Duodenal varices are an uncommon disease which occurs along the entire gastrointestinal tract outside the esophagus or stomach.Among ectopic varices,duodenal varices are the most common one.Cirrhosis,hepatic portal hypertension,extrahepatic portal vein occlusion and vasculitis contribute to the pathogenesis of ectopic variceal formation.The unusual pathophysiology,location,diversity and uncertain curative effect of DV are associated with its low detection rate and high mortality of patients.Therefore,the diagnosis and treatment of DV is one of the tough problems in clinical practice.This article reviews the current research advances in pathophysiology,diagnosis and treatment of duodenal varices to provide reference for clinical practice.

Based on the requirements of quality assurance during drug control process,a quality assurance system is developed for drug control in the institute of drug and equipment control.The results show that the method developed in this paper is much suitable tothe process of drug control and can be applied tocontrolling the quality from the drug receiving tothe drug releasing.The quality assurance system guarantees that the detected data are achieved scientifically and efficiently.

Objective To analyze the application rules of Jiaotong Xinshentreating principle in modern clinic based on TCM inheritance auxiliary platform.MethodsJiaotong Xinshen treating principle related prescriptions in CNKI and Wanfang databases were analyzed.“Jiaotong Xinshen”and “Xinshen Bujiao” were set as key words to retrieve relevant prescriptions in the databases. TCM inheritance auxiliary platform (V2.5) software was used to establish database. Data mining methods, such as frequency statistics and association rules were used to analyze new prescriptions aboutJiaotong Xinshen treating principle guided medication rules.ResultsTotally186 prescriptions were collected and analyzed. Medicine frequency and association rules among medicines in the prescriptions were confirmed. 12 medical combinations and 6 new prescriptions were mined.ConclusionThe data management platform and data mining methods can be applied in discovering the prescription patterns and medications rules ofJiaotong Xinshen treating principle in clinical application.

Gastrointestinal endoscopy plays a major diagnostic and therapeutic role in most gastrointestinal disorders.However,limited data of clinical safety is available in pregnant patients.Large studies,preferably prospective,with follow-up of fetal outcome are needed to determine fetal safety of endoscopy.This article briefly analyzed the literature on the research progress of gastrointestinal endoscopy during pregnancy,which offered an evident base for diagnosis and treatment in digestive diseases.

Objective To detect the protein expressions of S100A7 and CD34 in basal-like breast carcinoma and analyze the clinical relationship between S100A7 and basal-like breast cancer and the connection with CD34 markers microvessel denisity (MVD).To study the function of S100A7 in basal-like breast cancer angiogenesis,invasion and metastasis.Methods Immunohistochemistry (IHC) was used to detect the expressions of S100A7 and CD34 in 60 cases of basal-like breast cancer,40 cases of non basal-like breast cancer and 20 cases of normal breast tissues.Results The expressions of S100A7 in basal-like breast cancer,non basallike breast cancer and normal breast tissues were 83.33％,62.50％ and 35.00％ respectively.There were significant differences among them (x2 =5.556,P ＜ 0.051; x2 =17.107,P ＜ 0.05; x2 =4.051,P ＜ 0.05).There was positive correlation between S100A7 and lymph node metastasis,TNM staging and MVD of basal-like breast cancer patients.But there was no significant correlation between S100A7 and patient's age and tumor sizes.Conclusion The up-regulation of S100A7 expressions may be associated with the occurrence and development,invasion and metastasis,angiogenesis of basal-like breast cancer.The effects of S100A7 promoting angiogenesis may be an important factor in the acceleration of the local invasion and distant metastasis in basallike breast cancer.

A medical metrology supervision system is proposed.It analyses the composition structure including data input and print,statistic inquiry,data acception and report as well as data file management.The technological characteristics are analyzed including system classification,authorization and password control,system safety and file output.Making the military medical metrology supervision more standardized and scientific,the system remarkably improves the work efficiency.

