OBJECTIVE:To systematically review the efficacy and safety of Deproteinised calf blood serum injection in the treatment of cerebral infarction,and to provide evidence-based reference for clinical treatment.METHODS:Retrieved from Co-chrane Library,EMBase,Medline,CBM,CJFD,VIP and Wanfan database,randomized controlled trials(RCT)about theeffica-cy and safety ofDeproteinised calf blood serum injection(test group)based on basic treatment(control group)in the treatment of cerebral infarction were collected.Meta-analysis was performed by using Rev Man 5.2 software after data extraction and quality eval-uation with Cochrane system evaluation manual 5.1.0.RESULTS:A total of 18 RCTs were included,involving 2 111 patients.Re-sults of Meta-analysis showed the total effective rate [OR=3.30,95%CI(2.48,4.39),P<0.001],National Institutes of Health Stroke Scale (NIHSS) score[MD=-1.47,95%CI(-2.06,-0.88),P<0.001] and activities of daily living(ADL) score[MD=9.09,95%CI(6.46,11.72),P<0.001] in test group were significantly better than control group,there were significant differences be-tween the 2 groups;and there was no obvious adverse reactions during treatment. CONCLUSIONS:Both efficacy and safety of De-proteinised calf blood serum injectionin the treatment of cerebral infarction are good.

ObjectiveTo establish the rapid molecular diagnosis of 16 common coagulase negative Staphylococcus(CNS).MethodsDNA sequencing of 16 CNS would be obtained with gap gene.After the alignment gap gene sequences which were available in the GenBank,the bacteria were identified with homological alignment and phylogenetic tree,and compared with the 16S rRNA gene.ResultsThe sequence similarity of the gap sequences ranged from 39% to 98% in 16 CNS.There were the highest similarity (98%) between S.hominis and S.hominis subsp,and the lowest(39% ) between S.saprophyticus and S.xylosus.The sequence similarity of the 16S rRNA sequences ranged from 96 to 98%,at least two species of bacteria similar rate of 99% and the most four species similar rate of 99%.Phylogenetic homology analysis showed that it was a high confidence(99% ) in the detection ofS.xylosus and S.lentus,S.chromogenes and S.intermedius,S.hominis and S.hominis subsp,but for 10 other species of bacteria,gap homology analysis has less unreliable confidence(49%,56% ) and 16S rRNA has more unreliable confidence(43%,43%,50%,56%,63%,65%,76% ).ConclusionAnalysis of gap sequence could identify 16 CNS timely and accurately,with higher confidence than 16S rRNA.

Objective To detect the main virulence genes and biofilm formation of Enterococci strains isolated from blood samples .Methods Twenty-eight strains of Enterococcus faecalis ( E.faecalis) and 54 strains of Enterococcus faecium ( E.faecium) were collected from blood samples .Five main virulence genes (asa1, esp, hyl, cylA and gelE) were detected by multiplex PCR.Biofilm formation was investigated by using microtiter dish biofilm formation assay .Results All E.faecalis strains were positive for at least one kind of virulence genes , of which 14 strains were concurrently positive for asa1, esp, cylA and gelE.asa1, cylA and gelE were only detected in E.faecalis strains, while hyl gene only existed in E.faecium strains. Twenty-seven strains of E.faecium were esp positive, of which 12 strains were both hyl and esp positive. None of the 5 virulence genes were identified in 10 strains of E.faecium.85.7% of E.faecalis strains and 63.0%of E.faecium strains could form biofilm.Conclusion Compared with E.faecium strains, more types of virulence genes were detected in E.faecalis strains with higher positive rates .Moreover , E.faecalis strains were more likely to form biofilms than E.faecium strains.

