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Blood-borne tissue factor activity predicts major cerebrovascular events in patients undergoing carotid endarterectomy: results from a 1-year follow-up study

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dc.creator Krupinski, Jerzy
dc.creator Miguel Turu, Marta
dc.creator Font, M.ª Angels
dc.creator Catena, Esther
dc.creator Slevin, Mark
dc.creator Morchón, Sergio
dc.creator Rubio, Francisco
dc.creator Badimón, Lina
dc.creator Martínez-González, José
dc.date 2008-05-09T14:48:01Z
dc.date 2008-05-09T14:48:01Z
dc.date 2007-11-22
dc.date.accessioned 2017-01-31T01:13:43Z
dc.date.available 2017-01-31T01:13:43Z
dc.identifier Cerebrovascular Diseases 25(1-2): 32-39 (2008).
dc.identifier 1015-9770
dc.identifier http://hdl.handle.net/10261/4131
dc.identifier 10.1159/000111497
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/4131
dc.description [Background] Tissue factor (TF) expression is increased in inflammatory atherosclerotic plaques and has been related to plaque thrombogenicity. Blood-borne TF activity seems to contribute to a procoagulant state in patients with vascular risk factors. The aim of this study was to assess whether the expression of TF in carotid plaques from patients undergoing carotid endarterectomy (CEA) or/and blood-borne ('circulating') TF activity could predict future vascular complications.
dc.description [Methods] A total of 105 consecutive patients (85 male and 20 female aged 61-77years)undergoing CEA for high-grade internal carotid artery were included in the study. Carotid artery specimens were classified into active (n = 52; rich in inflammatory cells) and nonactive plaques (n = 53; poor in inflammatory cells or fibrous). TF mRNA levels in carotid plaques were assessed by real-time PCR (TaqMan Low-Density Arrays) and TF protein levels by Western blot. Blood-borne TF activity and other biochemical parameters, including low-density lipoprotein cholesterol (LDLc) levels and high-sensitivity C-reactive protein, were measured prior to surgery. Patients were followed up for 1 year and vascular and nonvascular complications were scored.
dc.description [Results] TF expression was higher in active CEA plaques. Patients with active CEA plaques exhibited higher plasma LDLc levels (3.6 ± 0.7 vs. 2.1 ± 1 mM, p < 0.05) that positively correlated with plaque TF mRNA levels (p = 0.0125; r = 0.9). Blood-borne TF activity did not correlate with plasma LDLc levels and was unrelated to the anatomo-pathological characteristic of the CEA plaques (thrombosis, rupture, inflammation, lipid core, necrosis or calcification). Circulating TF activity predicted vascular complications at 1 year, including fatal (OR, 1.18; 95% CI, 0.6-2.2, p < 0.01) and nonfatal ischemic stroke (OR, 1.22; 95% CI, 0.5-2.0, p < 0.05) and symptomatic peripheral vascular disease (OR, 1.48; 95% CI, 0.4-2.6, p < 0.005).
dc.description [Conclusions] Blood-borne TF activity prior to CEA but not local TF expression or plasma LDLc levels predict cerebrovascular and peripheral vascular disease events at 1 year in elderly patients subjected to CEA for high-grade carotid stenosis.
dc.description Peer reviewed
dc.format 22195 bytes
dc.format application/pdf
dc.language eng
dc.publisher S. Karger AG
dc.relation http://dx.doi.org/10.1159/000111497
dc.rights closedAccess
dc.subject Tissue factor
dc.subject Carotid endarterectomy
dc.subject Carotid plaques
dc.title Blood-borne tissue factor activity predicts major cerebrovascular events in patients undergoing carotid endarterectomy: results from a 1-year follow-up study
dc.type Artículo


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