Clinical implications of elevated serum interleukin-6 in IgG4-related disease


Autoři: Satoshi Tsukuda aff001;  Tsukasa Ikeura aff001;  Takashi Ito aff001;  Koh Nakamaru aff001;  Masataka Masuda aff001;  Yuichi Hori aff001;  Manami Ikemune aff001;  Masato Yanagawa aff001;  Toshihiro Tanaka aff001;  Takashi Tomiyama aff001;  Takashi Yamaguchi aff001;  Yugo Ando aff001;  Kazushige Uchida aff002;  Toshiro Fukui aff001;  Akiyoshi Nishio aff001;  Rika Terasawa aff003;  Noboru Tanigawa aff003;  Kazuichi Okazaki aff001
Působiště autorů: Division of Gastroenterology and Hepatology, The Third Department of Internal Medicine, Kansai Medical University, Hirakata, Osaka, Japan aff001;  Department of Gastroenterology and Hepatology, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan aff002;  Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan aff003
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
doi: 10.1371/journal.pone.0227479

Souhrn

Introduction

Some patients with IgG4-related disease (IgG4-RD) exhibit elevated serum interleukin (IL)-6 with excessive inflammatory reactions or with repeating relapse. To date few reports pertaining to clinical implications of elevated serum IL-6 in IgG4-RD patients have been published. The aims of the current retrospective study were to investigate the clinical implications of elevated serum IL-6 in IgG4-RD patients, and to examine whether IL-6 can predict the activity and/or relapse of the disease.

Materials and methods

We examined the clinical picture at the onset of 43 patients who were diagnosed with IgG4-RD in our hospital and were able to measure serum IL-6 before steroid treatment.

Results

The median level of serum IL-6 was 2.2 pg/mL. There was a significant correlation between IL-6 and C-reactive protein (CRP) level (r = 0.397, p = 0.008), hemoglobin level (r = -0.390, p = 0.010) and albumin level (r = -0.556, p < 0.001). When 43 patients were divided into two groups by using a cut-off IL-6 of 4 pg/mL, the high IL-6 group showed higher age, lower albumin, higher CRP and higher aspartate aminotransferase (AST) (age p = 0.014, albumin p = 0.006, CRP p <0.001, AST p = 0.009). Hepatic swelling and splenomegaly were significantly more prevalent in the high IL-6 group than it was in the low IL-6 group (liver p < 0.001, spleen p = 0.020). Biliary tract involvement tended to admit more in the high IL-6 group (p = 0.060).

Conclusion

Serum IL-6 level at the onset of IgG4-RD may be significantly correlated with clinical inflammatory parameters and it may also be associated with involvement of the bile duct, liver, and spleen.

Klíčová slova:

Albumins – Diagnostic medicine – Hemoglobin – Kidneys – Pancreas – Spleen – Steroid therapy – Splenomegaly


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