1.Clinical investigation of minimally invasive double anchoring combined with percutaneous vertebral augmentation in the treatment of Kümmell disease
Qing FENG ; Jun MIAO ; Shenglin CAO ; Zepei ZHANG ; Yingbo LIU ; Wang REN ; Hongwei FENG ; Bin DONG ; Chao LI ; Ning JI ; Bingyao ZHANG ; Lijun AN
Chinese Journal of Orthopaedics 2025;45(7):412-419
Objective:To investigate the clinical efficacy of minimally invasive double anchoring combined with percutaneous kyphoplasty (PKP) for Kümmell disease.Methods:The clinical data of 24 patients with Kümmell disease who were treated with minimally invasive double anchoring combined with PKP in Cangzhou People's Hospital from October 2022 to March 2024 were retrospectively analyzed. Among them, there were 2 T 10 vertebrae, 5 T 11 vertebrae, 7 T 12 vertebrae, 6 L 1 vertebrae, and 4 L 2 vertebrae. There were 6 males and 18 females. The average age was 72.05±4.52 years (range, 66-80 years). The bone mineral density T value was -3.41±0.77 (range, -2.5-4.5). The stages of Li's Kümmell disease included 13 cases of stage II and 11 cases of stage III. The operation time, intraoperative blood loss, and volume of bone cement injected were recorded. The vertebral index, vertebral angle and Cobb angle of diseased segment were measured before and after operation. The visual analogue scale (VAS) was used to assess the degree of pain, the Oswestry disability index (ODI) and the Japanese Orthopaedic Association (JOA) low back pain scale were used to assess spinal function. The Medical Outcome Study short form 36 item health survey (SF-36) was used to assess the general health status of the patients. The postoperative symptom recovery was evaluated by Odom criteria. Results:The mean operative time of the 24 patients was 35.32±6.86 min, the injected volume of bone cement was 4.39±1.72 ml, and the intraoperative blood loss was 16.56±5.21 ml. All patients were followed up for 10 to 14 months, with an average of 11.7 months. Postoperative CT examination showed that the screw positions were satisfactory, and no loosening or displacement of bone cement mass occurred. On the first day after surgery, the vertebral body index, vertebral body angle and Cobb angle of diseased segment were 77.71%±2.75%, 12.40°±1.53° and 25.77°±4.49°, respectively, which represented significant improvements from the preoperative values of 43.09%±5.66%, 22.12°±2.92° and 46.98°±5.68° before surgery ( P<0.05). At the last follow-up, the values were 76.18%±2.32%, 12.41°±2.53°, 26.14°±4.87°, respectively, which were significantly improved compared with those before surgery ( P<0.05), but there was no statistical significance compared with the first day after surgery ( P>0.05). The VAS, ODI and JOA scores on the first day after surgery were 2.11±0.87 points, 22.46±5.49 points and 27.68±2.45 points, respectively, which were significantly improved compared with those before surgery 7.50±0.98 points, 76.25±8.56 points and 14.96±4.91 points ( P<0.05). At the last follow-up, the values were 2.26±0.88, 23.87±3.25 and 26.58±2.77, respectively, which were significantly improved compared with those before surgery ( P<0.05), and there was no statistical significance compared with the first day after surgery ( P>0.05). All 24 patients completed SF-36 scale assessment, and the results showed that there were statistically significant differences in physiological function, physiological role, physical pain, general health status, social function scores and mental health between the patients before surgery and the last follow-up ( P<0.05), while there were no statistically significant differences in vitality and emotional function ( P>0.05). At the last follow-up, the Odom criteria showed excellent results in 18 cases, good in 4 cases, and fair in 2 cases. Conclusions:The application of minimally invasive double anchoring (single nail fixation) combined with PKP in the treatment of Kümmell disease can effectively prevent the loosening and displacement of bone cement masses, and the fixation effect is satisfactory, which can restore the height of the injured vertebrum, reduce kyphosis and improve spinal function. The clinical symptoms of the patients were significantly improved, and the quality of life was enhanced.
