Optimized high-performance liquid chromatographic method for determination of lamotrigine in serum with concomitant determination of phenytoin, carbamazepine, and carbamazepine epoxide.

Abstract:

:Lamotrigine (LG), phenytoin (PY), carbamazepine (CM), and carbamazepine epoxide (CE) are measured with an optimized procedure that uses thin sorbent extraction disks and a highly selective, sterically protected bonded silica high-performance liquid chromatography (HPLC) column. Routinely, serum (200 microliters at pH 6.8 with cyheptamide as internal standard) is applied to an Empore octyl (C8) solid-phase extraction disk to isolate the drugs. a water wash removes interferences, and the retained drugs are eluted with a small volume of solvent. The eluate is directly injected onto a Zorbax Stable Bond cyanopropyl HPLC column with quantification at 214 nm. Evaporation-concentration steps are unnecessary. Overall, for all drugs, between-run precision coefficients of variation (n = 16 each) ranged from 2.1% to 4.9% at concentrations from 0.75 to 20.5 mg/l; extraction recoveries fell within a range of 96% to 110% at concentrations of 2, 10, and 30 mg/l tested for each drug; the lowest limit of detection was 0.15 to 0.35 mg/l. The analytical response was linear for each drug > 80 mg/l (LG) and > 50 mg/l (PY, CM, and CE). Optimization graphs are presented to illustrate the rationale for selection of test parameters for a robust method. In addition, a comparison study between two commercial laboratories demonstrates accuracy problems associated with LG testing.

journal_name

Ther Drug Monit

authors

Lensmeyer GL,Gidal BE,Wiebe DA

doi

10.1097/00007691-199706000-00009

subject

Has Abstract

pub_date

1997-06-01 00:00:00

pages

292-300

issue

3

eissn

0163-4356

issn

1536-3694

journal_volume

19

pub_type

杂志文章
  • Pharmacokinetic Characteristics and Limited Sampling Strategies for Therapeutic Drug Monitoring of Colistin in Patients With Multidrug-Resistant Gram-Negative Bacterial Infections.

    abstract:BACKGROUND:Colistin is increasingly used as the last therapeutic option for the treatment of multidrug-resistant, Gram-negative bacterial infections. To ensure safe and efficacious use of colistin, therapeutic drug monitoring (TDM) is needed due to its narrow therapeutic window. This study aimed to evaluate the pharmac...

    journal_title:Therapeutic drug monitoring

    pub_type: 临床试验,杂志文章

    doi:10.1097/FTD.0000000000000572

    authors: Kim EJ,Oh J,Lee K,Yu KS,Chung JY,Hwang JH,Nam EY,Kim HS,Kim M,Park JS,Song KH,Kim ES,Song J,Kim HB

    更新日期:2019-02-01 00:00:00

  • Therapeutic drug monitoring of beta-lactam antibiotics in burns patients--a one-year prospective study.

    abstract:BACKGROUND:Beta-lactams are first-line antibiotics for the management of superficial infections due to burn injury. There is sparse data available on therapeutic drug monitoring (TDM) in patients with burns in a ward setting. This study was conducted to evaluate the utility of a beta-lactam TDM program in a cohort of b...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e31824981a6

    authors: Patel BM,Paratz J,See NC,Muller MJ,Rudd M,Paterson D,Briscoe SE,Ungerer J,McWhinney BC,Lipman J,Roberts JA

    更新日期:2012-04-01 00:00:00

  • Therapeutic monitoring of rapamycin: a new immunosuppressive drug.

    abstract::Rapamycin (RAPA) is a new immunosuppressive drug with a potency similar to that of FK506 and up to a 100-fold greater than that of cyclosporine (CsA). RAPA has shown to be efficacious in the prolongation of allograft survival in a number of animal models. In early studies, RAPA was administered on a dose/weight basis,...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,评审

    doi:10.1097/00007691-199312000-00004

    authors: Yatscoff RW,LeGatt DF,Kneteman NM

    更新日期:1993-12-01 00:00:00

  • Antiretrovirals: simultaneous determination of five protease inhibitors and three nonnucleoside transcriptase inhibitors in human plasma by a rapid high-performance liquid chromatography--mass spectrometry assay.

