Abstract:
:Studies of the antidepressant effect and pharmacokinetics of citalopram have been performed in adults, but the effects on children and adolescents have only been studied to a minor extent despite its increasing use in these age groups. The aim of this study was to investigate a group of adolescents treated for depression, with respect to the steady-state plasma concentrations of the enantiomers of citalopram and its demethylated metabolites desmethylcitalopram and didesmethylcitalopram. Moreover, the authors studied the genotypes for the polymorphic cytochrome P450 enzymes CYP2D6 and CYP2C19 in relation to the different enantiomers. The S/R ratios of citalopram and desmethylcitalopram found in this study of 19 adolescents were similar to studies involving older patients. The concentrations of the R-(-)- and S-(+)-enantiomers of citalopram and desmethylcitalopram were also in agreement with values from earlier studies, the R-(-)-enantiomer (distomer) being the major enantiomer. The results indicate that the use of oral contraceptives may have some influence on the metabolism of citalopram. This might be because of an interaction of the contraceptive hormones with the CYP2C19 enzyme.
journal_name
Ther Drug Monitjournal_title
Therapeutic drug monitoringauthors
Carlsson B,Olsson G,Reis M,Walinder J,Nordin C,Lundmark J,Scordo MG,Dahl ML,Bengtsson F,Ahlner Jdoi
10.1097/00007691-200112000-00011subject
Has Abstractpub_date
2001-12-01 00:00:00pages
658-64issue
6eissn
0163-4356issn
1536-3694journal_volume
23pub_type
杂志文章abstract::This study was designed to establish whether plasma lidocaine concentrations changed subsequent to contact with a new formulation of rubber-stopper Vacutainer collection tubes. Plasma lidocaine concentrations from blood samples exposed to rubber stoppers for one hour were compared with concentrations from blood sample...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198712000-00013
更新日期:1987-12-01 00:00:00
abstract::A sensitive method is described for the simultaneous determination of mebendazole and hydroxymebendazole using flubendazole as an internal standard. The analytes were isolated with a single chloroform extraction from 1.0 ml of alkalinized plasma or cyst liquid samples. Separation and quantitation were performed with h...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198406000-00015
更新日期:1984-01-01 00:00:00
abstract::The authors describe a case of furosemide possibly inhibiting the hypoprothrombinemic effect of warfarin. The initiation of furosemide dosing in a patient receiving a stable dose of warfarin was associated with an 28% decrease in the international normalized ration (INR). Using normal volunteers, two previous controll...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199706000-00019
更新日期:1997-06-01 00:00:00
abstract::With the introduction of a cyclosporin monitoring strategy based on the use of a sample collected 2 hours after dosing (C2) rather than the predose sample (C0), there was concern that the differences in blood cyclosporin results from the various assay systems would result in assay-specific target ranges for C2 monitor...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/00007691-200304000-00005
更新日期:2003-04-01 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::Several studies suggest that therapeutic drug monitoring of protease inhibitors and nonnucleoside reverse transcriptase inhibitors may contribute to the clinical outcome of HIV-infected patients. Because of the growing number of antiretroviral drugs and of drug combinations than can be administered to these patients, ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/01.ftd.0000152680.36517.5d
更新日期:2005-04-01 00:00:00
abstract::The TDx digoxin II immunoassay was used in controls and in patients not taking digoxin or any other cardiac glycoside. We report the frequency of interference thought to be caused by digoxin-like factors (DLFs). We found a high incidence of false-positive results in 15 patients with severe hepatic disease (60% false-p...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199111000-00010
更新日期:1991-11-01 00:00:00
abstract::Calculated creatinine clearance (CrCL) estimates are frequently used as estimates of aminoglycoside clearance (AGCL), despite being inadequately studied. Thirty surgical intensive care unit (SICU) patients with stable serum creatinines (0.6-6.3 mg/dl) and steady-state aminoglycoside levels were studied. A one-compartm...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198903000-00006
更新日期:1989-01-01 00:00:00
abstract::Aminoglycosides have rightly remained a cost-effective anti-microbial strategy for the treatment of gram-positive infections for some 25 years. However, in recent years there has been a review of the traditional thrice-daily administration regimen in favor of an extended dosing interval strategy that takes into accoun...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,评审
doi:10.1097/00007691-199908000-00001
更新日期:1999-08-01 00:00:00
abstract::This case report highlights a very rare adverse drug reaction of oral roxithromycin causing toxic epidermal necrolysis (TEN). A 54-year-old male patient diagnosed with upper respiratory tract infection was prescribed oral roxithromycin 150 mg twice daily for 7 days. On the 10th day, the patient was admitted to the eme...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0b013e318260b087
更新日期:2012-08-01 00:00:00
abstract::The relationship between changes in cyclosporin (CyA) dose or CyA blood concentration and the reciprocal creatinine concentration was investigated by cross-correlation analysis over the first 3 postoperative months in 32 consecutive heart and heart-lung recipients. Exploratory analysis suggested that early changes in ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199208000-00003
更新日期:1992-08-01 00:00:00
abstract:BACKGROUND:Tacrolimus is a narrow therapeutic index medication, which requires therapeutic drug monitoring to optimize dosing based on systemic exposure. MITRA microsampling offers a convenient, minimally invasive approach for the collection of capillary blood samples from a fingerprick versus conventional venous blood...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000847
更新日期:2020-12-03 00:00:00
abstract::A stabilized therapeutic drug monitoring procedure incorporating the novel Empore solid-phase extraction membrane (SPEM) for isolation of the antiarrhythmic drugs mexiletine (MEX) and flecainide (FLEC) from serum is described. Routinely, serum (0.5 ml), adjusted to pH 4.5, is passed through an octyl (C8) SPEM to extra...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199210000-00012
