Objective To summarize our preliminary experience and evaluate the clinical value of laparoscope diagnosis and treatment for annular pancreas in neonates.Methods A retrospective review of laparoscope diagnosis and treatment for annular pancreas in 9 children from September 2009 to January 2013 was performed.Among them,5 were male,4 were female.The age was ranging from 1 to 13 d.A lowerpressure pneumoperitoneum of 5 ～ 8 mm Hg (1 mm Hg =0.133 kPa) was used.Eight cases of diamond duodenal anastomosis were performed under laparoscope after the diagnosis was established,and 1 case underwent procedure through slightly enlarged umbilical port site.Results Eight cases of diamond duodenal anastomosis were performed under laparoscope,and the operation time was 80 ～ 140 min (mean 105 min),in 1 case it was performed through umbilical port incision,the operation time was 64 min,and the length of incision was about 2.5 cm.Feedings were started at postoperative day 4 to 7 (mean 5 d),and patients were discharged at postoperative day 8 to 14 (mean 10 d).The cases were followed-up for 3 ～ 20 months (mean 6.7 months),and I case complicated with anal atresia died of pneumonia 6 months later.Other cases were uneventfully recovered and symptoms were alleviated with normal gastroenterological function,no preoperative symptoms recurred,and the nutrition and growth status was excellent.Conclusions Annular pancreas can be diagnosed through laparoscopy.Laparoscope diagnosis and treatment for annular pancreas has the advantages of small incision,micro-invasion and faster recovery,can be safely performed in neonatal period.

Objective:To observate immunologic response of immunized mice by the vaccine pcIL-18-MAGE.Methods:Abundant plasmids were extracted and immunized mice,two booster injection were carried out at ten days intervals.Seven days after the third immunization,serum antibody against MAGE-1 and T cell subgroup were detected by FCM,and CTL killing activity were assayed through MTT.Results:About serum antibody against MAGE-1 and T cell subgroup,recombinant plasmids groups were all higher than the vacant plasmid pcDNA3 group(P

Objective:To observe lethal effect on liver cancer cells by the DCs transfected with recombinant plasmid pchIL -18-MAGE.Methods:Cultivate dendritic cells in vitro ,and recombinant plasmid pchIL-18-MAGE was constructed which was transfected into DCs.Expression of IL-18 and MAGE-1 on the transfected DCs were detected by RT-PCR and Western blot.The diversity of DCs phenotypes after transfect were analyzed by flow cytometry.Different killing effects to the target cells by lymphocytes which were stimulated by DC and those by non-transfected DC were detected.IFN-γin the cellular supernatant of the transfected DCs was inspected by ELISA.Results:pchIL-18-MAGE transfected DCs expressed higher level of CD 83,CD1a,CD86,CD80,HLA-DR,and expressed as a mature DC phenotype.pchIL-18-MAGE group′s killing activity was the highest ( P<0.05 ) .Conclusion: The DC vaccine pchlL-18-MAGE can induce better killing effect compared with other experimental groups.

Objective:To investigate the expression of microRNA-199a/b-3p (miR-199a/b-3p) in hepatocellular carcinoma ( HCC) tissues,and to explore the relationship with clinical outcomes. Methods: Real time quantitative PCR technique was used to measure the expression of miRNA-199a/b-3p in HCC tissues. The correlation between miR-199a/b-3p expression and the clinic pathological features of patients were analyzed. Results: Comparing with adjacent control, miRNA-199a/b-3p presented lower expressions in HCC tissues (P<0. 05);lower miR-199a/b-3p was found correlated with metastasis and poor survival. Conclusion:MiR-199a/b-3p take a crucial role in HCC metastasis and recurrence.

Objective:To analyze the expression levels of serum microRNA-199a/b-3p ( miR-199-3p) in hepatocellular carcinoma (HCC) patients and to explore whether miR-199a/b-3p could be a novel biomarker of early HCC.Methods: Patients with normal liver,liver cirrhosis and early HCC in clinic were included in this study.Blood samples of the patients were collected for analy-sis.Real time quantitative PCR technique was used to measure the expression level of serum miRNA-199a/b-3p.The AFP expression was got from clinical data.Results: Comparing with normal liver and liver cirrhosis patients, miRNA-199a/b-3p presented lower expressions in early HCC patients (P<0.05);the accuracy and positive rate of serum miR-199a/b-3p detection in cirrhosis and HCC were better than AFP detection.Conclusion:Data indicated that miRNA-199a/b-3p had diagnostic value for indicating liver cirrhosis and early HCC.

