The investigators registered the study 'The effect of renin angiotensin system Blockage (RAS), calcium channel blocker and combined drugs on TWEAK, PTX3 and FMD levels in Diabetic Proteinuric Patients with Hypertension' (ClinicalTrials.gov Identifier:NCT00921570). The investigators will use the samples of the some patients for this study. The investigators also registered the study 'FGF-23 and Endothelial Dysfunction in Diabetic Proteinuric Patients' (ClinicalTrials.gov Identifier: NCT01703234). The investigators will combine these two registered studies (NCT00921570 and NCT01703234) in one study.