title: The effects of cholecalciferol treatment on mineral metabolism and inflammation markers in Turkish hemodialysis patients.
abstract: OBJECTIVE
  To evaluate the effects of 25-hydroxycholecalciferol 25-[OH] D on bone mineral metabolism and inflammation parameters in hemodialysis patients.
  
  
  METHODS
  The study was carried out at Hitit University Corum Education and Research Hospital, Corum, Turkey between July and September 2012. All of the 36 patients that underwent treatment in our hemodialysis unit were included in this study. Four patients were excluded from the study due to other complications. Of the remaining 32 patients, 28 patients mean age; 52+/- 18 years; 15 males and 13 females with a 25-OH vitamin D level of <30 ng/mL were included in the study. Four of the 32 remaining patients were excluded as their 25-OH vitamin D levels was >30 ng/ml. Patients with a 25-OH D level of <30 ng/mL were treated with 20,000 IU oral cholecalciferol once a week for 12 weeks. The level of vitamin D, mineral metabolism markers, and C-reactive protein CRP were evaluated.
  
  
  RESULTS
  After the treatment, the 25-OH D levels increased to >30 ng/mL in all patients 12.5+/-7.1 ng/mL versus 59.9+/-15.5 ng/mL; p<0.001. While there was a significant, but not life-threatening, increase in calcium levels 7.9 [7.26 to 8.32] mg/dL versus 8.48 [7.55 to 9.25] mg/dL, p<0.001, a statistically significant decrease was observed in CRP levels 9.34+/-4.4mg/L versus 4.4+/-1.6mg/L; p<0.001. Alkaline phosphatase, phosphorus, and parathyroid hormone levels did not change.
  
  
  CONCLUSIONS
  Vitamin D deficiency is a common problem in HD patients. Short-term weekly cholecalciferol treatment is safe and effective in this patient group, and cholecalciferol treatment had a positive effect on inflammatory markers.
authors.affiliation: Department of Nephrology, Division of Nephrology, Hitit University Corum Education and Research Hospital, Corum, Turkey. dr.s.guvenir@hotmail.com
authors.forename: Sultan
authors.initials: S
authors.lastname: Ozkurt
authors.forename: Ahmet
authors.initials: A
authors.lastname: Musmul
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood*; D002762:Cholecalciferol / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007249:Inflammation / Q000097:blood*; D008297:Male; D008875:Middle Aged; D008903:Minerals / Q000378:metabolism*; D006435:Renal Dialysis; D014421:Turkey; D014808:Vitamin D Deficiency / Q000188:drug therapy
chemical_list: D015415:Biomarkers; D008903:Minerals; D002762:Cholecalciferol