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http://purl.uniprot.org/citations/20148724http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
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Background

Pregnancy-associated plasma protein-A (PAPP-A) has been associated with peripheral artery disease (PAD). The aim of this study was to evaluate the utility of PAPP-A as a marker for long-term mortality in patients with atherosclerotic PAD.

Methods

PAPP-A serum concentrations were measured using an enzymatically amplified two-step sandwich-type immunoassay in 487 consecutive patients admitted to a tertiary care hospital with symptomatic PAD. The main outcome measure was all-cause mortality at 5 years.

Results

During follow-up, 114 patients died and 373 survived. The median PAPP-A concentration was higher among decedents compared with survivors (0.96 vs. 0.78 mU/L, p=0.024). The area under the receiver operating characteristic curve for the prediction of 5-year mortality by PAPP-A was 0.57 [95% confidence interval (CI), 0.53-0.61; p=0.026]. Survival probability was not significantly associated with PAPP-A concentrations using Kaplan-Meier curve analysis. However, univariate Cox proportional-hazards regression analysis revealed that PAPP-A was associated with 5-year mortality [risk ratio 1.25; 95% CI, 1.05-1.50; p=0.013 per one standard deviation (SD) increase in log transformed values]. In the multivariate model using a bootstrapping method, the predictive value of PAPP-A remained significant (risk ratio 1.31; 95% CI, 1.01-1.73; p=0.024 per 1 SD increase in log transformed values), even after adjustment for clinical confounders and other biomarkers, such as high-sensitivity C-reactive protein and amino terminal pro-B-type natriuretic peptide.

Conclusions

In this study, PAPP-A was an independent predictor of 5-year all-cause mortality in patients with symptomatic PAD. However, based on the weak association between PAPP-A and outcome in our cohort, we consider PAPP-A measurements to not be useful in clinical practice for prognostic purposes in patients with PAD."xsd:string
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http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/author"Mueller T."xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/author"Dieplinger B."xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/author"Haltmayer M."xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/author"Poelz W."xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/author"Forstner T."xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/date"2010"xsd:gYear
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/name"Clin Chem Lab Med"xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/pages"537-542"xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/title"Pregnancy-associated plasma protein-A as a marker for long-term mortality in patients with peripheral atherosclerosis: inconclusive findings from the Linz Peripheral Arterial Disease (LIPAD) study."xsd:string
http://purl.uniprot.org/citations/20148724http://purl.uniprot.org/core/volume"48"xsd:string
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