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:: Volume 5, Issue 3 (5-2014) ::
Caspian J Intern Med 2014, 5(3): 148-155 Back to browse issues page
25(OH) vitamin D serum values and rheumatoid arthritis disease activity (DAS28ESR)
Maryam Sahebari , Zahra Mirfeizi , Zahra Rezaieyazdi , Houshang Rafatpanah , Ladan Goshyeshi
MD Mashhad University of Medical Sceinces
Abstract:   (5428 Views)
Background: The role of vitamin D in the pathogenesis of rheumatoid arthritis is under investigation. This study was designed to evaluate the correlation between serum values of 25(OH) vitamin D [25(OH)D] and disease activity in rheumatoid arthritis (RA) patients according to Disease Activity Score 28 joints and ESR (DAS28ESR). Methods: Ninety-nine patients according to ACR classification criteria for RA and 68 healthy controls were included in this study. The participants with known confounding risk factors affecting serum values of 25(OH)D were excluded. All patients were under treatment with supplementary calcium carbonate (1500 mg), 25(OH)D (800U), and Hydroxychloroquine (6mg/kg). The control group was mostly recruited from patients’ relatives who lived with them to minimize the impact of diverse lifestyles on 25(OH)D status. Disease activity was assessed by DAS28ESR. Serum concentrations of 25(OH)D were measured. Serum values of 25(OH)D less than 50 nmol/L were considered 25(OH)D deficiency. Results: The mean 25(OH)D serum values were 83.74±46.45 nmol/L in patients and 46.53±34.07 nmol/L in controls. After adjustment for age, sex and BMI, multivariate analysis showed no correlation between 25(OH)D serum levels and DAS in RA (P=0.29, rp=0.11). However, 25(OH)D serum values were significantly lower in patients with early diagnosed RA (p=0.012) compared with the other patients. In the early diagnosed patients, 25(OH)D and anti-CCP serum values negatively correlated (p=0.04,rs=-0.5). Conclusion: This study showed that there was no correlation between 25(OH)D serum values and DAS over a short duration of disease course. However, in early RA, 25(OH) D serum values were lower than the established RA. Treatment with physiological doses of 25(OH) D kept the mean serum values of 25(OH)D sufficient in RA patients.
Keywords: 25(OH) D, vitamin D, Rheumatoid Arthritis, RA, DAS 28 (ESR).
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Type of Study: Original Article | Subject: Internal
Received: 2014/05/31 | Accepted: 2014/05/31 | Published: 2014/05/31
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Sahebari M, Mirfeizi Z, Rezaieyazdi Z, Rafatpanah H, Goshyeshi L. 25(OH) vitamin D serum values and rheumatoid arthritis disease activity (DAS28ESR). Caspian J Intern Med. 2014; 5 (3) :148-155
URL: http://caspjim.com/article-1-323-en.html


Volume 5, Issue 3 (5-2014) Back to browse issues page
Caspian Journal of Internal Medicine
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