Volume 24, Issue 2 pp. 260-267
ORIGINAL ARTICLE

Association of serum CXCL12 levels with arthropathy in patients with systemic sclerosis

Tetsuya Ikawa

Tetsuya Ikawa

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Takuya Miyagawa

Takuya Miyagawa

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Yuki Fukui

Yuki Fukui

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Satoshi Toyama

Satoshi Toyama

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Jun Omatsu

Jun Omatsu

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Kentaro Awaji

Kentaro Awaji

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Yuta Norimatsu

Yuta Norimatsu

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Yusuke Watanabe

Yusuke Watanabe

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Ayumi Yoshizaki

Ayumi Yoshizaki

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Shinichi Sato

Shinichi Sato

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

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Yoshihide Asano

Corresponding Author

Yoshihide Asano

Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

Correspondence

Yoshihide Asano, Department of Dermatology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.

Email: [email protected]

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First published: 30 November 2020
Citations: 6
Funding information

This work was supported by a grant for Research in Intractable Diseases from the Ministry of Health, Labor, and Welfare of Japan. The funder is not involved in study design, data collection, data analysis, manuscript preparation, and publication decisions.

Abstract

Aim

Systemic sclerosis (SSc) is an autoimmune connective tissue disease, in which extensive fibrotic change and vasculopathy affect the skin and various internal organs. It also involves the joints, causing stiffness, arthralgia, and arthritis. Although arthropathy is commonly observed in SSc, its underlying mechanism remains unknown. CXCL12, also known as stromal cell derived factor 1, is associated with inflammation, mesenchymal cell recruitment, angiogenesis, and collagen production, and is implicated in the development of various joint diseases. To assess the potential contribution of CXCL12 to SSc development, we investigated the clinical association of serum CXCL12 levels in patients with SSc.

Method

We conducted a cross-sectional analysis of 68 patients with SSc and 20 healthy controls recruited in a single center over 9 years. Serum CXCL12 levels were measured by enzyme-linked immunosorbent assay.

Results

Serum CXCL12 levels were significantly higher in patients with SSc than in healthy controls (median 1554.0 pg/mL, 25th-75th centiles 1313.0-1914.0 pg/mL vs 967.4 pg/mL, 608.8-1271.0 pg/mL, P < 0.001). Patients with SSc with elevated CXCL12 levels had significantly more cases of arthropathy than those with normal CXCL12 levels (85.7% vs 25.0%, P = 0.01). Furthermore, patients with SSc with elevated CXCL12 levels showed an increased trend in the prevalence of limited range of motion of the finger joints compared with those with normal CXCL12 levels (60.0% vs 18.6%, P =0 .07). Moreover, serum CXCL12 levels were significantly correlated with the titers of rheumatoid factor in patients with SSc (r = .41, P = 0.001).

Conclusion

Elevated serum CXCL12 levels may be related to the development of SSc arthropathy.

Conflict of interest

The authors have no conflicts of interest to declare.

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