Related Experiment Video

Updated: Aug 30, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
10:14

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Published on: May 16, 2014

Saturation kinetics of iodipamide

S K Lin, A A Moss, S Riegelman

    Investigative Radiology
    |March 1, 1977
    PubMed

    To characterize the saturation kinetics of iodipamide, timed samples of blood, urine, and bile were taken from two unanesthetized dogs infused with iodipamide at increasing rates to achieve various steady state blood concentrations. Biliary excretion rate of iodipamide reached an asymptote with increasing blood concentration, indicating a biliary transport maximum (Tm) of 15.2 to 16.2 mgI/min. Urinary excretion was not a pure, first order process and urinary excretion rate was higher than the glomerular filtration rate corrected for plasma protein binding, suggesting that active tubular secretion may play a part. Extrarenal elimination followed Michaelis-Menten kinetics. Estimates of maximum rate (Vm) and Michaelis-Menten constant (Km) were obtained graphically. The estimated values of Vm were 4 to 6 times that of biliary Tm. In acute infusion experiments the iodipamide excreted in the bile and urine and that remaining in the organs analyzed accounted for only a fraction of the dose administered; no significant accumulation of iodipamide was found in the liver.

    More Related Videos

    Chemoselective Preparation of 1-Iodoalkynes, 1,2-Diiodoalkenes, and 1,1,2-Triiodoalkenes Based on the Oxidative Iodination of Terminal Alkynes09:54

    Chemoselective Preparation of 1-Iodoalkynes, 1,2-Diiodoalkenes, and 1,1,2-Triiodoalkenes Based on the Oxidative Iodination of Terminal Alkynes

    Published on: September 12, 2018

    Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction08:00

    Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction

    Published on: April 10, 2026

    Related Concept Videos

    Redox Titration: Iodimetry and Iodometry01:23

    Redox Titration: Iodimetry and Iodometry

    Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...
    One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution01:09

    One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution

    The one-compartment open model is a simplified approach used in pharmacokinetics to understand the distribution and elimination of a drug administered through an intravenous bolus. This model assumes rapid drug dispersal throughout the body and elimination using a first-order process. Key pharmacokinetic parameters, such as the elimination rate constant (k), half-life (t1/2), and the apparent volume of distribution (Vd), can be estimated from this model. The elimination rate is calculated from...
    One-Compartment Model: IV Infusion01:09

    One-Compartment Model: IV Infusion

    Intravenous (IV) infusion is often utilized when continuous and controlled drug delivery is necessary, such as during surgery or in the treatment of chronic diseases. This method offers numerous advantages, including immediate drug action, precise control over dosage, and bypassing the first-pass metabolism.
    The one-compartment model for IV infusion uses mathematical equations to describe the rate of change in drug quantity in the body. At steady-state or infusion equilibrium, the drug input...
    Drug Accumulation During Multiple Dosing: Intermittent IV Infusions01:24

    Drug Accumulation During Multiple Dosing: Intermittent IV Infusions

    Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...
    Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

    Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

    Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
    Pharmacokinetic–Pharmacodynamic Relationship: Intensity of Dose-Effect Relationship01:23

    Pharmacokinetic–Pharmacodynamic Relationship: Intensity of Dose-Effect Relationship

    Pharmacodynamics explores the relationship between drug concentration and its effect. In a quantal response drug, the duration of action better correlates with drug concentration, while for graded effect drugs, the intensity of response is more relevant. This intensity depends on the dose, drug removal rate, and the region of the concentration–response curve.The concentration–response curve can be divided into three regions. Region 3 (80–100% maximum response) demonstrates that even as drug...