Objective To study the value and the superiority of multi-slice spiral CT angiography of pulmonary artery in combination with deep vein of lower limb in diagnosing pulmonary embolism (PE). Methods CT pulmonary angiography (CTPA) and lower limb deep vein venography were performed in all suspected patients of PE with single or multi-slice spiral CT.The number and type of the embolus were calculated.Results Among the 44 patents of pulmonary embolism,34 patents had both PE and deep vein thrombo embolism (DVT) ,10 patients had only PE.The total ratio of the PE diagnosed with single slice spiral CT and multi-slice spiral CT was 12.1% and 19.0%, respectively , there were statistical significance, (P=0.004); the ratio of the PE upon deuto-segment pulmonary arteries was 25.3% and 29.7%, respectively, there was no statistical significance, (P=0.104); the ratio of the PE below deuto-segment pulmonary arteries was 1.1% and 10.2%, respectively, there was statistical significance, (P=0.000).Conclusion The technique of angiography of pulmonary artery in combination with deep vein of lower limb in diagnosing PE is a non-invasive, fast, sensitive and specific method for PE. Multi-slice spiral CT is superior to single slice spiral CT in the diagnosis of PE.

Objective To investigate the incidence of the peripherally inserted central catheter (PICC) complications in neonates. Methods A retrospective analysis of PICC in 201 cases in our neonatal intensive care unit (NICU) from January 2015 to October 2016, who were divided into the central group and non-central group according to the position of the catheter tip. Compare unplanned extubation rate, catheter-related bloodstream infection rate, catheter indwelling time of PICC catheter and removing reasons between these two groups. Results One hundred and sixty-five cases in central group and thirty-six cases in non-central group. The unplanned extubation rate of the central group was 18.2% (30/165) while 22.2% (8/36) of non-central group, the difference wasnot statistically significant (χ2=0.315, P=0.639). The difference of the catheter-related bloodstream infection rate (P=0.471), the catheter indwelling time and removing reasons between these two groups were not statistically significant(P>0.05). Conclusions Even if the position of PICC tip is not in superior or inferior vena, it still can be used in neonatal population, but should pay attention to safe medical care.

Increased evidences indicate that resistin is a new hormone secreted from adipose tissue, it is reported to be an important signal molecule linking between obesity,insulin resistance and type 2 diabetes. Many factors can affect the gene expression of resistin. However, the detailed function of resistin still remains mysterious and much work needs to be undertaken. [

Background and objectives To investigate the effect of hepatocyte growth factor (HGF) on left ventricular (LV) remodeling after acute myocardial infarction (AMI). Methods AMI was produced by ligation of proximal left anterior descending coronary artery(LAD) in 12 mongrel canines. These animals were randomized into 2 groups. In HGF group (n=6), canines were injected with pcDNA3-HGF lml (about 300ug) at the margin of infarcted myocardium; in control group (n=6) canines were injected with equal volume of normal saline. Cardiac function and left ventricular remodeling were evaluated with echocardiography at 1, 4, 8 weeks after MI. LV myocardium specimens were obtained at 8 weeks and stained with hematoxylin and eosin for histological examination or with sirius red to assess the collagen content. Results Compared with control group, LVEF in HGF group was significantly higher at 4 weeks (49.61+6.66 vs 39.84+6.39; P＜0.05) and at 8 weeks (51.57+8.53 vs 40.61+7.67; P＜0.05) after AMI, while LVESV was significantly lower in HGF group than that in control group at 8 weeks after AMI (18.98+3.47 vs 25.66+5.86; P＜0.05). Posterior left ventricular wall thickness decreased significantly from 1 wk to 8 wks after AMI in control group, while remained unchanged in HGF group. Compared with control group, histological examination showed more neovascularization and less scar, and sirius red staining indicated higher volume of type Ⅲ collagen (7.10±4.06% vs 3.77±1.09%; P＜0.05) and lower collagen Ⅰ/Ⅲ ratio value (1.11±0.52 vs 2.94±2.48; P＜0.05)in HGF group. Conclusion HGF gene transfer might improve cardiac function and LV remodeling after acute myocardial infarction by stimulating angiogenesis, reducing fibrosis, and reducing myocardial scarring.

