1.Knock-down ATG5 gene inhibits autophagyand enhances celastrol-induced apoptosis in human lung cancer cell H1299
Basic & Clinical Medicine 2017;37(4):531-536
Objective To establish the lung cancer cell strain with low ATG5 expression and to detect the effect of celastrol on lung cancer cell apoptosis after downregulation of autophagy.Methods H1299 was infected by lentivirus-mediated ATG5 shRNA.RT-qPCR and Western blot assays were applied to confirm the effect of ATG5 knock down.Autophagy was measured by Western blot and RFP-LC3 transfection.Cell apoptosis of ATG5 normal expression group and of ATG5 low expression group of H1299 cells was detected by FACS.Finally, Western blot was used to detect the expression of apoptosis-related proteins Bcl-2, Bax and cleaved caspase-3.Results The expression of ATG mRNA and protein significantly decreased after ATG5 knockdown in H1299 cells (P<0.05).The autophagy marker of LC3-Ⅱ level was downregulated and P62 expression was upregulated after inhibition of ATG5, and the RFP-LC3 puncta reduced significantly after ATG5 knockdown (P<0.05).Compared with control group,the apoptosis rate in ATG5 downregulation group increased significantly after celastrol treatment (P<0.01).Pro-apoptotic proteins of Bax and cleaved caspase-3 levels were upregulated and anti-apoptotic protein of Bcl-2 level decreased after ATG5 inhibition (P<0.05).ConclusionsThe effect of celastrol-induced apoptosis of lung cancer cells was enhanced after downregulation of autophagy, demonstrating inhibition autophay may be a new target of lung cancer treatment.
2.Effect of advanced glycation end products on inflammation in cultured cardiomyocytes
Bo HU ; Xiaogang ZHANG ; Linlin ZENG
Chinese Journal of Pathophysiology 2000;0(12):-
AIM:To investigate the effect of advanced glycation end products on inflammation in cultured cardiomyocytes.METHODS: Primary cardiomyocytes were isolated from Sprague-Dawley neonatal (1 to 2 days old) rats ventricles. The insulin resistant cardiomyocyte model was established. Neonatal rat ventricular myocytes were exposed to AGEs for 24 hours. TNF-? mRNA and PPAR-? mRNA expressions were determined by RT-PCR. Activation of NF-?B in the cells was examined by using immunocytochemistry. The ultrastructure of the cells was detected by transmission electron microscope.RESULTS: The exprssion of TNF-? mRNA and the activation of NF-?B increased, the expression of PPAR-? mRNA decreased compared with control group (P
3.Surgical treatment timing for multi-drug resistance tuberculosis patients: a retrospective study
Pan ZHAO ; Mingying JIANG ; Yuzhong XIE ; Xiaogang ZENG
Chinese Journal of Thoracic and Cardiovascular Surgery 2014;30(3):141-144
Objective To investigate the optimal timing of surgical treatment for multi-drug resistance patients,discuss the clinical effect of surgery with chemotherapy treatment for muhi-drug resistant tuberculosis,and obtain more evidence for further optimizing surgical treatment strategy for such patients.Methods 100 cases who were multi-drug resistant and who received treatment in our hospital from July 2003 to June 2010 were included in this retrospective study.Among them,50 (observation group) received pulmonary lobectomy followed by anti-tuberculosis chemotherapy for 12 to 24 months,and the others (control group) only received anti-tuberculosis regimens although they had indications for pulmonary lobectomy.All patients in both groups were followed up for 12 to 24 months.Therapeutic effects and post-operational events were compared statistically in the observation group patients according to their duration of disease.Results Results At the end of follow-up,the cure rate,illness exacerbation rate and mortality were 36.0% (18/50),16.0% (8/50) and 26.0% (13/50) respectively in the control group,whereas those in the observation group were 80.0% (40/50),2.0% (1/50) and 4.0% (2/50) respectively.Resistanee to new anti-tuberculosis drugs appeared in 3 cases (6%) in the control group,while there was no new resistance in the observation group.The cure rate and complication rate were 96.30% and 3.70% respectively for patients whose duration of illness was less than 2 years,whereas those were 47.8% and 43.5% respectively for cases whose duration of illness was more than 2 years.Bronchopleural fistula,hemorrhage,pyothorax and pulmonary atelectasis were main postoperative complications,from which 11 cases recovered and 2 died,the death caused by choking of big haemoptysisand and multiple organs failure.Conclusion The therapeutic effects of surgical treatment plus anti-tuberculosis chemotherapy were better than chemotherapy alone.Pulmonary lobectomy could result in better response if done at the earlier stages of illness.Complications of operations were acceptable.
