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Related Experiment Videos

A simple isotopic assay method for human serum phospholipase A2 activity.

A Mäkelä1, T Kuusi, P Somerharju

  • 1Second Department of Surgery, Faculty of Medicine, University of Helsinki, Finland.

Scandinavian Journal of Clinical and Laboratory Investigation
|October 1, 1987
PubMed
Summary

A new assay accurately measures serum phospholipase A2 (PLA2) activity. This rapid method aids in quickly identifying acute hemorrhagic pancreatitis by detecting significantly elevated PLA2 levels.

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Area of Science:

  • Biochemistry
  • Clinical Chemistry
  • Enzymology

Background:

  • Phospholipase A2 (PLA2) plays a role in various physiological and pathological processes.
  • Accurate and rapid determination of serum PLA2 activity is crucial for diagnosing conditions like acute pancreatitis.

Purpose of the Study:

  • To develop and validate a novel, rapid assay for quantifying serum phospholipase A2 (PLA2) activity.
  • To establish the clinical utility of the assay for identifying acute hemorrhagic pancreatitis.

Main Methods:

  • Utilized a 2-(1-14C)palmitoyl-labelled dipalmitoyl phosphatidylcholine substrate for the assay.
  • Employed a simple liquid-liquid partition system for efficient separation of reaction products, replacing traditional thin-layer chromatography.
  • Optimized the assay using human pancreatic juice and determined optimal serum aliquot size to avoid interference.

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Main Results:

  • The assay demonstrated high sensitivity and specificity for serum PLA2 determination.
  • Normal serum PLA2 activity ranged from 1.2 to 3.0 IU/l in healthy subjects.
  • Patients with acute hemorrhagic pancreatitis exhibited markedly elevated PLA2 levels, ranging from 10.7 to 42.0 IU/l.

Conclusions:

  • The developed assay provides a rapid and reliable method for measuring serum PLA2 activity.
  • This assay facilitates the timely clinical identification of acute hemorrhagic pancreatitis.
  • The assay's efficiency allows for same-day results, improving diagnostic turnaround time.