Objective To discuss the influence and curative effect observation of inhalation of formoterol/budesonide on matrix metalloproteinase of plasma(MMP)-2 and 9 for asthmatic patients (AAPs).Methods According to the digital table,68 cases of AAPs in acute stage of attack were randomly divided into observation group and control group.The patients in two groups were given routine medical treatments like anti-infection,antispasmodic and relieving asthma,relieving coμgh and reducing sputum and etc.In addition,the patients in observation group were given the inhalation of formoterol/budesonide with 4.5μg/160μg,two times daily for 2 weeks.Except for formoterol/budesonide,the medical treatments given to patients in control group were the same with those in observation group.The changes of MMP-2 and 9 levels in blood serum before and after 2 weeks' medical treatment were observed and compared,and proceed with the curative and safety observation.Results After 2 weeks' medical treatment,the MMP-2 and 9 in blood serum both were declined sharply(t =2.87,2.97,2.21,2.31,P ＜ 0.01 or P ＜ 0.05),and the compared with control group,the decrease value(t =2.45,2.37,all P ＜ 0.05) was obviously higher.Meanwhile,the total clinical effective rate in observation group (94.12％) was obviously higher than that in control group (70.59％)(x2 =6.48,P ＜ 0.05) ; The numbers of untoward effect occurrence in the medical treatment period were 3 cases in control group and 5 cases in observation group,which both had light symptom and did not appeared serious untoward effects.The comparison result of untoward effect between two groups had no obvious statistical difference(x2 =0.14,P ＞ 0.05).Conclusion formoterol/budesonide has reliable medical treatment effect and high security to asthmatic,whose mechanism of action has effect on MMP-2 and 9 level adjustment,correction of degradation of extracellular matrix and dysequilibrium,and chronic airway inhibition and remodeling.

AIM:To study the expressing variation of TNF-? and IFN-? mRNA in mouse splenocytes induced by H22 tumor cells derived heat shock protein gp96-peptide complexes in vitro,and to observe the morphologic change of H22 tumor cells which treated with the culture supernatant.METHODS:H22 tumor cells derived HSP gp96 was obtained by the techniques for protein extraction and purification and was identified by Western blotting method.The expression values of TNF-? and IFN-? mRNA in spleen lymphocytes were detected by semi-quantitative RT-PCR.The morphologic changes of H22 tumor cells induced by the culture supernatant were observed by laser scanning confocal microscopy(LSCM)and transmission electron microscope(TEM).RESULTS:Purified heat shock protein gp96 was identified by Western blotting.The expression value of TNF-? and IFN-? mRNA in activated spleen lymphocytes induced by gp96-peptide complexes was higher than that in control groups(P

Objective:Now the mechanical ventilation has become the essential emergency or therapy equipment in the all sizes of hospitals. However with the widely application of ventilators, they are still the kind of high risk of medical instruments. In order to reduce various equipment failures, an overall management strategy based on traceability of two-dimension code is constructed in this article, which will provide a new direction for medical equipment management.Methods: Using the popular application of WiFi network and creating the only identified two-dimension code, the overall management strategy is established for the ventilators.Results: The centralized and decentralized management model is adopted in the preservation of ventilators. And all the operators of ventilators will be supported technology service about equipment failures and setting parameters by the respiratory department and engineering department. In addition to this, the two departments should organize the staff to learn the operation of ventilators in the hospital. All of those compose the structure of overall management.Conclusion: With the management of this method, the efficiency of ventilators is improved, and the rate of machine failures is dropped. The difficulty about technology service caused by space can be solved in time. Finally, the professional ability of the staff in hospital will be improved with the communication among the different departments.

Objective:Mechanical ventilation has been the regular equipment or the therapy equipment in the hospital. In order to establish a safe condition of using ventilator, not only standard operations are required, but also high quality of ventilators should be ensured. This article will introduce a kind of ventilator detection system made in Switzerland, especially the portable device which supports the technology to detect ventilator at any time and every place. These detection equipments provide the protection of high risk medical equipment. Methods: According to the requirement of mechanical ventilation detection and the instruction of imtmedical ventilator detection system, the application methods of imtmedical detection system were introduced. Results: Compared the difference with other ventilator detectors, the priority, portability, stability and accuracy of the Citrex H4 detection were understood. Conclusion:The Citrex H4 ventilator detector is satisfactory for quality testing of ventilator, ion evaluate can make the output performance parameters more accurate and the quality higher.of the ventilators.

OBJECTIVE To investigate the expiry date of sterile articles packed by 4 different materials and preserved in different conditions after pressure steam sterilizing. METHODS The bacteria growth of the materials sterilized by pressure steam sterilizing method and stored in the supply department,treatment room,dressing room,nursing cabinet and ambulance vehicle was observed. RESULTS The axenic periods of the sterile materials in the supply department preserved by methods A,B,C,D were 14 days,14 days,7 months and 8 months,respectively in summer;while the sterile periods of the materials in the treatment room,dressing room,nursing cabinet and ambulance vehicle preserved by methods A,B,C,D were 11 days,11days,6 months and 7 months,respectively. CONCLUSIONS Management of expiry date of sterile materials is an important measure to guarantee safe use of sterile materials and prevent against nosocomial infection.

