miR-216b-5p Promotes the Migration and Invasion of LN-229 Glioma Cells by Targeting BTN3A2 / 中国生物化学与分子生物学报

Accumulating evidence indicated that microRNAs (miRNA) play an important role in tumor invasion and metastasis by regulating their target genes.However, whether the miRNA-216b-5p(miR-216b-5p ) and their target genes butyrophilin subfamily 3 member A2(BTN3A2) promote glioma invasion and metastasis is unclear.This study aims to study whether miR-216b-5p promoted migration and invasion in glioma cells by negatively regulating BTN3A2.The differential expression analysis of GSE15824 and GSE4290 was analyzed by GEO2R.We found that only BTN3A2 is up-regulated in both GSE15824 and GSE4290 (P<0.05).The gene set enrichment analysis (GSEA) analysis indicated BTN3A2 was related to many cancer-related pathways (P<0.05).The results of survival curves showed that the overall survival of patients with high expression of BTN3A2 decreased significantly (P <0.001).The expression of BTN3A2 was increased with the increase of WHO grade (P<0.05), while the expression of BTN3A2 was increased in 1p/19q uncombined deletion and IDH mutant patients (P<0.001).Western blotting results showed that BTN3A2 was up-regulated in seven glioma tissues and glioma cell lines U87, U251 and LN-229 and downregulated in the miR-216b-5p mimics group; Transwell results showed that transfection with BTN3A2 silencing plasmids(si-BTN3A2) or miR-216b-5p mimics plasmids could inhibit the ability of migration and invasion in LN-229 cells in vitro (P<0.05).The online websites predicted miR-216b-5p as a potential target gene of BTN3A2.The survival curve results show that compared with patients with low expression of miR-216b-5p , the survival rate of patients with high expression was significantly increased (P=0.025).The relative expression of miR-216b-5p was decreased in U87, U251 and LN229 cells was detected by real time quantitative PCR (P<0.05).The results of dual luciferase assay showed that BTN3A2 could bind to miR-216b-5p (P<0.05).Transwell experiment results showed that overexpression of miR-216b-5p can inhibit the migration and invasion ability of LN229 cells (P<0.05).In summary, miR-216b-5p promotes the migration and invasion by targeting BTN3A2 of LN-229 glioma cells.

MiR-654-5p Inhibited Invasion and Metastasis of Breast Cancer Cells by HCFC1 / 中国生物化学与分子生物学报

Studies have confirmed that microRNA (miRNAs) is involved in the development and progression of tumors by targeting multiple genes. However, the molecular mechanism of miR-654-5p in in- hibiting the invasion and metastasis of breast cancer cells through the targeted regulation of host cell factor 1 (HCFCl) is still unclear. The analysis of bioinformatics datasets found that miR-654-5p was downregu-lated in breast cancer tissues and was associated with poor prognosis (P = 0. 013). Quantitative real-time PCR (Quantitative real-time PCR, qRT-PCR) showed that the expression of miR-654-5p in MDA-MB-231 cells was decreased (P<0. 05), and the expression of miR-654-5p was significantly increased after transfection of the overexpressed plasmid (P<0. 05) as compared with the control group. The 5-Ethynyl-2'-deoxyuridine (EdU) proliferation experiment and Transwell assay showed that overexpression of miR-654-5p inhibited the proliferation, migration and invasion of MDA-MB-231 cells (P<0. 05). Hub gene HCFCl of miR-654-5p was screened and constructed by Cytoscape software, and it was found that miR-654-5p was negatively correlated with the expression of HCFCl. The expression of HCFCl was increased in breast cancer tissues and closely correlated with lymph node metastasis, and patients with high expression of HCFCl had poor prognosis (P = 0. 0039). Dual-luciferase assay confirmed that miR-654-5p could bind to the 3'-UTR of HCFClmKNA (P<0. 05). Western blot results showed that compared with human normal breast epithelial cells MCF-10A, the expression of HCFCl was increased in MDA-MB-231 cells (P<0. 05), and the expression of HCFCl was significantly down-regulated after overexpression of miR-654-5p (P<0. 05). Transwell experiment results showed that the migration and invasion ability of MDA-MB-231 cells after overexpression of miR-654-5p was significantly decreased compared with the control group. Co-transfection of HCFCl can partially reverse the inhibitory effect of miR-654-5p on the migration and invasion ability of breast cancer cells (P<0. 05). In conclusion, miR-654-5p can inhibit the proliferation, invasion and metastasis of breast cancer cells by regulating the expression of HCFCl.

