Pancreatic ductal adenocarcinoma is the most common pancreatic neoplasm characterized by latent morbidit,poor prognosis,high mortality rate and limited choice of treatment.Quitealot studies focused on its pathogenesis,and showed molecular genetic alterations,which derived of genetic and environmental factors and played an important role in tumorigenesis.Recently,more and more findings laid particular emphasis on the changes of gene molecule and some were confirmed in vitro and in vivo.In this paper,we made a review and summarized the marked molecular changes and signalings of the four major pathways to understand their functions in PDAC.

Adolescent ; Diagnosis, Differential ; Hepatectomy ; methods ; Humans ; Liver Cirrhosis ; congenital ; diagnostic imaging ; pathology ; surgery ; Male ; Tomography, X-Ray Computed

Pancreatic neuroendocrine neoplasm (pNEN)is a kind of rare neoplasms with high heterogeneity.Surgery is the first choice to cure local resectable tumor.However,for patients with local advanced tumor or distant metastasis, medical treatment is the main option. Medical treatment mainly encompasses biotherapy, targeted therapy and chemotherapy.Clinicians should make therapeutic option for patients based on the functional status and somatostatin receptor status of the tumor,tumor grade,tumor stage and drug toxicity profile.

Objective To study the Diels-Alder type adducts in the stem bark of Morus mongolica.Methods The compounds were isolated and purified by silic gel column chromatography,RP18 and Sephadex LH-20.The structures were identified by various spectral evidence.Results Six Diels-Alder type adducts were obtained and they were albanin F(Ⅰ),kuwanon L(Ⅱ),dimoracin(Ⅲ),kuwanon J(Ⅳ),mulberrofuran J(Ⅴ),mulberrofuran Q(Ⅵ).Conclusion Compounds Ⅱ,Ⅲ,and Ⅴ are isolated from the plant for the first time and compounds ⅣⅥ show the anti-oxidation activities.

Objective To explore the effect of bone marrow stromal cells (BMSC) transferred by Nell-1 gene combined with biomaterial fibrin glue (FG) to enhance segmental bone defect healing in dog mandible. Methods Nell-1 gene vector was reconstructed in retroviral vector and then transfected BMSC. The protein of Nell-1 gene in transferred cells was determined by immunohistochemistry. Segmental defects were created surgically in the dog’s mandible. The defect was repaired with BMSC transfected by Nell-1 retroviral granules in presence of FG,untransfected BMSC in combination with FG,and FG alone. The control group was left untreated. The defect-repairing capability for each treatment were assessed by gross observation,radiography,and histology at 8th week and 16th week. Results Cells transfected by Nell-1 retroviral granules expressed abundant Nell-1 mRNA and protein in the cytoplasm. Positive results were not found in those cells that were not transferred. The use of BMSC transferred by Nell-1 retroviral granules combined with FG materials exhibited the strongest defect-repairing ability. Gross observation,radiographical and histomorphometric analyses revealed a significantly greater total area of bone formation,increased amount of the new bone in the defects than in those treated with the untransfected BMSC. Conclusion Nell-1 gene transfection may be used to promote the osteogenic ability of BMSC.

The contents of the components in waste eel bone from roast eel were determined. Optimal conditions for extracting eel bone oil from waste eel bone as raw material, purifing the polyunsaturated fatty acids (PUFA) concentrates from eel bone oil via salt-forming with urea complexation, and preparation of microcapsules containig PUFA concentrates from eel bone oil by spray drying were investigated systematically. The results showed that the technique was easy to carry out, the complete yield for extracting eel bone oil was above 76%, the contents of EPA and DHA in PUFA purified from eel bone oil increased from 7. 4% to about 45%, the recovery of EPA plus DHA was 64% , the content of PUFA from eel bone oil in the microcapsuls was about 26. 2%, and its antioxidative stability was higher than that of mixture of PUFA concentrates without capsulizing.

Objective To evaluate the efficacy of supportive psychotherapy on patients with cardiac neurosis. Method 32 patients with cardiac neurosis were treated with a comprehensive measure consists of adequate drug therapy and supportive psychotherapy. Symptom Checklist 90 (SCL - 90) was rated. Result Among the 9 factors of SCL - 90, scores of somatization, obsessive - compulsive, interpersonal relationship, depression, anxiety and phobic anxiety factors were significanly higher than that of normal controls. After treatment, the scores of somatization, depression, anxiety and phobic anxiety were statistically reduced. Patient- reported improvement efficacy was 84. 38%.Conclusion Adequate drug therapy together with supportive psychotherapy has reliable efficacy on patients with cardiac neurosis.

Objective To investigate clinical significance of positive antineutrophil cytoplasmic antibodies (ANCA) in diagnosis for vasculitis or other diseases. Methods From January 2005 to December 2008, 104 patients with positive ANCA detected by enzyme-linked immunosorbent assay (ELISA) in People's Hospital of Peking University were randomly selected and their clinical features and diagnoses were analyzed retrospectively. Results Among 104 ANCA-positive patients, 22 were diagnosed as vasculitis and 13 as ANCA-associated vasculitis, and 82 (78. 8% )were diagnosed as non-vasculitis including 40 of connective diseases such as systematic lupus erythematosus (SLE) and rheumatoid arthritis (RA) and 42 of non-connective diseases with the most common of ulcerative colitis. According to the results of ANCA tests by ELISA, ANCA-positive patients could be divided into those with proteinase 3 (PR3)-positive and myeloperoxideaso (MPO)-positive. More organs were involved in MPO-positive patients (n =48 ) than that in PR3-positive ones ( n = 49), and more frequent involvement of the kidneys and less frequent involvement of the gastrointestinal tract in MPO-positive than those in PR3-positive ones (P < 0. 01 ). As compared to those with non-vasculitis, more organs (2. 28 organs vs. 3.55 organs in average) were involved in patients with vasculitis (P <0. 01 ) and more frequent involvement of the upper or lower respiratory tracts and the kidneys in vasculitis patients ( P <0. 01 or <0. 05, respectively). Elevated leukocyte count and accelerated erythrocyte sedimentation rate (ESR) were also more common in vasculitis patients than those in non-vasculitis ones (P <0. 01 and P <0. 05, respectively). Positive ANCA combined with number of organs involved, clinical manifestations and other laboratory findings, its positive predictive value (PPV) in diagnosis for vasculitis can be improved. Conclusions Spectrum of disease in patients with positive ANCA was varied. Diagnostic value of positive ANCA in diagnosis for vasculitis can be improved if combined with comprehensive analysis of their clinical features and laboratory examinations.

Objective To integrate the present information systems such as HIS,EMR,LIS and UIS into an integrated medical information platform.Methods The drawbacks in point-to-point mode and mid-database mode were avoided in aspects of upgrading and maintaining,and medical data exchange technology was used to research the hot spots of hospital information construction.Results The practice has proved that the new technology in the Web Services and ZeroC ICE provides a more effective model for new generation middle ware technology and digital hospital construction.Conclusion Combined with the development of SOA technologies to analyze the development and evolution of technology,the construction direction of medical data exchange are put forward from double angle of technical and business.

Adult ; Antiretroviral Therapy, Highly Active ; Female ; HIV Infections ; drug therapy ; Humans ; Lamivudine ; administration & dosage ; Male ; Middle Aged ; Treatment Outcome ; Zidovudine ; administration & dosage