Objective To evaluate the value of MSCT in differentiate cystic lesions in different cervical region. Methods Forty cases with cyst lesions in the neck which was confirmed by pathology were collected in our study. The following diseases were excluded: cystic lesions from thyroid gland and thymus or bronchus, cystic changes of solid lesions ( necrotic lymph node) and cystic or solid lesions in the parotid gland. All patients underwent MSCT scan on GE Lightspeed 16. The parameters were following: 120 kV,260 mA, thickness 5 mm, pitch 1. 375. The delay time for contrast enhanced CT was 25 seconds for arterial phase and 60 seconds for vein phase. Results Lesions were analyzed in 4 different cervical regions including parotid gland, midline, lateral cervix and posterior cervix. Among the lesions in parotid area,2 were first brachial cyst and the other 2 were epidermoid cyst. First brachial cyst occurred intraparotid gland and epidermoid cyst occurred intraparotid or extraparotid gland. Among the lesions in midline area, 17 cases were thyroglossal cysts,81.0% were in the level hyoid bone, 12 cases of thyroglossal cysts protruded at the preepiglottic space or oral base. Another kind of lesions in midline included 3 cases of epiglottic cysts and 1 epidermoid cyst in the lower level of the neck which involved infrasternal level. The 12 cases of second brachial cysts occurred in the lateral neck. Ten cases were in the left side. Type Ⅱ was the most common type and account for 5 cases among all of second brachial cysts. Type Ⅰ and type Ⅱ were running up,accounting 3 cases respectively. Type Ⅳ account for 1 case. Two cases with lymphangioma and 1 case with third brachial cyst located at the posterior neck. Conclusion According to the location and typical imaging appearance, MSCT can do the differentiation of different cystic lesions in the different area of neck.

ObjectiveTo investigate the application of the ratio of early diastolic peak velocity of mitral valve(E) and early diastolic peak velocity of mitral annular(Ea) on evaluating left ventricuiar diastolic function in patients with chronic heart failure.MethodsLeft atrial diameter(LAD),left ventricular end-diastolic diameter (LVEDd),interventricular septal thickness (IVST),left ventricular ejection fraction (LVEF),E and late diastolic peak speed of mitral valve (A) of 30 patients with diastolic heart failure(DHF,DHF group),30 patients with systolic heart failure(SHF,SHF group) and 30 healthy persons (control group) were detected by conventional echocardiography.E/A ratio and E-wave deceleration time (DT) were calculated.Early diastolic peak velocity of longitudinal septal and left ventricular lateral part of mitral annulus (Esep,Elat) were measured by tissue Doppler imaging (TDI).Ea and E/Ea ratio were calculated as well as the relevant analysis was made.Results ( 1 ) LAD and IVST in DHF group were significantly higher than those in control group [(44.90±8.31) mm vs.(30.87±3.48) mm,(9.43±2.18) nn vs.(8.17 ± 1.12)mm,P＜0.05].LVEDd in SHF group was obviously higher than that in control group and DHF group [(66.30 ± 10.21) mm vs.(44.77 ± 4.17) mm,(48.60 ± 8.85) mm,P＜0.05],and LVEF and DT were significantly lower than those in control group and DHF group(P ＜ 0.05 ).(2) Esep,Elat and Ea in DHF and SHF group were significantly lower than those in control group( P ＜ 0.01 ),and E/Esep,E/Elat and E/Ea ratios were obviously higher than those in control group (P ＜ 0.01 ).( 3 ) The level of B type natriuretic peptide (BNP) in DHF and SHF group was significantly higher than that in control group [(477.73 ± 722.76),(978.60 ± 825.04) ng/L vs.(29.23 ± 17.84) ng/L,P ＜ 0.05 ].The level of BNP in SHF group was significantly higher than that in DHF group (P＜0.05 ).(4) Multivariate linear regression analysis showed that NYHA classification and BNP were correlated with E/Ea ratio (P ＜ 0.05).(5) The area under curve (AUC) of E/Ea in diagnosing chronic heart failure was 0.984 (95％ CI:0.000-1.000).AUC of E/Ea in identifying DHF and SHF was 0.857(95％ CI:0.773-0.940).The sensitivity and specificity of E/Ea were much higher than those of E/A.Conclusions Chronic left ventricular systolic insufficiency is commonly combined with different-degree diastolic dysfunction.The evaluation of left ventricular diastolic function can be more simple and accurate combined with pulse wave Doppler and TDI.

