1.Application of Information Technology at Army Telemedicine Activity
Chinese Medical Equipment Journal 2004;0(09):-
The article introduces the current development situation of telemedicine,and the situation for system construction of satellite communications system,and explains the important function about modern corresponding technology and computer in telemedicine. It also puts forward the develop trend and study direction in army telemedicine in the future.
2.Study on Information Resource Platform for Education of Medical Non-commissioned Officers
Changfa WANG ; Yan WANG ; Jianjun LU
Chinese Medical Equipment Journal 2003;0(12):-
Objective To set up an information platform applicable to medical non-commissioned officers (NCOs) so as to integrate,multiply and share teaching resources,and optimize and improve training abilities.Methods The downstage application and backstage management were realized by ASP and WEB database program,as well as by dynamic renewal of web pages via backstage adjustment.Results Based on local area network,an information platform applicable to medical NCOs' education was set up,on which the goals,including digitization of textbooks,integration of courseware,standardization of picture and word materials,automatic formation of teaching plans,and upload,download and broadcast of courses,were reached.Conclusion The educative digitization can be realized for medical NCOs by means of computerized network,database and multimedia techniques,which helps to push forward the innovation of educative modes and approaches.
3.Application Study on Teaching and Training Approaches to Electrocardiogram Monitoring
Changfa WANG ; Jianjun LU ; Qingchun JI
Chinese Medical Equipment Journal 2003;0(11):-
Objective To explore the highly effective teaching and training approaches to electrocardiogram (ECG) monitoring. Methods Using computer simulation and digital programming, ECG data-gathering platform was set up. Results Not only ECG data were gathered and stored automatically in real time, but its dynamic databases including examination database were established as well. Therefore the teaching and training approaches to ECG monitoring achieved digitization with network and multimedia. Conclusion On the basis of new computer techniques, the application study on teaching and training approaches to ECG monitoring helps to the organic integration of teaching, scientific research and clinical practice, and also helps to the improvement in the training level or quality.
4.Recovery Project of Computer Network Malfunction System under Unexpected Circumstances
Changfa ZHU ; Fenfen WANG ; Huifei LE ; Ya LIN ; Yueling YIN
Chinese Medical Equipment Journal 1993;0(06):-
Objective To develop a system failure recovery programs in order to prevent an accident of the hospital computer network system. Methods The network failure was divided into three grades according to its influence. The groups of network malfunction was set up and can immediately start the established program, take effective measures to prevent the situation expand and spread in the event of unforeseen circumstances. Results Through the emergency power supply program, the network route emergency program, cable emergency support program and sector emergency plan, the hospital information systems run normally. Conclusion The issue of large-area network information paralysis is effectively solved and improves the information technology capacity of the hospital.
5.Expression profile of long non-coding RNA in non-alcoholic fatty liver disease
Chuanzheng SUN ; Feizhou HUANG ; Wenguang YAN ; Huaizheng LIU ; Changfa WANG
Journal of Central South University(Medical Sciences) 2017;42(7):741-748
Objective:To analyze the characteristics of long non-coding RNA (lncRNA) expression in nonalcoholic fatty liver disease (NAFLD).Methods:lncRNA-mRNA microarray was conducted on the liver tissue samples from 10 patients with simple gallbladder stone (5 NAFLD liver samples and 5 normal liver samples),and the differentially expressed lncRNA was analyzed by bioinformatics technology.Results:Compared with the normal liver samples,there were abnormal expression of 1 735 lncRNAs and 1 485 mRNAs in NAFLD liver samples.Among them,535 lncRNAs and 760 mRNAs were up-regulated,1 200 lncRNAs and 725 mRNAs were down-regulated.Conclusion:Compared with normal liver,the expression oflncRNA in NAFLD tissues is obviously abnormal.These lncRNAs may play an important role in the occurrence and development of NAFLD.
