Isolated microparticles, but not whole plasma, from women with preeclampsia impair endothelium-dependent relaxation in isolated myometrial arteries from healthy pregnant women
American Journal of Obstetrics and Gynecology, ISSN: 0002-9378, Vol: 187, Issue: 6, Page: 1686-1693
2002
- 121Citations
- 47Captures
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Metrics Details
- Citations121
- Citation Indexes121
- 121
- CrossRef91
- Captures47
- Readers47
- 47
Article Description
Objective: This study was performed to establish whether microparticles from plasma of women with preeclampsia cause endothelial dysfunction, as described for isolated myometrial arteries in preeclampsia. Study Design: Myometrial arteries were isolated from biopsy specimens obtained at cesarean delivery from healthy pregnant women (n = 22) and mounted in a wire myograph. Bradykinin concentration-response curves were obtained before and after 1-hour incubation or after overnight incubation with one of the following preparations of plasma from individual women with preeclampsia (n = 16): Whole plasma, microparticle-free plasma, isolated microparticles resuspended in physiologic saline solution or physiologic saline solution. Overnight incubation was also performed with microparticles isolated from healthy pregnant women (n = 6). One-hour incubation was performed with 2% or 10% solution and overnight incubation with 5% solution. Results: No effect of preeclamptic plasma, with or without microparticles, on bradykinin-mediated relaxation was observed. Overnight, but not 1-hour, incubation with preeclamptic microparticles caused abolishment of bradykinin-mediated relaxation in contrast to healthy pregnant microparticles ( P <.005). Conclusion: Preeclamptic microparticles, but not healthy pregnant microparticles cause endothelial dysfunction in isolated myometrial arteries from healthy pregnant women after overnight incubation, whereas other preeclamptic plasma constituents protect the endothelium from this effect. (Am J Obstet Gynecol 2002;187:1686-93.)
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S000293780200491X; http://dx.doi.org/10.1067/mob.2002.127905; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0036914683&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/12501084; https://linkinghub.elsevier.com/retrieve/pii/S000293780200491X
Elsevier BV
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