Cystadenocarcinoma, Mucinous ; pathology ; surgery ; Cystadenocarcinoma, Serous ; pathology ; surgery ; Female ; Humans ; Lymphatic Metastasis ; Neoplasm Invasiveness ; Ovarian Neoplasms ; pathology ; surgery ; Ovariectomy ; methods ; Prognosis

Objective To provide reliable and scientific data for supervision assessment and control of regional ambient air quality in Beijing through the investigation of ambient air quality in Chaoyang District. Methods Three local regions of Chaoyang Park Dabeiyao and Dongzhimen were selected as the measurement areas the determinations of air quality of consecutive 5 days and 4 times a day8 00 12 00 16 00 20 00 were conducted 6 items were included PM10 CO NO2 SO2 and negative ion concentration. Results The daily averages of CO and SO2 were lower than level 2 standard limitation for 5 days’ measurement in 3 regions. 2 of 5 days the daily average of NO2 in Dongzhimen exceeded the standard limitation0.01 mg/m3. 2 of 5 days the daily average of PM10 in 3 regions exceeded the standard limitation  0.01- 0.04 mg/m3. Conclusion Preliminary analysis was carried out based on ambient air quality data in 3 local regions the air pollution often emerged on some days in Beijing. The supervision and control should be conducted according to the characters of regional environmental quality pollution and meteorology.

Objective To evaluate the effects of dexmedetomidine-propofol-fentanyl combined anesthesia on somatosensory evoked potentials (SEPs) and motor evoked potentials (MEPs) in patients undergoing cervical spine surgery. Methods Thirty-six patients undergoing cervical spine surgery were randomly divided into 2 groups (n = 18 each): propofol-fentanyl combined anesthesia group (group C) and dexmedetomidine-propofol-fentanyl combined anesthesia group (group D). Anesthesia was induced with TCI of propofol and iv injection of fentanyl.After the consciousness disappeared, a laryngeal mask airway was placed and the patients were ventilated. In group D, dexmedetomidine 0.5 μg/kg was injected over 10 min after the consciousness disappeared, followed by an infusion at a rate of 0.5 μg·kg-1 ·h-1 until the end of surgery. In group C, the equal volume of normal saline was administered instead of dexmedetomidine. SEPs (P15-N20) amplitudes and latency were measured and recorded before dexmedetomidine administration and at 10 min of dexmedetomidine infusion. The no-elicitation of MEPs was recorded. Results Compared with group C, there was no significant difference in P15-N20 amplitudes and latency in group D. The no-elicitation rate of MEPs in two groups was 0. Conclusion Dexmedetomidine-propofol-fentanyl combined anesthesia does not affect SEPs and MEPs in patients undergoing cervical spine surgery.

Objective To investigate the effect of dexamethasone on expressions of angiopoietin-1,2 (Ang-1,2) in rats with acute lung injury induced by phosgene.Methods A total of 36 SD rats were randomly (random number) divided into 3 groups:normal control group that consisted of the rats with air exposure,phosgene group that consisted of the rats with exposure to 8.33 mg/L phosgene (purity 100％,of the same volume as the inhaled air in the normal control group) for 5 minutes and dexamethasone group that consisted of the rats with caudal vein injection of 2.5 mg/kg dexamethasone an hour before exposure to the same dose of phosgene.Wet and dry ratio of the lung (W/D) was calculated,and leukocyte count and total protein content of bronchoalveolar lavage fluid (BALF) were recorded 2 hours later.The concentrations of Ang-1,2 in the serum and BALF were measured by enzyme-linked immunosorbent assay (ELISA).Reverse transcription-polymerase chain reaction (RT-PCR) was used to determine the mRNA levels of Ang-1,2 and Tie-2 in the lung tissue.The protein expression of Ang-1,2 and Tie-2 in the lung tissue were quantified by Western blot.Results Compared with phosgene group,the lung W/D,protein content of BALF and WBC count in dexamethasone group were significantly decreased (P ＜ 0.01).Compared with normal control group,Ang-1 and Tie-2 expressions in phosgene group were significantly decreased (P ＜ 0.01).Compared with phosgene group,the serum,BALF and lung tissue of Ang-1 and Tie-2 expressions in dexamethasone group was significantly increased (P ＜0.01).Compared with normal control group,the serum,BALF and lung tissue of Ang-2 expressions in phosgene group were significantly increased (P ＜ 0.01).Compared with phosgene group,the serum,BALF and lung tissue of Ang-2 expressions in dexamethasone group were significantly decreased (P ＜ 0.05,P ＜ 0.01).Conclusion Dexamethasone has a beneficial effect on acute lung injury induced by phosgene in rats by inhibition of Ang-2 and increase in Ang-1 and Tie-2 expressions.

