Many researches have shown that atmosphere pollution and meteorological factors are related closely. The relations between the particle concentration in atmosphere and meteorological factors including wind speed,wind direction,air pressure,temperature,humidity,precipitation and atmosphere stability vary in different researches. Taking into consideration the complexity of meteorological factors and the components and concentration index of particles,it is more reasonable to do multi-factor analysis. But the results of multi-factor analysis also show obvious diversity and complexity due to different research objects,methods and measuring indexes. Therefore,different models for the prediction of particle concentration are needed for the factors such as area,time and meteorological conditions always change.

0 05) for inducible VT; Utility of QTD≥70ms combined with positive VLP had a more satisfied outcome than using either of these abnormalities in predicting inducible VT. Conclusion QTD is an easily measurable electrocardiographic index for predicting coronary heart disease.

Objective:To establish an HPLC method for the determination of calcium disodium edetate in fosaprepitant dimeglu-mine for injection. Methods:The chromatographic column was Agilent Zorbax Eclipse XDB C18(250 mm ×4.6 mm,5μm). The mo-bile phase consisted of 0. 2% tetrabutylammonium hydroxide(adjusting pH to 4. 0 with phosphoric acid)-acetonitrile(85∶15). The flow rate was 1. 0 ml·min-1 . The detection wavelength was 254 nm. The chromatographic column temperature was 35℃. The injection volume was 20μl. Results:The calibration curve was linear within the range of 26. 06-104. 24μg·ml-1(r=0. 999 8) for calcium di-sodium edetate. The average recovery was 99. 51% (RSD=0. 25%, n=9). Conclusion: The method is simple, rapid, accurate, specific and reproducible, and can be used in the determination of calcium disodium edetate in fosaprepitant dimeglumine for injection.

Objective To establish the model of abdominal heterotopic heart transplantation and grope steady operation methods.Methods The heart transplantation was performed in the control group(group A) and experiment group(group B) with 30 rats in each group.Another 30 animals not performed the operation were as the blank group(group C).During the procurement of the donor heart saline solution containing heparitin was injected into the inferior vena cava of liver.At the same time abdominal aorta was transected.Then heart was perfused until it stopped.The activity of superoxide dismutase(SOD) and content of malondialdehyde(MDA) in blood was measured after transplantation.Results The total perfusion time of the graft was shortened within 2 min and hot ischemia time was shortened within 25 s in the group B.The activity of SOD and content of MDA between two groups was significantly different(P<0.05).Conclusion The perfusing method improved with new technique is quicker and more effective than the traditional one and results in the successful rate improvement.

As an important indicator of total hip arthroplasty (THA) the rate and degree of offset reconstruction play an important role in improving the prognosis and life quality of patients. The reconstruction of femoral offset is closely related to reserved length of calcar femorale, the head and neck length of prosthesis, angle degree of neck shaft and whether lower limb is isometric. Reconstruction strategy includes making a meticulous and standard measurement before the surgery, predicting the reserved length of calcar femorale, selecting a prosthesis with approximate anatomical neck-shaft angle and reconstructing offset by adjusting the head and neck length of the prosthetic during the operation. The aim of this article was to introduce the research progress and influence of offset on hip function, prosthetic wear and postoperative complications such as pain, limp and unequal leg length, and to discuss the reconstruction strategy.
Arthroplasty, Replacement, Hip ; adverse effects ; methods ; Femur ; surgery ; Humans ; Reconstructive Surgical Procedures ; adverse effects ; methods

Purpose To study NF-κB gene expression level in mouse hepatocellular carcinoma cell lines with differently lymphatic metastasis potentials and to discuss its roles in lymphatic metastasis.Methods Using real-time quantitative PCR, NF-κB gene expression level was detected in mouse hepatocellular carcinoma cell lines, including Hca-P with low lymphatic metastasis potential and Hca-F with high lymphatic metastasis potential.Results NF-κB mRNA expression in Hca-P and Hca-F cell lines were (1.41±0.48)×10~(-3),and (2.95±0.22)×10~(-3) (P<0.01),respectively.NF-κB mRNA expression levels were increased with metastasis potential.Conclusion NF-κB gene may play an important role in lymphatic metastasis of hepatocellular carcinoma.

