Objective To study the effects of AuNPs@PEG-AS1411 nanoparticles on radiosensitization of human uterine cervix cancer HeLa cells.Methods AuNPs were synthesized by citrate reduction method and then functioned with PEG and PEG-AS1411, respectively.CCK-8 assay and colon forming assay were used to detect the acute and chronic toxicity effects of AuNPs on HeLa cells, respectively.At the same time, clonogenic survival assay was applied to measure the cell survival rate of HeLa cells after exposure to AuNPs@PEG and AuNPs@PEG-AS1411 combined with X-ray radiation.The intracellular uptake of AuNPs@PEG and AuNPs@PEG-AS1411 in HeLa cells were detected by ICP-MS.Results The CCK-8 assay showed that AuNPs@PEG and AuNPs@PEG-AS1411 were not toxical on HeLa cells(P ＞0.05).But the clonogenic survival assay showed that AuNPs@PEG and AuNPs@PEG-AS1411 had toxicity on HeLa cells significantly after 10 d(t =4.38-11.60, P ＜ 0.05).AuNPs functioned with AS1411 could increase the cellular uptake of AuNPs.AuNPs@PEG and AuNPs@PEG-AS1411 both had significant radiosensitive effect on HeLa cells (F =7.90,48.23, P ＜ 0.05).The values of SERDo for AuNPs@PEG and AuNPs@PEG-AS1411 were 1.12 and 1.20, respectively, when the concentration of Au was 10 mg/L.Conclusions AuNPs@PEG and AuNPs@PEG-AS1411 could cause chronic toxicity on HeLa cells instead of acute effect.PEGylated AuNPs functioned with AS1411 could enhance the radiosensitivity of HeLa cells in vitro.

Objective To evaluate the role of spinal sigma-1 receptors in the maintenance of bone cancer pain (BCP) in rats and the relationship with extracellular signal-regulated kinase (ERK).Methods Part Ⅰ Twenty-four female Sprague-Dawley rats,weighing 180-220 g,were randomized into 2 groups using a random number table:sham operation group (S group,n =4) and BCP group (n =20).BCP was induced by inoculating Walker 256 mammary gland carcinoma cells into the medullary cavity of the right tibia.Four rats were sacrificed on day 10 after inoculation in S group or on day 3,5,7,10 and 14 after inoculation in BCP group,and the L4-6 segments of the spinal cord were removed to measure the expression of sigma-1 receptors by Western blot.Part Ⅱ Forty female Sprague-Dawley rats,weighing 180-220 g,were randomized into 4 groups (n =10 each) using a random number table:sham operation group (S group),sigma-1 receptor inhibitor BD1047 group (BD group),BCP group,and BCP + BD1047 group (BCP + BD group).On day 10 to 14 after inoculation,normal saline 20 μl was injected intrathecally once a day in S and BCP groups,or BD1047 120 nmol/20μl was injected intrathecally once a day in BD and BCP + BD groups.Mechanical paw withdrawal threshold (MWT) to yon Frey filament stimulation was measured one day before inoculation,on day 3,5 and 7 after inoculation,and on day 10,12 and 14 after administration.After measurement of MWT on day 14 after inoculation,the rats were sacrificed and the L4-6 segments of the spinal cord were removed to determine the expression of phosphorylated ERK (p-ERK) by Western blot.Results Part Ⅰ Compared with group S,the expression of sigma-1 was significantly up-regulated and peaked on day 10 after operation in group BCP.Part Ⅱ Compared with S group,no significant changes were found in MWT and p-ERK expression at each time point in BD group,and MWT was decreased and p-ERK expression was up-regulated in BCP and BCP + BD groups.Compared with group BCP,after intrathecal injection of BD1047,MWT was significantly increased and the expression of p-ERK was down-regulated in BCP + BD group.Conclusion Spinal sigma-1 receptors are involved in the maintenance of BCP in rats possibly through promoting phosphorylation of ERK.