Bioinformatics analysis and experimental validation of microRNA-140-3p targeting cell division cycle associated 8 inhibiting invasion and metastasis of lung adenocarcinoma cells / 解剖学报

Objective To investigate the effect of microRNA (miR) - 140-3p targeting cell division cycle associated 8(CDCA8) on invasion and metastasis of lung adenocarcinoma cells. Methods The differentially expressed miRNAs were analyzed by GE02R in GEO database. The target genes of miR-140-3p were searched by TargetScan human7. 2 and miRWalk databases. The hub gene was screened by Cytoscape 3. 7. 2 software. GEPIA database was used to query the expression levels of target gene in lung adenocarcinoma tissues and normal lung tissues, the expression levels in different stages of lung adenocarcinoma, and the relationship between the expression levels of target gene and the overall survival rate of lung adenocarcinoma patients. The survival analysis of miR-140-3p in lung adenocarcinoma and the correlation between miR-140-3p and CDCA8 expression levels were searched in starBase database. Real-time PCR was used to detect the expression levels of miR-140-3p in normal lung epithelial cells BEAS-2B and lung adenocarcinoma cells A549, as well as the efficiency of infection. Expression levels of CDCA8 mRNA and protein were detected by Real-time PCR and Western blotting experiments after overexpression of miR-140-3p. Dual-luciferase reporter assay verified whether miR-140- 3p directly binds to CDCA8. Transwell invasion assay detected the effect of overexpression of miR-140-3p and CDCA8 on the invasiveness of lung adenocarcinoma cells. Results Analysis result from GEO and other databases showed that the expression level of miR-140-3p in normal lung tissues was significantly higher than that in lung adenocarcinoma, and its predicted target gene CDCA8 expression level in lung adenocarcinoma was significantly higher than that in normal lung tissues, and CDCA8 was negatively correlated with the expression level of miR-140-3p in lung adenocarcinoma. The experimental result showed that the expression of miR-140-3p in A549 cells was significantly lower than that in BEAS-2B cells (P<0.05). The expression level of miR-140-3p increased significantly after lentiviral infection (P<0.05). CDCA8 mRNA and protein expression levels were significantly down-regulated after overexpression of miR-140-3p (P<0.05). Dual-luciferase reporter assay result showed that miR-140-3p could directly bind to CDCA8 (P<0.05). Compared with the control group, overexpression of miR- 140-3p inhibited the invasion and metastasis of lung adenocarcinoma A549, while CDCA8 reversed the inhibition of miR-140-3p on the invasion and metastasis of lung adenocarcinoma A549 (P<0.05). Conclusion MiR-140-3p targeting CDCA8 inhibits the invasion and metastasis of lung adenocarcinoma cells.

Investigation of myopia and influencing factors in primary and secondary school students in Shashi district, Jingzhou city, Hubei Province / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM: To investigate the prevalence of myopia and its impacting factors among adolescents in schools of Shashi district, Jingzhou city in 2017, and to provide a scientific basis for prevention and control of myopia.<p>METHODS: Totally 10 353 primary and secondary school students aged 7 to 18 were selected through the method of cluster stratified sampling in the central area and rural-urban area of Shashi. The number of students with myopia was 5 456, and the prevalence rate was 52.70%. A total of 10 353 on-site questionnaires were collected. Logistic regression analysis was conducted for related factors. <p>RESULTS: The subjects of this survey were 8 primary and secondary schools in the central area and 6 primary and secondary schools in suburban area. The prevalence of myopia was 60.34% in the central area and 11.43% in rural-urban area(<i>P</i><0.01). Outdoor activities and correct reading and writing gesture are preventive factors for myopia. Three risk factors for myopia include age, time spent on electronic devices and continuous working hours after class. <p>CONCLUSION: The myopia rate of primary and secondary school students in Shashi district of Jingzhou city is at a high level, especially in the downtown area. To prevent and reduce the occurrence of adolescent myopia, schools and families should make joint efforts to increase time of outdoor activities, and improve the eye environment for adolescent.

