1.Serpina3c Mitigates Adipose Tissue Inflammation by Inhibiting the HIF1α-Mediated Endoplasmic Reticulum Overoxidation in Adipocytes
Yu JIANG ; Jia-Qi GUO ; Ya WU ; Peng ZHENG ; Shao-Fan WANG ; Meng-Chen YANG ; Gen-Shan MA ; Yu-Yu YAO
Diabetes & Metabolism Journal 2026;50(1):62-76
Background:
Visceral white adipose tissue (vWAT) inflammation is a critical pathology of obesity-caused heart damage and is closely associated with adipocyte endoplasmic reticulum (ER) dysfunction. Serine (or cysteine) peptidase inhibitor, clade A, member 3C (Serpina3c) has been identified as an adipokine with anti-vWAT inflammatory effects. However, it remains unclear whether Serpina3c deficiency promotion of vWAT inflammation involves adipocyte ER dysfunction and whether it further contributes to heart damage in obesity.
Methods:
Wild type and Serpina3c knockout (Serpina3c–/–) mice were fed a high-fat diet (HFD) for 12 weeks. An adeno-associated virus (AAV) was injected locally into epididymal white adipose tissue (eWAT) of Serpina3c–/– mice to induce eWAT-adipocyte- specific overexpression of Serpina3c (AAV-Serpina3c) or knockdown of hypoxia-inducible factor 1α (AAV-shHIF1α). In vitro experiments were performed in 3T3-L1 adipocytes.
Results:
Serpina3c–/– mice exhibited more severe eWAT, serum and heart inflammation after HFD feeding. Consistently, these adverse phenotypes were mitigated in AAV-Serpina3c and AAV-shHIF1α mice. Mechanistically, ER oxidoreductase 1α (Ero1α) and protein disulfide isomerase (PDI) family members PDIA3 and PDIA4 were found to be target genes of HIF1α. In the obese mice, Serpina3c deficiency caused adipocyte more hypertrophy, and activated HIF1α-Ero1α/PDI mediated ER overoxidation and ER stress in eWAT. Subsequently, this led to increased adipocyte apoptosis and chemokine production and decreased adiponectin expression, which promoted macrophage infiltration and M1 polarization in eWAT, thus exacerbating eWAT inflammation and ultimately facilitating serum and distal heart inflammation.
Conclusion
These findings indicate that Serpina3c is a significant regulator of adipocyte ER redox homeostasis, thus highlighting Serpina3c as a potential therapeutic target for obesity-related eWAT inflammation and heart damage.
2.Interleukin-1β as target to induce synthetic lethality in KRAS mutant biliary tract cancer
Shijie LI ; Yukai SHAN ; Tianen CHEN ; Win TOPATANA ; Sarun JUENGPANICH ; Ziyi LU ; Yuchao SUN ; Tianao XIE ; Ruijing RUIJING ; Lidan HOU ; Jiang CHEN ; Guojun CHEN ; Jiemin LV ; Xianjue MA ; Pengjuan GUO ; Dan Gabriel DUDA ; Xiujun CAI ; Mingyu CHEN
Clinical and Molecular Hepatology 2026;32(2):904-918
Background/Aims:
Biliary tract cancer (BTC) frequently harbors KRAS mutations, which are associated with resistance to traditional treatment and a poor prognosis. Synthetic lethality (SL) strategy may provide other targets of KRAS. Therefore, we aim to identify and validate potential therapeutic targets of KRAS for the treatment of BTC via SL.
Methods:
The dependency (DepMap) projects were used to predict the synthetic lethal gene of KRAS. FDA-approved anticancer drug library was applied to screen potential drugs effective against KRAS-mutant BTC. Furthermore, the synthetic lethal effects or corresponding mechanisms of potential genes and drugs on BTC were investigated using KRAS-mutant and KRAS-wild type BTC cell lines, patient-derived xenografts (PDX), and KRAS oncogene-driven tumor models, as well as other KRAS-mutant cancer cell lines.