5.Expression and clinical significance of serum CCL22 and CCR4 in patients with chronic hepatitis B
ZOU Xiaoxu ; YE Huiming ; ZENG Xiaogang ; LI Hongbing
China Tropical Medicine 2023;23(11):1193-
Abstract: Objective To investigate the expression of serum C-C chemokine 22 (CCL22) and its receptor C-C chemokine receptor 4 (CCR4) in patients with chronic hepatitis B (CHB), and its correlation with liver function indicators and disease progression. Methods A total of 96 patients with CHB who were treated in Neijiang Traditional Chinese Medicine Hospital from October 2021 to November 2022 were recruited as the observation group, and divided into mild group (n=43), moderate group (n=36) and severe group (n=17) , according to the progress of the disease. In addition, 50 healthy people who underwent physical examination in the same hosiptal were selected as the control group. The levels of serum CCL22 mRNA, CCR4 mRNA and liver function indicators [alanine aminotrans-ferase (ALT), aspartate aminotransferase (AST), total bilirubin (TBIL) and albumin (ALB)] were measured. Pearson correlation analysis was performed to analyze the correlation between serum CCL22 and CCR4 levels and liver function indicators and disease severity, and logistic regression was applied to evaluate the factors affecting the progress of CHB patients. Results Compared with the control group, the levels of CCL22 mRNA, CCR4 mRNA, ALT, AST and TBIL in the observation group were obviously higher (P<0.05), the level of ALB was obviously lower (P<0.05); the expression levels of serum CCL22 mRNA, CCR4 mRNA, ALT, AST and TBIL in mild, moderate and severe groups increased in turn, while the expression level of ALB decreased in turn, with significant differences between groups (P<0.05); The levels of serum CCL22 mRNA and CCR4 mRNA were positively correlated with liver function indicators ALT, AST, TBIL levels, and negatively correlated with ALB level (P<0.05); Both CCL22 mRNA and CCR4 mRNA were positively correlated with the severity of the disease (r=0.646, 0.516, P<0.001); the expression levels of CCR4 mRNA, ALT, AST, TBIL and ALB were all factors affecting the development of CHB patients (P<0.05). Conclusions The expression of CCL22 and CCR4 in serum is closely related to liver function index and severity of CHB patients, which can provide reference for clinical evaluation and symptomatic treatment.
6.The current state and hotspots of post-cardiac arrest brain injury: a visualization analysis based on CiteSpace
Xiaoye MO ; Wei HE ; Liyuan ZENG ; Xiangmin LI ; Xiaogang LI ; Liping ZHOU ; Zheng LI
Chinese Journal of Emergency Medicine 2024;33(7):1026-1031
Objective:This study examined the development trend and research hotspot of cardiopulmonary brain resuscitation in the last ten years by a visual analysis of the literature on post-cardiac arrest brain injury.Methods:English articles were acquired from the Web of Sciences (WOS) core database. CiteSpace 5.8.R3 software was used to analyze annual publications, countries, institutions, authors. We identified the trending research areas by analyzing collaborative networks, keywords co-occurrence, burst detection analysis, timeline and time-zone diagrams.Results:The search included 10 867 articles in the WOS core database from Jan 1, 2013 to Oct 25, 2023. In the last ten years, the top 3 nations were the United States, China, and Japan, with the United States having the most citation of 3691 and an centrality of 0.47. The author with the highest number of publications was Hans Friberg from Sweden. The top 5 most frequent keywords in WOS were cardiac arrest, cardiopulmonary resuscitation, resuscitation, survival, outcome. Keyword cluster analysis showed 4 clusters, including: #0 of-hospital cardiac arrest, #1 traumatic brain injury, #2 targeted temperature management, #3 global cerebral ischemia. Keyword burst showed that the top 5 ranked by strength are mild hypothermia, emergency cardiovascular care, neuron specific enolase, cerebral ischemia, epinephrine, and the top 5 ranked by the year of burst begins are out-of-hospital cardiac arrest, cpr, epinephrine, coma, and task force. The timeline and time zone charts indicated that, starting in 2017, the main fields of study concentration were traumatic brain injury and out-of-hospital cardiac arrest. Additionally, extracorporeal membrane, intensive care, risk factors, and electroencephalography were identified as new high-frequency keywords.Conclusions:Over the past ten years, the research hotspots on post-cardiac arrest brain injury include out-of-hospital cardiac arrest, traumatic brain injury, and target temperature control. The research development trends will be extracorporeal membrane oxygenation, critical care, and EEG.
