier (BCSFB). Blood-Brain Barrier is a very complex and highly organized multicellular structure that shields the brain from harmf...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200218666170113125132
更新日期:2017-01-01 00:00:00
abstract:OBJECTIVES:Induction or inhibition of cytochrome P450 (CYP) enzyme activities, enzymes that activate or detoxify xenobiotics, is one mechanism by which vegetables may alter cancer risk. As the effect of food on CYP enzyme activities have not been studied in the Jordanian population, we examined the effect of supplement...
journal_title:Current drug metabolism
pub_type: 临床试验,杂志文章
doi:10.2174/138920007779315080
更新日期:2007-01-01 00:00:00
abstract::Talin is an intracellular cytoskeletal protein and one of the major components of the focal adhesion complex. It mainly acts as an interlink between transmembrane integrin receptors and cytosolic F-actin. Apart from integrins and actin, it also interacts with various other proteins in the adhesion complex to regulate ...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/1389200221666200214114018
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Kidney dysfunction resulting from various drugs is an important issue during the drug development process. Traditional in vivo animal experiments are limited with respect to evaluating drug efficacy and nephrotoxicity due to discrepancies in drug pharmacokinetics and pharmacodynamics between humans and anima...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200219666180309101844
更新日期:2018-01-01 00:00:00
abstract::Work on human immortalized cell lines is not considered research on human subjects, but does involve biohazards. It has also been estimated that about 80% of human cell lines are the kind of cells that they are expected. Cells that are cultured directly from a subject are referred to as primary cells. Clonetics is the...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/138920008783884768
更新日期:2008-03-01 00:00:00
abstract::With the advances in recombinant DNA biotechnology, molecular biology and immunology, the number of biotech drugs, including peptides, proteins and monoclonal antibodies, available for clinical use has dramatically increased in recent years. Although pharmacokinetic principles are equally applicable to the large molec...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/138920009789895499
更新日期:2009-09-01 00:00:00
abstract::Transporters for organic anions and organic cations in kidney, liver, intestine, brain, and placenta play essential roles in drug disposition. The cloning and characterization of these transporters have significantly advanced our understanding of the molecular and cellular mechanisms of the drug disposition process. T...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200043489207
更新日期:2004-02-01 00:00:00
abstract::Membrane transporters play an important role in intestinal absorption, distribution and clearance of drugs. Additionally transporters along with enzymes regulate tissue exposures (e.g. liver, kidney and brain), which are important for safety and efficacy considerations. Early identification of transporters involved gu...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/1389200221999210101233340
更新日期:2021-01-01 00:00:00
abstract::During the lifetime, our cells encounter many challenges to their own existence. The survival of organisms and cells depends on the interplay within a complex, yet precisely orchestrated network of proteins. Since the discovery of the Rel/NF-kappaB family of transcription factors, the research has never come to a stop...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/138920010791196283
更新日期:2010-03-01 00:00:00
abstract::New chemical entities are routinely screened in vitro and in vivo for their ability to induce cytochrome P450s (CYP), other drug-metabolizing enzymes and possibly transporters in an attempt to more accurately predict clinical parameters such as drug-drug interactions and clearance in humans. Some of these potential th...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200033489352
更新日期:2003-10-01 00:00:00
abstract:OBJECTIVE:Tyrosine kinase inhibitors (TKIs) are widely used drugs which have high availability in reducing the activity of BCR-ABL1 tyrosine kinase, therefore they play an indispensable role in the treatment of Chronic myeloid leukemia (CML). Imatinib, dasatinib and nilotinib have been proved to have absolute bioavaila...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200218666170116113705
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:The metabolic/biotransformation pathways of atypical antipsychotics (aripiprazole, clozapine, iloperidone, olanzapine, paliperidone, quetiapine, risperidone, and ziprasidone) have been characterized and reviewed. However, comparisons of excretory pathways remain unexplored. OBJECTIVE:To analyze the excretio...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/138920010791636202
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:It is well known that ethanol can cause significant morbidity and mortality, and much of the related toxic effects can be explained by its metabolic profile. OBJECTIVE:This work performs a complete review of the metabolism of ethanol focusing on both major and minor metabolites. METHOD:An exhaustive litera...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200217666160125113806
更新日期:2016-01-01 00:00:00
abstract::Arachidonic acid (AA) is metabolized by enzymes of the cytochrome P450 (CYP) 4A and CYP4F subfamilies to 20- hydroxyeicosatetraeonic acid (20-HETE), which plays an important role in the cardiovascular system. In the current work, we reviewed the formation of 20-HETE in different species by different CYPs; 20-HETE meta...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200211314060007
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:Interleukin-28B (IL28B) locus on a human chromosomal region mapped to 19q13 execute immune defense against viruses. During Hepatitis C Virus (HCV) infection the IL28B has a promising role in deciding the consequence of infection for spontaneous clearance of viruses or causing chronic liver infection. Treatme...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200219666180129115359
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Despite major advances in transplant medicine, antibody-mediated rejection (AMR) continues to have severe clinical implications and adversely affect graft survival. Therefore, the search for alternative drugs to treat AMR is widely pursued. The first-in-class proteasome inhibitor bortezomib (BZ) is a selecti...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200218666171121100716
更新日期:2017-01-01 00:00:00
abstract::The present study was designed to investigate the hepatic disposition of the prodrug AM365 and the generated antiviral guanosine analogue, AM188 in the isolated perfused rat liver (IPL). The livers of rats (n=12) were isolated and perfused with Krebs-Henseleit pH 7.4 buffer to which AM365 was added as a bolus to achie...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/138920005774330611
更新日期:2005-10-01 00:00:00
abstract:: ...
journal_title:Current drug metabolism
pub_type: 社论
doi:10.2174/138920022006190617104713
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Drug-induced cholestasis is a risk factor in the progression of drug candidates, and poses a serious health hazard if not detected before going into a human. Intrahepatic accumulation of Bile Acids (BAs) represents a characteristic phenomenon associated with drug-induced cholestasis. METHODS:This review wil...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/1389200219666180427165035
更新日期:2018-01-01 00:00:00
abstract::The in vivo hepatic clearance of tanshinone IIA in the rat was predicted using microsome, cytosol and S9 fractions combined with two different cofactor systems, NADPH-regenerating and UDPGA system. Two different models, the well stirred model and the parallel-tube model, were used in predicting the in vivo clearance i...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/138920008783331103
更新日期:2008-01-01 00:00:00
abstract::Currently the major research highlights of bioengineering and medical technology are directed towards development of improved diagnostic techniques to screen complex diseases. Screening requirements are to identify the cause of illnesses, monitor improvement or progression of the state of diseases such as cancer, card...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:
更新日期:2015-01-01 00:00:00
abstract::The binding of drugs with serum proteins can affect the activity, distribution, rate of excretion, and toxicity of pharmaceutical agents in the body. One tool that can be used to quickly analyze and characterize these interactions is high-performance affinity chromatography (HPAC). This review shows how HPAC can be us...
journal_title:Current drug metabolism
pub_type: 杂志文章,评审
doi:10.2174/138920011795202938
更新日期:2011-05-01 00:00:00
abstract::The nature and level of systemic exposure to the active herbal constituents will profoundly affect their effects at action sites, which is fundamental in understanding their roles in the overall beneficial effects of a herbal medicine. The objective of this study is to gain a full picture of the systemic exposure to v...
journal_title:Current drug metabolism
pub_type: 杂志文章
doi:10.2174/1389200211209050494
更新日期:2012-06-01 00:00:00