1.Application of self-expanding stent and seperable detachable coil for interventional therapy in patients with wide-necked intracranial aneurysm
Gang PANG ; Quan XIAO ; Shu ZHONG
Journal of Clinical Neurology 1997;0(06):-
Objective To explore the application of self-expanding stent and seperable detachable coil for interventional therapy in patients with wide-necked intracranial aneurysm.Methods 32 patients with wide-necked intracranial aneurysm received the interventional therapy by self-expanding stent and seperable detachable coil.After operation,the situation of the aneurysm occluded were observed by DSA immediately and followed up.Results The stents were successfully deployed in the 32 patients.The seperable detachable coils were occluded in the aneurysms in 29 cases.After operation immediately,the DSA showed that the aneurysms in 18 cases were completely occluded by seperable detachable coils,7 cases were 95% occluded,4 cases were 90% occluded.In the other 3 cases,the aneurysms were too small to be filled by seperable detachable coil,the stents were used only.All the parent arteries were no stenosis.18 h after operation,1 case died from multiple hemorrhage caused by thrombasthenia.Follow-up from 3 months to 1 year,DSA re-examination in 21 cases.Compared with the image immediately after operation,the imagings of DSA were no change in 12 cases,residual necks were disappeared in 5 cases and increased in 1 case.In the 3 cases which stents used only,the aneurysms were no development completely in the 2 cases and decreased in 1 case.6~18 months followed up in 26 cases,the rebleeding and cerebral infarction were no occurred.Conclusions The self-expanding stent is very flexible,secure,and effective.It can good support for the wide-necked aneurysms to be occluded by seperable detachable coils and effective promoting the small aneurysms healing.
2.Effect of F10 gene on activities of transcriptional factor NF-?B and AP1
Xiaomin CAO ; Zhanjun PANG ; Song QUAN ; Fuqi XING
Chinese Journal of Pathophysiology 1989;0(05):-
AIM:To investigate the influence of F10 on the activities of transcription factor NF-?B and AP1 in A549 cells.METHODS:The luciferase report plasmids of NF-?B-Luc,AP1-Luc and F10 gene were introduced into A549 cells and the luciferase activity was detected.The DNA binding activities of AP1 and NF-?B in the cells were measured by the electrophoretic mobility shift assay(EMSA).RESULTS:The luciferase activity in F10+ transfection group decreased 30% and increased 2-fold respectively 48 h after transfected with the luciferase report plasmid of NF-?B-Luc and AP1-Luc in A549 cells.The DNA binding activity decreased 49% and increased 23%,respectively.CONCLUSION:F10 gene up-regulates the transcription activity of AP1 and down-regulates the NF-?B in A549 cells.
3.Venlafaxine vs furazolidone in treating harmful alcoholics
Li ZHANG ; Chengshi QUAN ; Zhixing PANG ; Zhensu PIAO
Chinese Journal of New Drugs and Clinical Remedies 2001;20(2):111-113
AIM: To compare the effects, adverse reactions and emotion change of venlafaxine vs furazolidone for harmful alcoholics. METHODS: Sixty-eight patients with harmful alcoholics were divided into two groups. Thirty-four patients (M34; age 37 a± s 6 a) were treated with venlafaxine, 25-50 mg, po, tid, for 8 wk. The other thirty-four patients (M34;age 38 a±6 a) with furzolidone, 0.1-0.2 g, po, tid, for 8 wk, with drinking alcohol at regular intervals during treating with furazolidone. RESULTS: The total effective rate was 79% in venlafaxine group at 3 mo. There were no obvious adverse reactions, the anxiety disorder and depressive disorder during treating with venlafaxine. And the total effective rate was 65% in furazolidone group (P<0.05). There were obvious adverse reactions such as hypotension, myocardial ischemia, anxiety disorder and depressive disorder after treating with furazolidone. CONCLUSION: Adverse reaction of venlafaxine on harmful alcoholics is smaller than furazolidone and the effect of venlafaxine on alcoholics is better than furazolidone.
