Abstract
Objective
Endothelial dysfunction (ED) has an important role in the pathogenesis of systemic lupus erythematosus (SLE). Studies on other inflammatory diseases show that salusin-β with various mechanisms may play a role in the promotion of ED and inflammation. The aim of this study was to measure serum salusin-β levels in SLE patients and evaluate it as a potential biomarker in assessing SLE activity and predicting organ involvement.
Methods
In a cross-sectional study, 60 patients diagnosed with SLE and 30 age- and sex-matched healthy controls were enrolled. Disease activity of SLE patients was assessed by the systemic lupus erythematosus disease activity index 2000 (SLEDAI-2 K). Serum levels of salusin-ß were measured using a human salusin-ß enzyme-linked immunosorbent assay kit.
Results
Serum salusin-β levels in SLE and control groups were 474.2 ± 117.1 pg/ml and 157.7 ± 88.7 pg/ml, respectively. The difference was significant (P = 0.001). There was no significant correlation between serum salusin-β levels with age (r = − 0.06, P = 0.632) and SLEDAI (r = − 0.185, P = 0.158). In patients with nephritis and thrombosis, serum salusin-β was significantly higher. In addition, in patients with serositis, serum salusin-β was significantly lower. Multiple linear regression analysis showed that serum salusin-β levels retained a significant association with nephritis and thrombosis after model adjustment for serositis, nephritis, and thrombosis.
Conclusions
Our findings showed that salusin-β might have a possible role in the pathogenesis of SLE. Salusin-β may be a potential biomarker for nephritis and thrombosis in SLE.
Key Points • Serum salusin-β levels were significantly higher in SLE patients than the control group. • There was no significant correlation between serum salusin-β levels with age and SLEDAI. • Serum salusin-β levels retained a significant association with nephritis and thrombosis. |
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Data availability
The datasets used during the current study are available from the corresponding author on reasonable request.
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Funding
This research was funded by the Connective Tissue Diseases Research Center of Tabriz University of Medical Sciences, Tabriz, Iran (Grant No. 63897).
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MH, RJ, and AKH designed the study; MH, RJ, MR, AG, and AKH were involved in the data acquisition and/or management; AMM, MG, and AKH analyzed the data and critically interpreted the results; MR, AMM, and AKH were involved in drafting the manuscript. All authors revised the manuscript critically for important intellectual content and approved the final manuscript.
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Hajialilo, M., Jorjani, R., Rahimi, M. et al. Serum salusin-β levels in patients with systemic lupus erythematosus. Clin Rheumatol 42, 2097–2103 (2023). https://doi.org/10.1007/s10067-023-06610-y
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DOI: https://doi.org/10.1007/s10067-023-06610-y