Thromb Haemost 2005; 93(01): 92-96
DOI: 10.1160/TH04-09-0560
Blood Coagulation, Fibrinolysis and Cellular Haemostasis
Schattauer GmbH

The plasminogen activator inhibitor (PAI-1) 4G/5G promoter polymorphism and PAI-1 levels in ischemic stroke

A case-control study
Mary-Lou van Goor
1   Departments of Neurology, The Netherlands
,
Encarna Gómez García
2   Hematology of the Erasmus Medical Center Rotterdam, The Netherlands
,
Frank Leebeek
2   Hematology of the Erasmus Medical Center Rotterdam, The Netherlands
,
Geert-Jan Brouwers
2   Hematology of the Erasmus Medical Center Rotterdam, The Netherlands
,
Peter Koudstaal
1   Departments of Neurology, The Netherlands
,
Diederik Dippel
1   Departments of Neurology, The Netherlands
› Author Affiliations
Financial support: This study was supported by a grant from the Revolving Fund of the Erasmus MC, and by the Stichting Neurovasculair Onderzoek Rotterdam.
Further Information

Publication History

Received 02 September 2004

Accepted after revision 11 October 2004

Publication Date:
14 December 2017 (online)

Summary

High levels of plasminogen activator inhibitor type 1 (PAI-1) have been implicated as a risk factor for cardiovascular disease, but its precise role remains controversial.The 4G allele of the PAI-1 4G/5G promoter polymorphism is associated with higher levels of PAI-1. We studied the relationship between ischemic stroke and the PAI-1 4G/5G polymorphism and PAI-1 antigen levels. We performed a case-control study among patients aged 18–75 years with first ischemic stroke, confirmed by CT.All patients were screened for cardiovascular risk factors, cardiac disorders and large vessel disease. We excluded patients with a definite non-atherosclerotic cause of the stroke and patients using oral anticoagulants. Population-controls were age -and sex-matched, without a history of stroke, and of the Caucasian race.Venous blood samples were taken for PAI-1 4G/5G polymorphism and PAI-1 level one week after stroke.We included 124 patients and 125 controls. Mean age was 56 yrs (range 18 to 75 yrs). Sixty one patients (50%) and 58 (47%) controls were heterozygous for the PAI-1 4G/5G polymorphism.The homozygous 4G/4G genotype was found in 33 patients (27%) and in 36 controls (29%). The odds ratio of ischemic stroke associated with 4G-carriers versus 5G/5G homozygotes was 1.0 (95% CI: 0.6–1.8).The relative risk of ischemic stroke associated with the level of PAI-1 in the upper quartile was 0.73 (95%CI: 0.4 to 1.4). Neither the PAI-1 4G/5G polymorphism nor the PAI-1 antigen level is a strong risk factor for ischemic stroke.

 
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