6.Characterization and Investigation of Staphylococcus aureus zfb Isolates from Bovine Mastitis
Na HE ; Changfa WANG ; Hongjun YANG ; Hongbin HE ; Shaohua YANG ; Liqun WANG ; Yundong GAO ; Jifeng ZHONG
Microbiology 2008;0(08):-
A Staphylococcus aureus strain, designated zfb, was isolated from a clinical bovine mastitis case of a dairy cow. Staphylococcus aureus zfb can have resistance to methicillin and no lipase contrast by ATCC 25923. The production of the capsule was assessed by the diffuse colonial morphology in serumsoft agar. A mouse infection model was used to determine the LD50 and the invasiveness of SA zfb. The LD50 of SA 25923 to experimental mice was 10-2.5/mL, and the LD50 of SA zfb to experimental mice was 10-4.33/mL. The purpose to detect characteristics of SA zfb makes it an interesting candidate for the preparation and assay of an avirulent mutants against staphylococcal infections and further investigate on pathogenic mechanism.
7.Clinical Study onQishen Erlian Decoction Combined with Entecavir for Patients with Liver Fibrosis of Hepatitis B
Xingxing YUAN ; Bingyu WANG ; Lei YANG ; Lei GUO ; Changfa LIU ; Yali ZHANG
Chinese Journal of Information on Traditional Chinese Medicine 2016;23(11):29-33
Objective To observe the clinical efficacy ofQishen Erlian Decoction combined with entecavir for patients with liver fibrosis of hepatitis B.MethodsTotally 74 patients were divided into treatment group (38 cases) and control group (36 cases). The control group was given entecavir, while treatment group was given Qishen Erlian Decoction combined with entecavir, 48 weeks for 1 course. Entecavir was given to both groups after treatment, and two groups were followed up for 24 weeks. The liver function, DNA-HBV, serum TGF-β1, BMP-7, liver fibrosis indexes and clinical symptom changes of the two groups were observed.Results 3 cases were excluded and 3 cases were lost during follow-up in treatment group; 6 cases were lost during follow-up in the control group. Liver function and HBV-DNA in 12, 24, 36, 48 weeks and 24 weeks in follow-up were significantly lower than those pre-treatment (P<0.01) in the treatment group, and were significantly better than those in the control group (P<0.01). TGF-β1 decreased (P<0.05), BMP-7 increased (P<0.01), and the ratio of TGF-β1/BMP-7 decreased (P<0.01) in both groups after treatment. There was significant difference between the two groups (P<0.05). HA, LN, PCⅢ,Ⅳ-C, and FS decreased significantly in treatment group after treatment and in the follow-up (P<0.01), fatigue, discomfort in liver region, disgust oil and anorexia were improved (P<0.05), the difference was significant compared with control group (P<0.05).Conclusion Qishen Erlian Decoction combined with entecavir can not only protect liver and reduce aminotransferase, but also be antiviral and reverse liver fibrosis.
8.Success of surgical ablation of atrial fibrillation using biopolar radiofrequency device
Changfa GUO ; Chunsheng WANG ; Wenjun DING ; Dong ZHAO ; Demin XU ; Hao LAI ; Shouguo YANG
Chinese Journal of Thoracic and Cardiovascular Surgery 2011;27(12):727-730
Objective We sought to evaluate the efficacy of bipolar radiofrequency ablation of atrial fibrillation (AF) in patients undergoing cardiac surgery,and to determine independent factors affecting the recurrence.Methods From June 2007 through February 2010,81 patients with atrial fibrillation underwent a modified Cox-Maze Ⅳ procedure using a biopolar radiofrequency device( Medtronic in 32 cases,Atricure in 49 cases).There were 45 males and 36 females,aged (48.2 ± 11.0)years,including 26 cases of permanent AF,44 cases of persistent AF and 11 cases of paroxysmal AF.The mean duration time of AF was (7.56 ± 7.47 ) years.The left atrial diameter were 36 ~ 72 mm.In conjunction with cardiac surgery including:mitral valve replacement (MVR) (or add tricuspid valve plasty (TVP) in 33 cases,mitral and aortic valve replacement (DVR)( or add TVP) in 18 cases,off-pump coronary artery bypass surgery (OPCAB) in 16 cases,aortic valve replacement (AVR) in 4 cases,MVR and coronary artery bypass grafting (CABG) in 1 case,mitral valve plasty (MVP) in 1 case,and others in 8 cases.Among them,22 patients were undergoing electrophysiological mapping by high-frequency bipolar stimulation from June 2009 to February 2010.A follow-up of 12 to 44 months was completed.Recurrences were evaluated by 12-lead ECG or 24 hour Holter recording every clinic visit-1,3,6,9,and 12 months after the procedure and yearly thereafter,or if symptoms developed.Multivariate regression analysis was performed to determine independent factors affecting the recurrence.Results Hospital mortality was 1.23%.The successful ablation of AF were 100%,82.5%,and 84.8% immediately after operation,at discharge,and at 2(6.1 ± 13.6) months after operation respectively.Multinomial regression analysis showed small left atrium ( < 60 mm),and electrophysiological mapping might contribute better sinus rhythm restoration ( P < 0.05 ).Conclusion Bipolar radiofrequency ablation of atrial fibrillation in patients undergoing cardiac surgery is safe and effective.Small left atrium ( < 60mm) and electrophysiological mapping should be considered to improve results in selected patients.
