What is the clinical evidence from this study?

Study design: Other. Intervention: A2P5P and A3P5P (P2Y1 antagonists). Primary outcome: ADP-induced platelet shape change, aggregation, and calcium movements.

What question did this study set out to answer?

This study investigates the necessity of the P2Y1 receptor in ADP-induced platelet aggregation.

July 1, 1998Blood

The P2Y1 Receptor Is Necessary for Adenosine 5′-Diphosphate–Induced Platelet Aggregation

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Key result

The P2Y1 receptor, coupled to intracellular calcium mobilization, is necessary to trigger ADP-induced platelet aggregation, though another unidentified receptor is required for its completion.

Population

Platelets, B10 clone of rat brain capillary endothelial cells, and cloned human P2Y1 receptor expressed on…

Design

Preclinical

Authors

BHBéatrice HechlerInserm CLCatherine LéonInserm CVCatherine VialNational Health Service

Discussion

Member takes

Implication

Separates P2Y1 from adenylyl cyclase-coupled ADP receptor in animal platelets; leaves open unidentified receptor for targeted antithrombotic research.

Key Points

This study investigates the necessity of the P2Y1 receptor in ADP-induced platelet aggregation.
Evaluated effects of P2Y1 antagonists A2P5P and A3P5P on platelet responses to ADP.
Conducted comparative analysis on native P2Y1 receptor in BCEC and human P2Y1 receptor in Jurkat cells.
Measured calcium movements in response to ADP in various cell types.
A2P5P and A3P5P inhibited ADP-induced platelet shape change and aggregation (pA2 = 5).
These antagonists competitively blocked calcium movements in response to ADP in platelets and cell lines.
Findings suggest shared mechanisms between platelets and BCEC via P2Y1 receptor for ADP-induced aggregation.

Structured PICO

Population

Platelets, B10 clone of rat brain capillary endothelial cells (BCEC), and cloned human P2Y1 receptor expressed on Jurkat cells

Intervention

Selective and competitive P2Y1 antagonists (adenosine-2'-phosphate-5'-phosphate [A2P5P] and adenosine-3'-phosphate-5'-phosphate [A3P5P])

Outcome

ADP-induced platelet shape change, aggregation, calcium movements, and adenylyl cyclase inhibitionsurrogate

The P2Y1 receptor is necessary for ADP-induced platelet aggregation and calcium mobilization, but another unidentified receptor is responsible for adenylyl cyclase inhibition.

Cite This Study

Hechler et al. (1998) studied this question. A2P5P and A3P5P (P2Y1 antagonists) was evaluated on ADP-induced platelet shape change, aggregation, and calcium movements. The P2Y1 receptor, coupled to intracellular calcium mobilization, is necessary to trigger ADP-induced platelet aggregation, though another unidentified receptor is required for its completion.

synapsesocial.com/papers/6a6f1eddf44fa9f079dc84f2 https://doi.org/10.1182/blood.v92.1.152.413k27_152_159

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Implication

Separates P2Y1 from adenylyl cyclase-coupled ADP receptor in animal platelets; leaves open unidentified receptor for targeted antithrombotic research.

The P2Y1 Receptor Is Necessary for Adenosine 5′-Diphosphate–Induced Platelet Aggregation

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

The P2Y1 Receptor Is Necessary for Adenosine 5′-Diphosphate–Induced Platelet Aggregation

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Also Consider