Application situation, existing problems, and improvement ideas of sharps containers / 中国感染控制杂志

Sharp injury is a common occupational injury occurs in hospital, it is also an important way for health care workers to be infected with blood-borne pathogens, standardized use of sharps containers can effectively prevent the occurrence of sharp injury.Sharps containers are widely used in China, but the specifications are limited and the products are single, there is still room for improving safety performance.In view of the problems existing in clinical use, Chinese scholars have made a lot of improvements on sharps containers.The author suggests that relevant units should consider the design concept of clinic to develop and popularize more reasonable safe sharps containers for clinical application, and take other comprehensive behavioral control measures, so as to effectively reduce the occurrence of sharp injury.

Survey on WeChat Operation in Municipal Public Hospitals / 医学信息学杂志

The paper surveys on WeChat operation in 34 municipal public hospitals in Shanghai,including aspects like functional positioning,information display,service function and characteristic function and so on,and puts forward related suggestions on development of hospital official WeChat,including aspects like making industrial standard,promoting tiered diagnosis and treatment and giving importance to data collection,etc.

Molecular mechanism of calpain in regulating macrophage polarization mediated by NF-κB/STAT3 signaling pathways / 复旦学报（医学版）

Objective To investigate the molecular mechanism of calpain in regulating macrophage polarization.Methods Macrophages (RAW264.7) were transfected with siRNA by Lipofectamine 2000 to konckdown calpain1 and calpain2,respectively.The mRNA levels of markers in M1 (IL-23,TNF-α and iNOS) and M2 (IL-10,TGF-β and Arg-1) were measured by qRT-PCR.The levels of proteins in signaling pathways (NF-κB/STAT3) were measured by Western blot.The ability of macrophage migration was detected by Transwell assay.Results The expression level of calpain1 was lower in M1 than that in M2 (P＜0.05),but the expression level of calpain2 was significantly higher in M 1 than that in M 2 (P＜0.05).In calpain1-siRNA group,the mRNA levels of M1-type macrophages markers and M2-type macrophages markers were decreased by lipopolysaccharide (LPS) stimulation;The mRNA levels of M1-type macrophages markers in calpain2-siRNA group were significantly reduced (P ＜ 0.05),while the mRNA levels of M2-type macrophages markers were significantly increased (P ＜ 0.05).In calpain2-siRNA intervention group,the total phosphorylation inhibitor of nuclear factor kappa-B kinase (p-IKK) protein level of LPS-induced macrophages was decreased;in IL-4-induced macrophages,the protein level of plasmic signal transducers and activators of transcription 3 (STAT3) was also decreased,but there was no significant difference in total level of phosphorylation-p65 (p-p65).It was also found that the ability of migration was reduced by the interventions of calpain1-siRNA and calpain2-siRNA as compared with control-siRNA intervention (P＜0.05).Conclusions Calpain2 may potentially promote M1 polarizations by NF-κB and STAT3 signaling pathways,and inhibit the ability of its migration by the interventions of calpain1-siRNA and calpain2-siRNA.

Effect of psychological intervention combined with antiphlogistic and analgesic ointment on phlebitis caused by intravenous indwelling needle / 中国生化药物杂志

Objective To investigate the effect of psychological intervention and anti-inflammatory and analgesic ointment on phlebitis caused by intravenous indwelling needle. Methods Selected from December 2015 to April 2017 in our hospital treated with intravenous indwelling needle caused by phlebitis patients 96 cases, were randomly divided into control group and study group, each group of 48 cases.The control group received phlebitis caused by intravenous indwelling needle, and the study group received phlebitis, analgesic plaster and psychological intervention in the treatment of phlebitis caused by intravenous indwelling needle. The clinical efficacy of the two groups was recorded. The data were input into SPSS statistical software and analyzed. Results The study group of intravenous indwelling needle induced phlebitis of patients with clinical total efficiency up to 87.50%, total effective rate of the control group was only 70.83%, (P<0.05) data; after treatment, the scores of SDS and SAS scales in the two groups were significantly lower than before, and the negative effect of the study group was better (P<0.05). Conclusion The application of anti-inflammatory analgesic cream combined with psychological intervention can significantly improve the clinical efficacy of phlebitis caused by intravenous indwelling needle, and is conducive to the protection of their quality of life, physical and mental health.

