RGD Reference Report - Serum level of soluble CX3CL1/fractalkine is elevated in patients with polymyositis and dermatomyositis, which is correlated with disease activity. - Rat Genome Database

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Serum level of soluble CX3CL1/fractalkine is elevated in patients with polymyositis and dermatomyositis, which is correlated with disease activity.

Authors: Suzuki, F  Kubota, T  Miyazaki, Y  Ishikawa, K  Ebisawa, M  Hirohata, S  Ogura, T  Mizusawa, H  Imai, T  Miyasaka, N  Nanki, T 
Citation: Suzuki F, etal., Arthritis Res Ther. 2012 Mar 6;14(2):R48. doi: 10.1186/ar3761.
RGD ID: 9491763
Pubmed: PMID:22394569   (View Abstract at PubMed)
PMCID: PMC3446414   (View Article at PubMed Central)
DOI: DOI:10.1186/ar3761   (Journal Full-text)

INTRODUCTION: Polymyositis (PM) and dermatomyositis (DM) are chronic inflammatory muscle diseases, in which chemokines are thought to contribute to inflammatory cell migration into muscle. In this study, we retrospectively analyzed the expressions of CX3CL1/fractalkine and its corresponding receptor, CX3CR1, in muscle and lung with interstitial lung disease (ILD) of PM patients and DM patients, and determined the correlation between serum soluble CX3CL1 level and disease activity. METHODS: Expressions of CX3CL1 and CX3CR1 in muscle and lung tissue were analyzed by immunohistochemistry. Serum CX3CL1 concentrations were measured by ELISA. For evaluation of patients' disease activity, serum creatinine kinase, manual muscle testing, and the alveolar-arterial oxygen pressure difference were used independently. RESULTS: CX3CL1 was expressed on infiltrated mononuclear cells and endothelial cells in muscle affected by PM and DM and in lung with ILD, whereas CX3CR1 was expressed on some CD4+ T cells, a majority of CD8+ T cells, and most macrophages in muscle, and on infiltrated mononuclear cells in the lung. Serum soluble CX3CL1 was significantly higher in PM patients and DM patients than in healthy controls. The CX3CL1 level was correlated with serum creatinine kinase and manual muscle testing score. In patients with PM and DM with ILD, serum CX3CL1 was also correlated with alveolar-arterial oxygen pressure difference. Furthermore, CX3CL1 was significantly decreased after conventional treatment. CONCLUSIONS: The interaction between CX3CL1 and CX3CR1 might contribute to the inflammatory cell infiltration into affected muscle and lung with ILD in PM patients and DM patients. Serum CX3CL1 level could be a surrogate marker of disease activity.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
dermatomyositis  IEP 9491763protein:expression:serumRGD 
dermatomyositis  ISOCX3CL1 (Homo sapiens)9491763; 9491763protein:expression:serumRGD 
polymyositis  IEP 9491763protein:expression:serumRGD 
polymyositis  ISOCX3CL1 (Homo sapiens)9491763; 9491763protein:expression:serumRGD 

Objects Annotated

Genes (Rattus norvegicus)
Cx3cl1  (C-X3-C motif chemokine ligand 1)

Genes (Mus musculus)
Cx3cl1  (C-X3-C motif chemokine ligand 1)

Genes (Homo sapiens)
CX3CL1  (C-X3-C motif chemokine ligand 1)


Additional Information