1.Preliminary discussion of cooperation in international medical assistance
Chengwei ZHANG ; Faqiang WANG ; Shike HOU
Chinese Journal of Hospital Administration 1996;0(02):-
The paper sums up experience in offering medical assistance to earthquake and tsunami victims in Algeria,Iran and Indonesia and discusses ways of strengthening cooperation between various rescuing teams and enhancing the efficiency and level of medical assistance,including exchanging medical assistance information in a timely and fast manner,jointly setting up emergency care stations in areas that could make use of the functions of the field hospitals,jointly conducting sanitation and anti-epidemic activities,resuming the treatment functions of clinics,grass-roots hospitals and large hospitals,and training medical workers.By strengthening cooperation between various international rescue teams,it is possible to bring into full play the advantages of each team,effectively use medical resources,and speed up the reconstruction of the medical systems in the disaster-stricken areas.
2.Comparison of fibrinolysis in patients undergoing nasal polypectomy under different methods of anesthesia
Chengwei ZHANG ; Haiyan XU ; Chunrui SHA
Chinese Journal of Anesthesiology 2014;34(8):962-964
Objective To compare the fibrinolysis in the patients undergoing nasal polypectomy under different methods of anesthesia.Methods Forty ASA physical status Ⅰ or Ⅱ patients,scheduled for elective nasal polypectomy,were randomized into 2 groups (n =20 each) using a random number table:propofol-based anesthesia group (group P) and sevoflurane-based anesthesia group (group S).Venous blood samples were taken before induction of anesthesia (T1),at 30 min after the beginning of operation (T2),and at the end of operation (T3) for determination of the levels of plasma cortisol,adrenocorticotropic hormone (ACTH),D-dimer (DD),tissue-type plasminogen activator (t-PA) and plasminogen activator inhibitor 1 (PAI-1).Results Compared with the baseline value at T1,the plasma cortisol and ACTH levels were significantly decreased at T2,and no significant change was found at T3 in the two groups,and there was no significant difference between the two groups.The plasma DD,t-PA and PAI-1 levels were significantly higher at T2,3 than at T1.Compared with group P,the plasma DD and t-PA levels were significantly decreased at T2,3,while the plasma PAI-1 level was increased at T2.3 in group S.Conclusion Propofol-based anesthesia provides higher degree of enhancement in fibrinolysis than sevoflurane-based anesthesia and it is more suitable for the patients undergoing nasal polypectomy.
3.The inhibition of antisense RNA retroviral vector of mTOR on proliferation of vascular smooth muscle cells
Xinhua HU ; Qiang ZHANG ; Jun YANG ; Chengwei LIU ; Zhishen ZHANG
Chinese Journal of General Surgery 2000;0(12):-
Objective To study the effect of antisense RNA retroviral vector of mTOR on the proliferation of vascular smooth muscle cells(VSMC).Methods The conservative region of mTOR gene was inserted into pLXIN reversedly,then the vector was packaged in PT67 cells by transfection with lipofectamine and(transfected) to VSMC.The efficiency of antisense inhibition was verified,and the changes of p70S6k and(4E-BP1) were also determined at the same time.The proliferation activity was determined by flowcytometry and MTT.Results After the vector was successfully transfected to the cells.pLXIN-A-mTOR vector could(efficiently) decrease mRNA and protein expression of mTOR and p70S6k of the cell,while the expression of 4E-BP1 increased significantly.The cell cycle and proliferation activity of VSMC was also stunned in phase G_1.Conclusions The mTOR antisense retroviral vector,pLXIN-A-mTOR,has been constructed(successfully),which can significantly inhibit the proliferation of VSMC.
