Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-25 @ 2:47 AM
Ignite Modification Date:
2025-12-25 @ 2:47 AM
NCT ID:
NCT02096133
Brief Summary:
Patients with multiple sclerosis (MS) have an increased risk of developing a major depression. The investigators observed a protective effect of high vitamin D levels on the risk of depression in MS. This might be driven by the effect of vitamin D on the stress-axis. Therefore, the main goal of the present study is to assess whether high dose vitamin D supplementation results in a suppression of the stress-axis, as measured by decreased levels of cortisol.
Detailed Description:
The lifetime incidence of a major depression in Multiple Sclerosis (MS) is 50%. (Patten et al. Neurology 2003; 61(11):1524-7) Our group reported a negative correlation between vitamin D status and depression score of the Hospital Anxiety and Depression Scale (HADS) in a cross-sectional dataset of Dutch MS patients. (Knippenberg et al. Acta Neurol Scand 2011; 124(3):171-5) This suggests an interaction between vitamin D and biological mechanisms affecting susceptibility to depression. Currently, we have two main hypotheses: 1) Vitamin D regulates the hypothalamic stress axis in MS. Based on our findings that cortisol releasing hormone (CRH)-positive hypothalamic neurons in the brains of MS patients stained positive for the vitamin D receptor (VDR) and 1,25(OH)2D-24-hydroxylase (24-OHase). (smolders et al. J Neuropathol Exp Neurol 2013;72(2):91-105) 2) Vitamin D affects T cell cytokine profile and hereby the odds of developing depression. Also in non-MS depressed patients increased levels of pro-inflammatory cytokines are detected (Maes et al. Metab Brain Dis 2009; 24: 27-53). Vitamin D3 has shown to be a potent promotor of T cell regulation both in vitro and in vivo. (Smolders et al. J Neuroimmunol 2008;194:7-17 and Smolders et al. PLoS One 2010;5:e15235) The main goal of this study is to assess whether supplementation of high doses vitamin D3 results in a suppression of saliva cortisol day-curves in subjects with multiple sclerosis, and we will explore whether the pro-inflammatory cytokine profile of T lymphocytes is regulated.
Study:
NCT02096133
Study Brief:
Protocol Section:
NCT02096133