Objective To evaluate the relationship between the risk of breast cancer and abortions among nulliparous women. Methods Searched the data of Cochrane Library and PubMed before June 2014 to identify potentially studies which involved the relationship between the risk of breast cancer and abortions among nulliparous women. Data was extracted by two independent authors from each study. STATA software was used for statistical analysis. Calculated the pooled RR and 95% CI as the assessment of the link between abortions and breast cancer in fixed effects models. Results 13 studies were included. The study showed the RR and 95%CI of the relationship between the risk of breast cancer and abortions was 0. 98[0. 89,1. 08],P>0. 05 in nulliparous women, and the number of abortions was not associated with the risk of breast cancer. The RR and 95%CI of the relationship between the risk of breast cancer and induced abortions or spontaneous abor-tions were 0. 96[0. 88,1. 04],1. 01[0. 88,1. 14], respectively. Conclusion There is no correlation between breast cancer and abortions a-mong the nulliparous women, and the risk of breast cancer would not increas as the number of abortions increase.

OBJECTIVE:To investigate the effect of Xuebijing injection on coagulation function and prognosis in patients with sepsis. METHODS:50 patients with sepsis were randomly divided into control group and observation group according to the hospi-talization sequence,with 25 cases in each group. Control group received conventional treatment,and observation group was addi-tionally given Xuebijing injection(50 ml added into 5% Glucose solution or 0.9% Sodium chloride solution 250 ml intravenously, bid) on the basis of conventional treatment. Treatment course lasted for 7 d. The coagulation function,APACHE Ⅱscore after 7 days of treatment and 28 d mortality were compared between 2 groups. RESULTS:After 7 d treatment,the coagulation indexes were improved significantly in 2 groups compared with before treatment,and the APACHEⅡscores were decreased significantly in both groups;the observation group were significantly better than the control group,with statistical significance (P<0.05). After followed up for 28 d,the mortality rate of 2 groups were 16% and 28%,there was no statistical significance (P>0.05). CON-CLUSIONS:Xuebijing injection can inhibit blood clotting activation,correct the coagulation disorders,and improve the sepsis se-verity.

Objective To find out the exposure level and distributional characteristics of risk factors for stroke in health checkup population. Methods Target population was selected from two health management centers including Qianfoshan Hospital Affiliated to Shandong University and Shandong Provincial Hospital Affiliated to Shandong University in Shandong province. Data were investigated with a questionnaire which included general information, physical examination, laboratory examination and electrocardiography. Exposure rate of risk factors and its distributional characteristics were described. Results A total of 95 909 individuals were enrolled into data analysis, including 59 686 males (age:44.48± 14.43), 36 223 females (age: 44.80 ± 13.90). The major risk factors were lack of exercises (68.02%), overweight (60.54%)and dyslipidemia (58.27%). There were significant differences in age groups and sex. Conclusion Exposure rate of risk factor for stroke was high and there were substantial differences between sex and age in health checkup population. Screening and health management for stroke risks might be a necessary strategy for the preventive intervention.

Objective：To explore the effect of group psychological service on mental health of the children left behind in rural areas.Methods：Totally 222 children left behind in rural areas were selected randomly and divided into intervention group and control group.The intervention group accepted 8 times of group psychological service.The Eysenck Personality Questionnaire(EPQ),Center for Epidemiological Studies of Depression scale for Children(CES-DC),Rutter Children's Behavior questionnaire for completion by teacher,Piers-Harris Children `s Self-concept Scale(PHCSS)were used in both groups to evaluate the effect at baseline,the end of the 7th intervention,and 6 months after the end of the intervention.Results：After intervention,the intervention group got lower scores than control group in EPQ-N [(8.2±5.8)vs.(10.2±6.1),P<0.05]in the first retest,and in CES-DC [(15.9±7.3)vs.(18.8±7.7),P<0.05]in the second retest.The group gained higher scores in anxietyand happy and satisfaction factors of PHCSS [(6.6±3.4)vs.(5.6±2.7),(6.5±1.9)vs.(5.7±1.8);Ps<0.05]. Conclusion：Group psychological service are effective to children left behind in rural areas with depression emotion and had a role in children's personality remodeling.

Background and purpose:The risk of recurrence for colorectal cancer after curative surgery is up to 30%-40%. We aimed to evaluate the relationship between time to relapse (TTR) of colorectal cancer with clinical pathological parameters and overall survival after recurrence. Methods:We carried out the analysis of clinical data, pathological examination and follow up information of 375 colorectal cancer patients who admitted to Liaoning Cancer Hospital. Patients were categorized into relapse at<2, 2-5 and>5 years following their initial surgery. Results:TTR was associated with the clinical stage at diagnosis and liver or lung metastasis status. Short TTR (<2 years) was positively associated with survival. However, there was no significant difference in survival between patients who relapsed at 5 years or later compared with those who relapsed between 2 and 5 years. Conclusion:TTR within 2 years is an important predictor of shorter survival for colorectal cancer patients who experienced a relapse.