ObjectiveTo study the effects of different priming dose of muscle relaxant at the onset and endotracheal intubation conditions.Methods120 ASA Ⅰ～Ⅱ grade patients were randomly divided into 6 groups (n=6),vecuronium group (V 1,V2,V3) and cis-atrscurium group (C1,C2,C3).All patients were induced with propofol plasma (TCI)3 μg/ml,fentanil3 μg/kg.The V1 and C1 group were not given priming dose,and the V2,V3,C2,C3 groups were given priming dose of 10 μg/kg,20 μg/kg vecuronium and 15 μg/kg,30 μg/kg cis-atracurium.Intubating conditions were evaluated,and the onset time was monitored with train-of-four (TOF) technique.ResultsIntubating conditions were excellent in all patients.The onset time of priming groups of the four different doses was significantly shorter than that of the nonpriming group [(80.5±7.2) vs (146±10.7);(79.8±6.5) vs (146±10.7);(138.5±7.2) vs (218±10.7) ; (127.1±6.5) vs (218±10.7),P ＜ 0.05 ].ConclusionsThe taking-effect time of priming dose of muscle relaxant was significantly shorter than that of the nonpriming dose group.Increasing the priming dose not decrease onset time more than the smaller dose.

Objective:To examine the expression of CLC-3 in colorectal tissues and the effect of CLC-3 on the viability and invasion of colorectal cancer (CRC) SW480 and SW620 cells. Methods:The mRNA levels of CLC-3 in CRC cell lines were determined by RT-PCR. CLC-3 expression was inhibited by adding DIDS or NPPB to the CRC cells. Subsequently, cell viability and invasion were assessed by CCK-8 assay and Transwell assay, respectively. In addition, the effects of DIDS and NPPB on the Wnt orβ-catenin signaling pathways were de-termined by Western blot analysis. Results:The mRNA level of CLC-3 was remarkably increased in the CRC tissues compared with that in normal colorectal tissues (P<0.05) and was positively correlated with the T stage of CRC. The blockade of CLC-3 inhibited the viability and invasion of CRC cells (P<0.05). The expression ofβ-catenin, C-myc, cyclin D1, Ki-67, and survivin were evidently reduced by the in-hibition of CLC-3 (P<0.05). Conclusion:The inhibition of CLC-3 decreases the cell viability and invasion of CRC cells by reducing the ex-pression of the proteins related to the Wnt orβ-catenin signaling pathway.

A series of andrographolide derivatives with the structure of 12-N-substituted-14-deoxyandrographolide were synthesized from the parent compound andrographolide.Their antitumor activities were preliminarily evaluated on various cancer cell lines and compound 4d stood out due to its potent growth inhibitory effect in comparison with andrographolide.Compound 4d also demonstrated significant antitumor effect on human hepatoma HepG2cells in vitro and on sarcoma 180 (S180) and hepatoma 22(H22)-bearing mice in vivo.Then,the apoptosis induced by compound 4d in HepG2cells was detected by Annexin V/PI double staining assay.Further mechanic study showed that the expression of p53 and Bax was significantly elevated and that of Bcl-2was downregulated in 4d-treated HepG2cells.Collectively,these data suggested that compound 4d had remarkable antitumor effect both in vitro and in vivo and could effectively induce apoptosis via a p53-dependent pathway in HepG2 cells,thus deserving further investigation.

Objective To investigate the status of fatigue and depression and their influencing factors in patients with acute coronary syndrome, and analyse the correlation of fatigue, depression and self-management behavior. Methods 113 patients were investigated by using Fatigue Symptom Inventory (FSI), Patient Health Questionnaire-9 (PHQ-9), Coronary artery disease Self-management Scale (CSMS). Results The score of fatigue was (4.59±1.93)points, while depression scored (5.05±1.48)points and self-management behavior scored (57.29 ±8.29)points; the score of fatigue, depression of female patients were higher than that of male patients, which had statistical difference(t=2.535-5.894, P<0.05);Regression analysis showed that gender, time of illness, number of other chronic diseases were major factors affecting fatigue while gender and treatment method were major factors affecting depression; there were negative ralationships between self-management and fatigue, self-management and depression (r=-0.855-0.682). Conclusions Fatigue, depression are common in patients with acute coronary syndrome, and can affect their self-management behavior, and the female patients are more susceptible to fatigue and depression.