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Elevated tissue plasminogen activator in patients with screening-detected abdominal aortic aneurysm
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Kärlkirurgi. (Vascular Surgery)
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Kärlkirurgi. (Vascular Surgery)
Vise andre og tillknytning
2007 (engelsk)Inngår i: Journal of Vascular Surgery, ISSN 0741-5214, Vol. 45, nr 6, s. 1109-1113Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Objective

A population-based case-control study with historical and current data was conducted in a population with a high prevalence of disease to explore the hypothesis that the fibrinolytic system may be involved in the early pathogenesis of abdominal aortic aneurysm (AAA).

Methods

Forty-two patients found to have AAA at population-based screening were compared with 100 controls matched for age and sex. Mass concentration of tissue plasminogen activator (tPA mass) and tissue plasminogen activator/plasminogen activator inhibitor-1 complex (tPA/PAI-1 complex mass) were analyzed in blood samples obtained at the screening (current), and in blood samples obtained from a study conducted 12 years previously on the same population (historical).

Results

Current tPA mass levels were significantly higher in AAA patients compared with controls (13.6 vs 11.4 μg/L, P = .016). A similar trend was observed in historical tPA mass levels (9.8 vs 8.2 μg/L, P = .062). Current and historical mass concentrations of tPA/PAI complex in AAA patients were similar to those in controls. Current tPA mass levels retained the associations with AAA in a logistic regression model after adjustment for history of atherosclerosis (odds ratio [OR], 1.1 per μg/L, P = .039) and current smoking (OR 1.1 per μg/L, P = .039). When family history of AAA was added in a logistic regression model, the OR for current tPA mass was 1.1 per μg/L (P = .056) and 1.1 per μg/L (P = .070) when treated hypertension was added.

Conclusion

The finding of elevated tPA mass, in contrast to tPA/PAI-1 complex, in plasma among patients with screening-detected AAA supports the hypothesis that the fibrinolytic system may be important in the early pathogenesis of AAA.

Clinical Relevance

Early detection by screening and repair is the only option to reduce mortality from abdominal aortic aneurysm (AAA) in the population. As a consequence, AAA screening programs have been launched in many countries. Most AAAs detected by screening are small, however, and the current treatment of these is limited to watchful waiting. Other therapeutic or preventive strategies are needed, necessitating a profound knowledge of the pathogenesis of AAA.

sted, utgiver, år, opplag, sider
2007. Vol. 45, nr 6, s. 1109-1113
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-11688DOI: 10.1016/j.jvs.2007.02.001ISI: 000246931500003OAI: oai:DiVA.org:uu-11688DiVA, id: diva2:39457
Tilgjengelig fra: 2007-10-12 Laget: 2007-10-12 Sist oppdatert: 2011-02-08bibliografisk kontrollert

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