天津医药 ›› 2025, Vol. 53 ›› Issue (1): 47-51.doi: 10.11958/20241526

• 临床研究 • 上一篇    下一篇

铁死亡与老年骨折患者术后认知功能障碍的相关性

张训功1(), 杨光辉1, 杜增利1, 薛培1, 马梓昆2   

  1. 1 河南中医药大学第五临床医学院(郑州人民医院)麻醉科(邮编450000),2 骨科
  • 收稿日期:2024-10-14 修回日期:2024-10-30 出版日期:2025-01-15 发布日期:2025-02-06
  • 作者简介:张训功(1985),男,副主任医师,主要从事麻醉学的临床与基础研究。E-mail:zhongyu566168@163.com
  • 基金资助:
    河南省医学科技攻关计划项目(LHGJ20220799)

Correlation between ferroptosis and post operative cognitive dysfunction in elderly patients with fractures

ZHANG Xungong1(), YANG Guanghui1, DU Zengli1, XUE Pei1, MA Zikun2   

  1. 1 Department of Anesthesiology, 2 Department of Orthopedics, the Fifth Clinical Medical College of Henan Universitey of Chinese Medicine (People's Hospital of Zhengzhou), Zhengzhou 450000, China
  • Received:2024-10-14 Revised:2024-10-30 Published:2025-01-15 Online:2025-02-06

摘要:

目的 探讨铁死亡与老年骨折患者术后认知功能障碍(POCD)的相关性。方法 120例老年骨折患者根据是否发生POCD分为对照组和POCD组,各60例。收集2组基线资料,术后6 h采用酶联免疫吸附试验检测神经损伤标志物脑髓鞘碱性蛋白(MBP)、胶质纤维酸性蛋白(GFAP)以及铁死亡标志物谷胱甘肽过氧化物酶4(GPX4)、环氧合酶2(COX2)、长链酰基辅酶A合酶4(ACSL4)水平;采用Logistic回归分析影响老年骨折患者发生POCD的危险因素;Pearson相关分析MBP、GFAP与GPX4、COX2、ACSL4的相关性;受试者工作特征(ROC)曲线分析MBP、GFAP、GPX4、COX2、ACSL4水平对POCD的预测价值。结果 POCD组年龄、全身麻醉比例、麻醉时间、术中出血量及MBP、GFAP、COX2、ACSL4水平均高于对照组,GPX4水平低于对照组(P<0.05)。MBP、GFAP与GPX4呈负相关,与COX2、ACSL4呈正相关(P<0.05)。高龄、全身麻醉、麻醉时间长,MBP、GFAP、COX2、ACSL4水平升高和GPX4水平降低是老年骨折患者发生POCD的独立危险因素(P<0.05)。GPX4、COX2、ACSL4预测老年骨折患者发生POCD的临界值分别为GPX4≤23.05 μg/L,COX2≥20.35 μg/L,ACSL4≥237.85 μg/L,ROC曲线下面积(AUC)分别为0.869、0.736、0.841,敏感度分别为76.67%、68.33%、88.33%,特异度分别为86.67%、78.33%、75.00%,其诊断效能均高于MBP和GFAP。结论 老年骨折患者发生POCD与铁死亡有关,术后GPX4、COX2、ACSL4水平对老年骨折患者发生POCD具有一定的预测价值。

关键词: 骨折, 术后认知功能障碍, 铁死亡, 老年人, 谷胱甘肽过氧化物酶4, 环氧化酶2, 酰基CoA脱氢酶,长链

Abstract:

Objective To analyze the correlation between ferroptosis and post operative cognitive dysfunction (POCD) in elderly patients with fractures.Methods A total of 120 elderly patients with fracture were divided into the control group and the POCD group according to whether POCD occurred, with 60 cases in each group. Basic data of the two groups were collected. The levels of nerve injury indicators [brain myelin basic protein (MBP), glial fibrillary acidic protein (GFAP)], and fractures markers [glutathione peroxidase 4 (GPX4), cyclooxygenase 2 (COX2), long-chain acyl-CoA synthase 4 (ACSL4)] were detected by enzyme-linked immunosorbent assay at 6 h after surgery. Logistic regression was used to analyze risk factors of POCD in elderly patients with fracture. The correlations between MBP, GFAP and GPX4, COX2 and ACSL4 were analyzed by Pearson correlation analysis. Receiver operating characteristic (ROC) curves were used to analyze predictive values of MBP, GFAP, GPX4, COX2 and ACSL4 levels to POCD.Results The age, proportion of general anesthesia, anesthesia time, intraoperative blood loss and MBP, GFAP, COX2, ACSL4 levels were higher in the POCD group than those in the control group (P<0.05), while GPX4 was lower than that in the control group (P<0.05). The levels of MBP and GFAP were negatively correlated with levels of GPX4 in elderly patients with fractures, and positively correlated with levels of COX2 and ACSL4 (P<0.05). Advanced age, general anesthesia, long duration of anesthesia, increased levels of MBP, GFAP, COX2 and ACSL4, and decreased level of GPX4 were independent risk factors for POCD in elderly fracture patients (P<0.05). The critical values of GPX4, COX2 and ACSL4 for predicting POCD in elderly patients with fractures were GPX4≤23.05 μg/L, COX2≥20.35 μg/L and ACSL4≥237.85 μg/L, and the AUC were 0.869, 0.736 and 0.841. The sensitivity was 76.67%, 68.33% and 88.33%, and the specificity was 86.67%, 78.33% and 75.00%, respectively. The diagnostic efficacy of GFAP, COX2 and ACSL4 was higher than that of MBP and GFAP.Conclusion The incidence of POCD in elderly patients with fracture is associated with ferroptosis, and levels of GPX4, COX2 and ACSL4 have certain predictive value for the incidence of POCD after surgery in elderly patients with fracture.

Key words: fractures, post operative cognitive dysfunction, ferroptosis, aged, glutathione peroxidase 4, cyclooxygenase 2, acyl-CoA dehydrogenase, long-chain

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