Skip to main content
Advertisement

Main menu

  • Home
  • Articles
    • Current Issue
    • Fast Forward
    • Latest Articles
    • Archive
  • Information
    • Instructions to Authors
    • Submit a Manuscript
    • FAQs
    • For Subscribers
    • Terms & Conditions of Use
    • Permissions
  • Editorial Board
  • Alerts
    • Alerts
    • RSS Feeds
  • Virtual Issues
  • Feedback
  • Other Publications
    • Drug Metabolism and Disposition
    • Journal of Pharmacology and Experimental Therapeutics
    • Molecular Pharmacology
    • Pharmacological Reviews
    • Pharmacology Research & Perspectives
    • ASPET

User menu

  • My alerts
  • Log in
  • My Cart

Search

  • Advanced search
Journal of Pharmacology and Experimental Therapeutics
  • Other Publications
    • Drug Metabolism and Disposition
    • Journal of Pharmacology and Experimental Therapeutics
    • Molecular Pharmacology
    • Pharmacological Reviews
    • Pharmacology Research & Perspectives
    • ASPET
  • My alerts
  • Log in
  • My Cart
Journal of Pharmacology and Experimental Therapeutics

Advanced Search

  • Home
  • Articles
    • Current Issue
    • Fast Forward
    • Latest Articles
    • Archive
  • Information
    • Instructions to Authors
    • Submit a Manuscript
    • FAQs
    • For Subscribers
    • Terms & Conditions of Use
    • Permissions
  • Editorial Board
  • Alerts
    • Alerts
    • RSS Feeds
  • Virtual Issues
  • Feedback
  • Visit jpet on Facebook
  • Follow jpet on Twitter
  • Follow jpet on LinkedIn
Research ArticleABSORPTION, DISTRIBUTION, METABOLISM, AND EXCRETION

Benazeprilat Disposition and Effect in Dogs Revisited with a Pharmacokinetic/Pharmacodynamic Modeling Approach

Pierre-Louis Toutain, Hervé P. Lefebvre and Jon N. King
Journal of Pharmacology and Experimental Therapeutics March 2000, 292 (3) 1087-1093;
Pierre-Louis Toutain
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Hervé P. Lefebvre
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Jon N. King
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Figures & Data
  • Info & Metrics
  • eLetters
  • PDF
Loading

Abstract

The pharmacokinetic disposition of benazeprilat, an angiotensin-converting enzyme (ACE) inhibitor (ACEI), was assessed with a nonlinear binding model in dogs. A single oral benazepril dose, a single i.v. benazeprilat dose, or a daily oral dose of benazepril for 14 consecutive days was administered. The activity of benazeprilat was assessed by measuring plasma ACE inhibition with an ex vivo assay. Benazeprilat data were fitted to equations corresponding to a monocompartmental model with a volume equal to the extracellular space (∼0.2 l/kg) in which a fraction of benazeprilat was nonlinearily bound to ACE with both a saturable tissue and nontissue binding. The half-life of benazeprilat elimination determined from this physiologically based model was 39 ± 6 min. The estimated maximal binding capacity of benazeprilat to ACE was ∼23.5 nmol/kg, 90% of which was tissular. The estimated equilibrium constant of dissociation (Kd) of benazeprilat to ACE was 2.7 to 4.5 nM. IC50 values were one order of magnitude lower thanKd values (i.e., ∼0.27 nM). The nonlinear disposition of benazeprilat raised several issues and it was concluded that the benazeprilat concentration profile was only relevant to definition of an optimal dosage regimen if the appropriate kinetic model was used to interpret the plasma data.

Footnotes

  • Send reprint requests to: P.-L. Toutain, Ecole Nationale Vétérinaire de Toulouse, Laboratoire de Physiologie, 23, chemin des Capelles, 31076 Toulouse Cedex, France. E-mail:pl.toutain{at}envt.fr

  • ↵1 This work was supported by Novartis Santé Animale, Case postale, CH-4002 Bâle, Switzerland.

  • ↵2 Current address: Novartis Santé Animale, Case Postale, CH-4002 Bâle, Switzerland.