Objective: To investigate the combined preventive effect of folic acid (FA) and vitamin B12 (VB12) on the developmental toxicity of alcohol. Methods: To build animal model with the developmental toxicity by giving 5g/kg bw alcohol (25% ethanol) intragastrically (IG) to ICR mice during gestational day (GD) 6-15. In addition to alcohol, three groups were given FA 60 mg/kg bw, VB12 1 mg/kg bw, FA 60 mg/kg bw + VB12 1 mg/kg bw respectively by IG during GD1-GD16. An alcohol model group and a negative control group were set. All dams were killed at GD18. Results: Compared to the alcohol model group, the pregnant mice of FA + VB12 combined intervention group put on more weight during pregnancy; the live fetal rate; the fetal weight, body length and tail length were all increased; the abnormal ossification rate of sternum, occipital bone, and four limbs dropped (P

OBJECTIVETo explore the influence of miR-34a on Notch1 expression in breast cancer cells, and to explore the role of miR-34a in the sensitivity of breast cancer cells to Adriamycin (ADR).

METHODSThe expression of miR-34a in MCF-7 and MCF-7/ADR cells were detected by real-time fluorescence quantitative PCR. Cells were transfected with miR-34a mimics or inhibitor using Lipofectamine 2000. Expression of Notch1 in the two groups before and after transfection was detected by real-time fluorescence quantitative PCR and Western blot. MTT test and apoptosis assay were performed to observe the impact of miR-34a expression on the sensitivity of breast cancer cells to ADR. Statistical analysis of the results was conducted using SPSS 16.0 software. The experiment was repeated independently for at least three times, and had a good reproducibility. The data were shown as mean ± standard deviation. The analysis of variance between groups used one-way ANOVA test. Correlation between groups was analyzed using Spearman rank test. P < 0.05 was considered statistically significant.

RESULTSCompared with the control MCF-7 cells, the relative expression level of miR-34a in MCF-7/ADR cells was significantly decreased to 0.02 (P < 0.05). In the MCF-7 ADR-resistant cells, Notch1 mRNA expression was increased compared with that in the MCF-7 ADR-sensitive cells (2.10 ± 0.20-fold, P < 0.05). The expression levels of Notch1 mRNA and protein in MCF-7/ADR cells transfected with miR-34a mimics were significantly up-regulated. On the contrary, the expressions of Notch1 mRNA and protein in MCF-7 cells transfected with miR-34a inhibitor were down-regulated. The IC50 value of ADR in the control MCF-7/ADR cells and cells transfected with miR-34a mimics was (116.33 ± 16.80) and (39.28 ± 4.12) µmol/L, respectively (P < 0.05). The IC50 value of ADR in control MCF-7 cells and cells transfected with miR-34a inhibitor was (0.29 ± 0.21) and (0.51 ± 0.03) µmol/L, respectively (P < 0.05). Further, overexpression of miR-34a significantly enhanced apoptosis in the ADR-treated MCF-7/ADR cells, and miR-34a inhibitor reduced apoptosis in the ADR-treated MCF-7 cells.

CONCLUSIONSmiR-34a negatively regulates the expression of Notch1 at both mRNA and protein levels. Overexpression of miR-34a may sensitize MCF-7/ADR cells to adriamycin.

Antibiotics, Antineoplastic ; pharmacology ; Apoptosis ; Breast Neoplasms ; Down-Regulation ; Doxorubicin ; pharmacology ; Drug Resistance, Neoplasm ; Gene Expression Regulation, Neoplastic ; physiology ; Humans ; MCF-7 Cells ; MicroRNAs ; metabolism ; Receptor, Notch1 ; metabolism ; Reproducibility of Results

Objective: To explore the sonographic features of primary testicular lymphoma(PLT). Methods: The sonographic features of 16 PLT patients confirmed by surgery and pathology were retrospectively analyzed. Results: Sixteen PLT patients were typed into 3 ultrasonic patterns: ①The diffuse homogeneous echo type: 2 cases, the ultrasonic features were homogeneous sieve-like hypoechoic echo, the blood flow signal was rich and radially distributed, with interstisial fibrosis inapparently under-microscope. ②The diffuse uneven homogeneous echo type: 9 cases, the ultrasonic features lobulated or map-like heterogeneous hypoechoic features, the blood flow signal was rich in linear distribution, and interstisial fibrosis proliferated to form fibrous septa under-microscope. ③The focal nodular pattern echo type: 5 cases, the ultrasonic features were homogeneous hypoechoic nodules, the blood flow signal was few, interstisial fibrosis hyperplasia surrounding the tumor under-microscope. Conclusions Ultrasonic appearances of primary testicular lymphoma are closely related to its pathologic characteristics, the recognization of their relations contributes to improve the diagnostic value of ultrasound.

