0.05),but the positive degrees were distinctly different(P0.05). Conclusion:The status of p53 may be related with multidrug resistance and the p53 positive tumors possibly show low sensitivity to chemotherapy.

Aim Tostudytheinfluencesofsulfated polysaccharides ( SPPM60-D) on the regulation of free calcium concentration ( [ Ca2+] i ) of T lymphocytes of mice in vitro and explore the mechanisms involved. Methods Polysaccharides(PPM60)wereextracted from masson pine pollen with hot water and 60% etha-nol. PPM60-D was separated and purified from PPM60 with Sephacryl S-400HR. Sulfated polysaccharides ( SPPM60-D ) were derivated by chlorosulfonic acid-pyridine method and the [ Ca2+] i of T lymphocytes were measured by fluorescence spectrophotometer. IL-2 and IL-4 were measured by ELISA kits. Results ConAandSPPM60-Dcouldincrease[Ca2+]iinT lymphocytes by 211. 5% and 201. 8% respectively ( P<0. 01). 2-APB, LY294002, U73122 and verapamil rather than TAK-242 could significantly inhibit the in-crease of [ Ca2+] i induced by SPPM60-D. SPPM60-D could significantly increase the level of IL-2 and IL-4 in supernatant ( P <0. 01 ) . 2-APB rather than TAK-242 could significantly inhibit the increase of cyto-kines.Conclusion ItisspeculatedthatSPPM60-D could increase [ Ca2+ ] i via TCR/CD3-PI3K-PLC-IP3 R-Ca2+ signal pathway through TCD/CD3 receptor in T lymphocytes so that it could improve the level of IL-2 and IL-4 in supernatant in T lymphocytes.

Objective To evaluate the efficacy and security of combined recombinant human endostatin with GP chemotherapy for the treatment of advanced non-small-cell lung cancer (NSCLC).Methods Non- randomized concurrent control was used.32 patients were treated by recombinant human endostatin combined with chemotherapy as test group,40 patients of control group only received chemotherapy.The response rate (RR),the clinical benefit rate (CBR) and the time to progression (TTP) were observed.Results The total RR in two groups were 40.6 ％ and 20.0 ％ (x2 =3.66,P =0.07).The total CBR were 68.8 ％ and 42.5 ％ (x2 =4.93,P =0.034).The total time to progression were 5.2 months and 3.9 months (P =0.042).Incidence of adverse reactions of experimental group and control group was no significant difference.Conclusion Combined recombinant human endostatin and chemotherapy can improve the curative effect (RR,CBR and TTP) of advanced NSCLC.

Humans ; Multiple Myeloma ; drug therapy

Adult ; Cardiac Catheterization ; adverse effects ; Female ; Heart Septal Defects, Atrial ; therapy ; Hemolysis ; Humans

Objective To investigate the risk factors related to mortality of children with deep fungal infection in pediatric intensive care unit(PICU).Methods A retrospective case-control study was applied.Ninty-six patients admitted to PICU with clinical or definite diagnosis of deep fungal infection from Nov 2005 to Mar 2009 were included.The risk factors related to mortality wereanalyzed with the logistic regression analysis.The research factors included:sex,age,primary diseases,complications,invasive operations and therapeutic measures etc.Results Of all 96 children,28 died (28.2％).According to the analytical results of multivariate logistic regression,the variables significantly associated with mortality were immunosuppressive (OR =185.770,95 ％ CI 11.467 ～ 3 009.507),mechanical ventilation (OR =11.555,95 ％ CI 2.780 ～ 48.039),hypoproteinemia (OR =1.246,95％ CI 1.133 ～ 1.369) and low pediatric critical illness score (OR =1.086,95 ％ CI 1.008 ～ 1.169).Conclusion The risk factors related to mortality of children with deep fungal infection in PICU were immunosuppressive,mechanical ventilation,hypoproteinemia and low pediatric critical illness score.