Results:
Initially, we discovered that the loss of GATA2 reduced the viability of KRAS-mutant but not KRAS-wild-type BTC. Subsequently, the drug library screened out disulfiram, which primarily exerts a synthetic lethal effect by inhibiting interleukin-1β (IL-1β) in KRAS-mutant BTC. Mechanistically, GATA2 specifically enhanced the transcription of IL-1β to promote NF-κB signaling in KRAS-mutant BTC. IL-1β inhibition phenocopied GATA2 deficiency, leading to reduced KRAS-mutant BTC viability. These synthetically lethal effects were confirmed using PDX, a KRAS oncogene-driven tumor model, as well as in other KRAS-mutant cancer cell lines.
Conclusions
In summary, these results indicate that inhibiting GATA2/IL1β could be a therapeutic strategy in KRAS-mutant BTC and potentially other cancers.
3.Impact of infusion of red blood cell suspension at different perioperative periods in patients with valvular heart disease: A propensity score matching study
Shan XU ; Bo FU ; Ao WEI ; Qian ZHANG ; Yaqing CAO ; Nan JIANG ; Zhigang GUO
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(05):772-777
Objective To investigate the impact of red blood cell suspension infusion across various perioperative periods on patients with valvular heart disease. Methods The patients with valvular heart disease admitted to Tianjin Chest Hospital from 2018 to 2020 were selected. Based on the timing of perioperative red cell suspension infusion, patients were categorized into three groups: a group 1 receiving intraoperative red cell suspension infusion, a group 2 receiving red cell suspension infusion within 24 hours after entering the ICU, and a group 3 receiving red cell suspension infusion at both time points. The laboratory results, perioperative blood component infusion volume, and other relevant parameters were retrospectively analyzed. After propensity score matching, the differences in different variables among the three groups were compared. Results After propensity score matching, 102 patients were enrolled, including 52 males and 50 females, with an average age of (61.74±10.58) years. There were 34 patients in each group. The preoperative hemoglobin (Hb) value of the group 2 was significantly higher than that of the group 1 and the group 3, and the amount of red cell suspension and autoblood transfusion was the lowest (P<0.05). Group 1 had the highest postoperative Hb, as well as the highest Hb and hematocrit (HCT) levels within 24 hours post-surgery (P<0.05). The group 1 had the lowest plasma, platelet and cryoprecipitate infusion volumes, and the shortest cardiopulmonary bypass time, aortic occlusion time, postoperative ICU stay and hospital stay, and the least blood loss and total drainage volume (P<0.05). The difference between postoperative and preoperative Hb (△Hb1) was highest in group 1 (P<0.05). Conclusion For patients with valvular heart disease, intraoperative-only infusion of red blood cell suspension is associated with a better prognosis at discharge and during follow-up.
4.Deoxyshikonin inhibits the proliferation, invasion, and tumor immune microenvironment in breast cancer cells by inactivating the PI3K/AKT/NF-κB pathway
Shaolan YU ; Dayan NIE ; Xia GUAN ; Lihui SHAN ; Xun YU ; Sanjun GUO
Nutrition Research and Practice 2026;20(2):167-181
BACKGROUND/OBJECTIVES:
Deoxyshikonin (DSK) has been reported to inhibit tumor growth in various types of cancers, but its roles and action mechanisms in breast cancer (BC) are unclear. This study examined the anti-cancer function and mechanism of DSK in BC.MATERIALS/METHODS: MDA-MB-231 and BT549, human BC cells, were used. The cell viability and apoptosis levels were examined using Cell Counting Kit-8 experiments and flow cytometry, respectively. The expression of apoptosis-related factors (Ki-67, Bax, and Bcl-2), CD206, CD168, and proteins involved in the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)uclear factor (NF)-κB pathway was evaluated by Western blot analysis. The cell invasion ability was determined using the Transwell experiment. The levels of interleukin (IL)-10 and transforming growth factor (TGF)-β were detected using an enzyme-linked immunosorbent assay. The in vivo functions of DSK were assessed using a xenograft mouse model.