2.Clinical investigation of minimally invasive double anchoring combined with percutaneous vertebral augmentation in the treatment of Kümmell disease
Qing FENG ; Jun MIAO ; Shenglin CAO ; Zepei ZHANG ; Yingbo LIU ; Wang REN ; Hongwei FENG ; Bin DONG ; Chao LI ; Ning JI ; Bingyao ZHANG ; Lijun AN
Chinese Journal of Orthopaedics 2025;45(7):412-419
Objective:To investigate the clinical efficacy of minimally invasive double anchoring combined with percutaneous kyphoplasty (PKP) for Kümmell disease.Methods:The clinical data of 24 patients with Kümmell disease who were treated with minimally invasive double anchoring combined with PKP in Cangzhou People's Hospital from October 2022 to March 2024 were retrospectively analyzed. Among them, there were 2 T 10 vertebrae, 5 T 11 vertebrae, 7 T 12 vertebrae, 6 L 1 vertebrae, and 4 L 2 vertebrae. There were 6 males and 18 females. The average age was 72.05±4.52 years (range, 66-80 years). The bone mineral density T value was -3.41±0.77 (range, -2.5-4.5). The stages of Li's Kümmell disease included 13 cases of stage II and 11 cases of stage III. The operation time, intraoperative blood loss, and volume of bone cement injected were recorded. The vertebral index, vertebral angle and Cobb angle of diseased segment were measured before and after operation. The visual analogue scale (VAS) was used to assess the degree of pain, the Oswestry disability index (ODI) and the Japanese Orthopaedic Association (JOA) low back pain scale were used to assess spinal function. The Medical Outcome Study short form 36 item health survey (SF-36) was used to assess the general health status of the patients. The postoperative symptom recovery was evaluated by Odom criteria. Results:The mean operative time of the 24 patients was 35.32±6.86 min, the injected volume of bone cement was 4.39±1.72 ml, and the intraoperative blood loss was 16.56±5.21 ml. All patients were followed up for 10 to 14 months, with an average of 11.7 months. Postoperative CT examination showed that the screw positions were satisfactory, and no loosening or displacement of bone cement mass occurred. On the first day after surgery, the vertebral body index, vertebral body angle and Cobb angle of diseased segment were 77.71%±2.75%, 12.40°±1.53° and 25.77°±4.49°, respectively, which represented significant improvements from the preoperative values of 43.09%±5.66%, 22.12°±2.92° and 46.98°±5.68° before surgery ( P<0.05). At the last follow-up, the values were 76.18%±2.32%, 12.41°±2.53°, 26.14°±4.87°, respectively, which were significantly improved compared with those before surgery ( P<0.05), but there was no statistical significance compared with the first day after surgery ( P>0.05). The VAS, ODI and JOA scores on the first day after surgery were 2.11±0.87 points, 22.46±5.49 points and 27.68±2.45 points, respectively, which were significantly improved compared with those before surgery 7.50±0.98 points, 76.25±8.56 points and 14.96±4.91 points ( P<0.05). At the last follow-up, the values were 2.26±0.88, 23.87±3.25 and 26.58±2.77, respectively, which were significantly improved compared with those before surgery ( P<0.05), and there was no statistical significance compared with the first day after surgery ( P>0.05). All 24 patients completed SF-36 scale assessment, and the results showed that there were statistically significant differences in physiological function, physiological role, physical pain, general health status, social function scores and mental health between the patients before surgery and the last follow-up ( P<0.05), while there were no statistically significant differences in vitality and emotional function ( P>0.05). At the last follow-up, the Odom criteria showed excellent results in 18 cases, good in 4 cases, and fair in 2 cases. Conclusions:The application of minimally invasive double anchoring (single nail fixation) combined with PKP in the treatment of Kümmell disease can effectively prevent the loosening and displacement of bone cement masses, and the fixation effect is satisfactory, which can restore the height of the injured vertebrum, reduce kyphosis and improve spinal function. The clinical symptoms of the patients were significantly improved, and the quality of life was enhanced.
