Objective To explore the clinical experience of liver retransplantation in management of biliary complications after liver transplantation.Methods The clinical data of patients receiving liver transplantion in our department between April 2002 and Aug. 2004 were retrospectively analyzed, including 5 patients being subjected to liver retransplantation because of serious biliary complication.Results Three patients were cured with the survival time being 5 months, 6 months and 8 months respectively. Two patients died at 8th and 43rd day: one died of liver non-function combining with lung infection and heart failure, and another died of renal failure. Complications included liver absess, biliary infection, wound infection, hydrops abdominis and lung infection.Conclusions Liver retransplantation is an effective treatment for serious biliary complications after liver transplantation. Surgical procedure, indication, operative opportunity, perioperative monitoring and so on contribute to the increase of the survival rate of the patients receiving liver retransplantation.

Mongolian gerbil is a multifunctional laboratory anima1 resource with Chinese characteristics.It has many advantages for some research fields, and play an important role.The more biological characteristics of Mongolian ger-bils discovered with in-depth research will promote diverse application of this resoure.In this paper, we reviewed the devel-opment of application of Mongolian gerbils in taxonomy, parasitology, microbiology, cerebral ischemia, lipid metabolism, neurological diseases, and cancer researches.

Objective To study the effects and mechanism of exercise on learning-memory of space and in aged rats after cerebral ischemia-reperfusion. Methods 20 SD rats at the age of 20 months with cerebral ischemia-reperfusion were randomly divided into 2 groups. The experimental group (n=10) received regularly exercise, while the control group (n=10) exercised freely. Morris water maze was tested 1 week after exercise, and the brain-derived neurotrophic factor (BDNF) mRNA expression on the ischemic side of the hippocampus were detected.Results The latency in the 2nd round decreased (P<0.05) and the path line on the platform increased (P<0.05) in the experimental group in Morris water maze test (P<0.05), while the BDNF mRNA increased (P<0.01), compared with control group. Conclusion Regular exercise can improve space learning-memory ability of cerebral ischemia-reperfusion aged rats, which may associate with increased BDNF mRNA expression in hippocampus.

Objective To optimize the scheme of Mongolian gerbil superovulation.Methods Based on the analysis of the animal-week-old, the dose and time interval of hormone, we got the best animal-week-old, dose and time interval of hormone for Mongolian gerbil superovulation.Results The 6 week old female Mongolian gerbils which injected of 10 IU PMSG and followed by 10 IU hCG in 70 hours later could get the best superovulation.We collected eggs at 16 hour after mate with male gerbils.The ovum pick-up rate reached 80%, the number of oocytes were 32.6 ±3.0, the number of the fertilized egg developed to 2-cell are 24.8 ±5.4.Conclusions This study summarizes the optimization scheme of Mongolian gerbil superovulation induced by PMSG and hCG and it supported the foundation for Mongolian gerbils embryo biotechnology.

A survey was conducted among 121 health care managers and health workers in community health care institutions with questionnaire and interview.Data on health care conditions in the community and health needs of elderly people were collected and analyzed using principle component analysis method.The priority order of 17 community health care projects for elderly people was ranked with this analysis method and the development strategy of community health service was suggested.

Objective To study improvement of cognitive function impairment of vascular dementia rats induced by a permanent bilateral ligation of common carotid arteries (2VO) after administration of leptin in brain. Methods Hippocampal neurons was isolated and cultured from SD rats. At oxygen-glucose deprivation condition, protection role of leptin on hippocampal neurons was observed and expression of leptin receptor was detected. Animal model of rats was established by 2VO. Pre-treatment VaD model of leptin was established by administration leptin into hippocampus region. The Morris water test was performed to detect difference in the cognitive function between VaD group and control group. Neuron apoptosis in hippocampus tissue were determined with TUNEL. Results Leptin receptor expression could be seen in hippocampal neurons. After oxygen-glucose deprivation cultured for 12 h , plenty of apoptotic cells were seen in hippocampal neurons, apoptosis rat was up to (72.96 ± 6.25) % , while apoptosis rate was (46.33 ±7.85)% and (23.58 ±5.08)% in 1 ( μg and 5μg leptin treatment group,respectively. Compared leptin treatment group with control group,difference had a statistical significance(P<0.01). Compared with untreated VaD group, latency time was shorter and average velocity was increased in leptin-treat-ment VaD group. Neuron apoptosis in hippocampus tissue of leptin-treated group were different significantly from those of untreated group (P < 0.01). Conclusion Leptin could protect hippocampal neurons from apoptosis in vitro. Cognitive function impairment could be improved by administration of leptin into brain in VaD rats.

