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PubMed Journals Articles About "Therapeutic Drug Monitoring And Pharmacogenomics Study Of Methadone Therapy" RSS

22:20 EST 14th December 2018 | BioPortfolio

Therapeutic Drug Monitoring And Pharmacogenomics Study Of Methadone Therapy PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Therapeutic Drug Monitoring And Pharmacogenomics Study Of Methadone Therapy articles that have been published worldwide.

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Showing "Therapeutic Drug Monitoring Pharmacogenomics Study Methadone Therapy" PubMed Articles 1–25 of 79,000+

Large-Scale Variability of Inpatient Tacrolimus Therapeutic Drug Monitoring at an Academic Transplant Center: a Retrospective Study.

Inpatient tacrolimus therapeutic drug monitoring (TDM) lacks standardized guidelines. In this study, the authors analyzed variability in the pre-analytical phase of the inpatient tacrolimus TDM process at their institution.


An Improved LC-ESI-MS/MS Method to Quantify Pregabalin in Human Plasma and Dry Plasma Spot for Therapeutic Monitoring and Pharmacokinetic Applications.

Therapeutic drug monitoring (TDM) of anti-epileptic drugs provides a valid clinical tool in optimization of overall therapy. However, TDM is challenging due to the high biological samples (plasma/blood) storage/shipment costs and the limited availability of laboratories providing TDM services. Sampling in the form of dry plasma spot (DPS) or dry blood spot (DBS) is a suitable alternative to overcome these issues.

No Pharmacokinetic Interactions Between Elbasvir or Grazoprevir and Methadone in Participants Receiving Maintenance Opioid Agonist Therapy.

We conducted two phase I trials to evaluate the pharmacokinetic interactions between elbasvir (EBR), grazoprevir (GZR), and methadone (MK-8742-P010 and MK-5172-P030) in non-hepatitis C virus (HCV)-infected participants on methadone maintenance therapy. Coadministration of EBR or GZR with methadone had no clinically meaningful effect on EBR, GZR, or methadone pharmacokinetics. The geometric mean ratios (GMRs) for R- and S-methadone AUC were 1.03 (90% confidence interval (CI), 0.92-1.15) and 1.09 (90% CI, 0.9...


An LC-MS/MS method for absolute quantification of nivolumab in human plasma: application to clinical therapeutic drug monitoring.

Nivolumab is a fully humanized IgG4 monoclonal antibody that targets the programmed death-1 (PD-1) receptor, disrupting PD-1-mediated signaling and restoring antitumor immunity. The objective of this study was to develop a nivolumab quantification method using liquid chromatography-tandem mass spectrometry (LC-MS/MS) and to evaluate its application in clinical therapeutic drug monitoring.

Drug-induced hyperglycaemia and diabetes: pharmacogenomics perspectives.

Drug-induced diabetes is widely reported in clinical conditions, and it is becoming a global issue because of its potential to increase the risk of severe cardiovascular complications. However, which drug mechanisms exert their diabetogenic effects and why the effects present significant inter-individual differences remain largely unknown. Pharmacogenomics, which is the study of how genomic variation influences drug responses, provides an explanation for individual differences in drug-induced diabetes. We h...

Methadone Metabolism And Drug-Drug Interactions: In Vitro And In Vivo Literature Review.

Methadone is utilized for the treatment of individuals with opiate dependence. Methadone undergoes N-demethylation by multiple cytochrome P450 (CYP) enzymes including CYP3A4, CYP2B6, CYP2C19, CYP2D6, CYP2C9 and CYP2C8. In vivo, polymorphism effects on methadone systemic exposure have been noted for CYP2B6, CYP3A4 and CYP2D6. Clinical drug interaction studies with antiviral drugs in methadone maintenance treatment patients yield varying results on methadone pharmacokinetics and pharmacodynamics. In general, ...

Therapeutic Drug Monitoring of endoxifen as an alternative for CYP2D6 genotyping in individualizing tamoxifen therapy.

Different strategies have been proposed to individualize tamoxifen treatment in order to improve recurrence-free survival in estrogen receptor (ER)-positive breast cancer. To date, the debate remains on which strategy should be used. The objective of this viewpoint is to highlight Therapeutic Drug Monitoring of endoxifen, the active tamoxifen metabolite, as the preferred methodology compared to CYP2D6 genotyping for individualizing tamoxifen therapy for ER-positive breast cancer patients treated in the adju...

