Objective To observe the effects of different gastrointestinal reconstruction methods after dis -tal subtotal gastrectomy on nutritional condition and blood glucose in patients with type 2 diabetes ( T2DM) and gastric cancer.Methods 88 patients with T2DM and gastric cancer undergoing radial distal gastrectomy were studied and among them 43 patients had Billroth I gastrointestinal reconstruction , 22 patients had Billroth II gas-trointestinal reconstruction and 23 patients had Roux-en-Y gastrointestinal reconstruction .Body mass index ( BMI) , serum albumin and prealbumin of the 3 groups were measured preoperatively and 1 year after surgery . The patients were followed up .Results There was no significant difference among the 3 groups in preoperative values(P>0.05).One year after surgery, BMI, serum albumin and peralbumin in the 3 groups had different de-grees of reduction , but showed no statistical difference ( P>0.05 ) .The effective rate of diabetes control was 18.60%in Billroth I group , 72.73%in Billroth II group , and 73.91% in Roux-en-Y group and the difference had statistical significance(χ2 =17.390 3,P<0.05).The effective rates of diabetes control in Billroth II group and Roux-en-Y group were higher than that in Billroth I group (χ2 =18.340 9,P<0.05;χ2 =19.480 4,P<0.05), and there was no evident difference between Billroth II group and Roux-en-Y group(χ2 =0.008 1,P=0.928 4).Conclusion Billroth II and Roux-en-Y gastrointestinal reconstruction can improve glycemic metabo-lism of patients with T2DM and gastric cancer without significantly reducing the nutrition status .

Tissue engineering has always been a hot spot in the life science area over the past few years. However, there are some problems, such as the multiplication of seeding cells, the preparation of tissue engineering scaffolds, and the controlled release of drugs from scaffolds and so on. Recently microspheres have been widely used to solve these problems. For example, microspheres are used as microcarriers to culture seeding cells. In addition, microsphers can be either used to prepare engineering scaffolds or directly used as scaffolds. Microspheres can be used to load drugs and control the drug release as well. In this paper the application of microspheres in tissue engineering is reviewed and the up-to-date methods are introduced, including ways of improving performances of microcarriers, preparing scaffolds with microspheres and adding drug-loaded microspheres into scaffolds.

Agarases are glycoside hydrolases.They are grouped into?and?types,which hydrolyze?-1,3 linkages and?-1,4 linkages respectively.The paper is about advance in research of agarase including the research of biology,the classcification,the crystal structure,the catalysis mechanism and application of agarases.

Child ; Gene Rearrangement, T-Lymphocyte ; Humans ; Neoplasm, Residual ; diagnosis ; Polymerase Chain Reaction ; methods ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; diagnosis ; Receptors, Antigen, T-Cell ; genetics

0.10). However, for patients with positive cervical lymph nodes, neck dissection plus radiotherapy resulted in a better local control rate than radiotherapy alone (P

