Platelet dysfunction and inhibition of multiple electrode platelet aggregometry caused by penicillin

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Microfluidics in Assessing Platelet Function
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Christian Schulz1, Olga von Beckerath, Rainer Okrojek

  • 1Deutsches Herzzentrum and 1, Medizinische Klinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. chrisschulz@mytum.de.

Thrombosis Journal
|July 29, 2010
PubMed

Insights

Penicillin, a beta-lactam antibiotic, can inhibit platelet function, affecting tests like multiple electrode platelet aggregometry (MEA). This case study highlights penicillin

Area of Science:

  • Pharmacology
  • Hematology
  • Clinical Medicine

Background:

  • Beta-lactam antibiotics, such as penicillin, are known to potentially inhibit platelet function.
  • Previous studies focused on light transmission aggregometry and adhesion, leaving the impact on other common platelet function tests unclear.
  • Multiple electrode platelet aggregometry (MEA) is a widely used clinical assay for assessing platelet function.

Purpose of the Study:

  • To investigate the effect of penicillin treatment on platelet function as measured by multiple electrode platelet aggregometry (MEA).
  • To report a clinical case illustrating the impact of penicillin on platelet aggregation.

Main Methods:

  • A case report of a patient with a streptococcus infection treated with penicillin.
  • Assessment of platelet function using multiple electrode platelet aggregometry (MEA) during penicillin therapy.
  • Monitoring of coagulation parameters and clinical bleeding tendency.

Main Results:

  • The patient developed a mild bleeding tendency after three days of penicillin treatment.
  • MEA revealed significant inhibition of both ADP- and arachidonic acid-induced platelet aggregation.
  • Platelet inhibition was comparable to that observed in patients undergoing antiplatelet therapy; coagulation parameters remained normal.

Conclusions:

  • Penicillin therapy can significantly impact platelet function, leading to measurable inhibition in platelet aggregation.
  • Commonly used platelet function assays, including MEA, can detect this inhibition.
  • Discontinuation of penicillin resulted in the recovery of normal platelet function.

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