Objective To study the value of CT in evaluating the operable of gastric carcinoma in advanced stage.Methods The plainor contrast-enhanced CT scan was performed in 158 patients with advanced gastric carcinoma before operation.The patients were dividedinto "operable"group and"inoperable"group based on CT appearances with blind method,and CT features were analysed comparatively with operative findings.Results Of 102 patients in the operable group,97 cases were resected(95.1%).Of 56 cases in the inoperable group,50 underwent a laparotomy and in only 6 cases the tumors were resected.There was significant difference between the two groups(P

Objective To investigate the proliferation and phenotypes of peripheral mononuclear cells (PMNC) stimulated by recombinant human RANTES (rhRANTES) and the mechanisms involved.Methods PMNC was stimulated by various concentrations of rhRANTES and/or anti-CD3 mAb and intervened by PDTC and CTLA4Ig. Scintillation counter was used to count the cpm of proliferation cells and flow cytometry was used to detect the phenotypes of lymphocytes.Results rhRANTES was capable of directly stimulating purified human PMNC proliferation and two peaks occurred with rhRANTES concentration of 100 ng/ml and 5000 ng/ml respectively. The proliferation of PMNC stimulated by rhRNATES was significantly higher than that in the presence of anti-CD3mAb (P

Objective To investigate the implication of lymphotactin (LTN) mRNA expression in cardiac allografts and the effect of cyclosporin A (CsA).Methods Three groups of rats underwent the heterotopic cardiac transplantation: isograft group (group A), untreated group (group B) and CsA treated group (group C). The LTN mRNA expression was detected by one step RT PCR method. Results The expression of LTN mRNA was not detected in both isografts and normal hearts. The changes of LTN mRNA expression were correlated with the process of acute allograft rejection. The peak of elevated level of the LTN mRNA expression appeared in the 5th day after transplantation and CsA could delay the peak and downregulate its expression. The peak level of LTN mRNA expression in group C was significantly lower than that in group B ( P

Objective To investigate the expression and clinical implication of CC chemokines and receptor in long surviving kidney grafted patients of different immune states. Methods 73 cases of recipients surviving more than 3 years were divided into three groups: control group of normal renal function(C group,n=32), group under low dosage of immunosuppressants(L group,n=20) and group with chronic allograft dysfounction(D group,n=21). The plasma RANTES、MCP 1 and MIP 1?were detected by sandwich ELISA.The expression of CCR5 was determined by flow cytometry(FACS). Results Concentrations of RANTES and MIP 1? as well as expression rate of CCR5 in L group were lower than those of C group ( P 0.05).Plasma level of MCP 1 was significantly higher in group D than that in group C( P 0.05). Conclusions Expression of CC chemokines and receptor closely correlated with the immune state of renal transplant recipients and could be valuable to estimate and monitor the immune state of patients.

Objective To compare the effects of tibolone and cisapride on gastrointestinal motility in menopausal patients with functional dyspepsia (MPFD).Methods Fifty-three MPFD and 31 MPFD complicated with bile reflux were divided into 3 groups randomly.They were treated with tibolone,cisapride and both drugs for 4 weeks,respectively.The gastric emptying,serum motilin and intragastric bile were measured before and after the treatment.Results The 30-min gastric emptying rates of all groups were significantly improved (P

The left ventricular (LV) myocardial remodeling process that occurs in various settings of congestive heart failure (CHF) had historically been attributed to intrinsic changes in the cardiac myocyte. However, it is now recognized that important changes also occur within the extracellular matrix (ECM) of the myocardium, contributing to the remodeling process. Matrix metalloproteinases are a family of proteolytic enzymes responsible for myocardial extracellular protein degradation.Several MMP species identified within the human myocardium may be dysregulated in congestive heart failure (CHF). The purpose of the present review is to present a brief overview of the matrix metalloproteinases (MMPs) within the myocardium that likely contributes to myocardial remodeling,to examine the results from basic studies to explore relationship with respect to MMPs activation and congestive heart failure.-

