Asaresult,establishinganimalmodelsoflivercancerisofhighvalue.Therearetwoparts of the establishment of animal models-the selection of laboratory animals and the source of tumors.The animal models could be classified into different patterns due to difference sources of tumor,and these different patterns possess distinctive characters and limitations.The ideally animal models should satisfy the general requirements of biological habits,biochemical properties,and pathological features which are similar with human hepatocel-lular and easy to establish.

Objective To develop a PDA-based wireless electrocardiographic monitoring system meeting the requirements of doctors in mobile work.Methods ECG signals were received from hospital monitor center through mobile network,and then were analyzed with digital signal processing technology and electrocardiographic information processing technology.The results were sent to patients as soon as the data were diagnosed by doctors,thus realizing the real-time monitoring.Results PDA-based wireless electrocardiographic monitoring system applied many advanced technologies such as mobile communication technology,blue-tooth technology,embedded database technology,etc.so that doctors could examine patients' records and electrocardiogram at any place and in any time.Conclusion Clinical experimental results show that the system fulfils doctors' requirements and improves their work greatly.

Objective To detect the expression of Id1 and HBx in HBV-related hepatocellular carcinoma (HCC) tissue samples and analyzed the correlation between Id1 expression levels and clinicopathological features of patients.Methods Tumor tissue samples obtained from a total of 113 HCC patients.The expression of Id1 proteins of these samples were detected by immunohistochemical (IHC) staining and evaluated by two independent pathologists.The corrections between the clinical pathological parameters and the IHC scores for Id1and the prognostic significance were statistical analyzed by SPSS 19.0 software.Results Ninty-six of 113 patients is HBV-related HCC.Over-expression of Id1 were found positively correlated with the HBsAg ＞ 200 s/n,histological grade,portal vein invasion.Patients with Id1 overexpression had both shorter disease-free and overall survival times.Conclusions High expression of Id1 was correlated with serum HBsAg,histological grade,portal vein invasion and poor clinical outcomes in HBV-related HCC.

Objective:To discusse the clinical features of sarcomatoid hepatocellular carcinoma to improve the understanding of diagnosis and treatment for sarcomatoid hepatocellular carcinoma. Methods:Data including clinical features and follow-up from 8 pa-tients admitted in Tianjin Medical University Cancer Institute and Hospital from January 2009 to April 2014 were retrospectively ana-lyzed. Results: The average age of all patients was 56.6 years old, and the male-to-female ratio was 3:1. Preoperative CT or MRI showed specific characteristics but it was difficult to confirm diagnosis. Pathological and immunohistochemical examination revealed an expressed epithelial-like phenotype. All 8 patients had advanced local tumor invasion and high lymph node metastasis rates. These patients received surgery, and the median survival time was 10.8 months (3 months to 35 months). Conclusion:Diagnosis of sarcoma-toid hepatocellular carcinoma mainly depended on postoperative pathological examination. Immunohistochemistry was beneficial for sarcomatoid hepatocellular carcinoma diagnosis and differential diagnosis. Surgical treatment prolonged survival time, but the overall prognosis remained poor.

Three-dimensional structure model of azoreductase AZR of Rhodobacter sphaeroides was con- structed using homology modeling method. It is a flavodoxin adopting ?/? structure. Structure alignment of two different types of flavin-dependent azoreductases revealed that they possessed high similarity. Based on sequence and structure analysis, site-directed mutagenesis of K109H and K109A were performed. The opti- mal pH values are pH 6 and pH 9 for K109H and K109A mutant protein, respectively. The optimal tempera- ture (30℃) is not affected by mutagenesis. Positively charged residues at position 109 is necessary for the binding of methyl red, while K109H is not a conserved mutagenesis for the binding of NADPH. K109 may only be involved in the binding of the 2’-phosphate group of NADPH and have no effect on the binding of NADH.

Objective To observe the clinical efficacy and safety of pemetrexed injection combined with cisplatin injection in the treatment of recurrent lung adenocarcinoma.Methods A total of 80 patients with recurrent lung adenocarcinoma were randomly divided into control group (n =40 cases) and treatment group (n =40 cases).Control group was given docetaxel 75 mg · m-2,intravenous infusion for 1 h at day 1 + cisplatin 25 mg · m-2,intravenous infusion for 1 h at day 1-3.Treatment group was given pemetrexed 500 mg · m-2,intravenous infusion at day 1 + cisplatin 25 mg · m-2,intravenous infusion for 1 h at day 1-3.Two groups were treated for 2 cycles with 21 d per cycle.The clinical efficacy,survival time and adverse drug reactions were compared between two groups.Results After treatment,in the treatment and control groups,the overall response rates were 57.50％ (23/40 cases) and 47.50％ (19/40 cases),the disease control rates were 87.50％ (35/40 cases) and 77.50％ (31/40 cases)with significant difference (P ＜ 0.05).After treatment,in the treatment and control groups,the median progression-free survival were 6.4 and 5.8 months;the median overall survival time were 9.9 and 9.0 months;1 year survival rates were 35.00％ (14/40 cases) and 30.00％ (12/40 cases) without significant difference (P ＞ 0.05).The adverse drug reactions in treatment and control groups were based on leukopenia (50.00％ vs 47.50％),thrombocytopenia (7.50％ vs 10.00％),hemoglobin reduction (37.50％ vs 37.50％),nausea and vomiting (52.50％ vs 52.50％),hair loss (47.50％ vs 47.50％),liver and kidney injury (7.50％ vs 7.50％),the differences were not statistically significant (P ＞ 0.05).Conclusion Pemetrexed injection combined with cisplatin injection has a definitive clinical efficacy in the treatment of recurrent lung adenocarcinoma,without increasing the incidence of adverse drug reactions.

