Lp-PLA2 activity and mass for prediction of incident abdominal aortic aneurysms: A prospective longitudinal cohort study.

Abstract:

BACKGROUND AND AIMS:The pathogenesis of abdominal aortic aneurysm (AAA) shares several common pathways with atherosclerosis. Prospective clinical plasma biomarker studies in AAA have been hampered by the need for very large cohorts and long follow-up time. METHODS:We analyzed a prospective longitudinal cohort of middle-aged individuals from the cardiovascular cohort of the Malmö Diet and Cancer study (n = 5551; 1991-94). The plasma biomarkers lipoprotein-associated phospholipase A2 (Lp-PLA2 activity and mass), proneurotensin and C-reactive protein, and conventional risk factors at baseline were measured in patients with incident AAA during follow-up, and compared to individuals without a diagnosis of AAA. Subjects were followed until December 31st, 2013. Multivariable analyses were expressed in terms of hazard ratios (HR) per 1 standard deviation increment of each respective log-transformed plasma biomarker in the Cox proportional hazard models. RESULTS:Cumulative incidence of AAA was 1.5% (men 2.9%, women 0.5%) during a median follow-up period of 20.7 years. Overall, 84 individuals had an incident AAA, of whom 22 (26.2%) were operated on and 16 (19.0%) had ruptured. Mean age of individuals with incident AAA was 59.7 years at study entry and AAA was diagnosed on average 14 years later. When adjusting for age, gender, smoking, body mass index, hypertension, and diabetes mellitus, Lp-PLA2 activity (HR 1.40; 95% CI 1.15-1.72) and Lp-PLA2 mass (HR 1.23; 95% CI 1.00-1.51) were independently associated with incident AAA. CONCLUSIONS:The plasma biomarkers Lp-PLA2 activity and mass were markers of AAA risk and this implies that AAA is an athero-thrombotic related disease.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Acosta S,Taimour S,Gottsäter A,Persson M,Engström G,Melander O,Zarrouk M,Nilsson PM,Smith JG

doi

10.1016/j.atherosclerosis.2017.04.014

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

14-18

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(17)30178-8

journal_volume

262

pub_type

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