OBJECTIVE To explore the role of Tn5281 in high-level gentamicin resistance(HLGR) of Enterococcus faecalis. METHODS Fifty four strains of HLGR E.faecalis were tested for Tn5281 by PCR method.The PCR products were confirmed by dot blot hybridization and sequencing.Filter mating method was used to investigate the conjugative plasmid transfer.Antimicrobial susceptibility test was performed by agar dilution method of CLSI/NCCLS. RESULTS Of 54 HLGR E.faecalis strains,27(50.0%) carried different types of Tn5281,with 6 strains carrying complete type,17 strains carrying truncated type Ⅰ(lacked IS256 in the right flanking extremity) and 4 strains carrying truncated type Ⅱ(lacked IS256 in the left flanking extremity).All types of transposons were loaded on plasmids. Among four HLGR E.faecalis in which Tn5281 was successfully transferred to recipient strains by filter mating method,one carried complete type and three carried truncated type Ⅰ.Tn5281 carrying strains had higher resistance rates to penicillin and ampicillin and lower resistance rates to tetracycline and chloramphenicol compared to the strains not carrying Tn5281.(CONCLUSIONS Tn5281) is commonly carried by HLGR E.faecalis.It may integrate into conjugative plasmids and play an important role in the dissemination of HLGR among E.faecalis.

0.05). ②Therapeutic study: The Mankin's score of OA group was higher than high or low SmCCⅡ group (6.96?1.02), (3.08?0.45), (4.00?0.94) respectively, P 0.05). CONCLUSION: SmCCⅡ can delay the degradation of articular cartilage of OA rats and maybe effective for OA prevention or treatment. The mechanism maybe related to SmCCⅡ reducing the synthesis of MMP-13, MMP-9 and Cath K at transcriptional level.

Objective To study the effects of combination therapy (psychological intervention+clopidogrel+aspirin) for coronary heart disease. Methods 88 cases were selected from January 2016 to April 2017 in patients with coronary heart disease in our hospital. In a randomized approach, patients were divided into treatment groups and control groups, with 44 cases per patient. Patients in the control group were treated with aspirin, and the treatment group was treated with a combination therapy (psychological intervention+clopidogrel+aspirin). The treatment effect, angina and adverse reaction were observed and compared. Results Comparing the therapeutic effect of two groups of patients, the treatment group total effective rate was 97.73%, control group total effective rate was 79.55%, significant difference was statistically significant (P<0.05); Compared two groups of patients with angina, the treatment group patients with onset time (4.32±1.18) shorter, longer time interval (5.03 ±1.34), less number of attacks (1.67±0.49), with statistical significance (P<0.05); Compared to the adverse reactions in the two groups, the incidence of adverse reactions in the treatment group was 4.55%, compared with 18.18% in the control group. Statistical significance (P<0.05). Conclusion Psychological intervention in combination with clopidogrel and aspirin enteric-coated metformin hydrochloride in the treatment, in the clinical treatment of patients with coronary heart disease angina pectoris, shows good therapeutic effect, has higher application value.

In the event of public health emergencies,information publicity is necessary and important.Currently,China's information publicity system in public health emergencies has achieved a certain success in the building of legal system;however,there are still a lot of constraints,in particular the lack of subjective consciousness of government officials,seriously affecting the implementation of information publicity.Therefore,for further improvement in the information publicity,the driving mechanism should be standardized and specified.

Objective To establish a quality evaluation method for determination of paris saponinⅠ,Ⅱ,Ⅵ,Ⅶ in paridis rhizhma by quantitative analysis of multi-components with single-marker (QAMS).Methods An HPLC method and a Phenomenex Luna C18 column(4.6 mm×250 mm,5 μm)were used.The mobile phase was acetonitrile-water (48:52) at a flow rate of 1.0 mL·min-1.The detection wavelength was 203 nm and column temperature was 25 ℃.Parissaponin Ⅶ was used as the internal reference substance.The relative correlation factors of parissaponinⅠ,Ⅱ,Ⅵ were calculated by standard curve method and QAMS.Results The QAMS method could be used for determination of four saponin components at the same time without significant difference as compared with the results of standard curve method (RSD<2.0%).Conclusion QAMS method is simple and reproducible,which can provide a reference for quality standard revision for paridis rhizhma.

Objective To observe the influence of interleukin-1β (IL-1β) on the expression of phosphorylated signal transducers and activators of transcription 3 (pSTAT 3) in rat retinal MOiler cells. Methods For in vitro study cultured Mailer cells were treated with IL-1β of different concentrations (0, 0.1, 1, 5 and 10 ng/ml) for 24 hours. For in vivo study, 32 Sprague-Dawley(SD)rats were divided into 4 groups randomly (control group, 100,500 and 1000 ng/ml group) with 8 rats in each group. After 24 hours of injection with phosphate buffered solution (PBS), or 100, 500, 1000 ng/ml IL-1β into the vitreous treated retinas were evaluated by indirect immunofluorescence and western blotting. Results After 24 hours of incubation without IL-1β, pSTAT3 has little expression in cultured Muller cells, but was up-regulated by 1 ng/ml or higher IL-1β in a dosage-dependent manner (F=46.64, 43.78; P<0.01). pSTAT3 was not expressed in adult rat retina, but was up-regulated by vitreous injection of 100 ng/ml or higher IL-1β in a dosage-dependent manner (F=73.53, 43.70; P<0.01). pSTAT3 expressed mainly in inner nuclear layer and ganglion cell layer. Double-labeling showed that there was no co-staining of pSTAT3 and glial fibrillary treated with IL-1β. Conclusions Expression of pSTAT3 in MUller cells could be activated by IL-1β which may represent one pathway link to reactive gliosis.