    abstract::An analytical technique using liquid chromatography (LC) coupled with electrospray-mass spectrometry (ESI--MS) has been developed for the simultaneous determination of five protease inhibitors (PIs): saquinavir, indinavir, ritonavir, nelfinavir, and amprenavir; and three non-nucleoside reverse transcriptase inhibitors...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-200108000-00010

    authors: Villani P,Feroggio M,Gianelli L,Bartoli A,Montagna M,Maserati R,Regazzi MB

    更新日期:2001-08-01 00:00:00

  • Effect of associated antiepileptic treatment on valproate-induced hyperammonemia.

    abstract::It has recently been shown that acute changes of venous blood ammonia (NH3) may predict short-term adverse effects of valproic acid (VPA). In the present study, the time course of NH3 concentration after a single oral dose of VPA (800 mg) was monitored in 68 epileptic patients. Patients were classified into four group...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-198506000-00008

    authors: Zaccara G,Paganini M,Campostrini R,Moroni F,Valenza T,Messori A,Bartelli M,Arnetoli G,Zappoli R

    更新日期:1985-01-01 00:00:00

  • Synthetic Cathinones and Their Potential Interactions with Prescription Drugs.

    abstract:PURPOSE:Substance use disorder often coexists with other psychiatric disorders, resulting in the simultaneous use of recreational and prescription drugs. The authors aimed to identify potential pharmacokinetic and pharmacodynamic interactions between new psychoactive substances of the cathinone class and specific presc...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000682

    authors: Contrucci RR,Brunt TM,Inan F,Franssen EJF,Hondebrink L

    更新日期:2020-02-01 00:00:00

  • No influence of body weight on serum levels of antidepressants.

    abstract:BACKGROUND:Body weight may affect pharmacokinetic parameters in various ways and may therefore have a significant impact on the serum concentration of a drug at a given dose. Although patients with major depressive disorder frequently show an elevated body mass index, studies investigating the relation between body wei...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e318237b0fa

    authors: Unterecker S,Deckert J,Pfuhlmann B

    更新日期:2011-12-01 00:00:00

  • Overview of FTY720 clinical pharmacokinetics and pharmacology.

    abstract::Drug discovery programs are actively exploring for therapeutic agents targeting enzymes and receptors regulating sphingolipid metabolism and biologic functions. FTY720 is a close structural analogue of sphingosine with immunomodulatory properties. After oral administration, FTY720 is phosphorylated by sphingosine kina...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,评审

    doi:10.1097/00007691-200412000-00001

    authors: Kovarik JM,Schmouder RL,Slade AJ

    更新日期:2004-12-01 00:00:00

  • A Validated Method for Quantification of Dolutegravir Using Ultra Performance Liquid Chromatography Coupled With UV Detection.

    abstract:BACKGROUND:Dolutegravir (DTG) is an integrase strand transfer inhibitor, which is a newly approved antiretroviral drug used for the treatment of HIV-infected naive and experienced individuals. Many aspects of DTG pharmacology remain to be studied. Our aim was to develop and fully validate a robust analytical method for...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000286

    authors: Wang X,Penchala SD,Amara A,Else L,McClure M,Boffito M

    更新日期:2016-06-01 00:00:00

  • Posaconazole plasma concentrations in critically ill patients.

    abstract:BACKGROUND:Posaconazole is an azole antifungal agent with a broad spectrum of activity and a manageable side-effect profile. Although the pharmacokinetics of posaconazole have been described in healthy volunteers who received the drug by means of a nasogastric tube or with nutritional supplements, the pharmacokinetics ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,随机对照试验

    doi:10.1097/FTD.0b013e31821fb197

    authors: Ray J,Campbell L,Rudham S,Nguyen Q,Marriott D

    更新日期:2011-08-01 00:00:00

  • Reliable and Easy-To-Use Liquid Chromatography-Tandem Mass Spectrometry Method for Simultaneous Analysis of Fluconazole, Isavuconazole, Itraconazole, Hydroxy-Itraconazole, Posaconazole, and Voriconazole in Human Plasma and Serum.

