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Salivary resistin reflects local inflammation in Sjögrens syndrome

Journal article
Authors Elisabeth Almer Boström
Helena Forsblad d'Elia
Ulf Dahlgren
Charlotte Simark-Mattsson
Bengt Hasséus
Hans Carlsten
Andrej Tarkowski
Maria Bokarewa
Published in Journal of Rheumatology
Volume 35
Issue 10
Pages 2005-2011
ISSN 0315-162X
Publication year 2008
Published at Institute of Odontology
Institute of Medicine, Department of Rheumatology and Inflammation Research
Pages 2005-2011
Language en
Subject categories Microbiology in the medical area, Rheumatology and Autoimmunity, Other odontology


OBJECTIVE: To assess the role of resistin in primary Sjogren's syndrome (pSS) and its relation to local inflammation. METHODS: Blood and saliva were collected from 37 patients with pSS (duration of symptoms 12.6+/-1 yrs) and 32 healthy controls. Expression of resistin in salivary glands was visualized immunohistologically, and levels of resistin were detected by ELISA. Levels of resistin were evaluated at baseline and following oral dehydroepiandrosterone (DHEA) treatment (50 mg/day). The effect of DHEA treatment on the secretion of resistin was assessed in vitro in human leukocytes after challenge with insulin and lipopolysaccharide. RESULTS: Levels of resistin in saliva were significantly higher in patients with pSS than in controls, while circulating levels of resistin were similar in both groups. Resistin was expressed in the epithelial cells of striated ducts and in the lymphocytic foci. Resistin levels in saliva were related to the intensity of inflammation in the minor salivary glands of pSS patients. No changes of the levels of resistin in blood or saliva were observed during DHEA treatment. Exposure of naive leukocytes to DHEA in vitro induced significant expression of resistin compared to nonstimulated peripheral blood mononuclear cells (p=0.031). CONCLUSION: We showed that levels of resistin are upregulated locally in the salivary glands of patients with pSS; and that the levels of resistin correspond to the intensity of lymphocytic inflammation in patients with pSS. We suggest that resistin is expressed in the salivary glands of patients with pSS and may be a driving factor of local inflammation.

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