ObjectiveTo investigate the expression of AP-1 in pancreatic tumor cells and its clinical significance.MethodsSelected the paraffin-embedded specimens from the tumor tissues of 35 patients with pancreatic cancer(study group) and 35 pancreatic tissue of healthy people(control group),and double antibody sandwich ABCELISA detection of AP-1 was carried out,two sets of specimens C-JUN and C-FOS expression was observed.ResultsObservation group C-JUN and C-FOS expression positive rates were 80.00％ 71.43％,control group,C-JUN and C-FOS expression positive rates were 22.86％,28.57％,there was a significant difference between the two groups.ConclusionAP-1 was highly expressed in pancreatic cancer,which could guide clinical take reasonable interventions to slow tumor development.

AIM:To investigate the role of Herceptin in the apoptosis and drug sensitivity of endometrial canc -er Ishikawa cells .METHODS: The IC50 values of Herceptin , adriamycin ( ADR ) , cisplatin ( DDP ) and paclitaxel ( PTX) for Ishikawa cells were detected by MTT method .Ishikawa cells were treated with single drug and combined chemo-therapy for 24 h, the cell cycle and the apoptosis ratio were determined by flow cytometry .RESULTS:The IC50 values of Herceptin, ADR, DDP and PTX were 57.12 mg/L, 0.572μmol/L, 67.4μmol/L and 719.5 nmol/L, respectively.Her-ceptin significantly enhanced the cytotoxicity of the chemotherapeutic drugs , and increased apoptosis ratio statistically . CONCLUSION:Herceptin enhances the apoptosis-inducing ability of the chemotherapeutic drugs and improves the che-motherapeutic sensitivity in Ishikawa cells .

Objective To investigate the effects and mechanism of different doses of rosuvastatin on expression of tissue factor(TF) in cultured human monocyte-macrophage cells which were induced by oxidized low density lipoprotein (ox-LDL).Methods The human monocyte-macrophage cells were divided into seven groups:control group,ox-LDL group,poly-insine monophosphate group,different doses of rosuvastatin group(0.01 μmol/L,0.1 μmol/L,1 μmol/L,5 μmol/L).The expression of LOX-1 mRNA and TF mRNA was assayed by RT-PCR.The enzyme-linked immunosorbent assay was performed to determine the protein concentration of TF.Results Effects of different doses of rosuvastatin on expressions of LOX-1mRNA,TF mRNA and TF in cultured human monocyte-macrophage cells induced by ox-LDL:comparison among seven groups,the difference was statistically significant (F =91.334,58.833,103.552,P ＜0.05).Compared with control group,the expressions of LOX-1 mRNA,TF mRNA and TF were increased in the ox-LDL group[(3.25156 ± 0.15772) vs (1 ±0) ;(2.522451 ±0.138967) vs (1 ±0) ;(207.7233± 1.154701)ng/L vs (184.8467 ± 0.871799)ng/L],and they were in a concentration-dependent manner (P ＜ 0.05).Compared with the PolyⅠ group and the different doses of rosuvastatin group,the expressions of LOX-1 mRNA,TF mRNA and TF were in the ox-LDL group,and the different doses of rosuvastatin were decreased by dose-dependent manner.It was in a concentration dependent manner (P ＜ 0.05).Different doses of rosuvastatin were compared between groups (between each group P ＜ 0.05),the difference between each two groups was statistically significant (P ＜ 0.05).Conclusions LOX-1 may be responsible for the expression of TF in Human monocyte-macrophage cells induced by ox-LDL.Rosuvastatin by dose dependent manner and by means of ox-LDL reduced monocyte-macrophage LOX-1 mRNA and TF mRNA expressions,which reduced expression of TF.

Objective To explore the clinical value of the Luo’s fornix cup in laparoscopic total hysterectomy. Methods A total of 7 patients with indications for hysterectomy from October 2004 to February 2005 was given laparoscopic total hysterectomy. During the operation, the Luo’s fornix cup was used for the orientation and dilatation of the vaginal fornix. Then the anterior vaginal fornix was circlewise incised by using a harmonic hook to extract the Luo’s fornix cup. Afterwards the posterior fornix was opened to remove the uterus by way of the vagina. And finally the vaginal stump was closed. Results All the operations were successfully completed. The operation time was 90~250 min. With the use of the Luo’s fornix cup, the operator could easily identify the top of the vaginal fornix, and avoid the damage of important neighbouring organs. No injuries of bladder, ureter, and rectum were noted. Conclusions The Luo’s fornix cup is a rational accessory instrument in laparoscopic hysterectomy, being worthy of recommendation.

