Objective To investigate the effect of fluorouracil for injection on methylene tetrahydrofolate reductase ( MTHFR ) , glutathione S-transferase ( GST) and tumor markers in patients with advanced gastric cancer.Methods Forty-eight cases with advanced gastric cancer were selected from August 2013 to August 2014 in the hospital and divided into two groups.The control group (n=24) were treated with capecitabine plan, and the experiment group ( n=24 ) were treated with fluorouracil for injection plan.MTHFR concentration, GST activity and tumor markers [ carbohydrate antigen-199(CA199), carcinoembryonic antigen (CEA), alpha fetoprotein(AFP)] levels were compared before and after treatment.ResuIts Compared with control group, MTHFR concentration of experiment group was higher (P<0.05), GST activity was lower (P<0.05), the tumor markers levels were lower (P<0.05), total effective rate of clinical symptoms was higher [16(66.67) vs.22(91.67), χ2 =4.55, P<0.05], and incidence of adverse reactions was lower [14(58.33) vs.6(25.00), χ2 =5.49, P<0.05].ConcIusion Fluorouracil for injection chemotherapy could increase the serum MTHFR concentration, reduce GST activity, and its clinical curative effect is obvious with less adverse reactions, which has important significance in treatment of patients with advanced gastric cancer.

Dysregulated cell cycle-mediated cell transformation and uncontrolled cell growth are some of the fundamental biolog-ical features of malignant tumors. Thus, understanding the mechanism(s) involved in the cell cycle will facilitate the discovery of the na-ture of tumor initiation and progression as well as the molecular mechanism of tumor malignancy. Consequently, biomarkers and drug targets for early diagnosis and treatment would be obtained. This study was designed to analyze in detail the key regulators of cell cycle and their importance in carcinogenesis and clinical prevention, diagnosis and treatment, and anti-cancer drug discovery. The biological impact of the dysregulated cell cycle on tumor occurrence and malignancy development is systematically described. The theoretical and practical significance of the cell cycle regulation in tumor diagnosis and therapy are also provided.

Objective To investigate the clinical value of single-incision laparoscopic inguinal high ligation in children with recurrent inguinal hernia . Methods Clinical data of 30 pediatric recurrent inguinal hernia cases treated with single-incision laparoscopy in our hospital between January 2011 and February 2016 were analyzed retrospectively .The patients were aged 1-11 years old (mean, 6.1 ±3.3 years old).For indirect inguinal hernia, a non-absorbable suture was placed around the extra-peritoneal space of the inguinal inner ring by means of a needle with a thread hole and a hooked needle under laparoscope , and the hernial sac was highly ligated by knotting the purse string suture .If a direct inguinal hernia was identified , a similar method was used to ligate the hernial sac , and the umbilical artery fold was sutured to the Hesselbach ' s triangle in order to enhance the weak tissue . Results After surgeries, we found 28 cases were recurrent indirect inguinal hernia (4 cases with contralateral concealed hernia ), and the other 2 cases were direct inguinal hernia .The operation time ranged from 12 to 45 min (mean, 21.4 ±8.2 min).All th cases recovered with inconspicuous scars , and no recurrence or complications were found during a follow-up for 2-53 months ( mean, 23.9 ±12.5 months). Conclusions Single-incision laparoscopic inguinal high ligation is a safe and effective procedure for children with recurrent inguinal hernia .This procedure does not cause obvious scars for patients , and can diagnose and treat the occult hernia and direct hernia at the same time .

Objective To explore the effect and mechanism of fluvastatin preventing and curing restenosis. Methods 48 rabbits were randomly divided into 3 groups. In control group, rabbits were given basic food. In balloon injury group, rabbits were given basic food and balloon injury of general artery on right neck. In fluvastatin balloon group, rabbits were given basic food,ballon injury of general artery and 10mg?kg -1 ?d -1 fluvastatin. The expression of MMP-9 and TIMP-2 of mRNA was detected at 3, 7, 14 and 30 days after injury respectively by method of in site hybridization. Results There was little expression of MMP-9 and TIMP-2 mRNA in control group, and the expression of MMP-9 and TIMP-2 mRNA in middle membrane of blood vessels began at 3 days after blood injury, and reached maximum at 7 days after injury. There was a little expression of MMP-9 and TIMP mRNA in inner membrane of blood vessels at 14 and 30 days after injury, and MMP-9 expression significantly decreased after the fluvastatin interference(P

With the deepening of reform and opening-up and the change in management ideas, more and more attention will be attached to the job satisfaction of doctors. The paper expounds the concept of job satisfaction, the theories related to job satisfaction, the status of research on the job satisfaction of clinical doctors both at home and abroad, and the tools for measuring job satisfaction. It also analyzes the significance of research on the job satisfaction of chnical doctors.

