Objective To compare the influence of open access journals ( OAJ ) of biomedicine on academic exchanges by empirically analyzing the journals enrolled in the Chinese science citation database-the core (CSCD-C).Methods Multivariate statistical analysis was performed on OAJ and non OAJ in CSCD by using bibliometric and statistical methods,SPSS software and rank-sum test.Results The OAJ were accounted for only 31.63％ of the total enrolled journals,the average ratio of funded papers in OAJ was 72.29％.Statistical journals had high influence in the discipline.The selfcitation rates of clinical medicine OAJ and special medical OAJ were high.The average impact factor and h index in biological OAJ were high.The average impact factor of preventive medicine OAJ was high.The average h index of comprehensive non OAJ was high.Conclusions The distribution of OAJ is uneven among different disciplines.The ratio of funded papers is higher in OAJ than in non OAJ with insignificant differences in discipline influence.

Web impact of 30 foreign biomedical OA journal websites was evaluated using link analysis method.The current situation and existing problems of foreign medical OA Journal websites were discussed combined with evaluation results in order to provide references for the construction of medical OA journal websites in China.

In recent years,the United States analyzing the aging of the population brought by the increase in cardiovascular diseases such as medical equipment and its impact on the U.S. market-oriented role,combined with the present condition of population and medical device market of China,the trend of aging is pointed out and that there is a great potential market of medical device for cardiovascular disease in China,but some problems still exist,such as high price,low public acceptance,etc. According to relevant policies,corresponding suggestions were proposed for domestic medical device companies to enhance their R&D capability and adaptability to the medical system reform.

To meet the demands of managing international academic conferences on Biomedical Engineering, a management system was designed and implemented based on Internet. The system was aimed to implement the cooperation of different departments to manage common affair and academic papers of the conference together. In addition, it could be connected to the membership management system of Chinese Society of Biomedical Engineering. With its advanced, practical, humanized and expansible characteristics, the system performed seven main functions, including the management in general information, participant information, papers, reviewer information, booking, exhibition and manager information. The system proved to be feasible and optimized as well in the 7th Asia-Pacific Conference on Medical and Biological Engineering.
Biomedical Engineering ; Computer Communication Networks ; Congresses as Topic ; organization & administration ; Humans ; Information Services ; International Cooperation ; Internet

Objective To explore the possible role of neuropilin-1 (NRP-1) and extracellular regulated protein kinases (ERK) in the mechanisms underlying the promotive effect of vascular endothelial growth factor (VEGF) on the proliferation of HaCaT cells.Methods HaCaT cells were cultured in vitro and transfected with a NRP-1 expression plasmid EX-O0008-M02.Reverse transcription (RT)-PCR and Western blot were performed to detect the mRNA and protein expression of NRP-1 in HaCaT cells respectively before and after the transfection.Some HaCaT cells were divided into three groups to be transfected with liposome (liposome control group),control plasmid pReceiver-M02 (plasmid control group),and objective plasmid EX-O0008-M02 (objective plasmid group),respectively,and each of the three groups was classified into several subgroups to be treated with phosphate buffer solution (PBS),U0126 (MEK1/2 inhibitor) and VEGF alone or in combination.After additional culture,methyl thiazolyl tetrazolium (MTT) assay was performed to determine the proliferative activity of HaCaT cells,Western blot to quantify the expression of total and phosphorylated ERK1/2 as well as proliferating cell nuclear antigen (PCNA) protein in HaCaT cells.Intergroup differences were assessed by one-way analysis of variance (ANOVA),and multiple comparisons and correction were done by using the least significant difference (LSD) test.Results RT-PCR and Western blot analysis confirmed that the transfection with NRP-1 effectively promoted the mRNA and protein expression of NRP-1 in HaCaT cells.A significant increase was observed in cellular proliferative activity (absorbence value at 570 nm) in the objective plasmid group compared with the liposome control group and plasmid control group (0.88 ± 0.14 vs.0.63 ± 0.07 and 0.62 ± 0.13,F =8.755,P ＜ 0.05),also in the VEGF-stimulated objective plasmid group compared with the VEGF-stimulated plasmid control group (1.14 ± 0.18 vs.0.88 ± 0.10,F =4.591,P ＜ 0.05).The U0126 pretreatment markedly suppressed the VEGF-induced proliferation of A375 cells in the objective plasmid group (0.50 ± 0.13 vs.1.14 ± 0.18,F =42.106,P ＜ 0.01).As Western blot analysis suggested,the objective plasmid significantly enhanced the VEGF-induced increase in ERK1/2 phosphorylation degree and PCNA expression intensity in HaCaT cells compared with the control plasmid,but the enhancing effect of objective plasmid was effectively inhibited by U0126.Conclusion The activation of ERK1/2 signaling pathway may play a key role in the NRP-1 protein-mediated promotive effect of VEGF on the proliferation of HaCaT cells.