OBJECTIVE:To study the correlation of inorganic elements and active ingredients in Paris polyphylla. METH-ODS:HPLC was adopted for contents determination of polyphyllinⅠ,Ⅱ,Ⅵ and Ⅶ:the column was Phenomenex C18 with mo-bile phase of acetonitrile-water(gradient elution)at a flow rate of 1.0 ml/min,detection wavelength was 203 nm,and column tem-perature was 30 ℃. ICP-MS was adopted for contents determination of Na,Mg,K,Ca,Cr,Mn,Fe,Ni,Zn,Se,Sr,Mo,Pb, Cd,Hg,Cu and As:RF power was 1.55 kW,sampling depth was 10 mm,the plasma gas flow was 15.0 ml/min,carrier gas flow rate was 0.86 L/min,spray chamber temperature was 2 ℃,helium collision mode was He,gas flow was 4.5 ml/min,measurement points/peak was 6,sampling mode was hopping peak collection(repeated 3 times). And SPSS 21.0 software was adopted for step-wise regression analysis of correlation between the two above-mentioned. RESULTS:The linear range was 0.939-4.697 μg(r=0.999 8)for polyphyllinⅠ,1.124-5.620 μg(r=0.999 6)polyphyllinⅡ,0.784-3.918 μg for polyphyllin Ⅵ,0.976-4.880 μg for poly-phyllinⅦ.RSDs of precision,stability and reproducibility tests were lower than 2%,recoveries were 96.53%-100.71%(RSD=1.69%,n=6) for polyphyllinⅠ,98.19%-99.55%(RSD=0.58%,n=6) forⅡ,95.45%-100.83%(RSD=1.87%,n=6) for poly-phyllin Ⅵ,96.11%-102.01%(RSD=2.07%,n=6)for polyphyllin Ⅶ . The linear range was 0-195.984 3 mg/kg(r≥0.999 3),de-tection limit was no higher than 65.201 ng/kg. PolyphyllinⅠshowed positive correlation with Mg and negative correlation with Pb;polyphyllin Ⅱ showed positive correlation with Cu and negative correlation with As;polyphyllin Ⅵ showed positive correlation with Sr and Hg and negative correlation with Mn;polyphyllin Ⅶ showed positive correlation with Na and Ni and negative correla-tion with As;the total contents of the 4 polyphyllins showed positive correlation with Ni and Sr and negative correlation with Fe. CONCLUSIONS:The contents of inorganic elements and P. polyphylla have certain correlation with active ingredient.

Objective To observe the influence of bezafibrate on the apoptosis and expression of lectin-like oxidized low density lipoprotein receptor-1(LOX-1) mediated by oxidized low density lipoprotein(ox-LDL) in cultured human umbilical vein endothelial cells(HUVECs).Methodes The apoptosis of HUVECs mediated by ox-LDL were evaluated by flow cytometry and the expression of LOX-1 mRNA were detected by RT-PCR.Results Compared with the control group,ox-LDL could increase apoptosis and the expression of LOX-1(P<0.05),and Bezafibrate could decrease the apoptosis and the expression of LOX-1 in a concentration -dependent manner(P<0.05).Preincubation of HUVECs with polyinosinic acid for 2 hours,the apoptosis and the expression of LOX-1 decreased(P<0.05).Conclusions Bezafibrate inhibits the apoptosis of HUVECs mediated by ox-LDL by reducing the expression of LOX-1,which may be part of the reasons for bezafibrate to prevent and treat atherosclerosis.