    abstract:BACKGROUND:A fast and easy-to-use liquid chromatography-tandem mass spectrometry method for the determination and quantification of 6 triazoles [fluconazole (FLZ), isavuconazole (ISZ), itraconazole (ITZ), hydroxy-itraconazole (OH-ITZ), posaconazole (PSZ), and voriconazole (VRZ)] in human plasma and serum was developed ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000438

    authors: Müller C,Gehlen D,Blaich C,Prozeller D,Liss B,Streichert T,Wiesen MHJ

    更新日期:2017-10-01 00:00:00

  • Effect of plasma exchange on phenytoin plasma concentration.

    abstract::The effect of plasma exchange on the concentrations of total and unbound phenytoin (DPH) was determined in one normal subject and four patients undergoing therapeutic plasma exchange (PE). The average percentage of plasma exchanged ranged from 57 to 70% among the five patients studied. The reduction in DPH concentrati...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-198606000-00008

    authors: Silberstein LE,Shaw LM

    更新日期:1986-01-01 00:00:00

  • Radioimmunoassay for 7-hydroxy metabolite of fluphenazine and its application to plasma level monitoring in schizophrenic patients treated long term with oral and depot fluphenazine.

    abstract::Immunization of New Zealand white rabbits with a bovine serum albumin conjugate of 7-hydroxy-N-carboxyethyl-N-deshydroxyethylfluphenazine produced highly specific antisera for 7-hydroxyfluphenazine (7-OHFLU). A radioimmunoassay (RIA) was developed using antisera from one of the rabbits that enabled for the first time ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199402000-00003

    authors: Aravagiri M,Marder SR,Van Putten T,Hawes EM,McKay G,Midha KK

    更新日期:1994-02-01 00:00:00

  • Dasatinib, a multikinase inhibitor: therapy, safety, and appropriate management of adverse events.

    abstract::Tyrosine kinase inhibitors are the standard of care for the treatment of chronic myeloid leukemia or Philadelphia chromosome-positive acute lymphoblastic leukemia. Dasatinib is a second-generation tyrosine kinase inhibitor that has been shown to be efficacious in treatment of patients with chronic myeloid leukemia or ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,评审

    doi:10.1097/FTD.0b013e3181f4d9c5

    authors: Shayani S

    更新日期:2010-12-01 00:00:00

  • Effects of the CYP2D6*10 allele on the steady-state plasma concentrations of aripiprazole and its active metabolite, dehydroaripiprazole, in Japanese patients with schizophrenia.

    abstract::The CYP2D6*10(*10) allele that causes decreased CYP2D6 activity is present in Asians with a high frequency of approximately 50%. We studied the effects of the *10 allele on the steady-state plasma concentrations of aripiprazole and its active metabolite, dehydroaripiprazole. The subjects were 63 Japanese patients with...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e3182031021

    authors: Suzuki T,Mihara K,Nakamura A,Nagai G,Kagawa S,Nemoto K,Ohta I,Arakaki H,Uno T,Kondo T

    更新日期:2011-02-01 00:00:00

  • Sources of Variability and Accuracy of Performance Assessment in the Clinical Pharmacology Quality Assurance Proficiency Testing Program for Antiretrovirals.

    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

    authors: Browne RW,Rosenkranz SL,Wang Y,Taylor CR,DiFrancesco R,Morse GD

    更新日期:2019-08-01 00:00:00

  • Multicenter quality control study of amikacin assay for monitoring once-daily dosing regimens. International Antimicrobial Therapy Cooperative Group of the European Organization for Research and Treatment of Cancer.

