Objective To investigate the expression pattern of Placental growth factor (PlGF) and regulatory effects of interleukin-6 (IL-6)on PlGF expression in the primary cultured trophoblast cells. Methods Cytotrophoblast cells werecollected by trypsin-collagenase digestion and Percoll gradient centrifugation for primary culture. Reverse transcriptase polymerase chain reaction(RT-PCR) were resorted to demonstrate the expression pattern of PlGF mRNA in trophoblast cells cultured in vitro. The effects of IL-6 with different concentration(100,10,1 and 0.1 ?g/L) and duration (6,12,24 and 48 h) on PlGF expression were observed. Results The 185 bp and 248 bp bands of PlGF were showed by RT-PCR. PlGF expression correlated with IL-6. PlGF began to increase at 6 h, and reached the climax at 12 h when recultured with 100 ?g/L IL-6. Conclusions PlGF expression has time and dose dependance on IL-6. It may play an important role in early pregnancy.

ObjectiveTo observe the dynamic changes of blood perfusion and hypoxic status by CT perfusion imaging and hypoxia imaging in patients with non-small cell lung cancer (NSCLC) after treatment with recombinant human endostatin (RHES). MethodsA total 15 patients with NSCLC were randomly divided into treatment group (n = 10) and control group (n = 5). The patients in treatment group continuouly received the treatment with RHES (7.5 mg/m2) by intravenous infusion for ten days, and CT perfusion imaging and hypoxia imaging were performed at day 1, 5 and 10,respectively. The time window' was observed with the blood perfusion status and hypoxic changes.ResultsIn the treatment group, capillary permeability surface (PS) and tumor to normal tissue (T/N) were firstly decreased, and then increased. Their lowest points occurred at about the fifth day. PS showed statistical significance compared with the first day (q1.5 = 12.05, P＜0.01 ) and no significance compared with the tenth day(q10.5 = 2.79, P=0.69), while T/N showed a significant difference between above time points (q1.5 = 73.81, q10.5 = 20.6, P = 0.00).Blood flow (BF) was firstly increased, and then decreased.Its highest point appeared at about the fifth day with statistical significance compared with the first and tenth day (q1.5 = 12.29, q10.5 = 10.48, P＜0.01 ). All the PS,BF and T/N between the fifth day in treatment group and the control group showed statistically significance (all P ＜ 0.01 ).Conclusions The time window of recombinant human endostatin improving blood perfusion and hypoxic status in non-small cell lung cancer is within about one week after administration.

Objective To investigate the changes of stress response on inhalation-intravenous general anesthesia during pericystectomy for Liver hydatid cyst. Methods Thirty ASA I-II patients with liver hydatidosis for pericystectomy were studied. The blood from right jugular vein were collected for measurement of serum cortisol (Cor) concentrations and glucose (BG) levels, and MAP, HR and BIS were observed and recorded at different point-times: pre-intubation for 1 min, post-intubation for 3 min, pre-incision for 1 min, post-incision for 3 min, post-incision for 10 min, post-surgical exploration 10 min. The data of pre-intubation and pre-incision served as controls. Results The levels of Cor concentration of post-incision for 10 min were decreased than those of pre-intubation and pre-incision (P<0.05); MAP of post-incision for 10 min and post-surgical exploration for 10 min were increased than those of pre-intubation and pre-incision (P < 0.01); For HR, the data of post-surgical exploration 10 min was much quicker compared with pre-incision (P < 0.01), which is slower than that of pre-intubation(P<0.01). Conclusion Inhalation-intravenous general anesthesia may inhibit the stress response during intubation,incision and surgical exploration for liver hydatidosis pericystectomy. Hemodynamic changes during incision may reflect the trend of stress response in advance.

AIM:To prepare the Lyophiled Royal Jelly Soft Capsule and study its stability and Influential factors.METHODS:The suspending agent and processing method were optimized using sedimentation volume rate as the index.Soft capsules were prepared and product stability under high temperature and high humidity environment was studied according to the determination of the content of 10-HAD by HPLC.RESULTS:The finished product yield in pilot test was more than 90%,the soft capsule products stored in cold were stable,while those stored under room temperature or high temperature and high humidity were unstable with a noticeable decrease in quality.Water content in capsule shell affects the 10-HDA content of the finished product.CONCLUSION:The preparative process is feasible and the products should be storaged in cold enviroment.

