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Related Experiment Videos

Assessment of liver function: the current situation

D H Van Thiel1, T Hassanein

  • 1Oklahoma Transplantation Institute, Baptist Medical Center of Oklahoma, Oklahoma City 73112.

The Journal of the Oklahoma State Medical Association
|January 1, 1995
PubMed
Summary
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Hepatologists seek objective tests for liver function, like kidney or lung tests. Model drugs metabolized by cytochrome P-450 enzymes, such as lidocaine and caffeine, offer a way to quantify hepatic function in chronic liver disease.

Area of Science:

  • Hepatology
  • Pharmacology
  • Biochemistry

Background:

  • Hepatologists require reliable methods to quantify liver function, analogous to tests for renal and pulmonary diseases.
  • Objective measures of hepatic function are crucial for prognosis and treatment planning in chronic compensated liver disease.
  • Current methods for assessing liver function are limited, especially in advanced stages where transplantation decisions are paramount.

Purpose of the Study:

  • To review the utility of model drugs metabolized by cytochrome P-450 enzyme systems for quantifying hepatic function.
  • To evaluate the advantages and disadvantages of lidocaine and caffeine as probes of liver function.
  • To highlight the need for objective criteria in assessing liver health for compensated chronic liver disease patients.

Main Methods:

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  • Utilizing model drugs exclusively metabolized by hepatic cytochrome P-450 enzyme systems.
  • Quantifying alterations in pharmacokinetic parameters, including clearance rates and metabolite formation.
  • Comparing the use of lidocaine and caffeine as probes for hepatic function assessment.

Main Results:

  • Model drugs provide objective criteria for estimating hepatic function.
  • Pharmacokinetic alterations due to liver disease can be quantitatively measured.
  • Lidocaine and caffeine are commonly employed drugs for this purpose, each with specific benefits and drawbacks.

Conclusions:

  • Model drugs metabolized by cytochrome P-450 systems serve as valuable tools for assessing liver function.
  • Objective quantification of hepatic function is essential for managing chronic compensated liver disease.
  • Further review of lidocaine and caffeine use will aid in selecting appropriate probes for liver function testing.