Wang X, Hsu MY, Steinbacher TE, Monticello TM, Schumacher WA. Quantification of platelet composition in experimental venous thrombosis by real-time polymerase chain reaction.
Thromb Res 2007;
119:593-600. [PMID:
16797058 DOI:
10.1016/j.thromres.2006.04.011]
[Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2005] [Revised: 12/07/2005] [Accepted: 04/19/2006] [Indexed: 11/22/2022]
Abstract
INTRODUCTION
Platelets play a key role in thrombus formation. Determination of the platelet component in a thrombus provides pathophysiological insights to the thrombotic event and aids in selecting an appropriate therapeutic intervention. In this study a sensitive and reliable method to characterize the cellular components of experimental thrombi was developed using real-time polymerase chain reaction (PCR).
METHODS AND RESULTS
Vena cava thrombosis was induced by either oxidative injury to topical FeCl(2) (FeCl(2)-VT) or stenosis-limited blood flow and a hypotonic pressure stress (stasis-VT) in rats. High levels of platelets were identified in the thrombus containing vessels by real-time PCR analysis of target gene amplification using the 2(-DeltaDeltaCT) values by normalizing the data with gene expression in naive vessels and with a housekeeping gene, ribosomal protein L32. By this analysis, the levels of PF-4 (as a platelet marker) mRNA were significantly higher in FeCl(2)-VT (2(-DeltaDeltaCT)=7.8) than in stasis-VT (2(-DeltaDeltaCT)=4.2, p<0.05). Enhanced platelet enrichment in FeCl(2)-VT was also confirmed qualitatively by scanning electronic microscopic analysis. In addition, real-time PCR using a panel of genes representing vascular injury, inflammation and thrombosis showed marked induction (2(-DeltaDeltaCT)>5) in MCP-1, IL-1beta, iNOS and P-selectin mRNA expression in both models.
CONCLUSIONS
These data demonstrate the utility of real-time PCR to quantitate platelets and other cell components in vascular thrombosis, which may facilitate the characterization and thus therapeutic intervention of a particular thrombotic event in both preclinical animal models and clinical conditions.
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