ObjectiveTo investigate the radiosensitizing effect of 3-(5'-hydroxy-2'-furyl)-1-benzyl indazole ( YC-1 ) on hypoxic human adenocarcinoma cell line A549.MethodsMTT assay was used to test the inhibitory effect of YC-1 on proliferation of A549 cells.Clonogenic assay was performed to determine the radiosensitizing effect of YC-1 on hopxic A549 cells.Single-hit multi-target model was used to plot survival curve and calculate sensitization enhancement ratio (SER).The cell cycle and apoptosis were measured by flow cytometry.ResultsThe proliferation of A549 cells was inhibited by YC-1 in a time-dose-dependent manner.In normoxic and hypoxic cells,the IC20 was 16.7 μmol/L and 39.2 μmol/L at 24 h,respectively.In the group of hypoxia plus YC-1,SERD0 and SERDq were 1.11 and 1.26,respectively.In hypoxia,YC-1combined with 2 Gy irradiation could induce cell apoptosis and prolong G2 + M phase arrest ( ( 30.17 ±1.21 )％ ∶ ( 15.44 ±0.96) ％,P =0.000; (21.56 ±0.47 )％ ∶ (6.16 ±0.16)％,P =0.000).Concinsions YC-1 could enhance the radiosensitivity of hypoxic A549 cells.

Objective To investigate the therapeutic effects of recombinant human endostatin (RHES) combined with radiotherapy on brain metastases (BM) of non-small cell lung cancer (NSCLC) and the patients suitable for this therapy.Methods Eighty patients with BM of NSCLC were randomly divided into RHES combined with radiotherapy group (combination group) and radiotherapy alone group (each group with 40 patients).The short-term effective rate,overall survival time,cerebral edema index and adverse reactions were observed and the expressions of vascular endothelial growth factor receptor 2 (VEGFR2) protein in primary lesions were detected with immunohistochemical method in all patients.Results Compared with radiotherapy alone group,brain edema was significantly relieved (t=4.9,P=0.000) and there were no marked adverse reactions in combination group.In short-term effective rate,there was no statistical significance in total population (n=80,90％ vs.75％,x2=3.11,P=0.07),but there was statistical significance in the patients with positive VEGFR2 (93％ vs.67.7％,x2=6.31,P=0.012).In overall survival time,there was no statistical significance in total population (n=80,P=0.35,95％ CI:0.25-1.30) or in the patients with positive VEGFR2 (P=0.109,95％ CI:0.40-1.34).Conclusion Compared with radiotherapy alone,RHES combined with radiotherapy can relieve brain edema in the patients with BM of NSCLC and obtain better short-term effective rate in the patients with positive VEGFR2.

Objective To elucidate the expression of gankyrin in human gastric cancer cells and it's role in nimesulide induced apoptosis. Methods Four human gastric cancer cell lines including MKN28 (well differentiated), AGS (poorly differentiated), MKN45 (poorly differentiated), and SGC7901(moderately differentiated) were cultured and treated with nimesulide. Nimesulide induced growth inhibition and apoptosis of the cells were detected by methyl thiazolyl tetrazolium assay, and confirmed by flow cytometry. The expressions of gankyrin gene and protein were further assessed by real-time PCR and Western blotting. Results Gankyrin mRNA and protein were detected in all four human gastric cancer cell lines. The proliferations of AGS and SGC7901 cell lines were significantly suppressed by nimesulide in a time-dose dependent manner. When treated with 400 μmol/L of nimesulide for 48 hours, the significant apoptosis was found in AGS cells (23.30%±2.50%) and SGC7901 cells (16.80%±1.55% ) in comparison with controls (0.57%±0.19% and 0.88%± 0.17%, respectively, all P values <0.01). Apoptosis of AGS cells induced by nimesulide was accompanied by a considerably decreased gankyrin expression that was more significant at 24 hours (0.0035±0.0014) and 36 hours (0.0980±0.0160) in comparison with controls (0.4690±0.1190, all P values<0.01). Conclusion Gankyrin expresses in human gastric cancer cell lines and may be involved in nimesulide induced apoptosis of AGS cells.

