Expression analysis of angiogenic growth factors and biological axis CXCL12/CXCR4 axis in idiopathic pulmonary fibrosis.

Abstract:

:Idiopathic pulmonary fibrosis (IPF) is associated with aberrant repair, persistence of collagen deposition, and the development of vascular remodeling. However, the role of angiogenesis in the pathogenesis of IPF is still undetermined. The aim of this study was to evaluate the combined mRNA expression of vascular endothelial growth factor A (VEGFA), fibroblast growth factor 2 (FGF2), insulin-like growth factor 1 (IGF1) epidermal growth factor (EGF), and its receptor (EGFR) in lung tissue obtained from IPF patients. We have also investigated the expression of chemokine CXCL12/stromal cell-derived factor-1 (SDF-1) and its receptor, CXCR4, to identify alterations that maybe implicated in the pathogenesis of IPF. The subjects studied consisted of two distinct groups: patients with IPF (n = 25) and subjects (control) undergoing thoracic surgery for reasons other than interstitial lung disease (n = 10). Expression analysis of the aforementioned growth factors and biological axis CXCL12/CXR4 analysis were performed using real-time RT-PCR. IGF-1, EGF, and FGF2 mRNA levels are significantly decreased in the patients compared to the controls (p = 0.028, p = 0.023 and p = 0.009, respectively). SDF1-TR1 and SDF1-TR2 transcript levels were significantly lower in patients compared to controls (p = 0.017 and p = 0.001). Significant coexpression of VEGF mRNA with IGF mRNA was observed in the group of the patients (p = 0.017). An additional coexpression of VEGF mRNA with SDF1-TR1 mRNA was demonstrated(p = 0.030). Our results show a downregulation in angiogenetic mechanisms in IPF. However, our results should be further verified by measuring other angiogenetic pathways in more samples.

journal_name

Connect Tissue Res

authors

Antoniou KM,Soufla G,Lymbouridou R,Economidou F,Lasithiotaki I,Manousakis M,Drositis I,Spandidos DA,Siafakas NM

doi

10.3109/03008200903056150

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

71-80

issue

1

eissn

0300-8207

issn

1607-8438

journal_volume

51

pub_type

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