Objective To investigate the clinical significance of serum chemokine and hs-CRP levels in patients with type 2 diabetes mellitus with asymptomatic subclinical atherosclerosis.Methods The clinicpathological and follow-up data of 55 patients with Type 2 diabetic from 2012.1 to 2015.12 were collected and reviewed.At the same time,55 patients with non type 2 diabetes were taken as control.Determination of FPG,HbA1c,HDL-C,TC,TG,LDL-C,INS and other indicators by automatic biochemical analyzer,the application of color Doppler ultrasound equipment measurement C-IMT.Correlation using Pearson correlation analysis,risk factor analysis using multiple linear stepwise regression analysis.Results Compared with the control group,the two groups in BMI,WHR,systolic blood pressure,ankle brachial index,FPG,HbA1c,HDL-C,hsCRP,C-IMT,HOMA2-IR and serum chemokines were significantly different,with statistical significance (t =-6.31 ～5.79,P≤0.01 ～ 0.03).In 110 cases of experimental group and control group,the levels of serum chemokines were positively correlated with WHR,HOMA2-IR,C-IMT and hs-CRP (r=0.24～0.29,P=0.01～0.04).C-IMT and age,WHR,systolic blood pressure,diastolic blood pressure,FPG,HbA1c,diabetes duration,hs-CRP was positively correlated (r=0.15 ～0.68,P≤0.01～0.0.04),and the ankle brachial index was negatively correlated (r=-0.32～0.29,P≤0.01).Hs-CRP was positively correlated with HbA1c,HOMA2 IR,serum chemokine,C-IMT (r=0.25～0.32,P≤0.01～0.04),and was negatively correlated with TC and HDL-C (r=-0.27～-0.25,P all 0.02).Cox proportional hazard regression model for multivariate analysis showed that high serum chemokines,hs-CRP and HbA1c were the risk factors of C-IMT (β=0.026～0.658,SE=0.015～0.033,t=2.532～3.421,P≤0.01～0.04).Conclusion High serum levels of chemokines and hs-CRP are the risk factors of C-IMT,and it has important clinical significance for the diagnosis of asymptomatic subclinical atherosclerosis in patients with type 2 diabetes mellitus.

Objective To study the value of time intensity curve of contrast enhanced ultrasound in the discrimination of benign and malignant soft tissue tumors. Methods Thirty-seven cases of soft tissue tumors were carried out contrast-enhanced ultrasound examination. The region of interest in the dynamic images were chosen to carry out Gamma-Variate curve fitting through Q-LAB software and made a quantitative analysis. Then they were compared with pathological diagnosis to analyze the ultrasound imaging performance of benign and malignant tumors and their characteristics of micro-irrigation. Results Thirty-seven cases of soft tissue tumors were pathologically diagnosed 21 cases of benign and malignant in 16 cases. The perfusion of benign tumors were mainly uniformity (19/21) or potentialization (2/21). The perfusion of malignant tumors were mainly uniformity (10/16) or nonuniformity (6/16). There were no significant differences in time to peak(TTP) and arrival time of contrast agent(AT) between benign and malignant tumors( P ＞0.05). The upslope rate(A) and the derived peak intensity(DPI) in benign group were significantly less than malignant group ( P ＜0.05). Conclusions Time-intensity curve analysis of contrast-enhanced ultrasound showed that benign and malignant soft tissue tumors were different in perfusion,and it will be of a certain value for the clinical differential diagnosis.

AIM　To detect chemical components of the essential oil of Schisandra chinensis(Turcz.)Baill.. METHODS　The essential oil was analyzed with GC/MS, heuristic evolving latent projections(HELP) resolution and overall volume integration method. RESULTS　HELP method along with the data from GC/MS can be used to conduct the peak purity examination and resolution of overlapping peaks to obtain pure chromatogram and MS spectrum of each component. Fifty six components were separated and 49 of them were qualitatively and quantitatively analyzed. All the components represent about 98.27% of the total content. CONCLUSION　The resolved pure chromatogram and MS spectrum can greatly enhance the reliability of similar searches in the commercial MS database and thus contribute to the accuracy of the qualitative and quantitative analysis of the essential oil.

Objective To study the relationship between the cerebral artery stenosis and the carotid artery elasticity in the ischemia stroke patients by echo-tracking technique.Methods Ninety-two ischemia stroke patients were divided into both the mild cerebral arteries stenosis and moderate-severe cerebral arteries stenosis groups.CT angiography was performed to evaluate the stenosis of cerebral artery.The changes of the carotid diameter during cardiac cycles were obtained by echo-tracking technique and the quantitative parameters of pressure-strain elastic modulus (Ep),stiffness (β) and arterial compliance (AC) were calculated automatically. Results①There were significant differences (P＜0.05) between the ischemia stroke patient group and the normal adults group in β，Ep and AC.② There were significant differences (P＜0.05) between the mild cerebral arteries stenosis groups and the moderate-severe cerebral arteries stenosis groups in β and Ep.AC was lower in patients with the mild cerebral arteries stenosis groups than that in the moderate-severe cerebral arteries stenosis groups.Conclusions The carotid artery elasticity in ischemia stroke patients were significantly different from normal adults.In the ischemia stroke patients,the stiffer the carotid artery was,the higher the likelihood of moderate-severe cerebral stenosis was.

