ABSTRACT
Dysregulation of Met signaling has been implicated in the initiation, progression and metastasis of human cancers, and therefore represents an attractive target for anticancer drug development. Met is overexpressed in non-small-cell lung cancer and its lack of staining in normal lung tissue makes it an attractive target. To date, erlotinib and gefitinib have established themselves as first-line therapy for non-small-cell lung cancer patients whose tumors harbor an EGF receptor gene mutation, and hence, it is crucial that we identify mechanisms of resistance that could be targeted by novel agents, while keeping an acceptable toxicity profile at the same time; something very important when we develop these new drugs. Inhibitors of the Met pathway represent a therapeutic alternative in this setting. In this review, we discuss the early clinical studies reported using two Met inhibitors, a monoclonal antibody (MetMAb) and a small molecule tyrosine kinase inhibitor (MGCD265).
Subject(s)
Carcinoma, Non-Small-Cell Lung/metabolism , Lung Neoplasms/metabolism , Proto-Oncogene Proteins c-met/drug effects , Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Biomarkers, Tumor/metabolism , Carcinoma, Non-Small-Cell Lung/drug therapy , Carcinoma, Non-Small-Cell Lung/pathology , Humans , Lung Neoplasms/drug therapy , Lung Neoplasms/pathologyABSTRACT
Objetivo: Comparar la sensibilidad de la biopsia gástrica en la detección de Helicobacter pylori (Hp) en pacientes que recibieron inhibidores de la bomba de protones (IBP) entre 7 y 14 días previos a la endoscopía digestiva alta y los que recibieron medicación diferente a IBP o no usaron medicación. Material y métodos: Estudio tipo serie de casos comparativo. Se incluyeron pacientes con dispepsia sometidos a endoscopía digestiva alta y biopsia gástrica en el Servicio de Gastroenterología del Hospital Nacional Cayetano Heredia entre noviembre 2008 y enero 2009, que habían recibido IBP entre 7 y 14 días. Se excluyeron pacientes con cáncer gástrico, cirugía previa, que se encontraban en terapia antibiótica o con salicilato de bismuto en las 4 semanas previas. Se tomaron dos biopsias en cuerpo y dos en antro. Se utilizó el programa STATA 10 para el análisis. Resultados: Se estudiaron 80 pacientes; 38 (47,5%) recibieron IBP. El 64,29% (27/42) de los que no tomaron IBP fueron Hp (+) y el 65,79% (23/38) de los que tomaron IBP (p=0,90). Conclusiones: La proporción de resultados positivos para Hp fue similar en los pacientes que tomaron IBP entre 7 y 14 días y los que no recibieron IBP.
Objective: To evaluate the sensitivity of gastric biopsy in detecting Helycobacter pylori (Hp) infection among patients who received proton pump inhibitors (PPI) 7-14 days before endoscopy compared to those who did not received PPI or who received a different medication. Methods: Case series. Patients with dyspepsia who undergo upper endoscopy and biopsy from November 2008 to January 2009 were included if they had received PPI 7-14 days before the procedure. Patients with gastric cancer, prior surgery and those who had received antibiotics or bismuth subsalicylate were excluded. Two biopsies of the main gastric body and atrum were taken. The STATA software was used for the analysis. Results: 80 patients were studied; 38 (47.5%) received PPI. 64.29% (27/42) of those who did not received PPI were Hp positive vs. 65.79% (23/38) in patients who received PPIs (p=0.90). Conclusions: Hp rate was similar irrespective of PPI use.