OBTECTIVE:To compare th e clinieal effect of postoperative patient-controlled analgesia with epidural tr amadol, intravenous fentanyl METHOD:The 75 cases of abdomina l surgical patients were randomly divided into 3 groups:25 cases epidural trame dol (group TE),25 cases intravenous tramadol (group TI) and the others intraveno us fentanyl (group FI),with a Abbot 13960-36 PCA pump in the loading-continuous- PCA model. RESULTS:①in the postoperative 4, 24 and 48 hours,the a mount of drugs,the total deliveries,the ratios of deliveries to demands (D/Drati o) and VAS scores used in group TE and TI were similer (P＞0.05).The amount of d rugs used in each group was TI＞FI,TE＞FI,P＜0.05,but VAS scores were similar.② The incidence of nausea was group TE 12%,group TI 8% and FI 12%;the incidence of vomiting was 4% to 4% to 8% separately.Respiratory depression had been observed in group FI 4%. CONCLUSION:Results indicated that tramadol is safe and effective for the postoperative patient-controlled ana lgesia.The effects of PCEA were similar.

Objective To explore the semitivity of ovarian cancer cell line SKOV3 to paclitaxel,oroteasome inhibitors,bortezomib,and their combination.Methods The methyl thiazolyl tetrazolitim (MTT)assay was applied to examine the cell viability after treatment.The annexin V-propidium iodide apoptosis detection kit was used to determine the apoptosis rate of different groups.Western blot assay was used to evaluate the expression levels of phosphorylated protein kinase B(AKT)and glycogen synthase kinase-3 beta(GSK-3β).Results In MTT assay,the cell viability ratios of the combination group at serial time points from 12,24,36,48 and 72 hours Were(65.2±5.8)%,(58.3±14.4)%,(35.3±5.0)%,(19.2±1.5)%,and(11.4 ±2.5)%,which were significantly lower than those of the paclitaxel group (P<0.05).After arug treatments,apoptosis rates of paclitaxel group,bortezomib group and the combination group were (14.7±0.5)%,(15.1±0.8)%and(20.5±0.7)%respectively.The rate of the combination group was significantly higher than that of non-treated group and paclitaxel group(P<0.05).Western blot assay showed the changes in expression levels of phosphorylated AKT and GSK-3β,which were decreased significantly after paclitaxd and bortezomib combination treatment [(3.2±0.8)%,(19.3±0.4)%;P<0.05].Conclusions The lethal effect of paclitaxel on tumor cells could be increased significantly by its combination with proteasome inhibitors,bertezomib.The AKT/GSK-3β signaling pathway plays an important role in the molecular mechanism of the combination treatment.

Objective To explore the sensitivity and the molecular mechanism of cisplatinresistance ovarian cancer cell line C13 to proteasome inhibitors and the combination with cisplatin. Methods After different treatments, methyl thiazolyl tetrazolium (MTT) assay was applied to examine the cell viability, annexin-V/propidium iodide(PI) apoptosis detection kit was used to determine the apoptosis rate of different groups, western blot assay was introduced to evaluate the expression levels of Fas-associated death domain-like interleukin-1 beta converting enzyme inhibitory protein (cFLIPs), and the activity of caspase-8 was examined. Results MTT assay shown that the cell viability ratios of combination group at serial time points from 12, 24, 36, 48, 60, 72 hours were ( 56.0 ± 8.4 ) %, (44.7 ± 7.3 ) %, ( 33.7 ±11.2) %, (27.6 ± 8.0) %, (27. 6 ± 7.6) % and (28.1 ± 2.4) %, which were much lower than those of cisplatin group (P <0.05). After treated for 24 hours, apoptosis rates of cisplatin group, bortezomib group and combination group were ( 16.7 ± 1.7) %, (23.4 ± 2.1 ) % and (26.9 ± 1.6) %, respectively. The rate of combination group was much higher than that of non-treated group and that of cisplatin group or bortezomib group ( P < 0.05 ). Western blot assay showed the changes of expression levels of cFLIPs, which were downregulated seriously after cisplatin, bortezomib or combination treatment [ (43.2 ± 2.3 )% vs( 75.7 ± 3.0)%vs (67.9 ± 2.1 ) %, P < 0.05 ]. The caspase-8 activity of combination group was (5.6 ± 1.6) folds than that of non-treated group, which was higher than those of other two groups [ ( 2.3 ± 1.0) and (4.2 ± 0.9 ) folds,P < 0.05 ]. Conclusions The tumor cell lethal effect of cisplatin could be increase significantly by the combination application of proteasome inhibitors, bortezomib. And the cFLIPs/caspase-8 signaling pathway may be play an important role in the molecular mechanism of the combination treatment.

