Phytoestrogen is a kind of plant element which is similar to animal estrogen. Phytoestrogens can prevent progreator system cancer, cardiovascular disease and osteoporosis. Recently more and more researches are reported on the protection of phytoestrogens on central nerve system.

[Objective] To investigate the role of exenatide on angiogenesis in endometrial cancer Ishikawa xenografts in nude mice.[Method] We used the subcutaneous human endometrial cancer cell Ishikawa xenografts in nude mice model,and divided them into control group and exenatide-treated group.The harvested tumors were preserved for immunohistochemistry staining and western blot analysis.[Results] The micro-vessel density (CD31 positive) in exenatide-treated group was (13.2 ± 1.4)/400 power field,less than that in control group [(25.9 ± 5.8)/400 power field] (P ＜ 0.01).The expression level of VEGF was significantly lower in exenatide-treated group than that in control group (P ＜ 0.05).The mean density of tumor associated macrophages (F4/80 positive) is (31.4 ± 3.4)％ in exenatide-treated group and (72.1 ± 4.2)％ in control group with significant difference (P ＜ 0.01).[Conclusion] Exenatide weaks tumor angiogenesis within endometrial cancer Ishikawa xenografts in nude mice.

AIM To investigate the effects of ondansetron, a selective 5 Hydroxytryptamine3 (5 HT 3) receptor antagonist, on morphine physical dependence. METHODS The morphine dependent models in mice and in isolated Guinea pig ileum were used. RESULTS Pretreatment of ondansetron for 12 days significantly reduced morphine withdrawal symptoms in mice ,such as body weight loss(Groups 2～100 ?g?kg -1 ?d -1 ) or reduced both body weight loss and jumping times (Group 100 ?g?kg -1 ?d -1 ). In addition, concomitant treatment with ondansetron(1～20 ?mol?L -1 ) dose dependently suppressed the contraction induced by naloxone in Guinea pig ileum. CONCLUSION The chronic pretreatment of ondansetron can prevent morphine physical dependence to some extent.

Objective To investigate the effects of ultrashortwave (USW) diathermy and electrical stimulation (ES) used in combination with nerve growth factor (NGF) in the treatment of experimental sciatic nerve injury.Methods Sixty adult Wistar rats were randomly divided into a normal control group, a model group, an NGF group,a physiotherapy group and a combined treatment group. A model of sciatic nerve injury was established in the latter four groups. Beginning on the 2nd day after the operation, no treatment was given in the model group, NGF was injected in the NGF group, diathermy and ES were administrated to rats in the physiotherapy group, and the combined treatment group was treated with USW diathermy, EW and NGF. Function, electrophysiology and morphology were evaluated at the 2nd, 7th, 14th and 30th days after the operation Results The average sciatic nerve function index (SFI), nerve conduction velocity (NCV) and nerve regeneration in the NGF, physiotherapy and combined treatment groups were significantly better than in the model group, with those in the combined treatment group improved to the greatest extent. At the 30th day there was no significant difference between the combined treatment group and the normal control group in terms of SFI, NCV, axon regeneration or myelin sheath thickness. The number of myelinated nerve fibers and the average axon diameter in the combined treatment group and normal control group were significantly higher than those in the model, NGF or physiotherapy group. Conclusions With NGF injection, additional application of USW diathermy and ES may significantly enhance the regeneration of the sciatic nerve and aid functional recovery after injury.