9.Comparison of three methods for total DNA extraction from mouse models
Susu LIU ; Qin ZUO ; Shuya ZHOU ; Chenfei WANG ; Zhengming HE ; Baowen LI ; Changfa FAN
Chinese Journal of Comparative Medicine 2014;(7):45-50
Objective To establish a simple , fast and economic total DNA extraction method to serve the rapid identification of model mouse genotype in large number of mice .Methods Three methods, i.e.phenol extraction, isopropyl alcohol precipitation and mouse ear boiling methods were used to extract the total DNA from ten C 57-rasmodel mice.The purity and yield of DNA obtained by the three methods were compared , and polymerase chain reaction ( PCR) assay was used to compare the efficacy of the three extraction methods .Results Among the three methods , phenol extraction was the best and isopropyl alcohol precipitation was the poorest in DNA yield .In terms of DNA purity , the phenol extraction was the best and the mouse ear boiling method was the poorest .All the three methods could be used to extract the total DNA from mice serving as template of PCR reaction for the mouse genotype identification .The time consumption of three methods are 12.5 hr ,13 hr and 0.18 hr.Mouse ear boiling method was significantly lower than that of the other two methods ( P <0.01 ) ,.The obtained total DNA can be stored at conventional -20℃for 7 days and 30 days later still can be used as a template for PCR reaction .Conclusions Among the three methods studied , the mouse ear boiling method is simple and with the lowest cost , so it is feasible for total DNA extraction in scaled genotyping experiments .
10.Evaluation of the Immunity Effectiveness on the Engineered Subunit Vaccine of Staphylococcus aureus ?-Hemolysin
Haiyan ZHANG ; Hongjun YANG ; Changfa WANG ; Hongbin HE ; Jifeng ZHONG ; Shaohua YANG ; Weiming MA
China Biotechnology 2006;0(11):-
Objective:? -Hemolysin of Staphylococcus aureus,which was expressed in E.coli BL21(DE3) with recombinant pET32a+-?-HL plasmid,was purified with gel filtration chromatography(GFC),and then the engineered subunit vaccine was developed. The immunity effectiveness of this vaccine was evaluated on mouse models.Method:The purified fusion protein was analyzed in SDS-PAGE,and subjected to the evaluation of its median hemolytic dose potency(HD50) was finally analyzed with rabbit erythrocyte. Protein concentration was determined by the method of Bradford. Antibody titers were evaluated on ELISA,and then challenged to gain the immunity protect index.Results:There is an expected protein band with molecular mass of 53kDa in SDS-PAGE,and the concentration is 0.1278mg/ml. The hemolysis activity is 8012.5 HU/mg. There are specific antibodies acquired in blood-serum from mice after vaccined and the antibody titers rising until it has arrive the max,then following down.Conclusion:The purified fusion protein has good fineness and hemolysis activity,the antibody titers initiated by the protein vaccine go with regulation and the immunoprotection is satisfied.