Animals ; Codonopsis ; chemistry ; Drugs, Chinese Herbal ; pharmacology ; Myocardial Reperfusion Injury ; drug therapy ; Rats ; Selenium ; pharmacology

Hepatitis C virus (HCV) accounts for the majority of cases of transfusion acquired hepatitis and may cause chronic hepatitis, cirrhosis and hepatocellular carcinoma. Currently, there is no vaccine against HCV and treatment is expensive and not always effective.The adaptive host immune response in viral clearance of HCV infection was described and the recent progress in vaccine development of HCV, focusing on the fields of DNA vaccine candidates, recombinant viral vectored vaccine candidates and combined (prime-boost) vaccine candidates were summarized. Some challenges and limitations of developing a HCV vaccine were also analysed. In summary, a promising approach of developing an experimental HCV vaccine to induce extremely potent and broad T-cell responses based on prime-boost strategy was presented.

OBJECTIVE:To investigate the effect of bayberry polyphenol(BPP) on thrombopenia induced by cytotoxic drug and radiation in mice and rats.METHODS:The mice and rats were treated with cyclophosphamide and 60Co-? radiation to establish the animal thrombopenia models.RESULTS:Platelet counts were increased in BPP treated animals with a significant difference compared with the controls(P

OBJECTIVE To find out the main commonly encountered pathogen and antibiotic resistance in hospital infection in Department of Neurosurgery. METHODS Clinic samples from Jun 2005 to Jun 2007 were collected and drug sensitive test was taken.RESULTS The most commonly encountered pathogens of infection were Gram-negative bacillI(83.1%),including Klebsiella pneumoniae(25.0%),Escherichia coli(19.1%),andAcinetobacter baumannii(10.3%). The three kinds of pathogens had heavy resistance to at least 8 kinds of antibiotics. The resistance rates to imipenem and ofloxacin were the lowest (6.8% and 32.4%). CONCLUSIONS The pathogens isolated from Departmentof Neurosurgery are Gram-negative bacilli which have multiple antibiotic resistance. The key prevention measures of infection are to control prophylatcic usage of the third generation cephalosporins,strengthen environmental microbial monitoring,hand sterilization and cleaning among the medical staff.

To train the innovation ability of postgraduates is a major goal in postgradu-ates'education. With the practical experience in train master's degree in medical imaging and nuclear medical,we think that developing basic and clinical research in molecular imaging field,can increase the quality and innovation ability of the postgraduates.

Objective To explore the clinical application value of the expression levels of serum hypoxia induced factor-1α(HIF-1α),vascular endothelial growth factor(VEGF),carcino-embryonic antigen(CEA)and CA125 in predicting the recurrence or metastasis of colon cancer after radical resection.Methods Totally 123 cases of colon cancer after radical surgery in our hospital from July 2009 to December 2013 were performed the retrospective analysis.The correlation between the serum markers levels with the recurrence or metastasis was dynamically analyzed.Results (1)The HIF-1αand CEA levels after operation in 123 cases of co-lon cancer were decreased significantly compared with before operation;(2)The HIF-1α,CEA and CA125 levels in 39 cases of re-currence or metastasis were significantly increased compared with those in 84 cases of non-recurrence or non-metastasis (P <0.05);(3)in 39 cases of recurrence or metastasis,the HIF-1α and CEA levels in recurrence or metastasis were increased signifi-cantly compared with those after the end of chemotherapy (P <0.05);(4)HIF-1αwas positively correlated to VEGF(P <0.05). Conclusion The serum levels of HIF-1αand CEA in the patients with colon cancer are positively correlated with recurrence or me-tastasis,the dynamically combined detection of serum markers has an important significance for predicting and early find recurrence or metastasis after radical operation in colon cancer.

