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Related Experiment Videos

[Increased liver enzymes: what should be done?].

E L Renner1, A Dällenbach

  • 1Institut für Klinische Pharmakologie, Universität Bern.

Therapeutische Umschau. Revue Therapeutique
|May 1, 1992
PubMed
Summary

Liver enzyme tests like transaminases, alkaline phosphatase (AP), and gamma-glutamyl transferase (G-GT) help detect liver disease. Differentiating between hepatocellular and cholestatic patterns is key for diagnosing conditions such as alcoholic liver disease and viral hepatitis.

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Area of Science:

  • Hepatology and clinical biochemistry.
  • Diagnostic markers for liver function.

Context:

  • Elevated liver enzymes are common indicators of hepatobiliary disease.
  • Transaminases (AST, ALT), alkaline phosphatase (AP), and gamma-glutamyl transferase (G-GT) are widely used.
  • Distinguishing between hepatocellular and cholestatic patterns is crucial.

Purpose:

  • To outline the diagnostic utility of key liver enzymes.
  • To differentiate between hepatocellular damage and cholestasis based on enzyme profiles.
  • To identify common causes of elevated liver enzymes in asymptomatic individuals.

Summary:

  • Elevated serum transaminases (AST, ALT) suggest hepatocellular damage, while AP and G-GT elevations indicate cholestasis.
  • The AST/ALT ratio and mitochondrial AST isoenzyme may help identify alcoholic liver disease.

Related Experiment Videos

  • Common causes of elevated liver enzymes include alcoholic liver disease, viral hepatitis, drug-induced liver injury, and non-alcoholic steatosis.
  • Further investigations are warranted if elevations persist for over six months despite lifestyle modifications.

    • Impact:

    • Provides a framework for interpreting liver enzyme patterns in clinical practice.
    • Aids in the differential diagnosis of liver conditions.
    • Highlights the importance of considering patient history, including alcohol consumption and drug use, in enzyme interpretation.