1.Effective of anticancer mouse monoclonal antibody against hMIC-1 targets pancreatic tumor for nude mice in vivo
Zhaoyang LIU ; Xiaobing WANG ; Wei ZHANG
Chinese Journal of Comparative Medicine 2014;(3):14-19
Objective To investigate a antitumor effects of mouse original monoclonal antibody against hMIC -1 as intravenous administration with human pancreatic tumor in vivo and providing experimental data .Methods The fourty-eight mice were randomized into eight groups for loaded with two pancreatic tumor cell lines panc -1 or sw1990 respectively , and individual tumor growth was observed , antitumor efficacy was evaluated after using mouse original monoclonal antibody against hMIC-1 by intravenous administration .The pathological change with formalin fixed , paraffin embedded tissues section was viewed .Results There was a significant difference in tumor volume and weigt in intravenous injection of mouse original monoclonal antibody against hMIC-1 on load pancreatic tumor with nude mice group compared with that in the control group after four week treatment , and the mouse original monoclonal antibody against hMIC-1 demonstrated a close association between inhibition of tumor volume growth and dose-effective in the two xenograft models examined .Under examined microscope , the pancreatic tumor tissue was destroyed evidently in mouse original monoclonal antibody against hMIC-1 group.Conclusions The antitumor effect of intravenous injection for mouse original monoclonal antibody against hMIC-1 is better than that of systemic using gemcitabine .
2.Increasing insurance protection efforts and improving the fairness of health care services: A-nalysis on the convergence mechanism between New Rural Cooperative Medical Scheme and Healthcare Financial Assistance Program
Yazhen YING ; Wei PAN ; Zhaoyang ZHANG
Chinese Journal of Health Policy 2015;8(11):3-8
The goal of China's health care insurance system is to improve the fairness and accessibility of health care services for low-income people. In the past 10 years of practice, the insurance has made remarkable a-chievements and gained popularity among broad masses of people. With the support of World Bank and UK Depart-ment for International Development, China Rural Health Development Project ( hereinafter referred as Health XI Project) have used the advantages of unique funding, management and human resources to launched a series of pro-ject activities, with the main goal of achieving effective convergence between the New Rural Cooperative Medical Scheme (NRCMS) and Healthcare Financial Assistance Program (HCFAP) in order to explore the assistance system of catastrophic diseases. Some areas have achieved seamless convergence between NRCMS and HCFAP to explore the assis-tance program for catastrophic diseases in the context of confirming and optimizing the management of services covered by the project, especially conducting a series of exploration and practice activities in the aspects of increasing new funding channels to establish theCatastrophic Disease Assistance Fund, strengthening the related supporting regulations, etc. The results show that the utilization of services covered by HCFAP in the project has significantly improved, the protection level of health insurance has greatly improved, and the people satisfaction has significantly increased.
3.The induction of apoptosis by epigallocatechin-3-gallate in xenograft nude mice with human gastric cancer cells
Changying LI ; Wei ZHOU ; Juan CAO ; Shaona ZOU ; Zhaoyang LUO
China Oncology 2006;0(09):-
Background and purpose:To investigate the induction of apoptosis by epigallocatechin-3-gallate(EGCG) in xenograft nude mice with human gastric cancer cells and its molecular mechanism. Methods:Human gastric cancer cells were planted into nude mice in order to establish the cancer model, the different dosages of EGCG were injected intraperitoneally in the nude mice. After treatment, flow cytometry (FCM) was used to detect the apoptosis of implanted tumor cells. Immunohistochemical staining was used to detect the expression of apoptosis-related genes like Bal-2 and Bax in implanted tumor.Results:EGCG significantly inhibited tumor growth after being injecting intraperitoneally in the nude mice. The apoptotic cells in implanted tumor could be detected by flow cytometry with PI staining. The expressions of Bax、Caspase-3 were upregulated and Bcl-2 expression was downregulated in implanted tumor.Conclusions:EGCG could significantly inhibit tumor growth in xenograft nude mice with human gastric cancer cells through inducing apoptosis. The down-regulation of Bcl-2 expression and up-regulation of Bax expression observed could result in the activation of Caspase-3, the pathway might account for the induction of apoptosis.
4.The distinguishing of gastric cancer associated genes by digital gene expression displayer using serial analysis of gene expression database
Fang XIONG ; Daguang XIAO ; Zhaoyang ZENG ; Wei XIONG ; Juhua YANG
Journal of Chinese Physician 2001;0(03):-
Objective To proceed deep data mining in large database obtained by Cancer Genome Anatomy Project and to distinguish the difference expression genes of gastric carcinoma.Methods The 300,783 serial analysis of gene expression records from 4 libraries of gastric cancer and 2 libraries of normal gastric tissue in database of the Cancer Genome Anatomy Project were analyzed by digital gene expression displayer.Results The 201 difference expression tags represented 136 genes(54 up-regulated and 82 down-regulated) and 65 ESTs(24 up-regulated and 41 down-regulated) were distinguished,and these genes were involved in biological process and signal transduction pathways,such as cell cycle regulation,cell proliferation and apoptosis.The gene expression profile in whole body normal and cancer tissues of PTMA were constructed by digital Northern based on serial analysis of gene expression database and by virtual Northern based on cDNA database,respectively.Conclusion The difference expression genes of gastric cancer can be distinguished effectively with bioinformatics,and the results will guide our further molecular biology research.If validated by molecular biology experiment,the difference expression genes will be used as molecular targets of gastric carcinoma.
