Salivary gland extracts from the deerfly contain a potent inhibitor of platelet aggregation

Publication Type:Journal Article
Year of Publication:1993
Authors:S. A. Grevelink, Youssef, D. E., Loscalzo, J., Lerner, E. A.
Journal:Proceedings of the National Academy of Sciences USA
Volume:90
Pagination:9155-9158
Date Published:1993
Keywords:Biochemistry, Chrysops, Saliva, Tabanidae, USA
Abstract:

Salivary gland extracts of the deerfly (Chrysops) contain a potent inhibitor of platelet aggregation, which assists the insect in obtaining a blood meal. The extract prevents platelet aggregation induced by ADP, thrombin and collagen and inhibits fibrinogen binding to the glycoprotein IIb/IIIa receptor on platelets. The active component in deerfly salivary gland extract appears to be a protein that is comparatively more potent than the disintegrins present in viper venoms. Isolation and characterization of this protein may provide different directions in therapeutics and studies of normal platelet physiology.

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