Objective To determine the clinical value of EUS in combination with detection of CA19-9 and CA242 for early diagnosis of pancreatic cancer.Methods General features of high-risk group were determed by EUS and the plasma levels of CA19-9 and CA242 measured by ELISA.Results The serum level of CA19-9 was abnormal in 9.80% (10/102) and that of CA242 in 12.75% (13/102) of the patients.They were both abnormal in 7 cases.Of the 7 cases, 3 were found to suffer from pancreatic cancer by EUS, 1 had the tumor that had been clinically confirmed, 1 had posterior peritoneal tumor and 2 were normal.Among 102 cases detected by EUS, 2 showed low echo in pan-creatic head, 2 semi-cyst, 3 pancreatic cancer and proved by pathology.Accurate diagnotic rate, sensi-tivity and specificity were 90.20% (92/102), 50% (4/8) and 93.62% (88/94), respectively, for serum CA19-9.For the serum CA242, the 3 parameters were 87.25% (89/102), 50% (4/8) and 90.43% (85/94), respectively.For combination of both methods, they were 98.04% (100/102), 100%(8/8) and 97.87%(92/94), respectively.Accurate diagnostic rate of the latter was significantly higher than that of the former 2(P＜0.05).Concision Combination of EUS with detection of serum CA19-9 and CA242 is of great vlaue for early screening of pancreatic cancer.

OBJECTIVE:To establish the quality standard of Huoxuesan. METHODS:Microscopic identification method was adopted for the qualitative identification of Rhizoma pinelliae,Eupolyphaga seu,Phellodendron amurense and Fructus kochiae in the preparation. HPLC was adopted for the contents determination of phellodendrine,polydatin,jatrorrhizine,berberine and emo-din:the column was ZORBAX Eclipse Plus C18 with methanol-0.1% phosphoric acid(gradient elution)at a flow rate of 0.4 ml/min,the detection wavelength was 240 nm,column temperature was 30 ℃,and the injection volume was 5 μl. RESULTS:Micro-scopic identification map of R. pinelliae,E. seu,P. amurense and F. kochiae was clear. The linear range was 0.159-5.073 μg(r=0.997 4)for phellodendrine、0.149-4.761 μg(r=0.999 9)for polydatin、0.239-7.649 μg(r=0.995 5)for jatrorrhizine、0.165-5.268 μg (r=0.997 2)for berberine、0.012-0.382 μg(r=0.999 9)for emodin;RSDs of precision,stability and reproducibility tests were low-er than 3.0%;recoveries were 98.9%-104.1%(RSD=1.9%,n=6),96.1%-101.7%(RSD=2.5%,n=6),99.6%-105.1%(RSD=2.6%,n=6),90.3%-98.2%(RSD=2.9%,n=6)and 92.9%-96.4%(RSD=2.0%,n=6)respectively. CONCLUSIONS:The es-tablished standard can be used for the quality control of Huoxuesan.

Objective To investigate the effect of the courses of image diagnostics on clinical pro-bation period via the combination of PBL and multimedia network teaching model. Methods 126 under-graduates from the department of medical image (Grade 2011 and 2012) were selected as teaching subjects, and PBL combined with multimedia network teaching was adopted in the teaching of the course of medical imaging diagnosis. After class we implemented a questionnaire survey, and let the students write learning experience. Statistical analysis was conducted by using SSPS 13.0 to reflect the teaching participation in the students' questionnaire and a. summary analysis of the learning experience of the students was also made. Results 123 valid questionnaires were collected. 94.31%(116 people) of students were active participants in these courses, 90.25%(111 people) of the students thought they could actively communicate in teaching, and 43% (110 people) of the students thought they got fully prepared before class. 123 articles in accor-dance with the requirements of experience were received; most students took positive attitude to the active influence the teaching methods had brought; some student pointed out that the teaching method had the disadvantages such as too much time to prepare, too much information, and so on. Conclusions The com-bination of PBL and multimedia network teaching has preliminary results. It is a novel model that is available for teaching image diagnostics on clinical probation period.

The quality control and evaluation methods of Schizonepeta tenuifolia were established by HPLC fingerprint, multi index component content determination and chemical pattern recognition to provide basis for the quality control of medicinal materials. The chemical components of 25 batches of Schizonepeta tenuifolia panicle medicinal materials and decoction pieces collected were analyzed by high performance liquid chromatography, and the common pattern of fingerprint was established. A total of 22 common chromatographic peaks were calibrated, and their similarity was more than 0.9. The samples were divided into three categories according to different producing areas by cluster analysis. The results of principal component analysis and cluster analysis were consistent. Finally, five differential markers of different batches of Schizonepeta tenuifolia were selected by orthogonal partial least squares discriminant analysis. Through the identification of the reference substance, it was determined that peak 9 was hesperidin, peak 10 was rosmarinic acid, peak 13 was tilianin, peak 14 was quercetin, and peak 20 was pulegone. The quality evaluation method established in this study is stable and reliable, and is suitable for the quality control of Schizonepeta tenuifolia.