3.Establishment and evaluation of a textbook outcome prediction model of laparoscopic radical surgery for patients with pancreatic body and tail tumor
Senmao MU ; Bingyao LI ; Changqian TANG ; Yongnian REN ; Xingbo WEI ; Yuqi GUO ; Shipeng LI ; Yafeng WANG ; Liancai WANG ; Deyu LI
Chinese Journal of Hepatobiliary Surgery 2024;30(7):509-515
Objective:To analyze the influencing factors of not achieving textbook outcome (TO) after laparoscopic radical surgery in patients with malignant pancreatic body and tail tumor, and to establish and evaluate a nomogram for predicting the failure to achieve TO.Methods:The clinical data of 111 patients with malignant pancreatic body and tail tumors undergoing laparoscopic radical surgery in the Department of Hepatobiliary and Pancreatic Surgery in Henan Provincial People's Hospital from January 2020 to December 2022 were retrospectively analyzed, including 44 males and 67 females, aged (53.8±14.7) years. All patients were staged TNM I to II, including pancreatic ductal adenocarcinoma ( n=102, 91.9%), pancreatic neuroendocrine tumor ( n=5, 4.5%), and pancreatic intraductal papillary mucinous tumors ( n=4, 3.6%). The patients were randomly divided into a training set ( n=78) and a test set ( n=33) at a ratio of 7∶3. The 78 patients in the training set were further divided into TO group ( n=28) and control group ( n=50, not achieving TO). Based on the univariate and multivariate logistic regression analysis of training set, the influencing factors of failure to achieve TO after laparoscopic radical surgery in patients with pancreatic body and tail tumor were analyzed. A nomogram based on the multi-factors were established to predict the failure to achieve TO. Receiver operating characteristic (ROC) curve, calibration curve, decision curve analysis (DCA) were utilized to evaluate the nomogram. Results:There were significant differences in tumor diameter, positive lymph nodes, operation time and CT value of pancreas between the TO and control groups (all P<0.05). Multivariate logistic regression analysis showed that tumor diameter >4 cm ( OR=9.673, 95% CI: 2.198-42.579), positive lymph node ( OR=5.385, 95% CI: 1.514-19.154), pancreatic CT value ( OR=0.594, 95% CI: 0.392-0.902) were the influencing factors for patients who did not achieve TO (all P<0.05). Based on the results of multiple factors, a nomogram was established to predict the failure to achieve TO after laparoscopic radical surgery. The area under the ROC curve of the nomogram was 0.849 (95% CI: 0.757-0.940) and 0.873 (95% CI: 0.730-1.000) in the training and test sets, respectively. The calibration curve was close to the ideal curve and the predicted results of the nomogram matched well with the actual results. The DCA showed that the nomogram has obvious positive net benefit. Conclusion:The nomogram constructed with tumor diameter > 4 cm, positive lymph nodes and CT value of pancreas for prediction of the patients with pancreatic body and tail malignant tumor after laparoscopic radical surgery did not achieve TO has good performance.