Objective To investigate the anti-hepatocarcinoma(anti-HCC) function of HLA-A2-restricted point-mutated Survivin peptide induced CTLs.Methods The HLA-A2-restricted Survivin nonapeptides were evaluated using bioinformatics software.The binding affinity of Survivin peptide to HLA-A2 molecular was determined with flow cytometry analysis.After peptide-induced CTLs were generated in vitro,flow cytometry and ELISA were performed to detect the levels of IFN-γ,which were secreted by reactive CTLs.Peptide-induced CTLs were co-cultured with hepatoma cell lines HepG2 and BEL-7402.The rates of tumor cells lysis were assayed using CytoTox 96(R) and the morphological changes of tumor cells were observed with inverted phase contrast microscope.Results Point-mutated Survivin nonapeptide Sur79M2 (KMSSGCAFL) was filtered out,which was shown higher scores compared with the wild-type peptide Sur79.Consistent with the results of software analysis,Sur79M2 showed higher binding ability in T2 binding assays.At the same time,Sur79M2-induced CTLs could release a large number of IFN-γ after incubated with target cells rather than Sur79.When co-cultured with HCC cell lines HepG2 and BEL-7402,Sur79M2-induced CTLs effectively lysis HepG2 on HLA-A2-restricted manner without killing effect on BEL-7402 that do not express HLA-A2 molecules.Conclusion Sur79M2 could elicited specific cytotoxic T lymphocytes in vitro,which were able to specifically kill HCC cell lines on HLA-A2-restricted manner.

Objective To study the clinicopathologieal features and expression of cyclin D1 and p53 in epithelial ovarian tumors,and to investigate the correlation between pathogenesis of ovarian cancer and epithelial borderline tumors.Methods Fifty four cases of ovarian borderline tumors and 45 cases of ovarian carcinomas from the People's Hospital,Peking University were reviewed retrospectively.The clinical data and pathological findings were analyzed.Immunohistochemical study of cyclin D1 and p53 was performed in all 99 cases.Results(1)In borderline tumors,the age of patients ranged from 14-82 (mean age=42.5)years.International Federation of Gynecology and Obstetrics(FIGO)stage of borderline tumors was stage Ⅰ in 48 cases,stage Ⅱ in 3 cases,and stage Ⅲ in 3 cases.In ovarian carcinomas,the age of patients ranged from 26-80(mean age=53.5)years.FIGO stage of carcinoma was stage Ⅰ in 6 cases, stage Ⅱ in 8 cases,stage Ⅲ in 26 cases,and stage Ⅳ in 5 cases.In follow-up of 54 cases with borderline tumors the 5-year survival rate was 98% and of 45 cases with carcinomas a 5-year survival rate of 51% was noted.(2)In 54 cases of borderline tumors,mucinous types accounted for 56%(30/54)and serous types accounted for 30%(16/54).There were 5 cases with micropapillary pattern,3 cases with peritoneal implants,3 cases with lymph node involvement,6 cases with microinvasion,one case with intraepithelial carcinoma,and one case with mural nodules.In 45 cases of carcinomas,serous carcinoma was the most (49%,22/45).The remainder included 3 cases of mucinous types,8 cases of endometrioid types,6 cases of transitional cell types,3 cases of mixed phenotype and 3 cases of undifferentiated types.(3) Overexpression of cyclin D1 and p53 was observed in 31%(14/45)and 56%(25/45)of ovarian carcinomas, respectively.There was a significant association between p53 overexpression and tumor grade.In the borderline tumor group,69%(37/54)had overexpression of cyelin D1 and 6%(3/54)had overexpression of p53.There were significant differences in expression of cyclin D1 and p53 between conventional serous borderline tumors and high-grade serous carcinomas(cyclin D1:91% vs 26%;p53:0 vs 58%).However, micropapillary serous borderline tumors and low-grade serous carcinomas showed remarkably similar expression of cyelin D1 and p53.Conclusions Epithelial ovarian borderline tumors are distinct from ovarian cancer in clinical progress and prognosis,and histological types.Overexpression of cyclin D1 is common in ovarian borderline tumors and low grade carcinomas.And overexpression of p53 is more common in high grade ovarian carcinomas.Conventional serous borderline tumors are distinct from high-grade serous carcinomas in pathogenesis.Micropapillary serous borderline ovarian tumors may be closely related to low grade serous carcinomas.

