1.Progress of the diagnosis and treatment of high-grade gliomas
Clinical Medicine of China 2016;32(7):670-672
Objective Systematically reviewed the standard treatment of primary brain glioma patients high levels,and discussed effective new therapies. Surgery,radiotherapy and chemotherapy are the main methods of treatment of high?grade gliomas, molecular markers supplement clinical prognostic factors under certain circumstances be able to guide treatment decisions. The rapid development of technology using molecular data can improve our understanding of the disease pathogenesis and proliferation. Effectively validate prognostic biomarkers and identification of tumor may improve the outcome.
2.Salveanolic acid B promotes the mobilization and adhesion of endothelial progenitor cells
Chinese Journal of Tissue Engineering Research 2017;21(21):3352-3357
BACKGROUND:Vascular endothelial injury usually appears following atherosclerosis, hypertension, diabetes mellitus and other diseases, which can be repaired by endothelial progenitor cells (EPCs) in the systemic circulation. OBJECTIVE:To study the effect of salveanolic acid B on the mobilization and adhesion of EPCs in mice. METHODS:Thirty C57BL/6 mice were selected and randomly divided into surgical and non-surgical groups, (n=15 per group). Common carotid arteries of mice in the surgical group were injured by iron wire, then were subdivided into three groups (n=5 per group), and were given the injection of 5% of glucose (control group), 100 g/L salveanolic acid B and 10 μmol/L vascular endothelial growth factor, respectively. Meanwhile, the mice in the non-surgical group received the same assignment and treatment, but the common carotid arteries were not injured. After consecutive 7-day administration, the EPCs in the peripheral blood of the mice were isolated, and the EPCs adhesion was tested by flow chamber experiment. The serum levels of stromal cell-derived factor-1 and interleukin-8 were detected by ELISA kits. RESULTS AND CONCLUSION:The proportion of EPCs in the surgical group was significantly increased compared with the non-surgical group (P < 0.05). After 7-day administration, the proportion of EPCs in the salveanolic acid B and vascular endothelial growth factor subgroups of the surgical group was significantly higher than that in the control subgroup (P < 0.05); the proportion of EPCs in the vascular endothelial growth factor subgroup of the non-surgical group was significantly higher than that in the control and salveanolic acid B subgroups (P < 0.05). Flow chamber experiment revealed that the number of EPCs in the salveanolic acid B subgroup was significantly more than that in the control subgroup (P < 0.05). In the surgical group, the serum levels of stromal cell-derived factor-1 and interleukin-8 in the in the salveanolic acid B and vascular endothelial growth factor subgroups were significantly higher than those in the control subgroup (P < 0.05); in the non-surgical group, the serum levels of stromal cell-derived factor-1 and interleukin-8 in the in the vascular endothelial growth factor subgroup were significantly higher than those in the control subgroup (P < 0.05). To conclude, salveanolic acid B can increase the efficiency of the EPCs mobilization in bone marrowin vivo, help the EPCs adhere to the collagen surface, and upregulate the serum levels of stromal cell-derived factor-1 and interleukin-8.
3.Effect of Dachengqi Decoction Combined with the Treatment Principle of Promoting Production of Body Fluid with Sweet-Flavored and Cold-natured drugs on the Earth-dry and Water-exhaust Syndrome
Journal of Traditional Chinese Medicine 1993;0(06):-
Objective:To probe the mechanism of Dachengqi Decoction combined with the treatment principle of promoting production of body fluid with sweet-flavored and cold-natured drugs on the earth-dry and water-exhaust syndrome.Methods:Chinchilla Giganta rabbits were randomly divided into four groups,i.e. blank control group,pathological model group,timely purgation to preserve Yin treatment group and treatment group of purgation with drugs sweet in favor and cold in nature.Changes of symptoms,signs,pathological changes of organs,WBC count,nitric oxide(NO),superoxide dismutase(SOD),malondialdehyde(MDA),middle molecular substances(MMS),sulfydryl(-SH),K+ and Na+,and viscosities of whole blood and plasma before and after treatment were investigated.Results:There were significant differences in decrease of body temperature,increases of SOD,MMS,K+ and Na+,decreases of NO,MDA,-SH and viscosities of whole blood and plasma as the two treatment groups compared with the pathological model group(P
4.Value of annular plane systolic excursion difference in evaluation of heart systolic function of normal fetuses in ;the second and late trimester with echocardiography
Xianfeng GUO ; Bowen ZHAO ; Yilin LI
Chinese Journal of Ultrasonography 2015;(8):665-670,674
Objective To obtain the annular plane systolic excursion difference (APSED)of fetuses in second and late trimester by free angle M-mode (FAM)and tissue motion of annular displacement (TMAD)in order to assess the fetal ventricular function.Methods The mitral annular plane systolic excursion(MAPSE)and tricuspid annular plane systolic excursion(TAPSE)of four hundred and fifty five normal fetuses from 20 to 41 weeks were measured by FAM echocardiography,and the difference between them were calculated.Early diastolic velocities (Em)of the mitral annular and early diastolic velocities (Em')of the tricuspid annular were estimated by pulsed-wave tissue Doppler imaging (TDI),meanwhile systolic velocities (Sm)of the mitral annular and systolic velocities (Sm')of the tricuspid annular were also estimated by TDI.Fifty normal fetuses in the second and late trimester were choosed randomly,two-dimension imaging was obtained at the apical four-chamber view,then mitral annular plane and tricuspid annular plane displacement curve were acquired at the same time by using off-line QLab 8.1 software,and the differences in the peak time between them were compared.The trace of annular displacement were recorded by color tissue tracking technology.Results There was a significant difference between FAM-TAPSE and FAM-MAPSE in different gestational weeks (P <0.05),FAM-TAPSE was growing with the increase of gestational weeks,FAM-APSED showed significant positive correlations with gestational week, Em,Sm,Em' and Sm'.Annular plane displacement curve showed that TMAD-TAPSE was higher than TMAD-MAPSE in the entire cardiac cycle,and there was no statistically significant difference in time to peak of the annular plane displacement curve between them(P >0.05).Conclusions The APSED existed in the second and late trimester continually.It was considering associated with fetal ventricular torsion.As the growth of gestational weeks,the increase of APSED reflected the enhanced reserve capacity of the fetal ventricular torsion.APSED can reflect the longitudinal motion and torsion movement of fetal ventricle quantitatively,and can be used as a new index to assess the fetal cardiac function.
