1.Laparoscopic procurement model for left lobe living donor liver transplantation
Xuan ZHANG ; Hongguang WANG ; Jiahong DONG
Chinese Journal of Organ Transplantation 2010;31(9):562-564
Objective To assess the feasibility of laparoscopic hepatic lobe procurement for living donor liver transplantation. Methods The technique included pneumoperitoneum with CO2,ports placement, porta hepatis dissection, laparoscopic ultrasound mapping, mobilization of the liver,and transection of the parenchyma into right and left lobes. The vascular structures were stapled and sectioned just prior to removal of the specimen. Results Hepatic lobectomies were successfully performed laparoscopically in 9 adult pigs. One pig was dead due to bleeding in IVC and following gas embolism during the parenchymal transection. The operative time was 208±25 min. The duration of warm ischemia was 8 ± 2. 3 min. The blood loss was 313 ± 75 mL. The vascular and biliary structures were preserved to allow for subsequent transplantation. Conclusion Laparoscopic living donor procurement for liver transplantation in a porcine model is safe and feasible.
2.Clinical application of transcatheter arterial thermo-chemotherapy and thermo-lipiodol embolization in treatment of hepatocellular carcinoma
Xuan WANG ; Xiaofei CHEN ; Weihua DONG
Journal of Interventional Radiology 2001;0(06):-
Objective To evaluate the clinical efficacy of thermo-chemotherapy and thermo-lipiodol embolization intreatment of primary hepatocellular carcinoma(PHC).Methods One hundred and sixteen cases of PHC were divided into three groups.Group A(38 cases)was treated with normal temperature chemotherapy and normal temperature lipiodol,Group B(40 cases)with thermo-chemotherapy and normal temperature lipiodol and group C(38 cases)with thermo-chemotherapy and thermo-lipiodol.Group B and group C were called the thermotherapy group.Results In the thermotherapy groups,the rates of tumor size reduction were significantly greater than those in the normal group.There were no significant different in the hepatic function tests among the three groups.The 6-,12-,18-,and 24-month survival rates of the normal group and thermotherapy groups were 97%,58%,39% and 18%,versus 99%,79%,57% and 36%,respectively.No significant differences were found in the rates of reduction of tumor size and survival rates between group B and group C.Conclusion Thermo-chemotherapy and thermo-embolization possess significant effect on PHC but without conspicuous damage to liver function.
3.Effects of Methylphenidate in Children with ADHD:an Event-related Potentials Comparison Study
Yanling REN ; Xuan DONG ; Suhong WANG
Chinese Mental Health Journal 1992;0(01):-
Objective:To investigate the effect of methylphenidate on the ERP waveform of children with attention deficit hyperactivity disorder(ADHD) between responders and non-responders and it's psychological significance.Methods:ERP elicited by the continuous performance test were recorded before and under methylphenidate treatment in 28 ADHD children and their behavioral performance were collected simultaneously.Based on the behavioral results,the patients were divided into two groups:responders and non-responders.Results:After medcation,the responders' behavioral performance were significantly better,amplitude of NOGO-P3(30.24?10.78?v) were also larger than that of before treatment(20.34?11.42?v,P=0.04);No significant differences were found in the behavioral performance and NOGO-P3 amplitude before and after treatment(23.51?11.97?v/25.88?13.96?v,P=0.61) in the non-responders group.The amplitude of NOGO-N2 of the two groups did not have significant difference before and under methylphenidate treatment.Off medication,there were no differences between responders and non-responders.Conclusion:Methylphenidate can improve the ability of response inhibition in responders as well as increase the amplitude of NOGO-P3 of them.
4.The characteristics of post-stroke depression in patients with aphasia
Xuan XU ; Weiqing WANG ; Xiaojia LIU ; Dong CHEN ; Xinyu WANG
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(2):143-145
Objective To compare the characteristics of post-stroke depression in patients with and without aphasia.Methods Seventy patients on the first infarction with aphasia and 70 stroke patients without aphasia were recruited.The aphasia deficits in patients were evaluated by using the Aphasia Battery of Chinese ( Aphasia Battery of Chinese, ABC) .The Stroke Aphasic Depression Questionnaire Hospital Version ( Stroke Aphasic Depression Questionnaire Hospital Version, SADQ-H) was applied to analyze the depression in the two groups.Results The sore in SADQ-H of the aphasia group was significantly higher than the control group( (22.03 ±9.55 )vs ( 16.81 ± 10.47 ), P < 0.01 ) .Loss interest, anhedonia, social avoidance, irritability, depression, decreased attention were more serious in patients with aphasia after stroke than that without aphasia.Compared with control group ,the incidence of depression in aphasia group was higher(64.28% vs 50.00% ).The incidence in different types of aphasia: the complete aphasia ( 78.26% ), transcortical mixed aphasia ( 62.50% ), Broca ( 61.53% ),Werincke (62.50%).There was significantly correlation between the incidence of depression and the severity of aphasia.Conclusion The incidence of depression in stroke patients with aphasia is high,especially who have complete aphasia, transcortical mixed aphasia, Broca and Werincke, and it closely relate to the severity of aphasia.
