Assessment of drug concentrations in tears in therapeutic drug monitoring: I. Determination of valproic acid in tears by gas chromatography/mass spectrometry with EC/NCI mode.

abstract：BACKGROUND:Chronic opioid use and polypharmacy are commonly seen in chronic pain patients presenting for spine procedures. Substance abuse and misuse have also been reported in this patient population. Negative perioperative effects have been found in patients exposed to chronic opioid, alcohol, and recreational substa...

journal_title：Therapeutic drug monitoring

authors： Clavijo CF,Oliva AM,Dingmann C,Kaizer A,Christians U,Burger E,Patel V,Kleck CJ,Vogel SA,Scott BK,Janik DJ,Jameson LC,Ginde AA

更新日期：2021-02-01 00:00:00

abstract：:A method for the quantitative determination of the tricyclic antidepressant drug amitriptyline (AT) and its active major metabolite, nortriptyline (NT), in plasma is described. The method involves a three-step extraction procedure, no derivatization, and a rapid run on a gas--liquid chromatograph equipped with a nitro...

journal_title：Therapeutic drug monitoring

authors： Hals PA,Lundgren TI,Aarbakke J

更新日期：1982-01-01 00:00:00

abstract：:Plasma levels of haloperidol were monitored in children and teenagers suffering from psychotic episodes and/or abnormal movements (tics and Gilles de la Tourette's syndrome). Steady-state concentrations of haloperidol ranged from 0.7 to 19 ng/ml without any apparent relationship with the administered dose (15--285 mic...

journal_title：Therapeutic drug monitoring

authors： Morselli PL,Bianchetti G,Durand G,Le Heuzey MF,Zarifian E,Dugas M

更新日期：1979-01-01 00:00:00

abstract：BACKGROUND:Tacrolimus (TAC) has a narrow therapeutic index and high interindividual and intraindividual pharmacokinetic variability, necessitating therapeutic drug monitoring to individualize dosage. Recent evidence suggests that intragraft TAC concentrations may better predict transplant outcomes. This study aimed to ...

journal_title：Therapeutic drug monitoring

authors： Noll BD,Coller JK,Somogyi AA,Morris RG,Russ GR,Hesselink DA,Van Gelder T,Sallustio BC

更新日期：2013-10-01 00:00:00

abstract：:Mycophenolate mofetil, the oral prodrug of mycophenolic acid, is indicated as immunosuppressive therapy after renal transplantation. To aid in the investigation of pharmacokinetic-pharmacodynamic relationships of mycophenolic acid in the clinical setting, limited blood sampling strategies have been proposed, and model...

journal_title：Therapeutic drug monitoring

authors： Willis C,Taylor PJ,Salm P,Tett SE,Pillans PI

更新日期：2000-10-01 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

authors： Lionetto L,Casolla B,Cavallari M,Tisei P,Buttinelli C,Simmaco M

更新日期：2012-02-01 00:00:00

abstract：:Pentobarbital serum concentrations associated with a high-dose therapeutic regimen were determined using EMIT immunoassay reagents. Replicate analyses of serum controls resulted in a within-assay coefficient of variation of 5.0% and a between-assay coefficient of variation of 10%. Regression analysis of 44 serum sampl...

journal_title：Therapeutic drug monitoring

authors： Pape BE,Cary PL,Clay LC,Godolphin W

更新日期：1983-01-01 00:00:00

abstract：:A computer-based approach for estimating pharmacokinetic data and predicting plasma drug concentrations based on two measurements of plasma drug concentrations was compared with a standard two-point method for estimating aminoglycoside (AG) pharmacokinetic parameters. The computer-based technique was also used to pred...

journal_title：Therapeutic drug monitoring

authors： Bachmann K,Pongsin V,Forney R Jr,Gronau G

更新日期：1985-01-01 00:00:00

abstract：:Six groups of six male Wistar rats were administered methadone in their drinking water over the concentration range 0-0.25 mg/ml. Hair and trunk blood samples were collected after a 6-week period of drug administration. Immunoreactive methadone was measured by radioimmunoassay and methadone and its major metabolite, 2...