Objective To investigate the relationship between the single nucleotide polymorphism (SNP)of KCNJ1 1 (inwardly rectifying potassium channel,subfamily J,member 1 1)gene and essential hypertension (EH)in Xinjiang Kazak population.Methods The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP ) method was used to detect genotypes of rs2285676 polymorphism of KCNJ1 1, including 126 hypertensives (EH group)and 126 normotensives (NT group)in Xinjiang Kazak population.Multiple-factor unconditional Logistic regression analysis was used to evaluate the risk factors for hypertension in Xinjiang Kazak. Results Logistic regression analysis showed that KCNJ1 1-rs2285676 genotypes,sex,weight,total cholesterol and triglyceride were not associated with hypertension;body mass index (BMI)and high-density lipoprotein (HDL) were protective factors affecting hypertension while low-density lipoprotein (LDL ) was a risk factor for hypertension.Genotypes (TT,CT and CC)and allele frequencies (T and C)of the SNP of rs2285676 in KCNJ1 1 gene were 50.00%,48.41%,1.59%,74.21% and 25.79% in EH group,respectively.The differences between EH and normal control were not significant (P >0.05).Conclusion The rs2285676 polymorphism of KCNJ1 1 is not associated with EH in Xinjiang Kazak population.

Objective To investigate the quality of life(QOL)of patients with stroke and its related factors.Methods The QOL of eighty-two stroke survivors was assessed in terms of SF-36 scores,motor impairment (Fugl-Meyer),disability[Barthel index(BI)]and depression(HAMD)more than one year after their first episode.Their social demographic characteristics such as age,gender,education and income were recorded,as were the characteristics of their disease and any complications.Multiple regression analysis was used to analyse the related factors.Results The average age of the 82 subjects was 61.89 + 9.81 years(range,33-81).56 of them were male (68.2％).Scores on all items of the SF-36 for these subjects were lower than those of a normal population.Correlation analysis showed income,cost for medical care,regular exercise,movement function,ability in the activities of daily living,depression,hypertension and shoulder pain were significantly correlated with most of the SF-36 domain scores.Motor function,income and cost for medical care explained 34％ of the variance in SF-36 scores.Motor function was the single most important factor.Conclusion The major factors affecting the QOL of stroke patients are motor function,level of income and cost for medical care.Paying more attention to rehabilitation treatment,taking regular exercise and more income could help improve the QOL of stroke survivors.

Objective To explore the relationship between KCNJ11-E23K polymorphism and essential hypertension (EH) in Kazakh from Xinjiang. Methods PCR-RFLP method was used to test KCNJ11-E23K genotypes of Kazakh from Xinjiang,including 237 EH patients and 221 normotension (NT). Logistic regression analysis was used to analyze the risk factors associated with EH. Results The frequencies of KCNJ11-E23K genotype (EE and (EK + KK)) and allele (E and K) were 34.18%, 65.82%, 61.60% and 38.40%respectively in EH group. There was a significant difference between two groups (P < 0.05). Weight and EE genotype were risk factors affecting EH in Kazakh from Xinjiang. Individual who carried EE genotype and allele E were 2.501 and 1.388 times than (EK + KK) and allele K suffered from EH respectively. Conclusion KCNJ11-E23K polymorphism was associated with EH in Kazakh from Xinjiang.

