title: Effect of vitamin D on proteinuria in type 2 diabetic patients.
abstract: BACKGROUND
  Vitamin D (Vit D) deficiency is a common disorder in diabetic patients and may be a risk factor for ischemic heart disease and exacerbation of diabetic nephropathy(DN).
  
  
  OBJECTIVE
  The aim of this study was to evaluate the effect of Vit D3 therapy on protein uriain type 2 diabetic patients with deficient or insufficient serum Vit D.
  
  
  METHODS
  In a double blind clinical trial, 60 type 2 diabetic patients with proteinuria greater than 150 mg/day who had Vit D deficiency or insufficiency were randomly enrolled in two equal groups. Pearl of Vit D as 50 000 IU/week and placebo (1 tablet per week) were prescribed in patients of case and control groups respectively for 8 weeks. At the beginning and 2 months later, 24 hours urine protein was checked in all patients.
  
  
  RESULTS
  There is no difference between serums Vit D level in case and control group at the beginning of the study, however at the end of the study serum Vit D level was significantly higher in the case group. There is no difference in proteinuria between case and control group at the beginning and the end of the study, while a significant difference between the changes of proteinuria before and after the study was seen in two groups (P= 0.028).
  
  
  CONCLUSIONS
  Vit D deficiency may exacerbate protein uric and DN, hence correction of Vit D deficiency may decrease proteinuria in diabetic patients with nephropathy.
authors.affiliation: Department of Internal Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Momeni
authors.affiliation: Department of Internal Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran.
authors.forename: Mahmood
authors.initials: M
authors.lastname: Mirhosseini
authors.affiliation: Department of Internal Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Kabiri
authors.affiliation: Social Health Determinants Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran.
authors.forename: Soleiman
authors.initials: S
authors.lastname: Kheiri
keywords: Diabetes mellitus; Diabetic nephropathy; Proteinuria; Vitamin D