Objective To observe the effects of ilexonin A (IA) on IL-6 and M-CSF following ballon angioplasty in rabbit common carotide artery to provide experimental basis for percutaneous coronary interventions. Methods 30 Japanese rabbits were fed with high cholesterol food for 4 weeks. Then they were divided into three groups randomly. Each group had ten rabbits. ①Control group: the incision was sew directly after right carotide artery of the rabbit was seeked. ②Balloon dilation group:the proximal of the carotide artery was cuted,the ballon was delivered and distended,after it was drawn repeatly,the incision was closed. ③IA therapy group: operation was the same to the balloon dilation group,then IA was administered in vein.All of them were fed with high cholesterol diet for 4 weeks and the blood samples were collected 1 d before the operation and 1 d,1,2,4 weeks after the operation. The serum IL-6 and M-CSF levels were determined with radioimmunoassay.The pathological changes of injuried artery were observed. Results ①The IL-6 level in balloon dilation group was higher than that in IA therapy group after the operation (P

Objective To investigate the frequency of lesions detection in patients with cerebral infarction (CI) with SPECT/CT. To investigate fluctuation of regional cerebral blood flow (rCBF) and its relationship with clinical symptoms. Methods Sixty-seven CI patients without cerebellar lesion were randomly selected. The rCBF in the regions of interest (ROI) was examined by SPECT/CT, which was collected from the frontal lobe, temporal lobe, parietal lobe, occipital lobe, thalamus, basal ganglia and cerebellum. The rCBF index was calculated. The association between fluctuation of rCBF index and clinical symptoms of patients was explored. Results There were 251 positive regions in all viewing regions , the total positive rate was 31.2%. The left side was 38.1%, while the right side was 24.4% (χ2=17.522,P < 0.01). In normal group, there were no statistical difference of average rCBF between two halves (P > 0.05). However, the average rCBF on the left parietal lobe was lower (P < 0.01). The average rCBF in the abnormal group was lower than that in ipsilateral normal group (P < 0.01). The average rCBF index in the abnormal group was higher (P < 0.01). In normal group , the average rCBF on the frontal lobe and parietal lobe was low , but the average rCBF on the thalamus and basal ganglia was high (P < 0.01). In abnormal group, there were no statistical difference in the average rCBF (P >0.05). rCBF≥0.7 is a clinical sign of abnormal ROI. Conclusion 30% of ROI of CI patients have lesions and the positive rate of the left side was higher. The biological rCBF values of all lobes were different. Therefore, rCBF index could be used to reflect whether the ROI is normal. rCBF≥0.7 could be used as a sign to quantitatively assess abnormal ROI in clinical practice.

Although the mechanism by which migratory trophoblasts reach the spiral arteries is currently obscure, yet the process has been noted to involve the attachment, adhesion and migration of trophoblasts on the blood vessel walls. To test this, micropipette and flow chamber were used to measure quantitatively the adhesion forces and migration of early gestation human trophoblast cells (TCs) cultured on the glass slides coated with type I rat collagen or cultured with human umbilical vein endothelial cells (HUVECs). The results showed that the interdiction of integrin beta1 interaction remarkably reduced the adhesion forces of TCs to type I rat collagen or endothelial cells, and remarkably resisted the displacement of TCs induced by shear stress. By contact between TCs and endothelial cells, the TCs' adhesion force and TCs' resistance to shear stress were significantly enhanced. The results indicated that the contacts of TCs with endothelial cells enhanced the adhesion forces of human TCs, and regulated the migration of human TCs by shear stress.
Adult ; Cell Adhesion ; drug effects ; Cell Movement ; drug effects ; Cells, Cultured ; Coculture Techniques ; Female ; Human Umbilical Vein Endothelial Cells ; cytology ; Humans ; Integrin beta1 ; physiology ; Trophoblasts ; cytology

