Anti-Inflammatory Agents, Non-Steroidal/pharmacology; Curcumin/pharmacology; Kidney Failure, Chronic/drug therapy; Nephritis/drug therapy; Angiotensin-Converting Enzyme Inhibitors/pharmacology; Animals; Blood Pressure/drug effects; Blood Urea Nitrogen; Cells, Cultured; Creatinine/blood; Disease Models, Animal; Enalapril/pharmacology; Hypertension, Renal/drug therapy; Hypertension, Renal/immunology; Kidney Failure, Chronic/immunology; Kidney Failure, Chronic/pathology; Macrophages/pathology; Mesangial Cells/cytology; Mesangial Cells/drug effects; Mesangial Cells/immunology; NF-kappa B/genetics; NF-kappa B/metabolism; Nephrectomy; Nephritis/immunology; Nephritis/pathology; PPAR gamma/genetics; PPAR gamma/metabolism; Proteinuria/drug therapy; Proteinuria/immunology; Proteinuria/pathology; Rats; Rats, Sprague-Dawley; Transfection; Tumor Necrosis Factor-alpha/genetics; Tumor Necrosis Factor-alpha/metabolism