1.Collection, storage and utilization of lung transplant tissue samples
Yixing LI ; Xue SHI ; Hongyi WANG ; Runyi TAO ; Ye SUN ; Ailing SU ; Liyan TONG ; Jinteng FENG ; Yanpeng ZHANG ; Shuo LI ; Yawen WANG ; Guangjian ZHANG
Organ Transplantation 2025;16(1):147-155
After continuous development and improvement, lung transplantation has become the preferred means to treat a variety of benign end-stage lung diseases. However, the field of lung transplantation still faces many challenges, including shortage of donor resources, preservation and maintenance of donor lungs, and postoperative complications. Lung tissue samples removed after lung transplantation are excellent clinical resources for the study of benign end-stage lung disease and perioperative complications of lung transplantation. However, at present, the collection, storage and utilization of tissue samples after lung transplantation are limited to a single study, and unified technical specifications have not been formed. Based on the construction plan of the biobank for lung transplantation in the First Affiliated Hospital of Xi'an Jiaotong University, this study reviewed the practical experience in the collection, storage and utilization of lung transplant tissue samples in the aspects of ethical review, staffing, collection process, storage method, quality control and efficient utilization, in order to provide references for lung transplant related research.
2.Transcriptome sequencing analysis of gene expression differences in intestinal organoids of septic mice and the protective effects of myeloid differentiation factor 88 inhibitor.
Liyan GUO ; Na XUE ; Qing WANG ; Hongyun TENG ; Lili BAI ; Kai WEI ; Yuantao LI ; Qingguo FENG
Chinese Critical Care Medicine 2025;37(10):916-923
OBJECTIVE:
To elucidate the molecular mechanisms underlying sepsis-induced injury in mouse intestinal organoids and investigate the possible mechanisms or potential drug targets of myeloid differentiation factor 88 inhibitor [TJ-M2010-5 (TJ5)] on this condition.
METHODS:
Small intestinal organoids from C57BL/6 mice aged 6-8 weeks were established and characterized using immunofluorescence for cell growth and proliferation marker nuclear antigen Ki-67, goblet cell marker mucin-2 (MUC-2), epithelial cell marker E-cadherin, and Paneth cell marker lysozyme (Lyz). Small intestinal organoids after 3 days of passaging were divided into different groups: a normal control group treated with culture medium containing 0.2% dimethyl sulfoxide (DMSO) for 10 hours, a lipopolysaccharide (LPS) group treated with culture medium containing 200 mg/L LPS and 0.2% DMSO for 10 hours, and a TJ5 group pre-treated with 10 mmol/L TJ5 for 2 hours followed by treatment with culture medium containing 200 mg/L LPS for 10 hours. Real-time fluorescence quantitative reverse transcription-polymerase chain reaction (RT-qPCR) was used to measure the expression levels of interleukin-6 (IL-6) and zonula occludens-1 (ZO-1) in the small intestinal organoids. RNA transcriptome sequencing was performed on the small intestinal organoids from each group to analyze differentially expressed genes between groups, and significant enrichment was analyzed using gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG).