Objective To establish the microtiter plate radiobinding assay (RBA) of IA-2A and to evaluate its clinical application. Methods The purified ~(35)S - IA-2 was incubated with sera for 24 hours on a 96-well V-shaped bottom plate, and then transferred to the Millipore plate coated with protein A, and counted with liquid scintillation and luminescence counters after washing. The IA-2A levels were detected in 162 patients with type 1 diabetes(T1DM),210 patients with newly diagnosed type 2 diabetes(T2DM) and 224 healthy controls to evaluate clinical application of IA-2A RBA. Results 1. The intra-coefficient of variation (CV) of the assay was 4.1%～10.0%, and the inter CV was 5.7%～12.8%. 2. The results from DASP 2005 showed that the sensitivity and specificity of the assay were 72% and 98%. The results of IA-2A from two methods of RBA and classical radioligand assay(RLA) were significantly correlated (r=0.962,P＜0.001) with a consistency of 96.5%. 3. When compared with the healthy controls, T1DM patients had higher positivity for IA-2A (22.8% vs 0.89%, χ~2=49.9,P＜0.001), but no significant difference was found in T2DM patients(2.4% vs 0.89%, χ~2=1.5,P＞0.05). 4. The consistency rate of IA-2A measurement was 100% between RBA using finger tip blood and RLA using venous blood (r=0.977,P＜0.001). Conclusions The microtiter plate RBA of IA-2A using finger tip blood has high sensitivity, specificity and reproducibility, and possesses a good clinical value.

Objective To investigate the quality control and quality assurance of the SPECT/CT system.Methods The energy peak,energy resolution capacity and the intrinsic uniformity of the device's detector were regularly examined, and the quality control was performed. Results The daily hardware maintain could reduce the rate of system's trouble. The device's energy peak,energy resolution capacity were consistent during half year's observation period. The two detector's intrinsic uniformity were better after calibration than before. [ detector Ⅰ: ( 2.71 ± 0.28 ) vs (2.37±0.11)(t=2.489,P<0. 05);detector Ⅱ:(2.68 ±0.12)vs(2.38 ±0. 19)(t =6.421,P <0.01) ] .Conclusion Regular quality control and maintain could keep the function stabilization,enhance the availability rate of the SPECT/CT system.

Objective To study the optimum combination of orientation parameter of total hip prosthesis and acetabular safe zone on condition that the range of motion for activities of daily living (ADL) is fulfilled.Methods A three-dimensional generic parametric and visually kinematic simulation module of THA was developed.Range of motion ( ROM ) of hip flexion ≥ 110°,internal-rotation ≥30° at 90° flexion,extension ≥30° and external rotation ≥40° were defined as the normal criteria for ADL.ROM of hip flexion ≥ 120°,internal-rotation ≥45° at 90° flexion,extension ≥30° and external rotation ≥40° were as the severe criteria.The ranges of changes in general ratios (GRs) of head-neck,femoral neck antevemion ( FNA ),operative inclination (OI) and anteversion (OA) of acetabulur components were 2.0-2.92,0°-30°,10°-60°,and 0°-70° respectively.Within the limits of the upper two activity criteria,the synchronous OA of acetabulur components was calculated with every 5°change in OI of the cup,and the collodiaphyseal angle ( CDD ) was set as 135°.The safe-zone of combination of acetabulur operative anteversion (OA) and inclination (OI) was defined as the area that fulfilled the two mentioned criteria of ROM without cup-neck impingement.All parameters were analyzed by using SAS 6.12 software.Results The safe zone of acetabdar angle rose with the increase of GRs of head-neck and the safe zone of severe criteria was smaller than that of normal criteria.When the CDD angle was 135°,the sum of average aeetabular OA and acetahular OI plus 0.816 times of the FNA equaled to 84.76° innormal criteria; and the sum of average acetabular OA and acetabular OI plus 0.873 times of the FNA equaled to 92.04° in severe criteria.Conclusions A high GR of head-neck greatly increases the size of safe-zone of acetabular angle.The higher demand of ROM of hip joint requires the smaller safe zone of acetabular angle,as can be corrected by increasing the GR of head-neck.The optimum combination between the sum of average acetabular OA and acetabular OI ( Y) plus FA (X)in the normal criteria and severe criteria can be estimated by using the following formulae:Y1 =-0.816X1 + 84.76 (R2 =0.993 ),Y2 =-0.873X2 + 92.04( R2 =0.999) respectively.