Objective To investigate plasma homocystein (Hcy) level in cardiac transplant patients.Methods Fourteen cases of heart transplant patients were recruited in this study. Plasma Hcy levels were measured by using high-performance liquid chromatography with fluorescence detection and flow-mediated dilatation in brachial arteries detected with high-resolution ultrasound in all patients, while coronary artery angiography were performed in 7 patients.Results In 2 cases of heart transplant who had single coronary artery stenosis, the plasma Hcy levels were above 12 ?mol/L. The average plasma Hcy levels in heart transplant patients were higher than in health volunteers [( 13.47? 2.78) ?mol/L vs (9.26? 3.57) ?mol/L], and flow-mediated dilatation in brachial arteries of heart transplant patients was lower than that of health volunteers [( 8.2? 3.7) % vs ( 12.5? 1.6) %]. There was a linear correlation between levels of plasma Hcy and flow-mediated dilatation (r= -0.804). Conclusion Endothelial dysfunction in the heart transplant patents might be contributed to hyperhomocysteinemia which may be potential cause of transplant coronary artery disease.

Objective To investigate the feasibility of laparoscopy assisted Meckel’s diverticulum resection in children. Methods Meckel’s diverticulum resection was performed under laparoscope in 12 children from October 2000 to April 2002.Two 3 mm incisions were made on the McBurney point and the midpoint between the umbilicus and the pubis,respectively.Three 3 mm trocar were introduced.When the diverticulum was found,the incision was prolonged to 2 cm long along the inferior border of the umbilicus.The lesion was removed externally and the intestine was anastomosed. Results All operations were completed smoothly under laparoscope. The intraoperative blood loss was 2～3 ml and the operation time was 1 2～2 5 h.The diverticulum was 1 cm?2 cm～3 cm?4 cm in size.The patients were dismissed 5～7 days after surgery,without obvious scar formation. Conclusions Laparoscopic Meckel’s diverticulum resection is feasible, with the advantages of the minimal invasion, rapid recovery and unobvious scars.

Objective To discuss the blood substitutes during the perioperative period for hemophilic children with surgical disease as well as the coping strategies to its postoperative complications.Methods A retrospective study between 2003 and 2013 from one our centre identified a total of 41 perations performed in haemophiliac patients.33 patients were diagnosed with haemophilia A,among whom 10 were severe cases,13 moderate cases and 8 mild cases.8 patients were diagnosed with haemophilia B,among whom 2 were severe cases and 6 were mild cases.Different kinds of operation were required for each case.Results According to the monitoring of the coagulation tests PT and APTT before and after the operation respectively,after the use of the blood substitutes such as FV Ⅲ,PPSB and fresh frozen plasma,38 patients underwent surgical treatment successfully and had full recovery without any surgical complications,1 patient was dead,1 suffered intraperitoneal hemorrhage and 1 had delayed wound healing.Conclusion Full preparation and thorough plan before the operations,combined with appropriate blood substitutes can effectively reduce postoperative bleeding for hemophilic children.

Objective To evaluate the clinical application of implantation of totally implantable venous access port (TIVAP) via the internal jugular vein (IJV) guided by ultrasonography in infants.Methods The clinical data of 446 sick infants,who received TIVAP at the Affiliated Shanghai Children's Medical Center,School of Medicine,Shanghai Jiaotong University,China (single center) during the period from January 2009 to July 2016,were retrospectively analyzed.The time spent on surgery,the success rate of first puncturing of IJV and the incidence of puncture-related complications were recorded,and the results were compared between traditional IJV blind puncture group and ultrasound-guided IJV puncture group.Results Of the 446 sick infants,traditional IJV blind puncture was employed in 265 and ultrasound-guided IJV puncture was adopted in 181.In traditional IJV blind puncture group,the mean time spent on surgery was 7.6 min,the success rate of first puncturing of IJV was 75.85％ (201/265),and the incidence of puncturerelated complications was 5.66％ (15/265).In ultrasound-guided IJV puncture group,the mean time spent on surgery was 4.2 min,the success rate of first puncturing of IJV was 97.24％(176/181),and the incidence of puncture-related complications was 1.70％ (3/181).Conclusion For the performance of TIVAP implantation in sick infants,the use of ultrasound-guided IJV puncture technique can shorten the operation time,improve the success rate of first puncturing,and reduce the incidence of puncture-related complications.Therefore,ultrasound-guided IJV puncture is a safe,effective,simple and feasible technique.This technique is worthy of clinical promotion.

Objective To develop prototype foamy virus (PFV) detection method by loop-mediated isothermal amplification. Methods Three pairs of primers targeting core region of PFV integrase were designed in this study and Bst DNA polymerase was used to amplify target sequence at 63℃. The system was established with all the conditions optimized. Results The method was established with the plasmid containing target sequence as the template. This method could specifically detect PFV infectious clone, no crossreaction was observed with human immunodeficieney virus infectious clone, bovine immunodefieiency virus infectious clone and bovine foamy virus infectious clone as templates. The detection capability of this system was 50 copy, one order more sensitive than PCR. The amplification could be finished in 15 min and human genomic DNA did not adversely affect the amplification efficiency. Conclusion The PFV detection method by loop-mediated isothermal amplification was established and it had potential usefulness in PFV detection.