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Laschkolnig, A.* ; Kollerits, B.* ; Lamina, C.* ; Meisinger, C. ; Rantner, B.* ; Stadler, M.* ; Peters, A. ; Koenig, W.* ; Stöckl, A.* ; Dähnhardt, D.* ; Böger, C.A.* ; Krämer, B.K.* ; Fraedrich, G.* ; Strauch, K. ; Kronenberg, F.*

Lipoprotein (a) concentrations, apolipoprotein (a) phenotypes, and peripheral arterial disease in three independent cohorts.

Cardiovasc. Res. 103, 28-36 (2014)
Publ. Version/Full Text Volltext DOI PMC
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AIMS: The relevance of lipoprotein(a) [Lp(a)] concentrations and low-molecular-weight (LMW) apo(a) phenotypes in peripheral arterial disease (PAD) has only been investigated by few studies. Therefore, we analysed this association in three independent cohorts and performed a Mendelian Randomization approach using instrumental variable regression. METHODS AND RESULTS: Lp(a) concentrations, apo(a) phenotypes, and one SNP in the LPA gene (rs10455872) were measured in the CAVASIC study, including 241 male patients with intermittent claudication and 246 age- and diabetes-matched controls as well as in the two population-based studies KORA F3 (n = 3184) and KORA F4 (n = 3080). In KORA F3/F4, 109/80 persons suffered from intermittent claudication, 200/144 from PAD, and 128/103 showed an ankle-brachial index (ABI) <0.9. In CAVASIC, adjusted logistic regression analyses revealed significant associations between an increase of log-Lp(a) per one standard deviation (SD) (OR = 1.28, P = 0.02) as well as LMW apo(a) phenotypes and symptomatic PAD (OR = 1.65, P = 0.03). Linear regression models with continuous ABI showed a significant association in the combined analyses of KORA F3/F4: an increase in log-Lp(a) per one SD (β = -0.006, P = 0.005) and the presence of LMW apo(a) phenotypes (β = -0.011, P = 0.02) or the minor allele of rs10455872 (ß = -0.016, P = 0.03) were associated with a decrease in ABI in the fully adjusted linear and instrumental variable regression models. CONCLUSION: Analyses in three independent populations showed significant associations of Lp(a) concentrations, LMW apo(a) phenotypes, and rs10455872 with PAD. This points to a causal relationship between Lp(a) and PAD since the genetically determined apo(a) phenotypes and SNP alleles are indeed associated with PAD.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Ankle-brachial Index ; Apolipoprotein(a) Phenotypes ; Causality ; Lp(a) Concentrations ; Mendelian Randomization ; Peripheral Arterial Disease; Coronary-heart-disease; Ankle-brachial Index; Nutrition Examination Survey; Intermittent Claudication; Risk-factors; Vascular-disease; Follow-up; Systemic Atherosclerosis; National-health; Association
ISSN (print) / ISBN 0008-6363
e-ISSN 1755-3245
Journal Cardiovascular Research
Quellenangaben Volume: 103, Issue: 1, Pages: 28-36 Article Number: , Supplement: ,
Publisher Oxford University Press
Publishing Place Oxford
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Epidemiology II (EPI2)
Institute of Genetic Epidemiology (IGE)