RESULTS:
By the 7th day of primary culture, mature organoids had formed, and their growth rate increased after passaging. Immunofluorescence identification showed expressions of Ki-67, MUC-2, E-cadherin, and Lyz, indicating that the mouse small intestinal organoids maintained their cellular composition and functional characteristics under in vitro culture conditions. RT-qPCR results showed that compared with the normal control group, the mRNA expression of IL-6 in the small intestinal organoids of the LPS group was significantly increased (2-ΔΔCT: 1.83±0.16 vs. 1.02±0.28, P < 0.05), while the mRNA expression of ZO-1 was significantly decreased (2-ΔΔCT: 0.53±0.11 vs. 1.01±0.18, P < 0.05). In contrast, the mRNA expression trends of both IL-6 and ZO-1 were reversed in the TJ5 group, showing statistically significant differences as compared with the LPS group (2-ΔΔCT: IL-6 mRNA was 1.24±0.01 vs. 1.83±0.16, ZO-1 mRNA was 1.97±0.29 vs. 0.53±0.11, both P < 0.05). RNA transcriptome sequencing showed 49 differentially expressed genes in the LPS group compared to the normal control group, with 42 upregulated and 7 downregulated. Compared to the LPS group, the TJ5 group showed 84 differentially expressed genes, with 47 upregulated and 37 downregulated. GO enrichment analysis of these differentially expressed genes showed that the significantly enriched biological processes of the differentially expressed genes between the normal control group and the LPS group included responses to LPS, responses to molecule of bacterial origin and responses to bacterium. The significantly enriched biological processes of the differentially expressed genes between the LPS group and the TJ5 group included glutathione metabolic processes, responses to stress cellular and responses to chemical stimulus. In molecular function groups, glutathione binding and oligopeptide binding were significantly enriched by the differentially expressed genes. In cellular component classifications, the enrichment of the differentially expressed genes was mainly observed in the cytoplasm, endoplasmic reticulum, and microsomes. KEGG pathway enrichment analysis indicated that the differentially expressed genes between the normal control group and LPS group were enriched in IL-17 signaling pathways, tumor necrosis factor (TNF) signaling pathways, viral protein interactions with cytokines and cytokine receptors signaling pathways, and cytokine-cytokine receptor interaction signaling pathways. In contrast, the differentially expressed genes between the LPS and TJ5 groups were mainly enriched in atherosclerosis signaling pathways, ferroptosis signaling pathways, glutathione metabolism signaling pathways, and cytochrome P450-mediated drug metabolism signaling pathways.
CONCLUSIONS
Mouse small intestinal organoids were successfully extracted and cultured. TJ5 may exert its protective effects by regulating gene expression and related signaling pathways (fluid shear stress and atherosclerosis, ferroptosis, glutathione metabolism, cytochrome P450 drug metabolism, etc.) in sepsis-injured mouse small intestinal organoids. These genes and signaling pathways may be key targets for treating sepsis-induced intestinal injury.
Animals
;
Mice
;
Sepsis/genetics*
;
Organoids/drug effects*
;
Mice, Inbred C57BL
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Intestine, Small/metabolism*
;
Gene Expression Profiling
;
Transcriptome
;
Lipopolysaccharides
3.Impact of ultra-early enteral nutrition support on the prognosis of young and middle-aged postoperative patients with cerebral hemorrhage
Lili BAI ; Qingguo FENG ; Hongyun TENG ; Liyan GUO ; Dangqing WANG ; Yuanzheng ZHANG
Chinese Critical Care Medicine 2024;36(9):985-988
Objective:To investigate the effect of ultra-early enteral nutrition (UEEN) support on the prognosis of young and middle-aged postoperative patients with cerebral hemorrhage.Methods:The clinical data of young and middle-aged patients (aged 18-59 years) admitted to Tianjin Fifth Central Hospital from January 2020 to June 2023 after surgery for intracerebral hemorrhage were retrospectively analyzed, and the general data, nutritional indexes, gastrointestinal complications, neurological function recovery and long-term prognosis of the patients were recorded. According to the time of initiation of enteral nutrition (EN) support, patients were divided into UEEN group (EN implementation within 12 hour after surgery) and early enteral nutrition (EEN) group (EN implementation within 24 to 48 hour after surgery). The differences of the above indexes between the two groups were analyzed and compared.Results:A total of 64 young and middle-aged postoperative patients with cerebral hemorrhage were enrolled, including 32 cases in the UEEN group and 32 cases in the EEN group. There were no significant differences in gender, age, proportion of hypertension and diabetes, Glasgow coma score (GCS) on admission and surgical methods between the two groups. In terms of nutritional indexes, serum total protein, albumin and hemoglobin levels of patients in both groups on day 7 after admission were lower than those on day 1, and higher than those on day 3, and the above indexes levels in UEEN group were significantly higher than those in EEN group on day 7 [total protein (g/L): 63.05±5.79 vs. 59.02±6.63, albumin (g/L): 40.40±5.26 vs. 37.66±4.63, hemoglobin (g/L): 133.33±12.58 vs. 123.80±22.12, all P < 0.05]. In terms of gastrointestinal complications, the incidence of stress ulcer in the UEEN group within 14 days after admission was significantly lower than that in the EEN group [12.5% (4/32) vs. 31.3% (10/32), P < 0.05], but there was no statistically significant difference in feeding intolerance symptoms between the two groups. In terms of neurological recovery and long-term prognosis, GCS scores and Barthel index scores of 14 days after admission were higher than those of 1 day after admission, but there was no statistical significance between the two groups. Six months after surgery, Glasgow outcome scale (GOS) and Barthel index score of the UEEN group were significantly higher than those of the EEN group (GOS score: 3.81±1.06 vs. 3.18±1.07, Barthel index score: 60.78±7.24 vs. 54.52±5.13, both P < 0.05). Conclusion:UEEN support can improve the nutritional level of young and middle-aged postoperative patients with cerebral hemorrhage, reduce the occurrence of postoperative gastrointestinal complications, promote the recovery of neurological function, and improve the long-term prognosis.
