1.Simulation exercise test and its use in clinical laboratory quality management
Chinese Journal of Hospital Administration 2015;(5):386-387
Introduction to the content design, selection and implementation method of the simulation exercise test method for work quality of clinical laboratories,and a comparison with traditional control method.It is held that the method is advantageous in artificial impact factors as necessary and whole-process tracing,and it tests not only the outcomes,but also all steps in the workflow,and can avoid man-made interference.
2.A BA-ELISA-Spot assay for the detection and enumeration of speifc antibody seretng cells
Chinese Journal of Immunology 1985;0(03):-
A new solid-phase BA-ELISA-spot assay is described for detection and enumera-tion of antigen specific antibody secreting cells.Spleen cells from immunized mice areincubated in plstic wells precoated with specific an tigen.After removal of the cells,immobilized antibodies at the point of release from single cell are demonstrated bymeans of an immunenzyme procedure in which.enzyme-substrate(HRP-TMB)reactionsare performed.Blue spots are thus produced and counted with naked eye.
3.NLRP1 expression and its correlation with the severity of septic patients in the early stage
Zhaojun LIU ; Jialin LIU ; Hongping QU
Chinese Journal of Emergency Medicine 2012;21(4):366-370
Objective To explore the mRNA expressions of NLRP1 (NOD-like receptor 1 ) and NLRP3 inflammasomescomponents and related pro-inflammation cytokines in peripheral blood mononuclear cells (PBMCs).Methods A total of 21 septic patients,20 non-infectious SIRS patients and 20 health subjects were enrolled in this study.The mRNA expressions of inflammasomes components and related proinflammation cytokines were measured by using RT-PCR,and serum levels of IL-1β and IL-18 were measured using ELISA.One-way ANOVA was usedd to compare the data of all three groups,and SNK-q was employed to compare thedata among different groups.Spearman correlation analysis was used to analyze the correlation between these biomarkers and the severity of septic patients.Results ①The mRNA expression of NLRP1 in PBMCs of septic patients in early stage and non-infectious SIRS patients was down-regulated in comparison with healthy subjects (P <0.01 ).The expression of NLRP3 in septic patients was not differentfrom that in healthy subjects ( P > 0.05 ),but NLRP3 mRNA expression in non-infectious SIRS patients was significantly higher than that in septic patients and in healthy subjects ( P < 0.01 ).ASC ( apoptosis associated speck like protein containing a CARD) and caspase-1 mRNA expressions in septic patients and non-infectious SIRS patients were higher than those in healthy subjects ( P < 0.01 ).There was no difference in level of IL-1β found among all groups.IL-18 mRNA expression in septic patients and non-infectious SIRS patients was higher than that in healthy subjects ( P < 0.01 ),and that in non-infectious SIRS patients was highest.②)Serum protein level of IL-1β in septic patients was lower than that in healthy subjects (P <0.05 ),and serum level of IL-18 in septic patients was significantly higher than that in non-infectious SIRS patients and in healthy subjects ( P < 0.01 ).③NLRP1 was negatively related to SOFA ( sepsis-related organ failure assessment) score (r =-0.44,P < 0.05 ) and negatively related to APACHE Ⅱ score as well ( r =- 0.52,P < 0.05 ).Conclusions NLRP1 mRNA expression was down regulated in patients with early sepsis and its expression was negatively correlated to the severity of septic patients,indicating the lower NLRP1 mRNA expression the severer illness.
4.Reflection on participating in continuing education of international disease coding and surgical classification
Shengli LI ; Zhaojun LU ; Ying LIU
Chinese Journal of Medical Education Research 2014;13(10):1077-1080
Correctly grasping the International Classification of Diseases ICD-10 and surgical classification ICD-9-CM-3 encoding method to improve coding accuracy and professional level is increasingly important to the current hospital information management.Through systematic continuing education training,the relevant personnel should be familiar with ICD-10 and ICD-9-CM-3 encoding rules,and continue to accumulate the appropriate clinical knowledge to improve their own coding levels.Coders should be a basis,six fits,that is based on the international classification of diseases and operation classification coding rules,coders should rcad more medical records,have more communication with clinicians,understand clinical medical knowledge,do more book search query for [CD code,sum up coding experience and multiply track the latest development of medicine and ICD coding.
5.Application and development of point-of-care testing in domain of tumor markers
Lahong ZHANG ; Yuhua LIU ; Zhaojun CHEN
Chinese Journal of Laboratory Medicine 2014;(11):808-811
Malignant tumors are the most common lethal diseases in China.Because of complexity of etiology and pathogenesis , and the lack of specific markers for early diagnosis , delayed diagnosis and treatment of cancer , the fatality rate is high.With the development of basic research , more and more early specific markers were found , but the current detection mostly depend on the professional laboratories , time-consuming , high price and have a number of inconveniences to patients on time and money.Meanwhile , it′s difficult to extend to zoon of medicine resources deficient.Recently, point-of-care testing (POCT) has been rapidly developed , because of its portability , getting results quickly , can be operated in basic medical units and economic backward areas , so it′s benefit to cancer screening in human.By the application in tumor markers, POCT can be done for the cancer early detection , early diagnosis and early treatment , so then cuts the death rate.
