Related Experiment Video
Updated: Jun 29, 2026
07:03
A Low Mortality Rat Model to Assess Delayed Cerebral Vasospasm After Experimental Subarachnoid Hemorrhage
Published on: January 17, 2013
A model for venom-induced consumptive coagulopathy in snake bite
P P Tanos1, G K Isbister, D G Lalloo
1School of Pharmacy, University of Queensland, St. Lucia, QLD 4072, Brisbane, Australia.
Summary
A new model simulates how taipan venom toxins affect blood clotting. It shows antivenom is most effective if given immediately after snakebite to treat venom-induced consumptive coagulopathy (VICC).
Area of Science:
- Biochemistry
- Pharmacology
- Computational Biology
Background:
- Snake venoms often contain toxins that activate blood coagulation, leading to venom-induced consumptive coagulopathy (VICC).
- Understanding the dynamics of the coagulation cascade is crucial for developing effective antivenom therapies.
Purpose of the Study:
- To develop a semi-mechanistic model of the coagulation cascade.
- To investigate the impact of taipan venom procoagulant toxins and antivenom on clotting factor dynamics.
- To compare model predictions with clinical data from taipan envenomation.
Main Methods:
- Development of a semi-mechanistic mathematical model for the blood clotting cascade.
- Simulation of clotting factor concentrations over time post-envenomation.
- Comparison of simulation results with patient data.
Main Results:
- The model accurately predicted clotting factor concentrations in taipan envenomed patients.
- The procoagulant toxin's half-life was estimated to be at most 1 hour.
- Antivenom showed minimal impact on coagulation recovery unless administered very early.
Conclusions:
- The developed model accurately simulates VICC caused by taipan venom.
- Early administration of antivenom is critical for effective treatment of VICC.
- The model provides a framework for studying other venoms and drugs affecting coagulation.
Related Concept Videos
01:05Introduction to Hemostasis
Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...