Objective To explore the clinical effect of dopamine,phentolamine,recombinant interferon α combined with nasal continuous positive airway pressure(CPAP) ventilation in treating severe infantile bronchiolitis.Methods Ninety-five cases of infantile severe bronchiolitis were divided into the observation group(55 cases) and control group (40 cases).The control group was given the combined treatment scheme of dopamine,phentolamine and recombinant interferon α,while on this basis the observation group was added with NCPAP.The curative effects were compared between the two groups.Results The total effective rate in the observation group was significantly higher than that in the control group(P<0.05);the temperature recovery time,wheezing disappearance time,cough stopping time,lung wheezing sound disappearance time and hospitalization time in the observation group were significantly lower than those in the control group(P<0.05);the breathing rate,heart rate and PaCO2 level after treatment in the two groups were significantly lower than those before treatment,the levels of PaO2,PaO2/FiO2 and pH were significantly higher than those before treatment in the same group,the differences were statistically significant(P<0.05);the breathing rate,heart rate and PaCO2 level after treatment in the observation group were significantly lower than those in the control group(P<0.05);the levels of PaO2,PaO2/FiO2 and PH after treatment in the observation group were significantly higher than those in the control group(P<0.05);the levels of IL-8,sVCAM-1and LTE4 after treatment in the two groups were significantly lower than those before treatment(P<0.05);there was no statistically significant difference in the levels of serum IL-8,sVCAM-1 and urine LTE4 between the two groups(P>0.05);the recurrence rate and death rate in the observation group were significantly lower than those in the control group with statistical difference(P<0.05);the occurrence rate of adverse situation during treatment period had no statistical difference between the two groups(P>0.05).Conclusion Dopamine,phentolamine,recombinant interferon α combined with NCPAP has obviously clinical effect for treating infantile severe bronchiolitis,can effectively improve the blood gas analytical indexes,reduces the signs and symptoms relief time,reduces the rates of relapse and death,and has higher clinical application value.

Objective This study examined the value of soluble triggering receptor expressed on myeloid cells-1 (sTREM-1)in serum and exhaled ventilator condensate (EVC)in early diagnosis and prognosis of ventilator-associated pneumonia (VAP). Methods A total of 37 adult patients undergoing mechanical ventilation were evaluated after treatment,including 24 patients with infection,13 without infection.Of the 24 patients with infection,10 patients were assigned to ineffective subgroup and 14 to effective subgroup.Levels of sTREM-1 in serum and EVC were measured on days 1,3,5,and 7 for all patients.sTREM-1 in serum and EVC were determined in patients by double antibody sandwich enzyme-linked immunosorbant assay (DAS-ELISA).The early diagnostic and prognostic value was assessed by receiver operating characteristic (ROC)curve analysis.Re-sults On Day 1,the sTREM-1 levels in serum and EVC did not show significant difference between the three groups (P>0.05).On Day 3 and Day 5,the level of sTREM-1 in the infection group was higher than that in the non-infection group (P <0.01).On Day 7,the sTREM-1 levels of serum and EVC in ineffective subgroup were higher than those in the effective subgroup and non-infection group (P <0.01). There were no difference between the non-infection group and effective subgroup (P >0.05).For ROC analysis,area under the curve (AUC)of serum sTREM-1 was 0.897,and AUC of EVC sTREM-1 was 0.909 on Day 3.When the cut-off value of EVC sTREM-1 was set at 4.70 ng/mL on Day 3,the sensitivity was 85.8%,specificity was 92.3%.Conclusions The results suggest that the levels of sTREM-1 in serum and EVC are conducive to the early diagnosis of VAP.The levels of sTREM-1 in serum and EVC on Day 7 are helpful for estimating the prognosis.EVC sample is easier to collect than serum.

Objective To evaluate the value of virtual touch quantization (VTQ) imaging in diagnosis of IgA nephropathy. Methods The clinical data of 85 patients with IgA nephropathy were analyzed, who were treated in Capital Medical University Affiliate Beijing Chaoyang Hospital from December 2013 to July 2014. The patients who was with critical condition, unable to cooperate and with other pathological types were excluded. Finally 108 kidneys of IgA nephropathy with mesangial cell hyperplasia in 54 cases were included into the study. Meanwhile 108 kidneys in 54 volunteers who took the health physical examination in our hospital were taken as healthy controls. VTQ was performed in middle part of kidney and the measurements of shear wave velocity (SWV) was recorded. The mean SWV of renal parenchyma and collecting system was compared in different groups. Results The mean SWV measurement of renal parenchyma and collecting system in control group were (2.13±0.13) m/s, (1.15±0.02) m/s;the results in IgA nephropathy group were (3.07±0.62) m/s, (1.12±0.29) m/s. The mean SWV of renal collecting system was lower than that of renal parenchyma (t=-14.481, P<0.001). The mean SWV of renal parenchyma and collecting system in IgA Nephropathy group was higher than that in control group (t=-54.01, P<0.001). The renal parenchyma VTQ value positively correlated with the degree of renal insufficiency for patients with chronic kidney disease (CKD) (F=798.70, P<0.001). The interlobular arterial resistance index (RI) increased gradually with CKD stage, but no statistical differences were found. Conclusion In terms of early diagnosis and clinical staging, VTQ technology has some diagnostic value in evaluation of renal parenchymal damage for patients with IgA nephropathy.