5.Detecting rate of nonfermenters and their resistance to antibiotics in nosocomial infections
Hu ZHAO ; Xianfeng CHEN ; Tingyin ZHOU
Academic Journal of Second Military Medical University 1999;0(12):-
Objective:To study the detecting rate of nonfermenters and their resistance to the antibiotics in nosocomial infections in our hospital. Methods:The bacteria were identified by VITEK-AMS, the susceptibility tests(K-B method) were done according to the NCCLS standard and the results were analyzed. Results: The detecting rate of nonfermenters was 14. 29%. The most common bacterium was P. aeruginosa (the component ratio was 44. 22%). followed by A. baumannnii (32. 17%) and S.maltophilia(9.23%). The infectious rates of nonfermenters were different at different infectious sites, with the highest rate in the respiratory system and the lowest in central nervous system. The resistant rate to the antibiotics of P. aeruginosa was 45. 21% ,of A. baumannnii 47. 85% and of S. maltophilia 64. 02%. Conclusion:The detecting rate of nonfermenters is rather high in the nosocomial infection in our hospital. Due to the high resistant rates of nonfermenters to the antibiotics , the drugs should be chosen accoding to the result of the drugs susceptibility test.
6.Application of annular plane systolic excursion z-score in evaluation of heart systolic function of fetus with heart failure
Xianfeng GUO ; Bowen ZHAO ; Yilin LI
Chinese Journal of Ultrasonography 2017;26(2):121-125
Objective To establish z-score model for fetal tricuspid annular plane systolic excursion(FAM-TAPSE) and mitral annular plane systolic excursion(FAM-MAPSE) based on gestational age(GA),then to evaluate the ventricle systolic function of fetus with heart failure.Methods One thousand and twelve normal fetuses and 24 fetuses with heart failure were involved. FAM-TAPSE and FAM-MAPSE were measured by free angle M-mode echocardiography,and FAM-TAPSE and FAM-MAPSE z-score models of normal fetuses were constructed by using first standard regression analysis with GA as independent variable.The fetuses with heart failure were divided into left heart failure (LHF) group and right heart failure (RHF) group by Tei index.Subsequently,the two parameters between normal and fetuses with heart failure were compared. Results The models used to calculate z-score for FAM-TAPSE and FAM-MAPSE were constructed,and GA had close correlation with them. Compared with normal fetuses,the mean z-scores of FAM-TAPSE and FAM-MAPSE were statistically different in fetuses with heart failure(P<0.001). The FAM-MAPSE z-scores of LHF and the FAM-TAPSE z-scores of RHF were all less than-2 z-scores.Conclusions The FAM-TAPSE and FAM-MAPSE z-scores decline in fetuses with heart failure and they can provide quantitative evidence in evaluation of heart systolic function,FAM-TAPSE and FAM-MAPSE z-score would be markers for assessing heart systolic function in fetuses with heart failure.
