1.Study on Apoptosis Induced by Disodium Cantharidinate and Vitamin B6 Injection in Hepatocellular Carcinoma Cell Line HepG2
Chinese Journal of Bases and Clinics in General Surgery 2008;0(11):-
Objective To study the growth inhibision effect of disodium cantharidinate and Vitamin B6 injection on hepatocellular carcinoma cell line HepG2.Methods Different concentrations of disodium cantharidinate and Vitamin B6 injection were applied on the hepatocellular carcinoma cell line HepG2.The inhibition rate of HepG2 growth was measured by MTT assay.The apoptotic rate was detected with flow cytometry,and the morphology of apoptosis was observed by fluorescence microscope.Results The growth of HepG2 cells was significantly inhibited as well as the apoptosis of HepG2 cells was significantly encouraged by disodium cantharidinate and Vitamin B6 injection(P
4.Expression and clinical pathological significance of CXCR4 and HIF-1α protein in esophageal squamous cell carcinoma
Min ZHAO ; Min ZHAO ; Hongbin ZHANG ; Sumin GUO ; Aili ZHENG ; Xiangcun LIANG ; Hongmei CAI ; Jian LIANG
Cancer Research and Clinic 2011;23(11):772-774
Objective To investigate the expression and clinicopathological significance of CXCR4 and HIF-1α protein in esophageal squamous cell carcinoma tissue and explore their correlation.Methods The expression of CXCR4 and HIF-1α protein were assessed by immunohistochemistry SP method in 56 cases with esophageal squamous cell carcinoma and in 20 cases with surrounded normal tissue.Results The expressions of CXCR4 and HIF-lα in esophageal squamous cell carcinoma were significantly higher than those in normal tissues[62.50 % (35/56) vs 10.00 % (2/20); 57.14 % (32/56) vs 0(0/20)](x2=16.259,19.740,P <0.01).The expression of CXCR4 and HIF-1α were both correlated with invasion depth (x2 =4.736,7.665,P <0.05) and lymph node metastasis ( x2 =7.207,6.389,P <0.05),and had no correlation with cancer cell differentiation.The expressions of CXCR4 and HIF-lα in esophageal squamous cell carcinoma were positively correlated (r =0.298,P <0.05).Conclusion CXCR4 and HIF-1α are highly expressed in esophageal squamous cell carcinoma.The two have a close relation to esophageal squamous cell carcinoma growth,invasion and metastasis.
7.Key conception of public hospitals reform
Yaojun ZHAO ; Jian WU ; Shuangbao XIE ; Liang ZHANG ; Zhanchun FENG
Chinese Journal of Hospital Administration 2012;28(2):81-83
An analysis of the fundamental concepts for public hospital reform further defined public hospitals and other hospitals,business and non-business in nature,public benefits and welfare,as well as public benefits and profit-oriented hospitals.These distinctions can help reformers of public hospitals clarify their concepts,make clear the purpose and direction of the public hospitals reform,so as to speed up the reform with theory support.
8.Preparation and identification of anti-HIV-1 gp120 monoclonal antibody
Yongchen ZHANG ; Jian WEN ; Liang ZHANG ; Lei ZHAO
Chinese Journal of Biochemical Pharmaceutics 2010;31(1):26-28,31
Purpose To Prepare anti- HIV-1 gp120 monoclonal antibodies and to identify the specificity of antibodies in order to provide technique for preparing HIV remedial antibodies. Methods The gene fragment of HIV-1 gp120 was connected to PEGX-4T-2 prokaryotic expressing vector. The vector was cut by enzyme. GST-HIV protein was expressed by E. coli XL1-blue. The BALB/c mice were immunized with purified GST-HIV antigen, and then the fusion of mice spleen cell and myeloma cell SP2/0 was executed as the routine cell-fusion technique. Positive cells were screened by Indirect ELISA. Immuno-blotting assay and Western blot identified the specificity of antibodies. Results External gene section from the recombinant plasmid by sequencing showed the same size of HIV-1 gp120 gene sequences. An external expressed protein band of 32 KD was obtained after purified protein SDS-PAGE electrophoresis. It indicated that six strains of hybridoma cells secreting special monoclone antibodies had been obtained. ELISA results showed that six strains monoclonal antibodies only reacted to HIV-1 gp120 antigen. Western blot results showed that a band with molecular weight 32 kDa was obtained, which could interact with HIV-1 gp120 monoclonal antibody. Conclusion Six strains of hybridoma cells secreting special monoclone antibodies had been obtained. The prepared monoclonal antibodies have established a basis for HIV remedial antibody.
9.Inhibitory Effect of Kaixin Capsule on Gene Expression of Myocardial Immune Inflammatory Factor in Dogs After Resuscitation
Xiaoxing LUO ; Dawei WANG ; Yonghua ZHAO ; Jian LIANG
Journal of Guangzhou University of Traditional Chinese Medicine 2004;0(05):-
【Objective】 To investigate the effect of Kaixin Capsule (KC) on gene expression of myocardial immune inflammatory factor in dogs after resuscitation and to search for an effective way to counteract the progress of systemic inflammatory response syndrome (SIRS) after cardiopulmonary resuscitation. 【Methods】 Fifteen hybrid dogs were randomly divided into three groups, 5 dogs each: pseudo-operation group (group A), model group (group B) and KC group (group C). The dog model of cardiac arrest and resuscitation was established; the dogs were executed and the heart was isolated 180 min after the recovery of autonomic circulation. Myocardial total RNA was extracted and the mRNA expression of objective gene was detected by reverse transcription polymerase chain reaction (RT-PCR). 【Results】 mRNA expression of Toll-like receptor (TLR_4) and tumor necrosis factor ?(TNF-?) in group B differed from that ingroup A (P
10.Discussion of standard patient combined with case-based learning in humanistic quality cultiva-tion for interns in the department of thoracic surgery
Weiqiang ZHANG ; Jing ZHAO ; Yingxin PEI ; Jian TAN ; Hailong LIANG
Chinese Journal of Medical Education Research 2014;(1):90-93
Objective To evaluate the methods of standard patient (SP)combined with case-based learning (CBL ) in humanistic quality cultivation for interns in the department of thoracic surgery. Methods Medical interns in the department of thoracic surgery were divided randomly into experimental(n=30)and control group(n=30)respectively. In experimental group,SP combined with CBL was used while in control group traditional teaching was used. At the end of the study,teaching effect was assessed by the final examination and questionnaires and the data were processed by t test andX2 test. P<0.05 signifies statistical differences. Results There was no significant difference in test scores between the two groups (P>0.05). Scores of history-taking,medical check-up,paper writing quality in the final examination in experimental group were significantly higher than those in control group(P<0.01). Satisfaction degrees of doctor-patient communication,responsibility and service attitude in experimental group were better than those of control group(X2=16.484,10.335,20.376,32.851,P<0.01). Conclusions SP combined with CBL teaching method can stimulate the students' interests in thoracic surgery practice,improve the doctor-patient relationship and strengthen the ability of human-istic concern. It is a better clinical thoracic practice teaching method and it is beneficial to cultivating medical students with humanistic concern.