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DOI: 10.1055/s-0037-1613304
Diurnal Variation in PAI-1 Activity Predominantly Confined to the 4G-allele of the PAI-1 Gene
Publikationsverlauf
Received
22. Februar 2002
Accepted after resubmission
24. Juli 2002
Publikationsdatum:
08. Dezember 2017 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035024/200205/lookinside/thumbnails/10-1055-s-0037-1613304-1.jpg)
Summary
We examined the diurnal pattern in Plasminogen Activator Inhibitor-type 1 (PAI-1) activity and Plasminogen activator (t-PA) in relation to the 4G/5G-polymorphism in the promoter of the PAI-1 gene. The analyses were performed in the Arnhem Elderly Study, a populationbased study of 598 elderly. A single blood sample was drawn and the time of blood sampling was recorded (between 8 a. m. and 5.30 p. m.). Plasma PAI-1 activity was strongly associated with time of blood sampling, showing the highest values in the early morning. The diurnal pattern was clearly present in the 4G/4G (n = 184) and 4G/5G (n = 275) genotypes, but not in the 5G/5G-genotype (n = 139). T-PA antigen showed a weak diurnal variation, which did not differ across the variants of the 4G/5G-polymorphism. Our findings raise the hypothesis that 5G-homozygotic persons may be relatively protected from diurnal variation in the occurrence of coronary events.
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