Key result
Platelet-derived TXA2 acts in a paracrine manner to up-regulate endothelial COX-2 expression and PGI2 synthesis via the p44/42 mitogen-activated protein kinase pathway.
Why the study?
Does platelet-derived TXA2 up-regulate COX-2 expression and prostanoid synthesis in human umbilical vein endothelial cells?
Does platelet-derived TXA2 up-regulate COX-2 expression and prostanoid synthesis in human umbilical vein endothelial cells?
Platelet-derived TXA2 acts in a paracrine manner to up-regulate endothelial COX-2 expression and PGI2 synthesis, providing insight into vascular homeostasis and the potential cardiovascular effects of selective COX-2 inhibitors.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating for platelet-endothelial prostanoid balance; leaves open relevance to COX-2 inhibitor cardiovascular risk.
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Caughey et al. (2001) studied this question. Platelet co-incubation or TXA2 vs. HUVECs without platelets/TXA2 was evaluated on COX-2 expression and prostanoid synthesis. Platelet-derived TXA2 acts in a paracrine manner to up-regulate endothelial COX-2 expression and PGI2 synthesis via the p44/42 mitogen-activated protein kinase pathway.
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