Objective To establish an auto-control system for high-throughput and multi-channel DNA synthesis which can simultaneously and quickly synthesize up to 96 different oligonucleotides in a 96-well microtiter format.Methods The PLC and its extended modules is used as the main-control unit, which executes the DNA automatic synthesis process according to the synthesis sequences and steps set by the user,and the manual injecting reagent etc.And the configuration software and VC6.0 were used for programming the man-machine interface sofeware to set synthesis parameters, position calibration,flux calibration data etc, and communicated with PLC.Results The synthesis application of about 150 000 DNA chains has proved that the synthesis cycle time for 96 couplings was 4 min,the average coupling efficiency was 99%across the entire 96-well plate,the monomer reagent usage was reduced by 50 percent,and the synthesis configuration was more flexible.Conclusion A reliable and simple auto-control system is provided for parallel synthesis of 96-channel oligonucleotide chains,which can meet the demands of high-throughput and multi-channel DNA synthesis.

Objective To investigate the safety and feasibility of endovascular stent angioplasty in treating symptomatic stenosis of middle cerebral artery.Methods Endovascular angioplasty with coronary stents was performed in 27 patients with symptomatic stenosis of middle cerebral artery.The clinical results were reviewed and analyzed.Results Of the total 27 patients,successful placement of the coronary stents Was achieved in 24.Angiography immediately after the procedure showed that the stenotic degree of the diseased artery was markedly decreased from preoperative (80±19)%to postoperative (8±4)%,the improvement was very obvious.Percutaneous transcatheter angioplasty had to be employed in two cases because of the failure of stent placement.A mean follow-up period of 18 months was carried out.During the following up period no transient cerebral ischemia attack occurred in 25 patients and no newly-developed cerebral infarction in region fed by the responsible vessels occurred either.Re=irrigation cerebral hemorrhage was seen in one patient,which occurred three hours after the placement of the stent.In one case the placed stent fell off and immigrated into the siphon of internal carotid artery,and the displaced stent Was took out later with a catching apparatus.In another case re-stenosis occurred six months after the stenting.Conclusion Percutaneous endovaacular stent angioplasty is a safe and effective treatment for symptomatic stenosis of middle cerebral artery,although its long-term results need to be further evaluated.

Objective To study the characteristics of patients with low body mass index (BMI) chronic obstructive pulmonary disease(COPD). Methods A total of 38 clinically stable patients with moderate-to-severe COPD were enrolled. They were divided into two groups: underweight (UW) group (n=16,BMI<20);normal weight(NW) group(n=22, 20≤BMI<26). Body height and weight, smoking indexs, and six minutes walk distance (6MWD) were assayed. The British Medical Research Council (MRC) dyspnea scale was used to assess the degree of dyspnea. St. George's Respiratory Questionnaire (SGRQ) and Short Form 36 item Questionnaire (SF-36) were used for health-related quality of life (HRQoL) evaluation. The serum concentrations of leptin and ghrelin were detected by enzyme-linked immunosorbent assay (ELISA). Results Compared with the NW group, the inspiratory eapacity(IC), forced expiratory volume in one second (FEV), vital capacity (VC) ,most ventilate volume (MVV) and peak expiratory flow(PEF) were lower(P<0. 05) in the UW group. Residual volume-to-total lung capacity ratio (RV/TLC), smoking indexs and MRC score were higher (all P<0. 05) and 6MWD was significantly lower (P<0. 05) in the UW group than in NW group. Activity scores,impact scores and total scores of SGRQ showed significant deterioration in the UW group (P<0. 05). SF-36 also showed significantly worse scores for the parameters of the emotional and social functioning (P < 0. 05 ). Serum leptin was significantly lower ( P< 0.01 ) and ghrelin was higher in UW group than in NW group (P<0. 05). Stepwise multiple regression analyse showed that lC,mental health(MH) and physical function (PF) of SF-36, leptin,6MWD and smoking indexs were independently correlated with BMI. Conchtsions The pulmonary function, nutritional status, PF and life quality of COPD patients with low BMI were more deteriorative. The most significant influencing factor for BMI in COPD patients was IC. M H,exercise capacity,leptin level and smoking indexs were independently correlated with BMI in COPD patients. It is important to retrieve low BMI in the management of COPD patients.