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Related Experiment Videos

Macromolecular aspartate aminotransferase

J Tharakan1, A Hossenbocus, M J Arthur

  • 1Department of Medicine and Gastroenterology, St Mary's Hospital, Newport, Isle of Wight.

European Journal of Gastroenterology & Hepatology
|January 23, 1999
PubMed
Summary
This summary is machine-generated.

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Macroenzymes are larger serum enzymes. A rare case of elevated aspartate aminotransferase (AST) was caused by macroenzyme formation, preventing unnecessary patient procedures.

Area of Science:

  • Biochemistry
  • Clinical enzymology

Background:

  • Macroenzymes are enzymes with higher molecular weight than their standard counterparts.
  • Elevated serum enzyme levels can indicate various health issues, necessitating diagnostic evaluation.

Observation:

  • Serum aspartate aminotransferase (AST) rarely forms complexes with immunoglobulins, leading to increased activity.
  • This phenomenon, known as macroenzyme formation, can mimic other pathologies.

Findings:

  • The study reports a patient with elevated AST levels attributed to macroenzyme formation.
  • This specific case highlights the clinical significance of recognizing macroenzymes.

Implications:

  • Awareness of macroenzyme formation is crucial for clinicians to avoid misdiagnosis.

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  • Identifying macroenzymes can prevent patients from undergoing unnecessary, invasive, and costly diagnostic procedures.