Objective To estimative the relationship between ras gene mutation,PCNA overexpression and the recurrence and prognosis of gallbladder cancer.Methods PCNA was studied by ABC immunohistology, ras gene mutation by PCR-RELP analysis.Results Histology,Nevin staging and operative methods were relevant to the prognosis of gallbladder cancer.The patient with stag IV,V gallbladder cancer had a poor prognosis;radical operations could prolong patients survival time.The mortal risk of patients with ras gene mutation was 1.62 times higher than that without ras gene mutation,with high overexpression of PCNA was 2.2 times higher than that with low expression of PCNA. Conclusions Differentiation degree, Nevin′s staging, mutation of ras gene and overexpresion of PCNA could be the prognostic factors in gallbladder cancer,and could help to select the operative procedure and to eluvate the surrival.

Objective To make clear the relationship between adenoma,malignant transformation of ade- noma and carcinoma in gallbladder.Methodes The nuclear morphometry was performed with a TJTY-300 Auto- matic Image Analyser and PCNA was measured with immunohistochemisty in 25 cases of carcinoma,20 cases of adenoma and 3 cases of normal gallbladder.Results (1) Cell DNA content,atypia and PCNA index were in- creased gradually from the normal cell to dysplasia to malignant transformation of adenoma to carcinoma in gallblad- der;(2) Aneuploidy in gallbladder adenoma and PCNA index had significant relationship to the size of adenoma and gallstones (P

Objective To study the antioxidant activity of the extract from north Ph.praecox leaves.Methods The extract from north Ph.Praecox leaves was made by ultrasonic-assisted extraction process,and the concentration of the total flavonoids was detected by NaNO3-Al(NO3)3-NaOH methods.The antioxidant capacity of the extraction was detected by DPPH free radical scavenging method and CuSO4-Phen-Vc-H2O2-DNA reaction with ultra-weak chemiluminescence method.Results The bamboo leaf extract could scavenges the DPPH free radical with the IC50 value as 7.02 mg /L and could delay the development of the emission peak value(P

Objective To explore the influnce and related factors analysis postpartum community visit for 6 months old infants exclusive breastfeeding (EBF).Methods 800 women in Daqing city communities delivered in January,2009 to December,2010 were selected into study based on simple random sampling.Using the questionnaire surveyed the influence of the postpartum community visit for 6 months old infants EBF.Results Reclaimed effective questionnaires were 790 ;6 months old infants EBF rate was 65.06％ ;the receiving postpartum community visit group's 6 months of EBF rate 7 4.8 7 ％) was significantly higher than the not receiving postpartum community visit group (38.50％),difference was statistically significant(x2 =90.54,P ＜ 0.01).Logistic regression analysis showed that main related factors of 6 months old infants EBF were the first breast feeding time,whether or not to accept the postpartum visit,mode of delivery and mother's education degree,respectively.Conclusion Postpartum community visit can promote 6 months old infants for EBF,but still need to pay more attention to coordination and improvement.

Objective To study and analyse the parameter values of voice in normal healthy preschool children and school-age children. Methods In present paper, voice quality of 120 cases were collected and analyzed with Dr. Speech software. Results There were no differences between preschool and school-age children on parameters jitter, shimmer, SNR, HNR, NNE, F 0, F 1,F 2,F 3 of voice acoustic and so in difference gender. Conclusion All parameters in preschool children and school-age children showed no difference. The tested parameters were significantly different between normal children and children with vocal nodule.

According to the unique geographical conditions,climatic factors,human constitution,dietary custom,social environment and so on,the main etiology of exogenous cough in Lingnan areas is pathogenic dampness;and the main pathogenesis is phlegm-dampness internal retention and impaired and descending of lung.The syndrome of phlegm-dampness and syndrome of phlegm-heat are more common clinical types.We propose eliminating dampness and resolving phlegm,dispersing and descending lung qi as its main therapeutic methods.For chronic cough,it often have to take the therapeutic methods of strengthening spleen and nourishing lung.

Objective: To clone cDNA of human interleukin-29(IL-29) and express it in cos-7 cells, and to study its anti-HBV activity in vitro. Methods: Total RNA was extracted from PBMCs which had been infected with vesicular stomatitis virus(VSV) in vitro.IL-29 cDNA was amplified using one-step RT-PCR technique. The recombinant expressing plasimd of psectagB/His-myc-IL29 was constructed by inserting IL-29 cDNA into the vector and was then transfected into cos-7 cells. Stable expression stains were screened by Hygromycin B and limited dilution method. The target protein was purified through Ni2+-chelating Sepharose Fast Flow. Anti-viral bioactivity of the recombinant IL-29 fusion protein was analyzed through an in vitro model of production of HBV by the HepG2.2.2.15 cell line.ELISA was used for detection of the viral titers in the cell cultural supernants. Results: IL-29 was cloned and stably expressed in cos-7 cells successfully. SDS-PAGE and Western blot analysis showed multiple bands of the target protein with the molecular weights between 20 000 and 33 000, and the major band was located at about 33 000, indicating the fused IL-29 modified by additional glycosylation. The rhIL-29 was shown to dose-dependently inhibit secretion of HBsAg and HBeAg accompanied by the reduction of HBV genomic DNA in the cells tested. The inhibition ratio of HBsAg and HBeAg production was attained 85% at a concentration of 160 ?g/L of rhIL-29. Conclusion: The rhIL-29 with anti-HBV activity has been obtained.