4.A machine learning model to predict the risk of liver dysfunction after hepatectomy in patients with hilar cholangiocarcinoma
Changqian TANG ; Bingyao LI ; Yongnian REN ; Hengli ZHU ; Yuqi GUO ; Dongxiao LI ; Yafeng WANG ; Shipeng LI ; Deyu LI ; Liancai WANG
Chinese Journal of Hepatobiliary Surgery 2024;30(12):897-902
Objective:To establish a machine learning model to predict the risk of post hepatectomy liver dysfunction (PHLD) in patients with hilar cholangiocarcinoma (HCCA).Methods:Clinical data of 203 patients with HCCA undergoing open radical hemihepatectomy in Henan University People's Hospital from January 2017 to December 2023 were retrospectively analyzed, including 112 males and 91 females, aged 63 (55, 69) years. According to the diagnostic criteria for PHLD, patients were divided into two groups: PHLD group ( n=45) and non-PHLD group ( n=158). Clinical data such as age, sex, neutrophil count (NEU), systemic immunoinflammatory index (SII), nutritional prognosis index (PNI), neutrophil to lymphocyte ratio (NLR), operative time and complications were compared between the two groups. The variables with statistically significant difference between the two groups were included in seven machine learning models, namely logistic regression, random forest, extreme gradient boosting, light gradient boosting, decision tree, gaussian naive bayes and support vector machine. The area under receiver operating characteristic curve optimization model was adopted, and Shapliga sum-interpretation method (SHAP) was used to analyze and interpret the final optimal model. Results:There were statistically significant differences in age, preoperative data including management of jaundice, albumin, total bilirubin, aspartate aminotransferase, NEU, SII, PNI, and NLR, operative time, postoperative complication of Dindo-Clavien≥Grade Ⅲ, and the ratio of FLR/TLV between in the two groups (all P<0.05). Finally, it was determined that the prediction performance of the extreme gradient boosting model was the best, with an area under curve of 0.888 (95% CI: 0.776-0.985), an accuracy of 0.854, a sensitivity of 0.506, a specificity of 0.965, an F1 value of 0.625, and a Kappa value of 0.519. SHAP analysis of the extreme gradient boosting model showed that total bilirubin on admission, operation time, postoperative complication of Dindo-Clavien≥grade Ⅲ, SII and NEU were five important factors of this model, which were positively correlated with the occurrence of PHLD in HCCA patients. Conclusion:The extreme gradient boosting model established in this study has a good predictive performance and stability for PHLD in HCCA patients.
5.A machine learning model to predict the risk of liver dysfunction after hepatectomy in patients with hilar cholangiocarcinoma
Changqian TANG ; Bingyao LI ; Yongnian REN ; Hengli ZHU ; Yuqi GUO ; Dongxiao LI ; Yafeng WANG ; Shipeng LI ; Deyu LI ; Liancai WANG
Chinese Journal of Hepatobiliary Surgery 2024;30(12):897-902
Objective:To establish a machine learning model to predict the risk of post hepatectomy liver dysfunction (PHLD) in patients with hilar cholangiocarcinoma (HCCA).Methods:Clinical data of 203 patients with HCCA undergoing open radical hemihepatectomy in Henan University People's Hospital from January 2017 to December 2023 were retrospectively analyzed, including 112 males and 91 females, aged 63 (55, 69) years. According to the diagnostic criteria for PHLD, patients were divided into two groups: PHLD group ( n=45) and non-PHLD group ( n=158). Clinical data such as age, sex, neutrophil count (NEU), systemic immunoinflammatory index (SII), nutritional prognosis index (PNI), neutrophil to lymphocyte ratio (NLR), operative time and complications were compared between the two groups. The variables with statistically significant difference between the two groups were included in seven machine learning models, namely logistic regression, random forest, extreme gradient boosting, light gradient boosting, decision tree, gaussian naive bayes and support vector machine. The area under receiver operating characteristic curve optimization model was adopted, and Shapliga sum-interpretation method (SHAP) was used to analyze and interpret the final optimal model. Results:There were statistically significant differences in age, preoperative data including management of jaundice, albumin, total bilirubin, aspartate aminotransferase, NEU, SII, PNI, and NLR, operative time, postoperative complication of Dindo-Clavien≥Grade Ⅲ, and the ratio of FLR/TLV between in the two groups (all P<0.05). Finally, it was determined that the prediction performance of the extreme gradient boosting model was the best, with an area under curve of 0.888 (95% CI: 0.776-0.985), an accuracy of 0.854, a sensitivity of 0.506, a specificity of 0.965, an F1 value of 0.625, and a Kappa value of 0.519. SHAP analysis of the extreme gradient boosting model showed that total bilirubin on admission, operation time, postoperative complication of Dindo-Clavien≥grade Ⅲ, SII and NEU were five important factors of this model, which were positively correlated with the occurrence of PHLD in HCCA patients. Conclusion:The extreme gradient boosting model established in this study has a good predictive performance and stability for PHLD in HCCA patients.
