Ventura, F; Antunes, H; Brito, C; Pardal, F; Pereira, T; Vieira, AP
Viana-Pereira, M; Lopes, JM; Little, S; Milanezi, F; Basto, D; Pardal, F; Jones, C; Reis, RM
Patients with malignant gliomas do not respond to any current therapy. Epidermal growth factor receptor (EGFR) controls several oncogenic processes, being frequently up-regulated in gliomas due to overexpression, gene amplification and gene mutation. EGFR inhibitors are being tried in gliomas, yet the molecular determinants of therapeutic response are unclear.
MATERIALS AND METHODS:
EGFR overexpression, EGFRvIII mutation and EGFR amplification were determined by immunohistochemistry and chromogenic in situ hybridization (CISH) in 27 primary glioblastomas (GBM), 24 anaplastic oligodendrogliomas (AO) and four anaplastic oligoastrocytomas (AOA).
EGFR overexpression was associated with EGFR amplification, being found in 48% and 53% GBM, 33% and 40% AO and 75%...
Antunes, H; Rodrigues, H; Silva, N; Ferreira, C; Carvalho, F; Ramalho, H; Gonçalves, A; Branca, F
BACKGROUND: In 2006, bronchiolitis due to adenovirus nosocomial infections resulted in the closure of a pediatric department in northern Portugal.
OBJECTIVES: To determine the etiology of bronchiolitis in northern Portugal.
STUDY DESIGN: It was a prospective multicenter study on the etiology of bronchiolitis during the respiratory syncytial virus (RSV) season (November-April). Children < or = 24 months of age admitted for a first wheezing episode were included. Nasopharyngeal specimens were analyzed by an indirect immunofluorescent-antibody assay (IFA) for RSV, adenovirus (HAdV), parainfluenza (PIV) 1-3 and influenza (IV) A and B and by polymerase chain reaction (PCR) or reverse transcription-PCR for the same...