更新日期:1992-10-01 00:00:00
abstract::To interpret blood levels of tricyclic antidepressants, we studied the distributions of amitriptyline and nortriptyline in human blood and explored their control by plasma factors. Each compound (300 ng/ml) was added to whole adult blood and to cord blood with decreased alpha-1-glycoprotein (AGP). Drugs (250 ng/ml) we...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199308000-00002
更新日期:1993-08-01 00:00:00
abstract::The performance of the ROCHE FP NAPA reagent, a newly reformulated monoclonal antibody-based fluorescence polarization immunoassay (FPIA) for N-acetylprocainamide, was compared with two commercially available polyclonal antibody-based immunoassays, the Abbott TDx and Syva EMIT. Although excellent correlation was obser...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199406000-00013
更新日期:1994-06-01 00:00:00
abstract::Mixed-effect modeling has been suggested as a possible tool to detect and describe drug interactions in patient populations receiving drug combinations for the treatment of disease states. The mixed-effect modeling program, NONMEM, was used to measure the effects of the well-known digoxin-quinidine and digoxin-verapam...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章
doi:10.1097/00007691-199602000-00008
更新日期:1996-02-01 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
abstract::The plasma binding of phenytoin and the relationship between phenytoin concentrations in salivary and plasma ultrafiltrates were evaluated in pediatric epileptic patients aged 2-15 years. Paired samples of plasma and saliva were ultrafiltered through an Amicon YMT membrane. Phenytoin concentrations were measured by a ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198309000-00014
更新日期:1983-01-01 00:00:00
abstract:BACKGROUND:The combination of trimethoprim (TMP) and sulfamethoxazole (SMX) is used to treat a number of bacterial infections. TMP/SMX concentrations in serum are conventionally monitored using high-performance liquid chromatography (HPLC) or liquid chromatography tandem mass spectrometry. These methods require laborio...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000785
更新日期:2020-10-01 00:00:00
abstract::This study examined whether salivary nicotine concentrations would provide a useful index of plasma concentrations in studies of the effects of transdermal nicotine administration. Twenty-four subject smokers abstained from smoking for 12 h prior to admission to a clinical research unit ward and for 36 h while remaini...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199310000-00012
更新日期:1993-10-01 00:00:00
abstract::The study was designed to determine the steady-state pharmacokinetic profile of diazepam and desmethyldiazepam following a 15-mg controlled-release capsule dosed once daily at either 7 a.m. or 11 p.m. compared with the respective profiles of the conventional 5-mg tablet dosed three times a day at 7 a.m., 12 p.m., and ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198312000-00008
更新日期:1983-01-01 00:00:00
abstract::During once-daily dosing regimens of aminoglycosides, administration of large single doses results in high peak levels and low 24-h trough levels. However, commercial assays for monitoring aminoglycoside levels are designed to cover the smaller range of serum concentrations usually observed during multiple daily dosin...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/00007691-199504000-00005
更新日期:1995-04-01 00:00:00
abstract::An isocratic, high-performance liquid chromatography method has been developed for simultaneous determination of the tricyclic antidepressant clomipramine and six metabolites: desmethylclomipramine, 2- and 8-hydroxy-clomipramine, 2- and 8-hydroxydesmethylclomipramine and didesmethyl-clomipramine in plasma and urine. I...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199304000-00010
更新日期:1993-04-01 00:00:00
abstract:BACKGROUND:Tacrolimus pharmacokinetics in obese patients have been poorly studied. Herein, the authors explored the impact of obesity on tacrolimus exposure in kidney transplant recipients (KTRs) and estimated a more suitable initial dosage in this population. METHODS:A retrospective, observational, monocentric case-c...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000820
更新日期:2020-10-05 00:00:00
abstract::An isocratic high-performance liquid chromatography method with amperometric detection for the assay of plasma salbutamol is described. The plasma extract is injected into the chromatographic system via a loop column. This insures the purification of the injected extracts and allows a simple and rapid liquid-solid ext...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199206000-00011
更新日期:1992-06-01 00:00:00
abstract::Eight patients are described who displayed excessive concentrations of nortriptyline, imipramine, or clomipramine on routine blood level monitoring. Under these conditions, the patients did not respond to the treatment. All patients were markedly improved when the daily dosage of the antidepressant was reduced with a ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND:Several reports of loss of efficacy or adverse effects have been described after generic substitution of antipsychotics. To date, studies comparing serum drug levels in patients switched to generic antipsychotics in a standard clinical setting are lacking. The aim of this study was to investigate if switchin...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000211
更新日期:2015-12-01 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::Plasma concentrations of isepamicin, a new aminoglycoside antibiotic, were determined by radioimmunoassay (RIA), microbiological assay (MA), and high-performance liquid chromatography (HPLC) in healthy volunteers after administration of 7.5 mg/kg intramuscular dosages once daily for 10 days. Plasma samples were collec...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199712000-00012
更新日期:1997-12-01 00:00:00
abstract::The authors aimed to evaluate the utility of the history and clinical signs for predicting ingestion of poisons in children. A prospective cohort study was performed of all patients presenting with suspected poisoning to a pediatric emergency department over a 13-month period. Clinical data were collected on a preform...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200312000-00012
更新日期:2003-12-01 00:00:00