Snake Venom Hydrogels as a Rapid Hemostatic Agent for Uncontrolled Bleeding

Area of Science:

• Biomaterials Science
• Hemostasis Research
• Toxicology

Background:

• Uncontrolled bleeding from trauma is a leading cause of preventable death.
• Existing hemostatic agents often require a functional clotting system and are gauze-based.
• An imbalance between coagulation and fibrinolysis contributes to excessive bleeding.

Purpose of the Study:

• To develop a novel rapid wound sealant for effective hemostasis.
• To create a hemostatic agent that functions independently of the host's clotting system.
• To utilize recombinant snake venom proteins within a hydrogel scaffold.

Main Methods:

• Development of a synthetic thermoresponsive hydrogel scaffold.
• Incorporation of recombinant procoagulant (ecarin) and antifibrinolytic (textilinin) snake venom proteins.
• In vitro and in vivo testing of the hydrogel sealant's efficacy and safety.

Main Results:

• Rapid clot formation within 60 seconds, significantly faster than normal clot formation (8 minutes).
• Effective inhibition of clot breakdown by textilinin at nanomolar concentrations.
• Significant reduction in warfarin-induced bleeding in vivo (48% to 12% bleed volume) with demonstrated immune compatibility.

Conclusions:

• A new class of hemostatic agents has been developed using recombinant snake venom proteins.
• The hydrogel sealant rapidly forms stable blood clots, even in the presence of anticoagulants.
• This technology offers a promising solution for managing traumatic bleeding, particularly in patients on blood thinners.