6.Lymphocyte apoptosis induced by sulfur mustard in rat spleen
Yan SAI ; Yong LIU ; Zhaojun DONG
Medical Journal of Chinese People's Liberation Army 2001;0(08):-
Objective To investigate the apoptotic effect induced by sulfur mustard on the lymphocytes of the rat spleen,and define the role of caspase-3 during the process.Methods Sulfur mustard was given by intraperitoneal injection in a dose of 3.5mg/kg.The animals were anesthetized and the spleens were harvested at different timepoints after intoxication.The histopathogy of spleen was studied with hematoxylin-eosin staining.Caspase-3 mRNA was detected with RT-PCR.Protein expression of caspase-3 was assayed with Western blotting,lymphocytes of rat spleen were isolated and cultured in vitro and they were challenged with sulfur mustard(100?mol/L).The effect of Ac-DEVD-CHO(a specific inhibitor of caspase-3)on sulfur mustard-induced apoptosis of the lymphocytes cultured in vitro was evaluated.Fluorescent probe labeled with Rhodamine 123 was used to study mitochondrial potential.Results The histology of rat spleen was affected after sulfur mustard intoxication,as evidenced by apoptosis of a part of lymphocytes.Protein and mRNA expressions of caspase-3 were increased significantly in the spleens of intoxicated rats as compared with that in control group.DNA ladder and 'sub-G1' peak of lymphocytes which were treated with sulfur mustard in vitro were partially improved by Ac-DEVD-CHO(the specific inhibitor of caspase-3).In addition,mitochondrial potential decreased in a time-dependent manner in the lymphocytes intoxicated by sulfur mustard in vitro compared with that in the control group.Conclusions The spleen is injured in the rat which is intoxicated by sulfur mustard.Lymphocyte apoptosis is one of the mechanisms splenic injury.Caspase-3 may be involved in the process of lymphocyte apoptosis induced by sulfur mustard.
7.Toxic effects of Rotenone on glutamate transporter and glutamine synthetase in rat brain
Hui LIU ; Yunpeng LI ; Zhaojun DONG
Journal of Third Military Medical University 2003;0(09):-
Objective To study the toxic effects of Rotenone on glutamate transporter and glutamine synthetase in rat brain.Methods The glutamate levels in the striatum of SD rats were detected by high performance liquid chromatography(HPLC),the expression of glutamate tansporter mRNA and proteins were detected by RT-PCR and Western blotting and the activity of glutamine synthetase was determined by using GS detect kit.Results Rotenone was shown to increase the release of glutamate in rat striatum,the expression of glutamate/aspartate transporter(GLAST)mRNA and protein decreased significantly in 0.6 mg/kg and 1.2 mg/kg Rotenone intoxicated groups,but the expression of GLT-1 and the activity of GS enhanced obviously.Conclusion Down-regulation of GLAST may be responsible for increased Glu level in rat brain induced by Rotenone,but the increased expression of GLT-1 and GS activity may represent a protective mechanism of the brain cells by limiting the neurotoxicity of Glu.
8.Cytotoxic action of sulfur mustard on cultured lymphocytes and their caspase-3 expression
Yan SAI ; Yong LIU ; Mingxue ZHU ; Liming ZHANG ; Zhaojun DONG ;
Journal of Third Military Medical University 2003;0(13):-
Objective To investigate the manner and molecular mechanism of lymphocyte cytotoxic action induced by sulfur mustard. Methods Lymphocytes were separated from the spleen of Wistar rats and were cultured. DNA strand breaks were detected by fluorospectrophotometry. RT PCR and Western blotting were employed to detect the gene and protein expressions of caspase 3 and its activation. Results Sulfur mustard induced DNA strand breaks in the lymphocytes. Gene and protein expressions of caspase 3 were increased in a time dependent manner. Conclusion Sulfur mustard induces lymphocyte cytotoxic action by means of depending on the expression and activation of caspase 3.
9.Interventional effect of tetrapeptide on sulfur mustard-induced lymphocyte apoptosis
Yan SAI ; Yong LIU ; Mingxue ZHU ; Liming ZHANG ; Zhaojun DONG ;
Journal of Third Military Medical University 2003;0(14):-
Objective To investigate the changes of caspase 3 activity and the interventional effect of tetrapeptide AC DEVD CHO on sulfur mustard induced apoptosis of lymphocyte. Methods The activity of caspase 3 was detected by fluorospectrophotometry. DNA ladder and apoptosis were detected by DNA agarose gel electrophoresis and flow cytometry. Results Sulfur mustard enhanced the activity of caspase 3 and its polypeptide inhibitor (AC DEVD CHO) partially blocked apoptosis, which was mainly presented as an obscure phenomenon of DNA ladder and a decrease in percentage of apoptosis. Conclusion Sulfur mustard can induce the apoptosis of lymphocyte by means of activating caspase 3. The inhibitor may have an interventional effect on lymphocyte apoptosis induced by sulfur mustard.
10.Investigation on the necessity of development of information system integration platform in county hospital
Zhaojun CHEN ; Laizheng CAO ; Chengxing HAN ; Ning LIU ; Guohua QIU
Chinese Journal of Primary Medicine and Pharmacy 2017;24(2):316-317,318
Objective To evaluate the necessity of construction of hospital information system integration platform for county Hospital as the urban and rural medical hub in the context of the development of modern medical information.Methods By referring to the development of the domestic and international integration platform,and comprehensively considered the development status of the county hospital,and analyzed based on the perspective of sustainable development.Results The hospital information integration platform was formed to meet the needs of the county hospital,and it platform was used to open up the internal and external medical information resources,realize the integration of business resources and process optimization..Conclusion The county hospital building information system integration platform is the inevitable trend of the current construction of information technology,and its comple-ted construction can enhance province -city-county tertiary care facility data communication,reduce the coupling within the hospital business systems,and make the county hospital more flexible in the future construction and devel-opment.