7.Z-score analysis of tricuspid annular plane systolic excursion in normal fetuses with fetal echocardiography
Xianfeng GUO ; Bowen ZHAO ; Yilin LI
Chinese Journal of Ultrasonography 2015;24(11):951-954
Objective To develop Z-score reference ranges for tricuspid annular plane systolic excursion(TAPSE) in normal fetuses from the measurements of gestational age(GA),biparietal diameter (BPD) or femur length(FL) using fetal echocardiography.Methods A retrospective cross sectional study of 1012 singleton normal fetuses were performed.The gestation age ranged from 20 to 41 weeks.Non-cardiac fetal biometric parameters included GA and BPD and FL were measured and calculated GA based on menstrual age.TAPSE was measured in a standard apical four-chamber view by free angle M-mode echocardiography.Normal Z-score ranges were developed for TAPSE using GA,BPD and FL as independent variables.These were accomplished by using first standard regression analysis and then weighted regression of absolute residual values for each parameter in order to adjust for inconstant variance.Results Linear regression model was the best description of the data in each case and correlations between TASPE and independent variables (GA,BPD,FL) were excellent.Heteroscedasticity of standard deviation (SD) with increasing independent variables also could be modeled with a simple linear regression.According to these equations,TAPSE Z-score =(the actual measurement of TAPSE-predicted TAPSE)/prediction SD.Conclusions Normal reference ranges and Z-scores for TAPSE have been provided.These normative data may be useful tools for assessment of fetal TAPSE,to evaluate fetal right ventricular function more accurately and effectively.
8.The design of plantar pressure distribution monitoring system and preliminary clinical application.
Xianfeng ZHU ; Zilei ZHAO ; Donghao XU ; Dongming XU
Journal of Biomedical Engineering 2014;31(2):439-444
Plantar pressure distribution can reflect the force of several key points on foot while standing and walking. A comprehensive understanding of the plantar pressure distribution makes great sense in the following aspects: the understanding of the normal foot biomechanics and function, clinical diagnosis, measurement of disease extent, postoperative efficacy evaluation, and rehabilitation research. A simple plantar pressure measurement device was designed in this study. This paper uses FlexiForce flexible sensor to pickup plantar pressure signal and USB A/D board to do data acquisition. The data are transferred into a laptop and processed by a VB-based software which can display, remember and replay the data. We chose patients with hallux valgus and normal people to measure the pressure distribution and make contrast analysis of plantar pressure with this device. It can be concluded that people with hallux valgus have higher pressure on the second metatarsophalangeal joint and the distribution move outward. The plantar pressure of patients postoperative could be greatly improved compared to the preoperative. The function of this device has been confirmed.
Foot
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physiology
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Hallux Valgus
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physiopathology
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Humans
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Metatarsophalangeal Joint
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physiopathology
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Monitoring, Physiologic
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instrumentation
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Pressure
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Walking
9.Evaluation of therapeutic effects of antiretroviral therapy on pediatric acquired immune deficiency syndrome
Xianfeng SHI ; Dianding ZOU ; Xien GUI ; Dongchi ZHAO
Chinese Journal of Infectious Diseases 2010;28(8):480-483
Objective To evaluate the therapeutic effects of antiretroviral therapy(ART)on human immunedeficiency virus (HIV)-1-infected children. Methods Twenty-two HIV-1-infected children who met World Health Organization (WHO) criteria for treatment received ART and were prospectively enrolled in this study. ART contained two kinds of nucleoside reverse transcriptase inhibitor (NRTI) combined with one kind of non-nucleoside reverse transcriptase inhibitor (NNRTI).Before ART and 1-36 months after ART, height, body weight, blood routine, peripheral CD4+ and CD8+ T cell counts and plasma viral load were followed up regularly. Comparison between groups was done by test. Results Among the 22 pediatric AIDS patients, 19 cases (86.4%) achieved clinical improve, whose height and body weight increased significantly 6 months after ART (height = 1 :1.04±0. 02, t=2. 356, P<0. 05; body weight= 1: 1. 14±0. 01,t=2. 567,P< 0. 05) and opportunistic infection rate decreased (72.7 % vs. 27.3 %) ; 3 patients (13.6 % ) deteriorated, whose height and body weight increased slowly and even decreased, 2 of them died. In the 19 improved patients, viral load declined to <2.7 lg copy/mL at month 3 of ART, CD4+ T cell counts and CD4+/CD8+ ratio significantly increased at month 3 of ART (CD4+ T cell counts: 145.50±86.72 vs. 262.80±213.62,t=2. 668, P<0.05; CD4+/CD8+ ratio: 0. 14±0. 11 vs. 0.23±0. 21,t=2. 607, P<0. 05) and CD4+/CD8+ ratio peaked at month 9 and absolute number of CD4+ T cell counts peaked at month 12 and maintained at high level until month 36, peripheral white blood cells (WBC) and red blood cells (RBC) both decreased, while hemoglobin (Hb) contents increased significantly (107.29 ± 13.74 vs. 112. 15±11.20,t=2. 325,P<0. 05). Conclusion ART is an effective strategy for inhibition of HIV-1 replication,reconstruction of immune responses and improvement of clinical symptoms in AIDS children.
10.Examining method and equipment of ultrasonic knife frequency
Liming TANG ; Min WU ; Tiebing LIU ; Haiyang ZHAO ; Xianfeng JIANG
Chinese Medical Equipment Journal 1989;0(04):-
Objectives To detect ultrasonic knife frequency and correct the result.Methods Oscillography analysis law was adopted to determine the frequency.Results Oscillography analysis law was practical for the determination of ultrasonic knife frequency.Conclusion This paper realizes the quantitative detection of ultrasonic knife frequency without related national standard and industrial standard.