Through the Introduction of the visualization technology based on VREL and its application in ultrasound teaching,the teaching means has been changed,the teaching content enriched and the contact between basic and clinic knowledge enhanced,which indicates that the visualization technology exerts an important role in ultrasound teaching.

Objective To assess clinical efficacy and safety of linezolid in treating postoperative intracranial infec-tion after neurosurgery operation,and provide clinical basis for the treatment of postoperative intracranial infection. Methods From January 2011 to December 2012,clinical data of 51 neurosurgery patients receiving linezolid for trea-ting postoperative intracranial infection were collected,changes in symptoms,temperature,cerebrospinal fluid (CSF)bacterial culture,as well as white blood cell (WBC)count,protein and glucose in CSF before and after therapy were compared,clinical efficacy and safety of linezolid in the treatment of postoperative intracranial infection were assessed based on the diagnostic criteria for intracranial infection.Results After linezolid treatment,30 cases of postoperative intracranial infection were cured,and linezolid was effective in 1 2 cases,improved in 5 cases,and ineffective in 4 cases,total effective rate was 92.16%.Of 47 cases with effective therapy,the mean therapy day were 12.5 d (2-27 d),11 of whom isolated gram-positive bacteria from CSF before therapy,and CSF culture were all negative after linezolid therapy.Conclusion Linezolid is effective for treating intracranial infection caused by Staphylococci,Enterococci and other gram-positive bacteria which failed to response to vancomycin therapy.

Objective: To observe the inlfuence of simvastatin combining ezetimibe on blood levels of glucose and lipids in patients of acute coronary syndrome (ACS) with impaired glucose tolerance (IGT).
Methods: A total of 316 patients with ACS and IGT were randomly divided into 2 groups: Treatment group, the patients received simvastatin 20 mg/day with ezetimibe 10 mg/day,n=160 and Control group, the patients received simvastatin 20 mg/day,n=156. All patients were treated for 24 months. Blood levels of total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) were observed at 6, 12 and 24 months of medication; fasting blood glucose (FBG), 2 hour postprandial blood glucose (2hPG), glycosylated hemoglobin (HbA1c) and the number of patients with new onset diabetes were examined at 6 days and 12, 24 months of medication.
Results:①In Treatment group, at 6 months of medication, blood levels of TC (mmol/L) and LDL-C (mmol/L) were (3.5 ± 0.5) and (2.1 ± 0.4) which were both lower than baseline levels (5.2±1.2) and (3.5±0.5),P<0.05; at 12 and 24 months, TC and LDL-C were (3.1 ± 1.0), (1.8 ± 0.6) and (3.0 ± 0.6), (1.8 ± 0.5), TC and LDL-C were consistently decreased, all P<0.05. In Control group, at 6 months of medication, TC and LDL-C were (4.0 ± 0.5) and (2.4 ± 0.5) which were both lower than baseline levels (5.3 ± 0.8) and (3.1 ± 0.4),P<0.05; at 12 and 24 months, TC and LDL-C were (3.8 ± 0.6), (2.3 ± 0.6) and (3.7 ± 0.5), (2.1 ± 0.7), allP<0.05. TC and LDL-C levels in Treatment group were lower than Control group at 6, 12 and 24 months of medication, allP<0.05.②In Treatment group, FBG (mmol/L) levels at 12 and 24 months were similar to 6 days,P>0.05; HbA1c at 12 and 24 months were similar to baseline,P>0.05; 2hPG (mmol/L) level at 24 months was higher than 6 days (9.5 ± 1.1) vs (8.7 ± 1.0),P<0.05; there were 26 patients with new onset diabetes at 24 months after medication. In Control group, 2hPG level at 24 months was higher than 6 days (9.6 ± 0.8) vs (8.7±0.7); there were 25 patients with new onset diabetes at 24 months after medication. The levels of FBG, 2hPG, HbA1c and the number of patients with new onset diabetes were similar between 2 groups, allP>0.05.
Conclusion: Ezetimibe combining simvastatin may better reduce blood lipids, while it had no real effect on blood glucose metabolism in patients with ACS and IGT.

BACKGROUND:Recent studies have found that bone marrow mesenchymal stem cells play an important role in the development of multiple myeloma, especial y for angiogenesis, but whether the pro-angiogenesis ability of bone marrow mesenchymal stem cells in multiple myeloma in active and remissive state is different is yet unclear. OBJECTIVE:To investigate the difference in the pro-angiogenesis ability of bone marrow mesenchymal stem cells in multiple myeloma in active and remissive state. METHODS:Bone marrow samples were extracted from 13 patients with multiple myeloma before treatment and after four therapeutic cycles to isolate bone marrow mesenchymal stem cells. ELISA assay was used to detect levels of vascular endothelial growth factor, hepatocyte growth factor and basic fibroblast growth factor in the supernatant of bone marrow mesenchymal stem cells. The proliferative ability and movement of human umbilical vein endothelial cells cultured in the supernatant of bone marrow mesenchymal stem cells were detected by MTT assay and Transwel assay, respectively. The pro-angiogenesis ability of bone marrow mesenchymal stem cells was measured by Matrigel in vitro. RESULTS AND CONCLUSION:The levels of vascular endothelial growth factor, hepatocyte growth factor and basic fibroblast growth factor in the cellsupernatant were significantly higher in active myeloma than those in remissive myeloma (P<0.05). The supernatant of bone marrow mesenchymal stem cells of active myeloma more significantly promoted the proliferation, migration and blood vessel formation of human umbilical vein endothelial cells than that of remissive myeloma in a dose-dependent manner (P<0.05). These findings indicate that bone marrow mesenchymal stem cells from active myeloma have stronger pro-angiogenesis ability than those from remissive myeloma.

