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 gas-liquid chromatography procedure. The phenytoin free fraction among pediatric epilepsy patients not taking valproic acid was normally distributed with a mean (+/- SD) of 9.2 +/- 1.8%. The mean (+/- SD) free phenytoin fraction among patients also taking valproic acid was 13.2 +/- 4.5%. Salivary ultrafiltrates exhibited a close correspondence with plasma ultrafiltrate concentrations, and the ratio of salivary to plasma ultrafiltrate concentrations was 1.06 +/- 0.15. Substantial intraindividual variation in the phenytoin free fraction and the increase in free fraction among patients on valproic acid emphasize the importance of using plasma unbound levels for monitoring phenytoin. The close agreement between plasma and salivary ultrafiltrate concentrations suggests that the latter will provide a practical noninvasive means of monitoring phenytoin.

journal_name

Ther Drug Monit

authors

Bachmann K,Forney RB Jr,Voeller K

doi

10.1097/00007691-198309000-00014

subject

Has Abstract

pub_date

1983-01-01 00:00:00

pages

325-9

issue

3

eissn

0163-4356

issn

1536-3694

journal_volume

5

pub_type

杂志文章
  • Quantification of immunosuppression by flow cytometry in stable renal transplant recipients.

    abstract::The current standard of monitoring transplant patients by drug levels is not optimal because it does not take into account the different and individual effects of immunosuppressive drugs on each patient. In this study, the authors tested immune function assays for monitoring transplant patients. Blood was collected fr...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-200302000-00003

    authors: Stalder M,Bîrsan T,Holm B,Haririfar M,Scandling J,Morris RE

    更新日期:2003-02-01 00:00:00

  • Population Pharmacokinetic Analysis of Meropenem in Critically Ill Patients With Acute Kidney Injury Treated With Continuous Hemodiafiltration.

    abstract:BACKGROUND:The aim of this study was to conduct a population pharmacokinetic (PK) analysis of meropenem and to explore the optimal dosing strategy for meropenem in critically ill patients with acute kidney injury receiving treatment with continuous hemodiafiltration (CHDF). METHODS:Blood samples were obtained on days ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000741

    authors: Niibe Y,Suzuki T,Yamazaki S,Suzuki T,Takahashi N,Hattori N,Nakada TA,Oda S,Ishii I

    更新日期:2020-08-01 00:00:00

  • Overview of sotrastaurin clinical pharmacokinetics.

    abstract::Sotrastaurin (AEB071) is an investigational immunosuppressant that blocks T-lymphocyte activation through protein kinase C inhibition. It is currently in Phase II of clinical development for the prevention of acute rejection after solid organ transplantation. In renal transplant clinical trials, sotrastaurin has been ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,评审

    doi:10.1097/FTD.0b013e3181ee9e26

    authors: Kovarik JM,Slade A

    更新日期:2010-10-01 00:00:00

  • Valproic acid-phenytoin interaction.

    abstract::The interaction between valproic acid (VPA) and phenytoin (DPH) was examined during therapeutic monitoring in an epileptic outpatient population. Gas-liquid chromatographic methods were used to measure DPH and VPA concentrations. (1) In 12 patients on stable DPH regimens, the mean DPH level declined from 19.7 to 15.3 ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-197901020-00005

    authors: Friel PN,Leal KW,Wilensky AJ

    更新日期:1979-01-01 00:00:00

  • Mycophenolate mofetil--clinical and experimental experience.

    abstract::Mycophenolate mofetil (MMF) is the first drug approved for the prevention of renal allograft rejection in the United States in the last 10 years. MMF is the morpholinoethyl ester of mycophenolic acid (MPA) and is a selective, reversible inhibitor of inosine monophosphate dehydrogenase (IMPDH), an enzyme that is critic...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199608000-00007

    authors: Pirsch JD,Sollinger HW

    更新日期:1996-08-01 00:00:00

  • Therapeutic drug monitoring reduces toxic drug reactions: a meta-analysis.

