Structure-Function Relationship of 3-Phosphoglycerate Analogues with Platelet Aggregation and Thromboxane A₂ Formation

Abstract

We have studied the effects of 2,3-diphosphoglycerate (2,3-DPG), 3-phospho-glycerate (3-PG), 3-phosphoglyceraldehyde (3-PGA), 2-phosphoglycerate (2-PG) and β-glycerol phosphate (β-GP) on platelet aggregation and on thromboxane B₂ (TXB₂) formation. The results show that 2,3-DPG, 3-PG, and 3-PGA inhibited platelet aggregation and TXB₂ formation induced by norepinephrine, ADP, epinephrine, and collagen; but they also induced platelet aggregation and TXB₂ formation in the presence of subthreshold concentrations of Na arachidonate. 2-PG and β-GP were inactive. The results also show that there is a structure-function relationship between 2,3-DPG, 3-PG, and 3-PGA with platelet aggregation phenomena and prostaglandin synthesis.

Hypobaric Hypoxia Causes Elevated Thrombin Generation Mediated by FVIII that is Balanced by Decreased Platelet Activation

“…At the same time 2,3-DPG inhibits platelet aggregation. 39 These two mechanisms likely cause decreased platelet activation at high altitude.…”