Background and purpose:We have already reported viral macrophage inflammatory protein-Ⅱcan induce surface chemokine receptor CXCR4 internalizated.Based on the diverse biological functions of SDF-1?/ CXCR4,this study was to investigate the effect of SDF-1?on invasion and metastasis of human breast carcinoma MCF-7 cells.Methods:MCF-7 cell's ability of invasion,metastasis and anoikis were used as end points.The invasive ability was measured by the number of cells that were able to penetrate polycarbonates coated with matrigel.The metastastatic ability was analyzed by Transwell chamber.The anoikis ability was detected by FCM.Results:SDF- 1?+MCF-7 cells formed long and abundant pseudopodia,and only few filopodia were detectable in MCF-7 cells.It was shown that adhesive and metastasis capability of MCF-7 cells was enhanced with SDF-1?cocultured(P

Objective To investigate perinatal outcomes of twin pregnancy.Methods Perinatal outcomes of 658 pregnancies with twins hospitalized and born at Beijing Obstetrics and Gynecology Hospital during 2002 to 2005 were retrospective analyzed to compare the influence of type of twin,delivery mode, gestational week,birth time interval between twins,as well as specific complications of twin pregnancies on their outcomes.Results Pefinatal fatality of monzygous twins was 53.69 per thousand(16/298),higher than that of dizygous twins(27.11 per thousand,9/332),with U=2.35,P0.05.Perinatal fatality was higher in twins with different development (birth weight).Perinatal fatality in dizygous twins(12.5 percent,2/16)was lower than that in monozygous ones(14.3 percent,6/42),and that in twins with different development(birth weight)(0.6 percent, 2/316)was lower than that with same development(1.2 percent,3/256),with ?~2=16.944,P

Objective　Recently,it was reported the analy sis of bone free radical by using electron spin resonance (ESR),so this article aimed to determine the changes of bone free radical in fluoresis rats.Methods　To analyze the free radical level of bone in fluoresis rats fed with different dose of calcium by ESR method.Results　The free radical of bone in the group of low ca lcium level and the group low calcium+fluorides was higher than that in the cont rol group (P<0.01),but that in normal animal feeds (calcium-rich)+fluoride group was lower than that in the control group.Conclusions　Low doses of fluoride did not resulted in the increase of free radical in calcium-rich condition at short time,but at low calcium condition,fluoride could increase the level of free radical,these suggested that simple overdose of fluoride did not change the level of free radical of bone.

Objective To evaluate the effect of endemic disease prevention in Shaanxi province caused by earthquake and supply a scientific basis for making decision regarding restoration and reconstruction after the earthquake.Methods Forty different drinking water samples were collected respectively from Mianxian county and Chencang district the earthquakes'most severely hit areas in Shaanxi province with drinking-water-borne fluorosis.The contents of fluorine and arsenic in the water was detected by Fluoride ion-selective electrode and hydride generation atomic fluorescence spectrometry,respectively.Two hundreds iodized salt and urine samples were collected from affected household women aged 18-45 in severely hit Ningqiang and Lveyang countie with iodine deficiency disorders.The contents of iodine in the salt was detected by semi-quantitative and of urinary iodine of household women was determined by AsⅢ-Ce4+ catalytic spectrophotometry.Two hundred children aged 7-12 were detected by clinical and X-ray examination from Ningqiang and Lveyang counties of Kashin-Beck disease prevailing areas.Hair and food samples from 20 children were collected.The contents of selenium were determined by 2,3-Diamino naphthalene fluorescence spectrophotometry and of T-2 toxin in the food was detected by ELISA.Results No incidents of serious hydrologieM or geological damage were found.Fluoride content in one of eighty water samples was beyond 1.5 mg/L,accounting for 1.25%;five samples were between 1.0 mg/L and 1.5 mg/L,accounting for 6.25%:the arsenic content of all samples were below 0.01 mg/L;all the salt samples from the home of household aged 18-45 were iodine salt,the median of urine iodine of household wonlen Was 303.03μg/L (21.40-1133.54 μg/L) and 325.21 μg/L(27.61 - 1191.46 μg,/L) in Ningqiang and Lveyang counties, respectively.No clinical and X-ray patients were found in the children aged 7 - 12, the average content of selenium in hair was (0.2638 ± 0.0875)mg/kg; the content of T-2 toxin in the forty food samples was below 100 μg/kg. Conclusions The prevention of the endemic disease in the four counties has been moderately affected by the earthquake, but the situation of endemic disease is stable and there is no evidence of the endemic disease.

