Objective  To investigate the relationships of preoperative serum V-set and immunoglobulin domain 4 (VSIG4) and long chain non-coding ribonucleic acid (LncRNA) SBF2 antisense RNA1 (SBF2-AS1) with acute kidneyinjury (AKI) after percutaneous nephrolithotomy in patients with renal calculus.

Methods  A total of 109 patients with renal calculus in the hospital from January 2020 to December 2022 were selected as research objects. Serum VSIG4 level and LncRNA SBF2-AS1 expression were detected in all the patients before operation, and incidence of AKI was recorded after operation. Multiple Logistic regression model was used to analyze the factors affecting AKI after percutaneous nephrolithotomy in patients with renal calculus; the receiver operating characteristic (ROC) curve was used to analyze the values of VSIG4 and LncRNA SBF2-AS1 in predicting AKI after percutaneous nephrolithotomy in patients with renal calculus.

Results  In this study, 16 cases had AKI after operation. The serum VSIG4 level in the AKI group was significantly lower than that in the non-AKI group, while the LncRNA SBF2-AS1 expression was significantly higher than that in the non-AKI group (P < 0.05). Multivariate Logistic regression analysis showed that preoperative high level of uric acid, preoperative high expression of LncRNA SBF2-AS1, the longer operation time and intraoperative hypotension were the risk factors for AKI after percutaneous nephrolithotomy in patients with renal calculus (P < 0.05), while preoperative high level of VSIG4 was the protective factor (P < 0.05). The values of area under the curve of preoperative serum VSIG4 and LncRNA SBF2-AS1 in predicting AKI after percutaneous nephrolithotomy in patients with renal calculus were 0.854 and 0.705 respectively, and the area under the curve of combined prediction of the two indexes was 0.948, which was significantly higher than that of single index prediction (Z=1.995, 2.958, P < 0.05).

Conclusion  Decreased preoperative serum VSIG4 level and increased expression of LncRNA SBF2-AS1 in patients with renal calculus are associated with the occurrence of AKI after percutaneous nephrolithotomy, and the combined detection of preoperative VSIG4 and LncRNA SBF2-AS1 can predict the risk of AKI after operation.