6.The role of the fat mass and obesity-associated protein in ischemia-reperfusion injury of human renal tubular epithelial cells
Bingyao XIONG ; Zhijuan KANG ; Zhihui LI
Chinese Journal of Applied Clinical Pediatrics 2022;37(8):626-630
Objective:To explore the role of the fat mass and obesity-associated protein (FTO) in human renal tubular epithelial cells (HK-2) suffering ischemia-reperfusion injury (IRI).Methods:The in vitro IRI mo-del was established in HK-2 cells by induction with antimycin A, A23187 and 2-deoxy-D-glucose.The cells were divided into control group and ischemia-reperfusion group (I/R group). The mRNA and protein expressions of FTO, B-cell lymphoma / leukemia 2(Bcl-2)-associated X(Bax), Bcl-2 and cleaved cysteinyl aspartate specific proteinase(cleaved Caspase-3) in HK-2 cells before and after IRI were detected by real-time fluorescent quantitative PCR(qPCR) and Western blot, respectively.Cell apoptosis was measured using flow cytometry.The level ofe N 6-methy-ladenosine (m 6A) RNA was detected by colorimetry. Results:(1) The mRNA expressions of FTO (0.15±0.05 vs.1.00±0.23) and Bcl-2 (0.14±0.07 vs.1.02±0.25) in I/R group were significantly lower than those in control group; While those of Bax (3.10±0.35 vs.1.00±0.13) and cleaved Caspase-3 (4.21±0.56 vs.1.00±0.09) were significantly higher ( t=6.28, 5.84, -9.83, and -9.84, respectively, all P<0.01). (2) The protein expressions of FTO (0.69±0.14 vs.1.37±0.02) and Bcl-2 (0.50±0.12 vs.1.25±0.21) were significantly lower in I/R group than those of control group; While those of Bax (1.04±0.08 vs.0.57±0.06) and cleaved Caspase-3 (0.99±0.05 vs.0.36±0.07) were significantly higher ( t=8.10, 5.49, -8.22, and -12.09, respectively, all P<0.05). (3) Compared with the control group, the apoptosis rate of HK-2 cells in I/R group was significantly higher [(61.70±1.01)% vs.(0.16±0.10)%, t=63.80, P<0.01]. (4) Compared with the control group, the percentage of m 6A modification level in total RNA in I/R group was significantly higher [(3.13±0.21)% vs.(1.10±0.26)%, t=-10.61, P<0.01]. Conclusions:FTO-mediated RNA m 6A modification may affect renal IRI by regulating the apoptosis of HK-2 cells.