    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

    authors: Blaser J,König C,Fatio R,Follath F,Cometta A,Glauser M

    更新日期:1995-04-01 00:00:00

  • Acute tolerance to pressor effects of cocaine in humans.

    abstract::We have suggested previously that acute tolerance to the chronotropic effect of cocaine develops and that tolerance is incomplete, such that the heart-rate decline in the presence of stable plasma cocaine concentrations approaches a plateau that exceeds the baseline heart rate. One possible mechanism for heart-rate de...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199312000-00015

    authors: Ambre JJ

    更新日期:1993-12-01 00:00:00

  • Associations between ABCB1, CYP2A6, CYP2B6, CYP2D6, and CYP3A5 alleles in relation to efavirenz and nevirapine pharmacokinetics in HIV-infected individuals.

    abstract:BACKGROUND:Human immunodeficiency virus (HIV)-infected individuals show large interindividual variation in response to antiretroviral therapy. Efavirenz (EFV) and nevirapine (NVP) are nonnucleoside reverse transcriptase inhibitors, which are prescribed in combination with other antiretroviral therapy in so-called highl...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e31824868f3

    authors: Heil SG,van der Ende ME,Schenk PW,van der Heiden I,Lindemans J,Burger D,van Schaik RH

    更新日期:2012-04-01 00:00:00

  • Efficiency and Safety of an Early Dose Adjustment of Ribavirin in Patients Infected With Hepatitis C Underexposed to the Drug and Treated With Peginterferon Ribavirin.

    abstract:BACKGROUND:Ribavirin exposure after the first dose (D0AUC0-4h) >1755 mcg·h·L is predictive of sustained virological response (SVR) in patients with hepatitis C treated with peginterferon and ribavirin. The aim of this study was to test the benefit of ribavirin early dose adjustment based on this target in naïve patient...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1097/FTD.0000000000000332

    authors: Loustaud-Ratti V,Maynard M,Thevenon S,Pradat P,Rousseau A,Alain S,Deny P,Gagnieu MC,Tran A,Dao T,Silvain C,Lunel-Fabiani F,Picard N,Zublena I,Marquet P,Trepo C,RIBAJUSTE Group.

    更新日期:2016-12-01 00:00:00

  • Validated LC-MS/MS Method for the Simultaneous Determination of Amlodipine and Its Major Metabolites in Human Plasma of Hypertensive Patients.

    abstract:BACKGROUND:No information on the pharmacokinetic characteristics of amlodipine (AML) metabolites is available. This study aimed to develop a method based on isocratic liquid chromatography coupled to tandem mass spectrometry for the simultaneous determination of AML and its 2 major metabolites, dehydroamlodipine (DH-AM...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000449

    authors: Taguchi R,Naito T,Sato H,Kawakami J

    更新日期:2017-12-01 00:00:00

  • Digitalis-like immunoreactive substances in maternal and umbilical cord plasma: a comparative sensitivity study of fluorescence polarization immunoassay and microparticle enzyme immunoassay.

    abstract::Digitalis-like immunoreactive substances (DLIS) obtained from maternal and umbilical cord plasma at delivery were measured by fluorescence polarization immunoassay (FPIA; TDX, Abbott) and microparticle enzyme immunoassay (MEIA; IMX, Abbott). In each sample, concentrations of dehydroepiandrosterone, dehydroepiandroster...

    journal_title:Therapeutic drug monitoring

    pub_type: 临床试验,杂志文章

    doi:10.1097/00007691-200304000-00015

    authors: Ijiri Y,Hayashi T,Kamegai H,Ohi K,Suzuki K,Kitaura Y,Takenaka H

    更新日期:2003-04-01 00:00:00

  • Monitoring phenytoin in salivary and plasma ultrafiltrates of pediatric patients.

