Abstract:
:The use of therapeutic drug monitoring strategies for cyclosporin (CsA) has evolved markedly in recent years since previous consensus guidelines were presented. Apart from the introduction of some new methods, the major change has been the shift away from the traditional predose/trough (C0) sample. The most popular alternative has been shown to be a 2-hour postdose (C2) sample. This has presented a challenge to clinical laboratories where typical C2 sample concentrations exceed the upper limit of the calibration range for their chosen CsA method, hence requiring an accurate dilution to be performed. Data from the Australian/New Zealand survey, as well as that in the International CsA Proficiency Testing Program, have demonstrated both a plethora of dilution protocols and resultant widespread failure of many laboratories to obtain accurate results. This paper compares data from several independent sources, pointing to international problems for reliable CsA measurement in clinical laboratories. This includes the CsA method selection criteria adopted by a large percentage of laboratories in various surveys, indicating that the least specific mFPIA methods have been widely adopted.
journal_name
Ther Drug Monitjournal_title
Therapeutic drug monitoringauthors
Morris RG,Holt DW,Armstrong VW,Griesmacher A,Napoli KL,Shaw LM,IFCC\/IATDMCT Joint Working Group.doi
10.1097/00007691-200404000-00025subject
Has Abstractpub_date
2004-04-01 00:00:00pages
227-30issue
2eissn
0163-4356issn
1536-3694journal_volume
26pub_type
杂志文章abstract::Pediatric patients with leukemia, other malignancies, and rheumatological disease receive methotrexate chronically. Because of the documented correlation between methotrexate levels of compliance and clinical outcome, it is conceivable to verify appropriate systemic exposure to the drug. Saliva sampling may be of pote...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199506000-00006
更新日期:1995-06-01 00:00:00
abstract::A radioimmunoassay (RIA) procedure for the determination of sulforidazine in human plasma was developed using an antiserum raised in rabbits immunized with N-(2-carboxyethyl)desmethylsulforidazine-porcine thyroglobulin conjugate. The RIA procedure can measure as low as 40 pg of sulforidazine in a 200-microliter human ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198802000-00016
更新日期:1988-01-01 00:00:00
abstract::Therapeutic drug monitoring (TDM) is commonly employed to optimize the dosing of certain drugs, including digoxin, aminoglycosides, theophylline, and phenytoin. Studies were reviewed in order to (a) evaluate the effect of TDM on the occurrence of toxic drug reactions (TDRs) and (b) identify factors that may modify or ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,meta分析
doi:10.1097/00007691-199001000-00013
更新日期:1990-01-01 00:00:00
abstract::Plasma concentration-antidepressant response relationships for dothiepin, nordothiepin, dothiepin-S-oxide, and nordothiepin-S-oxide were investigated in 50 patients (33 women and 17 men), who had had a major depressive episode. Depression and anxiety were assessed at the start of therapy and after 2 and 4 weeks by mea...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章
doi:10.1097/00007691-199310000-00001
更新日期:1993-10-01 00:00:00
abstract::Phenytoin is an anticonvulsant that requires therapeutic drug monitoring. Recently, Bayer HealthCare, Diagnostics Division released a turbidimetric immunoassay of phenytoin on the ADVIA 1650 analyzer. We evaluated the analytic performance of this assay by comparing values obtained in 52 patients receiving Phenytoin us...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/01.ftd.0000164315.13825.dd
更新日期:2005-06-01 00:00:00
abstract::The DuPont theophylline assay reagent kit, a particle-enhanced turbidimetric inhibition immunoassay (PETINIA) method adapted for use on a centrifugal fast analyzer, was evaluated. It was compared with fluorescence polarization immunoassay (FPIA). Day-to-day precision was 4.7% at 6.8 micrograms/ml, and 3.3% at 26.6 mic...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198606000-00019
更新日期:1986-01-01 00:00:00
abstract::Studies examining associations between antidepressant response and plasma levels of bupropion and its metabolites have yielded contradictory findings. There have been no such studies in youth. This study explored such associations in 8 boys and 8 girls, age 11 to 17 years, all prescribed bupropion sustained release (S...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章
doi:10.1097/01.ftd.0000197093.92559.7a
更新日期:2006-04-01 00:00:00
abstract::Mycophenolic acid, the active metabolite of the immunosuppressant and antiproliferative agent, mycophenolate mofetil, is primarily metabolized by glucuronidation to the inactive 7-O-glucuronide. Although the uridine diphosphate (UDP) 7-O-glucuronide is the principal excretion product of this drug, carboxyl-linked gluc...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,评审
