Abstract:
:Cyclooxygenase-2 (COX-2) inhibitors reduce angiogenic responses to a variety of stimuli, suggesting that products of COX-2 may mediate critical steps. Here, we show that thromboxane A2 (TXA2) is one of several eicosanoid products generated by activated human microvascular endothelial cells. Selective COX-2 antagonists inhibit TXA2 production, endothelial migration, and fibroblast growth factor-induced corneal angiogenesis. Endothelial migration and corneal angiogenesis are similarly inhibited by a TXA2 receptor antagonist, SQ29548. A TXA2 agonist, U46619, reconstitutes both migration and angiogenesis responses under COX-2-inhibited conditions. These findings identify TXA2 as a COX-2 product that functions as a critical intermediary of angiogenesis.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Daniel TO,Liu H,Morrow JD,Crews BC,Marnett LJsubject
Has Abstractpub_date
1999-09-15 00:00:00pages
4574-7issue
18eissn
0008-5472issn
1538-7445journal_volume
59pub_type
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