Long-term monitoring of drug consumption patterns in a large-sized European city using wastewater-based epidemiology: Comparison of two sampling schemes for the assessment of multiannual trends.

A comprehensive study aimed at monitoring of temporal variability of illicit drugs (heroin, cocaine, amphetamine, MDMA, methamphetamine and cannabis) and therapeutic opiate methadone in a large-sized European city using wastewater-based epidemiology (WBE) was conducted in the city of Zagreb, Croatia, during an 8-year period (2009-2016). The study addressed the impact of different sampling schemes on the assessment of temporal drug consumption patterns, in particular multiannual consumption trends and docume...

Serum and Saliva Concentrations of Venlafaxine, O-Desmethylvenlafaxine, Quetiapine, and Citalopram in Psychiatric Patients.

Therapeutic drug monitoring has become increasingly important in psychiatric therapy. However, it is not yet implemented as a daily routine in clinical settings. To evaluate new, noninvasive procedures, we compared blood and saliva venlafaxine, quetiapine, and citalopram concentrations in samples collected from psychiatric patients.

A Clinically Relevant Effect of UGT1A4*3 on Lamotrigine Serum Concentration is Restricted to Postmenopausal Females - a Study Matching Therapeutic Drug Monitoring and Genotype Data from 534 Patients.

Previous studies have reported inconsistent findings regarding the impact of the UGT1A4*3 variant allele on lamotrigine (LTG) exposure. As no studies have controlled for non-genetic factors, the aim of this study was to compare serum concentrations of LTG in carriers vs. non-carriers of UGT1A4*3 adjusting for differences in age, sex and valproic acid (VPA) comedication.

Therapeutic drug monitoring in neuropsychopharmacology : Summary of the consensus guidelines 2017 of the TDM task force of the AGNP.

Therapeutic drug monitoring (TDM) is the quantification and interpretation of drug concentrations in blood serum or plasma to optimize pharmacological therapy. TDM is an instrument with which the high interindividual variability of pharmacokinetics of patients can be identified and therefore enables a personalized pharmacotherapy. In September 2017 the TDM task force of the Working Group for Neuropsychopharmacology and Pharmacopsychiatry (AGNP) published an update of the consensus guidelines on TDM publish...

Viral suppression among HIV-infected methadone-maintained patients: The role of ongoing injection drug use and adherence to antiretroviral therapy (ART).

Methadone maintenance therapy (MMT) is associated with improved virologic outcomes, yet no studies have explored factors associated with viral suppression in HIV-infected patients on MMT. Given the critical role of sustained viral suppression in maximizing benefits of antiretroviral therapy (ART), we sought to assess factors associated with viral suppression in patients stabilized on MMT.

Mass Spectrometry for Research and Application in Therapeutic Drug Monitoring or Clinical and Forensic Toxicology.

This paper reviews current applications of various hyphenated low- and high-resolution mass spectrometry techniques in the field of therapeutic drug monitoring and clinical/forensic toxicology in both research and practice. They cover gas chromatography, liquid chromatography, matrix-assisted laser desorption ionization, or paper spray ionization coupled to quadrupole, ion trap, time-of-flight, or Orbitrap mass analyzers.

Therapeutic drug monitoring to assess drug adherence in assumed resistant hypertension: a comparison with directly observed therapy in three non-adherent patients.

Resistant hypertension (RH) is a common health problem leading to suboptimal cardiovascular prevention. A large number of patients with RH have poor medication adherence explaining their assumed resistance to therapy. We combined directly observed therapy (DOT) with therapeutic drug monitoring (TDM) in three patients at several time points to enable an extensive feedback on blood pressure (BP) and drug levels. BP was measured with an automatic oscillatory device at regular intervals of 5 minutes (directly b...

Therapeutic Drug Monitoring of Antiepileptic Drugs in Epilepsy: A 2018 Update.

Antiepileptic drugs (AEDs) are the mainstay of epilepsy treatment. Since 1989, 18 new AEDs have been licensed for clinical use and there are now 27 licensed AEDs in total for the treatment of patients with epilepsy. Furthermore, several AEDs are also used for the management of other medical conditions, e.g., pain and bipolar disorder. This has led to an increasingly widespread application of therapeutic drug monitoring (TDM) of AEDs, making AEDs among the most common medications for which TDM is performed. ...

