TY - JOUR T1 - Vitamin D levels in patients with small and medium vessel vasculitis JO - Reumatología Clínica (English Edition) T2 - AU - Korkmaz,Fatma Nur AU - Ozen,Gulsen AU - Unal,Ali Ugur AU - Odabasi,Asli AU - Can,Meryem AU - Asıcıoglu,Ebru AU - Tuglular,Serhan AU - Direskeneli,Haner SN - 21735743 M3 - 10.1016/j.reumae.2020.11.004 DO - 10.1016/j.reumae.2020.11.004 UR - https://www.reumatologiaclinica.org/en-vitamin-d-levels-in-patients-articulo-S2173574322000326 AB - ObjectivesTo determine the prevalence of vitamin D deficiency in patients with small and medium vessel systemic vasculitis. MethodsIn this cross-sectional study, 25-hydroxy (OH) vitamin D3 levels were measured in adult patients with systemic small and medium vessel vasculitis including antineutrophil cytoplasmic antibody-associated vasculitis (AAV), cryoglobulinaemic vasculitis (CryV), IgA vasculitis (IgAV) and polyarteritis nodosa (PAN), and age- and sex-matched healthy subjects (HS) and patients with rheumatoid arthritis (RA) as control groups. 25OH vitamin D3 levels<30ng/ml and <20ng/ml were regarded as insufficiency and deficiency, respectively. ResultsFifty-seven patients (42 AAV, 2 CryV, 8 IgA vasculitis, 5 PAN) with systemic vasculitis, 101 HS, and 111 RA patients were included. The mean 25OH vitamin D3 level was 21.8±14.2ng/mL in patients with vasculitis, 42.7±27.6ng/mL in HS (p<.001) and 20.1±18.47ng/mL in patients with RA (p=.54). Vitamin D insufficiency and deficiency were significantly higher in patients with systemic vasculitis compared to HS (75.4% vs 33.7%, p<.001; %50 vs 21.8%, p<.001, respectively). Vitamin D status was not different in patients with systemic vasculitis compared to RA. There was a negative correlation between vitamin D status and CRP levels (=−.364, p=.007). The multivariate logistic regression analysis showed that renal involvement was significantly associated with vitamin D deficiency/insufficiency in patients with vasculitis (OR 22.5 [95% CI 1.6–128.9]. ConclusionVitamin D deficiency and insufficiency are more frequent in patients with systemic small and medium vessel vasculitis and RA than HS. Renal involvement is one of the factors associated with vitamin D deficiency/insufficiency in patients with vasculitis. ER -