Objective To evaluate the therapeutic efficiency and side effect of concurrent radiotherapy and weekly chemotherapy with low-dose eisplatin(DDP) and 5-fluorouracil(5-FU) for advanced cervical canc-er. Methods 73 patients with advanced cervical cancer were randomized into two groups: 37 cases in the chemo-radiotherapy group received radiotherapy combined with DDP 40 mg and 5-FU 500 mg weekly for 6-7 weeks. 36 cases in the only radiotherapy group received radiotherapy alone. Radiotherapy was given with conven-tional fraction,the total tumor dose was 50 Gy. Results The rate of overall response and three-year survival and local recurrenc and distant metastasis for the chemo-radiotherapy group and the only radiotherapy group were 97.30%, 89. 19%, 8. 11% and 10. 81%, and those for the only radiotherapy group were 77.78%,66. 67% ,30.56% and 33.33%. The difference of the four groups was statistically significant ( P <0. 05). The rate of bone marrow inhibition and reaction of digestive tract in chemo-radiotherapy group were higher than those in simple radiotherapy group, but most reactions were grade 1 and grade 2, without statistically significant dife-renee between two groups. Conclusion Concurrent radiotherapy and weekly chemotherapy with low-dose cis-platin and 5-fluorouracil for advanced cervical cancer can significantly improve local control rate and survival rate, and have slight side effects.

Objective To investigate the effect of ?,?-carotene in enhancing the function of anti-oxidative damage in osteoblasts.Methods M3T3-E1 osteoblasts were randomly divided in five groups: control group,model group,and ?,?-carotene group [low-dose(1?10-8mol/L),medium-dose(1?10-7mol/L),high-dose(1?10-6mol/L)].The activity of cells,superoxide dismutase(SOD),the content of reactive oxygen species(ROS),lipid oxygen(LPO),and membrane fluidity were tested and compared. Results Compared with those in ?,?-carotene groups,the activity of cells,SOD activity and membrane fluidity in the model group were significantly decreased(P

BACKGROUND:Electromagnetic fields can cause changes of the body,especially the nervous system.Effect of pulsed electromagnetic fields(PEMFs)on neural stem cells has been detected.OBJECTIVE:To investigate the effect of prenatal pulsed electromagnetic fields(PPEMFs)on neural stem cell proliferation and nestin protein expression in the hippocampus of rat offspdng.METHODS:Sprague Dawley female rats weighing 240-260 g were included and randomly divided into two groups:control and PPEMFs.Rats from the control group were given no interventions.Rats from the PPEMFs group were given PEMFs stress at gestational days 14-20.Each stress was given three times daily for 10 minutes.The male and female offspring rats were sacrificed at 1 month of age and their brains were sectioned to determine the expression of nestin protein and Brdu-positive cells in the hippocampus by immunohistochemistry.RESULTS:The expression of nestin-and Brdu-positive cells in the hippocampus of female and male PEMFS offspring were significantly higher compared with the control group(P<0.001),and there was a significant difference between female and male offspring(P<0.001).The nestin-and Brdu-positive cells in female offspring outnumbered those in male offspring(P<0.001);however,there was no significant difference between female and male offspring in the control group(P>0.05).CONCLUSION:PPEMFs can increase the number and proliferative capability of the neural stem cells in offspring.It may be a pdmary stage of the cascade reaction of the body to the brain damage caused by PPEMFs stress.

ObjectiveTo investigate rational surgical approaches for Siewert type Ⅰ adenocarcinoma of the esophagogastric junction (AEG),and analyze the prognostic factors.MethodsThe clinical data of 103 patients with Siewert type Ⅰ AEG who were admitted to the Renji Hospital from January 2005 to December 2009 were retrospectively analyzed.All patients were divided into transthoracic approach group (61 patients) and thoracoabdominal approach group (42 patients).The incidences of numbers of lymph node dissected and postoperative complications of the 2 groups were compared using the chi-square test,Fisher exact probability or the t test.The survival curve was drawn by the Kaplan-Meier method and the survival was analyzed using the Log-rank test.Prognostic factors were analyzed using the one-way analysis of variance and Cox regression model.ResultsNo perioperative death was observed in the 2 groups.There were significant differences in the number of lymph node dissected and number of metastatic lymph node between the 2 groups (t =2.18,2.29,P ＜ 0.05 ).There was no significant difference in splenic injury between the 2 groups (P ＞ 0.05 ).There were no significant differences in postoperative bleeding,anastomotic fistula and stricture,esophagogastric reflux,pulmonary infection and esteomyelitis between the 2 groups (x2 =0.07,0.94,0.22,1.41,0.17,P＞0.05).Of the 103 patients,97(94.2％) were followed up.The mean postoperative survival time was 26 months.The median survival time was 26 months,and the 3-yearsurvival rate was 35.9％.The 3-year survival rates of transthoracic approach group and thoracoabdominal approach group were 32.8％ and 40.2％,with no significant difference between the 2 groups ( x2 =0.37,P ＞ 0.05).The results of univariate analysis showed that radical or palliative resection,TNM stage,lymph node metastasis stage,tumor diameter and metastasis rate,degree of radical resection were independent factors influencing the prognosis of patients with Siewert type Ⅰ AEG (x2 =21.07,26.04,22.42,6.26,32.20,20.80,P＜0.05).The results of multivariate analysis showed that degree of TNM stage,lymph node metastasis rate and radical resection were independent factors influencing the prognosis of patients ( Wald =12.01,8.75,10.03,P ＜ 0.05 ).Conclusions Thoracoabdominal approach is a reasonable selection for patients with Siewert type I AEG.Degree of TNM stage,lymph node metastasis rate and radical resection were independent risk factors influencing the prognosis of patients.