5.Validation of Stroke Aphasic Depression Questionnaire Hospital Version: comparison with HAMD-17 and BDI-13
Weiqing WANG ; Xuan XU ; Xiaojia LIU ; Dong CHEN ; Xinyu WANG
International Journal of Cerebrovascular Diseases 2011;19(5):376-380
Objective To preliminarily investigate the cutoff value of Stroke Aphasic Depression Questionnaire Hospital Version (SADQ-H) in the diagnosis of post-stroke depression. Methods Using receiver operating characteristic (ROC) curves, the total scores of 17-item Hamilton Depression Rating Scale (HAMD-17) greater than 7 points and Beck Depression Inventory (BDI-13) greater than 4 points were taken as the cutoff values for the assessment of depression. SADQ-H for the assessment of the depression classification standard in patients with post-stroke aphasia was investigated preliminarily by HAMD-17 (8-17 were mild depression; 18-24 were moderate depression, and>24 was severe depression). Results When HAMD-17 was used as a standard, ROC area under curve (AUC) was 0. 909 (95% confidence interval [CI] 0.814-1.005). When 19.50 was used as a cutoff value, the sensitivity, specificity, positive predictive value, negative predictive value, and κ coefficient of SADQ-H were 82. 6%,91.7%, 87. 0%, 83.3%, and 0. 77, respectively. When BDI-13 was used as a standard, ROC AUC was 0. 916 (95% CI 0. 824-1. 008). When choosing 18.50 as a cutoff value of diagnosis,the sensitivity, specificity, positive predictive value, negative predictive value, and κ coefficient of SADQ-H were 80. 0%, 90. 0%, 84. 0%, 90. 0%, and 0. 68, respectively. The classification standards of SADQ-H for the assessment of depression in patients with post-stroke aphasia were 19, 22 and 26 points. Conclusions When the cutoff value of SADQ-H was 19 points, it had higher sensitivity, specificity, positive predictive value and negative predictive value for the assessment of depression; 19, 22 and 26 points could be used as the classification diagnostic standard of SADQ-H in the assessment of depression in patients with post-stroke aphasia.
6.Effect of Pi-Zhen on 5-HT Content in Nerve Endings Tension Pain Rabbit Model
Yongqiang SU ; Fuhui DONG ; Delong WANG ; Xuan WANG
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(6):1256-1260
This article was aimed to explore theeffect of Pi-Zhen(PZ) on 5-hydroxytryptamine(5-HT) in nerve end-ings tension painrabbitmodel. Forty-two healthy male big ear whiterabbits of three months old were randomly divided into 5 groups, which were the normal group,model group, drug group, Hao-Zhen (HZ) group, and PZ group. Nerve endings tension pain modelswere established. No operation was made in the normal group. The amount of 1 ml saline was injected to the operative sitebetween the shallow and deep fascia in each rabbit and then draw out at 5, 10, 20, 30, 40, 50, 60 min after operation. The 5-HT level in extracting solution of different groups was determined with ELISA method. The results showed that PZ interventioncan reducethe 5-HT level ofextracting solution in operative site; and with the increasing of time, the level of 5-HT was gradually reduced. Compared with the model group, the contents of 5-HT in the treatment group were significantly decreased at different time points(P<0.01). The content of 5-HT in the PZ group was significantly higher than that of the normal group at 5 min (P<0.01). Compared with the drug group, the contents of 5-HT in the HZ group and PZ group were significantly increased at 5, 10, 20, 30, 40 min (P<0.01). Compared with the normal group, the contents of 5-HT in the PZ group was significantly decreased at 40, 50, 60 min (P<0.05). Compared with the HZ group, the contents of 5-HT were significantly decreased at 20, 30, 40, 50, 60 min (P<0.01). There was no difference at other time points. It was concluded that PZ can ease pain through reducing the tension of local soft tissues, decreasing 5-HT releasing, and promoting its degradation.