4.Correlation between insomnia,gastrointestinal symptoms,and glycated hemoglobin in patients with type 2 diabetes:a cross-sectional study based on the co-management platform of three disciplines of diabetes
Bo LI ; Qi YUAN ; Yongfa WANG ; Youjian FENG ; Guimiao WANG ; Weidong NIAN ; Yi ZHOU ; Tianchi HU ; Sisi MA ; Liyan JIA ; Zhihai ZHANG ; Jin LI ; Bing YAN ; Nengjiang ZHAO ; Shuyu YANG
Journal of Beijing University of Traditional Chinese Medicine 2024;47(7):989-997
Objective To investigate the relationship between insomnia,gastrointestinal symptoms,and glycosylated hemoglobin(HbA1c)levels in individuals diagnosed with type 2 diabetes mellitus(T2DM),as well as the related influencing factors.Methods A total of 910 T2DM patients treated in our multicenter from January 2022 to December 2022 were enrolled in this study.General information(gender,age,smoking and drinking history,exercise,course of disease,treatment and complications),HbA1c,Athens Insomnia Scale(AIS)scores and Gastrointestinal Symptoms Rating Scale(GSRS)scores of patients were collected.The differences of sleep and gastrointestinal symptoms between groups were analyzed,and the correlation between the differences and HbA1c was analyzed.Furthermore,the risk factors for non-standard HbA1c were analyzed.Results The AIS score and GSRS score in the HbA1c control group were less than those in the non-standard group(P<0.01).Insomnia was reported by 37.0%of T2DM patients,and the HbA1c level in the insomnia group was significantly higher than that in the non-insomnia group(10.00%±2.38%vs.8.26%±1.73%,P<0.01).Gastrointestinal symptoms were present in 57.5%of T2DM patients,and the HbA1c levels in the group with gastrointestinal symptoms were significantly higher than those in the group without gastrointestinal symptoms(9.26%±2.23%vs.8.43%±1.98%,P<0.01).Furthermore,26.3%of T2DM patients experienced both insomnia and gastrointestinal symptoms.Remarkably,the HbA1c levels in the group with both insomnia and gastrointestinal symptoms were significantly higher than those in the group without either condition(10.18%±2.44%vs.8.45%±1.86%,P<0.01).Correlation analysis demonstrated a significant association between sleep quality,gastrointestinal function,and HbA1c levels(P<0.01).The logistic regression analysis result revealed that age,GSRS score,AIS score,and the presence of insomnia combined with gastrointestinal symptoms were independent risk factors for predicting HbA1c≥6.5%(P<0.01).Having both insomnia and gastrointestinal symptoms concurrently was the strongest risk factor for substandard HbA1c control,and the risk of blood sugar control may increase about 5 times when both appear together.Conclusion Insomnia and gastrointestinal symptoms are common comorbidities in T2DM patients,showing a cross-interfering relationship,and they appear together with poor blood sugar control,interact causally,and amplify each other.