7.Overview of the Systematic Review of Drug Treatment for Tic Disorders in Children
Jianhua ZHANG ; Bingyao KANG ; Dan LI ; Dan LUO ; Chunsong YANG ; Jing CHEN
China Pharmacy 2021;32(21):2647-2654
OBJECTIVE:To overview and analyze the current evidence of systematic reviews of drug treatment for children with tic disorder (TD),and to provide evidence-based reference for clinical practice. METHODS :Retrieved from Medline ,Embase, CBM,CNKI,VIP and Wanfang database ,and so on ,systematic reviews about the efficacy and safety of drug treatment for TD were collected. AMSTAR- 2 tools were used to evaluate the quality of included studies ;the intervention measures ,diagnosis standard,outcome index ,the types of included studies ,main conclusion ,control measures ,effect sizes of different drug treatment were also extracted and analyzed descriptively. RESULTS :A total of 27 systematic reviews were included ,of which 5 were medium-quality,8 low-quality and 14 very-low-quality. Meta-analysis showed that although typical psychiatric drugs could control tic symptoms ,ADR were prominent and the safety was not good ;risperidone and aripiprazole as atypical psychiatric drugs had good efficacy and safety ,and the research evidence was relatively sufficient. Clonidine as α2 adrenergic agonist could effectively control tic symptoms with fewer ADR ,especially for patients with affention deficit and hyperactivity disorder (ADHD),and research evidence was sufficient. Tiapride could effectively improve tic symptoms ,and the overall tolerance was better. Tomoxetine and methylphenidate could significantly improve the tic symptoms of tic patients with ADHD. CONCLUSIONS :In the clinical treatment of TD in children ,ADR induced by typical antipsychotics are prominent and the safety is not good ;risperidone, aripiprazole,clonidine and tiapride have good efficacy and safety. Clonidine ,tomoxetine and methylphenidate could significantly improve tic symptoms of TD patients with ADHD. But the quality of systematic review methodology for tomoxetine and methylp- henidate is not good and further improvement is needed.
8.Mass spectrometry-based identification of new serum biomarkers in patients with multidrug resistant pulmonary tuberculosis.
Dongzi LIN ; Wei WANG ; Feng QIU ; Yumei LI ; Xiaolin YU ; Bingyao LIN ; Yinwen CHEN ; Chunyan LEI ; Yan MA ; Jincheng ZENG ; Jie ZHOU
Journal of Southern Medical University 2019;39(12):1409-1420
OBJECTIVE:
To screen new serum metabolic biomarkers for different drug resistance profiles of pulmonary tuberculosis (TB) and explore their mechanisms and functions.
METHODS:
We collected serum samples from TB patients with drug sensitivity (DS), monoresistance to isoniazid (MR-INH), monoresistance to rifampin (MR-RFP), multidrug resistance (MDR), and polyresistance (PR). The metabolites in the serum samples were extracted by oscillatory and deproteinization for LC-MS/MS analysis, and the results were normalized by Pareto-scaling method and analyzed using Metaboanalyst 4.0 software to identify the differential metabolites. The differential metabolites were characterized by function enrichment and co-expression analysis to explore their function and possible pathological mechanisms.
RESULTS:
Compared with the DS group, 286 abnormally expressed metabolites were identified in MR-INH group, 362 in MR-RPF group, 277 in MDR group and 1208 in PR group by LC-MS/MS analysis. Acetylagmatine ( < 0.05), aminopentol ( < 0.05), and tetracosanyl oleate ( < 0.05) in MR-INH group; Ala His Pro Thr ( < 0.001) and glycinoprenol-9 ( < 0.05) in MR-RFP group; trimethylamine ( < 0.05), penaresidin A ( < 0.05), and verazine ( < 0.05) in MDR group; and PIP (18:1(11Z)/ 18:3(6Z, 9Z, 12Z)) ( < 0.001), Pro Arg Trp Tyr ( < 0.001), N-methyldioctylamine ( < 0.001), and phytolaccoside E ( < 0.05) in PR group all showed significant differential expressions. Significant differential expressions of phthalic acid mono-2-ethylhexyl ester ( < 0.05) and eicosanoyl-EA ( < 0.05) were found in all the drug resistant groups as compared with DS group.
CONCLUSIONS
Acetylagmatine, aminopentol, tetracosanyl oleate, Ala His Pro Thr, glycinoprenol-9, trimethylamine, penaresidin A, verazine, PIP(18:1(11Z)/18:3(6Z, 9Z, 12Z)), Pro Arg Trp Tyr, N-methyldioctylamine, phytolaccoside E, phthalic acid mono-2-ethylhexyl ester, and eicosanoyl-EA are potentially new biomarkers that indicate monoresistance, multi-drug resistance and polyresistance of Mycobacterium tuberculosis. The combined use of these biomarkers potentially allows for assessment of drug resistance in TB and enhances the diagnostic sensitivity and specificity.