4.The expression of mammalian target of rapamycin in autogenous vein graft in rats
Xinhua HU ; Jun YANG ; Chengwei LIU ; Zhishen ZHANG ; Qiang ZHANG
Chinese Journal of General Surgery 2000;0(12):-
Objective To study the expression of mammalian target of rapamycin (mTOR) in autogenous vein graft. Methods Autogenous vein graft model was established in 64 Wistar rats. Graft vein was harvested 6 hours, 1 day, 3 days, 1 week, 2 weeks, 4 weeks, 6 weeks and 8 weeks after transplantation. mTOR mRNA was measured by RT-PCR and in situ hybridization. Western blotting and immunohistochemistry methods were used to detect the expression of mTOR. PCNA expression was detected. Results The vein graft mRNA and protein expression of mTOR increased soon after transplantation. mTOR mRNA reached the peak 1 to 2 weeks after surgery [(48?18)% and (33?11)% respectively, P
5.The expression and significance of JNK and p38 MAPK in vascular remodeling of autogenous vein graft
Xinhua HU ; Jun YANG ; Chengwei LIU ; Hongwei ZHANG ; Qiang ZHANG
Chinese Journal of General Surgery 1993;0(01):-
Objective To investigate the expression of c-Jun N-terminal kinase (JNK) and p38MAPK in autogenous vein graft during vascular remodeling. Methods Autogenous vein graft model was established in 80 Wistar rats. Vein graft samples were harvested at 6th hour, day 1, day 3, day 7, day 14, day 28, day 42 and day 56. Gene expression of JNK and p38MAPK were measured by reverse transcription-PCR and in situ hybridization. Western blot and immunohistochemistry were used to detect the protein expression and phosphorylation of JNK and p38 MAPK. Apoptosis of VSMCs was studied by TUNEL. Results The expression of JNK mRNA and p38 mRNA reached the highest level on the second week (26?10)% and (59?26)% respectively, P
6.Effect of survivin antisense oligodeoxynucleotide on intimal hyperplasia of vein graft
Jun YANG ; Xinhua HU ; Chengwei LIU ; Zhishen ZHANG ; Qiang ZHANG
Chinese Journal of General Surgery 1993;0(01):-
Objective To investigate the effect of survivin antisense oligodeoxynucleotides(ASODN) on(intimal) hyperplasia(IH) in vein graft in rats.Methods Autogenous vein graft model was established in 60 Wistar rats by transplanting the interior jugular vein to common jugular artery using microsurgical technique.The rats were divided into 5 groups according to different processing methods,including survivin ASODN 50?g and 200?g,scramble ODN 200?g,control group and lipoectin+pluronic group.Vein graft samples were harvested at 1 or 2 weeks after surgery and histomorphologic methods were used to compare the degree of IH.Survivin mRNA was measured by RT-PCR.Western blotting and immunohistochemistry methods also were used to detect the expression of survivin and PCNA.Apoptosis of VSMC was dectected by TUNEL.Results IH was evident within 1 to 2 weeks after vein grafting,but was markedly inhibited by 50?g of survivin ASODN(P
7.Protective effect of paeonol on human umbilical vein endothelial cells injured by hyperlipidemic serum
Chengwei NIU ; Xiaohui ZHOU ; Jinhuan ZHANG ; Qian XU ; Kai CAO
Chinese Journal of Pharmacology and Toxicology 2011;25(5):413-418
OBJECTIVETo investigate protective effect of paeonol (Pae) on human umbilical vein endothelial cells (HUVECs)injured by hyperlipidemic serum and explore its possible mechanism.METHODS The injury model was induced by 20% hyperlipidemic serum incubating HUVECs for 24 h.Pae 124,247 and 495.μmol· L-1 were given followed by administration of hyperlipidemic serum for 24 h.The morphological changes were observed under inverted microscope,cell survival rate was evaluated by MTT method,the nitric oxide (NO) content was measured by nitric acid reductase method and the endothelial nitric oxide synthase (eNOS) mRNA expression was determined by RT-PCR.RESULTSCompared with normal contorl group,most cells in model group split and exfoliated.However,the morphology was tending to normal level after intervention with Pae.Pae significantly improved cell viability(P <0.01).Compared with model group,the survival rate increased from (53.0 ±10.1 ) % to ( 68.4 ± 9.1 ) %,( 84.5 ± 6.7 ) % and (98.1 ± 7.5 ) %,respectively.The NO content and eNOS mRNA expression both increased greatly in Pae groups(P < 0.01 ).Compared with model group,content of NO increased from 54 ± 4 to 79 ± 6,115 ± 5 and ( 136 ± 6) μmol · L- 1,respectively.The expression level of eNOSmRNA improved from 0.215 ± 0.060 to 0.451 ± 0.045,0.563 ± 0.013,0.704 ± 0.068,respectively.CONCLUSIONPae exerts protective effect on HUVECs injured by hyperlipidemic serum by increasing eNOS mRNA expression,which might therefore improve the content of NO.
