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Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
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Role of Skin in Vitamin D Synthesis

The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
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Connective Tissue Cell Types

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Role of Vitamins in Maintaining Bone Health01:25

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A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
10:46

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Vitamin D in African Americans with multiple sclerosis.

J M Gelfand1, B A C Cree, J McElroy

  • 1Department of Neurology, UCSF Multiple Sclerosis Center, San Francisco, CA, USA.

Neurology
|May 25, 2011
PubMed
Summary

Vitamin D levels were lower in African Americans with multiple sclerosis (MS), but this was mainly due to climate and geography, not disease severity. Ancestry also influenced vitamin D status.

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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
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09:41

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Area of Science:

  • Neurology
  • Immunology
  • Nutritional Science

Background:

  • Multiple Sclerosis (MS) is a chronic neurological disease.
  • Vitamin D deficiency is common and may play a role in MS.
  • Research on vitamin D and MS in African Americans is limited.

Purpose of the Study:

  • To investigate the association between vitamin D status and MS in African Americans.
  • To examine the relationship between vitamin D levels and MS disease severity.

Main Methods:

  • Cross-sectional study comparing serum 25-hydroxyvitamin D in 339 African Americans with MS and 342 controls.
  • Assessed disease severity using the Multiple Sclerosis Severity Score (MSSS).
  • Analyzed correlations between vitamin D, MS status, MSSS, and genetic ancestry.

Main Results:

  • Higher prevalence of vitamin D deficiency and insufficiency in both MS patients and controls.
  • Lower median vitamin D levels in the MS group, primarily explained by latitude and UV index.
  • No significant association found between vitamin D status and MS disease severity (MSSS).
  • Greater European genetic ancestry correlated positively with vitamin D levels.

Conclusions:

  • Lower vitamin D levels in African Americans with MS compared to controls are largely attributed to environmental factors.
  • Vitamin D status does not appear to be associated with MS disease severity in this population.
  • Climate, geography, and genetic ancestry are important determinants of vitamin D status in African Americans with MS.