Biomarkers
;
Chromatography, Liquid
;
Humans
;
Tandem Mass Spectrometry
;
Tuberculosis, Multidrug-Resistant
;
Tuberculosis, Pulmonary
9.Analysis on the implementation effect and influencing factors for family doctor contracted service in Shenzhen
Jiazhen ZHENG ; Bingyao MENG ; Youqin SI ; Kaihang LIU ; Yongge PENG ; Hua LI
Chinese Journal of Hospital Administration 2019;35(6):447-451
Objective To evaluate the effect of family doctor contracted service system in Shenzhen and explore the influencing factors for families to contract their family doctors. Methods A total of 480 residents were selected from 12 first-class community medical rehabilitation centers in Luohu, Futian and Nanshan districts of Shenzhen. The contents of the survey included the contracting status between the contracted and non-contracted residents, the utilization of four basic public health services, and the difference of satisfaction with community medical rehabilitation centers.Meanwhile, logistic regression was used to explore the important influencing factors of the contracted family doctors. Results The overall contracting rate of residents was 51.9% (248/478), and the lowest contracting rate was 23.1% (27/117) (P<0.05), found among patients under 40 years old.The utilization rate of contracted residents for growth and development examination, maternal health care as well as guidance of chronic disease prevention and treatment was higher than that of non-contracted residents ( P <0.05 ). fees and medical environment, service attitude,medical fees was higher than that of non-contracted residents(P<0.05).The satisfaction for convenience in medical environment, service attitude,medical fees and access to medical service was higher than that of non-contracted residents(P<0.05).The results of binary logistic regression analysis showed that age, education level, occupation ( retirement ) and chronic diseases were important factors affecting the signing of contracts.Conclusions The family doctors tend to be embraced by residents better than before. Family doctors contracted service system is conducive to improving the utilization rate of basic health services, acceptance rate of health services and satisfaction of residents. At the same time, the young population at large requires greater efforts before they can embrace the family doctor system.
10.Mechanism of heart injury in brain death rabbits
Ling LI ; Huijia ZHAO ; Wanhui WEI ; Qian XU ; Yuying SHI ; Shuying CHEN ; Bingyao CHEN ; Yanfeng WANG ; Qifa YE
Chinese Journal of Organ Transplantation 2018;39(8):487-492
Objective To study the mechanism of brain death-induced heart damage by observing the change patterns of morphological damage to the heart and related inflammatory factors after brain death and provide the experimental basis for heart transplantation by brain-dead donor.Methods The 30 rabbits were equally divided into two groups by the random digital table method:sham-operation group and brain death group.The rabbit brain death model was established in the brain death group,and the sham-operation group was given slow intracranial pressure.The rest treatments in the two groups were the same.At 2nd,6th and 8th h after operation,blood pressure,heart rate and respiratory rate were recorded.The damage of heart tissues was observed by HE staining.The plasma concentrations of IL-1,IL-6 and IL-8 were tested by ELISA.The expression of some inflammatory factors in heart issues was detected by RT-PCR and immunohistochemistry.Results At 8 h after brain death,there was no signifiant difference in blood pressure and heart rate between two groups (P>0.05).The damage of heart issues in the brain death group was more serious than in the shamoperation group.With the prolongation of brain death,the plasma concentrations of IL-6 and IL-8 increased significantly in the brain death group (P<0.05),but the concentration of IL-1β showed no siginificant difference between the two groups at 2 h after brain death (P<0.05).Besides,the expression of HSP27 and HSP70 mRNA as well as the protein expression of ICAM and NF-κB was significantly increased in the brain death group as compared with that in the sham-operation group (P<0.05).Conclusion With the prolongation of brain death time,the inflammatory factors in the heart tissues and plasma interleukin were increased,suggesting the inflammatory reaction occurs in donor heart under the condition of brain death,which influences the quality of donor in the heart transplantation.

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