Objective:To investigate the effects of two SNP sites of delta-like ligand protein-1 (DLL1) gene rs2738822 (C>T) and rs9459988 (T>G) and gene expression on bone marrow suppression after neoadjuvant chemotherapy for breast cancer.Methods:Breast cancer patients who received neoadjuvant chemotherapy were selected as study subjects, including 90 patients with severe bone marrow suppression and 72 patients with mild bone marrow suppression. Patient’s demographic characteristics and laboratory test indicators were collected. Two SNP sites of DLL1, rs2738822 and rs9459988, were genotyped by capillary electrophoresis and section analysis (SNaPshot) . The relative mRNA expression of DLL1 gene was detected by quantitative reverse polymerase chain reaction (QRT-PCR) method.Results:For The rs2738822 of DLL1 gene, the genotype distribution difference between severe and mild bone marrow suppression groups was statistically significant ( χ2=8.622, P=0.013) . Compared with CC genotype, CT and TT genotype carriers had a higher risk of severe bone marrow suppression, with an OR value of 2.746 (1.335-6.882) and 3.054 (1.282-8.143) , respectively. The dominant model results showed that TT OR CT carriers had a significantly higher risk of severe bone marrow suppression than THOSE with CC genotype [ OR=2.976 (1.231-4.963) ]. For rs9459988, there was no significant difference in genotype distribution between severe bone marrow suppression group and mild bone marrow suppression group ( χ2=2.149, P=0.342) . Results of the dominant model showed that TG or GG carriers had a significantly higher risk of severe bone marrow suppression than TT carriers, with an OR value of 2.046 (1.053-5.611) . The relative mRNA expression level of DLL1 gene was 1.15±0.23 in patients with severe bone marrow suppression, which was significantly lower than that in patients with mild bone marrow suppression (2.64±0.51) ( t=6.381, P<0.001) . For rs2738822, with the increase of T allele, the relative mRNA expression level of DLL1 gene decreased gradually ( P<0.05) . For rs9459988, the relative mRNA expression level of DLL1 gene in patients with mutant allele G was also significantly lower than that in wild-type CC carriers ( P<0.05) . Conclusion:Mutations of DLL1 genes rs2738822 and rs9459988 are related to the occurrence of severe bone marrow suppression after neoadjuvant chemotherapy for breast cancer, and can be used as a genetic marker to predict the degree of bone marrow suppression after neoadjuvant chemotherapy for breast cancer patients.

BACKGROUND:After acute myocardial infarction(AMI),there is still surviving myocardium in and around the infarcted area,which plays an important role in the occurrence of arrhythmia. OBJECTIVE:To study the alterations of the activities of Na+ channel current(INa),L-calcium current(ICa-L),transient outward K+ current(Ito) and inward rectifying K+ current(IK1) in the cardiomyocytes in the infarcted area after AMI. DESIGN: A randomized controlled study. SETTING:Department of Cardiology,Bethune International Peace Hospital. PARTICIPANTS:The experiment was finished in the Central Laboratory of the Department of Cardiology,Bethune International Peace Hospital from January to June 2003.Twenty New Zealand pure big-ear rabbits were randomly divided into AMI group(n=10) and control group(n=10). INTERVENTIONS:Rabbit AMI models were established by ligation of the left anterior descending coronary artery.The ventricular myocytes were separated with the method of enzymatic dissociation technique,and the changes of the ion currents were recorded with the whole cell patch-clamp techniques. MAIN OUTCOME MEASURES:The changes of INa,ICa-L,Ito and IK1 in the cardiomyocytes taken from the infarcted area of epicardium 24 hours after AMI in both the AMI and control groups. RESULTS:Twenty-four hours after AMI,the peak current densities of INa,ICa-L and IK1 in the AMI group [(28.48± 3.53) pA/pF,n=16;(3.91± 0.95) pA/pF,n=12;(26.93 ± 3.48) pA/pF,n=16]were all significantly reduced as compared with those in the control group [(45.50± 5.33) pA/pF,n=12;(5.58± 1.53) pA/pF,n=10;(34.12± 4.21) pA/pF,n=10] (t=3.026,P< 0.01;t=2.985,P< 0.01;t=2.706,P< 0.05).There was no significant difference in the Ito density between the AMI group and control group (P >0.05). CONCLUSION:The reduce of INa,ICa-L and IK1 caused by AMI can result in the decrease of myocardial conduction velocity,the shortening of action potential-time,abnormal repolarization,which is possibly the ionic mechanism for the reentrant ventricular arrhythmia after AMI.