5.A road to new healthy countryside:Policy design and initial effects of China's healthy rural re-construction
Zhongming LIU ; Wei PAN ; Rui LI ; Zhaoyang ZHANG
Chinese Journal of Health Policy 2015;8(11):21-25
Healthy rural reconstruction is a widely explored intervention implemented by China Rural Health Devel-opment Project with the support of the World Bank and UK Department for International Development. By using initial pro-ject baseline data survey, mid-term evaluation and supervision, terminal evaluation of acquired qualitative and quantitative data,this paper analyzes the intervention policy design and initial effects of China's healthy rural reconstruction. With transforming the living environment in rural areas as the starting point, the project has relatively achieved good results, by using different policy measures such as improving the environment, creating a social environment conducive to villagers' health, expanding and providing high-quality health services, foster healthy behaviors and lifestyles, etc. The main results include the expansion of the project to cover 745 administrative villages, the environment of healthy villa-ges is much better than other neighboring villages, villagers' health knowledge has been greatly increased, lifestyle be-haviors of villagers have improved, the attitudes and participation rate of residents in cultural and sports activities have improved, etc. This paper suggests implementing the healthy rural reconstruction nationwide. It is very important to in-tegrate the concept of healthy village throughout the connotation of all kinds of new rural reconstruction, so the concept of health is deeply rooted in rural areas and imperceptibly change people's living behaviors and habits.
6.Practice and implications of the medical insurance payment system reform: Exploration based on Health XI Project
Zhaoyang ZHANG ; Wei PAN ; Kun ZHU ; Yanhua CHI
Chinese Journal of Health Policy 2017;10(9):1-7
Medical insurance payment reform is an important part of healthcare reform in China. Based on the practice and research of China Rural Health Project ( hereinafter referred asHealth XI Project) financed by World Bank (WB) and UK Department for International Development (DFID) implemented in 40 counties of 8 Chinese provinces between 2009 and 2014 , this thesis analyses the principle and feasible policy route of medical payment re-form for the country, by ways of reviewing the policy evolution, and summarizing the process of project pilot from sin-gle mode of payment-a simple mixed payment-to the comprehensive payment system reform and analyzing the advanta-ges and disadvantages of medical insurance payment methods.
7.Antibacterial mechanism of silver nanoparticles:a dose-dependent promotion of cell apoptosis
Xiaoxu YU ; Huijing BAO ; Chen XU ; Xue LI ; Zhaoyang LI ; Yuexiang ZHANG ; Yunde LIU ; Dianjun WEI
Chinese Journal of Tissue Engineering Research 2015;(38):6173-6178
BACKGROUND:Silver nanoparticles (AgNPs) show strong antibacterial effect and are not easy to have drug resistance. But the antibacterial mechanisms of AgNPs have not been wel developed.
OBJECTIVE:To explain the antibacterial mechanisms of AgNPs.
METHODS:We investigated the influence of Ti, TiO2 and TiO2 containing AgNPs onEscherichia coliand Staphylococcus aureus by bacterial inhibition ring test. Escherichia coli was cultured in LB liquid medium with 0, 5, 10 mg/L AgNPs. We measured the absorbance value of bacterial culture. DNA gel electrophoresis was used to study the effect of AgNPs onEscherichia coliDNA. Then we researched the character of apoptosis on Escherichia coli by Annexin V and PI staining, using flow cytometry.
RESULTS AND CONCLUSION:The inhibiting effect of Ti and TiO2 onEscherichia coliandStaphylococcus aureus was not obvious. But the inhibition rings of TiO2 containing AgNPs to bacteria appeared. The absorbance value of Escherichia coliculture was reduced whenEscherichia coliwas co-cultured with AgNPs. And this decrease tendency was in direct proportion with AgNPs concentration. AgNPs reduced the amount of DNA of Escherichia coli and this tendency was directly proportional with AgNPs concentration. TheEscherichia coli apoptosis rate induced by AgNPs was increased and this tendency was positively correlated to the AgNPs concentration. These results indicate that AgNPs can induce bacterial apoptosis to influence the growth of bacteria.