Objective To investigate the mechanism of neural protection of mouse nerve growth factor combined with sub-hypothermia in the treatment of patients with severe traumatic brain injury. Methods 90 cases of severe traumatic brain injury were randomly divided into study group and control group with 45 cases of each group, the control group were given routine treatment; the study group were given on the basis of routine treatment of mouse nerve growth factor combined with sub-hypothermia treatment, with 2 weeks treatment, the clinical indicators and corresponding nerve injury, inflammation, oxidative stress indexes, clinical effect and complications were compared after 2 weeks treatment. Results Compared with before treatment or control group, scores of Glasgow coma scale (GCS) and Glasgow outcome scale (GOS) and montreal cognitive assessment (MoCA) in study group after the treatment increased, National Institute of Health stroke scale (NIHSS) score decreased(P<0.05), neuronspecific enolase (NSE), myelin basic protein (MBP) and S100 beta levels decreased(P<0.05), the serum tumor necrosis factor-α (TNF-α),interleukin-6 (IL-6), IL-10 levels decreased (P<0.05), the malondialdehyde (MDA) decreased, the glutathione peroxidase (GPx) and oxidation resistance (AOA) levels increased (P<0.05). The control group efficiency was 73.33%, the study group efficiency was 91.11%, there was significant difference (P<0.05). All patients were followed up, no case off, there was no significant difference in adverse drug reaction rate between two groups. Conclusion Mouse nerve growth factor and sub-hypothermia has the significant neural protection for patients with severe traumatic brain injury, and its mechanism may be related to reduce nerve injury indicators and improve inflammatory factor and oxidative stress response.

Objective To improve the level of diagnosis and treatment of hilar cholangiocarcinoma by investgating it′s clinical characteristics.Methods The clinical data of 98 patients with hilar cholangiocarcinoma were analyzed retrospectively.Results According to the Bismuth-Corlitte grouping: typeⅠ,8 cases;typeⅡ,19 cases;type Ⅲ,17 cases;type Ⅲb,14 cases;and type Ⅳ,40 cases.Radical resection(49),palliative operation(12),endoscopic retrograde biliary drainage(16),and PTCD(5) were performed The median survival time of radical resection group was 28.6 months and the survival rate at 1,2,3,and 5 years was 74.2%,65.3%,37.5%,and 3.9% respectively,while the median survival time of palliative operation group was 17.6 months and the survival rate at 1,2,3,and 5 years was 71.7%,26.8%,8.9%,and 0% respectively.The median survival time of endoscopic retrograde biliary drainage group was 4.5 months and the survival rate at 1,2,3,and 5 years was 21%,13%,and 0% respectively.Conclusions Early diagnosis by adjunctive examinations is vital to treatment of hilar cholangiocarcinoma.Radical resection is the sole procedure to improve the outcome and prognosis of hilar cholangiocarcinoma.Multiple therapeutic methods should be adopted and should be individualized.

Objective To investigate the effects of low dose radiation on the level of oxidative damage and antioxidant in population of high background radiation area of Guangdong.Methods A total of 48 male residents who lived in high background radiation area(HBRA) of Guangdong province and 48 male residents who lived in neighboring Enping control area were chosen as the objectives and control respectively.The peripheral venous blood of two groups was collected,and then the levels of 8-OHdG and TrxR were determined by enzyme linked immunosorbent assay (ELISA).Results Compared with the CA group [(315.39 ± 100.59) ng/ml],the level of 8-OHdG [(272.64 ± 96.85) ng/ml] decreased significantly in HBRA (t =2.121,P ＜0.05).Compared with the CA group [(0.467 ±0.056) ng/ml],the level of TrxR [(0.496 ± 0.044) ng/ml] increased significantly in HBRA (t =-2.823,P ＜ 0.05).The results of multiple linear regression analysis demonstrated that the chronic exposure to low dose of radiation had significant effects on the expression level of 8-OHdG and TrxR (t =-2.327,2.367,P ＜ 0.05) after adjustment for confounding factors such as age,drinking,tea drinking,smoking,medical exposure and stressful events.Conclusions Chronic exposure to low dose radiation may decrease the level of oxidative and enhance the level of antioxidant.

BACKGROUND:As mesenchymal stem cells are commonly used as seed cells in studies of regenerative medicine and tissue engineering, the regulatory mechanism of their biological characteristics is a current research focus. OBJECTIVE:To summarize the regulations of Wnt signaling pathway on proliferation, senescence and differentiation of mesenchymal stem cells. METHODS:PubMed database and CNKI database were retrieved by computer using the key words of“mesenchymal stem cells, Wnt signaling pathway, proliferation, senescence, differentiation”in Chinese and English, respectively, between 2002 and 2014. Final y, 44 articles were included in result analysis. RESULTS AND CONCLUSION:Wnt signaling pathway is widely involved in the regulations of the biological characteristics of mesenchymal stem cells. Canonical Wnt signaling pathway reveals a bi-directional regulation effect on cellproliferation and osteogenic differentiation, and enhances senescence and neural differentiation, but inhibits adipogenic differentiation;non-canonical Wnt signaling pathway enhances senescence and osteogenic differentiation, and inhibits proliferation and adipogenic differentiation of mesenchymal stem cells, but it takes no part in neural differentiation of mesenchymal stem cells. So the regulations of Wnt signaling pathway on the biological characteristics of mesenchymal stem cells can be used as the new therapeutic targets of bone tissue engineering, nerve injury repair, and so on.