5.Prognostic performance of pulmonary effective arterial elastance in patients with heart failure
Yihang WU ; Boping HUANG ; Jiayu FENG ; Liyan HUANG ; Xuemei ZHAO ; Jing WANG ; Jingyuan GUAN ; Xinqing LI ; Yuhui ZHANG ; Jian ZHANG
Chinese Journal of Cardiology 2024;52(4):397-404
Objective:To explore the predictive value of pulmonary effective arterial elastance (Ea) in patients with heart failure (HF).Methods:This is a retrospective cohort study, which retrospectively included 284 patients with HF who underwent right heart catheterization at Heart Failure Center in Fuwai Hospital between September 2013 and February 2022. Data regarding baseline clinical characteristics, hemodynamic profiles, and prognosis were collected. Ea was calculated as mean pulmonary arterial pressure/stroke volume. Patients were divided into Ea<0.555 group and Ea≥0.555 group according to the median value of Ea (0.555 mmHg/ml, 1 mmHg=0.133 kPa). The primary outcome was the primary clinical event, set as the first occurrence of a series of composite events, including all-cause death, heart transplantation, left ventricular assist device implantation, and HF rehospitalization. Event-free survival was defined as the absence of primary clinical events. Spearman correlation analysis was used to calculate the correlation coefficient between Ea and parameters reflective of right heart function. The Kaplan-Meier analysis was used to compare the different groups for the estimation of outcomes with the log-rank test. We used Cox proportional-hazards regression models to estimate hazard ratios ( HR) for primary clinical event. Subgroup analysis was performed based on the age, gender, New York Heart Association (NYHA) functional class, left ventricular ejection fraction, presence of pulmonary hypertension, and serum N-terminal pro-B-type natriuretic peptide (NT-proBNP) values. We used receiver operating characteristic (ROC) curve to calculate the area under the curve ( AUC) of Ea for predicting event-free survival in patients with HF. Results:The median age was 51 years, and 206 (72.5%) patients were male. Ea and pulmonary vascular resistance (PVR) were significantly correlated ( r=0.698, P<0.001). The correlation between Ea and pulmonary arterial elastance (PAC) were even more significant ( r=-0.888, P<0.001). Compared with Ea<0.555 group, Ea≥0.555 group presented with higher serum NT-proBNP values (4 443 (1 792, 8 554) ng/L vs. 1 721 (480, 4 528)ng/L, P<0.001), higher PVR (3.4 (2.5, 4.7) Wood vs. 1.4 (0.9, 2.2) Wood, P<0.001), lower cardiac output (3.0 (2.3, 3.9) L/min vs. 4.3 (3.8, 4.9) L/min, P<0.001), and lower PAC (1.6 (1.3, 2.0) ml/mmHg vs. 4.0 (3.0, 6.0) ml/mmHg, P<0.001). The median follow-up time was 392 (166, 811) days. The Kaplan-Meier survival curve demonstrated a lower event-free survival rate in the Ea≥0.555 group compared to the Ea<0.555 group ( Plog-rank<0.001). After multivariate adjustment, Ea ( HR=1.734, P<0.001) remained significantly associated with the primary outcome. Subgroup analysis indicated that Ea was associated with the primary outcome across all subgroups. The AUC was 0.724 ( P<0.001) for Ea to predict event-free survival calculated from ROC analysis. Conclusions:Ea is closely related to parameters reflective of right ventricular afterload. Increased Ea is an independent predictor of adverse outcomes in patients with HF.
6.Clinical comprehensive evaluation of recombinant Mycobacterium tuberculosis fusion protein
Xiaofeng NI ; Sha DIAO ; Siyi HE ; Xuefeng JIAO ; Xiao CHENG ; Zhe CHEN ; Zheng LIU ; Linan ZENG ; Deying KANG ; Bin WU ; Chaomin WAN ; Binwu YING ; Hui ZHANG ; Rongsheng ZHAO ; Liyan MIAO ; Zhuo WANG ; Xiaoyu LI ; Maobai LIU ; Benzhi CAI ; Feng QIU ; Feng SUN ; Naihui CHU ; Minggui LIN ; Wei SHA ; Lingli ZHANG
China Pharmacy 2023;34(4):391-396
OBJECTIVE To evaluate the effectiveness, safety, economy, innovation, suitability and accessibility of recombinant Mycobacterium tuberculosis fusion protein (EC), and to provide evidence for selecting skin detection methods for tuberculosis infection diagnosis and auxiliary diagnosis of tuberculosis. METHODS The effectiveness and safety of EC compared with purified protein derivative of tuberculin (TB-PPD) were analyzed by the method of systematic review. Cost minimization analysis, cost-effectiveness analysis and cost-utility analysis were used to evaluate the short-term economy of EC compared with TB-PPD, and cost-utility analysis was used to evaluate the long-term economy. The evaluation dimensions of innovation, suitability and accessibility were determined by systematic review and improved Delphi expert consultation, and the comprehensive score of EC and TB-PPD in each dimension were calculated by the weight of each indicator. RESULTS The scores of effectiveness, safety, economy, innovation and suitability of EC were all higher than those of TB-PPD. The affordability scores of the two drugs were consistent, while the availability score of EC was lower than those of TB-PPD. After considering dimensions and index weight, the scores of effectiveness, safety, economy, innovation, suitability, accessibility and the comprehensive score of EC were all higher than those of TB-PPD. CONCLUSIONS Compared with TB-PPD, EC performs better in all dimensions of effectiveness, safety, economy, innovation, suitability and accessibility. However, it is worth noting that EC should further improve its availability in the dimension of accessibility.