Objective To investigate the risk factors associated with early mortality of the rapid two-stage arerial switch operation, which has a significantly higher overall mortality than that of ASO procedure for D-TGA with a intact ventricular septun. Methods The data we reviewed involving patients who underwent rapid two-stage switch operations from September,2002 to September, 2007 in our center, 13 patients were male and 8 were female, their age at operation ranged from 29 to 250 days afer birth, and the body weight was 3.5 to 7 kg. Chi-squared test and multivariant logistic regression methods were used for the analysis of demographic data, pre-diagnosis information, operation data, interval data combined with the operation time,left ventricle training condition, and the early post-operative outcomes. Results The operative mortality was high at initial stage, and then decreased gradually. The logistic multivariant regression analysis indicated that the mortality of left ventricular training operation was associated with the diameters of BT shunt ( P =0.003 ); the mortality of two-stage switch was associated with feminie ( P = 0.006 ) and pre-operative p. LV/RV ( P ＜ 0.001 ). Conclusion Patients with transposition of the great arteries and intact ventricular septum who missed the optimal time for switch operation should receive rapid two-stage switch operations, which provide an opportunity for the correction of the deformity. The key factor associated with the success for operation was good in heart function after left ventricular training.

To investigate the preventive and treated effects of protein A immunoadsorption on hyperacute rejection of highly sensitized renal transplant recipient. A total of 12 highly sensitized renal transplant recipients were selected from Department of Organ Transplantation, Zhengzhou People's Hospital between January 2006 and January 2008. Immunoadsorption treatment was performed on 12 renal transplant recipients whose panel reactive antigen was more than 50% once a week for 4-6 weeks before operation. At one day before operation, the treatment was performed once. The treatment was performed at once if the acute rejection occurred after operation. The acute rejection and adverse effect were observed. Hyperacute rejection was not occurred in any recipient. Sudden oliguria and increase of serum creatinine were occurred in two cases at several days after operation. The pathological examination showed there were inflammatory cells infiltration and edema in renal interstitial, lymphocyte aggregation around renal tubular, monocytes infiltration in capillary, endarteritis, and necrosis of small vessels in the two cases. They were diagnosed as acute rejection. Their panel reactive antibody level increased again. Average level of Class Ⅰ was 3.8% and class Ⅱ was 19.2%. Acute rejection were reversed and renal function recovered to normal by the therapy of protein A immunoadsorption and pulse therapy of high dose methylprednisolone. Average level of Class Ⅰ was 8.3% and class Ⅱ was 5.2%. One year follow-up were obtained from all recipients. Their transplanted renal function were good, which suggested protein A immunoadsorptin could eliminate antibody in recipients quickly, decrease panel reactive antibody level, and prevent acute rejection.

ObjectiveTo investigate the effect of thalidomide on the proliferation and apoptosis in human pancreatic cancer cell SW1990 in vitro.MethodsSW1990 cell line was treated with thalidomide at different concentrations (3.125,6.25,12.5,25,50,100,200 and 400 μg/ml) for 24,48,72 h,and then cell proliferation were evaluated by MTT.Cell cycle was determined by flow cytometry,apoptosis was determined by annexin V/PI fluos staining,Bcl-2,Bax protein expression and Bcl-2/Bax ratios were measured by Western Blot in vitro.ResultsThalidomide inhibited the proliferation of SW1990 cells in a time and dosedependant manner.The proportion of G0/G1 phase of SW1990 cells with 200 μg/ml thalidomide treatment increased from (41.15 ± 2.23 ) ％ to (58.83 ± 2.33 ) ％,apoptosis rate increased from 2.6％ to 28.0％,the expression of Bax protein up-regulated from 0.17 ± 0.03 to 0.33 ± 0.04,the expression of Bcl-2 protein downregulated from 0.35 ± 0.02 to 0.17± 0.01,the ration of Bcl-2/Bax decreased from 2.17 ± 0.44 to 0.52 ±0.07.ConclusionsThalidomide can inhibit the proliferation of pancreatic cancer SW1990 cells by upregulating Bax,down-regulating Bcl-2,inducing cell apoptosis and cell Go/G1 phase arrest.

Objective　To study the ultrasound image feature of acute hepatic lesions in different times.Methods　The feature of ultrasonography in 126 cases with acute hepatic lesions were analyzed and divided into two groups according to different fime after injury: group A, 25～60 minutes after injury; group B, 60～120 minutes after injury.Results　There was significant difference in the structure of sonographic classification between two groups. The high echos was obviously higher in group A than that in group B, while the mixed echos was obviously higher in group B than that in group A (P<0.001). Compared each types in group A and in group B,the high achos in group A and the mixed achos in group B were higher than other types in same group (P<0.001).Conclusions　The ultrasonographic feature of acute hepatic lesions would change with time. The high echos occurs in eaily time after injury ,and then changes into the mixed echos.