ObjectiveTo investigate the anti-tumor effect of agonist MnCl_2of a novel cyclic guanosine monophosphate-adenosine monophosphate synthase(c GAS)/stimulator of interferon genes(STING)pathway collaborated with tumor cell lysate(Lysate)and the neo-antigen 10K-Adpgk of mouse colon cancer MC38 cell line.MethodsBone marrow-derived dendritic cells(BMDCs)were extracted from mouse bone marrow and divided into three groups:PBS,1 μmol/L MnCl_2and 10 μmol/L MnCl_2,which were analyzed for the maturation by flow cytometry,determined for the concentration of IL-6 in supernatant by ELISA,and detected for the transcription levels of IL-6,IFN-α,IFN β and CXCL9 genes by q PCR.Mouse tumor model was established by using MC38 cell line.When the tumor volume reached 100 mm3,the mice were randomly divided into two groups for administration,PBS,Lysate,MnCl_2,10K-Adpgk,Lysate + MnCl_2group and Lysate +10K-Adpgk + MnCl_2combined treatment group,which were administered subcutaneously through the tail for 3 times,with each interval of 1 week,and measured for the tumor volume every 2 days.One week after the last dose,serum samples were collected and determined for the concentrations of IFNγ and TNFα by ELISA.The tumor and spleen were isolated.The proportions of tumor infiltrating T cells and T cells in peripheral blood mononuclear cells(PBMCs)and the ratio of T cells to memory T cells in spleen were detected by flow cytometry,and the proportion of antigen specific T cells in spleen was detected by ELISPOT.Results10 μmol/L MnCl_2stimulated the maturation of BMDCs and activated the subsequent immune process.The tumor volumes of mice in the combined treatment group were considerably smaller than those in PBS group,the contents of IFNγ and TNF-α in serum were higher than those in other groups,and the proportions of tumor infiltrating T cells,T cells in PBMCs and ratio of T cells to memory T cells in spleen were also significantly higher than those in PBS group.Combined therapy caused strong antigen-specific T cell immune response.ConclusionThe addition of the novel adjuvant MnCl_2significantly enhanced the treatment effect of tumor cell lysate and neo-antigen,which provided an experimental basis for the development of the combination tumor treatment method based on MnCl_2and tumor antigens.

Objective To investigate the clinical significance of the changes of hemodynamics and electrolyte during orthotopc liver transplantation.Methods We studied 9 patients undergoing elective orthotopic liver transplantation without venovenous bypass,drew out arterial blood for monitoring arterial blood gas tensions,Na~+,K~+,Ca~(2+) and observed changes in hemodynamics and electrolyte.Results In most patients,arterial pressure significantly decreased at the prophase of the anhepatic phase,and tended to normal range in other phases.The concentration of calcium maintained a low-level during the whole surgery.During the prophases of the anhepatic phase and neo-hepatic phase,there was a light hyperkalemia,and the concentration of natrium slightly increased since 30 minutes after the anhepatic phase and neohepatic phase,but insensibly exceeded normal range.With resuming of the stability of hemodynamics,these changes had followed.Conclusion We shoud give our attention to correct the occurrence of the hypocalcemia during the forepart of the anhepatic phase and neo hepatic phase,and care for the hyperkalemia 5 minutes after the block of liver blood purveyance and revascularization of liver.The lock of body capability shoud be recruit duly according to the lose of blood and hemacytometer changes.In order to prevent serious academia and maintain the stability of hemodynamics and electrolyte,vasoconstrictor shoud be used carefully during the anhepatic phase.

Objective To investigate the relationship between occurrence of unexplained recurrent spontaneous abortion(URSA) and immune function of T lymphocytes. Methods T lymphocyte subsets and CD + 4 T helper subsets (including T helper 1 and T helper 2 cells) in peripheral blood from 30 cases with URSA and 24 healthy women (controls) were detected by enzyme-linked immunospot assay (ELISPOT). Results The percentage of CD + 4 positive T lymphocytes in URSA group was higher than that in the controls (60% vs 45%, P

AIM: To study the effect of sesamin on expression of inducible nitric oxide synthase(iNOS)and nitrotyrosine(NT)in rat liver tissue with metabolic syndromic hepatic steatosis. METHODS: The rat model of metabolic syndromic hepatic steatosis was induced by operation of two kidneys with one clip(2K1C)and high-fat. The rats taken from that successful model were randomly divided into model group and sesamin(120, 60, and 30 mg·kg~(-1)·d~(-1))groups. In addition, the sham-operated group was set up. The rats in treated group were given sesamin intragastrically everyday for 8 weeks. The levels of blood lipids(TC, TG and FFA)in serum were detected. The activity of SOD and MDA level in the liver homogenate were determined. The expressions of iNOS and NT proteins were detected by Western blotting analysis. The histopathological changes were observed by HE staining in the liver tissues. RESULTS: Compared to model groups, sesamin(120, 60 mg·kg~(-1))significantly inhibited the elevation of serum TC, TG, FFA, and MDA in liver homogenate(P<0.05), and increased the activity of SOD(P<0.05). It also decreased the protein expression of iNOS and NT(P<0.05), and ameliorated the degree of hepatic steatosis. CONCLUSION: Sesamin prevents and cures the metabolic syndromic hepatic steatosis. The mechanism is probably mediated through decreasing the protein expression of iNOS and NT, and alleviating the oxidative stress in addition to regulating the lipid metabolism.