7.Extraction Technology of Volatile Oil from Wenjing Huoxue Cataplasm
Huili PENG ; Lina ZHAO ; Yanqin CHENG ; Liyan ZHAO ; Yinglu FENG ; Mingchun LI
Journal of Pharmaceutical Practice 2023;41(8):492-495
Objective To optimize the supercritical CO2 extraction conditions of volatile oil from Wenjing Huoxue cataplasm. Methods On the basis of single factor investigation on the comprehensive score of extraction yield , osthole content and isoimperatorin, the effects of extraction temperature, pressure and time on the comprehensive score of extracted volatile oil were optimized by orthogonal design. Results In the single factor experiment, the factors that had a great influence on the comprehensive score of the extracted volatile oil were extraction temperature, extraction pressure and extraction time. The orthogonal experiment results showed that the extraction temperature and extraction pressure had a significant influence on the comprehensive score of volatile oil. The optimized extraction process was as follows: extraction temperature at 55 ℃, extraction pressure as 30 MPa, and extraction time as 2 h. Conclusion The extraction process optimized in this experiment is stable and feasible, which could be used for the extraction and preparation of the volatile oil.
8.Effect of Sanhuang Tangshenkang on Wnt/β-catenin Signaling Pathway in Bone Tissue of Diabetic Rats
Liya SUN ; Liyan GU ; Bei LIU ; Jiaxi WANG ; Yinan FENG ; Yue XI
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(18):69-77
ObjectiveTo observe the effect of Sanhuang Tangshenkang on the Wnt/β-catenin signaling pathway in the bone tissue of diabetic rats. MethodA high-sugar and high-fat diet was administered for 4 weeks, along with intraperitoneal injection of freshly prepared 2% streptozotocin (pH 4.5) at 30 mg·kg-1 body weight to induce a diabetes model in rats. The rats with diabetes were randomly divided into model group, low- and high-dose Sanhuang Tangshenkang groups (12.8, 38.4 g·kg-1), and Gushukang group (1.8 g·kg-1) according to the blood glucose level. Rats of the same age were fed on a regular diet and assigned to the control group. After 12 weeks of respective treatments with drugs or physiological saline, the fasting blood glucose (FBG) levels of the rats were measured using an automated biochemical analyzer. Enzyme-linked immunosorbent assay (ELISA) was used to detect fasting serum insulin (FINS), bone-specific alkaline phosphatase (BALP), and tartrate-resistant acid phosphatase (TRAP) levels. Micro-computed tomography (Micro-CT) was used to scan the femurs of rats to observe bone tissue microstructure and measure bone mineral density (BMD). Hematoxylin-eosin (HE) staining and safranin O/fast green staining were performed to observe pathological changes in the femoral bone tissue. Immunohistochemistry (IHC) and Western blot were used to detect the expression of Wnt3a, low-density lipoprotein receptor-related protein 5 (LRP-5), and β-catenin proteins. ResultCompared with the control group, the model group showed a significant increase in FBG, FINS, and TRAP levels (P<0.01), a significant decrease in BALP level (P<0.01), a significant decrease in BMD (P<0.01), and disorganized, elongated, and sparse bone trabecular structures with fractures and increased lipid droplets. Additionally, the expression of Wnt3a, LRP-5, and β-catenin proteins decreased (P<0.05, P<0.01). Compared with the model group, the low- and high-dose Sanhuang Tangshenkang groups showed a reduction in FBG and an increase in BALP (P<0.05). The low-dose Sanhuang Tangshenkang group also exhibited a decrease in FINS (P<0.05). All treatment groups showed a significant decrease in TRAP (P<0.01), varying degrees of improvement in BMD (P<0.05, P<0.01)), increased and denser bone trabeculae with more regular arrangements and reduced lipid droplets, and improved bone microstructure morphology. The average optical density values of Wnt3a, LRP-5, and β-catenin proteins were significantly increased in all drug-treated groups (P<0.05, P<0.01), and the expression of Wnt3a, LRP-5, and β-catenin proteins was elevated (P<0.05, P<0.01). ConclusionSanhuang Tangshenkang may regulate the imbalance of the Wnt/β-catenin signaling pathway by increasing the expression of Wnt3a, LRP-5, and β-catenin proteins in bone tissue, which may promote bone formation, reduce bone resorption, and lower blood glucose levels, thereby achieving the effect of preventing and treating diabetic osteoporosis.
