Pim-1 : a new biomarker in pulmonary arterial hypertension

Authors: Renard, SébastienPaulin, RoxaneBreuils-Bonnet, SandraSimard, SergePibarot, PhilippeBonnet, SébastienProvencher, Steeve
Abstract: Provirus integration site for Moloney murine leukemia virus (Pim-1) is an oncoprotein overexpressed in lungs from pulmonary arterial hypertension (PAH) patients and involved in cell proliferation via the activation of the NFAT/STAT3 signaling pathway. We hypothesized that Pim-1 plasma levels would predict the presence of PAH and correlate with disease severity. Pim-1 plasma levels were measured at the time of catheterization in 49 PAH patients, including nonvasoreactive (n = 19) and vasoreactive idiopathic PAH (n = 5), and PAH related to connective tissue disease (n = 16) and congenital heart disease (n = 9). Fifty controls were also recruited. The capacity of Pim-1 to discriminate PAH from controls and its association with disease severity were assessed. Pim-1 plasma levels were higher in PAH than in controls (9.6 ± 4.0 vs. 7.2 ± 2.4 ng/mL, P < 0.01). Pim-1 appropriately discriminated proliferative PAH from controls (AUC = 0.78 to 0.94 using ROC curves). Among PAH patients, Pim-1 correlated with traditional markers of PAH severity. The 1-year survival was 97% and 47% for PAH patients with baseline Pim-1 levels lower and higher than 11.1 ng/mL, respectively (HR 11.4 (3.3–39.7); P <0.01). After adjustment for hemodynamic and biochemical variables, Pim-1 levels remained an independent predictor of mortality (P < 0.01). Pim-1 is a promising new biomarker in PAH.
Document Type: Article de recherche
Issue Date: 1 January 2013
Open Access Date: 28 June 2016
Document version: VoR
Permalink: http://hdl.handle.net/20.500.11794/7552
This document was published in: Pulmonary circulation, Vol. 3 (1), 74-84 (2013)
University of Chicago Press
Alternative version: 10.4103/2045-8932.109917
Collection:Articles publiés dans des revues avec comité de lecture

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