Objective To purify and identif y Platanus acerifoli wild pollen. Methods We carried out intracutaneous test with Platanus pollen extract in 30 patients with allergic as thma who visited our hospital from March to May 2003. Seven subjects who had bee n diagnosed as having Platanus pollen-induced asthma were enrolled. Platanus po llen proteins were separated by gel filtration with Sephadex-G-100. To charact erize allergenic components, Platanus pollen extract was analyzed by means of so dium dodecylsulfate-polyacrylamide gel electrophoresis followed by immunoblotti ng. Results To purity the pollen we separated Platanus poll en extract in a first purification step by using gel filtration with Sephadex G -100. Two elution peaks were observed. Twelve percent SDS-PAGE analysis showed more than 10 protein bands whose molecular mass (Mr) ranged from 16 ku to 71 ku. Six bands abundant with protein at 71, 50, 35, 39, 22 and 16 ku were observed. On SDS-PAGE, the proteins of the first peak whose Mr we re 71, 50, 35, 39, and 22 ku and that of the second peak was 16 ku. SDS-PAGE and IgG-immunoblotting analysis with seven sera showed 4 IgG-binding component s whose Mr was 50, 39, 22 and 16 ku. The protein bands whose Mr was 50 ku and 22 ku had the highest binding capacity. Conclusion The strongest activity exists in the first peak which can be the major sensiti zing components and there is mild allergic activity in the second peak which is the minor sensitizing components.

Objective To investigate the therapeutic effects and adverse drug reactions of different doses of rosuvastatin in patients with acute ST segment elevation myocardial infarction (STEMI). Methods A total of 115 patients with STEMI were collected from Department of Cardiology, the Second Hospital of Tianjin Medical University. According to different oral doses of rosuvastatin, patients were divided into two groups including 5 mg/d rosuvastatin treatment group (low-dose group, n=44) and 10 mg/d Rosuvastatin treatment group (moderate-dose group, n=71). Patients of two groups were treated with Rosuvastatin at least 1 month after discharge. Data of total cholesterol (TC), triglycerides (TG), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were analyzed and compared before and after treatment between two groups. The major cardiovascular adverse events (MACE) and adverse reactions were recorded in two groups of patients. Results There were no significant differences in blood lipid and liver function levels before and after one month treatment between the two groups. After one month treatment, levels of TC, LDL-C, ALT and AST were significantly decreased in both groups of patients compared with those before treatment (P<0.05). There were no significant differences in levels of TG, and HDL-C before and after treatment between two groups. The incidence of MACE (heart failure and angina pectoris) was significantly lower in moderate-dose group than that in low-dose group (P<0.05). There was no significant difference in the proportion of malignant arrhythmia between the moderate-dose group and the low-dose group (P<0.05). No target vessel repair and death were found in the two groups. No obvious adverse drug reactions were found during the follow-up period. Conclusion The hypolipidemic effects are epuivalent between 5 mg/d rosuvastatin and 10 mg/d on the basis of conventional treatment for STEMI patients, but the moderate dose can reduce the incidence of MACE and improve prognosis.

AIM: To understand whether reactive oxygen species promote the rupture of atherosclerotic plaques by regulating the balance of matrix metalloproteinase-1,3 (MMP-1,3) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) in smooth muscle cells. METHODS: Aortic smooth muscle cells from 4-6months-healthy abortive fetuses were incubated for 24 hours with xanthine (100 ?mol/L) and xanthine oxidase (5 U/L) in vitro . MMP-1,3 and TIMP-1 in the concentrated culture media were measured by Western blotting ( n =3 independent experiments). RESULTS: Incubation with xanthine/xanthine oxdiase decreased the amount of MMP-1 in the aortic smooth muscle cells (21.2%?5.5% of the control group),and pro-MMP-1 was activated completely. Reactive oxygen species (ROS) also activated pro-MMP-3,and increased the production of MMP-3 in the aortic smooth muscle cells. On the other hand,ROS inhibited the production of TIMP-1 in the aortic smooth muscle cells. CONCLUSION: It is complicated that ROS regulates the balance of MMPs and TIMPs. ROS may contribute to matrix degradation and the rupture in the atherosclerotic plaques.

Objective: To improve the traditional preparation procedure of effervescent tablets in order to raise stabilization. Methods: The orthogonal design was used for improvement of process. Results: The optimum procedure condition was A 3B 2C 1. That is adding 7.5% citric acid, 11.25% sodium bicarbonate encapsulated by 5% PEG. Conclusion: The new procedure is superior to the traditional procedure, and it is suitable for the requirement of production on a large scale.

This article introduces the way of making and using ultrasound multimedia courseware,which can improve teaching means,enrich teaching contents,activate classroom atmosphere and enhance the connection of basic and clinical knowledge.Meanwhile,the environment request of the demonstration courseware and interaction courseware as well as the necessity and significance of multimedia in ultrasound teaching are discussed.It is suggested that computer assisted instruction(CAI) plays an important role in ultrasound teaching.