RESULTS:
DSK inhibited cell proliferation, enhanced cell apoptosis, and reduced the cell invasion of MDA-MB-231 and BT549 cells. DSK also reduced the levels of CD206 and CD168 proteins, as well as IL-10 and TGF-β in phorbol 12-myristate 13-acetate-induced THP-1 cells.DSK downregulated the expression of the phosphorylated (p)-PI3K, p-AKT, and p-NF-κB proteins in cells. These effects were reversed by 740 Y-P (PI3K/AKT activator). In addition, DSK significantly reduced the tumor volume and weight in a xenograft mouse model. DSK increased the level of cell apoptosis and decreased the expression of Ki-67 and CD206 in subcutaneous tumor tissue. DSK also inactivated the PI3K/AKT/NF-κB pathway proteins.
CONCLUSION
DSK inhibits the proliferation, invasion, and tumor immune microenvironment of BC cells by inactivating the PI3K/AKT/NF-κB pathway, indicating that DSK may be a potential therapeutic option for BC treatment.
5.Policy analysis of family-school-society collaboration mechanisms for promoting students physical and mental health
Chinese Journal of School Health 2026;47(9):1240-1245
Objective:
To analyze the text structure, temporal evolution, and mechanism related shortcomings of policies related to family-school-society collaboration in promoting students physical and mental health in China, thereby providing a reference for improving collaborative mechanisms in the context of health promoting school development.
Methods:
The PKULAW Laws and Regulations Database was used as the data source. A total of 115 relevant policy documents issued by relevant departments from the founding of the People s Republic of China to May 7, 2026, were included. Drawing on the adolescent health policy analysis framework and adapting it to the Chinese contexts of family-school-society collaborative education, health promoting school development, and interdepartmental collaborative governance, policy text analysis was conducted. Multi label coding was applied to 629 semantic units, and fractional counting was used to calculate the weights of 6 main dimensions and 31 subdimensions and to describe the dimensional composition of the policies and its changes over time.
Results:
Policies related to family-school-society collaboration in promoting students physical and mental health gradually evolved from early principle based collaboration centered on the ideological and moral development of minors into institutional arrangements supported by the Healthy China initiative, the legal institutionalization of family education, collaborative education mechanisms, and health promoting school development. Among the 6 main dimensions, policy features and costs accounted for 54.8% of the total weight, followed by implementation considerations (22.9%), monitoring and evaluation (9.5%), policy appropriateness (5.6%), inclusion and coverage (4.8%), and participatory approach (2.5%). At the subdimension level, proposed interventions, target population characteristics, intersectoral linkages, consideration of adolescents social ecology, and goal setting accounted for 18.7%, 16.0%, 12.0%, 9.6%, and 9.4% of the total weight, respectively, whereas adolescent participation and the incorporation of young people s voices accounted for only 0.3% and 0.1% , respectively. These findings indicated that the policy texts focused primarily on problem identification, target population specification, and implementation arrangements, while provisions concerning students active participation, identification of differentiated needs, and support from disaggregated data remained relatively limited.
Conclusions
China has established a policy framework for family-school-society collaboration in promoting students physical and mental health that emphasizes goal setting, responsibility division, and organizational implementation, while gradually extending to specific health promotion tasks. Nevertheless, policy provisions concerning students active participation, the identification of differentiated needs, stratified and category specific monitoring, and the use of evaluation feedback require further specification.