Objective To analyze the clinical risk factors of hemorrhagic transformation (HT) of cardiogenic cerebral embolism and the influence of HT on outcome. Methods The clinical data of 115 inpatients were reviewed from May, 2012 to December, 2015. They were di-vided into HT group (n=58) and non-HT group (n=57). The age, anticoagulant therapy, thrombolytic therapy, infarction diameter, diabetes, coronary heart disease, hyperlipidemia, the National Institutes of Health Stroke Scale (NIHSS) score and HAS-BLED score were compared. The risk factors for HT was screened with the multivariate Logistic regression. NIHSS score and Modified Rankin Scale (mRS) score as hos-pitalization, and one month and three months after stroke were compared. Results There were significant difference in NIHSS score (t=-2.991, P=0.003) and HAS-BLED score (t=-2.499, P=0.014), as well as infarction diameter (χ2=8.355, P=0.004) between HT group and non-HT group. NIHSS score (OR=1.127, P=0.027), HAS-BLED score (OR=1.783, P=0.03) and infarction diameter (OR=4.390, P=0.035) were the risk factors for HT. The incidence of HT was less in low-risk group (HAS-BLED score=0-2) than in high-risk group (HAS-BLED score≥3) (χ2=4.643, P=0.031). The NIHSS score as hospitalization, and one month and three months after stroke were all more in HT group than in non-HT group (t>2.387, P<0.05). The mRS score was more in HT group as hospitalization (t=-2.262, P=0.026), but not significant one and three months later (t<1.468, P>0.05). Conclusion HT tends to happen in the patients of cerebral embolism patients after atrial fibril-lation with severe neural function defect, large infarction diameter and high HAS-BLED score. The neural function is poor in those with HT.

Objective To investigate the relationship between the trauma severity and the usage of antibacterial drugs and to provide reference for standard protocol of proper antibiotic use in wound care.Methods ICD-10 and AIS were used to set up the relationship and to analyze the use of antibiotics in patients with different trauma score.Results 25 035 trauma patients were enrolled in this study.Those patients were divided into five groups according to the AIS score with least severe as group 1 to most severe as group 5.The patient percentage in group 1 to 5 was 21.92％,67.73％,8.86％,0.97％ and 0.52％ respectively.The five most frequently used antibiotic classes are second generation cephalosporins,third generation cephalosporins,first generation cephalosporins,fluoroquinolones and penicillin/beta lactamase inhibitor combination, accounted for 29.69％,22.57％,20.33％,4.66％ and 4.47％ of total DDDs of antibacterial drugs.Individually, the top 10 antibiotics are cefuroxime (12.21％), cefazolin (8.31％), ceftriaxone (7.74％), cefathiamidine (7.34％), cefotiam (4.87％), ceftazidime (3.68％), amoxicillin/clavulanic acid (3.63％), levofloxacin (3.59％), cefoxitin (3.56％), flucloxacillin (3.52％);gentamicin (2.27％), ornidazole (2.00％) and cefoperazone/tazobactam (1.44％) were used most in their categories respectively.The variety and quantity of antibacterial drugs used for different trauma patients were different.Conclusion The trauma score based on ICD-AIS can reflect the severity of trauma.The use of antibiotics in patients with different trauma score can provide reference for the clinical applications of antibiotics in wound care.

In order to complete the information statistics and submission work of designated hospitals with high quality, a hospital uses the agile business intelligence system to carry out information construction, and realize the statistics, analysis and auxiliary management decision-making of COVID-19 patients′ admission data. Based on the low-load and full-volume data capture mechanism, relevant basic data in the background of the hospital information system was extracted, and the admission information visualization and early warning analysis system was built by establishing data relations, data modeling and other methods. The hospital completed 634 batches of data statistics and reporting tasks of 2 943 patients in a timely and efficient manner, and assisted clinical diagnosis and treatment improvement and hospital leadership decision-making by using data analysis, early warning feedback and other functions.

Objective To investigate the effect of tantalum particles on the proliferation of osteoblasts and explore its mechanism. Methods Mouse osteoblasts MC3T3-E1 were co-cultured with micro-tantalum particles (micro-Ta)and Nano-tantalum particles(nano-Ta)of different concentrations respectively. CCK-8 assay was used to measure the cell viability at 6,12,24 and 48 h. According to the result of CCK-8 the group with the most prolif-erative effect was screened and the level of autophagy was detected by using Western blot,laser confocal microsco-py and transmission electron microscopy(SEM). Finally,to verify the role of autophagy in pro-proliferation effect of nano-Ta,the OD value was measured repeatedly in combination with autophagy inducer and inhibitor. Results 100 ng/mL micro-Ta treated groups had obvious proliferative effect but autophagy was not detected. 20 μg/mL nano-Ta treated groups had obvious proliferative effect and autophagy was detected. CCK-8 assay revealed that autophagy inhibitor can significantly inhibited cell proliferation of nano-Ta treated group. Conclusion Nano-Ta could pro-mote cell proliferation by inducing autophagy,and micro-Ta may promote osteoblast proliferation through other non-autophagy pathway.