Objective To investigate the effects of down-regulation of polo-like kinase-1 (PLK1) gene by RNA interference (RNAi) on the invasion of a human malignant melanoma cell line A375 and their possible mechanisms.Methods Cultured A375 cells were classified into several groups:blank control group receiving no treatment,liposome group transfected with lipofectamine only,and three siRNA groups transfected with three concentrations of a small interference RNA (siRNA) targeting PLK1 respectively.After additional culture,real time quantitative PCR and Western blot analysis were performed to quantify the expressions of PLK1 mRNA and protein in A375 cells respectively,Transwell invasion assay to evaluate the invasive capacity of A375 cells,agarose gel electrophoresis and terminal deoxynucleotidyl-transferase-mediated dUTP-biotin nick end labelling (TUNEL) to detect anoikis in A375 cells.The colony-forming capacity was also evaluated for A375 cells.Statistical analysis was carried out by one-factor analysis of variance.Results There was a significant decrease in PLK1 mRNA and protein expressions as well as in colony-forming units in the siRNA groups compared with the blank control group (all P ＜ 0.05).The invasive capacity of A375 cells was significantly inhibited in the siRNA groups with the number of migrating cells in Transwell assay being 39 ± 5,19 ± 5 and 9 ± 3 in A375 cells transfected with 3.125,6.250 and 12.500 nmol/L siRNAs respectively,compared to 56 ± 5 in the blank control group (all P ＜ 0.05).A characteristic DNA ladder was observed on agarose gel electrophoresis in the siRNA (6.250 nmol/L) group.Compared with the blank control group and liposome group,the three siRNA groups showed increased apoptotic index (3.86％ ± 0.35％ (3.125 nmol/L siRNA),7.35％ ± 0.36％ (6.250 nmol/L siRNA) and 17.56％ ± 0.38％ (12.500 nmol/L siRNA) vs.1.15％ ± 0.25％ (blank control group) and 1.18％ ± 0.22％ (liposome group),all P ＜ 0.05).Conclusions PLK1 siRNA can inhibit the invasion of malignant melanoma cells,likely by inducing anoikis in these cells.

The JC virus is a widely infected human polyomavirus. Recent foreign researches showed that the JC virus infection is correlated with tumors of nervous system and digestive system, while, and study on the relationship between JC virus infection and gynecological tumor is seldom reported. In this study, we first establish the nucleic acid detection methods and procedures for JC virus and its highly homologous BK virus. The JC and BK viruses infection was evaluated by detect the viral DNA in samples including biopsy tissues, serum as well as urine of myoma of uterus (98 cases), cervical cancer (84 cases), endometrial cancer (40 cases) and ovarian tumor (72 cases) patients. The BK viral DNA positive rate was significantly higher in urine samples than that of blood and biopsy samples, and there is no significant difference of the BK viral DNA positive rate among all patient groups. The JC viral DNA positive rate is almost 0 in serum samples and biopsy. tissues, however, viral DNA positive rate is more than 50% in urine samples. In fibroids group, the JC viral DNA positive rate is up to 65. 3% which is significantly higher than that in other patients groups and healthy control. Further gynecological tumor associated viruses detection showed that only human papilloma virus infection is associated with cervical cancer, the herpes simplex virus, EB virus and cytomegalovirus infection is extremely low in our patient groups. No synergistic effect on gynecological tumor caused by viruses co-infection was observed. Our study showed that JC virus infection is highly related to the pathogenesis of uterine fibroids.
Adult ; Female ; Genital Neoplasms, Female ; virology ; Humans ; JC Virus ; classification ; genetics ; isolation & purification ; Middle Aged ; Polyomavirus Infections ; virology ; Tumor Virus Infections ; virology ; Young Adult

Objective To study the construction of the lentiviral-mediated RNA interference(RNAi) vector targering rat suppressors of cytokine signaling 3(SOCS3) gene.Methods Three target sequences were selected by on-line designer software on Ambion according to rat SOCS3 mRNA sequence(NM053565),the complementary DNA contained both sense and antisense oligonucleotides were designed and synthesized.After annealing,these double strands DNA were cloned to pRNA-Lenti-green fluorescent protein(GFP),which contained U6 promoter and GFP.The resulting Lentiviral vector containing SOCS3 shRNA was named pRNA-Lenti-SOCS3-GFP.After the rat glioma cells(C6)were transduced with the constructed 1entiviral vectors,real-time polymerase chain reaction was used to evaluate the level of SOCS3 expression(including siRNA1 group,siRNA2 group,siRNA3 group,vacuity group and siRNA-Negative group).The pRNA-Lenti-SOCS3-GFP and Lentivector Pakaging plasmid mix were cotransfected into 293T to package Lentivirus particles.Culture supematant was harvested,then the virus titer was determined by serial dilution assay.Results The SOCS3 mRNA sequence was successfully cloned to pRNA-Lenti-GFP,which was proved by PCR and DNA sequence.Compared with control group,the SOCS3 mRNA expressions were obviously suppressed in all 3 experimental groups,especially the expression rate in siRNA1 group was reduced by 80%.The Lentiviral particle titer was determined by serial dilution assay with 1.0?1010 TU?L-1.Conclusion The lentiviral-mediated RNAi vector of rat SOCS3 gene has been constructed successfully,this may provide a potential tool for studying and treating SOCS3-related diseases.