Objective:To explore the availability for tumor-derived gp96 to induce specific CTL activity of splenocytes in vitro.Methods:gp96 purified by the techniques for protein extraction and identified by SDS-PAGE gel electrophoresis and Western blot method; CD8+T cell induced by gp96 and CTL activity detected by flow cytometry, immunofluorescence technic and CCK-8 assay.Results:gp96 was identified by SDS-PAGE and Western blot; Analysis with FCM showed that the number of CD8+T cells(nearly 70%) was obviously increased after pulsed with gp96-peptide complexes as compared with that of control groups(35%,26%, P

Objective:To evaluate the potential value of indocyanine green combined with methylene blue and methylene blue alone in the detection of sentinel lymph nodes (SLN) in breast cancer.Methods:The clinical data of 118 patients with early breast cancer from November 2016 to October 2018 in Dalian Central Hospital Affiliated to Dalian Medical University were retrospectively analyzed. Among them, 62 patients underwent SLN biopsy under methylene blue (methylene blue group, 160 SLN), and 56 patients underwent SLN biopsy under indocyanine green combined with methylene blue (combined group, 190 SLN). After SLN biopsy, patients underwent grade Ⅰ and Ⅱ axillary lymph node dissection.Results:There was no significant difference in the positive lymph node rate and accuracy rate between 2 groups ( P>0.05); the SLN dyeing rate and SLN biopsy positive rate in combined group were significantly higher than those in methylene blue group: 97.9% (186/190) vs. 93.1% (149/160) and 28.4% (54/190) vs. 18.1% (29/160), and there were statistical differences ( P<0.05); the false negative rate in combined group was lower than that in methylene blue group: 5.3% (3/57) vs. 14.7% (5/34), but there was no statistical difference ( P>0.05). Conclusions:In breast cancer patients, the dual -tracing method of indocyanine green combined with methylene blue is better than using methylene blue alone in identifying SLN and predicting the status of axillary lymph nodes, and it has a tendency to reduce the false negative rate.

Objective To analyze the immunogenomic characteristics of antibody repertoire in re-sponse to influenza vaccine in order to provide a theoretical basis for further development of antibody. Meth-ods Based on a time-series immunoglobulin heavy chain ( IGH) repertoire sequencing dataset, we analyzed the immunogenomic characteristics of antibody repertoire in response to trivalent influenza vaccine ( TIV ) from three aspects which included the features in complementarity-determining region 3 ( CDR3 ) , antibody mutation and VDJ usage. Results The frequency of antibody mutation increased significantly upon vaccina-tion. Analysis of the CDR3 region indicated that polar and aromatic amino acids had a higher preference. The length of CDR3 region in naive B cells followed a normal distribution, while specific CDR3 sequences with 15 to 18 amino acids in length occupied a dominant position after vaccination. In addition, the VDJ us-age altered obviously and IGHV3-7-derived antibody had a significant response to the vaccine. Response in-tensity reached the peak on day 7 and gradually weakened over time. Conclusion Antibody repertoire evolves dynamically to express specific antibody upon vaccination and the characteristics of immune responses at sequence level could be used to evaluate their effectiveness.

This paper mainly studies the driving system of centrifugal blood pump for extracorporeal circulation, with the core being disc magnetic coupling. Structure parameters of disc magnetic coupling are related to the ability of transferring magnetic torque. Therefore, it is necessary to carry out disc magnetic coupling permanent magnet pole number (n), air gap length (L(g)), permanent magnet thickness (L(m)), permanent magnet body inside diameter (R(i)) and outside diameter (R(o)), etc. thoroughly. This paper adopts the three-dimensional static magnetic field edge element method of Ansys for numerical calculation, and analyses the relations of magnetic coupling each parameter to transmission magnetic torque. It provides a good theory basis and calculation method for further optimization of the disc magnetic coupling.
Extracorporeal Circulation ; Magnetic Fields ; Magnetics ; Torque

Objective To investigate the information management method for improving the efficiency of rescuing batches of the sick and wounded.Methods A portable palm computer were used to collect the information of the sick and wounded and the collected data were transmitted in real time to the server of the higher rescuing institution in the hospital via wired and wireless networks after being counted up,analyzed and summarized.Results The higher rescuing institution took the real-time information as the decision-making base at any time to give orders and provide assistance that fed back to the rescuing site at any moment.Conclusions The system combines medical rescuing with modern computerized information system,realizing the informatization,digitalization and automation of direction and management models in rescuing batches of the sick and wounded and greatly improving the efficiency for rescuing the sick and wounded.