Transforming growth factor β1 and its receptors gene expression in patients with systemic sclerosis and Raynaud’s phenomenon
Journal Title: Postępy Nauk Medycznych - Year 2012, Vol 25, Issue 10
Abstract
<b>Introduction.</b> Previous studies concerning the tissue expression of TGFβ1 demonstrated that this factor may play the role in the pathogenesis of systemic sclerosis (SSc).<br><b>Aim.</b> To examine the change in the number of mRNA copies of genes coding TGFβ1 and its receptors in peripheral blood leucocytes in patients with SSc and RP.<br><b>Material and methods.</b> The research concerned 19 patients with SSc, 8 patients with RP and 8 healthy persons constituting the control group. Quantification of TGFβ1, TGFβRI, TGFβRII, TGFβRIII genes mRNA was carried out with the use of Quantitative Real-Time Reverse Transcription Polymerase Chain Reaction.<br><b>Results.</b> The number of copies of TGFβ1 mRNA was significantly higher in patients with SSc than in the group of patients with RP. In both groups the TGFβ1 mRNA level was significantly lower than in control group. No significant differences were found between SSc and RP patients when mRNAs of genes coding TGFβ1 receptors were analyzed. The TGFβ1/TGFβRI mRNA and the TGFβRIII/TGFβRI mRNA ratios were significantly higher in patients with SSc than in RP patients. In the group of patients with systemic sclerosis and in control group the number of copies of TGFβ1 mRNA correlated with the number of copies of TGFβRIII mRNA. In control group TGFβRI mRNA and TGFβRII mRNA correlated positively (both of them were increasing), while in both groups of patients this correlation was negative, what means that one parameter was increasing when the second one was decreasing.<br><b>Conclusions.</b> Disregulation TGFβ1 and its receptors gene expression in SSc and RP may translate to changes in the activity of TGFβ1 which may result in the initiation of the inflammatory process and later fibrosis.
Authors and Affiliations
Anna Lis-Święty, Joanna Gola, Urszula Mazurek, Ligia Brzezińska-Wcisło
Keywords
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