ObjectiveTo investigate the treatment strategies and factors influencing the prognosis of patients with primary gallbladder carcinoma.MethodsThe clinical data of 135 patients with primary gallbladder cancer who were admitted to the Cancer Hospital of Tianjin Medical University from January 2000 to December 2009 were retrospectively analyzed.The survival curve was drawn by the Kaplan-Meier method,and the survival rates were analyzed by using the Log-rank test.Factors which may have influences on the prognosis were analyzed by univariate analysis and COX multivariate analysis.ResultsThe overall 1-,3-,5-year survival rates of the 135 patients were 46.7％,10.4％ and 5.2％,respectively.The 1-,3-,5-year survival rates of 74 patients who received radical resection of gallbladder cancer were 68.9％,18.9％ and 9.5％,respectively.The 1-,3-,5-year survival rates of 50 patients who received palliative treatment were 24.0％,0 and 0,respectively.The 1-,3-,5-year survival rates of 11 patients who received conservative treatment were 0,0 and 0,respectively.There was no significant difference in the survival rates among patients who received different treatment methods (x2 =5.642,P ＜ 0.05 ). Of the 9 patients with gallbladder cancer who received reoperation after laparoscopic choledochotomy,the survival time of 1 patient in stage Ⅰ and 1 of the 3 patients in stage Ⅱ who received radical surgery exceeded 5 years,while the survival time of 5 patients in stage Ⅱ who received palliative treatment was shorter than 5 years.There was a significant difference in the survival time among the 3 groups of patients ( x2 =5.642,P＜0.05).Under the condition of same TNM stages ( Ⅱ,ⅢA,ⅢB,ⅣA,ⅣB),the survival rates of patients who received radical resection of gallbladder cancer were significantly higher than those who received palliative or conservative treatment ( x2 =8.971,21.250,44.153,6.696,21.722,P ＜ 0.05 ).The results of univariate analysis showed that age,CA19-9,TNM stages and treatment methods were risk factors influencing the median survival time ( x2 =8.466,3.977,9.837,5.642,P ＜ 0.05 ).The results of multivariate analysis showed that age,TNM stages and treatment methods were the independent risk factors influencing the median survival time ( Wald=5.779,14.724,11.640,P＜0.05).ConclusionThe prognosis of primary gallbladder cancer is poor.Age,TNM stages and treatment methods are the independent factors influencing the prognosis of patients with gallbladder cancer,and patients who receive radical resection have relatively good prognosis.

Liver is the most common metastatic organ in patients with advanced colorectal cancer. Once colorectal cancer liver metastasis (CRLM) occurs, the prognosis will be poor. Therefore early detection of CRLM has a great clinical significance for improving the prognosis of CRLM patients. Surgical resection of primary and metastatic lesion is the only possible curable option for CRLM, translational therapy, interventional therapy and multidisciplinary team also provide more treatment ideas. Long non-coding RNA, cancer stem cells and phosphatidylinositide-3-kinases/protein kinase B signaling pathway reveal the main mechanism of CRLM from different aspects. This article reviews the recent advances in the early diagnosis, treatments and main mechanisms of CRLM.

Objective To analyze the clinical manifestations and the criteria for the diagnosis of POEMS syndrome.Methods The clinical characteristics of 36 cases of POEMS syndrome were retrospectively reviewed and compared with the cases reported in literature.Results In addition to the typical characteristics of polyneuropathy(100%),organomegaly(92%),endocrinopathy(86%),monoclonal plasmaproliferative disorder(100%) and skin changes(86%),the patients of POEMS syndrome also have other important features including extravascular volume overload(97%),papilledema(57%) and bone lesions(25%).Furthermore,25% of POEMS syndrome patients have co-existent Castleman disease.Conclusion To make the diagnosis of POEMS syndrome,both major and minor criteria are required.The former includes polyneuropathy and monoclonal plasmaproliferative disorder and the latter includes osteosclerotic bone lesions,Castleman disease,papilledema,organomegaly,edema or serous cavity effusion,endocrinopathy and skin changes.

Objective To explore the efficacy and immune reconstitution of autologous peripheral blood stem cell transplantation (APBSCT) in the treatment of refractory autoimmune thrombocytopenia purpura (ITP). MethodsOne patient with refractory ITP was treated with APBSCT, the effectiveness and the process of immune reconstitution were analyzed retrospectively. Results The case was mobilized by cyclophosphamide (CY) plus G-CSF and 4.7?106/kg CD34+ cell was gained totally. Neutrophil and platelet were engrafted at 11th and 12th day without severe complications following the conditioning of TBI and CY. Although the each phenotype of the peripheral blood lymphocytes recovered gradually 6 months after the transplant,inverted CD4/CD8 ratio exited and memory T cell was improved much earlier than naive T cell. The platelete count was constantly over 100?109/L and the patient was in complete remission after a follow-up of 31 months.Conclusion APBSCT is a potential approach in the treatment of refractory ITP.