Aspirin and indomethacin, nonsteroidal antiinflammatory agents alter the responses to microvascular injury in brain and mesentery

William I. Rosenblum, F. El-Sabban, E. F. Ellis

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We can produce platelet aggregation in the pial or mesentric microcirculation by illuminating a microscopic field containing such vessels with an appropriately filtered mercury lamp in the presence of intravascular sodium fluorescein (4, 5). This phenomenon appears to be a result of endothelial damage produced by the light in the prescence of the dye (5). Pretreatment of the animal with either aspirin or indomethacin inhibits the aggregation in the pial arterioles (5), but enhances aggregation in the mesenteric arterioles (6). During the course of our published studies concerning aggregation we observed arteriolar constriction in the mesentery and dilation in the pia, the latter being augmented and the former being reduced by aspirin and indomethacin. These observations are the subject of this brief report.

Original languageEnglish
Pages (from-to)374-378
Number of pages5
JournalMicrovascular Research
Volume20
Issue number3
DOIs
StatePublished - 1980
Externally publishedYes

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