A Longitudinal Study of Tacrolimus in Lymphocytes during the First Year after Kidney Transplantation.

Tacrolimus (TAC) is an immunosuppressive drug used after organ transplantation. Dosing is adjusted using whole blood (TAC-WB) measurements. Patients within the therapeutic WB-TAC window still experience rejections and adverse effects. Alternative monitoring methods are therefore warranted. The authors developed a method for measuring TAC in peripheral blood mononuclear cells (PBMC)-isolates (PBMC-TAC) and performed a pharmacokinetic study in a cohort of kidney transplant patients during the first year after...

Replication of the pharmacogenetic effect of rs678849 on buprenorphine efficacy in African-Americans with opioid use disorder.

Many patients with opioid use disorder do not have successful outcomes during treatment but the underlying reasons are not well understood. An OPRD1 variant (rs678849) was previously associated with methadone and buprenorphine efficacy in African-Americans with opioid use disorder. The objective of this study was to determine if the effect of rs678849 on opioid use disorder treatment outcome could be replicated in an independent population. Participants were recruited from African-American patients who h...

Therapeutic drug monitoring is more cost-effective than a clinically-based approach in the management of loss of response to infliximab in inflammatory bowel disease: an observational multi-centre study.

Empirical dose intensification and therapeutic drug monitoring (TDM) of infliximab (IFX) trough levels (ITL) and antibody (ATI) assays are recognised approaches for managing the loss of response (LoR) in inflammatory bowel disease (IBD) patients.

Reliable and easy-to-use LC-MS/MS-method for simultaneous determination of the antihypertensives metoprolol, amlodipine, canrenone and hydrochlorothiazide in patients with therapy-refractory arterial hypertension.

Therapy-refractory arterial hypertension is defined as a blood pressure (BP) in a subset of patients who fail to achieve BP control despite a three-drug regimen (including a diuretic). Various factors have impact on loss of therapy response. Drug-drug-interactions (DDIs) may cause altered pharmacokinetics (PK) of antihypertensive drugs. Upregulation of activity and expression of cytochrome P450 (CYP) enzymes can result in decreased plasma drug levels. Besides these PK considerations a significant problem co...

HIV-Related Stigma, Motivation to Adhere to Antiretroviral Therapy, and Medication Adherence among HIV-Positive Methadone-Maintained Patients.

Opioid agonist therapies with methadone are associated with higher levels of adherence to antiretroviral therapy (ART), yet no studies have explored factors associated with optimal ART levels in HIV-positive patients on methadone maintenance treatment (MMT), including explanatory pathways using mediation analysis.

Comment on "Methadone Dose Adjustments, Plasma R-Methadone Levels and Therapeutic Outcome of Heroin Users: A Randomized Clinical Trial".

Therapeutic Drug Monitoring of Levetiracetam in Select Populations.

Levetiracetam (LEV) is a broad spectrum antiepileptic drug (AED) that has a more favorable side effect profile compared to older AEDs. Therapeutic drug monitoring (TDM) of LEV is generally unnecessary given its linear and predictable dose-serum concentration relationship, lack of drug-drug interactions, and broad therapeutic window. However, there is growing evidence showing that alteration of LEV pharmacokinetics (PK) may occur in special populations calling for the need for TDM. The purpose of this review...

Methadone therapy modulate the dendritic cells of heroin addicts.

Evidence from various studies suggests that narcotics abuse may exert adverse immunomodulatory effects on immune responses. The aim of this research was to understand the effects of detoxification with methadone on the percentage of dendritic cells (DCs) and expression of its markers in heroin addicts. In this study, myeloid DCs (CD11c) and plasmacytoid DCs (CD123) were examined in two groups. These groups comprised of 20 healthy volunteers and 20 chronic heroin addicts, before and after detoxification with...

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

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. The aim of our study was to evaluate whether the biosimilar SB2 could be efficiently monitored using the LISA-TRACKER IFX and anti-IFX assays developed by Theradiag (Croissy Beaubourg, France).

Adverse Drug Reaction Reporting in Institutions Across Six Chinese Provinces: A Cross-sectional Study.

Although China's adverse drug reaction (ADR) reporting and monitoring has developed rapidly, many challenges remain. This study assessed ADR monitoring and reporting in China and identified monitoring problems.


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