6.The current status and influencing factors analysis of frailty in peritoneal dialysis patients at home
Lei ZHANG ; Fang NIE ; Wenjun PENG ; Liqun GUO ; Shan LIU ; Xinyue HUANG ; Zhifen FENG
Chinese Journal of Nursing 2025;60(11):1366-1372
Objective To investigate the current situation of frailty in patients with home peritoneal dialysis and analyze its influencing factors,so as to provide bases for early identification of high-risk groups and targeted clinical intervention.Methods From October to December 2024,205 home-based peritoneal dialysis patients under long-term follow-up at a tertiary A hospital in Zhongshan,Guangdong Province,were selected by convenience sampling.The General Information Questionnaire,Fried Phenotype Scale,Nutritional Risk Screening Tool,Exercise Self-Efficacy Scale,and Social Support Rating Scale were used to investigate the influencing factors of frailty in home-based peritoneal dialysis patients by ordinal logistic regression analysis.Results A total of 201 valid questionnaires were collected.The prevalence of frailty among home-based peritoneal dialysis patients was 24.3%,while 39.3%were in the pre-frailty stage,and 36.3%showed no frailty.0rdinal logistic regression analysis revealed that age,residence location,primary disease,sleep status,serum albumin concentration,and exercise self-efficacy level were influencing factors of frailty in the home peritoneal dialysis patients(P<0.05).Conclusion The incidence of frailty in patients with home peritoneal dialysis is higher,and patients with advanced age,living in rural areas,other types of primary diseases,insomnia,low serum albumin concentration and low exercise self-efficacy are more likely to develop frailty.Specialist doctors and nurses of peritoneal dialysis should pay attention to the early screening of frailty in patients with peritoneal dialysis at home,and take personalized intervention measures to prevent or delay the occurrence of frailty according to the relevant risk factors.
7.Effects of CO2 intracavitary laser combined with pelvic floor magnetic stimulation on surface electromyography of pelvic floor muscle and three-dimensional ultrasound parameters of pelvic floor in patients with female stress urinary incontinence
Tao HOU ; Li CHEN ; Shan HE ; Ping ZHOU ; Qijun ZHONG ; Xiaohu LI ; Hua ZHAO ; Yang CHEN ; Yanmei GUO
China Medical Equipment 2025;22(5):87-92
Objective:To investigate the effects of CO2 intracavitary laser combined with pelvic floor magnetic stimulation on surface electromyography(sEMG)values and pelvic floor three-dimensional ultrasound parameters in female patients with stress urinary incontinence(SUI).Methods:A prospective study was conducted on 92 female SUI patients treated at the outpatient department of Meizhou People's Hospital from October 2021 to July 2023.The patients were randomly divided into an observation group and a control group(n=46 each)using a random number table.Both groups received home-based pelvic floor muscle training.The control group additionally received pelvic floor magnetic stimulation,while the observation group was treated with CO2 intracavitary laser combined with pelvic floor magnetic stimulation.The urinary leakage status,treatment efficacy,pelvic floor muscle sEMG,pelvic floor three-dimensional ultrasound parameters,quality of life,and sexual quality of life were compared between the two groups.Assessments included the International Consultation on Incontinence Questionnaire-Short Form(ICIQ-SF),the Incontinence Impact Questionnaire-Short Form(IIQ-7),and the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire(PISQ-12).Results:1-hour leakage volume:0 g(observation group)vs.3 g(control group),24-hour leakage episodes:0 times(observation group)vs.0 times(control group),the observed differences were statistically significant(Z=-2.866,-2.355,P<0.05).Total effective rate:95.65%(observation)vs.58.70%(control),the observed differences were statistically significant(x2=4.083,P<0.05).Pelvic floor muscle sEMG(after treatment):Maximal fast contraction:(40.78±3.28)μV(observation)vs.(35.17±5.10)μV(control),Mean tonic contraction:(31.56±4.20)μV(observation)vs.(25.87±3.82)μV(control),Mean endurance contraction:(29.34±2.58)μV(observation)vs.(25.37±2.67)μV(control),all differences between the two groups were statistically significant(t=2.736,19.919,3.025,15.426,P<0.05).After treatment,both groups showed reductions in bladder neck descent(BND)during Valsalva maneuver,bladder-symphysis distance(BSD),urethral rotation angle(URA),and posterior vesicourethral angle(RVA).However,the observation group demonstrated significantly greater reductions compared to the control group(post-treatment data:observation group(24.30±3.21)mm,(2.34±0.23)mm,(56.40±5.87)°,(89.54±9.21)°;control group(26.21±3.48)mm,(3.57±0.35)mm,(60.29±6.45)°,(126.71±13.50)°.These differences were statistically significant(t=2.736,19.919,3.025,15.426,P<0.05).Similarly,both groups exhibited decreased scores on the ICIQ-SF and IIQ-7 scales,along with increased scores on the PISQ-12.Again,the observation group showed superior improvement,with statistically significant differences(t=11.478,13.168,6.631,P<0.05).Conclusion:On the basis of pelvic floor muscle training,CO2 intracavitary laser therapy combined with pelvic floor magnetic stimulation can effectively alleviate urinary incontinence symptoms in patients with female stress urinary incontinence(FSUI),enhance therapeutic efficacy,improve pelvic floor muscle strength and the stability of pelvic support structures,and promote quality of life and sexual function.