journal_title：Therapeutic drug monitoring

authors： Green SJ,Wilson JF

更新日期：1996-12-01 00:00:00

abstract：PURPOSE:To investigate the predictive value of the risperidone and venlafaxine metabolic ratios and CYP2D6 genotype. METHODS:The determination of risperidone, 9-hydroxyrisperidone, and venlafaxine, O-desmethylvenlafaxine, N-desmethylvenlafaxine and CYP2D6 genotype was performed in 425 and 491 patients, respectively. T...

journal_title：Therapeutic drug monitoring

authors： Mannheimer B,Haslemo T,Lindh JD,Eliasson E,Molden E

更新日期：2016-02-01 00:00:00

abstract：:It has been suggested that lamotrigine (LTG) may enhance the toxicity of carbamazepine (CBZ) by increasing the concentration of the active metabolite carbamazepine-10,11-epoxide (CBZ-E) in adult patients. The authors investigated this hypothesis in an add-on study in 11 children and 3 adolescents, aged 6-22 years, who...

journal_title：Therapeutic drug monitoring

authors： Eriksson AS,Boreus LO

更新日期：1997-10-01 00:00:00

abstract：BACKGROUND:In children with cystic fibrosis (CF), the currently recommended amikacin dose ranges between 30-35 mg/kg/day; however, data supporting this dosing efficacy is lacking. Herein, the objectives were to develop a non-parametric pharmacokinetic population model (POPPK) for amikacin in children with CF and invest...

journal_title：Therapeutic drug monitoring

authors： Woillard JB,Bouchet S,Fayon M,Marquet P,Monchaud C,Bui S

更新日期：2020-12-17 00:00:00

abstract：:Phenytoin binding to serum proteins and factors influencing protein binding were investigated in 38 critically ill trauma patients. In 24% of these patients, the free fraction of phenytoin was < or = 10%, whereas in 76%, the free phenytoin fraction was increased > 10%--up to 24%. Nonantiepileptic comedication, sex, or...

journal_title：Therapeutic drug monitoring

authors： Zielmann S,Mielck F,Kahl R,Kazmaier S,Sydow M,Kolk J,Burchardi H

更新日期：1994-04-01 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

authors： Avendaño C,Alvarez JS,Sacristan JA,Adin J,Alsar MJ

更新日期：1991-11-01 00:00:00

abstract：:In a prospective study over 6 months, the relationship between serum lipid parameters and CsA whole blood trough concentrations was investigated in 39 renal transplant recipients receiving a triple immunosuppressive therapy with cyclosporin (CsA), azathioprine and prednisone. CsA trough concentrations were measured wi...

journal_title：Therapeutic drug monitoring

authors： von Ahsen N,Helmhold M,Schütz E,Eisenhauer T,Armstrong VW,Oellerich M

更新日期：1997-04-01 00:00:00

abstract：:The analysis of pemoline (2-imino-5-phenyl-4-oxazolidine) by a rapid, sensitive, and specific high performance liquid chromatographic assay using ultraviolet detection is described. Only 100 microliters of plasma or serum is required. Analytical recoveries of 88% for pemoline and 93% for the internal standard (4-methy...

journal_title：Therapeutic drug monitoring

authors： Tomkins CP,Soldin SJ,MacLeod SM,Rochefort JG,Swanson JM

更新日期：1980-01-01 00:00:00

abstract：:A simple and sensitive column-switching high-performance liquid chromatographic method for the simultaneous determination of itraconazole (ITZ) and its active metabolite, hydroxyitraconazole (HIT) in human plasma is described. ITZ, HIT, and an internal standard, R051012, were extracted from 1 mL of alkalinized plasma ...

journal_title：Therapeutic drug monitoring

authors： Uno T,Shimizu M,Sugawara K,Tateishi T

更新日期：2006-08-01 00:00:00

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

authors： Ambre JJ

更新日期：1993-12-01 00:00:00

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

authors： Lopez LM,Sen A,Robinson JD,Curry RW Jr

更新日期：1987-12-01 00:00:00

abstract：BACKGROUND:Hydroxychloroquine (HCQ) is an effective treatment for patients with cutaneous lupus erythematosus (CLE) or systemic lupus erythematosus (SLE) and has been used for these patients in more than 70 nations. However, in Japan, HCQ has not been approved for CLE or SLE. To establish an appropriate therapeutic reg...

