Purpose: The study aimed to determine the typical clearance and volume of distribution values of tamsulosin in patients with benign prostatic hyperplasia (BPH), and to identify factors with a measurable impact on the drug's elimination.
Methods: This open-label, single-arm population pharmacokinetic study involved 65 adult men with BPH who had been on tamsulosin therapy for at least seven days. The steady-state serum concentrations of tamsulosin were measured using liquid chromatography-tandem quadrupole mass spectrometry.
Optimal vitamin D status is very important for reflecting not only bone but overall woman's health. The aim of the study was to determine pharmacokinetic variability of 25-hydroxy vitamin D, to reveal and quantify the most significant factors that affect its variability in the population of healthy non-menopausal women using the population pharmacokinetic (PopPK) approach. The study population consisted of 74 healthy reproductive women aged from 35 to 50 years, without the use of any supplement.
View Article and Find Full Text PDFPurpose: Given that it has been reported that type 2 diabetes mellitus may affect the pharmacokinetics of a large number of drugs and that there are still no published population pharmacokinetic (PopPK) analyses in routinely treated patients with hypertension and type 2 diabetes mellitus as comorbid condition, the aim of this study was to determine PK variability of bisoprolol in 70 Serbian patients using the PopPK approach.
Methods: PopPK analysis was conducted using a nonlinear mixed effects model (NONMEM), version 7.3.
: Seizures, which could not be controlled by drug therapy, have profound negative influence on the quality of life of the affected person. If with clear locus of origin and accompanied by loss of consciousness, drug-resistant epilepsy could be treated by surgery.: The aim of this article was to review current status of epilepsy surgery through description of the most important operative methods and narrative comparison of their benefits and harms.
View Article and Find Full Text PDFTo date, many questions about the extent and cause of pharmacokinetic (PK) variability of even the most widely studied and prescribed β1-adrenergic receptor blockers, such as metoprolol and bisoprolol, remain unanswered. Given that there are still no published population pharmacokinetic (PopPK) analyses of bisoprolol in routinely treated patients with acute coronary syndrome (ACS), the aim of this study was to determine its PK variability in 71 Serbian patients with ACS. PopPK analysis was conducted using a nonlinear mixed-effects model (NONMEM), version 7.
View Article and Find Full Text PDFInt J Clin Pharmacol Ther
April 2018
Objectives: Asthma and vitamin D deficiency are widespread in the pediatric and adolescent population. The aim of this study was to develop a population pharmacokinetic (PPK) model and to evaluate the most important factors that can significantly affect clearance of 25-hydroxy vitamin D in asthmatic children using PPK analysis.
Materials And Methods: The study population included school children and adolescents from 7 to 18 years of age of both sexes.
High prevalence of therapy-resistant epilepsy demands development of anticonvulsants with new mechanisms of action. Brivaracetam is an analogue of levetiracetam which binds to the synaptic vesicle protein 2A (SV2A) and decreases release of excitatory neurotransmitters. Areas covered: Relevant published studies were searched for by predefined strategy in MEDLINE, EBSCO and SCINDEKS electronic databases.
View Article and Find Full Text PDFBackground And Objectives: Bisoprolol is a selective beta adrenergic antagonist commonly used in treatment of coronary artery disease (CAD). The aim of our analysis was to estimate and identify different factors that could affect bisoprolol clearance (CL) and develop a population pharmacokinetic model in patients with stable coronary artery disease (CAD).
Methods: Population pharmacokinetic analysis was performed by using sixty-six plasma concentrations from the same number of patients (mean age 60.
Eur J Drug Metab Pharmacokinet
October 2017
Although carbamazepine is one of the oldest anticonvulsant drugs, it is still heavily utilized for treatment of epilepsy in children. The aim of this article was to review the current knowledge about pharmacokinetics and pharmacogenetics of carbamazepine in children. The literature for this review was systematically searched for in the MEDLINE and SCINDEKS databases.
View Article and Find Full Text PDFPurpose: The purpose of this study is to investigate the effect of two of the most important functional CYP1A2 variations -3860G > A and -163C > A on carbamazepine pharmacokinetics in Serbian pediatric epileptic patients.
Methods: The study involved 40 Serbian pediatric epileptic patients on steady-state carbamazepine treatment. Genotyping for -3860G > A and -163C > A was carried out using PCR-RFLP method, and carbamazepine plasma concentrations were determined by high pressure liquid chromatography (HPLC) method.
The aim of our study was to estimate clearance of bisoprolol and reveal the factors that could influence its pharmacokinetic (PK) variability in hypertensive patients on hemodialysis, using the population PK analysis. Parameters associated with plasma concentration of bisoprolol at steady state were analyzed in 63 patients (mean age 62.12 years, mean total weight 69.
View Article and Find Full Text PDFThe aim of this study was to develop a population pharmacokinetic (PK) model for clearance of mycophenolic acid (MPA) in adult renal transplant recipients, to quantify the PK parameters and the influence of covariates on the MPA pharmacokinetic parameters. Parameters associated with plasma concentrations of MPA at steady-state were analyzed in 70 renal transplant recipients (mean age 42.97 years; mean total body weight 75.
View Article and Find Full Text PDFInt J Clin Pharmacol Ther
January 2015
Objectives: The aim of our study was to develop a population pharmacokinetic (PPK) model for 25-hydroxyvitamin D clearance in a healthy young adult population in Serbia.
Methods: Study sample consisted of 70 healthy young students of the Faculty of Medical Science, University of Kragujevac, Serbia, with a mean age and body mass index of 22.39 ± 1.
The aim of this study was to derive population pharmacokinetic (PK) model for clearance (CL) of carvedilol in adult patients with chronic heart failure (CHF). Medication and demographic data were obtained from 52 Caucasian patients with CHF taking carvedilol. Population PK analysis was performed by nonlinear mixed-effects modeling (NONMEM) to estimate and identify different factors that could affect carvedilol CL.
View Article and Find Full Text PDFPurpose: The aim of the study was to develop a population pharmacokinetic (PK) model for clearance of bisoprolol in patients with congestive heart failure (CHF).
Methods: Parameters associated with the plasma concentrations of bisoprolol at steady-state were analyzed in 61 patients (mean age 66.21 ± 9.
Introduction: The aim of our study was to develop and use a population pharmacokinetic model for assessment of individual valproate clearance in children and young adults suffering from epilepsy.
Material And Methods: The analysis was performed using 52 steady-state concentrations of valproate collected from 26 epileptic patients during the routine clinical practice in our hospital. The mean values of age and total body weight were 19.
Methods Find Exp Clin Pharmacol
November 2008
The purpose of this study was to perform population pharmacokinetic (PPK) analysis on carbamazepine and to determine the population model of clearance of this drug in terms of individual patient characteristics. A total of 107 steady-state serum concentrations from 97 adult and pediatric epileptic patients, collected during routine clinical care, were used for the analysis. To determine the influence of different covariates on the estimate of carbamazepine clearance we used the non-linear mixed effects modeling (NONMEM) software package with ADVAN1 subroutine.
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