BACKGROUND:Changes of both stem cell markers and endothelial cell phenotype help understand characteristics of endothelial progenitor cells during adherent differentiation.However,there is still no specific cell marker to distinguish from mature endothelial cells.OBJECTIVE:To study the changes of stem cell markers and endothelial cell phenotype during the differentiation of rat peripheral blood rnononuclear cells into endothelial cells.DESIGN.TIME AND SETTING:Cell observation study was performed in the Laboratory of Cardiac Surgery,Qingdao Municipal Hospital between June 2004 and December 2008. MATERIALS:Peripheral blood was drawn from male SD rats to obtain mononuclear cells by Ficell density gradient centrifugation. METHODS:Mononuclear cells were in vitro cultured in fibronectin culture medium and induced by vascular endothelial growth factors(VEGF)and basic fibroblast growth factors(bFGF)in order to stimulate a differentiation into endothelial cells. MAIN OUTCOME MEASURES:Adherent cells in the culture system were identified for CD31,CD34,Rk-1 and vWF with immunochemistry within 1-7 days.RESULTS:The expressions of CD31.CD34,FIk-1.vWF on adherent cells were different in different time durations.The expressions of CD31 and CD34 started on the 2nd day of culture.reached the peak on the 4th day,gradually decreased and even disappeared on the 6thday.While.FIk-1 expressed on the 3rd day of culture,gradually increased,and reached at the peak on the 7th day.vWF expressed gradually until 100%on the 7th day. CONCLUSION:The differentiation of peripheral blood stern cells into endothelial progenitor cells is characterized by the appearance of endothelial cell phenotypes and the disappearance of stern cell markers.both in the manner of gradual progression.

Objective To investigate the synthesis of heat shock protein 70 (HSP70) induced by norepinephrine preconditioning on donor heart and its effects on myocardial cell apoptosis and apoptosis related proteins. Methods 18 Wistar rats were random divided into 2 groups, with 9 in each group. The rats in the control group were intraperitoneally injected with 0.5 ml saline. After 24 hours, hearts were isolated and stored with histidine-tryptophan-ketoglutarate (HTK) solution at 4 ℃ for 3 hours to establish Langendorff isolated heart models, and then isolated hearts were perfused by Langendorff model with Krebs-Hense leit (K-H) solution for 2 hours. The rats in the experimental group received intraperitoneally 3. 1 μmol/kg (0. 53 mg/kg) noradrenaline bitartrate that was dissolved in saline and hearts were isolated and stored after 24 hours. Followed process was the same as that in the control group. Myocardial HSP70, Bcl-2, Bax content, apoptosis index were measured, cell structures were observed under light and electron microscope.Results HSP70 in the experimental group were higher [(17.78 ± 1.82)%] than those in control group [(5.22 ± 1.05)%], and biochemical indicators in texperimental group[(41.88 ± 5.09)%, (22.61 ±3. 49 ) %] were better than those in control group [(31.36 ± 3. 27 ) %, ( 40. 52 ± 4. 1 7) %]. There were alleviated ultrastructure injures in experimental group compared with those in control group. Conclusions This study demonstrated that norepinephrine preconditioning could induce high expression of HSP70 and it could play a very important role during ischemia-reperfusion. It could protect the structure and function of myocytes in isolated rat hearts and inhibited myocardial apoptosis.

BACKGROUND: Heart valve tissue engineering is aimed to construct heart valve grafts with the physiological function and biological activity by using engineering and life science principles and methods, but still in the animal experiment stage.OBJECTIVE: To summarize the commonly used tissue engineered heart valve, and to evaluate the reliability of different types of heart valve biomaterials.METHODS: Using "biological materials, heart valve, scaffolds, reviews, tissue engineering" in Chinese as the key words, a computer retrieval was performed for articles published from January 2000 to December 2010. Articles regarding the biomaterials in tissue engineered heart valve were included; the duplicated research or meta-analysis were excluded.RESULTS AND CONCLUSION: A total of 20 papers about the biomaterials and tissue engineering heart valve were screened out. Due to the superior biocompatibility and three-dimensional conformation, natural scaffold materials exhibit unparalleled bionic property compared with other materials. Synthetic biodegradable polymer materials with good mechanical properties and controllability has thus been highly favored by researchers, while the composite scaffold materials of natural materials and polymer materials provides a new strategy and direction for the investigations of tissue engineered heart valve, and has broad application prospects.

Objective To evaluate the effects of hyperbaric oxygen (HBO) combined with drug therapy on patients with delayed encephalopathy caused by carbon monoxide poisoning ( COP). Methods Twenty to forty sessions of HBO therapy were used to treat 34 COP patients. Assessment relied on 99mTc-ethyl cysteinate dimer (~(99m)Tc-ECD) single photon emission computed tomography (SPECT) imaging of cerebral perfusion before and after treatment. Results After HBO therapy, cerebral perfusion in the COP patients improved significantly. There was a significant difference of the SPECT images before and after treatment. Conclusions SPECT imaging of cerebral perfusion can play an important role in the diagnosis of delayed encephalopathy caused by carbon monoxide poisoning, and it can be used for the therapeutic surveillance of HBO treatment.