Objective To study the expression of the tumor suppressor gene TSHR and pl6 in papillary thyroid carcinoma (PTC) and explore the relationship of the tumorigenesis and the promoter aberrant methylation of the two above genes. Methods RT-PCR was used to detect the mRNA expression of two tumor suppressor genes in 50 cases of PTC, 20 cases of nodular goiter and 12 cases of thyroid adenoma tissue. The promoter methylation status of the two genes were detected by methylation-specific PCR technique (MSP) (which of p16 by nested PCR). The promoter hypermethylation of the two genes was tested by randomly gene sequencing. Results Hypermethylation of promoter region were detected from 68.0 % (34/50) TSHR gene and 54.0 % (27/50) pl6 gene in PTC, while 21.9 % (7/32) and 15.60 % (5/32) in controls. The rate of promoter methylation in PTC was significantly higher than that in controls (χ2 = 16.61, P <0.05 vs χ2 =12.08 P <0.05). The relative mRNA expression of TSHR gene and pl6 gene were (0.41±0.11) and (0.51±0.17) in PTC, respectively, while those were (0.63 ±0.08) and (0.72 ±0.22) in controls, respectively. The mRNA expression of the TSHR gene and pl6 gene was obviously lower in PTC than that in controls (t = 3.86, P < 0.05 vs t =3.66, P <0.05). By the sequencing, it was confirmed that the CG in methylated promoter of the two genes was not changed, while the CG in unmethylated promoter was changed into TG. Conclusion Methylation of the TSHR gene and p16 gene in promoter region is a common molecule event and may be invovled in the genesis and development of human PTC.

Objective:To investigate the differences in efficacy, survival outcomes, and acute and late toxicities for patients with local/regional advanced nasopharyngeal carcinoma (NPC) treated by intensity-modulated radiotherapy (IMRT) in combination with che-motherapy (CT) and by IMRT alone. Methods:A total of 72 newly diagnosed local/regional advanced NPC patients were randomly subjected to IMRT/RT+adjuvant CT (after radiotherapy, RT) (n=42) or IMRT+adjuvant CT (after RT) (n=30). The Kaplan-Meier meth-od was used to analyze the two-year local/regional control rates, distant metastasis-free survivals, and overall survivals. The acute and late radiation toxicities were evaluated based on the toxicity criteria of the Radiation Therapy Oncology Group and European Organiza-tion for Research and Treatment of Cancer. Results:A median follow up period of 13.5 months was included in the study. The one-year and two-year local/regional control rates, distant metastasis-free survivals, and overall survival in the IMRT group were 95.0%, 80.0%, and 95.0%, and 80%, 60.0%, and 75.0%, respectively. For the IMRT+CT group, such rates were 100%, 96.4%, and 96.4%, and 100%, 92.9%, and 92.9%, respectively. The two-year local/regional control rate and distant metastasis-free survivals in the IMRT+CT group were higher than those in the IMRT group (P<0.05). Most patients had grade 1 to grade 2 acute radiation toxicities and grade 0 to grade 1 late radiation toxicities (P>0.05). No patient showed a grade 4 acute or late toxicity. The blood and gastrointestinal toxicity rates were high in the IMRT+CT group (P<0.05). Conclusion:The IMRT+CT treatment has potential advantages over the IMRT in the treatment of local/regional advanced NPC patients in terms of local/regional control and overall survival. The blood and gastrointestinal toxicity rates in the IMRT+CT group were higher than in the IMRT group but still within a tolerable range.

AIM:To investigate the mammalian target of rapamycin ( mTOR) signaling pathway as the center playing a role in the crizotinib-induced apoptosis of non-small cell lung cancer (NSCLC) cell line H2228, which represents positive echinoderm microtubule-associated protein-like 4 (EML4)-anaplastic lymphoma kinase (ALK) fusion gene. METHODS:H2228 cells were processed according to different purposes .Fluorescence quantitative PCR is used to ob-serve the gene states .MTT assay is used to detect the cell inhibition rates .The cell apoptosis and cell cycle were analyzed by flow cytometry .The expression and activation levels of the key proteins in the mTOR signaling pathway were determined by Western blotting .RESULTS:Crizotinib promoted the apoptosis of H 2228 cells in a time-and dose-dependent manner . Crizotinib blocked the H2228 cells staying at the G1 phase.In apoptotic H2228 cells processed with crizotinib, the activa-tion level of mTOR was decreased , and the activation levels of the key proteins in upstream and downstream of mTOR path -way were both declined .The expression level of the fusion protein EML 4-ALK variant 3 was not affected , but its active form of p-ALK was significantly suppressed .CONCLUSION:mTOR signaling pathway has a certain relationship with the crizotinib-induced apoptosis of lung cancer cell H 2228, which represents positive EML4-ALK fusion gene.