8.Comparison of efficacy and safety of crisaborole ointment 2% versus pimecrolimus cream 1% in the treatment of mild to moderate atopic dermatitis in children: a multicenter, randomized, controlled clinical trial
Xing XIAO ; Shan WANG ; Huan YANG ; Hong SHU ; Yanping GUO ; Jinping CHEN ; Yao LU ; Qinfeng LI ; Yuan LIANG ; Mutong ZHAO ; Xiaoyan LUO ; Limin MIAO ; Rui XU ; Xuemei LI ; Sha LAI ; Jianhong LI ; Zhen LUO ; Lu YU ; Lu XING ; Meitan WANG ; Xiaoli LI ; Haitao XU ; Ping LI ; Hua WANG ; Lin MA
Chinese Journal of Dermatology 2025;58(5):425-430
Objective:To compare the efficacy and safety of crisaborole ointment 2% versus pimecrolimus cream 1% in the treatment of mild to moderate atopic dermatitis in children aged 2 years or older.Methods:A multicenter, randomized, open-label, controlled clinical trial was conducted. A total of 120 pediatric patients aged 2 - 17 years with mild to moderate atopic dermatitis were enrolled from departments of dermatology of 8 hospitals in China between March 2022 and February 2023. The participants were randomly assigned in a 1∶1 ratio to the crisaborole group and the pimecrolimus group, and received the treatment with crisaborole ointment 2% and pimecrolimus cream 1% respectively, twice a day for 4 weeks. Visits were scheduled at baseline/on day 1, as well as on days 8, 15, and 29. The primary efficacy outcome was the percentage of patients achieving the Investigator's Static Global Assessment (ISGA) success (defined as clear [0] or almost clear [1] on the ISGA scale, combined with ≥ 2‐grade improvement from baseline) on day 29. The secondary efficacy outcomes included changes in the Eczema Area and Severity Index (EASI) total scores from baseline to day 29, percentages of patients achieving ISGA improvement (defined as clear [0] or almost clear [1] on the ISGA scale), as well as changes in the Peak Pruritus Numerical Rating Scale (NRS) scores, Dermatology Life Quality Index (DLQI) /Infants' Dermatology Life Quality Index (IDLQI) /Children's Dermatology Life Quality Index (CDLQI) scores, and in the Dermatitis Family Impact (DFI) scores. Drug safety was evaluated according to the incidence of adverse events. Categorical data were compared using the chi-square test. Since measurement data did not follow a normal distribution, the rank sum test was used for comparisons of measurement data between groups.Results:A total of 106 children with mild to moderate atopic dermatitis were included in the per-protocol analysis set, with 52 in the crisaborole group (26 males and 26 females) and 54 in the pimecrolimus group (27 males and 27 females). There were no significant differences in age, disease duration, ISGA and EASI scores at baseline between the two groups (all P > 0.05). On day 29, 22 patients (42.31%) in the crisaborole group and 25 (46.30%) in the pimecrolimus group achieved ISGA success, with no significant difference between the two groups ( χ2 = 0.17, P = 0.68) ; 35 patients (67.31%) in the crisaborole group and 45 (83.33%) in the pimecrolimus group achieved ISGA improvement, also with no significant difference between the two groups ( χ2 = 3.68, P = 0.06) ; additionally, there were no significant differences in the EASI, pruritus NRS, DLQI/IDLQI/CDLQI, or DFI scores between the two groups (all P > 0.05). Adverse reactions to the two topical agents were