April 19, 2002Science

Role of Prostacyclin in the Cardiovascular Response to Thromboxane A 2

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Why the study?

Does prostacyclin modulate platelet-vascular interactions and limit the response to thromboxane A2 in vivo?

Population

Mice subjected to vascular injury

Comparison

Genetic deficiency in the PGI2 receptor, TxA2… vs Wild-type mice (implied)

Design

Preclinical

Authors

YCYan ChengInstitute of Geographic Sciences and Natural Resources Research SASandra AustinUniversity College Dublin BRBianca RoccaUniversità Cattolica del Sacro Cuore

Discussion

Member takes

Implication

Animal data link prostacyclin to limiting thromboxane-driven injury; leaves open relevance to COX-2 inhibitor cardiovascular risks in humans.

Structured PICO

Does prostacyclin modulate platelet-vascular interactions and limit the response to thromboxane A2 in vivo?

Population

Mice subjected to vascular injury

Intervention

Genetic deficiency in the PGI2 receptor (IP), TxA2 receptor (TP), both receptors, or treatment with a TP antagonist

Comparator

Wild-type mice (implied)

Outcome

Injury-induced vascular proliferation and platelet activationsurrogate

Prostacyclin modulates platelet-vascular interactions in vivo and limits the response to TxA2, providing a mechanistic explanation for the adverse cardiovascular effects of selective COX-2 inhibitors.

Cite This Study

Cheng et al. (2002) studied this question.

synapsesocial.com/papers/69fc039f6d730ca589dd6f12 https://doi.org/10.1126/science.1068711

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Implication

Animal data link prostacyclin to limiting thromboxane-driven injury; leaves open relevance to COX-2 inhibitor cardiovascular risks in humans.