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Serum interleukin-16 Significantly Correlates With the Vasculitis Damage Index in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis

 Taejun Yoon  ;  Jung Yoon Pyo  ;  Sung Soo Ahn  ;  Jason Jungsik Song  ;  Yong-Beom Park  ;  Sang-Won Lee 
 ARTHRITIS RESEARCH & THERAPY, Vol.22(1) : 73, 2020-04 
Journal Title
Issue Date
Activity ; Antineutrophil cytoplasmic antibody-associated vasculitis ; Reflect ; Serum IL-16 ; Vasculitis damage
Background: Interleukin (IL)-16 is a T cell chemoattractant produced by peripheral mononuclear cells. We investigated whether IL-16 plays a pro- or an anti-inflammatory role in antineutrophil cytoplasmic antibody-associated vasculitis (AAV). Furthermore, we investigated whether the level of IL-16 could predict the activity and extent of organ damage in AAV based on AAV-specific indices. Methods: Seventy-eight patients with AAV from a prospective observational cohort were included in this analysis. Blood sampling and clinical assessments, including the Birmingham Vasculitis Activity Score (BVAS), Five-Factor Score (FFS), Short Form 36-item Health Survey (SF-36), and Vasculitis Damage Index (VDI), were performed, and laboratory data were collected. Serum IL-16 was measured from stored sera. Results: The median age was 62.0 years, and 27 patients were male. The median serum IL-16 concentration was 84.1 pg/dL, and the median BVAS, FFS, VDI, and SF-36 scores were 7.0, 1.0, 3.0, and 48.0, respectively. Among the AAV-related indices, the serum IL-16 concentration was correlated with VDI (R2 = 0.306, P = 0.006), but not with BVAS (R2 = 0.024, P = 0.834), FFS (R2 = - 0.069, P = 0.550), or SF-36 (R2 = - 0.015, P = 0.898). The serum IL-16 concentration also did not correlate with either the erythrocyte sedimentation rate or the C-reactive protein concentration. Per our analysis based on organ involvement, only patients with ear, nose, and throat manifestations had higher serum IL-16 concentrations relative to those with other conditions (P = 0.030). Conclusions: This was the first study to elucidate the clinical implication of serum IL-16 in patients with AAV. We found that the serum IL-16 level may reflect the cross-sectional VDI scores among AAV-specific indices. Future studies with larger numbers of patients and serial measurements could provide more reliable data on the clinical implications of serum IL-16 in AAV.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Park, Yong Beom(박용범)
Song, Jason Jungsik(송정식) ORCID logo https://orcid.org/0000-0003-0662-7704
Ahn, Sung Soo(안성수) ORCID logo https://orcid.org/0000-0002-9002-9880
Lee, Sang Won(이상원) ORCID logo https://orcid.org/0000-0002-8038-3341
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