Objective To evaluate the value of MRI in diagnosis of craniopharyngiomas. Methods MRI findings of 52 craniopharyngiomas were analyzed retrospectively and correlated with pathology.Results 37 cases of all 52 cases craniopharyngiomas were located on suprasellar. Craniopharyngioma fluid collections were found to be uniformly hyperintense on T 2-weighted images. However, on T 1-weighted images, the signal intensity of the fluid ranged from hypointense to hyperintense, reflecting the presence of pathological contents in these tumors. Conclusion MRI is an effective method in diagnosis craniopharyngioma due to its direct multiplanar capabilities and sensitive signal changes.

Objective The antimicrobial peptide LL-37 ( LL-37) is the mature form of Human Cationic Antimicrobial Pep-tide of 18kD (hCAP18) and play a certain regulation role in the pathogenesis of asthma .However, the mechanism is unclear.The aim of this study was to investigate the role of inflammatory release from human eosinophils induced by the antimicrobial peptide LL -37 in the pathogenesis of asthma and the underlying mechanisms . Methods Sixteen mild or medium allergic asthma patients from January 2015 to January 2016 in Panzhihua college affiliated hospital were enrolled .Another 16 healthy volunteers were enrolled as control .Pri-mary eosinophils were isolated from peripheral blood .The cells were divided into two groups:asthma group and healthy control group . Cells were divided into blank , PAF, LL37, single cytokine ( IL-5, GM-CSF) and cytokines combined with LL-37 group based on in-tervention (cell treating factors) difference;Cells were divided into PTx, WRW4, suramin, and LL-37 combined with inhibitors group based on inhibitors difference;Cells were grouped into LTD 4 and LTB4 treatment based on leukotrienen difference;ELISA was applied to analyze cysteinyl leukotrienes ( cys-LTs) level in various treatment groups;Western blot was used to detect change of cPLA 2, p-cP-LA2, ERK1/2, p-ERK1/2 in the cells from the control group after PTx and WRW 4 treatment and the level of hCAP 18 after leukot-riene treatment. Results Compared with the control 15 μg/mL LL-37 sub group, the expression of Cys-LTs was increased in the control 30μg/mL LL-37 sub group 15 and 30 minutes after the LL-37 treatment [(54.02±7.15) pg/105 vs (37.86±6.33) pg/105, (53.30±6.99) pg/105 vs (36.27±6.46) pg/105, P<0.05].Compared with the control IL-5 sub group (26.18±4.86) pg/105, the ex-pression of Cys-LTs was increased in the control IL-5+15 μg/mL LL-37 sub group (59.97±6.83) pg/105 and the control IL-5+30μg/mL LL-37 sub group (81.44±13.70) pg/105(P<0.05).Compared with the control sub group , the expression of Cys-LTs was in-creased in the asthma 15 μg/mL LL-37 sub group and the asthma 30μg/mL LL-37 sub group ( P<0.05) .Compared with the control LL-37 sub group, the expression of Cys-LTs was decreased in the control PTx sub group , control WRW4 sub group, control suramin sub group, control PTx +LL-37 sub group, and control WRW4+LL-37 sub group (P<0.05).Western blot results indicated that LL-37 treatment induced the activation and phosphorylation of ERK 1/2 in eosinophil, and PTx and WRW4 blocked the upregulation of pERK1/2 induced by LL-37.Treatment with PD inhibited the phosphorylation of cPLA 2 and the release of Cys-LTs induced by LL-37. hCAP18 was higher in the asthma groups than the healthy control . Conclusion LL-37 was identified as an eosinophil-activating pep-tide that could trigger the release of inflammatory mediators , which might be involved in occurrence and development of asthma through regulating ERK1/2 phosphorylation, inducing cPLA2 phosphorylation and finally initiate synthesis of cys-LTs.This suggests that LL-37/hCAP18 and its signaling pathway might be potential therapeutic targets for asthma .