mainly local reactions such as mild to moderate pain, itching, or worsening of itching, and no obvious systemic adverse reactions occurred. The incidence of drug-related adverse reactions was 46.15% (24 cases) in the crisaborole group and 37.04% (20 cases) in the pimecrolimus group, with no significant difference between the two groups ( χ2 = 0.91, P = 0.34) . Conclusion:The efficacy of crisaborole ointment 2% was comparable to that of pimecrolimus cream 1% in the treatment of mild to moderate atopic dermatitis in children aged ≥ 2 years, and it yielded early and rapid improvement in the quality of life of patients and their families, with good safety and tolerability profiles.
9.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
10.Relationship between postoperative delirium and concentrations of phosphatidylethanolamine-binding protein 1 in cerebrospinal fluid of elderly patients undergoing total knee/hip arthroplasty
Zongfeng GUO ; Xiang WANG ; Yulan SHAN ; Weiwei TAN ; Zongxiao GUO
Chinese Journal of Anesthesiology 2025;45(1):53-58
Objective:To evaluate the relationship between postoperative delirium (POD) and concentrations of phosphatidylethanolamine-binding protein 1 (PEBP1) in cerebrospinal fluid (CSF) of elderly patients undergoing total knee and hip arthroplasty.Methods:In this case-control study, 375 elderly patients of both sexes, aged ≥65 yr, of American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ, scheduled for elective total knee and hip arthroplasty under combined spinal-epidural anesthesia at Haian Hospital Affiliated to Nantong University from November 2022 to June 2024, were selected. The perioperative clinical data were collected. CSF was drawn before anaesthesia for determination of the concentrations of PEBP1, Abeta 42 (Aβ 42), total tau (t-tau) and phosphorylated tau (p-tau) by enzyme-linked immunosorbent assay. The occurrence of postoperative delirium was evaluated using the Confusion Assessment Method at 1-7 days after operation. The severity of POD was assessed using a Memorial Delirium Assessment Scale. The patients were divided into POD group and non-POD group based on whether POD occurred. The influencing factors of POD were analyzed using multivariate logistic regression. Mediating effects were assessed to determine whether the levels of Aβ 42, p-tau and t-tau in CSF mediated PEBP1′s effect on POD. The accuracy of CSF PEBP1 concentration in predicting POD was evaluated using the receiver operating characteristic curve. Results:Decreased concentration of Aβ 42 in CSF, decreased ratios of Aβ 42/p-tau and Aβ 42/t-tau in CSF, and increased concentrations of PEBP1, p-tau and t-tau in CSF were independent risk factors for POD ( P<0.05). The results of mediation analysis showed that the relationship between PEBP1 and POD was partially mediated by CSF Aβ 42 (15.0%) and Aβ 42/t-tau ratio (14.9%). The receiver operating characteristic curve showed that the accuracy of CSF PEBP1 concentrations in predicting the occurrence of POD was high (AUC=0.846, P<0.001). Conclusions:Preoperative elevated CSF PEBP1 concentration is a risk factor for POD. CSF Aβ 42 concentration and Aβ 42/t-tau ratio serve as key mediators in the the association between PEBP1 and POD. PEBP1 concentration is more accurate in predicting POD.


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