Objective:To evaluate the application of chromogranin A(CgA) as a marker in the diagnosis of prostate cancer. Methods:Serum CgA and serum prostate-specific antigen (PSA) were detected by immunoradiometric essay in 27 cases of prostatic carcinoma ,27 cases of benign prostate hyperplasia (BPH)and 5 cases of healthy subjects. Results:Serum CgA(98.7?69.42) in patients with prostatic carcinoma was significantly higher than that in healthy subjects(32.68?26.58) and in patient with BPH(44.7?40.86)(P

Objective:To summarize the experience of retroperitoneoscopic renal pedicle lymphatic disconnection in the management of chyluria,and to investigate a new minimally invasive treatment of chyluria. Methods:9 cases of chyluria were treated by retroperitoneoscopic renal pedicle lymphatic disconnection from Jan 2005 to Dec 2008 with 7 male ones and 2 female ones. The average age was 48 years. 8 of 9 cases obtained success and 1 of 9 cases was converted to open surgery. Operation time, blooding volume, postoperative complication and hospitalization stay, and the operative effect were observed. Results:The operation time was from 65 to 105 min,with the average of 70 min. The blooding volume was from 50 to 100ml, with the average of 60ml. Chyluria disappeared immediately after operation in all patients. Postoperative stay was from 5 to 7d and no complication happened. Conclusion:Retroperitoneoscopic renal pedicle lymphatic disconnection for chyluria is a effective and efficienl method in the management of chyluria. And it is also safe , minimally invasive , with less blood loss, fewer complications , and short hospital stay .

Entry of enveloped viruses into host cells requires fusion of the viral envelope with a cellular membrane. This step is mediated by viral glycoproteins that undergo a dramatic conformational change. Recent advances in structure and function of the fusion proteins of the class Ⅱ viruses, Rhabdoviruses and Herpesviruses were described. Proteomics computational analyses to locate the functional domain of fusion protein were introduced. The fusion proteins of class Ⅱ and class Ⅰ viruses differ radically in their initial structures but refold toward similar final conformation (trimer of hairpin). The Rhabdoviruses and Herpesviruses have a novel fold combining features of fusion proteins from class Ⅰ and class Ⅱ. The fusion proteins of these viruses have a different conformation change and mediate a different fusion process, therefore, the proteins belong to a novel class of fusion proteins. The potent inhibitor of virus entry should be new strategies for developing antiviral drugs.

Objective To investigate the prevalent characteristics of children with viral pneumonia in different areas and years.Methods The viral antigen of cells of nasopharyngeal secretions was detected by the method of alkaline phosphatasea anti-alkalinephhosphatase in viral pneumonia children in different areas and years.Results Among 627cases , there were 290 positive cases and 14 cases were infected by 2 viral strains. Three hundred and four positive viral strains,71 cases (23.35%) were RS virus infection, 47 cases (15.46%) were AD virus infection, 74 cases (24.34%) were FLU-A virus infection,50 cases (16.44%) were FLU-B virus infection, 47 cases (15.46%) were PIV1,3 virus infection, and 15 cases (4.93%) were PIV2 virus infection. But in different areas, the kind of the viral strain of the highest infection rate was different. The viral detection rate in autumn and winter was the highest and in summer was the lowest. Conclusions FLU-A virus is the main etiological agent of children viral pneumonia,but the main etiological agent in different areas is different. In autumn and winter, the viral infection rate is high. The chance of viral infection of lower respiratory tract of big children is reduced.

Objectives:To develop a preparative method of continuous acid-urea-polyacrylamide gel electrophoresis (CAU-PAGE) to purify the defensin components from human and rabbit neutrophils (HNP-1～3 and RNP-1～5).Methods:Neutrophils were isolated from human peripheral blood or rabbit artificial aseptic ascites.The components of defensin were extracted by 5% acetic acid directly followed by elution of CAU-PAGE,and purified HNP-1～3 or RNP-1～5 were harvested.Polyacrylamide gel filtration was used as the method for comparison.Results:For each elution circa 1.50 mg of purified HNP or 2.50 mg of RNP were obtained from 5×108 of neutrophils,and their natural biological activity was preserved.Conclusions：CAU-PAGE is a relatively simple,rapid,economical method for purifying cationic peptides as the components of defensin.

