PT - JOURNAL ARTICLE AU - Gabriel Cezar dos Santos AU - Edwin Roger Parra AU - Felipe Weisshaupt Stegun AU - Cinthya Cirqueira AU - Maria Irma Duarte AU - Vera Capelozzi TI - Viral infection immunodetection reinforce the possible viral participation in the pulmonary fibrosis disease DP - 2012 Sep 01 TA - European Respiratory Journal PG - P3660 VI - 40 IP - Suppl 56 4099 - http://erj.ersjournals.com/content/40/Suppl_56/P3660.short 4100 - http://erj.ersjournals.com/content/40/Suppl_56/P3660.full SO - Eur Respir J2012 Sep 01; 40 AB - Background: The elusive nature of the cause of most diffuse lung diseases has led many to postulate an infectious etiology. In this regards, the aim of this study was investigate the presence or absence of virus infections in patients with pulmonary fibrosis disease.Methods: The study sample comprised 38 patients with open lung biopsies, 13 patients with IPF/UIP; 8 with NSIP/NSIP; 13 with AIP/DAD and 4 with ICLF/CLF. The clinical/radiology and histological diagnosis was according with the 2001 ATS/ERS consensus. Microarray samples was analyzing by immunohistochymistry for measles virus (MV), cytomegalovirus (CMV), hepatitis-C virus (HCV), adenovirus (ADV), respiratory syncytial virus (RSV), Epstein-Barr virus (EBV), herpes I and II viruses (HVI and HVII). We also correlated sex, age, AIDS and immunosuppression therapy.Results: We detected by immunohistochemistry the epithelial alveolar infection of MV and CMV in 30.8% and 15.4% in DAD pattern, respectively. Endothelial CMV infection was observed in 25% of CLF pattern. When we divided the age in two groups' patients with ≤ of 43 years old and ≥ of 72 years old, the first group had more infection of MV, CMV than the second group. The Spearman's correlation showed a positive correlation between epithelial and endothelial CMV infection and AIDS (r=0.472; p=0.003).Conclusion: The epithelial and endothelial viral infections observed in these diseases reinforce the possible viral participation in the pulmonary fibrosis disease. These findings are particularly relevant given the increased interest in the epithelial injury and repair as it relates to the pathogenesis of many diffuse lung diseases.Financial Support: FAPESP, CNPq.