Etemadifar M, Abtahi SH, Razmjoo H, Abtahi MA, Dehghani A, Salari M, Maghzi AH, Akbari M. 25-hydroxyvitamin D Concentrations in Patients with Optic Neuritis as a Clinically Isolated Syndrome and Healthy Controls.
Int J Prev Med 2012;
3:313-7. [PMID:
22708027 PMCID:
PMC3372073]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 11/21/2011] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES
The onset of multiple sclerosis in the majority of the cases occurs as a clinically isolated syndrome (CIS). We sought to assess serum levels of 25-hydroxyvitamin D (25-OHD) in CIS patients and healthy controls.
METHODS
In this cross-sectional study 40 patients (36 women and 4 men) with CIS manifesting as a single isolated optic neuritis and 40 Age- and sex-matched healthy controls (35 women and 5 men) were enrolled between late October 2010 and early March 2011. General vitamin D deficiency was defined as serum 25-OHD levels of lower than 20 ng/ml and was classified as mild (15 < 25-OHD <20 ng/ml), moderate (8 < 25-OHD <15 ng/ml), and severe (25-OHD <8 ng/ml).
RESULTS
We found no difference in the median interquartile range [IQR] between CIS patients and controls (17.95 [10.40-29.13] vs. 17.00 [12.25-31.00]; P=0.57). However, when stratified by the levels of deficiency, among CIS patients a significantly higher proportion had severe vitamin D deficiency in comparison to healthy controls (20% vs. 2.5%; P=0.034). Nevertheless, the frequency of general (62.5% vs. 60%, P=0.82), mild (25% vs. 30%, P=0.80), and moderate (17.5% vs. 27.5%, P=0.42) vitamin D deficiency were not different between the two groups.
CONCLUSIONS
Our findings do not indicate any significant difference of serum 25-OHD between CIS patients and healthy controls. However, in our series severe vitamin D deficiency was more frequent among CIS patients.
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