0.05);The other way round,aged rats(OM group)show themselves a heighten expression of Th1-Th2-Th3(P

Objective To investigate the effects of different doses of rosuvastatin on expression of liver X receptor(LXR) and caveolin-1 in cultured human monocyte-macrophage cells which induced by oxidized low density lipoprotein (ox-LDL).Methods The human monocyte-macrophage cells were divided into six groups:control group,ox-LDL group,different doses of rosuvastatin group (0.01 μmol/L,0.1 μmol/L,1 μmol/L,5 μmol/L).The expression of LXR mRNA and caveolin-1 mRNA were assayed by RT-PCR.Results LXR mRNA expression induced by ox-LDL in the control group and ox-LDL group were 1.00 ± 0.02,0.26 ± 0.02,and the difference was significant (t =56.39,P ＜ 0.001).Meanwhile,caveolin-1 mRNA expression in ox-LDL is (0.27 ± 0.01) fold than that in control (t =31.27,P ＜ 0.001).Meanwhile,There were significant differences among ox-LDL group and the different doses of rosuvastatin group in terms of LXR mRNA and caveolin-1 mRNA expressions (F =72.154,66.007,P ＜ 0.001).Along with the increase the doses of rosuvastatin,there was an increased trends of LXR mRNA and caveolin-1 mRNA expressions (P ＜ 0.05).Conclusion Rosuvastatin and upregulated the LXR mRNA and caveolin-1 mRNA expressions in a dose dependent manner.

Objective To investigate the effects,mechanisms,and the optimum doses of Rosuvastatin and Losartan on expression of caveolin-1 in cultured human monocyte-macrophage cells which were induced by oxidized low density lipoprotein(ox-LDL).Methods Human-monocyte cells were separated and changed into the human monocyte-macrophage cells.The model of amerosclerosis was set up.These cells were incubated in different doses of Rosuvastatin(0.1,1.0,5.0 μmol/L) and Losartan (10,50,100 μmol/L),and then cultured in combination of two drags (5.0 μmol/L + 100 μmol/L).Expression of caveolin-1 mRNA was determined with real-time fluorescent quantitative polymerase chain reaction (RT-PCR).Results In ox-LDL group,caveolin-1 mRNA was decreased sharply relative to control group [(0.2533 ±0.00973) vs (0.9410 ±0.03677)] in a concentration-dependent manner (P ＜0.01).Compared to ox-LDL group,expressions of Caveolin-1 mRNA were increased gradually in different doses of Rosuvastatin alone and Losartan alone group [(0.5198 ± 0.04840),(0.6183 ± 0.06740),(0.7257 ± 0.03052) vs (0.2533 ± 0.00973) ; (0.3350 ± 0.04177),(0.4428 ± 0.03804),(0.6049 ± 0.02627) vs (0.2533 ± 0.00973)] in a concentration-dependent manner (P ＜ 0.01) ; the summit expressions of caveolin-1 mRNA were emerged in using Rosuvastatin and Losartan together (F =59.119,P ＜ 0.01).Conclusions Rosuvastatin and Losartan may be responsible for the expression of caveolin-1 in human monocyte-macrophage cells that were induced by ox-LDL.The expressions were up-regulated with dose dependent manner of these drugs,and got the crest stage when using optimum doses of Rosuvastatin and Losartan together.

AIM: To investigate the relationship between up-regulation of plasminogen activator inhibitor-1 (PAI-1) expression and activation of p38 mitogen-activated protein kinase (p38 MAPK) and extracellular signal-regulated kinase ( ERK) pathways by TGF-β1 in human ovarian cancer cells .METHODS: PAI-1 expression in human ovarian cancer cells treated with TGF-β1 (10 μg/L)was assayed by real-time PCR and Western blotting.The activation of p38 MAPK and ERK was determined by Western blotting using phosphorylated p 38 MAPK and phosphorylated ERK antibodies . Specific p38 MAPK inhibitor (SB203580) or ERK inhibitor (PD98059) was used to inhibit their activation .RESULTS:TGF-β1 up-regulated the expression of PAI-1, and activated p38 MAPK and ERK pathways in the ovarian cancer cells .In-hibition of p38 MAPK activation by SB203580 resulted in significant inhibition of the mRNA expression of PAI-1 induced by TGF-β1.However, inhibition of ERK activation did not significantly alter TGF-β1-induced increase in PAI-1 mRNA level.CONCLUSION: TGF-β1-activated p38 MAPK pathway contributes to the up-regulation of PAI-1 expression by TGF-β1 in ovarian cancer cells .