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Antithrombotic effect of thiopurinol
R Srivastava1, A Mishra, R Pratap
1Division of Pharmacology, Central Drug Research Institute, Lucknow, India.
Thrombosis Research
|June 15, 1989
Summary
Thiopurinol, a pyrazolo pyrimidine derivative, effectively prevented blood clots in animal models. Its antithrombotic effects stem from inhibiting platelet aggregation, offering a potential new therapeutic avenue.
Area of Science:
- Pharmacology
- Biochemistry
- Cardiovascular Research
Background:
- Thrombosis poses a significant health risk, necessitating novel antithrombotic agents.
- Pyrazolo pyrimidine derivatives represent a class of compounds with potential therapeutic applications.
Purpose of the Study:
- To evaluate the antithrombotic activity of ten pyrazolo pyrimidine derivatives.
- To investigate the mechanism of action of the most potent compound, Thiopurinol.
Main Methods:
- Pulmonary thromboembolism model in mice.
- Assessment of thrombus formation in cats.
- Platelet aggregation assays using adenosine diphosphate (ADP) and arachidonic acid.
Main Results:
- Thiopurinol demonstrated dose-dependent protection against thromboembolism in mice.
- Thiopurinol inhibited thrombus formation in cats and platelet aggregation induced by ADP and arachidonic acid.
- Thiopurinol showed no anti-inflammatory or cardiovascular effects and did not inhibit superoxide generation.
Conclusions:
- Thiopurinol exhibits significant antithrombotic activity.
- The antithrombotic mechanism of Thiopurinol involves the inhibition of platelet aggregation.
- Thiopurinol is a promising candidate for further development as an antithrombotic drug.