Objective To investigate the effect of fenofibrate on the matrix metalloprotenase-9 (MMP-9) expression and the proliferation of cultured human umbilical vein endothelial cell (HUVECs) induced by oxidized low density lipoprotein(ox-LDL-C).Methods HUVECs cultured in vitro at passage 4 to 9 were used for the experiment.They were divided into control group,ox-LDL-C group (100 mg/L) and ox-LDL-C + fenofibrate group.The cells in ox-LDL-C + fenofibrate group were firstly incubated with 10,50,100 μmol/L fenofibrate respectively for 6 h,then incubated with 100 mg/L ox-LDL-C for another 24 h.MMP-9 expression in supernatant medium was detected by enzyme-linked immuno sorbent assay (ELISA) and cell proliferation was measured by MTT assay.Results Compared with the control group,ox-LDL-C (100 mg/L) could inhibit the proliferation of HUVECs (P ＜ 0.01) and promote the production of MMP-9 of HUVECs.Fenofibrate could inhibit the proliferation of HUVECs induced by ox-LDL-C in a dose-dependent manner (P ＜ 0.01).Fenofibrate (10,50,100 μmol/L) could significantly stimulate the production of MMP-9 of HUVECs induced by ox-LDL-C (P ＜ 0.01).The stimulation effect was dose-dependent.Conclusion Fenofibrate can inhibit the production of MMP-9 in HUVECs induced by ox-LDL-C,promote the proliferation of HUVECs and protect endothelial function in a dose-dependent manner,then may play the role of anti-artherosclerosis besides lipid regulation.

OBJECTIVE To investigate the distribution and drug resistance of the bacteria encountered from the(clinical) infection,and provide reference for the rational use of agents in clinics.METHODS To culture the(specimens) from inpatient and outpatient clinic from Dec 2004 to Mar 2005,and perform the drug (sensitivity) test.RESULTS In 1584 isolated strains,the first four were coagulase negative Staphylococcus((15.6%),) Klebsiella(13.0%),Escherichia coli(10.0%),and Candida albicans(9.9%).The highest resistance of Gram(-negative) bacilli was to ampicillin(86.7%),then to cephalothin(79.5%),and mezlocillin(75.7%);G~-bacilli were(sensitive) to meropenem(2.3%),piperacillin/tazobactam(19.0%),and fosfomycin(29.1%).Gram~+ cocci had drug(resistance) to 18 antibacterials except vancomycin,MRSA was higher than MSSA;(Enterococcus) faecium showed poor sensitive rate to penicillin and erythromycin.CONCLUSIONS We should give more attantion to the Rules on Antibacterials in Clinical Application and use drugs reasonably.

Objective To establish a preprocedure nomogram for predicting contrast-induced acute kidney injury (CI-AKI) after coronary angiography (CAG) or percutaneous coronary intervention (PCI).Methods Clinical data of 245 patients underwent CAG or PCI were collected.CI-AKI prediction nomogram integrated preprocedural predictors was established with clinical characteristics associated with CI-AKI which were selected with the LASSO regression model,and CI-AKI risk scores were calculated.The ROC curve was constructed to calculate the risk score cutoff.Results The occurrency of CI-AKI was 13.88％ (34/245).Sex,diabetes mellitus,lactate dehydrogenase level,high-sensitivity C-reactive protein,drinking years,chronic kidney disease (CKD),stage of CKD,stroke,acute myocardial infarction as well as systolic blood pressure were significant risk factors.The efficiency of CI-AKI nomogram was good,and the cutoff value of risk score was-1.953.Conclusion The novel nomogram can be used to preprocedurally predict the risk of CI-AKI after CAG or PCI treatment.

Objective To study and analyze the CT and MRI findings of hepatic eosinophilic infiltration. Methods Twenty nine patients of hepatic eosinophilic infiltration who were confirmed by biopsy or clinical diagnosis were retrospectively analyzed. All the patients underwent CT and/or MRI scan. Twenty seven cases underwent upper abdominal CT plain scan and three phase enhanced scan, and 5 cases underwent upper abdominal MR plain scan and three phase enhanced scan, of which 3 cases underwent CT and MRI scan. Evaluations were made regarding to the numbers of lesion, distribution, size, shape, margin, density or signal characteristic, enhancement parttern and other special features. Pearson correlation analysis was used to analyze the correlation between the number of hepatic lesions and the number of eosinophils in peripheral blood. Results A total of 108 lesions of eosinophilic hepatic infiltration were observed in 29 cases, including 2 cases with single lesion and 27 cases with multiple lesions. Ninety five of the lesions were located in subcapsular parenchyma or surrounding the portal vein. Most subcapsular lesions were wedge-shaped(n=28). Lesions surrounding portal vein were round-shaped(n=32), while the hepatic parenchymal lesions were irregular or round-shaped(n=13). The mean size of lesion was 34 mm, ranging from 3 to 61 mm. The margin of all the lesions were obscure. The lesions showed slightly low density or isodensity on CT pre-contrast images. On MR pre-contrast images, lesions showed slightly low signal or isointense on T1WI, and hyperintense on T2WI. Branches of portal vein were found infilrated by all lesions. Tueleve cases showed“stripe sign”along the portal vein branches, 16 cases showed“halo ring sign”around the portal vein. Pearson analysis indicated a significant correlation between the number of eosinophilic hepatic infiltrated lesions and the increase of eosinophils in peripheral blood (r=0.783, P<0.05). Conclusion The imaging features of EHI had certain characteristics, especially in the three phase dynamic enhanced scanning, from which we can mainly find“progressive enhancement”,“portal vein sign”,“stripe sign”and“halo ring sign”.