9.Establishment of HPLC fingerprints for Ardisia crenata,Sophora tonkinensis and their couplet medicines and content determination of 5 chemical components
Yun CHEN ; Hui SHI ; Tingting FENG ; Liyan ZHANG ; Xiu DONG ; Jinhe ZHANG ; Bei HUANG ; Ying ZHOU
China Pharmacy 2023;34(16):1949-1954
OBJECTIVE To establish the fingerprints of Ardisia crenata, Sophora tonkinensis and their couplet medicines, and to determine the contents of five components in them. METHODS Using water as solvent, single lyophilized powder of A. crenata and S. tonkinensis and combined lyophilized powder of their couplet medicines were prepared by combining lyophilization technology. The fingerprints of three lyophilized powder samples were established by using high-performance liquid chromatography (HPLC), and the contents of 5 kinds of components such as gallic acid were determined simultaneously. RESULTS There were 5, 10 and 14 common peaks in the fingerprints for single lyophilized powder of A. crenata and S. tonkinensis and combined lyophilized powder of their couplet medicines; the similarities of them with the control fingerprints were all greater than 0.90. For combined lyophilized powder of couplet medicines, peak 3 Δ 基金项目 国家重点研发计划项目(No.2018YFC1708100);贵 州省科技计划项目(No.黔科合基础-ZK〔2022〕一般483,No.黔科合成 was identified as gallic acid, peak 4 as matrine, peak 6 as 果〔2021〕一般137);贵州省教育厅高等学校科学研究项目(青年项目) oxymatrine, peak 8 as bergenin, and peak 14 as trifolirhizin. In single lyophilized powder of A. crenata, the average contents of gallic acid and bergenin were 0.499 3 and 4.962 6 mg/g, respectively. In single lyophilized powder of S.tonkinensis, the average contents of matrine, oxymatrine and trifolirhizin were 3.046 0, 2.336 6 and 0.278 6 mg/g, respectively. In combined lyophilized powder of couplet medicines, the average contents of gallic acid, matrine, oxymatrine, bergenin and trifolirhizin were 0.560 6, 2.548 7, 1.382 2, 5.960 7 and 0.279 1 mg/g, respectively. The transfer rates were 8.87%-513.19%. CONCLUSIONS The established fingerprint and content determination methods are stable and feasible, and can be used for the quality control of A. crenata and S. tonkinensis and their couplet medicines. The average contents of matrine and oxymatrine in combined lyophilized powder of A. crenata-S. tonkinensis couplet medicines are decreased.