doi:10.1097/00007691-200002000-00002
更新日期:2000-02-01 00:00:00
abstract:BACKGROUND:Analysis of residual gene expression of the nuclear factor of activated T cell (NFAT)-regulated genes has been developed as a pharmacodynamic biomarker to monitor therapy with calcineurin inhibitors. The availability of commercial primer sets (Search-LC) and the well-established assay protocol makes this bio...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000340
更新日期:2016-12-01 00:00:00
abstract::A noninstrumented enzyme immunochromatography (EIC) method for monitoring carbamazepine using whole blood was compared to the enzyme-multiplied immunoassay technique (EMIT), fluorescence polarization immunoassay (FPIA), and high-performance liquid chromatography (HPLC). Samples from 74 patients were evaluated in the c...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND:The Clinical Pharmacology Quality Assurance (CPQA) program provides semiannual proficiency testing (PT) of antiretroviral analytes for 11 US and international clinical pharmacology laboratories (CPLs) to ensure interlaboratory comparability. In this article, we provide estimates of the main sources of variab...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000612
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Dried blood spot (DBS) sampling is a blood collection tool that uses a finger prick to obtain a blood drop on a DBS card. It can be used for therapeutic drug monitoring, a method that uses blood drug concentrations to optimize individual treatment. DBS sampling is believed to be a simpler way of blood collec...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000659
更新日期:2019-12-01 00:00:00
abstract::A neurophysiologic test battery (consisting of a 24-hour, seven-channel electroencephalogram [EEG], EEG spectral analysis, multiple sleep latency test, visual evoked potentials, critical flicker fusion, and visual contrast sensitivity) was administered twice to 16 patients with juvenile myoclonic epilepsy (JME) in a d...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199902000-00014
更新日期:1999-02-01 00:00:00
abstract::The postulated therapeutic activity of nortriptyline metabolites has prompted investigation of dosage adjustments based on plasma levels of nortriptyline (NT) and its metabolites. The method assumes that metabolite concentrations vary independently of nortriptyline concentrations among patients. This study tests that ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198905000-00001
更新日期:1989-01-01 00:00:00
abstract::The monitoring of plasma olanzapine concentrations has been found to be an important and useful tool for optimizing psychiatric treatment. The present study investigated the effect that clinical factors, such as smoking and age, and functional polymorphisms of UGT1A4, CYP1A2, and CYP2D6 genes have on plasma olanzapine...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0b013e31816336fd
更新日期:2008-02-01 00:00:00
abstract::This study develops a population pharmacokinetic model for lamotrigine (LTG) in Spanish and German patients diagnosed with epilepsy. LTG steady-state plasma concentration data from therapeutic drug monitoring were collected retrospectively from 600 patients, with a total of 1699 plasma drug concentrations. The data we...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0b013e31817fd4d4
更新日期:2008-08-01 00:00:00
abstract::The purpose of the present study was to examine the effects of rifampicin on the single oral dose pharmacokinetics and pharmacodynamics of brotizolam. Thirteen healthy male volunteers received rifampicin 450 mg/day, or matched placebo, for 7 days in a double-blind randomized crossover manner. On the sixth day they rec...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,随机对照试验
doi:10.1097/01.ftd.0000200010.33430.0e
更新日期:2006-06-01 00:00:00
abstract::During the past two decades, in association with the commencement of chronic dialysis therapy and prolongation of the uremic state, aluminum toxicity has represented a major cause of morbidity and mortality in uremic patients. The uremic patient has been found to be at higher risk of aluminum loading and toxicity from...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,评审
doi:10.1097/00007691-199312000-00025
更新日期:1993-12-01 00:00:00
abstract::The greater and more consistent absorption of cyclosporine from the microemulsion formulation (Neoral; Novartis Pharmaceuticals Ltd., Frimley, UK) when compared with that from the original form (Sandimmune; Novartis Pharmaceuticals Ltd., Frimley, UK) results in greater systemic exposure. Lung transplant recipients cou...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199902000-00004
