Total RNA was extracted from the venous thrombi using the TRIzol reagent (Invitrogen). The cDNA was prepared from DNase-treated RNA (Applied Biosystems). Real-time PCR was performed with ABI PRISM 7900 using TaqMan Universal PCR Master Mix and TaqMan Gene Expression Assays (Applied Biosystems) [17 (link)]. The following TaqMan Gene Expression Assays were used for each gene: assay ID Rn01538170_m1 for MMP-2, assay ID Rn00579162_m1 for MMP-9, assay ID Rn00565261_m1 for urokinase-type plasminogen activator (uPA), assay ID Rn01482578_m1 for tissue-type plasminogen activator (tPA), assay ID Rn01481341_m1 for plasminogen activator inhibitor-1 (PAI-1), assay ID Rn1462586_m1 for fibrinogen α chain, and assay ID Rn99999916_s1 for glyceraldehyde-3-phosphate dehydrogenase (GAPDH). GAPDH was used as an internal control.
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