This study analysed the tissue specific expression of critical genes involved in chlorogenic acid and luteolin biosynthesis, for exploiting the molecular mechanism of components biosynthesis in Lonicera confusa. Expression of PAL, 4CL, C4H, CHS, CHI, FNS and HQT gene families of chlorogenic acid and luteolin biosynthesis-related genes in buds and leaves of L. confusa were analyed by Real-time PCR. Expressions of PAL1, C4H1, 4CL1, CHS1, CHI3 and HQT2 in buds were lower than that in leaves, and expressions of PAL3, 4CL2, CHI2 and FNS2 in buds were higher than that in leaves. The results indicated that that PAL3 and 4CL2 may be associated with accumulation of chlorogenic acid, and the expression patterns of PAL1, CHS1, CHI3 and HQT2 in buds and leaves of L. confusa were different with L. japonica. This study provided some theoretical basis for the further research on genetic mechanism of active components differences in L. confusa and L. japonica.
Biosynthetic Pathways ; Chlorogenic Acid ; metabolism ; Gene Expression Regulation, Plant ; Lonicera ; genetics ; metabolism ; Luteolin ; biosynthesis ; Multigene Family ; Plant Proteins ; genetics ; metabolism

A test was conducted to examine the effect of several electron donors such as glucose, sodium acetate, Fe0, Fe0+glucose and Fe0+sodium acetate on reductive dechlorination of 2,4-dichlorophenol (2,4-DCP) through inoculating the unacclimated anaerobic mixed bacteria. The optimum condition and sus-tainability of Fe0 as electron donor was also been discussed. The results showed that, Fe0+glucose enhanced the dechlorination of contaminant effectively compared to glucose. Sodium acetate, Fe0 and Fe0+sodium acetate were all effective electron donors and Fe0 was the optimum, the optimum initial pH was 8.0 and quantity of added Fe0 was 2.0 g/L. 4-CP was the mainly intermediate product for 2,4-DCP dechlorination. Fe0 could support the electron for reductive dechlorination of 2,4-DCP continuously. In contrast, when so-dium acetate as electron donor, the effect of dechlorination was inferior to Fe0 with the consumption of sodium acetate.

Objective:To observe the therapeutic effect of acupuncture-moxibustion at different intervals on persistent allergic rhinitis. Methods: A total of 90 patients conforming to the inclusion criteria were randomized into three groups named A, B and C by randomized block method. Patients in all three groups received the same treatment of acupuncture and herbal cake-partitioned moxibustion at the same acupoints, while the treatment frequency was different. Patients in group A received the treatment once a week, group B twice a week and group C three times a week, and all the treatment lasted for 4 weeks. The total nasal symptom score (TNSS), total ocular symptom score (TOSS) and Sino-nasal outcome test-20 (SNOT-20) were evaluated before and after treatment. The self-rating score of symptoms was evaluated during treatment and 2 weeks after treatment. Results: The total effective rate was 80.0% in group A, 93.3% in group B, and 100.0% in group C. The total effective rate in group A was statistically different from that in group B and group C (both P＜0.05), but there was no significant inter-group difference in total effective rate between group B and group C (P＞0.05). After treatment, scores of TNSS, TOSS and SNOT-20 in all three groups dropped significantly, and statistically different from those before treatment (all P＜0.05); between-group comparison showed group B and group C decreased more obvious than group A (all P＜0.05). In self-rating score of symptoms, there were no inter-group statistically significant differences in the first 3-week treatment (all P＞0.05); after 4-week treatment, the score in group A was higher than that in group B and group C, and showed statistical significant (both P＜0.05); at 2 weeks after treatment, the score in group A was higher than that in group B and group C based on an everyday record, showing statistical significance (both P＜0.05). At the 11th day after treatment, the score in group B was higher than that in group C (P＜0.05). There were no significant differences between group B and group C at other time points (all P＞0.05). Conclusion: All three protocols are effective for allergic rhinitis. With the increase of treatment frequency, the therapeutic efficacy with a treatment frequency of twice a week and three times a week is superior to that of once a week. Frequency of three times a week has a better long-term effect than once and twice a week, together with the least fluctuation of symptoms.