Effect of psychological intervention combined with antiphlogistic and analgesic ointment on phlebitis caused by intravenous indwelling needle / 中国生化药物杂志

Objective To investigate the effect of psychological intervention and anti-inflammatory and analgesic ointment on phlebitis caused by intravenous indwelling needle. Methods Selected from December 2015 to April 2017 in our hospital treated with intravenous indwelling needle caused by phlebitis patients 96 cases, were randomly divided into control group and study group, each group of 48 cases.The control group received phlebitis caused by intravenous indwelling needle, and the study group received phlebitis, analgesic plaster and psychological intervention in the treatment of phlebitis caused by intravenous indwelling needle. The clinical efficacy of the two groups was recorded. The data were input into SPSS statistical software and analyzed. Results The study group of intravenous indwelling needle induced phlebitis of patients with clinical total efficiency up to 87.50%, total effective rate of the control group was only 70.83%, (P<0.05) data; after treatment, the scores of SDS and SAS scales in the two groups were significantly lower than before, and the negative effect of the study group was better (P<0.05). Conclusion The application of anti-inflammatory analgesic cream combined with psychological intervention can significantly improve the clinical efficacy of phlebitis caused by intravenous indwelling needle, and is conducive to the protection of their quality of life, physical and mental health.

Effect of EphB4/EphrinB2 reverse signal on angiogenesis induced by Xuefu Zhuyu Capsule () containing serum in human microvascular endothelial cell 1 / 中国结合医学杂志

<p><b>OBJECTIVE</b>To evaluate the effect of Xuefu Zhuyu Capsule ()-containing serum (XFZY-CS) on EphB4/ephrinB2 and its reverse signal in human microvascular endothelial cell-1 (HMEC-1).</p><p><b>METHODS</b>XFZY-CS and the blank control serum were collected. HMEC-1 cells were randomly assigned to 6 groups including the concentration 1.25%, 2.5%, and 5% XFZY-CS groups and their blank serum control ones. The angiogenesis effect of XFZY-CS was tested with an in vitro tube formation assay and the best condition of pro-angiogenesis was determined. The effect of XFZY-CS on EphB4/ephrinB2 and the reverse signal were determined by Western blot and real-time quantitative polymerase chain reaction, respectively; we also confifirmed the results through activating and inhibiting the reverse signal by EphB4/fc and pyrophosphatase/ phosphodiesterase2 (PP2).</p><p><b>RESULTS</b>XFZY-CS promoted angiogenesis at the concentration of 2.5% corresponding serum after being cultured for 48 h, while inhibited angiogenesis at the concentration of 5% after culturing for 48 and 72 h. Under the 2.5% serum concentration, XFZY up-regulated the expression of EphB4-mRNA at 12 h (P<0.05), and down-regulates its expression at 24 h (P<0.01). Protein expression of EphB4 was apparently up-regulated at 12 h and down-regulated at 24 h. The phosphorylation of ephrinB2 increased at 9 h (P<0.05). In addition, 2.5% XFZY-CS played a similar role as the reverse signaling activator EphB4/Fc ranging from 0.5 to 5 μg/mL (P>0.05). XFZY-CS also reduced the inhibitive effect of PP2 in limited periods.</p><p><b>CONCLUSIONS</b>EphB4/ephrinB2 was the upstream signal in the process of angiogenesis and its reverse signaling was responsible for XFZY's effect on promoting angiogenesis.</p>

Comparison of development of gastric insufflation related to different peak inspiratory pressures during facemask ventilation in pediatric patients: ultrasonographic measurement / 中华麻醉学杂志