Objective To investigate the clinical significance of fine needle aspiration biopsy and immunohistochemical markers in differential diagnosis of thyroid nodule.Methods One hundred and eighty-five cases of thyroid nodule were enrolled in the study.All cases received preoperative fine-needle aspiration biopsy and immunocytochemistry.Results The sensitivity,specificity,diagnostic accuracy of fine needle aspiration biopsy to detect diagnosis of thyroid nodules was 75.0％ (21/28),85.4％ (134/157),83.8％(155/185).The positive rates of p53 and galectin-3 immunodetection in discriminating benign from malignant thyroid nodules were 60.7％ (17/28),85.7％ (24/28),combined with p53 and galectin-3 immunodetection in discriminating benign from malignant thyroid nodules was 50.0％ (14/28).The positive rates of p53 and galectin-3 immunodetection in thyroid adenomas were 0,5.1％ (8/157),combined with p53 and galectin-3 immunodetection in thyroid adenomas was 1.3％ (2/157).The positive rates of p53 and galectin-3 immunodetection in malignant thyroid cytologic specimens,alone or combined were significantly higher than those in thyroid adenomas,there were significant difference(P ＜ 0.05).The diagnostic accuracy of fine needle aspiration biopsy with p53 and galectin-3 immunodetection,alone or combined,in discriminating benign from malignant thyroid nodules [94.1％(174/185),93.5％(173/185),91.4％(169/185)] were higher or equal to those in fine needle aspiration biopsy[83.8％(155/185)],there were significant differences (P ＜0.05).Conclusion Immunodetection of p53 and galectin-3 combined with fine needle aspiration biopsy in the differential diagnosis of thyroid nodules can raise the diagnostic accuracy.

Objective To detect differentially expressed genes in prostate cancer by cDNA microarray. Methods Total RNA was isolated by one step protocol from prostate cancer (CaP) and from normal prostate,and Poly(A) +RNA was further purified through Oligitex mRNA Midi Kit.Then it was analysed for differentially expressed genes in CaP and normal prostate by cDNA microarray with 4 096 human genes. Results There were 341 differentially expressed genes between CaP and normal prostate,of which there were 128 down regulated and 213 up regulated ones for CaP. Among these genes,15 were the most significant with 6 down regulated and 9 up regulated. Conclusions cDNA microarray can be used effectively to find out differentially expressed genes in prostate cancer which is not regulated by any single gene.Many different kinds of genes are involved in the initiation and evolution of CaP carcinogenisis.

Objective To study the expression and significance of antiapoptosis facter-clusterin in prostate neoplasm. Methods Reverse transcriptive polymerase chain reaction(RT PCR) was used to examine the expression level of clusterin in prostate cancer tissues(3 cases),prostate cancer cell line PC3M and normal prostate tissues(3 cases). Results Compared with the internal marker gene ? actin , the expression level of clusterin in prostate cancer is much higher than that of normal prostate. Conclusions The high expression level of clusterin in prostate cancer indicates that clusterin may play an important role in the biological characteristics of prostate cancer through the antiapoptosis pathway.

Objective Cloning of some specific genes related to the prostate cancer. Methods Specimen from a patient with prostate cancer and from a normal adult were studied by the improved mRNA differential display and the differentially expressed sequence-tags were cloned,sequenced and analized.Reverse transcriptive-polymerase chain reaction(RT-PCR) was used to examine the expression level of Clusterin in prostate cancer tissues,prostate cancer cell line and normal prostate tissues. Results Significant difference was observed between the two kinds of tissues in gene expression and seven differentially expressed sequence-tags were found through analysis in GenBank.Among them,five were proved to be new gene tags,one shared 100% homology with Clusterin,which was highly expressed in the prostate cancer tissue and the other one shared 97% homology with superoxide dismutase 1 (SOD1),which was highly expressed in the normal prostate tissue.It was proved by RT-PCR that to compare with the internal marker gene ?-actin,the expression level of clusterin in prostate cancer is much higher than that of normal prostate. Conclusions Five new gene tags,clusterin and SOD1 were found to be differentially expressed between tissues of prostate cancer and normal prostate and may play important roles in carcinogenesis and development of prostate cancer.

Objective: To investigate pharmacokinetics of propofol during anhepatic period of orthotopic liver transplantation (OLT) in children. Methods: In 5 children undergoing OLT, 2 mg/kg propofol was injected intravenously at the beginning of induction and anhepatic periods respectively. The plasma concentration of propofol was measured by reverse-phase high performance liquid chromatography(RP-HPLC), and the pharmacokinetics character of propofol between anhepatic and inducing periods were compared. Results: Propofol had wide distribution and high clearance, and its plasma concentration-time curves were fitted to a three-compartment open model. Conclusion: There is no difference of propofol metabolism between anhepatic and inducing periods, suggesting that there must be notable extra-hepatic metabolism when propofol used in children undergoing OLT.

In order to evaluate the factor. which affect the five year survival rate and prognosti c factors of the early carcinoma of the esophagus and the gastric cardia treated with endoscopic Nd : YAG laser therapy , thirty-three patients were followed. Of the 33 patients , 32 ( 97% ) cases were cured , resul- ting in the disappearance of the cancer cells. They were followed up for 3 3- 78 months , with a mean of 55. 3 months. The survival rate of the 32 patients treated with endoscopic laser was computed with the Product limit estimate method ,and was compared with the natural history of early superficial carcinoma . of the esophagus and the gastric cardia. The five year survival rate was in 97% of the 32 patients treated with laser therapy ,in contrast to 67% (P