Angiogenic dysfunction in molar pregnancy - 19/08/11
Résumé |
Objective |
Molar pregnancy is associated with very early-onset preeclampsia. Since excessive circulating antiangiogenic factors may play a pathogenic role in preeclampsia, we hypothesized that molar placentas produce more antiangiogenic proteins than normal placentas.
Study Design |
This retrospective case-control study used a semiquantitative immunohistochemical technique to compare histologic sections of molar placentas to normal controls. Tissue slides were treated with 2 antisera: one recognized the antiangiogenic markers fms-like tyrosine kinase receptor 1 (Flt1) and its soluble form (sFlt1), while the other recognized vascular endothelial marker CD31. Stain intensity was graded from 1+ (strong focal staining) to 4+ (91-100% staining).
Results |
Molar placentas (n = 19) showed significantly more staining than controls (n = 16) for Flt/sFlt1 (P < .0001).
Conclusion |
There was a significant difference in Flt1/sFlt1 immunostaining intensity when molar placentas were compared to controls. This supports a hypothesis that the phenotype of preeclampsia in molar pregnancy may result from trophoblasts overproducing at least 1 antiangiogenic protein.
Le texte complet de cet article est disponible en PDF.Key words : antiangiogenic factors, fms-like tyrosine kinase receptor, hydatidiform mole, molar pregnancy, soluble fms-like tyrosine kinase receptor 1
Plan
| Dr Karumanchi is supported by a Clinical Scientist Award from the Burroughs Wellcome Fund and an Established Investigator Award from the American Heart Association and an investigator at the Howard Hughes Medical Institute. Dr Karumanchi is a coinventor on patents for the use of angiogenic proteins for the diagnosis/therapy of preeclampsia. Dr Karumanchi is a consultant to Abbott (Abbott Park, IL), Beckman Coulter (Fullerton, CA), Roche (Basel, Switzerland), and Johnson & Johnson (New Brunswick, NJ). |
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| Dr Kanter is currently with the Department of Obstetrics, Gynecology, and Reproductive Sciences, Magee-Women's Hospital, Pittsburgh, PA. |
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| Reprints not available from the authors. |
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| Cite this article as: Kanter D, Lindheimer MD, Wang E, et al. Angiogenic dysfunction in molar pregnancy. Am J Obstet Gynecol 2010;202:184.e1-5. |
Vol 202 - N° 2
P. 184.e1-184.e5 - février 2010 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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