    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

    authors: Ried LD,Horn JR,McKenna DA

    更新日期:1990-01-01 00:00:00

  • A simple method to calculate cyclosporine dosage to obtain a target C2 drug level.

    abstract::C(2) Cyclosporine (CsA) level, as a surrogate of area under the time-concentration curve (AUC) 0-4 hours, is a good predictor of drug absorption and clinical outcome after kidney transplantation. It has been difficult to define the optimal C(2) level in the individual case and given the broad range of C(2) due to inte...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-200306000-00022

    authors: Morales J,Buckel E,Fierro A,Zehnder C,Herzog C,Mañalich J

    更新日期:2003-06-01 00:00:00

  • Therapeutic Drug Monitoring Can Improve Linezolid Dosing Regimens in Current Clinical Practice: A Review of Linezolid Pharmacokinetics and Pharmacodynamics.

    abstract::Linezolid is an antibiotic used to treat infections caused by drug-resistant gram-positive organisms, including vancomycin-resistant Enterococcus faecium, multi-drug resistant Streptococcus pneumoniae, and methicillin-resistant Staphylococcus aureus. The adverse effects of linezolid can include thrombocytopenia and ne...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000710

    authors: Rao GG,Konicki R,Cattaneo D,Alffenaar JW,Marriott DJE,Neely M,IATDMCT Antimicrobial Scientific Committee.

    更新日期:2020-02-01 00:00:00

  • Effects of smoking on nortriptyline plasma concentrations in depressed patients.

    abstract::The pharmacokinetic parameters of half-life, volume of distribution, and steady-state nortriptyline plasma concentration normalized to a 100-mg/day maintenance dose were calculated in nine smokers and 15 nonsmokers. The mean normalized total nortriptyline concentration for the smokers of 118 +/- 33 ng/ml was significa...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-198609000-00007

    authors: Perry PJ,Browne JL,Prince RA,Alexander B,Tsuang MT

    更新日期:1986-01-01 00:00:00

  • Azathioprine Therapy in a Pediatric TPMT-Deficient Patient-Still an Option.

    abstract::We describe the case of a pediatric patient on azathioprine therapy with previously undiagnosed homozygote thiopurine S-methyltransferase (TPMT) deficiency, resulting in myelotoxic thiopurine metabolite levels. The patient was successfully treated with a very low azathioprine dose of 50 mg once a week (4% of standard ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000366

    authors: van Moorsel SA,Bevers N,Meurs M,van Rossum LK,Hooymans PM,Wong DR

    更新日期:2017-02-01 00:00:00

  • Pharmacokinetics of cocaine and metabolites in human oral fluid and correlation with plasma concentrations after controlled administration.

    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

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e3181f2b729

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

    更新日期:2010-10-01 00:00:00

  • Risperidone and Venlafaxine Metabolic Ratios Strongly Predict a CYP2D6 Poor Metabolizing Genotype.

    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

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000251

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

    更新日期:2016-02-01 00:00:00

  • Pharmacokinetics of 5-fluorouracil after short systemic infusion: plasma level at the end of the distribution phase as an indicator of the total area under the plasma concentration-time curve.

    abstract::The correlation between single plasma concentration (CP) values of 5-fluorouracil (FU) after a 10-minute i.v. infusion and the total area under the plasma concentration-time curve (AUC) has been studied in 26 cancer patients. FU dose was either 320-550 mg/m2 (seven patients, 13 treatments) or 610-960 mg/m2 (19 patient...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:

    authors: Port RE,Edler L,Herrmann R,Feldmann U

    更新日期:1991-03-01 00:00:00

  • Dosage adjustment of high-dose methotrexate using Bayesian estimation: a comparative study of two different concentrations at the end of 8-h infusions.

    abstract::Bayesian estimation (BE) of pharmacokinetic parameters enables the clinician to adjust the dosage of high-dose methotrexate (HDMTX) to correct the inter- and intraindividual variation of concentrations that are responsible for severe toxicity. In this study of 672 HDMTX infusions, we validated an approach that consist...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199510000-00007

    authors: Pignon T,Lacarelle B,Duffaud F,Guillet P,Catalin J,Durand A,Favre R

    更新日期:1995-10-01 00:00:00

  • Diffusion characteristics of placental preparations affect the digoxin passage across the isolated placental lobule.