Objective To explore the predicative value of transvaginal ultrasonography and 48 hours blood HCG ratio for ectopic pregnancy(EP).Methods A total of 90 patients in our hospital from June 2014 to May 2016 were selected as the object according to the pregnancy result and postoperative pathology (40 cases in EP group and 50 cases in control group).The endometrial thickness was measured through transvaginal ultrasonography while blood HCG was detected by chemiluminescence technique and 48 hours blood HCG ratio was calculated.To evaluate the individual and combined predicative value of endometrial thickness and 48 hours blood HCG ratio for EP,receiver operating characteristic curves(ROC) were generated and logistic regression analysis was conducted.Results The endometriam thickness and 48 h blood HCG ratio of EP group were (11.75 ± 3.42) mm and (1.06 ± 0.38) ％,respectively,which were lower than (15.52 ± 3.98) mm and (1.46 ± 0.20)％ of control group,the differences were statistically significant (P =0.000).The AUCs and their corresponding 95％ confidential intervals(CI) were 0.77[95％ CI(0.67,0.87)] and 0.82[95％ CI(0.73,0.91)],respectively.Combined ROC analysis based on the 2 indexes revealed an elevated AUC of 0.89 [95％ CI(0.83,0.95)],the differences were statistically significant(P =0.04).Conclusion The endometrial thickness and 48 hours blood HCG ratio can be acted as useful predicative biomarkers for detection of EP.A combination of the two indexes could be a useful predicative biomarker for future clinical trials with EP and may act as a suitable add-on biomarker to the panel of methods already existing for EP.

Objective To investigate the value of high frequency ultrasound and CT in the diagnosis of laryngeal carcinoma. Methods Sixty-nine cases of laryngeal carcinoma were typed and staged by high frequency ultrasound and CT, and compared with the results of laryngoscopy and postsurgical pathology. Results The typing accuracy was ~94.2 % for ultrasonography and ~91.3 % for CT, higher than that of laryngoscopy(~73.9 %).T staging accuracy of ultrasonography was T_1 ~85.9 %,T_2 ~88.5 %,T_3 ~94.1 % and T_4 ~88.9 %, higher than that of CT (~68.8 %) and laryngoscopy (~75.0 %) in T_3 stage and superior to laryngoscopy (~66.7 %) in T_4 stage. Lymph node metastases were found in 37 cases (~53.6 %) by ultrasonography, higher than those by CT scanning (~27.5 %). Color Doppler blood flow laryngeal carcinoma was shown in 65 cases(~94.2 %),most were low resistance spectrum pattern. Conclusions High frequency ultrasonography is superior to CT and laryngoscopy in the staging of laryngeal carcinoma and is of great value in choosing the therapeutical protocol.

Objective To understand the current circumstance of the surgical resident training bases in Beijing Methods The reassessment data of the 11 surgical resident training bases in Beijing were collected and analyzed. Results 73%(8/11)surgical resident training bases have passed the assessment; and 27%(3/11)have not completely reached the requirements The most prominent problems found in the reassessment were that the numbers of clinic and emergency patients in some departments;the qualification and teaching level of the instructors;the administration in the training process;the test after finishing the rotation and the training results, Conclusion Surical resident training bases criterion,instructor for resident training and administration in the training process are the most important factors which influence the surgical resident training results

Chlorzoxazone ; blood ; Chromatography, High Pressure Liquid ; methods ; Cytochrome P-450 CYP2E1 ; blood ; Humans

BACKGROUND: Signal transducer and activator of transcription 3 (STAT3) protein is widely expressed in cells and tissues of different type and. It is the important component of signal transduction and transcription chain that participates in the regulation of various physiological functions of cells like proliferation and differentiation. However, there is no literature reported regarding if there is STAT3 expression and whether it participates in embryo liver development both at home and abroad.OBJECTIVE: To explore the effects and mechanism of STAT3 signal transduction route on development of embryo liver by. Studying the expression of STAT3 protein during embryo liver development in mice.DESIGN: Randomized controlled study based on STAT3 protein.SETTING: Department of histology and embryology in a military medical university of Chinese PLA.MATERIALS: The study was completed in the Department of Histology and Embryology, Third Military Medical University of Chinese PLA during January to June 2004. Kunming mice were provided by Animal Centre of Third Military Medical University of Chinese PLA. Ten male mice and 20 female mice with body mass during 25 to 30 grams were randomly chosen.METHODS: Serial frozen sections of mouse embryo was performed in the 13.5 days ( n = 8), 14.5 days ( n = 9) and 15.5 days ( n = 7) after mating respectively. One of the every 2 slices was used as negative control by replacing first antibody of STAT3 with 0. 01 mol/L PBS. Immunochemical technique and immunofluorescence method were used to display the expression of STAT3 protein in embryo liver development in mice.MAIN OUTCOME MEASURES: Expression of STAT3 protein in serial frozen sections of mouse embryo.RESULTS: There was strong expression of STAT3 protein in liver cells in E13.5 days mouse embryo while the expression was decreased in E14.5 days and E15.5 days mouse embryos.CONCLUSION: STAT3 protein has participated in the development of embryo liver. The expression of STAT3 in liver development can be used to explain the mechanism of liver regeneration and provide experimental data for organ repair.

Acupuncture Points ; Adolescent ; Child ; Child, Preschool ; Electroacupuncture ; Female ; Humans ; Male ; Rhinitis, Allergic ; therapy ; Treatment Outcome