RESUMO
Introduction Non-androgenic growth factors are involved in the growth regulation of prostate cancer (PCa). Objective This is the first Brazilian study to correlate, in a population of patients operated for PCa, PSA, total testosterone, insulin-like growth factor-I (IGF-I) and insulin-like growth factor-binding protein-3 (IGFBP-3) with Gleason score and to compare with a control group with benign prostate hyperplasia (BPH). Materials and Methods This retrospective single-center study included 49 men with previously diagnosed PCa and 45 with previously diagnosed BPH. PSA, testosterone, IGF-I, IGFBP-3 were determined in both groups. Results PSA and IGFBP-3 levels were significantly higher in the PCa group as compared to the BPH group (p<0.001 and p=0.004, respectively). There was a significant difference when we compared the PSA before surgery (p<0.001) and at the inclusion in the study (p<0.001) and IGFBP3 (0.016) among patients with Gleason <7, ≥7 and BPH. In the PCa group, PSA, testosterone, IGF-I and IGFBP-3 levels were comparable between Gleason <7 and ≥7. Conclusions Our data suggest that in localized PCa, the quantification of PSA and, not of IGF-1, may provide independent significant information in the aggressiveness. IGFBP-3 could be a biochemical marker of disease control in PCa patients. .
Assuntos
Animais , Feminino , Humanos , Masculino , Camundongos , Gravidez , Poluentes Atmosféricos/toxicidade , Diferenciação Celular/efeitos dos fármacos , Transtorno Depressivo/fisiopatologia , Nanopartículas/toxicidade , Efeitos Tardios da Exposição Pré-Natal/fisiopatologia , Animais Recém-Nascidos , Western Blotting , Células Cultivadas , Cidades , Transtorno Depressivo/etiologia , Hipocampo/metabolismo , Proteínas Quinases JNK Ativadas por Mitógeno/metabolismo , Aprendizagem em Labirinto/efeitos dos fármacos , Neuritos/efeitos dos fármacos , Neuritos/fisiologia , Neurônios/citologia , Neurônios/efeitos dos fármacos , Projetos Piloto , Material Particulado/toxicidade , Efeitos Tardios da Exposição Pré-Natal/etiologiaRESUMO
Migration of neurons from their site of origin to their final destination is a critical and universal step in the formation of the complex structure of the nervous system. The migratory process is thought to be governed in part by genetically and epigenetically defined sequences of signals which are interpreted by migrating cells. The molecular mechanisms that underlie neuronal migration have been the subject of intense investigation. As in other developmental processes, many molecules must participate in neuronal migration. Some molecules, such as cell adhesion molecules and motor proteins, may contribute to discrete steps in the migration act; others, like extracellular signaling molecules, may regulate the activation and/or termination of the migration program. In this article we review findings from our group that demonstrate the functional role(s) of a specific glycolipid in neuronal migration and neurite outgrowth in the developing and adult nervous system