    abstract::Our aim was to evaluate the isolated placental lobule to study maternofetal transplacental digoxin transfer and accumulation in placental tissue in vitro. Digoxin passage across the isolated lobule of 10 human placentas was calculated from repeated fetal and maternal perfusate samples, and placental tissue digoxin con...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199702000-00002

    authors: Schmolling J,Jung S,Reinsberg J,Schlebusch H

    更新日期:1997-02-01 00:00:00

  • Screening procedure for detection of diuretics and uricosurics and/or their metabolites in human urine using gas chromatography-mass spectrometry after extractive methylation.

    abstract::A gas chromatography-mass spectrometry (GC-MS)-based screening procedure was developed for the detection of diuretics, uricosurics, and/or their metabolites in human urine after extractive methylation. Phase-transfer catalyst remaining in the organic phase was removed by solid-phase extraction on a diol phase. The com...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/01.ftd.0000160719.96445.91

    authors: Beyer J,Bierl A,Peters FT,Maurer HH

    更新日期:2005-08-01 00:00:00

  • Evaluation of Infliximab and Anti-infliximab LISA-TRACKER Immunoassays for the Therapeutic Drug Monitoring of SB2 Infliximab Biosimilar.

    abstract:BACKGROUND:SB2, an infliximab (IFX) biosimilar to the reference infliximab (R.I.) product (Remicade), received approval in the European Union for all IFX indications. Many decision algorithms based on the measurement of IFX trough levels and antibodies to infliximab are being increasingly used to optimize IFX treatment...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000565

    authors: Jentzer A,Berger AE,Labetoulle R,Haccourt A,Roblin X,Paul S

    更新日期:2018-12-01 00:00:00

  • Concentrations of stiripentol in children and adults with epilepsy: the influence of dose, age, and comedication.

    abstract:BACKGROUND:Stiripentol (STP) was approved as an orphan drug in 2007 in Europe as adjunctive therapy with valproic acid (VPA) and clobazam (CLB) for Dravet syndrome. Dravet syndrome is a highly pharmacoresistant form of epilepsy, which starts in early childhood. Data about STP pharmacokinetics and interactions are still...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e31825dc4a6

    authors: May TW,Boor R,Mayer T,Jürgens U,Rambeck B,Holert N,Korn-Merker E,Brandt C

    更新日期:2012-08-01 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

  • Experience with cost-effective in-house reagents for the assay of carbamazepine in serum, using the Abbott TDx.

    abstract::The development of inexpensive in-house reagents for the assay of carbamazepine in serum, using a commercially available derivative and antiserum is described. They were adapted for use on the Abbott TDx as direct replacements for commercial reagents. Comparison with a high-performance liquid chromatography method is ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199306000-00006

    authors: Colbert DL,Turner GJ

    更新日期:1993-06-01 00:00:00

  • Immunoassays for Measuring Serum Concentrations of Monoclonal Antibodies and Anti-biopharmaceutical Antibodies in Patients.

    abstract::Monoclonal antibodies (mAbs) may be used as biopharmaceuticals to treat various diseases, ranging from oncology to inflammatory and cardiovascular affections. Trustworthy analytical methods are necessary to study their pharmacokinetics, both during their development and in post-marketing studies. Because biopharmaceut...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章,评审

    doi:10.1097/FTD.0000000000000419

    authors: Darrouzain F,Bian S,Desvignes C,Bris C,Watier H,Paintaud G,de Vries A

    更新日期:2017-08-01 00:00:00

  • Spironolactone as a source of interference in commercial digoxin immunoassays.

    abstract::Eight commercial digoxin immunoassay methods were tested in 17 subjects taking spironolactone (but not digoxin) to evaluate cross-reactivity from parent drug and/or metabolites. Four of these methods showed significant (up to 1.9 nmol/L) and variable "apparent digoxin" concentrations, despite the absence of digoxin in...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-198706000-00014

    authors: Morris RG,Lagnado PY,Lehmann DR,Frewin DB,Glistak ML,Burnet RB

    更新日期:1987-06-01 00:00:00

  • Validation of a Capillary Dry Blood Sample MITRA-Based Assay for the Quantitative Determination of Systemic Tacrolimus Concentrations in Transplant Recipients.