Objective To compare the development of gastric insufflation related to different peak inspiratory pressures (PIPs) during facemask ventilation in the pediatric patients.Methods Ninety male pediatric patients,aged 2-4 yr,of American Society of Anesthesiologists physical status Ⅰ,scheduled for elective surgery under general anesthesia,were randomly divided into 5 groups (n =18 each) using a random number table:PIP 8 cmH2O group (group P8),PIP 10 cmH2O group (group P10),PIP 12 cm H2O group (groupP12),PIP 14cmH2O group (group P14) and PIP 16 cmH2O group (group P16).Anesthesia was induced with fentanil,propofol and rocuronium in sequence.After loss of eyelash reflex,positive pressure facemask ventilation was performed for a 120 s period in pressure-controlled mode.Gastric insufflation was detected by real-time ultrasonography of the antrum,and cross-sectional antral area was measured using ultrasonography before facemask ventilation and at 120 s of facemask ventilation.The pulse oximetry (SpO2),tidal volume (VT),end-tidal pressure of carbon dioxide (PETCO2) and end-tidal oxygen concentration (ETO2) were recorded at 30,60,90,and 120 s of facemask ventilation.The development of gastric insufflation and hypoventilation was recorded.Results Compared with group P8,the incidence of gastric insufflation was significantly increased in group P16 (P＜0.01),and no significant change was found in the incidence of gastric insufflation in the other groups (P＞0.05),the incidence of hypoventilation was significantly decreased,VT and ETO2 were increased,and PET CO2 was decreased in P12,P14 and P16 groups,and PETCO2 was significantly decreased at 120 s of facemask ventilation (P＜ 0.05 or 0.01),and no significant change was found in the other parameters in group P10 (P＞0.05).Compared with P12 and P14 groups,VT was significantly increased,PEHTCO2 was decreased at 120 s of facemask ventilation (P＜0.05),and no significant change was found in the incidence of hypoventilation and ETO2 in group P16 (P＞0.05).There was no significant difference between group P12 and group P14 in the incidence of hypoventilation,VT,PETCO2 and ETO2 (P＞0.05).The pediatric patients showed a certain CO2 accumulation [PETCO2 (40.6±4.0) mmHg] at 120 s of facemask ventilation in group P8,and the pediatric patients showed excessive ventilation [PETCO2 (23.6± 1.4) mmHg],and cross-sectional antral area was not measured using ultrasonography in three cases because of excessive gastric insufflation in group P16.Conclusion PIP at 12-14 mmHg in pressure-controlled ventilation mode can not only ensure adequate preoxygenation and but also avoid excessive gastric insufflation during facemask ventilation in the pediatric patients.

Polyester fabrics for repair of large chest wall defects after tumor resection in 46 cases / 中国组织工程研究

BACKGROUND:Polyester fabric as a common clinical consumable item is characterized by simple drawing, low cost, and high toughness and ductility, and can serve as a good repair material. OBJECTIVE:To investigate the clinical efficacy of polyester fabrics used for huge chest wal repair. METHODS: Totaly 46 patients with chest wal tumors, aged 39-73 years, including 29 males and 17 females. These patients were randomly and equaly divided into observation group and control group. After the removal of chest wal tumors, patients in the observation group underwent polyester fabric repair of huge chest wal defects, and those in the control group were treated with autologous pedicle flap for repair of huge chest wal defects. The clinical efficacy and patient satisfaction were recorded in the two groups. RESULTS AND CONCLUSION: After treatment, al the patients could feel up to their daily work, and there were no death and serious complications. Only two cases developed postoperative local effusion, and then recovered after wound drainage. Thoracic appearance was good in al patients, and the patients did not feel discomfort at the reconstruction site during breathing and movement. At the end of 6-24 months of folow-up, X-ray review showed good reconstruction of the thorax, and there were no loose transplants, foreign body rejection, chest wal deformity, recurrence and serious complications. Clinical efficacy and patient satisfaction were better in theobservation group than the control group (P < 0.05). These results show that polyester fabrics for the repair of huge chest wal defects are effectively, safe and reliable.

Roles of bFGF in endothelial cell tube formation induced by xuefu zhuyu decoction under non-anoxia condition / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To explore the roles of basic fibroblast growth factor (bFGF) on tube formation induced by xuefu zhuyu decoction (XZD) under non-anoxia condition.</p><p><b>METHODS</b>Using serum pharmacology technique, endothelial cell line ECV304 cells were incubated in routine 95% O2. ECV304 cells were intervened by 1.25%, 2.50%, and 5.00% XZD containing serums and the vehicle serum for 48 h. The effects of XZD on tube formation, bFGF contents and its transcription levels were assessed by in vitro tube formation assay, enzyme-linked immunosorbent assay (ELISA), and reverse transcriptase polymerase chain reaction (RT-PCR), respectively.</p><p><b>RESULTS</b>Three concentrations of XZD containing serums could not only obviously promote the tube formation bFGF level, but also up-regulate bFGF contents in the supernate and its transcription levels. The shapes of lumens were more regular in those induced by 1.25% and 2.50% XZD containing serums.</p><p><b>CONCLUSION</b>XZD induced angiogenesis via up-regulating the bFGF expression under non-anoxia condition.</p>

Association between variable number of tandem repeat polymorphism of thymidylate synthase gene and efficacy of pemetrexed in the treatment of advanced non-small cell lung cancer / 肿瘤