  • Abbreviations:
    ACE
    angiotensin-converting enzyme
    ACEI
    ACE inhibitor
    AUC
    area under the plasma concentration curve
    fcirc
    circulating fraction of ACE
    • Received May 20, 1999.
    • Accepted December 2, 1999.
  • The American Society for Pharmacology and Experimental Therapeutics
View Full Text

JPET articles become freely available 12 months after publication, and remain freely available for 5 years. 

Non-open access articles that fall outside this five year window are available only to institutional subscribers and current ASPET members, or through the article purchase feature at the bottom of the page. 

 

  • Click here for information on institutional subscriptions.
  • Click here for information on individual ASPET membership.

 

Log in using your username and password

Forgot your user name or password?

Purchase access

You may purchase access to this article. This will require you to create an account if you don't already have one.
PreviousNext
Back to top

In this issue

Journal of Pharmacology and Experimental Therapeutics: 292 (3)
Journal of Pharmacology and Experimental Therapeutics
Vol. 292, Issue 3
1 Mar 2000
  • Table of Contents
  • About the Cover
  • Index by author
Download PDF
Article Alerts
Sign In to Email Alerts with your Email Address
Email Article

Thank you for sharing this Journal of Pharmacology and Experimental Therapeutics article.

NOTE: We request your email address only to inform the recipient that it was you who recommended this article, and that it is not junk mail. We do not retain these email addresses.

Enter multiple addresses on separate lines or separate them with commas.
Benazeprilat Disposition and Effect in Dogs Revisited with a Pharmacokinetic/Pharmacodynamic Modeling Approach
(Your Name) has forwarded a page to you from Journal of Pharmacology and Experimental Therapeutics
(Your Name) thought you would be interested in this article in Journal of Pharmacology and Experimental Therapeutics.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
Research ArticleABSORPTION, DISTRIBUTION, METABOLISM, AND EXCRETION

Benazeprilat Disposition and Effect in Dogs Revisited with a Pharmacokinetic/Pharmacodynamic Modeling Approach

Pierre-Louis Toutain, Hervé P. Lefebvre and Jon N. King
Journal of Pharmacology and Experimental Therapeutics March 1, 2000, 292 (3) 1087-1093;

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Share
Research ArticleABSORPTION, DISTRIBUTION, METABOLISM, AND EXCRETION

Benazeprilat Disposition and Effect in Dogs Revisited with a Pharmacokinetic/Pharmacodynamic Modeling Approach

Pierre-Louis Toutain, Hervé P. Lefebvre and Jon N. King
Journal of Pharmacology and Experimental Therapeutics March 1, 2000, 292 (3) 1087-1093;
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
  • Tweet Widget
  • Facebook Like
  • Google Plus One

Jump to section

  • Article
    • Abstract
    • Materials and Methods
    • Results
    • Discussion
    • Footnotes
    • References
  • Figures & Data
  • Info & Metrics
  • eLetters
  • PDF

Related Articles

Cited By...

More in this TOC Section

  • Transport Is Not Rate-Limiting in Morphine Glucuronidation in the Single-Pass Perfused Rat Liver Preparation
  • Enhanced Hepatic Uptake and Bioactivity of Type α1(I) Collagen Gene Promoter-Specific Triplex-Forming Oligonucleotides after Conjugation with Cholesterol
  • Characterization of P-glycoprotein Inhibition by Major Cannabinoids from Marijuana
Show more ABSORPTION, DISTRIBUTION, METABOLISM, AND EXCRETION

Similar Articles

  • Home
  • Alerts
Facebook   Twitter   LinkedIn   RSS

Navigate

  • Current Issue
  • Fast Forward by date
  • Fast Forward by section
  • Latest Articles
  • Archive
  • Search for Articles
  • Feedback
  • ASPET

More Information

  • About JPET
  • Editorial Board
  • Instructions to Authors
  • Submit a Manuscript
  • Customized Alerts
  • RSS Feeds
  • Subscriptions
  • Permissions
  • Terms & Conditions of Use

ASPET's Other Journals

  • Drug Metabolism and Disposition
  • Molecular Pharmacology
  • Pharmacological Reviews
  • Pharmacology Research & Perspectives
ISSN 1521-0103 (Online)

Copyright © 2021 by the American Society for Pharmacology and Experimental Therapeutics