更新日期:1999-02-01 00:00:00
abstract::To develop a new method for quantifying fluoconazole in human plasma and to compare the bioavailability of two fluconazole capsule formulations, an open, randomized, two-period crossover study with a one-week washout interval was conducted in 24 healthy volunteers. Plasma samples were obtained up to 168 hours after dr...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199904000-00010
更新日期:1999-04-01 00:00:00
abstract::In a phase I-II study, the authors evaluated the intracellular pharmacokinetics, toxicity, and efficiency of a high dose of mitoxantrone given as first induction in acute non-lymphocytic leukemia. Twenty-two patients with previously untreated de novo ANLL were included and received 30 or 40 mg/m2 mitoxantrone on day 1...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章
doi:10.1097/00007691-199812000-00010
更新日期:1998-12-01 00:00:00
abstract:BACKGROUND:Antiepileptic drug therapeutic regimens often need to be adjusted individually on the basis of serum assays. We aimed to develop a quantitative, fast, and sensitive liquid chromatography-tandem mass spectrometry method to simultaneously analyze carbamazepine, oxcarbazepine, and the 10-11 epoxide carbamazepin...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0b013e3182425168
更新日期:2012-02-01 00:00:00
abstract::The clinical usefulness of cyclosporine is hampered by dose-limiting toxicities to the kidney that are not predicted by drug levels in serum or whole blood. Because of its lipophilic nature, circulating plasma lipoproteins may play a role in drug disposition. This study characterized the pharmacokinetic parameters of ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199003000-00004
更新日期:1990-03-01 00:00:00
abstract:BACKGROUND:Current gentamicin dosing algorithms in adult populations target a high peak concentration (Cmax) assuring efficacy and a drug-free period (concentration <0.5 mg/L) preventing toxicity. In contrast, gentamicin-based regimens in neonatal sepsis often aim for lower peak levels and trough concentrations of 0.5-...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000283
更新日期:2016-06-01 00:00:00
abstract::In this report we describe a rapid and sensitive micromethod using high performance liquid chromatography (HPLC) with electrochemical detection (ED) to measure morphine concentration in serum or plasma. The separation of morphine and the internal standard 5-hydroxyquinoline, from interfering compounds present in plasm...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198208000-00010
更新日期:1982-01-01 00:00:00
abstract::The authors describe a reverse-phase high-performance liquid chromatography-electrospray-tandem mass spectrometry method for the measurement of nicotine in human plasma. Samples (500 microL) with added deuterium-labeled d3-nicotine as an internal standard (IS) were treated with a 2-step process of ether extraction (6 ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200410000-00015
更新日期:2004-10-01 00:00:00
abstract::The aims of this study were to determine the relationship between saliva and plasma methadone concentrations and the influence of variability in saliva pH. Saliva and plasma samples were taken before the daily dose of methadone in 60 patients undergoing methadone maintenance treatment (MMT). Saliva pH was measured imm...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/01.ftd.0000164392.01779.db
更新日期:2005-10-01 00:00:00
abstract::Sirolimus is a new immunosuppressive drug that has been evaluated in animal experiments. The current study was conducted on humans with reformulated sirolimus in doses from 3 mg/m2 to 15 mg/m2. Sixteen renal transplant recipients were included in this phase I study to determine the safety, tolerance, and preliminary p...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199708000-00007
更新日期:1997-08-01 00:00:00
abstract::Fentanyl, sufentanil, and morphine are commonly used in the conduct of anesthesia. Medical staff working with these drugs are at high risk of addiction. To detect and prevent diversion, a method was developed to quantify these drugs in discard syringes using the BioRad REMEDi HS Drug Profiling System. For fentanyl, th...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200210000-00014
更新日期:2002-10-01 00:00:00
abstract::Two hundred milligrams of valproic acid (VPA) was administered orally to seven healthy adults at 9:00 and 21:00 h for 5 consecutive days, including the morning dose on day 6. On the sixth day, blood samples were drawn at 0, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 3, and 6 h after the morning dose. Binding of VPA to serum prote...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199202000-00009
更新日期:1992-02-01 00:00:00