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1.
Nutr Res ; 92: 139-149, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34311227

RESUMO

A number of studies have demonstrated that patients with autoimmune disease have lower levels of vitamin D prompting speculation that vitamin D might suppress inflammation and immune responses in children with juvenile idiopathic arthritis (JIA).  The objective of this study was to compare vitamin D levels in children with JIA at disease onset with healthy children. We hypothesized that children and adolescents with JIA have lower vitamin D levels than healthy children and adolescents. Data from a Canadian cohort of children with new-onset JIA (n= 164, data collection 2007-2012) were compared to Canadian Health Measures Survey (CHMS) data (n=4027, data collection 2007-2011). We compared 25-hydroxy vitamin D (25(OH)D) concentrations with measures of inflammation, vitamin D supplement use, milk intake, and season of birth. Mean 25(OH)D level was significantly higher in patients with JIA (79 ± 3.1 nmol/L) than in healthy controls (68 ± 1.8 nmol/L P <.05). Patients with JIA more often used vitamin D containing supplements (50% vs. 7%; P <.05). The prevalence of 25(OH)D deficiency (<30 nmol/L) was 6% for both groups. Children with JIA with 25(OH)D deficiency or insufficiency (<50 nmol/L) had higher C-reactive protein levels. Children with JIA were more often born in the fall and winter compared to healthy children. In contrast to earlier studies, we found vitamin D levels in Canadian children with JIA were higher compared to healthy children and associated with more frequent use of vitamin D supplements. Among children with JIA, low vitamin D levels were associated with indicators of greater inflammation.


Assuntos
Artrite Juvenil/sangue , Suplementos Nutricionais , Inflamação , Parto , Estações do Ano , Deficiência de Vitamina D/sangue , Vitamina D/sangue , Animais , Artrite Juvenil/complicações , Artrite Juvenil/imunologia , Doenças Autoimunes , Proteína C-Reativa/metabolismo , Canadá/epidemiologia , Estudos de Casos e Controles , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Humanos , Recém-Nascido , Inflamação/etiologia , Inflamação/metabolismo , Masculino , Leite , Vitamina D/análogos & derivados , Vitamina D/uso terapêutico , Deficiência de Vitamina D/complicações , Deficiência de Vitamina D/tratamento farmacológico , Deficiência de Vitamina D/imunologia
3.
J Rheumatol ; 33(1): 173-84, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16395765

RESUMO

A symposium was convened April 2, 2005, by the Department of Pediatrics, University of British Columbia, Vancouver, Canada. The event was a tribute to Dr. Ross Petty on his retirement and in recognition of his contributions to the local and international community of pediatric rheumatology. Speakers were past and present fellows, local basic science and adult rheumatology colleagues, and pediatric rheumatologists from the Pacific North West.


Assuntos
Pediatria/tendências , Doenças Reumáticas , Reumatologia/tendências , Adolescente , Criança , Pré-Escolar , Humanos , Lactente , Recém-Nascido
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