Krebs von den Lungen-6 (KL-6), soluble programmed cell death-1 (sPD-1) and its ligand-1(sPDL-1) in systemic sclerosis patients: Relation to disease parameters
The Egyptian Rheumatologist, ISSN: 1110-1164, Vol: 44, Issue: 4, Page: 333-337
2022
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Article Description
This study aimed to assess the levels of Krebs von den Lungen-6 (KL-6), soluble programmed cell death-1 (sPD-1) and soluble programmed cell death ligand-1(sPDL-1) in systemic sclerosis (SSc) patients, and to evaluate their relation with disease parameters. Forty-six SSc patients (31 limited, 15 diffuse) and 43 matched controls were included. Serum levels of KL-6, sPD-1, and sPDL-1 were assessed by enzyme-linked immune-sorbent assay (ELISA). Patients mean age was 40.2 ± 12.2 years, disease duration 8.04 ± 6.02 years and females: male was 10.5:1. Levels of KL-6, sPD-1, and sPDL-1 were significantly higher in SSc patients compared to the controls 22.4(14.1–637.6) vs. 14.8(8.9–182.3) (p < 0.001), 3.1(1.8–64.2) vs. 1.2(0.68–14.4) (p < 0.001), and 2.8(1.5–84.4) vs. 1.4(0.92–36.4) (p < 0.001) respectively. KL-6 and sPD-1 levels were significantly lower in diffuse SSc subtype than the limited subtype 20.7(14.1–637.6) vs. 24.5(16.2–328.8) (p = 0.01), and 2.5(1.8–64.2) vs. 3.2(2.1–63.4) (p = 0.03) respectively. KL-6 was significantly decreased in SSc patients who developed pulmonary hypertension compared to those without 20.9(14.1–36.3) vs. 27.5(16.5–637.6) (p = 0.02), and in those who received cyclophosphamide 21(14.1–310.9 vs. 31.6(16.2–637.6) (p = 0.019). The three markers were significantly correlated. KL-6 levels with sPD-1 (r = 0.79, p < 0.001) and sPDL-1 (r = 0.79, p < 0.001) and between sPD-1 and sPDL-1 (r = 0.82, p < 0.001) respectively. Both sPD-1 and sPDL-1 significantly correlated with age (r = 0.29, p = 0.048 and r = 0.34, p = 0.021 respectively). KL-6, sPD-1, and sPDL-1 may be considered as potential biomarkers in the diagnosis and assessment of SSc patients. Significantly lower levels of KL-6 were detected in diffuse SSc patients, those with pulmonary hypertension, and patients who received cyclophosphamide.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1110116422000801; http://dx.doi.org/10.1016/j.ejr.2022.05.001; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85131241491&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1110116422000801; https://dx.doi.org/10.1016/j.ejr.2022.05.001
Elsevier BV
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