Objective:To investigate the effect of paraformaldehyde fixation on measuring the protein-protein interaction by fluorescence resonance energy transfer(FRET)to resolve the problem of FRET efficiency calculation in excess-movement cells.Methods:The C terminals of TCR ? chain(TRA)and TCR ? chain(TRB)genes,which were ideal for protein-protein interaction research,were fused with ECFP and EYFP gene respectively by fusion PCR and transferred into target cell.A grou Pcells were fixed in paraformaldehyde(0.5%)for 0.5~1h and another left alive,then these cells were subject to ECFP/EYFP FRET calculation with confocal laser scanning microscope.The ECFP/EYFP FRET efficiencies in live and fixed cell were analyzed and compared.Results:There is no significant statistical difference between the ECFP/EYFP FRET efficiencies of live cell and cell fixed with lower paraformaldehyde concentration and shorter incubation time.Conclusion:fixation with low-concentration paraformaldehyde and short-time incubation has no distinct influence on measuring protein-protein interaction,and facilitated the FRET calculation in excess-movement cells.

The attenuated Chinese equine infectious anemia virus (EIAV) vaccine is the first lentiviral vaccine that provides solid protective immunities to vaccinated horses. To investigate properties of EIAV vaccine, especially the relationship between its replication and the immunity, viral plasma loads of an EIAV vaccine strain EIAVFDDV in immune suppressed horses were detected. Three horses, which were immunized with EIAVFDDV for 16 months, were treated with dexamethasone for 14 days to suppress their immunities. Reduced immune response in these animals was confirmed by significantly declined lymphocyte proliferation rate detected after 10 days of the drug treatment. The plasma viral loads of EIAVFDDV, which was indicated by the genomic RNA copy numbers, in horses before and after the treatment of dexamethasone were monitored by real time RT-PCR. Results revealed that the viral plasma loads in two of three immune-suppressed horses were kept a steady low level around 103～ 104 copies/ml. The load was increased by 10 folds in the third horse, but was still among the standard levels for EIAVFDDV vaccinated horses. As a positive control, the viral copy number of an asymptomatic carrier of EIAV virulent strain EIAVLiao was jumped nearly 25 000-fold higher after being treated with dexamethasone. The typical clinical symptoms of EIA, characterized by febrile episodes and thrombocytopenia, were also appeared in this horse. These results clearly indicate that it is the unique biological feature of the attenuated EIAV vaccine, but not the immunity, resulted in EIAVFDDV remaining in low levels in the body harmlessly. In addition, the steady low level of viremia and the inability to cause clinical symptoms of EIAVFDDV in immune-suppressed hosts further demonstrated the safety of attenuated Chinese EIAV vaccines. The data provide a new sight for studies on the immunity to lentiviruses.

