• Turk J Med Sci · Jan 2024

    Serum and urine interferon-inducible protein 10, galectin-9, and SIGLEC-1 as biomarkers of disease activity in systemic lupus erythematosus.

    • Şafak Mirioğlu, Suzan Çinar, Ömer Uludağ, Erdem Gürel, Sibel Varelci, Yasemin Özlük, Işın Kiliçaslan, Yasemin Yalçinkaya, Halil Yazici, Ahmet Gül, Murat Inanç, and Bahar Artim Esen.
    • Division of Rheumatology, İstanbul Faculty of Medicine, İstanbul University, Turkiye.
    • Turk J Med Sci. 2024 Jan 1; 54 (2): 391400391-400.

    Background/AimIn this prospective study, we aimed to investigate the association of serum (s) and urine (u) IP-10, galectin-9, and SIGLEC-1 with disease activity in patients with systemic lupus erythematosus (SLE).Materials And MethodsSixty-three patients with active SLE (31 renal, 32 extrarenal) were included. Thirty patients with inactive SLE (15 renal, 15 extrarenal), 17 with renal active AAV, and 32 healthy volunteers were selected as control groups. Serum and urine IP-10, galectin-9, and SIGLEC-1 were tested using ELISA.ResultsLevels of sIP-10 (p = 0.046), uIP-10 (p < 0.001), sGalectin-9 (p = 0.03), and uSIGLEC-1 (p = 0.006) were significantly higher in active SLE group compared to the inactive SLE; however, no differences were detected in the comparison of uGalectin-9 (p = 0.18) and sSIGLEC-1 (p = 0.69) between two groups. None of the biomarkers discriminated patients with active renal SLE from active extrarenal SLE. ROC analyses revealed an AUC of 0.63 (0.52-0.73) for sIP-10, 0.78 (0.68-0.86) for uIP-10, 0.64 (0.53-0.74) for sGalectin-9, and 0.68 (0.57-0.77) for uSIGLEC-1 in discriminating disease activity in SLE, which did not outperform C3 (0.75, 0.64-0.84) and C4 (0.72, 0.61-0.82). sIP-10 (p = 0.001), uIP-10 (p = 0.042), and uGalectin-9 (p = 0.009) were significantly increased in patients with active renal SLE compared to active renal AAV. sGalectin-9 (p < 0.001) and sIP-10 levels (p = 0.06) were decreased after 8 (5-22.5) months of treatment.ConclusionsIP-10, uIP-10, sGalectin-9, and uSIGLEC-1 reflect global disease activity in SLE but do not outperform C3 and C4. sIP-10 and uIP-10 may be specific for active SLE compared to active AAV. sIP-10 and sGalectin-9 might be valuable in monitoring response after treatment.© TÜBİTAK.

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