TY - JOUR TT - Comparison of Maternal Platelets in Preeclampsia and Normotensive Pregnancies: An Ultrastructural Study AU - Erdem, Elif AU - Akkus, Murat AU - Tunik, Selcuk AU - Nergiz, Yusuf AU - Evsen, Mehmet Siddik AU - Taner, Mehmet Zeki PY - 2013 DA - June JF - International Archives of Medical Research JO - IAMR PB - Veysi AKPOLAT WT - DergiPark SN - 2146-6033 SP - 9 EP - 15 VL - 5 IS - 1 KW - Preeclampsia KW - platelets KW - ultrastructural structure N2 - Background: Preeclampsia is characterized by hypertension and proteinuria occuring after the 20th week of gestation. The purpose of this study was to compare the ultrastructural changes occuring in platelets of preeclamptic and normotensive pregnant women. Method: Venous blood samples of whom 20 with preeclampsia and 20 of normotensive, for platelets extraction were firstly centrifuged. After prefixation and postfixation, was dehydrated at the increased alcohol degrees, left in infiltration and blocked. Then, semi-thin sections taken with ultramicrotome were stained with toludine blue. The assesment was made through light microscope following thin sections being taken and stained with contrast, platelets were examined ultrastructurally and their electron micrographs were taken. Results: In the preeclampsia group the number of alpha and dense granules decreased, to a great extent, and the structures of channel systems in tubular structure, were observed to be irregular. Conclusion: It is clearly seen that preeclampsia induces cellular damage in platelets and in case of aggravation in preeclampsia, it may cause significant changes in cell membranes of platelets and cytoplasmic organelles. CR - Melanie McCabe White, Lisa K. Jennings Platelet protocols. Research and Clinical Laboratory Procedures. USA, Academic Press 1999. CR - Bizzozero G. Uber einen neuen Formbestandteil des Blutes und dessen Rolle bei der Thrombose und der Blutgerinnung. Virchows Arch Pathol Anat Physiol Klin Med 1881; 90: 216–284. CR - Hayem G. Sur le mechanism de’arret des hemorrhagies. C R Acad Sci 1878; 95:18–20. CR - Gerrard JM. Platelet aggregation: Cellular regulation and physiologic role. Hosp Pract 1998; 23:89–108. CR - Page CP. The involvement of platelets in nonthrombotic processes. Trends Pharmacol Sci 1988;9:66–71. CR - Roccella E. Report of the National High Blood Pressure Education Program Working Group on High blood pressure in pregnancy. Am J Obstet Gynecol, 2000;183:1-22. CR - Sankaralingam S, Arenas I, Lalu M et al. Preeclampsia: current understanding of the molecular basis of vascular dysfunction. Molecular medicine, 2006;3:1-20. CR - Sibai B. Diagnosis, prevention, and management of eclampsia. Obstet Gynecol, 2005; 105: 402–10. CR - Dekker G, Sibai B. Etiology and pathogenesis of preeclampsia: Current concepts. Am J Obstet Gynecol, 1998;179:1359-75. CR - Ballegeer V, Spitz B, de Baene L et al. Platelet activation and vascular damage in gestational hypertension. Am J Obstet Gynecol, 1992;166:629-33. CR - Weiss HJ. Platelet physiology and abnormalities of platelet function (first of two parts). N Engl J Med 1975;293:531– 541. CR - Richard C. Becker. Platelet Biology
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