4.Establishment and evaluation based of a RIG-G gene detection system by TaqMan-MGB probe real-time PCR
Li PANG ; Wenqiang QUAN ; Junlu WU ; Yiwen YAO ; Dong LI
Chinese Journal of Laboratory Medicine 2016;39(12):936-940
Objective To establish a TaqMan-MGB fluorescent probe characterized real-time polymerase chain reaction ( qPCR) method for detecting retinoic acid induced genes G ( RIG-G) in human acute promyelocytic leukemia ( M3 ) .Analyze RIG-G expression levels in peripheral blood of both normal persons and M3 patients and explore its diagnosis value for M 3.Methods Methodology establishment study.A detection method and standard curve of TaqMan-MGB real-time PCR were established after designing specific primers and TaqMan-MGB fluorescence probe of human RIG-G gene and using reverse transcription complementary DNA ( cDNA) as a template.The performance of this method was evaluated in specificity, accuracy, precision, analytical sensitivity and interference substances . Twenty clinical specimens with M3 were quantified RIG-G expression so as to evaluate the correlation between peripheral blood and bone marrow samples .Meanwhile , the results of RIG-G expression in peripheral blood of 40 normal specimens and 20 patients with M3 were analyzed by t-test.And receiver-operating characteristic curve ( ROC ) was used to analyze the detection efficiency of M 3.Results There was a good linear relationship between log value of RIG-G standard substance and threshold cycle number ( Ct ) ( standard curve equation:Y=-3.539X+42.952,R2 =0.999).New method was used to detect standard substance . The deviation between observed and expected values was <5% (r=0.999).Three concentration samples (107 ,104 ,101 copies/μl) were selected for precision test.Intra-assay coefficients of variation were 1.38%, 2.31% and 1.38%, respectively , and intre-assay coefficients of variation were 0.71%, 1.17% and 5.07%, separately.All were less than 10%.The sensitivity of this method was 101 copies/μl.There was a good correlation of RIG-G results between peripheral blood and bone marrow in M 3 patients(r=0.996, b=0.973).But there was no significant difference between this two group results (t=0.099, P>0.05). However , there was obvious difference of RIG-G value in peripheral blood between control group and M 3 patient group (U=18,P<0.001), 3.62 ×104(1.61 ×104 -4.90 ×104)copies/μl for controls and 7.10 ×102 (5.43 ×102 -2.21 ×103 ) copies/μl for M3 patients, respectively.Conclusions Successfully establishe a TaqMan-MGB real-time PCR method for detecting RIG-G gene in peripheral blood.The accuracy, precision, sensitivity and specificity are good .It could provide necessary help in early diagnosis and monitor treatment of clinical M3 patients.
5.Application of Fluctuation Complexity Measure to Speech Endpoint Detection
Yingle FAN ; Chuanyan WU ; Yi LI ; Quan PANG
Space Medicine & Medical Engineering 2006;0(06):-
Objective To find a useful index for real-time detecting of speech endpoint and improving the performance of speech processing under low SNR by analyzing fluctuation complexity of speech signals. Method The influence of state space partition method, window size and partition numbers on detecting performance was analyzed. The comparison experiments of speech signals corresponding to different SNR and noise type was designed using the measure of complexity behaviors based on the information gain.Result It was found that fluctuation complexity was more effective in detecting low-SNR speech than spectral entropy. Conclusion Fluctuation complexity is a valid feature to make speech/non-speech decision for the low SNR cases. The presented method can achieve robust performance and has a good real-time behavior.
6.Prescription Screening Test and Inhibitory Rate Experiment of Blumea Gynecological Lotion
Yan CHEN ; Kai WANG ; Quan YANG ; Yuxin PANG
Chinese Journal of Information on Traditional Chinese Medicine 2017;24(3):87-90
Objective To screen the presciption of Blumea gynecological lotion and investigate the inhibitory effect through inhibition rate test; To provide a basis for clinical application. Methods Consumption of Tween-80, SLES, hydrogenated castor oil (RH-40), and clarity of the solution were selected as the evaluation indexes to optimize the solubilizing agents. By using the filter paper method and the inhibition zone size as the evaluation index, the antimicrobial effect on Staphylococcus aureus. Escherichia coli and Candida albicans was studied to screen the best antibacterial agent from 2 g/L GM-BP, 2 mL/L PHMB, 2 mL/L A.SAP. With Blumeapowder dissolution percentage as the evaluation index, orthogonal test was used to screen additives in the lotion. Finally, the bacteriostasis effect and stability of the obtained lotion were investigated in vitro. Results The order of solubilizing effect was RH-40>SLES>Tween-80, and that of inhibition zone size was PHMB>A.SAP>GM-BP. The best prescription as follows:0.6 mg/mL Blumea powder, 0.04 g/mL SLES, 0.01 g/mL CAB-35, 10% propylene glycol. Bacteriostatic rates of Blumea gynecology lotion sample were more than 90%, and bacteriostatic rates remained more than 80% after 3 months. Conclusion The prescription of Blumea gynecology lotion is reasonable and practicable, with simple preparation process, available materials and good inhibitory effect and stability.
7.Effect of Mild Hypothermia Therapy on Elderly Patients with Massive Hemispheric Infarction and Hyperpyrexia
Hong-yu LU ; Quan-tang PANG ; Shu-pin LIU
Chinese Journal of Rehabilitation Theory and Practice 2006;12(8):663-664
ObjectiveTo observe the effect of mild hypothermia on vital signs of the elderly patients with anterior circulation brain infarction (massive hemispheric infarction) and hyperpyrexia.Methods46 elderly patients with massive hemispheric infarction and hyperpyrexia within the first 24 hours after onset were randomly divided into the control group and the hypothermia group with 23 cases in each group. The patients of the hypothermia group were treated with mild hypothermia therapy (33℃~35℃). Those of the control group were treated with routine hypothermal treatment. The temperature and heart rate of all patients were measured after 10 days; the prognosis was evaluated according to mortality and scores of Neurological Deficit Scale (NDS).ResultsFor patients of the hypothermia group, the temperature and heart rate significantly reduced, death rate was significantly lower, the neurological function distinctly improved and prognosis was better than the control group after 10 days treatment ( P<0.05).Conclusion Mild hypothermia is safe and effective to elderly patients with massive hemispheric infarction and hyperpyrexia.