    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

    authors: Bachmann K,Forney RB Jr,Voeller K

    更新日期:1983-01-01 00:00:00

  • Therapeutic Drug Monitoring for Perampanel in Japanese Epilepsy Patients: Influence of Concomitant Antiepileptic Drugs.

    abstract:BACKGROUND:Perampanel is a new antiepileptic drug (AED) that acts as a noncompetitive α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid (AMPA) receptor antagonist and is mainly metabolized by cytochrome P450 (CYP) 3A4. This study evaluated the influence of concomitant AEDs on the serum concentration profile of pera...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000416

    authors: Yamamoto Y,Usui N,Nishida T,Takahashi Y,Imai K,Kagawa Y,Inoue Y

    更新日期:2017-08-01 00:00:00

  • Population pharmacokinetics of intravenous, intramuscular, and intranasal naloxone in human volunteers.

    abstract::To investigate the pharmacokinetics of naloxone in healthy volunteers, we undertook an open-label crossover study in which six male volunteers received naloxone on five occasions: intravenous (0.8 mg), intramuscular (0.8 mg), intranasal (0.8 mg), intravenous (2 mg), and intranasal (2 mg). Samples were collected for 4 ...

    journal_title:Therapeutic drug monitoring

    pub_type: 临床试验,杂志文章

    doi:10.1097/FTD.0b013e3181816214

    authors: Dowling J,Isbister GK,Kirkpatrick CM,Naidoo D,Graudins A

    更新日期:2008-08-01 00:00:00

  • Measurement of Non-Vitamin K Antagonist Oral Anticoagulants in Patient Plasma Using Heptest-STAT Coagulation Method.

    abstract:BACKGROUND:Non-vitamin K antagonist oral anticoagulants (NOACs) are approved for several indications for prophylaxis of thromboembolism at fixed oral doses. The analysis of NOAC activity/concentration may be required in special patient populations. Heptest coagulation assay determines both factor Xa and thrombin inhibi...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000157

    authors: Du S,Harenberg J,Krämer S,Krämer R,Wehling M,Weiss C

    更新日期:2015-06-01 00:00:00

  • Pharmacokinetic studies of rifampicin in the elderly.

    abstract::The pharmacokinetics of rifampicin (RMP) and its principal active metabolite desacetylrifampicin (DA-RMP) were studied in six subjects, ranging in age from 78 to 95 years, after single oral doses of 10 mg/kg RMP. The maximal plasma concentrations (Cmax) and the elimination half-lives (t 1/2 beta) of RMP are 8.83 +/- 1...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-198303000-00004

    authors: Advenier C,Gobert C,Houin G,Bidet D,Richelet S,Tillement JP

    更新日期:1983-01-01 00:00:00

  • Saliva versus blood sampling for therapeutic drug monitoring in children: patient and parental preferences and an economic analysis.

    abstract::The objective of this study was to conduct an assessment of patient and parental preferences and an economic analysis of hospital costs in sampling blood and saliva for therapeutic drug monitoring (TDM). Costs and preferences were evaluated in the course of a study, which compared anticonvulsant concentrations in bloo...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199410000-00001

    authors: Gorodischer R,Burtin P,Hwang P,Levine M,Koren G

    更新日期:1994-10-01 00:00:00

  • Potential of Oral Fluid as a Clinical Specimen for Compliance Monitoring of Psychopharmacotherapy.

    abstract:BACKGROUND:Oral fluid (OF) is being developed as a specimen for the determination of drug intake as an alternative to serum and plasma. It is generally considered as an attractive specimen due to the noninvasive nature of the sampling procedure and the relation to the free fraction of drug in the blood. These features ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000493

    authors: Neumann J,Beck O,Dahmen N,Böttcher M

    更新日期:2018-04-01 00:00:00

  • Doping control from a global and national perspective.

    abstract::The practice of enhancing athletic performance through foreign substances was known from the earliest Olympic games. In 1967, the International Olympic Committee (IOC) established a Medical Commission responsible for developing a list of prohibited substances and methods. Drug tests were first introduced at the Olympi...

    journal_title:Therapeutic drug monitoring

    pub_type: 历史文章,杂志文章

    doi:10.1097/00007691-200404000-00015

    authors: Fraser AD

    更新日期:2004-04-01 00:00:00