Objective To investigate drug-resistance and the genotypes of extended-spectrum ? lactamases (ESBLs) producers in Beijing Tiantan Hospital and Beijing Chaoyang Hospital. Methods Standard agar dilution method, transconjugation test, isoelectric focusing, DNA sequencing were preformed in 52 clinical isolates of Escherichia coli and Klebsiella pneumoniae. Results ESBLs producers were resistant to many antibiotics. DNA sequencing of amplicons of 52 strains revealed that ESBLs-encoded genes were CTX-M-14, 22,24 and SHV-2,12,respectively. Conclusions We should pay great attention to detect ESBLs producers and investigate their genotypes, so that we could prevent regional prevalence of ESBLs producers and utilize antibiotics reasonably.

Objective To study the effects of knock down midkine(MK)by siRNA on chemosinsitivity in bladder cancer cells. Methods Three MK siRNAs were designed and constructed. After transfected with MK siRNA or scrambled siRNA for different time, cultured cells were harvested to carry on the next experiments. Expression of MK was determined by real-time RT-PCR and western blot, and apoptosis were evaluated by caspase-3 activity and TUNEL assay. MTT was performed to examine the inhibition effect of Paclitaxel (PTX) on cells. Results MK siRNA could down-regulate the MK expression in a dose- and time-dependent manner. The MTT results showed that the inhibit rates were (18.21±0.36)%, (18.19±0.29)%, (17.89±0.33)%, (1.86±0.52)%, (32.56±0.53) %, (53. 83±0.38) % and (78. 95±0.55) % in different groups PTX alone(0.2μmol/L), ConA +PTX(0.2 μmol/L), Con-B +PTX(0.2 μmol/L), siRNA alone(12. 50 nmol/L), siRNA(3. 125nmol/L) + PTX (0. 2 μmol/L), siRNA (6. 25 nmol/L) + PTX (0. 2 μmol/L) and siRNA (12. 50nmol/L)+PTX(0.2 μmol/L), respectively. The TUNEL results showed that apoptosis index was (1.81 ±0. 36)%, (1. 89±0. 38)%, (5. 56±0. 58)%, (9. 68±0.55)% and (15. 25±0.56)% in different groups (Con-A, Con-B, siRNA (3. 125 nmol/L), siRNA (6. 25 nmol/L) and siRNA ( 12. 5nmol/L), respectively. The activity of caspase-3 increased significantly in transefected cells with a dose-and time-dependent manner. Conclusion MK siRNA could sensitize human bladder cancer cells to chemotherapy which might be through the apotosis.

It is usually a challenge to repair the abdominal wall defect to general surgeons. With developing of materials science, the use of mesh provides a novel method of primary closure of abdominal wall defects in this set-ting. Recently , biological mesh has been reported to reconstruct abdominal wall successfully. This review is to in-troduce the recent status and progress on its biological characteristics,animal experiments and clinical Study.

Objective Extrapolate the relationships between the width of circumferential rectal mucosa re-sected and the method of either performing single purse-string or performing double purse-string during per-forming the procedure for prolapse and hemorrhoids (PPH), and to assess the impact of both the level of sta-ple line and the width of rectal mucosa resected on clinical outcomes after stapled hemorrhoidpexy. Meth-ods Twenty-eight adult patients with Ⅲ-Ⅳ hemorrhoids were assigned to two groups: 15 patients using sin-gle pursestring and the remaining 13 patients using double purse-string. The mucosal width of doughtnuts of both groups were measured and the data recorded. The doughtnuts resected were sent to pathology examina-tion after stapled hemorrhoids pexy to identify whether or not the specimens involved the smoth muscles. The demographic complications (bleeding, postoperative pain, urinary retention, fecal urgency) were compared and statistically analysed between the two groups, respectively. Results There were no statistical differ-ences between the two groups in terms of postoperative short-term results and complication rates, as well as the proportion of involving smooth muscle in specimens(P >0.05). However, when compared the width of doughtnuts resected in single-pursestring group was smaller than that in double-parse-string group (P < 0. 01). Conclusion The single or double-purse-string suture in PPH can control the width of resected rectal mucosa.