7.Research progress on sepsis-induced immunosuppression
Liyuan ZENG ; Xiaoye MO ; Xiaogang LI ; Aimin WANG
Chinese Journal of Integrated Traditional and Western Medicine in Intensive and Critical Care 2024;31(3):375-379
Sepsis,characterized by inadequate host responses to infection,leads to life-threatening organ dysfunction and is a major cause of mortality among critically ill patients.Among them,immunosuppression plays a crucial role in the development of sepsis.This review elaborates on the pathogenesis and immunological features of sepsis-induced immunosuppression.Then,we analyzed the current situation of immunotherapy for sepsis from the angles of restoring immune stimulation,eliminating inflammatory mediators,and improving immunity.We emphasized the need for a comprehensive analysis of the traits and immunological types of patients with sepsis,generating new approaches to improve the prognosis of sepsis based on immune targets.
8.Treatment of upper urinary calculi with MPCNL : experience of 10,452 cases of 19 years in a single-center
Guohua ZENG ; Zanlin MAI ; Jian YUAN ; Xun LI ; Chichang SHAN ; Kaijun WU ; Guanzhao LIU ; Wenzhong CHENG ; Bin GUO ; Xiangdong YE ; Defeng QI ; Luping WANG ; Wenqi WU ; Yongda LIU ; Xiaogang LU ; Jintai LUO ; Zhaohui HE ; Ming LEI ; Dongliang ZHONG ; Wen ZHONG
Chinese Journal of Urology 2012;33(10):767-770
Objective To analyze the clinical indications,efficacy and safety of Chinese minimally invasive percutaneous nephrolithotomy (MPCNL) in treating upper urinary calculi based on our experience.Methods From June 1992 to September 2010,a total of 10,452 patients (6060 males and 4392 females)with a mean age of (47.6 ± 13.7) years (7 months-93 years) received MPCNL in our center.The mean stone burden was (777.4 ± 740.3) mm2 (20 - 4 080 mm2 ).The data of stone burden,operative techniques,operating time,stone-free rate,major complication,hospital stay and stone composition were investigated. Results Of the 10 452 cases,11 801 procedures were performed on 10 876 (5493 left and 5383right) renal units,including 10 102 first stage procedures,1604 secondary procedures,86 third procedures and 9 fourth procedures.There were 11 830 tracts established,including 373 (3.15% ) tracts of 14 F,7867 (66.50%) tracts of 16 F and 3590 (30.35%) tracts of 18 F.There were 1207 (10.20%),9174(77.55%) and 1449 (12.25%) punctures located in upper,middle and lower pole,respectively.956(8.79%) renal units were managed with multiple tracts,which including 2 tracts in 846 (7.78%) units,3tracts in 85 (0.78%) units,4 tracts in 18 (0.17%) units and 5 tracts in 7 (0.06%) units.Pneumatic lithotripsy was used in 8563 (72.56%) procedures,Holmium:YAG laser lithotripsy was used in 2981(25.26%) procedures and Pneumatic lithotripsy + Holmium: YAG laser lithotripsy was used in 257(2.18%) procedures.762 (7.29%) cases needed ESWL to clean the stone after MPCNL.The average operating time was ( 101.3 ± 44.2) min ( 10 -240 min).The stone-free rate of MPCNL was 89.9%,which increased to 93% by adjunctive ESWL.And the mean hospital stay was ( 13.2 ± 6.4) days (2 - 72 days).The major complications happened on 321 (3.07%) cases,including 294 (2.81% ) cases of blood transfusion,12 (0.11% ) cases of sepsis,2 (0.02%) cases of renal abscess,9 (0.09%) cases of pleura injury,2 (0.02%) cases of colon injury and 2 (0.02%) cases of death.53 (0.51%) cases needed selective renal arterial embolization to achieve hemostasis.The main stone compositions were analyzed in 4345 cases.Calcium oxalate,calcium phosphate,magnesium ammonium phosphate,uric acid,ammonium urate,carbapatite and cystin were 91.74%,90.33%,14.91%,17.77%,4.83%,8.47% and 0.51%,respectively. Conclusions MPCNL is an effective and safe treatment option for all kinds of upper urinary calculi in patients at all ages with a high stone free rate and low major complication rate.
