ruolo della vitamina d nelle malattie infiammatorie · vitamin d and inflammatory bowel diseases...
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Il ruolo della vitamina D
nelle malattie infiammatorie
Palma Scolieri
UOC Medicina Interna e Reumatologia
PTP Nuovo Regina Margherita
Roma
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Agenda
Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
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Obtaining vitamin D from dietis still critical for mostvertebrates for their skeletalhealth.
Vitamin D deficiency
The major cause for vitamin Ddeficiency is the lack ofappreciation that sunexposure has been andcontinues to be the majorsource of vitamin D forchildren and adults of all ages.
Intestinal mucosa integrityfor both calcium andvitamin D absorption.
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Agenda
Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
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Vitamin D in autoimmune diseases
Epidemiological, genetic,and basic studies indicateda potential role of vitaminD in the pathogenesis ofcertain systemic and organ-specific autoimmunediseases. These studiesdemonstrate correlationbetween low vitamin D andprevalence of diseases.
In addition, VDRs'polymorphisms observed insome of these autoimmunediseases may furthersupport a plausiblepathogenic link.
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Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
Agenda
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Vitamin D in immune regulation
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Vitamin D in immune regulation
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Vitamin D in immune regulation
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Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
Agenda
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Vitamin D and inflammation/infection
118 voluntary females
Vit D CRP IL-1 IL-6 IL-8 IL-17 IFN TNF
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The hypothesis proposes that lowvitamin D is the consequence of achronic inflammatory processcaused by persistent infection.
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Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
Agenda
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Vitamin D and Rheumatoid Arthritis
A correlation between the prevalence ofrheumatoid arthritis (RA) and latitude has beendescribed to confirm a potential associationbetween hypovitaminosis D and the risk of RA.
It has been observed that subjects with a highervitamin D intake have a lower risk of developingRA despite this finding has not been confirmedby subsequent studies.
A negative correlation between ultraviolet-B (UV-B)light exposure and the risk of developing RA hasbeen observed. Rossini M et al. Arthritis Res Ther 2010
Arkema EV et al. Ann Rheum Dis 2013Hitchon CA et al. J Rheumatol 2012
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Vitamin D and Rheumatoid Arthritis
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Vitamin D and Psoriatic Arthritis
Despite some exceptions attributable to better environmentalconditions in terms of sun exposure, low levels of vitamin Dwere found also in patients with psoriatic arthritis (PsA).
Some studies have also identified a correlation with the diseaseactivity.
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Vitamin D and Spondiloarthritis
Although no association between hypovitaminosis D andspondyloarthritis (SA) has been found, some studies havedemonstrated a negative association between some diseaseactivity indices and serum levels of 25OHD and 1-25OHD.
A proteomic study has found a correlation between a vitamin Dmetabolite and the disease activity, even though the cause-effect relationship is not yet well-understood.
Lange U et al. Osteoporos Int 2001
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Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
Agenda
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Vitamin D and IBD
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Vitamin D and IBD
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Vitamin D and IBD
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Vitamin D deficiency Vitamin D in systemic and organ-specific autoimmune diseases Vitamin D and immune regulation Vitamin D and inflammation/infection Vitamin D and rheumatic diseases Vitamin D and inflammatory bowel diseases Vitamin D and biologic therapy
Agenda
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Vitamin D and biologic therapy
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Vitamin D and biologic therapy
Factor OR 95% CI P value
Biologic therapy 4.61 1.9-11 0.001
Age 0.98 0.96-1.75 NS
Gender 0.83 0.34-1.75 NS
Disease group(rheumatic or IBD)
1.01 0.45-2.25 NS
MULTIVARIATE ANALYSIS
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Vitamin D and biologic therapy
Clinical Gastroenterology and Hepatology 2016 (in press)
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Conclusions - 1
Vitamin D is considered a steroid hormone with immuno-modulatory activities
Vitamin D is implicated in the prevention and protection against infections
Vitamin D plays a role in rheumatic diseases and inflammatory bowel diseases
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Conclusions - 2
Patients with IBD and rheumatic diseases are at risk of developing vitamin D deficiency
Wether vitamin D deficiency worses disease severity or is merely is a consequence of severe disease should be still investigated
The subgroup of patients at higher risk for Vitamin D deficiencyshould be identified to prevent disease relapse and/or loss ofresponse to biologic therapy