Objective To study the value in predicting the postoperative pulmonary function of the patient with quantitative MSCT.Methods 16-slice spiral CT scanning of lung was performed in 24 patients with pulmonary carcinoma before and after the operation during eupnea.Then the postoperative forced expiratory volume in one second(FEV1) and forced vital capacity(FVC)were calculated according to the preoperative lung capacity which was measured by quantitative MSCT,FEV1 and FVC which were measured by pulmonary functional test(PFT),then the results of FEV1 and FVC predicted by MSCT were compared with that two months later after operation.Results There was significant relativity in FEV1 and FVC between predicted by MSCT before operation and measured by PFT after operation ( P was 0.190 and 0.563 respectively).Conclusion Quantitative MSCT can predict the postoperative pulmonary function exactly,which provides dependable reference data for lung resection in the patients.with pulmonary carcinoma.

Objective To evaluate the applied value of MSCT lung volumes measurement in diagnosing chronic obstructive pulmonary disease(COPD).Methods 40 patients clinically diagnosed with COPD and 26 healthy volunteers as control group underwent MSCT chest CT scanning . The relevant indicators of lung volumes were measured and calculated in comparison with the indicators of clinical lung function . The accuracy and sensitivity of every indicator of lung volumes in forecasting and screening COPD by using ROC curve method were evaluated.Results There were significant differences between the control group and the COPD group in the full expiration volume(Vex),the full inspiration volume(Vin),Vex/Vin and the ratio of the change of lung volume(P

Objective To observe the protective effect of Naoli Zhibao(NZ) on mice with learning and memory impairment.Methods (1) Thirty-two NIH mice were randomized into pseudo-operation group,model group,and low-and high-dose NZ groups(at the dose of 4 and 8 g?kg-1?d-1 respectively).Except the pseudo-operation group,the mice in other groups received the operation of cerebral ischemia/reperfusion.After treatment for 10 days,the learning and memory abilities of the mice were observed by step-down test,and the contents of malondialdehyde(MDA) and nitric oxide(NO) as well as the activities of superoxide dismustase(SOD) and glutathione peroxidase(GSH-Px) were detected.Meanwhile,the free amino acid content in mice cerebral cortex was measured with high performance liquid chromatography.(2) Forty NIH mice aged 9 months were randomized into normal control group,mimetic aging group,and low-and high-dose NZ groups(at the dose of 4 and 8 g?kg-1?d-1 respectively).The mice models of mimetic aging were induced by intraperitoneal injection of D-galactose 0.5mL for 6 weeks,and the mice in NZ groups were also given gastric gavage of NZ for 6 weeks.After treatment,the learning and memory abilities of the mice were observed by step-down test,and the contents of epinephrine(E),norepinephrine(NE) and tryptophan(TP) in mice cerebral cortex were measured.Results (1) NZ significantly improved the memory ability of mice with cerebral ischemia/reperfusion injury(P

Objective To evaluate the pharmacokinetic parameters and bioavailability of Cyclobuxine D in transdermal patch in Newzealand rabbits by determining concentration-time curve and by comparing with the pharmacokinetics of Cyclobuxine Dinjection and suspension.Methods Precolumn derivatization RP-HPLC was used to detect the concentration of Clovirobuxine D in rabbits plasma at different time,and software 3p87 was used to analyze the pharmacokinetics parameter.Results In contrast to oral delivery,relatively steadily sustained blood concentration with minimal fluctuation and prolonged peak time were presented in the rabbits over a long period after transdermal administration.The absolute bioavailability of Cyclobuxine D was 30.472 %.Conclusion Cyclobuxine D Patch exhibits good controlled-release properties and maintains appropriate blood concentration for a prolonged time.