A descriptive study to investigate the situation of cross-cultural adaptation and health status among medical international students was carried out using cluster sampling method and self-designed questionnaire in Dalian Medical University.148 international students come from 24 countries.There are 5 religions belief among these students.Islam,Catholic,Hindu,Buddhism and Sikhism.The main obstacles of cross-cultural adaptation are language,accommodation and diet.Economic status and stress of interpersonal relationship are also the main causes affecting the physical and mental health of medical international students.

This paper discussed the application of designing experiments from scientific research in Micro-biology courses and its effects on the teachers and students. The problems of the application of designing experiments in Microbiology courses were analyzed. The practice of the teaching reform showed that it give great advantages for the undergraduates with the enhancement of their ability on theory application and sci-entific innovation. This teaching reform could be widely popularized.

BACKGROUND:Bone marrow mesenchymal stem cells are rare in vivo. It is important to purify, proliferate and differentiate bone marrow mesenchymal stem cells in vitro for further research. OBJECTIVE:To evaluate the biological characteristics, phenotype and multiple differentiation potential cultivation of bone marrow mesenchymal stem cells that are isolated, cultured and purified using the whole bone marrow adherence method. METHODS:Bone marrow mesenchymal stem cells were isolated, purified and cultured by the whole bone marrow adherence method. Morphological observation and flow cytometry determination of cellsurface markers were performed. Osteogenic and adipogenic differentiation of bone marrow mesenchymal stem cells was induced. RESULTS AND CONCLUSION:We successful y purified and proliferated bone marrow mesenchymal stem cells with high cellviability and differentiation ability. Fibroblast-like cells were harvested, expressing CD29 and CD90, but not CD45. Fol owing osteogenic and adipogenic induction, cells were positive for oil red O staining and alizarin red staining. The whole bone marrow adherence method is easy to operate, has little impact on cellviability, and can be used to harvest high-purification bone marrow mesenchymal stem cells with high cellviability and differentiation ability.

Objective To study the scanning technique of 16-detector multic-slice spiral CT (MSCT) for combined pulmonary artery and deep vein of lower limb in pulmonary thromboembolism (PE) patients.Methods Forty suspected pulmonary thromboembolism patients were performed both pulmonary artery angiography (CTA) and indirect deep vein venography (CTV) on 16-detector MSCT. The parameters of the latter as following :total contrast volume 120-150 ml, injection rate 4.0-4.5 ml/s (from antecubital vein), delay time 4.0 for CTA 20-23 s, CTV 120-180 s, collimation for CTA 1.25 mm and 0.625 mm, CTV 2.5 mm, scan range of CTV: from popliteal vein to the level of bilateral renal vein into the inferior vena cava. Postprocessing include MPR, MIP, and VR. The test was used to analyzed the images.Results Twenty five patients had both pulmonary thromboembolism(PE) and deep vein thromboembolism (DVT), 8 patients had only DVT, 2 had only PE, and 5 had neither. There was no difference between different collimation in depicting thrombus. The CT value number of enhanced pulmonary artery and lower deep vein was obviously higher than the thrombus. The value of MPR, MIP, VR for PE was 100%, 100%, and 65%, The value of MPR,MIP,VR for DVT is 100%, 60%, and 50%.Conclusion The technique of combined pulmonary CTA and deep vein CTV of 16-detector MSCT will provide a new modality for pulmonary thromboembolism patients.

Objective To explore the diagnosis value of 320-row detector dynamic volume CT in complex congenital heart disease (CCHD)with double outlet right ventricle(DORV).Methods Seventy-eight patients who proveed DORV by surgery in Xinqiao Hospital of Third Military Medical University were reviewed.Thirty-six patients of group A performed 320-row detector dynamic volume CT by using segmental analysis,and were compared with the group B(42 Cases) performed conventional 64-slice CT respectively.Results In 36 cases of DORV confirmed by surgery in group A,MSCT provided accurate qualitative diagnosis in all cases.The accuracy rate of diagnosis of the group B was 90.7％.There was no significant differences compared with the group A (P＞0.05).There were ventricular septal defect in all the 78 cases,pulmonary stenosis in 56 cases,atrial septal defect in 34 cases,pulmonary hypertension in 21 cases,patent ductus arteriosus in 16 cases,coarctation of aorta in 9 cases.Conclusion The 320-row detector dynamic volume CT has important diagnostic value for DORV of the anatomical diagnosis.