9.Clinical analysis of 147 cases of pediatric kidney transplantation with kidney donation after death of minors
Rui CHEN ; Wenyu ZHAO ; Xiaogang GAO ; Mingxing SUI ; Hanlan LU ; Lei ZHANG ; Youhua ZHU ; Li ZENG
Chinese Journal of Organ Transplantation 2020;41(1):15-19
Objective:To explore the feasibility and efficacy of kidney transplantation with pediatric donors to pediatric recipients (PTP) according to the quality control parameters of kidney transplantation in China.Methods:From September 2011 to September 2019, the clinical data were reviewed for 147 children undergoing kidney transplantation. The general status of donors and recipients, survival rate and complications of transplantation were analyzed.The median age was 130(21-270) month and the median weight 26.0(8.5-71.5) kg. The median age of 120 donors was 12 month (4 day-180 month) and the median weight 9.3(2.5-50.0) kg.Results:After a follow-up period of 10 days to 9 years, the cumulative survival rates of patients and grafts were 97.3% and 88.8%. The cumulative survival rates of patients and grafts were 95.7% and 60.9% in en bloc kidney transplant recipients versus 96.8% and 94.2% in single kidney transplant recipients. The major complications of en bloc kidney transplantation were graft thrombosis (47.8%) and ureteral complications (17.4%). Single kidney transplantation was characterized by delayed graft function recovery (DGF, 18.6%) and acute rejection reaction (10.5%). Two cases died from donor-derived infection after transplantation, one from cytomegalovirus infection and one from epileptic seizure.Conclusions:PTP kidney transplantation is effective. Organ matching and optimal operative mode selection are essential. Preventing postoperative thrombosis for avoiding an early graft loss has remained a high priority during PTP kidney transplantation.
10.Clinical significance of joint application of carcinoembryionic and carbohydrate antigen 19-9 for improving the prognostic prediction in patients with gallbladder cancer
Zhijian WEN ; Baohua ZHANG ; Junli HUANG ; Xiaogang XIA ; Jianjun ZENG ; Zhibin WANG ; Wengang LI
International Journal of Surgery 2017;44(10):661-667,封3
Objective To investigate the clinical significance of joint application of carcinoembryionic and carbohydrate antigen 19-9 for improving the prognosis of patients with gallbladder cancer.Methods A retrospective analysis of clinical-pathological features and prognosis were conducted including 390 patients with gallbladder cancer,who were treated from January 2003 to December 2013 at Eastern Hepatobiliary Surgery Hospital of Second Military Medical University.The clinical value of joint application of careinoembryionic and carbohydrate antigen 19-9 in prognosis was explored.The survival of patients was followed up by telephone or outpatient.Continuous variables were indicated as median (average) and categorical variables were expressed as number(n).Mann-Whitney U test was applied for continuous variables.Categorical variables were compared by the Chi-square test or Fisher probability method.The survival curve was drawn by the Kaplan-Meier method.The univariate analysis and multivariate analysis of prognosis were respectively done using the Log-rank test and COX regression model.Results Of the 390 patients,327 had complete data.The median (range) follow-up time was 49 (1-123) months.Both carcinoembryionic and carbohydrate antigen 19-9 could be used to predict prognosis of gallbladder cancer.A linear combination of carcinoembryionic and carbohydrate antigen 19-9 was significantly better(0.9365) than carbohydrate antigen 19-9 (0.7619) as well as carcinoembryionic (0.7937) alone in term of specificity.Preoperative blood test carcinoembryionic and carbohydrate antigen 19-9 nature showed double-negative group had the best prognosis,with a median survival of 27.06 months,R0 radical rate was 86.1%.Doublepositive group had the worst prognosis,with a median survival of 6.17 months,R0 radical rate was 45.1%.Conclusions Combinations of pretherapeutic tumor makers carcinoembryionic and carbohydrate antigen 19-9 can improve the accuracy of predicting prognostic in patients with gallbladder cancer,and the clinical application is practical.