Assuntos
Angiomiolipoma/diagnóstico por imagem , Neoplasias Renais/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Angiomiolipoma/patologia , Angiomiolipoma/cirurgia , Meios de Contraste , Feminino , Humanos , Achados Incidentais , Neoplasias Renais/patologia , Neoplasias Renais/cirurgia , Pessoa de Meia-IdadeAssuntos
Carcinoma de Células Renais/patologia , Neoplasias Renais/patologia , Neoplasias Primárias Múltiplas/patologia , Idoso , Carcinoma de Células Renais/diagnóstico por imagem , Carcinoma de Células Renais/cirurgia , Humanos , Achados Incidentais , Neoplasias Renais/diagnóstico por imagem , Neoplasias Renais/cirurgia , Masculino , Neoplasias Primárias Múltiplas/diagnóstico por imagem , Neoplasias Primárias Múltiplas/cirurgia , Nefrectomia , Tomografia Computadorizada por Raios XRESUMO
Radiocontrast media can induce vascular endothelial cell apoptosis. Apoptotic damage to the vascular endothelium is an important mechanism in vascular disease. Several growth factors with anti-apoptotic effects may help protect the vascular endothelium from apoptosis. The present study evaluated whether the radiocontrast agent iopromide induces apoptosis in human umbilical vein endothelial cells and also whether angiopoietin-1 (Ang1) protects against iopromide-induced apoptosis through the p70 S6 kinase-dependent signaling pathway. Iopromide induced apoptosis in vascular endothelial cells in a dose-dependent manner. Ang1 reduced iopromide-induced apoptosis in a dose-dependent manner. Wortmannin and LY294002, phosphatidylinositol 3'-kinase inhibitors, decreased the Ang1-induced anti-apoptotic effect. Ang1 mediates the activation of mTOR/ribosomal protein p70 S6 kinase through phosphatidylinositol-3' kinase. Wortmannin and rapamycin, an inhibitor of mTOR, suppressed Ang1-induced p70 S6 kinase phosphorylation and partially inhibited the Ang1-induced anti-apoptotic effect. These results suggest that Ang1 may protect vascular endothelial cells from iopromide-induced apoptosis through phosphatidylinositol 3'-kinase and mTOR/S6 kinase. Pretreatment with Ang1 could help maintain normal vascular endothelial cell integrity before and during systemic radiocontrast administration.
Assuntos
Angiopoietina-1/metabolismo , Apoptose/efeitos dos fármacos , Meios de Contraste/farmacologia , Células Endoteliais/efeitos dos fármacos , Iohexol/análogos & derivados , Proteínas Quinases S6 Ribossômicas 70-kDa/metabolismo , Análise de Variância , Angiopoietina-1/farmacologia , Animais , Bovinos , Técnicas de Cultura de Células , Células Cultivadas , Relação Dose-Resposta a Droga , Células Endoteliais/citologia , Endotélio Vascular/citologia , Ativação Enzimática/efeitos dos fármacos , Humanos , Iohexol/farmacologia , Manitol/farmacologia , Fosfatidilinositol 3-Quinases/metabolismo , Fatores de Tempo , Veias Umbilicais/citologiaRESUMO
This case demonstrates continuous ambulatory peritoneal dialysis-related endometrial tissue migration and occurrence of huge cystic endometriosis by the recovery of menstrual period after kidney transplantation.