Objective:To observe the inhibitory effect of haploid vaccine pcDNA-CEA625-667 and three tandem repeats of minigene DNA vaccine pcDNA-triCEA625-667 derived from CEA gene on tumor in mice bearing tumor and the changes of survival time. Methods:The experimental animal model of mouse liver cell carcinoma was established and the mice were immunized with pcDNA-CEA625-667 and three series of DNA vaccine. Some of the mice were treated with normal saline as control group. The growth curve of tumor growth curve was recorded and the effect of vaccine on the survival time of tumor bearing mice was observed. Results:Compared with the normal saline control group,the two vaccines were able to significantly inhibit the tumor size and growth rate ( P<0. 01 ) of CEA positive tumor bearing mice,the inhibition of pcDNA-triCEA625-667 vaccine group was significantly better than the pcDNA-CEA625-667 vaccine group (P<0. 01),while the two were not inhibited tumor growth in CEA negative tumor bearing mice. The average survival time of the pcDNA-CEA625-667 vaccine group was(48. 50±6. 73)d,and there was significant difference (P<0. 01) compared with the saline control group ( 39. 00 ± 6. 64 ) d. The survival time ( 48. 50 ± 6. 73 ) d of the pcDNA-triCEA625-667 vaccine group was significantly higher than that of the normal saline control group and the pcDNA-CEA625-667 vaccine group (P<0. 01). The survival time of CEA negative tumor bearing mice could not be prolonged in the two groups. Conclusion:Either the haploid or the three series of the DNA vaccine,were able to significantly inhibit tumor growth rate (P<0. 01) and significantly prolong the survival time (P<0. 01) of CEA positive tumor bearing mice,but they had no therapeutic effect on CEA negative tumor bearing mice.

Objective:To observe the immunological activity of haploid vaccine and three tandem repeats of minigene DNA vac -cine derived from Carcinoembryonic Antigen (CEA) gene.Methods:The immunoreaction was induced by intramuscular injection with pc-DNA3.0,pcDNA-CEA625-667 and pcDNA-triCEA625-667 in BALB/c.Four weeks after injection,the spleen cells and serum were separa-ted respectively from the mice for the in vitro assessment .Changes of the T lymphocytes subset was analyzed by flow cytometry .Lymph proliferation responses were tested by 3 H-TdR incorporation ,IFN-γ,IL-4 and GM-CSF in their cultural supernatants were detected with ELISA and seral IgG antibody against CEA were detected with Western blot and ELISA .Results:The difference of the ratio of CD 4+/CD8+of the mice immuned by pc-DNA3.0,pcDNA-CEA625-667 or pcDNA-triCEA625-667 was not significant.Lymph proliferation responses were more significant in the mice immuned by pcDNA-CEA625-667 and pcDNA-triCEA625-667 in a shorter time by contrast with na ?ve mice.Low tilter IgG antibody against CEA was detected in the antiserum of the mice immuned by repeats of minigene DNA vaccine , which suggested the activation of helper T-cell.ELISA showed that the level of IFNγin the 3 days culture of the splenocytes was rela-tively higher in the groups of minigene DNA vaccination than in the control groups ,while IL-4 expression was absent in all groups .The immune response level elicited by three tandem repeats of minigene DNA vaccine pcDNA -triCEA625-667 was superior to that elicited by pcDNA-CEA625-667 ,which showed that any immunogenic inadequacies in minigene presentation can be rectified by linking itself in a string-of-beads vaccine.Conclusion:The haploid vaccine and three tandem repeats of minigene DNA vaccine derived from CEA geneboth can not change the ratio of CD 4+/CD8+but can induce the activation of helper T-cell and skew T -cells toward Th -1 response.The immune response level elicited by three tandem repeats of minigene DNA vaccine was superior to thatelicited by haploid vaccine .

