Vitamin D and Connective Tissue Diseases
Overview
Pathology
Affiliations
Objective And Design: Recently, many studies have shown that the biologically active form of vitamin D-1,25(OH) D-is involved in many biological processes, including immune system modulation, and patients affected by various autoimmune diseases, such as connective tissue diseases (CTD), showed low levels of vitamin D. It is not clear if vitamin D deficiency is involved in the pathogenesis of autoimmune diseases or it is a consequence.
Material: We carried out a review of literature to summarize the existing connections between 25-OH vitamin D and CTD.
Methods: We searched for articles on PubMed by keywords: vitamin D, connective tissue diseases, systemic lupus erythematosus, Sjogren's syndrome, systemic sclerosis, undifferentiated connective tissue disease.
Results: The relationship between vitamin D and CTD is still not very clear, despite many studies having been performed and some data suggest a connection between these diseases and 25-OH vitamin D levels.
Conclusions: The limitations of the study, such as the heterogeneity of patients, methods used to measure vitamin D serum concentration and other biases, do not lead to unequivocal results to demonstrate a direct link between low vitamin D serum levels and autoimmune diseases. Further studies are needed to resolve conflicting results.
Vitamin D and Sjögren's Disease: Revealing the Connections-A Systematic Review and Meta-Analysis.
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PMID: 36771203 PMC: 9920259. DOI: 10.3390/nu15030497.
An Update on the Effects of Vitamin D on the Immune System and Autoimmune Diseases.
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PMID: 35693738 PMC: 9149638. DOI: 10.7150/ijms.70984.
Diet in Scleroderma: Is There a Need for Intervention?.
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PMID: 34829464 PMC: 8620611. DOI: 10.3390/diagnostics11112118.