4.7 Article

Salivary biomarkers in children with juvenile idiopathic arthritis and healthy age-matched controls: a prospective observational study

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SCIENTIFIC REPORTS
卷 12, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41598-022-07233-0

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  1. Karolinska Institute
  2. Stockholm County Council (SOF project)
  3. Folktandvarden Stockholms lan AB
  4. Swedish Rheumatism Association
  5. Samaritan Foundation for Pediatric Research
  6. Folktandvarden Sormland AB

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This study investigated the detectability and concentration of cytokines and chemokines in the saliva of children with juvenile idiopathic arthritis (JIA), as well as the saliva flow and the influence of orofacial pain on saliva flow. The results showed that there was no significant difference in the levels of cytokines and chemokines in the saliva between children with JIA and healthy controls. However, there was an association between orofacial pain and reduced saliva flow rate for both groups.
Monitoring the immune system's regulation and signaling using saliva could be of interest for clinicians and researchers. Saliva, a biofluid with close exchange with serum, is influenced by circadian variance and oral factors such as masticatory function. This study investigated the detectability and concentration of cytokines and chemokines in saliva in children with juvenile idiopathic arthritis (JIA) as well as saliva flow and the influence of orofacial pain on saliva flow. Of the 60 participants (7-14 years old) enrolled, 30 had a diagnosis of JIA and active disease, and 30 were sex- and age-matched healthy controls. Demographic data and three validated questions regarding presence of orofacial pain and dysfunction were recorded. Stimulated whole saliva was collected and analyzed using a customized R&D bead-based immunoassay with 21 targeted biomarkers. Fourteen of these were detectable and showed similar levels in both children with JIA and controls: TNF-alpha, TNFRSF1B, MMP-2, MMP-3, IL-1alpha, IL-1beta, IL-6R alpha, IL-8, S100A8, CCL2, CCL3, IL-10, CCL11, and CXCL9. In addition, there was no difference in salivary flow rate between groups, but there was an association between orofacial pain and reduced saliva flow rate for both groups.

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