Objective To investigate the clinical characteristics of acute pulmonary embolism in the elderly and its differences between the elderly and non-elderly patients,and explore the predictive effect of red blood cell distribution width(RDW)on chronic thromboembolic pulmonary hypertension (CTEPH)in patients with acute pulmonary embolism.Methods A total of 129 consecutive patients with acute pulmonary embolism admitted into Affiliated Hospital of Binzhou Medical College were selected from Jan.2009 to Dec.2013.Clinical data including the basic data,blood routine test,blood gas analysis,Doppler echocardiography during admission were retrospectively analyzed.All the patients were followed-up.Ancillary findings and changes of the disease were recorded in detail during the follow-up period.SPSS 19.0 was used to analyze the results.Results The incidences of CEPPH and venous thromboembolism(VTE)in APE patients were higher in the elderly than in non-elderly.The mean RDW and pulmonary arterial systolic pressure on admission in APE patients were higher in the elderly than in non-elderly [(14.22±2.11)％ vs.(13.48± 1.69)％,P=0.033,for mean RDW] and [(54.82± 21.77)mmHg vs.(42.20 ± 19.36) mmHg,P=0.010 for pulmonary arterial systolic pressure].The mean RDW was higher in CTEPH patients than in patients without CTEPH [(16.79 ± 3.08) ％ vs.(13.68± 1.68)％,P=0.016].Multivariate Logistic analyses showed that the increased RDW level was an independent risk factors for CTEPH in APE patients(OR=1.535,95％ CI:1.094-2.155,P=0.013).The area under receiver operating characteristics curve(AUC)of RDW level for predicting CTEPH in APE patients was 0.856(95％ CI:0.706-0.987,P＜0.001),the corresponding cut-off point was 14.85％,and the sensitivity and specificity were 88.9％ and 87.5％ respectively.Conclusions The increased RDW level could predict the risk of CTEPH to a certain extent in APE patients.

This study was aimed to assess the methodological quality of systematic literature reviews on the efficacy and safety ofTong-Xin-Luo(TXL) using the AMSTAR statement. The literatures were searched from major domestic and international databases include the CJFD Database, VIP Database, CNKI database, CBM Database Online, WanFang Data and TCM Database, Medline, Pubmed, ISI Web of knowledge, Web of science, from the database was built to 20th December, 2014. And 5 evaluators screened the literatures independently according to the inclusion and exclusion criteria. Then, all systematic reviews were assessed using the list of AMSTAR statement. The results showed that 22 literatures were finally included, which contained 17 systematic reviews and 5 meta-analysis. In the included literatures, there were different degrees of impairments on the methodological and reporting quality, which were mainly focused on program and registration, retrieving and collecting literatures, inclusion and exclusion criteria, authentic assessment, data processing, funds, and etc. The average reporting rate of AMSTAR statement was 57.02% in all included literatures. It was concluded that the methodological quality of systematic literature reviews on the efficacy and safety of TXL was relatively low from the current level of average reported rate, which affected the quality of the article. It indicated that there were different degrees of impairments in all links of test reports in current systematic reviews, which will be bound to affect the reliability of clinical evidence and the determination of clinical decision. It showed that the methodological quality of writing of such articles should be in compliance with entries of AMSTAR statement to improve its quality.

Objective To investigate the status of nutritional risk and nutritional support in general surgery patients, and to explore their association with postoperative complications and length of hospital stay.Methods From January 2014 to February 2015, 853 inpatients in general surgical wards in the Second Hospital of Hebei Medical University were enrolled.Nutritional Risk Screening 2002 (NRS 2002) was used to estimate nutritional status of patients.The patients were divided into 2 groups based on whether they received nutritional support.The length of hospital stay in days and postoperative complications were recorded.The association of nutritional risk and nutritional support with complications and length of hospital stay were analyzed.Results In the 853 surgery patients, the prevalence of nutritional risk was 31.1％ (265/853) and that of malnutrition was 5.4％ (46/853).The incidence of postoperative complications was 14.2％ (121/853).The patients with nutritional risk had a significantly higher incidence of postoperative complications compared to those without nutritional risk [29.8％ (79/265) vs.7.1％ (42/588) , P ＜ 0.000] , and a longer hospital stay [(12.5 ±6.4) days vs.(4.2 ±3.9) days, P ＜0.001].In the 853 patients, 27.3％ (233/853) received nutrition support.In the patients with nutritional risk, those on nutritional support had a significantly lower incidence of complications compared with those not on nutritional support [16.7％ (32/192) vs.64.4％ (47/73), P＜0.05] and shorter hospital stay [(7.5±4.6) days vs.(16.3±8.5)days, P ＜ 0.05].Conclusions According to NRS 2002 result, a fairly high percentage of general surgery patients may have nutritional risk.Patients with decreased body mass, less dietary intake, and at higher age may be more likely to have nutritional risk.Nutritional risk may be associated with a higher incidence of postoperative complications and longer hospital stay.Patients at nutritional risk appear to be more likely to benefit from nutritional support.