Objective:To observe the specific killing effect on tumor cells of the spleen cells in mice immunized with three tandem repeats of CEA minigene DNA vaccine pcDNA-triCEA625-667 and to evaluate the safety of the vaccine. Methods: The BALB/c mice were randomly divided into blank vector group ( pcDNA3. 0 ) , haploid vaccine group ( pcDNA-CEA625-667 ) and tandem repeats vaccine group (pcDNA-triCEA625-667). The mice received a total of 4 intramuscular immunization every 10 days once. The changes of body weight,survival state were recorded and the levels of serum ALT and serum creatinine were detected. The specific CTL killing activity of spleen cells in accinated mice on mouse hepatoma cells(H22-CEA+),gastric cancer cells(MFC-CEA+),colorectal cancer cells ( CT26-CEA+) with high expression of CEA and mouse hepatoma cells ( H22-CEA-) without expression of CEA was detected. Results:The two vaccines had strong killing activity on CEA positive liver cancer,gastric cancer and colon cancer cells,and the difference was statistically significant ( P<0. 01 ) compared with the PcDNA3. 0 group. And they had almost no effect on CEA negative tumor cells (H22-CEA-). The killing activity on liver cancer cell(H22-CEA+) and gastric cancer cell(MFC-CEA+) induced by pcDNA-triCEA625-667 was stronger than that induced by pcDNA-triCEA625-667(P<0. 05). The survival status,change of body weight and function of liver and kidney of the mice were not affected by the vaccine. Conclusion:There was no adverse reaction in the course of vaccine immunization. The minigene DNA vaccine derived from CEA can induce tumor specific CTL effect and the immune response level elicited by three tandem repeats of minigene DNA vaccine was superior to that elicited by haploid vaccine.

Objective:To observe the effect of tannic acid on renal morphology and function of diabetes mellitus model rats ,and to explore the mechanism of improving effect of tannic acid from oxidative stress , nitrosative stress angle.Methods: 8 rats were randomly selected from 68 6-week-old male Wistar rats as normal control group and the remaining 60 rats accepted high-sugar and high-fat diet for 4 weeks, then were injected streptozotocin ( STZ, 52 mg/kg ) intraperitoneally in order to manufacture a diabetic rat model.Further the diabetic rats were randomly divided into model group ,aminoguanidine group ,low-dose of tannic acid group and high dose of tannic acid group.The rats in aminoguanidine group were injected aminoguanidine [AG,40 mg/(kg· d)] intraperitoneally, those in low-dose of tannic acid group were injected tannic acid [TA,20 mg/(kg· d)] and those in high-dose of tannic acid group were injected tannic acid [TA,30 mg/(kg· d)].The rats in normal control group and model group were injected normal saline [NS, 30 mg/(kg· d)] and all rats were sacrificed and tissues were derived at the end of the week 10.Morphologic changes of kidney in diabetic rats were observed by HE staining and correlative biochemical indices of renal function were detected by biochemical analyzer.8-hydroxy deoxyguanosine (8-OHdG) and 3-nitrotyrosine (3-NT) content of renal tissue in rats in different groups were detected by ELISA method.Mesangial cells cultured in vitro were treated with high concentration of glucose (30 mmol/L) and AGEs (250 mg/L) and at the same time with different concentration of tannic acid (10,20,40 and 80μmol/L) on the basis of setting corre-sponding control group.The contents of 8-OHdG and 3-NT in the culture supernatant were measured by ELISA method after 48 hours.Results:Tannic acid can effectively improve the renal pathological changes and improve renal function of diabetic rats .The contents of 8-OHdG and 3-NT in kidney tissue homogenate of diabetic rats and in the supernatant of GMC cultured with high glucose or AGEs were all significantly increased and can be reduced by tannic acid.Conclusion:Tannic acid improving the structure and function damage of kidney in diabetic rats might be achieved by oxidative stress and nitrosative stress mechanism .

Objective:To research rmIL-18 in vitro culture system CCs induce tumor-specific cytotoxic T lymphocytes CTL and anti-tumor effect in mice.Methods:Used Stem SepTM immune magnetic cells separation method to culture mouse spleen NK cells,T cells and DCs,established culture systems in vitro;used of different approaches,different doses rmIL-18 to immunize HCC tumor-bearing mice,researched the effect of rmIL-18 on tumor growth rate and survival time.Results:rmIL-18 could induce and promote tumor-specific CTL-mediated killing effects in vitro culture system;tumor-specific CTL could significantly inhibit tumor growth(P<0.01) of and prolong the survival time of liver cancer tumor-bearing mice(P<0.01),and the effect was increased with rmIL-18 concentration increased(P<0.01),and intratumoral injection was superior to intraperitoneal injection(P<0.01).Conclusion:rmIL-18 can induce tumor-specific CTL in vitro and play a role in anti-liver cancer in mice.