Objective To determine the value of 18F-FDG PET-CT in detecting the primary origin of cancer of unknown primary (CUP).Methods A total of 48 patients (age range 41-82 years,mean age of 57±16 years, 20 females) were retrospectively selected. All patients were diagnosed as CUP and were examined by 18F-FDG PET-CT scan.The patients were divided into cervical lymph node metastasis group (28 cases) and extra-cervical lymph node metastasis group (20 cases) according to different metastasis site.Sensitivity of 18F-FDG PET-CT to detect primary tumor site was compared between these two groups.Results 18F-FDG PET-CT detected primary tumors in 32 of 48 patients (66.7 ％), the cervical lymph node metastasis tumors in 22 of 28 patients (78.6 ％), and extra-cervical lymph node metastasis tumors in 10 of 20 patients (50.0 ％).There was significant difference between cervical lymph node metastasis group and extra-cervical lymph node metastasis group (x2 =4.286,P ＜ 0.05).Conclusion 18F-FDG PET-CT has a high sensitivity to detect primary origin of CUP,especially for patients with cervical lymph node metastasis.

Objective To establish a HPLC method for the determination of Hyperoside in Bushen-Yijing wan. Methods The HPLC system consisted of the Agilent HC-C18(4.6 mm×250 mm, 5μm)column was adopted. The mobile phase was consisted of acetonitrile(10)-HK2PO4(90)(0.85 g/L sodium heptanesulfonate,H3PO4 adjusted pH to 4.8), the flow rate was 1.0 ml/min, the column temperature was 30 ℃, and the UV detector was set at 360 nm. Results The linear response range was 3.0~60.0μg/ml(r=0.999 9). The average recovery of hyperoside was 98.2%, and RSD1.53%. Conclusions The method is simple, rapid, accurate and repeatable. It can be applied in determination of Hyperoside in Bushen-Yijing wan.

Gastrointestinal stromal tumors (GISTs) is a subset of mesenchymal tumors and represents the most common mesenchymal neoplasm of gastrointestinal tract.In the last decade,GISTs has become well known because of the effectiveness of imatinib mesylate.The molecular targets for tyrosine kinase receptor inhibitor are not only of importance for the treatment of patients but also useful for the development of a novel drug modalities and new strategies in basic cancer therapy.The improved understanding of the molecular mechanism of GISTs has made its diagnosis standardized.Many multicenter phase Ⅱor phase Ⅲ clinical trials have been completed to establish the role of adjuvant and neoadjuvant therapy.It is important to select the correct management strategy,which is multidisciplinary,integrated,and individualized.This paper provides an overview of the rational treatment of GISTs at present.

In recent years,minimally invasive surgery has become the mainstream trend of modern surgery with the rapid development of endoscopic and laparoscopic techniques.However,there are limitations when either technique is used alone.The laparoscopic and endoscopic cooperative surgery (LECS),which combines the advantages and makes up the deficiencies of these two techniques,has expanded the application field of minimally invasive surgery.Laparoscopic wedge resections are increasingly applied for gastric stromal tumor.Base on clinical experience of 43 patients who underwent laparoscopic wedge resections for surgical treatment of gastric stromal tumor,we conclude that this procedure is feasible and safe.

Objective:To investigate the effects of oxaliplatin (OXA) and teniposide (VM-26) on proliferation and apoptosis of gastric cancer cell line BGC-823.Methods:MTT assay was used to examine the inhibition rate of cell growth when cells were treated at various concentrations of OXA and VM-26 alone or in combination. The apoptosis was examined by flow cytometry (FCM). The protein expression of cell apoptosis associated proteins caspase-9 and livin were examined by immunocytochemistry. Results:OXA or VM-26 effectively inhibited the growth of BGC-823 gastric cancer cells in a concentration-dependent manner at certain range of concentrations. The inhibitory rate of combined treatment with OXA and VM-26 was significantly higher than that of OXA or VM-26 alone (P<0.05). The value of combination index (CI) was 0.46. The rate of apoptosis cells induced by 1.25 μg/mL OXA was 6.13%, 13.86% and 21.48% at 12, 24 and 48 h. The apoptosis rate induced by 0.625 μg/mL VM-26 was 4.60%, 10.72% and 17.07% for 12, 24 and 48 h. In combined treatment group the apoptosis rate was 11.73%, 24.14% and 44.75% at 12, 24 and 48 h, respectively. The difference was significant between combined treatment group and single drug treatment group (P<0.05). Immunnocytochemical analysis showed that the expression of caspase-9 protein was up-regulated after being exposed to OXA (1.250 μg/mL) or OXA plus VM-26 (0.750 μg/mL), while the expression rate of livin protein was down-regulated. There were significant differences among different treatment groups as well as between treatment groups and control group (P<0.05).Conclusion:OXA combined with VM-26 has synergistic effects in inhibiting the growth and inducing apoptosis of gastric cancer BGC-823 cells.