7.Study on effect of NFκB-p65 pathway inhibition in macrophages on cigarette smoke induced non-small cell lung cancer cell NCI-H520 cells proliferation
Dong LI ; Xuan WANG ; Hong ZHOU ; Haiying WAN
Cancer Research and Clinic 2012;24(9):584-588
Objective To investigate the mechanism of cigarette smoke promotes non-small cell lung cancer (NSCLC) NCI-H520 cell line proliferation mediated by macrophages with method of blocking NFκB-p65 pathway by RNAi.Methods To co-culture NCI-H520 cells with primary macrophages or U937 cell line,the Transwell Inserts system was used in cell co-culture model.NFκB activation was confirmed by electrophoretic mobility shift assay (EMSA) and Western blot analysis.U937 cells were transfected with NFκB-p65 shRNA plasmid to abrogate the NFκB activation,by BrdU ELISA,the effect of cigarette smoke extract (CSE) promoted NCI-H520 cells proliferation were assessed,inflammatory factors TNF and IL-6 expressions were analysed by ELISA.Results Exposure of CSE enhanced NFκB-p65 nuclcus translocation and activated the NFκB pathway.CSE did not promote NCI-H520 cells proliferation alone (P > 0.05),but after 4 days coincubation with macrophages,the proliferation of NCI-H520 cells was significantly increased (P <0.01),addition of CSE to the co-culture much more enhanced this effect (P < 0.01).After NFκB-p65 was blocked by RNAi,it significantly reduced NFκB-p65 protein expression and inhibited NFκB activation in U937 p65-cells,and markedly inhibited U937 cells induced proliferation of NCI-H520 cells and IL-6,TNF secretion (P < 0.01).Conclusion Cigarette smoke promotes NCI-H520 cells proliferation mediated by macrophages.Blockade of NFκB pathway with RNAi in macrophages can reduced cigarette smoke induced inflammatory factors secretion in macrophages,and significantly inhibit cigarette smoke promoted tumor proliferation.
8.An event-related potentials study on children with attention deficit hyperactivity disorder before and after EEG biofeedback therapy
Yanling REN ; Suhong WANG ; Ling MA ; Xuan DONG
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(12):1057-1059
Objective To examine the curative effect of EEG biofeedback therapy on children with attention deficit hyperactivity disorder (ADHD),and to investigate the neural mechanism underlying the executive function in children with ADHD.Methods 42 children with ADHD participated a Go/Nogo task before and after the EEG biofeedback therapy which was consisted of 20 times of treatments.The curative effect was evaluated using the behavioral and electrophysiological indexes associated with the Go/Nogo processing in the experiment.Results Commission error significantly decreased after the therapy ( (2.95 ±2.22 ) vs (4.65 ±4.47),P<0.05 ).Latencies of P2 ( (210.00 ± 27.54) ms vs ( 228.27 ± 34.17 ) ms) and N2 components ( ( 310.59 ± 45.82) ms vs (328.00 ± 42.27)ms) elicited by Go trials significantly exhibited shorter at the end of therapy.Additionally,the amplitude of N2 component elicited by Nogo trials exhibited significantly decreased after therapy ((0.23 ±3.79)μV vs (-1.84 ± 4.23 ) μV,P < 0.05).Conclusion The EEG biofeedback therapy is effective in debasing the hyperactivity/impulsive behaviors and improving the ability of target detection,which may be beneficial to the attention ability and conflict detecting in children with ADHD.EEG biofeedback is an effective treatment to ADHD.
9.Surgery experience in microvascular decompression for trigeminal neuralgia
Zhen QI ; Huachao HAO ; Peng WANG ; Xuan DONG
Clinical Medicine of China 2012;28(3):302-303
Objective To explore the efficacy of microvascular decompression (MVD)on trigeminal neuralgia and the anatomical characteristics of the responsible blood vessels.Methods The clinical data of 25patients with idiopathic trigemine neuralgia(ITN) undergoing MVD were analyzed retrospectively.The origins of the responsible blood vessels and sites of compression at the trigeminal root were observed and determined.Meanwhile,the anatomical characteristics of the responsible blood vessels and the efficacy of MVD were investigated.Results The offending vessels which were responsible for ITN were identified at root exit zone (REZ) in 21 cases (84%).The most common responsible vessel was the superior cerebellar artery in 13 cases (52%),followed by anterior inferior cerebellar artery in 6 cases (24%).Seventy six percent of the offending vessels were arteries and 8% were rock vein.No vascular compression but evident increase in the thickness of arachnoid mater covered by the trigeminal nerve was observed in 4 cases ( 16% ).All patients were relieved for the acute pain and the overall cure rate was 96%.Conclusion MVD is a safe,microinvasive and effective surgical modality for ITN.The key for better outcomes and less complications of MVD is to improve microsurgical techniques and deal with all the involved vessels.
10.Therapeutic evaluation of biofeedback treatment on ADHD with IVA-CPT multi-quotients
Ling MA ; Yanling REN ; Suhong WANG ; Xuan DONG
Chinese Journal of Behavioral Medicine and Brain Science 2010;19(6):489-491
Objective To investigate the curative effect of biofeedback treatment on attention-deficit/hyperactivity disorder ( ADHD ) patients using integrated visual and auditory continuous performance test ( IVA-CPT).Methods 23 ADHD patients undertaked 20 times of EEG biofeedback treatment using VBFB-3000A facility.Their executive and attention quotients were measured before and after treatment by IVA-CPT.Results The pre-therapy full scale of response control and attention quotients of ADHD were 58.26 ± 32.9 and 54.43 ±34.01 respectively.After the therapy, all the quotients got improved (response control 99.3 ± 12.6, attention 84.1 ± 15.9 ) except for stamina and speed quotients both in visual and in auditory.Conclusion Shortterm EEG biofeedback treatment is one of effective methods for ADHD patients,especially for hyperactive cases.