2.Problems and Countermeasures of Non-medical Safety Management in the Hospital in China
Chinese Hospital Management 2017;37(9):67-69
Medical safety management and non-medical safety management are two major systems of hospital safety management.With the deepening of the medical and health system reform and the change of the mode of medical treatment,the connotation and extension of non medical safety management have changed,and the non-medical safety management field is faced with more risk factors and security risks.Combined with the.status quo of non medical safety management in hospital,the problems existing in non-medical safety management are analyzed and some suggestions for improvement are put forward.
3.Mast cells and cardiovascular disease.
Chinese Journal of Pediatrics 2010;48(10):794-797
4.MeaSurement of Relative Affinity and Specificity of Monoclonal Antibodies
Chun-Hai HAO ; Yuan-Yao CHEN ;
Chinese Journal of Immunology 1985;0(05):-
To measure the relative affinity and type Specificity of neutralizing monoclonal antibodies against the hexon antigen of adenovirus type 7,a simple ELISA double antibody binding system has been developed.By this method,ralative affinity of nine MAbs was estimated from the antibody concentrations at approximately 50% of plateau binding and were ranked.The theoretical basis for this method was discussed. Hybridomas secreting antibodies of desired affinity can be selected at an early stage after fussion by measuring relative affinity of hybridomas supernatants.The type specificity was judged by the difference between end-point concentration against adeno- virus type 7 and type 3.And the relation between affinity and specificity of MAbs was discussed.
5.Cloning and Expression of EGFR Tyrosine Kinase and Construction of the Screening Model for the Enzymatic Inhibitors
Yang ZHANG ; Chun-Ping LIU ; Yuan LI ;
China Biotechnology 2006;0(10):-
As a member of tyrosine kinases(TK) family,Epidermal growth factor receptor(EGFR) has an activity of intrinsic protein tyrosine kinase,which plays an essential role in the regulation of signal transduction in the cells.Due to the abnormal expression of EGFR-TK,the certain type cancers may developed and progressed.Based on that,the inhibitors of EGFR-TK could be effective medicines for the treatment of cancer.The EGFR-TK domain was amplified by RT-PCR with RNA of HUVCEs cells as the template and expressed in E.coliBL21(DE3) using plasmid pET30a as vector.The recombinant protein was purified with the affinity chromatography(Ni-NTA),which was identified to have kinase activity catalyzing the substrate phosphorylated with ATP in the enzymatic reaction.Using the recombinant EGFR-TK as target,the screening model for enzymatic inhibitors was constructed.
6.The Research Advance of Hair Follicle Stem Cell
Lu YUAN ; Chun-Sheng WANG ; Tie-Zhu AN ;
China Biotechnology 2006;0(01):-
Hair follicle stem cells located bulge region of hair follicle,had characteristics of all adult stem cells,including slow-cycling,undifferentiated.They also had the abilities of self-renew and proliferation in vitro.CD34,K15,K19 and Nestin might be the makers of the hair follicle stem cells.They could be induced to differentiate to neurons,glial cells,keratinocytes,smooth muscle cells,melanocytes In vitro and neurons,melanocytes in vivo.There were many signals in regulating the hair follicle stem cells involved Wnt signal,BM Psignal and NFATc1 etc.
7.Study on paeoniflorin-6'O-benzene sulfonate's physicochemical property
Chun WANG ; Jun YUAN ; Wei WEI
Acta Universitatis Medicinalis Anhui 2014;(2):202-205
Objective To investigate the physicochemical property of Pae-6’O-benzene sulfonate ( CP-25 ) . Meth-ods The CP-25 physicochemical property was evaluated by appearance, Lieberman-Burchard reaction, thin-layer chromatogram, Ultraviolet Spectrophotometry ( UV) , solubility and stability. The content of CP-25 was assayed by high performance liquid chromatography. Results The CP-25 had color response featured by terpenoid, and its maximum UV absorption wavelength was 220 nm. CP-25 was slightly soluble in water and petroleum ether. The main influence factor of CP-25 stability was humidity. Conclusion The present study provides experimental basis for quality standard and formulation design of CP-25 .
8.Studies on degradation kinetics of paeoniflorin-6-O’- benzenesulfonate in vitro
Chun WANG ; Jun YUAN ; Wei WEI
Acta Universitatis Medicinalis Anhui 2014;(9):1269-1273,1274
Objective To investigate the degradation kinetics of paeoniflorin-6-O’- benzenesulfonate ( CP-25 ) in vitro. Methods The homogenates of liver and intestine were prepared in vitro, and concentrations of CP-25 in ho-mogenates were detected by HPLC. Results CP-25 was obviously degradable in liver and intestine homogenates, and half life of degradation was decreased when levels of homogenates increased;the metabolisms of CP-25 in dif-ferent homogenates of intestine were diverse, the metabolic actions in duodenum and colon were weaker than those of jejunum and ileum. Conclusion Oral administration of CP-25 suffers first pass elimination from intestine and liver, which suggests the absorption of CP-25 could be further improved by appropriate pharmaceutical preparations.
9.Clinical analysis of intravitreal injection of triamcinolone acetonide combined macular grid photocoagulation treatment for macular edema
Xian-Hua, JING ; Chun-Yuan, SONG
International Eye Science 2014;(10):1834-1836
AIM: To investigate the clinical efficacy and safety of intravitreal injection of triamcinolone combined macular grid photocoagulation treatment for macular edema.
METHODS: Totally 150 cases (150 eyes) with macular edema in our hospital from July 2009 to November 2013 were selected, which were randomly divided into study group (75 cases, 75 eyes) and control group (75 cases, 75 eyes) . The cases in control group were treated with macular grid photocoagulation treatment, those in the study group used triamcinolone acetonide combined macular grid photocoagulation treatment. Best corrected visual acuity ( BCVA ) , parallel optical coherence tomography ( OCT) and fundus fluorescein angiography (FFA) were detected before treatment, after treatment 7d, 1, 3, and 9mo.
RESULTS:After the treatment, patients' vision were significantly improved in two groups (P<0. 05). In the study group 7d, 1, 3, and 9mo after operation, the visual acuity was better than the control group and preoperative (P<0. 05); fovea macular neurosensory layer thickness decreased significantly (P<0. 05). In the control group, the point omentum macular neurosensory retinal thickness was not statistically significant at 7d, 1, 3, and 9mo after operation compared with before treatment (P>0. 05). Fovea macular neurosensory retinal thickness in the study group was significantly lower than that in control group (P<0. 05). Intraocular pressure of 7 cases in the study group increased slightly, and were normal after treatment.
CONCLUSION: Triamcinolone acetonide combined macular grid photocoagulation treatment is accurate, can effectively improve the visual acuity, reduce macular edema, it is safe and reliable, and suitable for clinical application.