| Outcome Measures: |
Primary: Oxidative stress and inflammative parameters in patients wiht CKD stage Vitamin D after 12 weeks of treatment, Measure parameter: IL-2, 12 weeks of treatment wiht visits and analysis|Oxidative stress and inflammative parameters, Measure unit: IL-4, 12 weeks of treatment|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, IL-5, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, IL-6, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, IL-10, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, IL-13, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, TNF-beta, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD3, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD4, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD8, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD19, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD25, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD56, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD69, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, CD95, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, COX-2, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, iNOS, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, PGE2, 12 weeks of treatment with visits and analysis|Oxidative stress and inflammative parameters in patients with CKD stage vitamin D after 12 weeks of treatment, FGF-23, 12 weeks of treatment with visits and analysis | Secondary: Nutritional Parameters, Weight, 12 weeks of treatment with visits and analysis|Erythropoietin requirements variations, Fe, 12 weeks of treatment with visits and analysis|Assess potential benefits inflammatory markers, PTHi, 12 weeks of treatment with visits and analysis|Nutritional Parameters, Height, 12 weeks of treatment with visits and analysis|Nutritional Parameters, Body Mass Index (BMI), 12 weeks of treatment with visits and analysis|Nutritional Parameters, Abdominal circumference, 12 weeks of treatment with visits and analysis|Nutritional Parameters, Triceps skin fold circumference, 12 weeks of treatment with visits and analysis|Nutritional Parameters, Bioimpedance, 12 weeks of treatment with visits and analysis|Anaemia parameters, Hemogram, 12 weeks of treatment|Anaemia Parameters, Biochemistry, 12 weeks of treatment|Erythropoietin requirement variations, Ferritin, 12 weeks of treatment with visits and analysis|Erythropoietin requirement variations, Transferrin saturation index, 12 weeks of treatment with visits and analysis|Erythropoietin requirements variations, B12, 12 weeks of treatment with visits and analysis|Erythropoietin requirements variations, Folic Acid, 12 weeks of treatment with visits and analysis|Assess potential benefits in inflammatory markers, Kt, 16 weeks, the complete duration of the study
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