Objective:To analyze the implementation effects of a medical laboratory talent training program based on local colleges and universities' applied talent-oriented cultivation principal as well as students' interests and industry needs.Methods:Based on the design principals of clarifying the professional orientation, meeting the national standard, reconstructing the curriculum system, introducing the spirit of innovation and entrepreneurship, and multi-dimensional collaborative education, as well as the reverse design path of the outcome-based education concept, we have built a medical laboratory applied talent training system focusing on humanity education, solid foundation, broad employment, and good competency and in accordance with the "three complete education" strategy, along with measures including creating an applied teaching atmosphere, developing an applied curriculum teaching model, providing vocational guidance and improving vocational identity, and promoting education via evaluation. The system was applied to the training and practice of students of grades 2021 and 2022 majoring in medical laboratory technology. SPSS20.0 software was used for statistical analysis.Results:With the concept of application-oriented talent training and the "four-in-one" practical teaching model, students' skills were improved, and the training path was broadened. Compared with those trained with the original program (grades 2019-2020), the graduates trained with the new program (grades 2021-2022) showed a significantly decreased employment rate in medical laboratory jobs in medical institutions from 71.25% to 42.86% ( χ2=12.36, P<0.001), a significantly increased employment rate in in-vitro diagnostics industry from 3.75% to 17.14% ( χ2=7.44, P<0.05), and a significantly increased rate of applying for postgraduate education from 17.05% to 32.86% ( χ2=4.74, P<0.05). Conclusions:The medical laboratory talent training program based on the talent training principal of local colleges and universities combined with students' interests and industry needs can help improve the quality of talent training and broaden the employment path of graduates.

Objective: To evaluate the predictive value of cardiac magnetic resonance (CMR)-derived parameters on the improvement of left ventricular function in patients with acute viral myocarditis. Methods: Forty patients, who referred for acute viral myocarditis in our hospital from September 2011 to September 2015, were prospectively enrolled in this study.All patients were examined by CMR during hospitalization for acute viral myocarditis (baseline) and after 12 months.The CMR sequences include: two dimension steady state free precession, 2D SSFP; triple inversion recovery, triple IR; early gadolinium enhancement; phase sensitive inversion recovery turbo field echo, PSIR TFE. Results: Thirty out of 40 patients with susceptive acute viral myocarditis met the CMR criteria of acute viral myocarditis (Lake Louise Criteria) (LL+ ) and the other 10 patients did not meet the diagnostic criteria (LL-). Left ventricular ejection fraction (LVEF) values were significantly lower in LL+ group than in LL- group at baseline and at 12 months after discharge (P<0.01 or 0.05, respectively). The baseline left ventricular end-systolic volume index (LVESVI) was significantly higher in LL+ group than in LL- group (P<0.05) and was similar between the groups at 12 months follow up.Left ventricular end-diastolic volume index (LVEDVI )was similar between the two groups at baseline and at 12 months follow up.LVEF was significantly higher during 12 months follow up compared to baseline in LL+ group and remained unchanged in LL- group during the two time points.LVESVI and LVEDVI remained unchanged at baseline and during 12 months follow up both in LL+ and LL- groups (P>0.05). Results showed that LL+ , edema ratio (ER) positive and global relative enhancement (gRE) positive were associated with significant increase of LVEF at 12 months follow up.However, LL-, ER negative, gRE negative, late gadolinium enhancement(LGE) negative and LGE positive linked with unchanged LVEF at 12 months follow up (P>0.05). Patients were further divided into LVEF increase (ΔLVEF≥5%) group and non LVEF increase group (ΔLVEF<5%), the results of Chi-square test showed that LL+ and ER positive were related to the improvement of LVEF (P<0.05), while gRE and LGE were not associated with improvement of cardiac function (P>0.05). Multiple linear regression analysis, using ER, gRE and LGE as independent variables and LVEF as dependent variables, showed that the presence of myocardial edema was the strongest independent predictor of an increase in LVEF at follow up (full model: non-standardized coefficient 0.445, P=0.043; reduced model: non-standardized coefficient 0.442, P=0.12). Conclusion Cardiac magnetic resonance imaging monitoring is valuable to observe the cardiac function and morphology changes in patients with acute viral myocarditis, and myocardial edema imaging is the most powerful parameter to predict the improvement of LVEF in this patient cohort.