    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

    authors: Undre N,Dawson I,Aluvihare V,Kamar N,Saliba F,Torpey N,Anaokar S,Kazeem G,Hussain I

    更新日期:2020-12-03 00:00:00

  • Status epilepticus associated with the combination of valproic acid and clomipramine.

    abstract::An epileptic patient well controlled on valproic acid (VPA) developed a prolonged episode of status epilepticus 12 days after initiation of 75 mg of clomipramine (CMI) to treat depression. Serum level of VPA in the emergency room was unchanged from her previous levels; serum level of CMI was very elevated despite the ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199702000-00012

    authors: DeToledo JC,Haddad H,Ramsay RE

    更新日期:1997-02-01 00:00:00

  • Placental and milk transfer of chloroquine in humans.

    abstract::The placental and milk transfer of chloroquine was studied in seven subjects and six subjects, respectively. Seven pregnant women at term were administered chloroquine phosphate (5 mg/kg) i.m. The maternal blood and arterial and venous umbilical cord blood were obtained during delivery. The maternal chloroquine blood ...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-198802000-00004

    authors: Akintonwa A,Gbajumo SA,Mabadeje AF

    更新日期:1988-01-01 00:00:00

  • Determination of opioid analgesics in hair samples using liquid chromatography/tandem mass spectrometry and application to patients under palliative care.

    abstract::Hair testing procedures allow a cumulative reflection of long-term drug abuse and are useful as a test for compliance in clinical toxicology. In the present study, liquid chromatography coupled with tandem mass spectrometry was used to determine analgesic opioid drugs in hair samples. The procedure used a simple metha...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0b013e318155a329

    authors: Musshoff F,Lachenmeier K,Trafkowski J,Madea B,Nauck F,Stamer U

    更新日期:2007-10-01 00:00:00

  • Opioid receptor A118G polymorphism does not affect the consumption of sufentanil and ropivacaine by patient-controlled epidural analgesia after cesarean section.

    abstract:BACKGROUND:Previous reports have suggested that polymorphism of the opioid receptor A118G affects the efficacy of opioid analgesia. The aim of this study was to investigate whether such polymorphism contributed to variability in epidural mixture (sufentanil plus ropivacaine) requirements through patient-controlled epid...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/FTD.0000000000000112

    authors: Xu GH,Gao M,Sheng QY,Liu XS,Gu EW

    更新日期:2015-02-01 00:00:00

  • Teicoplanin measurement in patients with renal failure: comparison of fluorescence polarization immunoassay, microbiological assay, and high-performance liquid chromatographic assay.

    abstract::Characterization of antibiotic pharmacokinetics in patients with renal insufficiency may be complicated by interfering substances within the assay. We compared three different assays for teicoplanin in serum and dialysate of 10 hemodialysis and six continuous ambulatory peritoneal dialysis (CAPD) patients. The microbi...

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:

    authors: Awni WM,St Peter WL,Guay DR,Kenny MT,Matzke GR

    更新日期:1991-11-01 00:00:00

  • Protein binding of antiepileptic drugs during pregnancy, labor, and puerperium.

    abstract::Twenty-four epileptic women were followed-up during late pregnancy, labor, and early puerperium in order to detect possible alterations in serum protein binding of antiepileptic drugs (AEDs). The total and free concentrations of carbamazepine (CBZ), phenytoin (PHT), and valproate (VPA) in maternal serum were measured....

    journal_title:Therapeutic drug monitoring

    pub_type: 杂志文章

    doi:10.1097/00007691-199001000-00008

    authors: Bardy AH,Hiilesmaa VK,Teramo K,Neuvonen PJ

    更新日期:1990-01-01 00:00:00

  • Determinants of mycophenolic acid levels after renal transplantation.

    abstract::There are data suggesting an association between mycophenolic acid (MPA) levels and acute rejection and toxicity in renal transplant recipients treated with mycophenolate mofetil (MMF), and therefore, knowledge of factors determining MPA levels may aid in accurate adjustment of MMF dosage. A total of 4970 samples take...

    journal_title:Therapeutic drug monitoring

    pub_type: 临床试验,杂志文章

    doi:10.1097/01.ftd.0000167885.17280.6f

    authors: Borrows R,Chusney G,James A,Stichbury J,Van Tromp J,Cairns T,Griffith M,Hakim N,McLean A,Palmer A,Papalois V,Taube D

    更新日期:2005-08-01 00:00:00