Objective: To investigate the association between variable number of tandem repeat (VNTR) polymorphism in 5'-untranslation region (5'-UTR) of thymidylate synthase (TS ) gene and the efficacy of pemetrexed-based treatment in non-small cell lung cancer (NSCLC). Methods: Peripheral blood samples were collected from 90 patients with advanced NSCLC and the genomic DNAs were extracted from these blood samples. The VNTR polymorphism in 5'-UTR of TS gene was detected by fluorescent labeled PCR and multiplex short tandem repeat polymerase chain reaction in combination with capillary electrophoresis. Results: The homozygosis (3R/3R and 2R/2R) and heterozygosis (2R/3R and 3R/4R) of VNTR polymorphism in 5'-UTR of TS gene were not associated with the efficacy of pemetrexed. The progression-free survivals, disease control rates and the objective response rates in patients harboring homozygosis (3R/3R and 2R/2R) and heterozygosis (2R/3R and 3R/4R) were 112 and 94 d (P = 0.549), 64.3% and 67.6% (P = 0.745), and 12.5% and 8.8% (P = 0.591), respectively. The patients harboring 2R alleles had similar clinical outcomes as compared with those harboring 3R alleles (progression-free survival: P = 0.518; disease control rate: P = 0.631; objective response rate: P = 0.541). Conclusion: TS gene VNTR polymorphism may not be associated with clinical outcomes of advanced NSCLC treated with pemetrexed. Copyright © 2012 by TUMOR.

Immunogenicity of sabin inactivated poliovirus vaccine induced by diphtheria-tetanus-acellular pertussis and Sabin inactivated poliovirus combined vaccine / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>In order to search the preparation process and optimazing dosage ratio of adsorbed diphtheria-tetanus-acellular pertussis and sabin inactivated poliovirus combined vaccine (DTaP-sIPV), the neutralizing antibody titers of IPV induced by different concentration of DTaP-sIPV were investigated on rats.</p><p><b>METHODS</b>Two batches of DTaP-sLPV were produced using different concentration of sIPV and the quality control was carried. Together with sabin-IPV and DTaP-wIPV ( boostrix-polio, GSK, Belgium) as control group, the DTaP-sIPV were administrated on three-dose schedule at 0, 1, 2 month on rats. Serum sample were collected 30 days after each dose and neutralizing antibody titers against three types poliovirus were determined using micro-neutralization test.</p><p><b>RESULTS</b>Two batches of prepared DTaP-sIPV and control sLPV were according to the requirement of Chinese Pharmacopoeia (Volume III, 2005 edition) and showed good stability. The seropositivity rates were 100% for sabin inactivated poliovirus antigen in all groups. The GMTs (Geometric mean titers) of neutralizing antibodies against three types poliovirus increased.</p><p><b>CONCLUSION</b>The prepared DTaP-sIPV was safe, stable and effective and could induced high level neutralizing antibody against poliovirus on rats.</p>

Evaluation on the effects of an education program regarding the sedentary behavior among school-aged children using Transtheoretical Model / 中华流行病学杂志

Objective To evaluate the outcome of a health education program on sedentary behavior among primary and secondary school children through Transtheoretical Model. Methods Five primary schools and four middle schools were selected and students from grade 3 to 5 in primary schools and grade 1 to 2 in middle schools were selected to take part in the program, as control and intervention groups respectively. Corresponding intervention measures were provided to the intervention group, with phase, process and level of changing on sedentary behavior measured for both groups during the follow-up period. Comparison to the above items on the two groups was measured statistically. Results Behavior among the intervention group was gradually changed regarding: phase contemplation, preparation and maintenance, with the proportions in phase action and maintenance higher than the control group. After carrying out of intervention programs, the sedentary time on weekdays between the two groups did not show significant differences. However, the sedentary time on weekends of intervention group was (2.53 ± 1.62) hours, significantly lower than the hours from the baseline survey (2.84 ± 1.82) and the control group (2.78 ± 1.72) respectively.During the follow-up period, the average score of intervention group in the changing process was (2.98 ± 0.77), higher than the control group (2.80 ± 0.81 ). At the same time, the average score of intervention group in the process of changing, decisional balance (pros) and self-efficacy were 2.98 ±0.77, 3.06 ± 0.75 and 3.13 ± 0.72, respectively, all higher than data from the baseline survey. In the control group, the process of changing and the average score on self-efficacy had improved.Conclusion The corresponding intervention program seemed to have played a significant role among the school-aged children on their sedentary behavior during the weekend but no significant difference was found in the weekdays.