97 cases of jaw bone fractures were treated with rigid internal fixation.16 cases had malocclusion postoperation.The etiology was analyzed and the prevention methods were proposed.Intermaxillary elastic traction or fixation and craniomaxillofacial fixation or craniomentum elastic traction were performed to treat the malocclusion.By this way,14 cases were cured.1 case was operated again to resume the normal occlusion,1 case received occlusal adjustment.Incomplete reduction,incorrect operative performance,deficiency of postoperative intermaxillary fixation and incorrect intermaxillary fixation were the main causes to malocclusion.So anatomic in time reduction,correct operative performance,intermaxillary fixation,application of craniomaxillofacial fixation or craniomentum elastic traction instead of intermaxillary fixation for some special cases are effective methods to correct postoperative malocclusion.

Objective:To observe the change of CD4 + T cells of SARS patients in early stage of disease and determine its clinical significance on the progress of disease and therapy selection.Methods:Detection the absolute counts of T cell subset from the peripheral blood samples of 52 SARS patients in initial 10 days' duration by Flow cytometry.Serial frontal chest radiographs had done and the progression of disease was observed during the treatment of all patients.Results:The 34 cases among the 52 patients were in normal range of CD4 + cell absolute count.At the same time,their pulmonary lesions were in limited degree and the states of an illness were stabilization and the pulmonary lesions were absorbed quickly.Therefore they reuired the treatment without corticosteroids.The other 18 patients were with low CD4 + cell absolute count, of which 13 cases showed progressive deterioation of radiographic change and were treated with corticosteroids additional.The other 5 cases with the mild low of absolute count of CD4 + cells were also static during the period of observation,and no treatment with coticosteroids.There was statistically significant relation between two groups(P=0 000).The results of Pearson correlate analysis between absolute count of CD4 + cells and pulmonary lesions were r=-0 737;P=0 000;The result between absolute count of CD4 + cells and corticosteroids treatment were r=-0 573;P=0 000.Conclusion:Peripheral blood CD4 + cell absolute counts of SARS patients on early stage of onset were negatively related to the degree of pulmonary lesions.The patients with remarkable decrease of CD4 + cell were in need of treatment with corticosteroids.

Objective To investigate the curative effect of Candesartan on chronic systolic heart failure in Tibetan pla?teau. Methods A total of 526 patients with chronic systolic heart failure were divided into two groups randomly (Treatment group N=252;Control group N=274). Regular medicines, such as cardiac, diuretic and vasodilator drugs , are given to pa?tients in both groups according to their primary underlined diseases. Additionally, enalapril is added in control group, while candesartan is added in treatment group. Improvement of cardiac function, LVEF, LVEDD and blood pressure were compared between these two groups after 8 weeks. Results There was no significant difference in effective rate (i.e., 45.2%in treat?ment group and 44.9% in control group, respectively), efficiency rate (i.e. 54.8% in treatment group and 55.1% in control group, respectively) and inefficiency rate (i.e. 2.0%in treatment group and 2.2%in control group, respectively) between treat?ment and control groups . After treatment, LVEF in the two groups are all improved, while LVEDD and blood pressure both de?creased with statistical significance. However, the difference between the two groups is not significant. Conclusion No sta?tistical difference was found in curative effect on chronic systolic heart failure in Tibetan Plateau between two groups.