Objective To clone and express Staphylococcus aureus drug resistance adenylyltransferase gene in E .coli BL21 ,and to make the foundation for its function research .Methods Primers were designed on the basis of adenylyltransferase gene in gen‐bank ,PCR was used to amplify adenylyltransferase gene using Staphylococcus aureus genomic DNA as template .The obtained PCR production was attatched with pGEX‐4t‐1(+ ) plasmid ,and transformed into E .coli BL21 (DE3) .The recombinant plasmid was di‐gested by double enzyme digestion and identified by gene sequence .The recombinant protein was induced to expression by IPTG and identified by Western‐blotting .Results Using Staphylococcus aureus genome as a template ,the target fragment about 800 bp was successful amplified .After enzyme‐cutting and DNA‐sequencing ,the target fragment showed that the ORF begin with ATG ,end with TAG ,783 bp in length ,the predicted isoelectric point and molecular weight were 7 .75 and 29 × 103 ,and it was homology 99%homology with the reported sequence gene in genbank .SDS‐PAGE and Western‐blot showed the molecular weight of recombinant fusion protein was about 55 × 103 .Conclusion Adenylyltransferase gene of Staphylococcus aureus was successfully cloned and ex‐pressed in E .coli as a fusion protein ,which makes the foundation for the research of its function .

Objective 　Determination of Wilson disease gene mRNA expression in human fibroblast cell strain (Me32aT22/2L) by reverse transcription-polymerase chain reaction (RT-PCR). Methods　Using lipofection reagent, the plasmid vector carrying the Wilson disease gene (pRc/CMV-WD) was transferred into Me32aT22/2L cultured in serum free complement medium. RT-PCR was used to determine WD mRNA expression in Me32aT22/2L. Results　 Wilson disease gene expression was detected in Me32aT22/2L, while no specific signals were detected in untransfected fibroblast. Conclusions　It demonstrated that Me32aT22/2L strain could express the Wilson disease gene, suggesting that Wilson disease gene transfer might develop a new approach to study Wilson disease.

Objective To investigate the expressions and clinicopathological significance of 3q27-3q29-related p63 protein in diffuse large B-cell lymphoma (DLBCL). Methods An immunohistochemical Envision~(TM) method was used to detect the expressions of p53 and 3q27-3q29-related p63 protein in 102 cases of DLBCL and 15 cases of reactive hyperplasia of lymph node (RHL). Results The tumor cell expressions of p53(62 %) and p63(56 %) in DLBCL were significantly higher than that in RHL (0 and 13 % P < 0.05). The expressions of p53 and p63 were significantly different (1) between stage Ⅰ + Ⅱ (the positive rate 48.3 % and 41.4 %, respectively) and stage Ⅲ+Ⅳ(the positive rate 79.5 % and 75 %, respectively; P <0.05), (2) between GCB type (the positive rate 28 % and 28 %, respectively) and non-GCB type(the positive rate 72.7 % and 64.9 %, respectively; P <0.05). The expressions of p53 and p63 had no relationship to gender, age, B symptoms and locations. The expression of p53 was positively correlated with that of p63 in DLBCL (P <0.05, Cp=0.629). p53 and p63 protein expression in negative group the 5-year overall survival rate is higher than that in positive group (38 % and 6 %, 51% and 4 %, respectively), the difference was statistically significant (P <0.05). Conclusion It was likely that p63, as the oncogene, participated in the occurrence and development of DLBCL together with p53. Also, p63 and p53 might play a synergistic role in the occurrence DLBCL. Combined detection of 3q27-3q29-related 1963 protein and p53 protein in DLBCL, might be one of the indicators to the prognosis of DLBCL.

Objective To establish a detection technique for H.pylori(HP) infection in Mongolian gerbils using nested PCR technique.Methods H.pylori was cultured in vitro and inoculated into Mongolian gerbils.At the 10th week after infection, the HP in the gastric juice of Mongolian gerbil was detected by conventional PCR assay and the gastric juice, gastric mucosa, duodenal contents and colon stool were examined by nested PCR.Rapid urease test and ELISA were used to analyze the accuracy of the nested PCR assay.All of the PCR products were verified by sequencing.Results The positive rate of gastric juice detected by conventional PCR was 30%, while the positive rates of gastric juice, gastric mucosa, duodenal contents and colon stool detected by nested PCR were 100%, 100%, 90%, and 10%, respectively.The positive detection rates of rapid urease test and serum ELISA were 100% and 0%, respectively.Comparing the results of different methods, both the positive rates of gastric juice and gastric mucosa detected by nested PCR and the detection rate of rapid urease test were 100%, but the results of conventional PCR detection of gastric juice, the nested PCR detection result of stool in colon and of serum ELISA assay were lower than other methods.Conclusions Due to its high accuracy and sensitivity, the nested PCR assay of gastric juice can be used for the long-time detection of H.pylori infection in Mongolian gerbils, especially useful in the experiments of prevention and treatment of H.pylori infection.