8.Analysis on the Utilization of Drug Included in the Army Rational Medicine Directory in a Military Sanatorium in 2009
Shuguang GONG ; Chengwei ZHANG ; Yifeng SUN ; Fangfang LU
China Pharmacy 2001;0(08):-
OBJECTIVE:To analyze the utilization of drug included in the army of rational medicine directory in a military sanatorium in 2009.METHODS:To extrac convalescent medication data from a military sanatorium "military sanatorium information system",and analyze the drug use situation.RESULTS:The first 6-bit key role of drug consumption was the circulatory system drugs,anti-microbial drugs,a major role in the central nervous system drugs,clinical subjects medication,a major role in the respiratory system drugs,a major role in the digestive system drugs.CONCLUSION:The drug use of the military sanatorium for the convalecents basically matches the spectrum of convalecent disease.
9.Role of calcium ion in the cyotoxicity and DNA fragment induction in HL-60 cells by 6F isolated from Pteris semipinnata L.
Chengwei HE ; Nianci LIANG ; Lier MO ; Jinhua LI ; Xia ZHANG
Chinese Journal of Pathophysiology 1999;0(09):-
AIM: To investigate the changes of cytosolic free calcium concentration ([Ca 2+ ] i) and expression of Bcl-2 in HL-60 cells treated by 6F isolated from Pteris semipinnata L. (PSL), and to discuss the relations between calcium ion and cytotoxicity and DNA fragment induction effects of 6F. METHODS: HL-60 cells were used as in vitro model. [Ca 2+ ] i was measured on fluorescent spectrophotometry using Fura-2/AM as Ca 2+ indicator. Bcl-2 expressing level was measured by flow cytometry. Tetrazolium salt (MTT) and diphenylamine staining methods were applied for cytotoxicity assay and DNA fragmentation detection, respectively. RESULTS: [Ca 2+ ] i increased obviously in a dose and time dependent manner after treated HL-60 cells with 6F. 6F decreased the expressing level of Bcl-2. Adding 2 mmol/L Ca 2+ to the medium, or 1 mmol/L EDTA to chelate Ca 2+ , or 4 ?mol/L calcium ionophore A 23187 to increase the concentration of cytosolic Ca 2+ , the DNA fragment induction by 6F was not affected, whereas the cytotoxicity of 6F was enhanced. 250 ?mol/L Zn 2+ attenuated the DNA fragment induction, and the cytotoxicity of 6F against HL-60 cells was enhanced significantly. CONCLUSION: It was speculated that the decreased expressing of Bcl-2 by compound 6F was related to increased [Ca 2+ ] i in HL-60 cells, and DNA fragment induction was possibly catalyzed by Ca 2+ - independent DNase.
10.Design and Implementation of Mobile Nursing Station
Hui ZHANG ; Yali JI ; Chengwei HU ; Xinying LIU
Chinese Medical Equipment Journal 1989;0(02):-
Objective To solve the problem that traditional electronic medical records(EMR) system could not be extended to patients' bedside because of the wired network connection restrictions.Methods Based on wireless transmission and data synchronization technologies in PDA,a mobile nursing station was developed.Results Such functions were realized as patient identity verification,implementation of doctor's orders and vital signs collection beside patients' bed.Conclusion Technical support is provided for closing EMR information chain and improving medical quality.[Chinese Medical Equipment Journal,2008,29(2):53-54]