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DOI: 10.1055/s-0038-1649136
Effect of Aspirin and Benadryl on Human Platelet Oxidative Phosphorylation and Aggregation
Publication History
Received
20 April 1973
Accepted
14 August 1973
Publication Date:
30 June 2018 (online)
Summary
Tightly coupled oxidative phosphorylation in washed human platelets and in lysates has been demonstrated. Both aspirin (25 μM) and Benadryl (0.15 mM) inhibited phosphorylating oxidation but had no effect on uncoupled respiration. It is likely that they were not involved in the electron transport chain but specifically affected the phosphorylation reactions similar to the action of oligomycin. Preincubation of Benadryl (1.3 mM) with platelet-rich plasma (PRP) at room temperature for 2 min inhibited ADP-induced platelet aggregation by 62% and abolished the second phase of aggregation. Addition of Benadryl to aggregating platelets in PRP during ADP-induced aggregation caused immediate disaggregation whether added during the first or second phase of aggregation. Aspirin had no such effect.
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