Objective:To explore the clinical value of chest multi-slice computed tomography angiography (MSCTA) as a preoper-ative examination for lung cancer patients undergoing pulmonary lobectomy. Methods: Sixty lung cancer patients formed the study population and were randomly divided into 2 groups of 30 cases each. In the experimental group, CTA images of the tumors and pulmo-nary artery, bronchial artery, pulmonary vein were acquired, analyzed, and post-processed using VR to determine the anatomical rela-tionship between vessels and tumors. Pulmonary lobectomy followed. Cases in the control group underwent pulmonary lobectomy with-out guidance by chest MSCTA. Operation times and amounts of operative blood loss were compared between the two groups. Results:Significant differences between groups in terms of operation time (study group vs. control group, 199±55.7 vs. 231.5±51.2(min);P=0.02) and amount of operative blood loss (study group vs. control group, 318.33±99.6 vs. 431.7±89.5(mL), P<0.01) were observed. Val-ues of operation time and amount of contrast agents in the study group were consistently lower than those in the control group. Conclu-sion:Chest MSCTA can shorten the operation time and reduce the amount of operative blood loss during pulmonary lobectomy. Thus, the technique has significant clinical value.

Objective To study the effects of up-regulated gene-4 (URG-4) on colon cancer cellproliferation.MethodsColon cancer cell line with high expression of URG-4 was selected.The recombinant URG-4 siRNA retroviral vector was constructed and packaged by PT67 cell,then retroviral particles which can express URG-4 siRNA in mammal cell and its negative control were obtained.Expressions of URG-4 in MKN45,SW480,LoVo,HCT116,HT29 were detected by RT-PCR and Western blot,respectively.Recombinant virus (interference group),original virus (negative control group) and the same amount of PBS (blank group) were used to transfect LoVo cells respectively.Stably transfected cell lines were screened.The growth condition of cell lines in each group was assayed by MTT.All data were analyzed by the one-way analysis of variance and the t test.Results Sequencing results confirmed the successful construction of retroviral which expressed siRNA,the relative expression levels of URG-4 mRNA in MKN45,SW480,LoVo,HCT116,HT29 were 0.58 +0.02,0.63 ±0.03,0.81 ± 0.01,1.01 ± 0.02,0.91 ± 0.04 and the expression levels of URG-4 protein in the 5 cell lines were 0.73 ±0.02,0.85 ± 0.03,1.42 ± 0.01,0.80 ± 0.30,0.80 ± 0.04,respectively.High expression of URG-4 was observed in the LoVo cells.The expression of URG-4 mRNA in the LoVo cells in the interference group was 0.55 ±0.03,which was significantly lower than 1.15 ±0.02 of the negative control group and 1.15 ±0.01 of the blank group ( t =- 5.179,- 9.285,P ＜ 0.05 ).The inhibition rate of URG-4 mRNA in the interference group was 52.6％.The expression of URG-4 protein in the interference group was 0.82 ± 0.05,which was significantly lower than 1.46 ± 0.07 of the negative control group and 1.54 ± 0.04 of the blank group (t =-4.239,-3.704,P＜0.05).The inhibition rate of URG-4 protein in the interference group was 43.6％.The LoVo cells in each group grew exponentially.Compared with the negative control group,the cell growth of the interference group was inhibited during day 3 to day 6,which had statistical significant difference ( t =- 6.436,-6.045,-6.434,-4.285,P＜0.05).ConclusionInterference of the expression of URG-4 can inhibit the growth of LoVo cells.

ObjectiveTo evaluate the clinical value of Young's modulus by supersonic shear wave elastography (SWE) in differential diagnosis of thyroid solid nod1ules.MethodsEighty-three patients with 113 solid nodules were examined by SWE.All the nodules were confirmed by pathology.According to Young's modulus,a receiver operating characteristic (ROC) curve was drawn,and it used to identify the value of optimal operating point for differential diagnosis of thyroid nodules.Results ① The mean of Young's modulus of benign nodules was (23.57 ± 9.35)kPa,which was significantly different from the valve of malignant nodules (43.73 ± 19.82) kPa ( t =6.31,P =0.00).(②) It showed that the optimal operating point of ROC curve as 27.49,with high sensitivity(93.2％),specificity(81.2％) and accuracy (85.8％).The area under ROC curve was 0.91.Conclusions SWE is a newly quantitative technique of ultrasonography,which is helpful to identify and distinguish in the differential diagnosis of thyroid nodules.