Objective To study the characteristics of immune function,Epstein-Barr virus(EBV) antibodies and EBV-DNA in children with different clinical types of EBV infection,which provide basis for prevention and treatment of EBV infection.Methods Clinical data of 103 patients suffering from EBV infection were retrospectively analyzed in Xijing Hospital of the Fourth Military Medical University.A total of 103 children were divided into infectious mononualeosis(IM) group(n=68),chronic active Epstein-Barr virus infection(CAEBV) group(n=13) and Epstein-Barr virus-related hemophagocytic lymphohistiocytosis(EBV-HLH) group(n=22).The changes of EBV antibodies,EBV-DNA,immunoglobulin levels,lymphocyte subpopulation and complement series were detected and compared among the three groups.A total of 26 healthy children at the same stage were enrolled as a control group,immunoglobulin levels,lymphocyte subpopulation and complement series were detected in control group,then compared with the rest of the three groups.Results The levels of C3 and C4 in CAEBV group and EBV-HLH group were significantly decreased than those in the control group(P<0.05).The levels of IgA,IgG and IgE in EBV-HLH group,CAEBV group,IM group and control group gradually increased(P<0.05,respectively).The levels of IgA,IgG and IgE in EBV-HLH group and CAEBV group significantly decreased than those in control group(P<0.05,respectively).The levels of IgA,IgG and IgE in IM group decreased than those in control group,while there were no statistically significant differences(P>0.05).CD8+T cells in IM group significantly increased than those in the rest of the three groups(P<0.05,respectively).T cells,CD8+T cells,CD4+ T cells,CD4+/CD8+ ratios,NK cells,B cells of EBV-HLH group significantly decreased than those in the rest of the three groups(P<0.05).The positive rates of EBV antibodies in CAEBV group and IM group were significantly higher than those in EBV-HLH group(P<0.05).EBV-DNA in EBV-HLH group were significantly higher than those of CAEBV group and IM group(P<0.05).Conclusion EBV-DNA levels in the serum are positively correlated with disease types and severity,the pathogenesis of IM,CAEBV and EBV-HLH induced by EBV infection are associated with immune dysfunction.Dynamic monitoring of EBV load and cell immune function can reflect disease status and progress risk.

Objective_To explore the influence and mechanism of IL-31 on the expression of VEGF, EGF and EG-FR in 16HBE cells.Methods_16HBE cells were cultured and treated with IL-31 with or without SB203580 or SP600125, real-time PCR and Western blot were applied to determine the mRNA and protein expression of VEGF, EGF and EGFR respectively.Meanwhile, Western blot was used to examine the changes of P38 MAPK and JNK signaling pathways.Results_Compared with control group, the mRNA expression of VEGF, EGF and EGFR was increased markedly under the stimulation of IL-31 ( P<0.01 ) , the expression of p-P38 MAPK and p-JNK signifi-cantly increased ( P<0.01) .Compared with IL-31 group, the expression of p-P38 MAPK significantly decreased in IL-31 combined with SB203580 or SB203580 group ( P <0.01 ) , while the expression of p-JNK markedly decreased in IL-31 combined with SP600125 or SP600125 group( P<0.01) .Compared with IL-31 group, the expression of VEGF was significantly decreased in IL-31 combined with SB203580 or SP600125 group ( P <0.01 ) , while the expression of EGF and EGFR was markedly declined in IL-31 combined with SB203580 group ( P<0.01 ) .Conclusions_IL-31 may up-regulate the expression of VEGF through activating P38 MAPK and JNK signaling pathways and up-regulate the expression of EGF and EGFR through activating P38 MAPK signaling path-way in16 HBE cells.

Objective To investigate the changes in the abilities of invasion and metastasis in surviving human lung adenocarcinoma (A549) cells after X-ray irradiation and the related mechanism.Methods The change in radiosensitivity after X-ray irradiation was determined by colony formation assay.The abilities of invasion and metastasis were evaluated by MTF adhesion assay and Transwell invasion and migration assay in vitro.The mRNA and protein expression of E-cadherin,vimentin,tumor growth factor (TGF)-β1,matrix metalloproteinase (MMP)-2,and MMP-9 was measured by real-time RT-PCR using SYBR Green fluorescence and Western blot.Results The colony formation assay showed that the surviving A549 cells after X-ray irradiation were more resistant to irradiation (ratio of D0 values =0.94).Their abilities of adhesion,invasion,and migration were significantly increased by 1.46 times,1.40 times,and 1.45 times,respectively.In addition,the surviving cells showed enlarged intercellular spaces and had many long pseudopodi.Compared with those in the control group,the mRNA expression levels of vimentin,TGF-β1,MMP-2,and MMP-9 of surviving cells were increased by 1.37 times,2.37 times,1.80 times,and 1.50 times,respectively,the protein expression levels of the above substances were increased by 1.60 times,1.80 times,1.10 times,and 1.20 times,respectively,and the mRNA and protein expression levels of E-cadherin were decreased by 59.4％ and 74.6％.Conclusions The surviving A549 cells after X-ray irradiation have significantly increased abilities of invasion and metastasis.This may be due to radiationinduced TGF-β1 expression increase that in turn promotes epithelial-mesenchymal transition and also due to radiation-induced MMP-2 and MMP-9 expression increase.