View clinical trials related to Pharmacokinetics.
Filter by:The aim of this study is to elaborate nomograms to optimize amikacine first dosing in critically ill patients, using a population pharmacokinetics model elaborated with multicentric data.
The purpose of the study is to measure levels of any of the following AEDs (levetiracetam, phenobarbital, phenytoin, ketamine, valproic acid, lacosamide) in blood and effluent on critically ill patients receiving CRRT in order to characterize drug pharmacokinetics and optimize dosing strategies in patients on CRRT.
Background: O-GlcNAcase (OGA) is a brain enzyme. It may play a role in brain disorders like Alzheimer s disease. Researchers want to see if a new drug can be used with positron emission tomography (PET) scans to show OGA better. Researchers want to learn more about how it acts in healthy people. Objectives: To test if the new drug [18F]OGA-1 can measure its receptor. To determine whether the same results occur when scanning a person twice. Eligibility: Healthy adults age 18 and older who are already enrolled in a separate protocol. Design: Some participants will have 1 whole-body PET scan during one 4-hour visit to the clinic. Some will have 2-3 brain scans (PET and MRI) over 2-3 days. For the PET scan, a needle will guide a thin plastic tube (IV catheter) into an arm vein. A small amount of radioactive chemical will be injected through the catheter. The needle will be removed. Only the catheter will be left in the vein. Another IV catheter may be placed to draw blood. Blood pressure, heart rate, and breathing rate will be measured. Participants will have an electrocardiogram. Participants will lie on a bed that slides in and out of the donut-shaped scanner. The scan will last 2-3 hours. For brain PET scan, participants will wear a plastic mask to keep their head still. For magnetic resonance imaging (MRI) scan, participants will lie on a table. The table slides in and out of the MRI scanner. This is a metal cylinder in a strong magnetic field. Participants will be in the scanner up to 1 hour.
Cytomegalovirus (CMV) is the most common opportunistic viral pathogen in solid organ transplant receptors (SOTR). In Mexico, the experience using generic immunosuppressants have been demonstrated a wide variation in the pharmacokinetic parameters between generic and innovative formulation, resulting in a suboptimal absorption of the drug and reaching infratherapeutic trough levels in blood. In this study the investigators will compare the pharmacokinetic parameters of innovative and generic valganciclovir in renal transplant recipients.
The purpose of this study is to evaluate the Pharmacokinetics and safety/tolerability between Fimasartan/Amlodipine/Hydrochlorothiazide and co administration of Fimasartan/Amlodipine and Hydrochlorothiazide in Healthy volunteers.
This will be an open-label, randomized, 3-treatment, 2-period, 2-sequence study in healthy subjects to evaluate the single-dose PK of milademetan when given as monotherapy and when administered with steady-state levels of the strong CYP3A4 inhibitors itraconazole or posaconazole. The duration of the study for each individual subject will be approximately 49 days from the start of Screening through Study Discharge. Subjects will remain in-house for up to 23 days, including 22 overnight stays.
The current study will evaluate the plasma pharmacokinetics of metoprolol in a cohort of 8 adult volunteers who are receiving regular hemodialysis treatment (HD) 3 days a week for 4 hours each day and have been taking a total daily dose of 25-200 mg of metoprolol succinate for >30 days as part of their usual care. Blood sampling will occur over 10 hours, with frequent sampling during HD and in the 4 hours after termination of HD treatment. The 8 subjects will all receive their prescribed dose (25-200 mg total daily dose) 2 hours prior to HD treatment. The pre-HD sample will also be sent for pharmacogenomics genotyping. Safety and pharmacodynamic assessments (blood pressure (BP) and heart rate (HR) assessments) will be performed throughout the study. Axiom Precision Medicine Research Array (Affymetrix, Santa Clara, CA) will be used to evaluate genotype of CYP2D6. CYP2D6 phenotype will be evaluated using the ratio of parent drug to metabolite. Non-compartmental analyses will be performed to compare maximum concentrations (Cmax), time to maximum concentration and area under the curve from time 0 to the last measurable sample (AUClast) between the two phases. Compartmental analyses will be performed to construct a model to explain time-dependent changes in metoprolol clearance. Monte Carlo simulations will be performed to compare metoprolol pharmacokinetic profiles on and off HD.
This study evaluates the safety of administering single ascending doses (150, 300, 600, and 900 mg) of a citrus extract of the flavonoid narigenin, and assesses the blood concentrations of naringenin following oral administration of the extract.
WP1.1. PK/PD target attainment: Plasma exposure, Excretion via urine & ELF exposure; WP1.2. Predictive dosing algorithm; WP1.3. ECMO subset
This is a randomized, double-blind, 3-arm, parallel-group single-dose study to compare the PK, PD, safety, tolerability, and immunogenicity of LusiNEX (Mycenax tocilizumab) versus RoActemra (EU tocilizumab) and Actemra (US tocilizumab) after a single IV infusion of 4 mg/kg in healthy volunteers (hereafter referred to as subjects). The therapeutic dose of tocilizumab starts with 4 mg/kg and ranges to 12 mg/kg, considering 4 mg/kg is the lowest dose, the same has been selected for the study.