title: [Quantifying plasma levels of transforming growth factor beta1 in idiopathic pulmonary fibrosis].
abstract: OBJECTIVE
  Transforming growth factor ss1 (TGF-ss1) is one of the key profibrotic mediators in the pathogenesis of idiopathic pulmonary fibrosis (IPF). The purpose of this study was to investigate the prognostic value of quantifying TGF-ss1 levels in patients with IPF.
  
  
  METHODS
  We conducted a prospective study of 29 IPF patients and 27 healthy controls. Enzyme-linked immunosorbent assays were used to quantify TGF-ss1 levels.
  
  
  RESULTS
  Mean (SD) TGF-ss1 levels were significantly higher in the IPF patients than in the control subjects (11.1 [7.5] ng/mL vs 4 [2.4] ng/mL; P< .01). Weak inverse correlations were observed between TGF-ss1 levels and both forced vital capacity and total lung capacity. Thirteen IPF patients were evaluated at 8 (1.2) months (range, 5-9 months). The mean TGF-ss1 level was 18.2 (15) ng/mL and there were no significant differences with respect to the initial measurement of 11.1 (7.5) ng/mL. No correlation was observed between changes in respiratory function and changes in TGF-ss1 levels.
  
  
  CONCLUSIONS
  Although plasma levels of TGF-beta1 were high in the patients with IPF, they do not appear to be a useful prognostic marker of disease activity or therapeutic response.
authors.affiliation: Servicio de Neumología, Hospital Clínic, IDIBAPS, Universidad de Barcelona, Barcelona, España. mariamolinamolina@hotmail.com
authors.forename: María
authors.initials: M
authors.lastname: Molina-Molina
authors.forename: Sergio
authors.initials: S
authors.lastname: Lario
authors.forename: Patricio
authors.initials: P
authors.lastname: Luburich
authors.forename: José
authors.initials: J
authors.lastname: Ramírez
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Carrión
authors.forename: Antoni
authors.initials: A
authors.lastname: Xaubet
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D011379:Prognosis; D011446:Prospective Studies; D011658:Pulmonary Fibrosis / Q000097:blood*; D053773:Transforming Growth Factor beta1 / Q000097:blood*
chemical_list: D053773:Transforming Growth Factor beta1