To develop different methods for determining siRNA content and the entrapment efficiency of siRNA loaded liposomes, SYBR Gold electrophoresis method and Ribogreen fluorospectrophotometry method were used respectively. SYBR Gold electrophoresis method has a good linear relation in a range at 0.2-2.0 micromol x L(-1) (R = 0.9930), and the recovery at the high, middle and low concentrations were 96.35%, 96.92%, and 100.74%, respectively (n = 3). The intra-day and inter-day RSD were far below 5% (n = 5). Ribogreen fluorospectrophotometry method has a good linear relation in a range at 10-50 nmol x L(-1) (R = 0.9971), and the recovery at the high, middle and low concentrations were 98.22%, 99.88% and 99.64%, respectively (n = 3). The intra-day and inter-day RSD were far below 5% (n = 5). The content and the entrapment efficiency of three batches of siRNA cationic liposomes were 98.52%, 97.85% and 99.20%, 96.45%, respectively, with these two methods. And there is no significant difference by ANOVA. Both of the two methods are accurate, sensitive, convenient method for determination of the siRNA content and the entrapment efficiency of siRNA loaded cationic liposomes.
Drug Carriers ; Drug Delivery Systems ; Electrophoresis ; Liposomes ; chemistry ; RNA, Small Interfering ; analysis ; Spectrometry, Fluorescence

ObjectiveTo investigate the effect of resveratrol on the expressions of E-selectin and monocyte chemoattractant protein-1 (MCP-1) in activated endothelial cells.Methods After being pretreated with resveratrol followed by tumor necrosis factor-α (TNF-α) stimulation, human umbilical vein endothelial cells (HUVEC) were randomly divided into three groups: TNF group,resveratrol+TNF-α group and control group. The expression of E-selectin molecule on the surface of HUVEC was detected by flow cytometric analysis and the mRNA expressions of E-selectin and MCP -1 were determined by semiquantitative RT-PCR. ResultsTNF-α induced the expression of E-selectin and MCP-I of HUVEC.Resveratrol (10 μmol/L) inhibited E-selectin expression.The positive cells of E-selectin in TNF group, resveratrol + TNF-α group and control group were(47.84±3.2)%, (15.3±1.7)% and (3.74±1.6)%, respectively, and the differences among the three groups were statistically significant (P<0.05). Conclusions Resveratrol may contribute to the anti-atherosclerotic effect by inhibiting the expression of E-seleetin and MCP-1 of HUVEC.

A fusion protein of glucagons-like peptide-1 and human serum albumin (GLP-1/HSA) was expressed and secreted into the fermentation broth with recombinant Pichia pastoris. The productivity of expressed GLP-1/HSA could reach 63.6mg/L in 10L fermentor. After concentrated with hollow-fiber ultrafiltration membrane, GLP-1/HSA was purified from fermentation broth by hydrophobic chromatography, negative ion exchange chromatography and gel filtration chromatography in turn. The HPLC analysis showed that the purified GLP-1/HSA had an overall purity of 95.8%. Furthermore, the analysis of in vivo activity indicated that GLP-1/HSA had the bioactivity of native GLP-1, and could significantly reduce blood glucose level 4h after intraperitoneal administration. It was concluded that a great deal of GLP-1/HSA with higher purity could be harvested by Pichia pastoris expression system and the established purification methods. Preliminary studies show a new potential for developing the long-acting GLP-1 analogs for clinical applications.

70 bpm during scan),the proportion of segments that could not be assessed because of motion artifact were 0.1%(1/759),1.1%(7/649),2.5% (10/407),42.6%(103/242),and 75.5%(108/143),respectively.With conventional selective coronary angiography as the golden standard,the sensitivity,specificity,positive and negative prediction values to detect≥50% stenotic lesions in the assessable segments were 79.2%,96.0%,83.8%,and 94.6%,respectively.There was a significant correlation between the number of segments per patient not assessable because of motion artifact and heart rate during the scan(r=0.655,P=0.000).Conclusion MSCT is capable of achieving high accuracy for detection of coronary artery stenosis,and is a reliable technique to diagnose coronary artery disease.

Background Resveratrol has been unanimously recognized as an cardiovascular protective substance in red wine. It has been speculated that the anti-atherosclerosis effect of resveratrol is ascribed to its powerful anti-inflammatory effect. Objective To investigate the effects of resveratrol on injured human umbilical veno-endothelial cells (HUVEC) and the reactive oxygen species(ROS) production induced by TNF-? or soluble CD40L (sCD40L). Methods Cultured HUVEC were pre-incubated with resveratrol(1-50 ?mol/L) for 2 hours and then treated with TNF-?(10 ?g/L) or sCD40L?(10 ?g/L) for another 4 hours. MTT assay was used to detect proliterative activity of HUVEC. Immunofluorescence microscopy was used for determination of ROS expression. Results Both TNF-? and sCD40L impaired HUVEC proliferation (-32.7% and -26% vs control,P