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Topf HG, Rauh M, Rascher W, et al. Endothelial cells influence the sodium nitroprusside mediated inhibition of platelet aggregation by an as yet unkown pathway. Thromb J. 2012;10(1):6doi: 10.1186/1477-9560-10-6.
Topf, H. G., Rauh, M., Rascher, W., Dötsch, J., & Klinge, J. M. (2012). Endothelial cells influence the sodium nitroprusside mediated inhibition of platelet aggregation by an as yet unkown pathway. Thrombosis journal, 10(1), 6. https://doi.org/10.1186/1477-9560-10-6
Topf, Hans-Georg, et al. "Endothelial cells influence the sodium nitroprusside mediated inhibition of platelet aggregation by an as yet unkown pathway." Thrombosis journal vol. 10,1 (2012): 6. doi: https://doi.org/10.1186/1477-9560-10-6
Topf HG, Rauh M, Rascher W, Dötsch J, Klinge JM. Endothelial cells influence the sodium nitroprusside mediated inhibition of platelet aggregation by an as yet unkown pathway. Thromb J. 2012 May 07;10(1):6. doi: 10.1186/1477-9560-10-6. PMID: 22564812; PMCID: PMC3528661.
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Thromb J. 2012 May 07;10(1):6. doi: 10.1186/1477-9560-10-6.

Endothelial cells influence the sodium nitroprusside mediated inhibition of platelet aggregation by an as yet unkown pathway.

Thrombosis journal

Hans-Georg Topf, Manfred Rauh, Wolfgang Rascher, Jörg Dötsch, Jens M Klinge

Affiliations

  1. Klinik für Kinder und Jugendliche, University of Erlangen-Nuremberg, Loschgestr 15, 91054, Erlangen, Germany. [email protected].

PMID: 22564812 PMCID: PMC3528661 DOI: 10.1186/1477-9560-10-6

Abstract

UNLABELLED: The clinical use of Sodium nitroprusside (SNP) may be associated with an alteration of platelet function. The main focus of this study was the effect of SNP on platelet aggregation in the absence or presence of endothelial cells.

METHODS: Platelets were incubated with different concentrations of SNP with and without endothelial cells. Platelet aggregation was induced by ADP.

RESULTS: Platelet aggregation was significantly inhibited by all concentrations of SNP. Endothelial cells significantly increased this inhibitory effect of SNP. Time course studies showed an inverse correlation of incubation time to platelet aggregation inhibition in the absence of endothelial cells, and a direct correlation in the presence of endothelial cells. Blocking platelet and endothelial cell guanylate cyclase with 1 H-(1,2,4)-oxadiazolo(4,3-a) quinoxalin-1-one (ODQ), or pretreatment of the endothelial cells with cyclooxygenase - inhibitors, had no influence on the increased inhibitory effect of the endothelial cells. Cyanide reversed the inhibitory effect of SNP completely.

CONCLUSION: Endothelial cells play an important role in the SNP mediated inhibition of platelet aggregation. The effect is reversible only by cyanide, not by blocking classical NO signal transduction.

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