To explore the application of protein fingerprint technique and differential diagnosis in bacteriological negative pulmonary tuberculosis and pneumonia ,60 patients with bacteriological negative pulmonary tuberculosis ,60 patients with pneumonia ,and 60 healthy volunteers were selected from known clinical cases .Surface strengthening laser desorption ioniza-tion time of flight mass spectrometry (SELDI ToF Ms) and protein chip technology were applied to detect serum proteins ,and analyze their protein peaks by Ciphergen protein chip 3 .1 .1 software .Comparison of the serum protein fingerprinting data from the pool of 180 patients and healthy volunteers showed significant difference in 5 protein peaks (1 028 .49 ,4 796 .56 ,7 564 .77 , 8 048 .02 ,and 11 526 .75 m/z) identified between pulmonary tuberculosis and pneumonia (P<0 .01) .The total effective rate of the 5 protein peaks as a diagnosis model for differential diagnosis of bacteriological negative pulmonary tuberculosis and pneumonia was 84 .2% (101/120) ,the specificity was 82 .5% (52/63) ,the sensitivity was 85 .9% (49/57) ,the positive pre-dictive value was 86 .7% (52/60) ,and the negative predictive value was 81 .7% (49/60) .The total effective rate of the diagno-sis model for differential diagnosis of bacteriological negative pulmonary tuberculosis ,pneumonia and healthy volunteers was 89 .4% (161/180) .The specificity was 100% (60/60) ,the sensitivity was 84 .2% (101/120) ,the positive predictive value was 100% (101/101) ,and the negative predictive value was 75 .9% (60/79) .Protein fingerprinting technology is advanta-geous of being a simple method ,quick detection ,and requires less amount of sample .It is an effective means to screening the tuberculosis specific markers .We found the good diagnosis model through the detection of serum protein by protein fingerprint-ing technology .

Objective To evaluate the clinical efficacy and safety of vancomycin and linezolid for the treatment of gram-positive neonatal bacterial sepsis.Method The data of neonates diagnosed as grampositive bacterial sepsis in neonatology department of Suzhou Municipal Hospital from June 2009 to December 2015 were retrospectively collected.These neonates were divided into vancomycin group and linezolid group.Propensity score matching (PSM) on baseline variables was used to balance the two groups by identifying a comparable group of neonates who received vancomycin and linezolid therapy.Clinical and microbiologic success rates were compared by chi-square test,and changes of laboratory parameters before and after treatment at the end of treatment were then directly compared by rank-sum test between the matched groups.In vancomycin group,correlation between trough concentration of vancomycin and clinical efficacy were evaluated.Result Totally 108 and 209 cases were respectively selected in vancomycin and linezolid groups;108 cases with well-matched baseline characteristics were included in matched linezolid group.The clinical success rates of vancomycin vs.linezolid therapy were 86.1％ (93/108) and 88.9％ (96/108) (P =0.681),and the microbiologic success rates were 91.7％ (99/108) and 93.5％ (101/108) (P =0.795).The average trough concentration of vancomycin was (12 ± 8) mg/L.The rate of reaching the high trough concentration standard was only 33.3％ (36/108).In 50 (46.3％) cases the dose was adjusted according to the initial concentration data.Compared to less than 10 mg/L,the clinical efficacy of trough concentration in 10-20 mg/L was much higher(93.9％ (46/49) vs.78.6％ (33/42),P =0.031).Total bilirubin and platelet count had significant difference between the two-matched groups (34.1 (14.9,91.0)μmol/L vs.53.0(27.0,121.6) μmol/L,P =0.034;301.0 (198.8,416.0) × 109/L vs.195.5 (94.0,283.2) × 109/L,P =0.000).The incidence of linezolid related thrombocytopenia was 13.4％ (28 cases).Conclusion The clinical effect of vancomycin and linezolid on gram-positive bacterial sepsis in neonates is comparable.The rate of trough concentration of vancomycin reaching the high trough concentration standard is low,and the clinical efficacy is related to trough concentration.Linezolid have an effect on bilirubin and platelet count,the risk of thrombocytopenia should be monitored closely during linezolid treatment.