Diego Prieto1, Camila González1, Laura Weber1, Ornella Realini1, Karina Pino-Lagos2, Maria José Bendek1, Ignacio Retamal1, Víctor Beltrán3, Juan Pablo Riedemann4, Francisco Espinoza5, Alejandra Chaparro1. 1. Department of Periodontology, Center for Biomedical and Innovation Research, Laboratory of Periodontal Research, Faculty of Dentistry, Universidad de los Andes, Santiago, Chile. 2. Centro de Investigación e Innovación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile. 3. Centre of Investigation and Innovation in Clinical Dentistry, Faculty of Dentistry, Universidad de la Frontera, Temuco, Chile. 4. Rheumatology Unit, Faculty of Medicine, Universidad de la Frontera, Temuco, Chile. 5. Department of Rheumatology, Faculty of Medicine, Universidad de los Andes, Santiago, Chile.
Abstract
BACKGROUND: To explore the soluble Neuropilin-1 (sNRP-1) concentrations in gingival crevicular fluid (GCF) and the periodontal clinical status of patients with Rheumatoid Arthritis (RA). MATERIALS AND METHODS: We conducted an exploratory study with 40 study participants, 20 with RA, and 20 healthy controls. Clinical and periodontal data were recorded, and GCF samples were obtained. sNRP-1 levels in GCF were determined by ELISA assay. Descriptive statistics, Mann-Whitney U test, Unpaired t-test, logistic regression model, and Area Under Receiver Operating Characteristic Curve (AUC-ROC) were made to explore the diagnostic performance accuracy. RESULTS: RA patients had significantly higher levels of sNRP-1 in GCF (p = 0.0447). The median levels of GCF-sNRP-1 were 208.85 pg/μl (IQR 131.03) in the RA group compared to 81.46 pg/μl (IQR 163.73) in the control group. We observed an association between the GCF-sNRP-1 concentrations and the RA diagnosis (OR:1.009; CI 1.00-1.001; p = 0.047). The diagnosis of chronic periodontitis was also associated with RA (OR: 6.9; CI 1.52-31.37; p = 0.012). Moreover, the AUC-ROC of GCF-sNRP-1 concentrations combined with periodontal clinical parameters such as periodontal probing depth and periodontal inflamed surface area was 0.80. CONCLUSION: This exploratory case-control study shows that RA patients had significantly higher levels of sNRP-1 in GCF. New longitudinal studies are necessary to evaluate the role of NRP-1 in periodontal tissues and consider it an oral biomarker with clinical value in RA.
BACKGROUND: To explore the soluble Neuropilin-1 (sNRP-1) concentrations in gingival crevicular fluid (GCF) and the periodontal clinical status of patients with Rheumatoid Arthritis (RA). MATERIALS AND METHODS: We conducted an exploratory study with 40 study participants, 20 with RA, and 20 healthy controls. Clinical and periodontal data were recorded, and GCF samples were obtained. sNRP-1 levels in GCF were determined by ELISA assay. Descriptive statistics, Mann-Whitney U test, Unpaired t-test, logistic regression model, and Area Under Receiver Operating Characteristic Curve (AUC-ROC) were made to explore the diagnostic performance accuracy. RESULTS: RA patients had significantly higher levels of sNRP-1 in GCF (p = 0.0447). The median levels of GCF-sNRP-1 were 208.85 pg/μl (IQR 131.03) in the RA group compared to 81.46 pg/μl (IQR 163.73) in the control group. We observed an association between the GCF-sNRP-1 concentrations and the RA diagnosis (OR:1.009; CI 1.00-1.001; p = 0.047). The diagnosis of chronic periodontitis was also associated with RA (OR: 6.9; CI 1.52-31.37; p = 0.012). Moreover, the AUC-ROC of GCF-sNRP-1 concentrations combined with periodontal clinical parameters such as periodontal probing depth and periodontal inflamed surface area was 0.80. CONCLUSION: This exploratory case-control study shows that RA patients had significantly higher levels of sNRP-1 in GCF. New longitudinal studies are necessary to evaluate the role of NRP-1 in periodontal tissues and consider it an oral biomarker with clinical value in RA.
Authors: Man Wai Tang; Beatriz Malvar Fernández; Simon P Newsom; Jaap D van Buul; Timothy R D J Radstake; Dominique L Baeten; Paul P Tak; Kris A Reedquist; Samuel García Journal: Rheumatology (Oxford) Date: 2018-05-01 Impact factor: 7.580
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