Research on the behavior of fruit and vegetable intake in adolescents with Transtheoretical Model / 中华预防医学杂志

<p><b>OBJECTIVE</b>To study the current situation and factors influencing the behavior of fruit and vegetable intake in adolescents, and to discuss health education strategy related to the behavior.</p><p><b>METHODS</b>1677 students were selected from primary school and middle school in urban area of Hangzhou by a multistage sampling method. The behavior of fruit and vegetable intake was surveyed by questionnaires of the patient-centered assessment and counseling for exercise plus nutrition project (PACE+) for adolescent-scale of fruit and vegetable consumption, and analyzed by Transtheoretical Model on the servings of intake, the stage of change, process of change, decisional balance and the current status of self-efficacy.</p><p><b>RESULTS</b>The average intake of fruit and vegetable in adolescents was (3.21 +/- 1.50) servings per day ("one serving" means 100 g cooked vegetable or 100 g fruit). The behavior of consuming fruit and vegetable in most of the adolescents was in the contemplation stage, accounting for 36.91% (619/1677). The process of behavior change, decisional balance (Pros) and self-efficacy existed a positive correlation with the process of stage (r(process) = 0.38, r(decisional balance (Pros)) = 0.26, r(self-efficacy) = 0.33, t values were 16.78, 11.02 and 14.31, P < 0.05). The servings of fruit and vegetable intake existed a positive correlation with stage transition and self-efficacy (beta(stage transition) = 0.665, t = 35.07, P < 0.05; beta(self-efficacy) = 0.050, t = 2.63, P < 0.05), and existed a negative correlation with decisional balance (Cons) (beta(decisional balance (Cons)) = -0.051, t = -2.84, P < 0.05).</p><p><b>CONCLUSION</b>Fruit and vegetable intake of these adolescents are under the recommended dietary intake. Along with behavior stage development and self-efficacy improvement, the intake of fruit and vegetable also increased correspondingly. Intervention strategies should aim at improving the awareness of adolescents on the health benefits of fruit and vegetable intake and promoting their confidence to reach the recommended servings.</p>

Effect of nano-TiO(2) intratracheal instillation on lipid metabolism of AopE gene-knockout mice / 中华预防医学杂志

<p><b>OBJECTIVE</b>To investigate the effect of nano-TiO(2) intratracheal instillation on the progression of dyslipidemia and atherosclerosis in apolipoprotein E-knockout mice.</p><p><b>METHODS</b>The nano-TiO(2) was ultrasound with phosphate-buffered saline solutions (PBS) into its suspension for exposure. A total of 46 specific pathogen free (SPF) level of 11-week-old male apolipoprotein E-knockout mice were randomly divided into groups by their body weights: non-treatment group (8 mice), PBS control group (9 mice), high dose group (1.0 mg/ml, 10 mice), medium dose group (0.5 mg/ml, 10 mice), and low dose group (0.1 mg/ml, 9 mice). Except the non-treatment group, mice from other groups were intratracheally instilled with 0.05 ml each time, twice a week. After exposure of 6 weeks, viscera index, blood TC, TG, HDL-C, LDL-C, and organic lipid ratio were assessed as biomarkers. Artery and aortic root issues were assessed by histopathology.</p><p><b>RESULTS</b>After 5 weeks exposure, mice body weights in high dose group ((29.7 ± 1.9) g) started to drop, compared to PBS control ((31.3 ± 1.9) g, t = -1.58, P < 0.05) and low dose group ((31.4 ± 1.4) g, t = -1.17, P < 0.05); after 6 weeks, high dose group ((28.8 ± 1.5) g) was lower than PBS control ((30.4 ± 1.9) g, t = -1.60, P < 0.05), non-treatment group ((30.2 ± 1.3) g, t = -1.43, P < 0.05) and low dose group ((30.6 ± 1.0) g, t = -1.83, P < 0.05). TC levels of non-treatment, PBS control, high dose group, medium dose group and low dose group were (2.92 ± 1.18), (3.12 ± 0.73), (4.19 ± 1.86), (3.46 ± 0.72) and (2.57 ± 0.64) mmol/L, respectively; TG levels were (0.39 ± 0.13), (0.39 ± 0.08), (0.60 ± 0.21), (0.55 ± 0.19) and (0.41 ± 0.11) mmol/L, respectively; HDL-C levels were (1.67 ± 0.45), (1.54 ± 0.67), (0.93 ± 0.50), (1.02 ± 0.48) and (1.31 ± 0.64) mmol/L; TG levels of high dose group were higher than that of non-treatment group (t = 1.27, P = 0.03) and low dose group (t = 1.62, P = 0.01); TG levels of medium dose group was higher than PBS control (t = 0.16, P = 0.04), and TC levels of high dose group were higher than PBS control (t = 0.22, P = 0.01), non-treatment group (t = 0.22, P = 0.04) and low dose group (t = 0.20, P = 0.03), and HDL-C levels of high dose group were lower than PBS control (t = -0.61, P = 0.04) and non-treatment group (t = -0.74, P = 0.04); organic lipid ratio of each group were (2.27 ± 0.51)%, (2.06 ± 0.53)%, (2.90 ± 0.50)%, (2.60 ± 0.23)%, (2.24 ± 0.45)%; high dose group were higher than PBS control (t = 0.85, P = 0.00), non-treatment group (t = 0.64, P = 0.03) and low dose group (t = 0.67, P = 0.01); medium dose group was higher than PBS control (t = 0.54, P = 0.02). The plaque lipid content and calcium content which showed the progression of atherosclerosis and plaque rupture were elevated in medium and high dose groups.</p><p><b>CONCLUSION</b>Intratracheal instillation of nano-TiO(2) can induce dyslipidemia and accelerate the development of atherosclerosis and plaque rupture in ApoE-/-mice.</p>