8.Cardioprotective effects of ischemic post-conditioning in the elderly with acute myocardial reperfusion injury
Hui WANG ; Zhaoyang XUE ; Xuerong SONG ; Zhijian YANG ; Min LU ; Ning ZHANG ; Wei LI ; Kejiang CAO
Chinese Journal of Geriatrics 2011;30(9):714-717
ObjectiveTo study the cardioprotective effects of ischemic post-conditioning on elderly patients with ST-elevation acute myocardial infarction (STEM1).MethodsConsecutive 215 patients with STEMI undergoing emergency percutaneous coronary intervention(PCI) were randomly assignedto receive ischemicpost-conditioningorconventional PCItreatment.The ischemic postconditioning (n=38) were conducted by 3 episodes of 30-second occlusion followed by 30-second reperfusion, while the control group (n= 46) was without any intervention after PCI.Reperfusion arrhythmias, corrected TIMI frame count (cTFC) and TIMI myocardial perfusion grade (TMPG)were compared between the two groups, respectively.Results The incidence of reperfusion arrythmias was less frequent in ischemic postconditioning group (21.1% ,8/38) than in control group (45.7% ,21/46) after PCI (x2 = 5.571, P<0.05). The TIMI grade 3 flow was similar between two groups [(94.7%(36/38) vs. 82.6%( 38/46), x2= 2.919, P>0.05], the cTFC levels (23.6±3.7vs. 26.1 ±5.9) and TMPG 3 perfusion [ 89.5% (34/38) vs.69.6% (32/46)] were significantly different (t= 5.434, P<0.05; x2 = 4.899, P<0.05, respectively) between two groups.ConclusionsIschemic postconditioning may reduce myocardial reperfusion injury in elderly patients with STEMI undergoing emergent PCI.
9.Clinical analysis of modified pancreatoduodenectomy with preservation of ascending portion of duodenum
Jinshen WANG ; Jun NIU ; Zhaoyang ZHANG ; Guangyun YANG ; Xiaopeng WU ; Zhiyong ZHAN ; Wei SONG ; Kesen XU
Chinese Journal of Digestive Surgery 2009;8(4):265-268
Objective To investigate the value of modified pancreatoduodenectomy in the treatment of ampullary carcinoma by comparing the efficacy of pancreatoduodenectomy with preservation of ascending portion of duodenum and that of Whipple procedure. Methods The clinical data of 133 patients with ampullary carcinoma who had been admitted to the Qilu Hospital from 1990 to 2006 were retrospectively analyzed. Of the 133 patients, 88 received Whipple procedure (group A) and 45 received pancreatoduedenectomy with preservation of ascending portion of duodenum (group B). The preoperative condition of the patients and short- and long-term efficacy of the 2 procedures were compared by Fisher exact probability, t test, chi-square test, Kaplan-Meier survival curve and Log-rank test, and the differences between the efficacy of the 2 procedures were compared. Results The operation time, time of gastrointestinal function recovery, hospital stay and ratio of patients with blood transfusion were (366±111) minutes, (7.4±1.4) days, (24±9) days and 76% (67/88) in group A, and (325±32)minutes, (4.3±1.4)days, (31±14)days, 42% (19/45) in group B, with significant difference between the 2 groups (t = 2.34, 2.08, 1.98 ; χ2 = 14.99, P < 0.05). The medium survival time of patients in groups A and B were (19.0±1.5)months and (16.9±1.7) months, with no significant difference between the 2 groups (χ2 = 0.46, P > 0.05). There was no significant difference in the occurrence of postoperative complications between the 2 groups (P > 0.05). Conclusions Pancreateduodenectomy with preservation of ascending portion of duodenum can be applied for patients with ampullary carcinoma.
10.Experimental study on the effect of high-intensity focused ultrasound (HIFU) using Sonablate-500 in the ablation of canine prostate.
Jun, LU ; Zhangqun, YE ; Wei, WANG ; Zhaoyang, CHEN ; Yuanfeng, ZHANG ; Weilie, HU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2007;27(2):193-6
To investigate the safety, feasibility and effectiveness of transrectal high-intensity focused ultrasound (HIFU) in the ablation of canine prostate, 20 dogs were divided randomly into 5 groups. Sixteen canine prostates were treated with the third-generation transrectal HIFU device (Sonablate-500). Transrectal ultrasound images of the prostate and prostatic urethra were observed preoperatively and postoperatively. Serial study was performed 30 min, 30 days, 60 days and 180 days after the therapy. The rectum, periprostatic tissues, and prostate were excised en bloc and the tissues were fixed for gross and histological analysis. Our results showed that the average maximal diameter of prostatic urethra was 0.59+/-0.11 cm before the operation and 2.57+/-0.98 cm 60 days after the operation. The volume of prostate was 6.5+/-3.12 cm(3) before the treatment while the volume was 4.13+/-0.23 cm(3) 60 days after the treatment and the differences were statistically significant (P<0.05). Histologically, there was a clear demarcation between the necrotic area of the treated tissues and the unaffected surrounding tissues. All the necrotic tissues in the targeted zone broke off and the prostatic urethra became cavitary 60 days later. The more frequent complications were urinary retention and frequency and hematuria. No rectal injury occurred during the treatment. It is concluded that the third-generation transrectal HIFU is capable of destroying prostatic tissue, substantially increasing the width of the prostatic urethra without causing injury to the adjacent tissues. The risk of postoperative complications associated with HIFU was low. HIFU may become a safe, effective and minimally invasive alternative for the treatment of prostatic diseases.