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Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
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Protamine and Heparin Interactions: A Narrative Review.
Martina Crivellari1, Giovanni Landoni1,2, Jacopo D'Andria Ursoleo1
1IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy.
Annals of Cardiac Anaesthesia
|July 4, 2024
Summary
Protamine neutralizes heparin
Area of Science:
- Biochemistry
- Pharmacology
Background:
- Protamine is a key antidote for heparin's anticoagulant effects.
- Heparin-antithrombin III (AT III) complex formation promotes blood fluidity.
Purpose of the Study:
- To review protamine's interaction with heparin and its anticoagulant properties.
- To discuss protamine's efficacy against unfractionated and low molecular weight heparins.
- To highlight potential adverse reactions to protamine.
Main Methods:
- Literature review focusing on protamine-heparin interactions.
- Analysis of protamine's effects on coagulation factors and platelet function.
- Examination of protamine's antagonistic activity against different heparin types.
Main Results:
- Protamine dissociates the heparin-AT III complex, forming an inactive complex.
- Protamine exhibits dose-dependent anticoagulant properties, affecting coagulation and platelets.
- Protamine antagonizes both unfractionated heparin (UFH) and low molecular weight heparins (LMWH).
Conclusions:
- Protamine is an effective heparin antagonist with complex dose-dependent effects.
- Understanding protamine's interactions is crucial for managing heparin therapy.
- Awareness and early management of protamine-related allergic reactions are essential.
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