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Induced aflatoxicosis in rabbits: blood coagulation defects
Toxicology and Applied Pharmacology
|December 1, 1986
Summary
Aflatoxin B1 exposure in rabbits impairs blood clotting by prolonging clotting times and decreasing essential clotting factors. This toxicity also affects platelet counts and size, highlighting aflatoxicosis risks.
Area of Science:
- Toxicology
- Hematology
- Biochemistry
Background:
- Aflatoxicosis, caused by aflatoxin B1 (AFB1), is a significant health concern.
- AFB1 is known to cause liver damage, but its effects on hemostasis are less understood.
Purpose of the Study:
- To investigate the impact of acute and subchronic aflatoxicosis on blood clotting parameters and platelet behavior in rabbits.
Main Methods:
- Male New Zealand White rabbits were subjected to two experimental designs: daily oral AFB1 administration for 23 days (subchronic) or a single high dose (acute).
- Blood samples were collected at various time points to assess one-stage prothrombin times, activated partial thromboplastin times, fibrinogen, Factor IX, Factor VIII, Factor V activities, and platelet counts/size.
Main Results:
- Subchronic and acute AFB1 exposure significantly prolonged clotting times (prothrombin time and activated partial thromboplastin time).
- A decrease in fibrinogen, Factor IX, Factor VIII, and Factor V levels was observed.
- Platelet counts increased in subchronic exposure, while platelet size decreased in acute high-dose exposure.
Conclusions:
- AFB1-induced hepatic insufficiency and consumptive coagulopathy contribute to coagulation factor deficiencies.
- Aflatoxicosis presents a risk to blood clotting function and platelet dynamics.