Antimicrobial resistance of clinical isolates of Stenotrophomonas maltophilia / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the antimicrobial resistance of clinical isolates of Stenotrophomonas matophilia (SMA) and the mechanisms of their drug resistance.</p><p><b>METHODS</b>Disc diffusion method (NCCLS) was used to detect the resistant patterns of 88 initial SMA isolates resistant to 12 antibiotics isolated from a local hospital in the past 4 years. PCR was used to detect the 7 aminoglycosides modifying enzymes genes (AME) against amikacin and gentamicin. Metal-beta-lactamases (MBLs) were screened by synergic method, and extended-spectrum beta-lactamases (ESBLs) were detected by double-disk synergy test.</p><p><b>RESULTS</b>The resistance rates of the SMA isolates were 0%-9.7% to minocycline, 12.5%-22.6% to ticarcillin-clavulanic acid, 12.5%-28.6% to levofloxacin, 18.8%-33.3% to doxycycline, 18.8%-40% to sulfamethoxazole compound, 50%-65.7% to ciprofloxacin, 50%-66.7% to cehazindme, 54.8%-66.7% to amikacin, 75%-100% to gentamicin, 81.3%-100% to piperacillin, 87.5%-100% to aztreonam and 93.5%-100% to imipenem. Aac(3)-I and ant(4')-II were not detected in these strains. The positive rates of the other 5 AME genes of aac(3)-II, ant(2'')-I, aac(6')-I, aac(3)-III, aac(3)-IV were 2.3%, 5.7%, 8%, 10%, and 10%, respectively. SMA strains producing ESBLs were found at the rate of 38.6%; 25% of the strains were MBL-producing, and 13.6% produced both ESBLs and MBLs.</p><p><b>CONCLUSION</b>Most of the SMAs we isolated are multidrug-resistant through various mechanisms. The choice of antibiotics should be made according to the susceptibility results.</p>

Using spatial autocorrelation analysis to study spatial heterogeneity of liver cancer in Guangxi / 中华流行病学杂志

Objective To study the spatial distribution characteristics of liver cancer in Guangxi so as to provide evidence for the development of congol and prevention on liver cancer.Methods The average eight year morbidity was computed,using the rates of liver cancer in 2000-2007.The spatial statistics module of GIS was used to conduct spatial autocorrelation analysis.and the disease mapping Was drawn,using the Map Info 8.0 software.Results The average morbidity rate Was clustered in Guangxi in the past eight years.with Moran's I index as 0.34 and P value below 0.01.G index appeared to be 0.77 and the Pvalue Was below 0.01.Moran's I correlogram lifled up in four spaces,specifically,the cluster took place in both nlacro-scale(one to three spatial intervals,45 to 135 km real Scale)and micro-scale(16 to 18 spatial intervals,720 to 800 km real scale).When the spatial interval became 14 and real scale was 60 km.the spatial distribution of liver cancer showed the most intensive autocorrelation.Most of the regions with high morbidity would be clustered in the southwest and southern parts,along the Coastal areas of Guangxi while the regions with low morbidity clustered in the northern part of Guangxi.Conclusion Liver cancer was found un-randorely distributed and geographitally clustered in Guangxi in 2000-2007.