journal_title：Therapeutic drug monitoring

authors： Morita S,Takahashi T,Yoshida Y,Yokota N

更新日期：2016-04-01 00:00:00

abstract：:Digoxin and gentamicin are widely used in pediatric medicine, and therapeutic monitoring is mandatory because of their narrow margin of safety and wide interpatient and intrapatient pharmacokinetic variabilities. Saliva sampling may be of potential interest, especially in children, in whom blood sampling is often diff...

journal_title：Therapeutic drug monitoring

authors： Berkovitch M,Bistritzer T,Aladjem M,Burtin P,Dagan T,Chen-Levi Z,Freedom R,Koren G

更新日期：1998-06-01 00:00:00

abstract：:Phenytoin is an effective anticonvulsant, but high serum phenytoin concentrations may be associated with serious toxicity. The upper limit for the therapeutic serum concentration of phenytoin is considered to be 80 micromol/L. However, in some situations higher serum concentrations are needed to control seizures. The ...

journal_title：Therapeutic drug monitoring

authors： Kozer E,Parvez S,Minassian BA,Kobayashi J,Verjee Z,Koren G

更新日期：2002-06-01 00:00:00

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

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

更新日期：1983-01-01 00:00:00

abstract：:A reverse-phase high-performance liquid chromatographic (HPLC) method for the measurement of lamotrigine (LTG) simultaneously with phenobarbitone (PB), phenytoin (PHT), and carbamazepine (CBZ) is described using hexobarbital as the internal standard. The method uses the chromophore at 307 nm to detect LTG in the prese...

journal_title：Therapeutic drug monitoring

authors： Ramachandran S,Underhill S,Jones SR

更新日期：1994-02-01 00:00:00

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

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

abstract：UNLABELLED:Oral fluid is an attractive alternative matrix for drug testing with a noninvasive and directly observed collection, but there are few controlled cocaine administration studies to guide interpretation. MATERIALS AND METHODS:While residing on a closed research unit for up to 10 weeks under constant medical s...

journal_title：Therapeutic drug monitoring

authors： Scheidweiler KB,Spargo EA,Kelly TL,Cone EJ,Barnes AJ,Huestis MA

更新日期：2010-10-01 00:00:00

abstract：OBJECTIVE:The aim of the study is to characterize the pharmacokinetics and the gastrointestinal side effect profiles of enteric-coated mycophenolate sodium (EC-MPS) in de novo kidney transplant patients of Hispanic ethnicity. MATERIALS AND METHODS:The pharmacokinetic study of EC-MPS was conducted in 11 de novo kidney ...

journal_title：Therapeutic drug monitoring

authors： Shah T,Tellez-Corrales E,Yang JW,Qazi Y,Wang J,Wilson J,Hutchinson I,Min DI

更新日期：2011-02-01 00:00:00

abstract：:A comparative bioavailability study of carbamazepine (CBZ) in tablets and a syrup preparation was carried out in six volunteers, using a crossover design. Plasma and saliva samples were collected at appropriate times, and the plasma specimens were analyzed by high performance liquid chromatography for concentrations o...

journal_title：Therapeutic drug monitoring

authors： Hooper WD,King AR,Patterson M,Dickinson RG,Eadie MJ

更新日期：1985-01-01 00:00:00

abstract：:Theophylline clearance was estimated by a single-sample technique in 19 subjects with acute clinical respiratory infections. Mean (+/- SD) theophylline clearance during acute illness was 0.044 +/- 0.011 L X h-1 X kg-1 compared to 0.043 +/- 0.012 L X h-1 X kg-1 1 month later. In a subset of five subjects, single-sample...

journal_title：Therapeutic drug monitoring

authors： Bachmann K,Schwartz J,Martin M,Jauregui L

更新日期：1987-09-01 00:00:00

abstract：BACKGROUND:Buprenorphine is currently under investigation as a pharmacotherapy to treat pregnant women for opioid dependence. This research evaluates buprenorphine (BUP), norbuprenophine (NBUP), buprenorphine-glucuronide (BUP-Gluc), and norbuprenorphine-glucuronide (NBUP-Gluc) pharmacokinetics after high-dose (14-20 mg...

journal_title：Therapeutic drug monitoring

authors： Concheiro M,Jones HE,Johnson RE,Choo R,Huestis MA

更新日期：2011-10-01 00:00:00