8.Bladder anatomical changes and dose variation during the course of intensity-modulated radiation therapy of cervical cancer
Haowen PANG ; Jie QIU ; Hong QUAN ; Shuai SUN ; Bo YANG ; Qiu GUAN ; Fuquan ZHANG
Chinese Journal of Radiation Oncology 2011;20(3):218-221
Objective To investigate bladder anatomical changes and dose variation in patients with cervical cancer.Methods We analyzed 20 patients,undergoing external beam radiotherapy scanning cone beam CT(CBCT)before each fraction.Bladder was contoured on each CBCT,was projected onto the planning CT and assesses anatomical changes and dose variation.Results A total 451 CBCT images,for 20 patients were collected for analysis,show more change in bladder volume and position.In 15 cases bladder volume and V45 had no significant correlation(r=0.225 -0.473,all P>0.05),4 cases shows negative correlation(r=-0.564,P<0.05;r=-0.597,P<0.01;r=-0.942,P<0.01;r=-0.816,P<0.01),1 case shows positive correlation(r=0.662,P<0.01).Have more than the criteria(V45≤50%)number is 64/451(14.2%)in whole treatment.Conclusions For most patients by filling adequacy bladder,bladder dose variation is acceptable:CTV lager for individual patients should be closely observed its regression,implementation of the offline or online calibration.
9.A study of sleep stage classification based on permutation entropy for electroencephalogram.
Gu LI ; Yingle FAN ; Quan PANG
Journal of Biomedical Engineering 2009;26(4):869-872
This paper presents a new method for automatic sleep stage classification which is based on the EEG permutation entropy. The EEG permutation entropy has notable distinction in each stage of sleep and manifests the trend of regular transforming. So it can be used as features of sleep EEG in each stage. Nearest neighbor is employed as the pattern recognition method to classify the stages of sleep. Experiments are conducted on 750 sleep EEG samples and the mean identification rate can be up to 79.6%.
Classification
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methods
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Electroencephalography
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methods
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Entropy
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Humans
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Pattern Recognition, Automated
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Signal Processing, Computer-Assisted
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Sleep Stages
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physiology
10.Protective effect of mailuoning injection on cerebral ischemia/reperfusion injury in rats and its mechanism.
Xiao-Bin PANG ; Xin-Mei XIE ; Hai-Yan WANG ; Bao-Quan WANG
China Journal of Chinese Materia Medica 2014;39(4):721-725
OBJECTIVETo discuss the protective effect of Mailuoning injection on ischemia/reperfusion (I/R) injury in rats and its mechanism.
METHODHealthy male adult Sprague-Dawley (SD) rats were randomly divided into the sham operation group, the model group, the edaravone (3 mg x kg(-1)) control group, and Mailuoning high, middle and low-dose groups (4, 2, 1 mL x kg(-1)), with 10 rats in each group, and administered with drugs through tail intravenous injection. The middle cerebral artery occlusion (MCAO) was adopted to establish the rat ischemia/reperfusion model. After the ischemia for 2 h and reperfusion for 24 h, the pathological changes in neurovascular units (NVU) of brain tissues at the ischemia side was observed by HE staining. The expressions of glialfibrillary acidic protein (GFAP) and ionized calcium-binding adaptor molecule 1 (Ibal) were detected by the immunohistochemical method. The expressions of tumor necrosis factor-alpha (TNF-alpha), interleukin 1beta (IL-1beta), vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were detected by the western blotting technique.
RESULTMailuoning injection could significantly improve the pathological changes in cortical penumbra brain tissue UVN of (I/R) rats, reduce the number of GFAP and Ibal positive cells, and significantly decrease the expressions of TNF-alpha, IL-1beta, VCAM-1 and ICAM-1 of brain tissues of I/R rats.
CONCLUSIONMailuoning injection shows an obvious protective effect on UVN of I/R rats. Its mechanism may involve the inhibition of the activation of astrocyte and microglia and the secretion and expression of various inflammatory factors.
Animals ; Brain ; drug effects ; metabolism ; Brain Ischemia ; surgery ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Infarction, Middle Cerebral Artery ; genetics ; metabolism ; Intercellular Adhesion Molecule-1 ; genetics ; metabolism ; Male ; Protective Agents ; administration & dosage ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; genetics ; metabolism ; prevention & control ; Tumor Necrosis Factor-alpha ; genetics ; metabolism ; Vascular Cell Adhesion Molecule-1 ; genetics ; metabolism