Cytokine and autoantibody profiling related to histopathological features in primary Sjogren's syndrome.
Rheumatology (Oxford)
; 48(9): 1102-6, 2009 Sep.
Article
em En
| MEDLINE
| ID: mdl-19574472
ABSTRACT
OBJECTIVE:
To investigate a potential correlation between circulating cytokine and autoantibody levels and histopathological features in subgroups of patients with primary SS (pSS).METHODS:
Minor salivary gland biopsies from a cohort of 141 patients fulfilling the American-European consensus classification criteria for pSS were re-examined and grouped according to focus score (FS) and germinal centre (GC) status; serum samples were analysed for autoantibodies, chemokines and cytokines.RESULTS:
Of the 115 available biopsies, 18 (16%) lacked characteristic focal mononuclear cell infiltrates [FS < 1 (FS-)] but patients were positive for Ro/SSA and/or La/SSB. IL-17, IL-1RA, IL-15, macrophage inflammatory protein (MIP)-1alpha, MIP-1beta, eotaxin, IFN-alpha and IL-4 levels were significantly increased in the 27 (23%) patients with ectopic GC formation (GC+) in the salivary glands compared with the GC- patients (n = 70). In addition, minor differences in cytokine levels were found when comparing age groups.CONCLUSION:
Degenerative changes observed in the minor salivary glands of patients with pSS may represent 'burned out' inflammation. The elevated levels of IL-4 found in these patients may influence the reduced salivary flow observed in GC+ patients. Increased titres of Th17-associated cytokines, IL-17, IL-1beta and the IL-23 subunit IL-12p40, may indicate a higher activity of these cells in GC+ patients. Differences in cytokine levels may be utilized when sub-grouping the SS patients into disease phases and may consequently have implications for treatment.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Autoanticorpos
/
Síndrome de Sjogren
/
Citocinas
Tipo de estudo:
Etiology_studies
/
Incidence_studies
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Observational_studies
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Risk_factors_studies
Limite:
Adult
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Humans
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Middle aged
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article