ObjectiveTo investigate the effect ofHuayu-Niaoshidecoction on renal injury in the patients with kidney stones after extra corporeal lithotripsy (ESWL). MethodsAccording to the inclusion criteria, 120 patients diagnosed with kidney stones were randomly divided into 2 groups with the random number table method, 60 patients in each group. Both groups were treated with double pulse extracorporeal shock wave lithotripsy (ESWL). Based on the ESWL, the control group was added with levofloxacin mesylate tablets for 3 days with the start of the day of the gravel; and the treatment group was treated withHuayu-Niaoshi decoction for 14 days based on the treatment of control group. The levels of serum endothelial endothelin 1 (ET-1), malondialdehyde (MDA), urinary N-acetyl-β-Dglucosaminidase (NAG) N-acetyl-beta-d Glucosaminidase and urine beta 2 microspheres protein (beta eukaryotic 2-mg) were detected at time of gravel, 2 hours after gravel and 2 weeks after gravel. ResultsAfter 2 weeks treatment, the levels of urinary NAG (7.33 ± 4.39 U/L vs. 9.93 ± 5.10 U/L;Z=2.587,P=0.002), serum MDA (4.63 ± 0.90 nmol/mlvs. 7.29 ± 2.16 nmol/ml;Z=5.520, P=0.001), serum ET-1 (35.06 ± 10.51 pg/mlvs. 46.90 ± 18.74 pg/ml;Z=3.315,P=0.001) and urineβ2-MG (0.14 ± 0.19) mg/Lvs. 0.19 ± 0.19 mg/L;Z=1.759,P=0.079) in the treatment group were significantly lower than those in the control group. Conclusions TheHuayu-Niaoshidecoction can improve renal injury in the patients with
kidney stones after extra corporeal lithotripsy.

OBJECTIVETo investigate effect of tumor necrosis factor-alpha (TNF-alpha) on the Src-suppressed C kinase substrate (SSeCKS) in C6 glioma cells.

METHODSCultured C6 glioma cells were randomly divided into two groups. In time-dependent group, cells were cultured with TNF-alpha (2 ng/mL) for 0 h, 1 h, 3 h, 6 h, 12 or 24 h, respectively; in dose-dependent group, cells were cultured with TNF-alpha (0 ng/mL, 0.02 ng/mL, 0.2 ng/mL, or 2 ng/mL) for 6 h. The expression of SSeCKS was detected by Realtime PCR and Western blot analysis, and immunocytochemistry was used to investigate SSeCKS's subcellular localization.

RESULTSTNF-alpha induced rapid phosphorylations of protein kinase C (PKC) substrates in C6 glioma cells, and upregulated SSeCKS expression in a time and concentration dependent manner. Immunocytochemistry suggested that SSeCKS was localized in the cyroplasm and the leading end of podosomal extensions in control groups, while TNF-alpha induced translocation of SSeCKS perinuclear. This effect could be partly reversed by PKC inhibitor Ro-31-8220.

CONCLUSIONTNF-alpha activates PKC and upregulates SSeCKS expression in C6 glioma cells. These effects are associated with PKC activity, suggesting that SSeCKS plays a role in response to glia activation in PKC mediated pathway.

A Kinase Anchor Proteins ; Animals ; Astrocytes ; metabolism ; Brain Neoplasms ; metabolism ; Cell Cycle Proteins ; metabolism ; Dose-Response Relationship, Drug ; Enzyme Activation ; Gene Expression Regulation ; Glioma ; metabolism ; Immunohistochemistry ; Protein Kinase C ; metabolism ; Protein Transport ; physiology ; Random Allocation ; Rats ; Signal Transduction ; physiology ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha ; administration & dosage ; physiology