Zhongguo quanke yixue (Jun 2023)
Clinical Value of Systemic Immune-inflammation Index in the Diagnosis of Diabetic Kidney Disease in Community-dwelling Elderly Patients with Type 2 Diabetes
Abstract
Background Diabetic kidney disease (DKD) is a common diabetic complication, which is mainly characterized by damage in renal microvessels. Early diagnosis and active prevention of DKD are the key to improving the prognosis. The blood inflammatory index may be related to DKD. Objective To explore the value of systemic immune-inflammation index (SII) for the diagnosis of DKD in elderly type 2 diabetes mellitus (T2DM) patients in the community. Methods A retrospective study was conducted with 327 elderly patients with T2DM who underwent routine physical examination in Community Medical Department, Beijing Chao-yang Hospital (West Branch), Capital Medical University from January to December 2021. They were divided into non-DKD group (n=112) and DKD group (n=215) by the prevalence of DKD. The general data and laboratory examination data of the two groups were collected and compared. Pearson correlation analysis and Spearman rank correlation analysis were used to assess the correlation of urinary albumin/creatinine ratio (UACR) with other various indicators. Multivariate Logistic regression analysis was used to explore the influencing factors of DKD in the patients. The diagnostic value of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and SII for DKD in these patients was evaluated by using the receiver operating characteristic (ROC) curve, and the area under the curve (AUC) with corresponding 95%CI was calculated. Results The course of T2DM in DKD group was longer than that in non-DKD group (P<0.05). Moreover, the proportion of patients with hypertension history, fasting plasma glucose (FPG), low-density lipoprotein (LDL), blood urea nitrogen, serum creatinine (Scr), UACR, neutrophils, platelets, NLR, PLR and SII in DKD group were higher than those in non-DKD group (P<0.05). Correlation analysis showed that course of T2DM, FPG, triacylglycerol, LDL, neutrophils, platelets, NLR, PLR and SII were positively related with UACR (r=0.716, 0.114, 0.113, 0.144, 0.533, 0.226, 0.538, 0.430, 0.494, P<0.05). Multivariate Logistic regression analysis showed that course of T2DM〔OR=1.300, 95%CI (1.173, 1.441), P<0.001〕, LDL〔OR=2.565, 95%CI (1.320, 4.985), P=0.005〕, Scr〔OR=1.093, 95%CI (1.046, 1.143), P<0.001〕, NLR〔OR=2.565, 95%CI (1.320, 4.985), P=0.005〕and SII〔OR=1.011, 95%CI (1.007, 1.015), P<0.001〕were associated with DKD in elderly. In diagnosing DKD in these patients, the AUC of NLR was 0.755〔95%CI (0.696, 0.814) 〕, the optimal cut-off value was 2.49, with a sensitivity of 72.1% and a specificity of 70.5%; the AUC of PLR was 0.689〔95%CI (0.624, 0.754) 〕, the optimal cut-off value was 112.81, with a sensitivity of 90.2%, and a specificity of 43.8%; the AUC of SII was 0.836〔95%CI (0.791, 0.881) 〕, the optimal cut-off value was 492.08, with a sensitivity of 80.5% and a specificity of 73.2%. Conclusion The course of T2DM, LDL, Scr, NLR and SII may be the influencing factors of DKD in community-dwelling elderly T2DM patients. Moreover, SII has great clinical diagnostic value for DKD in this population.
Keywords