10.Correlation between 95% spectral edge frequency and depth of anesthesia in patients with schizophrenia
Haiyan CHEN ; Wenbin HOU ; Feng LI ; Liyan ZHENG ; Wei TANG
Chinese Journal of Primary Medicine and Pharmacy 2022;29(6):877-883
Objective:To investigate the value of 95% spectral edge frequency (SEF) in identifying the depth of anesthesia in patients with schizophrenia subjected to modified electroconvulsive therapy center.Methods:A total of 195 patients with schizophrenia who received treatment in The Affiliated Kangning Hospital of Wenzhou Medical University in April to December 2020 were included in this study. They were randomly divided into three groups with 65 patients each. Three groups of patients received different doses of anesthesia before undergoing MECT as follows: group A: propofol 1.5 mg/kg, atropine 0.5 mg/kg, succinylcholine chloride 1.0 mg/kg; group B: propofol 2.0 mg/kg, atropine 0.5 mg/kg, succinylcholine chloride 1.0 mg/kg; group C: propofol 2.5 mg/kg, atropine 0.5 mg/kg, succinylcholine chloride 1.0 mg/kg. 95% SEF and bispectral index (BIS) were measured when patients were awake before treatment (T 1), when eyelash reflex disappeared (T 2), at the beginning of electrical stimulation (T 3), at 3 minutes after electrical stimulation (T 4), and when patients were completely awake (T 5) and compared between groups. The incidence of adverse reaction was recorded at 1 day after treatment. Results:At T 1-T 5, 95% SEF in the group A was (28.50 ± 0.87) Hz, (21.49 ± 0.91) Hz, (21.99 ± 0.92) Hz, (28.42 ± 1.29) Hz, (28.40 ± 1.15) Hz respectively, and it was (28.34 ± 0.91) Hz, (18.93 ± 0.86) Hz, (19.05 ± 0.83) Hz, (27.54 ± 0.73) Hz, (28.42 ± 1.21) Hz respectively in group B and (28.26 ± 0.90) Hz, (16.41 ± 0.75) Hz, (16.36 ± 0.75) Hz, (26.58 ± 0.64) Hz, (28.48 ± 1.19) Hz respectively in group C. 95% SEF measured at T 2 ( t = 24.49, 48.60, both P < 0.05), T 3 ( t = 28.47, 54.51, both P < 0.05), and T 4 ( t = 7.61, 15.91, both P < 0.05) in groups B and C were significantly lower than those in group A. 95% SEF measured at T 2 ( t = 24.11, P < 0.05), T 3 ( t = 26.04, P < 0.05) and T 4 ( t = 8.30, P < 0.05) in group C were significantly lower than those in group B. At T 1-T 5, BIS in group A was (94.16 ± 2.07), (55.34 ± 1.93), (56.61 ± 1.84), (76.29 ± 1.94) and (93.84 ± 2.39) respectively, and it was (94.51 ± 2.25), (52.39 ± 1.58), (52.45 ± 1.94), (73.58 ± 2.19), (93.28 ± 2.52) respectively in group B and (93.97 ± 2.16), (50.57 ± 1.96), (51.60 ± 2.03), (69.51 ± 2.12), (93.57 ± 2.66) respectively in group C. BIS values measured at T 2 ( t = 24.49, 48.60, both P < 0.05), T 3 ( t = 28.34, 54.28, both P < 0.05), and T 4 ( t = 7.61, 15.91, both P < 0.05) in groups B and C were significantly lower than those in group A. BIS measured at T 2 ( t = 24.11, P < 0.05), T 3 ( t = 25.93, P < 0.05), and T 4 ( t = 8.30, P < 0.05) in group C were significantly lower than those in group B. Correlation analysis showed that 95% SEF measured at T 2 ( r = 0.65, P < 0.05), T 3 ( r = 0.68, P < 0.05) and T 4 ( r = 0.49, P < 0.05) were positively correlated with BIS measured at corresponding time points. There were no significant differences in duration of electrical stimulation [(61.25 ± 4.32) seconds, (45.19 ± 3.68) seconds, and (27.54 ± 2.54) seconds, F = 1 434.14, P < 0.05], post-onset inhibition index [(87.68 ± 5.82)%, (81.59 ± 5.35)%, (75.27 ± 4.87)%, F = 87.09, P < 0.05], and average seizure energy index [(5 668.38 ± 1 264.01) μV2, (4 555.61 ± 1 058.96) μV2, (3 642.25 ± 792.68) μV2, F = 59.97, P < 0.05] among the three groups. Duration of electrical stimulation ( t = 36.07, 75.71, both P < 0.05), post-onset inhibition index ( t = 9.15, 18.66, both P < 0.05), and average seizure energy index ( t = 8.49, 15.46, both P < 0.05) in groups B and C were significantly lower than those in group A. Duration of electrical stimulation, post-onset inhibition index and average seizure energy index in group C were significantly lower than those in group B ( t = 39.64, 9.50, 6.97, all P < 0.05). BIS was positively correlated with duration of electrical stimulation ( r = 0.68, P < 0.05), post-onset inhibition index ( r = 0.55, P < 0.05) and average seizure energy index ( r = 0.42, P < 0.05). There were no significant differences in the incidences of headache, myalgia, nausea and vomiting among the three groups ( P > 0.05). Conclusion:95% SEF was positively correlated with BIS in patients with schizophrenia. BIS measured at T 2 was positively correlated with effect of modified electroconvulsive therapy center.

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