Objective To determine the association of-429T/C and G1704T polymorphisms in the receptor for advanced glycation end products gene with proliferative diabetic retinopathy (PDR).Methods Case-control study.From the Beijing Desheng Diabetic Eye Study cohort of 1467 patients with type 2 diabetes mellitus (T2DM),a total of 97 patients with PDR and 105 diabetic patients without retinopathy (DWR,duration of diabetes 15 years) were included for this study.Questionnaires were collected and general ophthalmologic examinations were performed.Biochemical analysis was conducted.DNA was extracted from peripheral venous blood.The-429T/C and G1704T single nucleotide polymorphisms were detected by the means of PCR-restrication fragment length polymorphisms.Results The frequency distribution of-429T/C in DWR group was 81.0％ in TT,16.1％ in TC,2.9％ in CC.The frequency distribution of-429T/C in PDR group was 77.3％ in TT,20.6％ in TC,2.1％ in CC.There was no significant statistical difference between the two groups (x2 =0.40,P＞0.05).Frequency of the-429T/C minor allele C in the DWR and PDR group were 11.0％ and 12.4％,respectively,with no significant statistical difference between the two groups (x2 =0.20,P＞0.05).The frequency distribution of G1704T in DWR group was 66.7％ in GG,29.5％ in GT,3.8％ in TT.The frequency distribution of G1704T in PDR group was 78.4％ in GG,21.6％ in GT.There was no significant statistical difference between the two groups (x2 =3.44,P＞0.05).Frequency of the G1704T minor allele T in the DWR and PDR group were 18.6 ％ and 10.8 ％,respectively,in which significant difference was found within the two groups (x2 =4.79,OR=1.88,95％CI:1.06-3.33,P＜0.05).Conclusions G1704T polymorphism is associated with PDR presence and 1704G allele may increase the risk of PDR.

Objective:To understand the effect of a new tracheal tube fixation device in the "double fixation" of oral tracheal intubation for critically ill patients in adult emergency department.Methods:A retrospective analysis of patients with oral tracheal intubation admitted to our EICU from January 2016 to June 2017 was performed using traditional tape and inch band fixation as a control group; the experience of treatment from July 2017 to December 2018 for patients with oral tracheal intubation, the new double-fixation method of tracheal tube fixation device was used as the observation group. The degree of displacement, oral cleanliness, facial skin allergies and injuries, and comfort of the two groups of patients was compared.Results:The rate of tracheal displacement in the experimental group was mildly 11.2% (11/98), moderately 5.1% (5/98), and the control group was mildly 24.2% (15/62), moderately 14.5% (9/62) and severe 6.5% (4/62). The incidence of facial skin allergy and skin damage was 6.1% (6/98), 0, and the control group was 24.2% (15/62), 11.3% (7/62), the difference was statistically significant ( Z value was -4.021, χ2 value was 24.48, P<0.05). The comfort score of the test group was (1.05±1.01) points, which was significantly higher than (2.10±1.71) points of the control group ( t value was 4.920, P<0.01). Conclusions:The new type of tracheal tube fixation device "dual fixation" for critically ill patients with mechanical ventilation through oral endotracheal intubation is visually beautiful, and has good firmness and comfort. It can effectively reduce the occurrence of adverse events and has good application value.