In this paper is presented an analysis of the mechanical effect of horizontal rotating bioreactor on cell culture. Getting the microgravity of the bioreactor and the shear stress on canine mesenchymal stem cells (cMSCs) with theoretic calculating model and differential equations, we have validated the density,growth rate and modality of cultured cell by scanning electron microscopy. The horizontal rotating bioreactor which we developed could create the mechanic environment of microgravity (K<8.38 X 10(-2))and low shear stress(r<1.62 dyn/cm2) in theory. The results of scanning electron microscopy indicated that the cells' growth-speed, quantity and modality in bioreactor were better than those of cells cultured in static 24-well plate. The mechanical environment of the rotating bioreactor is propitious for keeping better modality and more rapid proliferation of cMSCs. The rotating bioreactor is a novel approach and technique it is superior to static culture.
Animals ; Bioreactors ; Bone Marrow Cells ; cytology ; Cell Culture Techniques ; instrumentation ; methods ; Cell Proliferation ; Cells, Cultured ; Dogs ; Mechanotransduction, Cellular ; physiology ; Mesenchymal Stromal Cells ; cytology ; Rotation ; Tissue Engineering ; methods

Objective To have SD rats inhaled with different drugs,and observe their lung pathological change of lungs through light microscopy,in order to evaluate the safety of different drugs inhaled by natural rats. Methods A total of 40 rats were randomly divided into 8 groups,and every group had 5 rats,including blank control groups,9 g/L saline group,Salbutamol group,Dingchuantang group,Shuanghuanglian group,Centamicin group,Danshen group,Silicon dioxide group,twice a day,last 56 days totally. Then,blood and bronchoalveolar lavage fluid were collected and analyzed for cell count,percent of each type of cell,to measure the severity of the inflammation. Additionally,histopathology re-vealed the lungˊs pathological change and the number of dust cell;while immunohistochemistry revealed CD163 respon-ding. Results (1)White blood cell count:blank control group(3. 96 ± 0. 36)×109/L,9 g/L saline group(4. 66 ± 0. 58)×109/L,Salbutamol group(4. 06 ± 0. 86)×109/L,Dingchuantang group(8. 98 ± 1. 08)×109/L,Shuanghuang-lian group(7. 10 ± 0. 88)×109/L,Centamicin group(6. 14 ± 0. 89)×109/L,Danshen group(9. 84 ± 2. 33)×109/L, Silicon dioxide group(8. 99 ± 2. 48)×109/L,and comparative analysis of the 8 groups had significant difference(F＝14. 530,P<0. 05);the differences among blank control group,9 g/L saline group and Salbutamol group were not sig- nificant(all P>0. 05). White cell count in BALF:blank control group(2. 16 ± 1. 04)×109/L,9 g/L saline group (3. 94 ± 0. 67)×109/L,Salbutamol group(4. 36 ± 1. 15)×109/L,Dingchuantang group(14. 58 ± 2. 93)×109/L, Shuanghuanglian group(19. 68 ± 6. 29)×109/L,Gentamicin group(11. 74 ± 1. 03)×109/L,Danshen group(44. 75 ± 10. 8)×109/L,Silicon dioxide group(53. 54 ± 14. 25)×109/L,and comparative analysis of the 8 groups had signifi-cant difference(F＝40. 616,P<0. 05);the differences among blank control group,9 g/L saline group and Salbutamol group were not significant(all P>0. 05). Lymphocyte count in BALF:blank control group(18. 70 ± 9. 00)×108/L, 9 g/L saline group( 36. 01 ± 5. 99 )×108/L,Salbutamol group( 38. 95 ± 11. 69 )×108/L,Dingchuantang group (132. 70 ± 26. 94)×108/L,Shuanghuanglian group(173. 56 ± 57. 6)×108/L,Gentamicin group(106. 60 ± 16. 76)× 108/L,Danshen group(340. 63 ± 70. 97)×108/L,Silicon dioxide group(495. 63 ± 131. 95)×108/L,and comparative analysis of the 8 groups had significant difference(F＝41. 980,P<0. 05);the differences among blank control group, 9 g/L saline group and Salbutamol group were not significant(all P>0. 05).(2)Number of lung dust cell count in 10 sight of high light microscopy:blank control group 12/10 HP,9 g/L saline group 26/10 HP,Salbutamol group 17/10 HP,Dingchuantang group 262/10 HP,Shuanghuanglian group 133/10 HP,Gentamicin group 109/10 HP,Danshen group 96/10 HP,Silicon dioxide group 315/10 HP,and comparative analysis of the 8 groups had significant difference (F＝69. 915,P<0. 05);the differences among blank control group,9 g/L saline group and Salbutamol group were not significant(all P>0. 05).(3)Hematoxylin-eosin staining of lung:blank control group,9 g/L saline group and Sal-butamol group had no pathological change in the lung,but Salbutamol group,Dingchuantang group,Shuanghuanglian group,Gentamicin group,Danshen group and Silicon dioxide group had pathological changes in different degrees.(4) Immunohistochemistry of CD163 responding:blank control group,9 g/L saline group and Salbutamol group had negative expression,Salbutamol group,Dingchuantang group,Shuanghuanglian group,Gentamicin group,Danshen group and Sili-con dioxide group had positive expression in different degrees. Conclusions 9 g/L saline,salbutamol for atomized inhalation does not cause lung tissue damage;Long-term use of non-atomized drugs in atomization can cause lung tissue injury in SD rats,and the severity varies with specific drugs.