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jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Object,java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeMethod(java.lang.Object,java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public javax.script.Bindings jdk.nashorn.api.scripting.NashornScriptEngine.createBindings() public java.lang.Object javax.script.AbstractScriptEngine.get(java.lang.String) public void javax.script.AbstractScriptEngine.put(java.lang.String,java.lang.Object) public javax.script.ScriptContext javax.script.AbstractScriptEngine.getContext() public java.lang.Object 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Journal of Southern Medical University ›› 2026, Vol. 46 ›› Issue (7): 1634-1647.doi: 10.12122/j.issn.1673-4254.2026.07.17

Previous Articles    

Buffering effect of intensive lipid lowering on mortality risk in type 2 diabetic patients with chronic kidney disease and challenging glycemic management: a cohort study based on dual metabolic trajectories

Xiaolong WANG(), Jian YANG, Shuang LIANG, Zheyi DONG()   

  1. Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases, Beijing 100853, China
  • Received:2026-01-29 Online:2026-07-20 Published:2026-07-20
  • Contact: Zheyi DONG E-mail:450391715@qq.com;shengdai26@163.com

Abstract:

Objective To investigate the longitudinal synergistic evolution of low-density lipoprotein cholesterol (LDL-C) and glycated hemoglobin (HbA1c) in patients with type 2 diabetes mellitus (T2DM) and chronic kidney disease (CKD), and analyze the interaction effects and risk-modifying effect of dual metabolic trajectories on all-cause mortality. Methods This study included 7991 patients with T2DM and CKD based on the Tianjin medical insurance data platform. Group-based trajectory modeling (GBTM) was employed to identify longitudinal trajectory patterns of LDL-C and HbA1c, and dual metabolic trajectory groups were constructed to evaluate their synergistic effects. LASSO regression was applied for feature selection. Multivariable Cox proportional hazards regression with a dual-reference group strategy was utilized to systematically quantify the combined risks of dual trajectories and specifically assess the risk modification value of intensive lipid lowering across different glycemic backgrounds. Results During a median follow-up of 5.10 (3.15-7.52) years, 405 deaths (5.1%) were recorded. Three LDL-C trajectories (Intensive Control, Standard Control, and High-Regression) and 3 HbA1c trajectories (Well-Controlled, Moderate Improvement, and Poorly Controlled) were identified. Dual metabolic disturbances demonstrated a significant dose-response gradient, with the "Lipid-Poor/Glucose-Poor" group exhibiting the highest mortality risk (HR=5.550, 95% CI: 3.322-9.274, P<0.001), far exceeding the additive risk of single-indicator abnormalities. Even with well-controlled HbA1c, the high-regression LDL-C trajectory independently increased mortality risk (HR=2.015, P=0.039). Conversely, under intensive LDL-C control, the excess risk associated with poorly controlled HbA1c was no longer significant (P=0.480). Interaction analysis confirmed that for patients with poorly controlled HbA1c, intensifying LDL-C to a deep control level (<1.8 mmol/L) had a significant buffering protective effect compared to standard lipid lowering, reducing the mortality risk by 51% (HR=0.49, 95% CI: 0.26-0.92, P=0.026); in contrast, de-escalating from intensive to standard control increased the risk by 99% (HR=1.99, 95% CI: 1.07-3.69, P=0.029). Conclusion This study reveals for the first time the longitudinal synergistic evolution of glucose and lipid metabolic trajectories in patients with T2DM and CKD and their superimposed impact on prognosis. Intensive lipid lowering (LDL-C<1.8 mmol/L) confers a significant protective effect in patients with difficulty in glycemic management and serves as an effective compensatory strategy to improve patient prognosis.

Key words: type 2 diabetes mellitus, chronic kidney disease, low-density lipoprotein cholesterol, glycated hemoglobin, group-based trajectory modeling, all-cause mortality, interaction effect