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1.陆军特色医学中心麻醉科,重庆 400042
2.陆军特色医学中心心血管外科,重庆 400042
3.野战外科研究所战伤休克与输血研究室/创伤、烧伤与复合伤国家重点实验室,重庆 400042
胡弋,E-mail:huyi921@sina.com
收稿:2026-05-12,
修回:2026-10-05,
录用:2026-07-22,
纸质出版:2026-10-25
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陈婧,杜远琳,陈薇等.右美托咪定对体外循环心脏瓣膜置换术后谵妄的防治机制研究[J].局解手术学杂志,2026,35(10):879-884.
CHEN Jing,DU Yuan-lin,CHEN Wei,et al.Mechanisms underlying the preventive and therapeutic effects of dexmedetomidine on postoperative delirium following cardiac valve replacement under cardiopulmonary bypass[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2026,35(10):879-884.
陈婧,杜远琳,陈薇等.右美托咪定对体外循环心脏瓣膜置换术后谵妄的防治机制研究[J].局解手术学杂志,2026,35(10):879-884. DOI: 10.11659/jjssx.05E026058.
CHEN Jing,DU Yuan-lin,CHEN Wei,et al.Mechanisms underlying the preventive and therapeutic effects of dexmedetomidine on postoperative delirium following cardiac valve replacement under cardiopulmonary bypass[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2026,35(10):879-884. DOI: 10.11659/jjssx.05E026058.
目的
2
从代谢角度探索右美托咪定(DEX)调控术后谵妄(POD)的潜在机制,为POD的防治提供新思路。
方法
2
选择体外循环(CPB)下行心脏瓣膜置换术的患者60例,随机分为DEX组与对照组,每组30例。术后24 h采集2组患者的外周静脉血进行代谢组学分析,筛选差异代谢物及代谢通路。采用随机森林算法筛选DEX干预POD的关键生物标志物。
结果
2
DEX组术后24 h的POD发生率低于对照组(13.3%
vs
.36.7%),差异有统计学意义(
P
<
0.05)。代谢组学分析共检出50种差异代谢物,涉及组氨酸代谢、鞘脂代谢与信号通路等20条代谢通路。采用随机森林机器算法筛选出的5种关键差异代谢物为α-KIV、m¹A、SM(d18:1/20:0)、PAGln和DA3S。
结论
2
DEX可调控多种代谢物水平,其中可能主要通过上调m¹A、DA3S、PAGln,下调α-KIV、SM(d18:1/20:0)及相应代谢通路,发挥对CPB下心脏手术患者POD的防治作用。
Objective
2
To investigate the potential mechanisms by which dexmedetomidine (DEX) regulates postoperative delirium (POD) from a metabolic perspective,thereby providing new insights into the prevention and treatment of POD.
Methods
2
Sixty patients undergoing cardiac valve replacement under cardiopulmonary bypass (CPB) were randomly assigned to the DEX group and the control group,with 30 patients in each group. Metabolomic analysis was performed on peripheral venous blood samples collected 24 hours postoperatively from both groups to identify differential metabolites and metabolic pathways. A random forest algorithm was employed to identify key biomarkers associated with DEX intervention in POD.
Results
2
The incidence of POD at 24 hours after surgery in the DEX group was lower than that in the control group (13.3%
vs
.36.7%), and the difference was statistically significant(
P
<
0.05).A total of 50 differential metabolites were identified by metabolomic analysis, involving 20 metabolic pathways such as histidine metabolism, sphingolipid metabolism and signaling pathways.Five key differential metabolites screened by the random forest machine algorithm were α-KIV, m¹A, SM(d18:1/20:0), PAGln and DA3S.
Conclusion
2
DEX can regulate the levels of various metabolites. It may exert preventive and therapeutic effects on POD in patients undergoing cardiac surgery under CPB mainly by upregulating m¹A,DA3S and PAGln,downregulating α-KIV and SM(d18:1/20:0), and modulating the corresponding metabolic pathways.
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