Objective To detect the hypermucoviscosity phenotype , capsular serotype and virulence gene of Klebsiella pneumonia (K.pneumonia) from various kinds of clinical specimens and understand the characteristics of different K.pneumonia causing infections.Methods A retrospective study was conducted through collection of 178 K.pneumonia isolates from blood, sputum, bronchoalveolar lavage fluid , urine, normally sterilized fluid , puncture fluid from liver abscess and other abscesses between January 2010 and December 2012 in General Hospital of Chinese PLA.String test was carried out for detection of hypermucoviscosity phenotype.Capsular serotype and virulence gene ( rmpA) were checked by polymerase chain reaction.Analysis was made according to the hypermucoviscosity , capsular serotype , rmpA gene , as well as the sources of K.pneumoniae.Statistic data was analyzed by contingency table analysis and χ2 test.Results Eighty-three out of 178 ( 46.6%) strains of K.pneumonia were hypermucoviscous with positive string test, the positive rate of virulence gene rmpA was 92.8%(77/83).K1/K2/K57 capsular serotypes were the predominant serotypes in the group of puncture fluid from liver abscess and other abscesses (75.0%,27/36)than the group of blood (32.4%,12/37), urine(21.7%,5/23) and normally sterilized fluid(25.0%,5/20), and also more than in the group of sputum , bronchoalveolar lavage fluid (50.0%,22/44),χ2 =21.19,P<0.01.The positive rate of string test in the group of puncture fluid from liver abscess and other abscesses (77.8%, 28/36)was significantly higher than the group of blood (29.7%, 11/37), urine (30.4%, 7/23), or normally sterilized fluid (25.0%, 5/20),χ2 =27.90,P<0.01.The positive rate of rmpA gene in the isolates from puncture fluid of liver abscess and other abscesses was higher than other groups.Conclusions As the pathogens of various kinds of infections , mainly abscess and respiratory infection, hypermucoviscous strains of K.pneumonia were of great clinical significance.Capsular serotype K57, as well as K1 and K2, possessed hypermucoviscosity and hypervirulence in China.

Aim To observe the effects of tetrahydro-biopterin ( BH4 ) on nitric oxide ( NO ) production in the kidney of type 2 diabetic nephropathy ( DN) mice, and to find a new target for the treatment of type 2 DN. Methods The 12 week-old db/db mice developed in-to DN phase were divided into 2 groups:DAHP group, subjected to intraperitoneal injection of 150 mg·kg-1 DAHP (n=8);DN group, subjected to intraperitone-al injection of same dose of normal saline containing 5% DMSO ( n = 6 ) . The age-matched db/m mice ( NS group) were subjected to intraperitoneal injection of same dose of normal saline containing 5% DMSO ( n =6 ) . Three groups of mice were treated for 7 days. Then the fasting blood-glucose, serum creatinine, u-rine protein and activity of iNOS were determined by chemical colorimetry. And the iNOS protein in renal cortex was determined by immunohistochemisty and western blot, respectively. BH4 was measured by HPLC method. NO level was determined by Griess method. Results The levels of fasting blood-glucose, serum creatinine, 24h urine volume, 24h urine pro-tein, BH4 , iNOS and NO in DN group were signifi-cantly higher than those in NS group;The levels of ser-um creatinine, urine volume, urine protein, BH4 , iN-OS and NO in DAHP group were significantly lower than those in DN group. Conclusion In the kidney of type 2 DN mice, the increased BH4 contributes to over-production of NO by the increased iNOS expression, and resultes in the increase of urine volume and urine protein.

Experiments were conducted to investigate the suitability of the multistage in-situ reaction analyzer based on a micro fluidized bed ( MFB-MIRA) for measuring the rapid change of the gas concentration during gas-solid reactions. The results showed that the control performance of capillary temperature had a great impact on the stability of on-line measurement. Based on the observed regular patterns, the capillary temperature control system was equipped with a precision temperature controller. The control precision of capillary temperature reached ± 0 . 2℃, which guaranteed the high stabilities of the sampling flow rate and the chamber vacuum. The measured results of the modified gas monitoring system showed the periodic fluctuations of the on-line measurement were eliminated. The stability of measurement was significantly improved. The fluctuating range and relative standard deviation of the measured response to O2 in air changed from 1. 9% and 0. 5% to 1. 4% and 0. 2%, respectively. A pressure regulating device was also developed to control the absolute pressure at the gas sampling point. The control precision reached ± 0. 02 kPa. The measured results showed that the response of the process mass spectrometer was positively correlated with the absolute pressure at the sampling point, indicating the necessity of the pressure regulating device. The accuracy and repeatability of process mass spectrometer were improved. This study has enhanced the suitability of MFB-MIRA for studying rapid gas-solid reactions and broadened the scope of reliable applications of MFB-MIRA and process mass spectrometer.

Objective To evaluate the diagnostic value of Tuberculosis Infection in T Cell Test(T‐SPOT .TB) for smear negative pulmonary tuberculosis .Methods Separately used T‐SPOT .TB ,TB‐DNA ,TB‐DOT the three diagnostic methods for tuberculosis , separately detected with each method ,112 smear negative pulmonary tuberculosis ,and 60 non tuberculosis regarded as control group .Results The sensitivity of T‐SPOT .TB ,TB‐DNA ,TB‐DOT in proper sequence were 88 .3% ,25 .9% ,58 .9% .Contrasted to TB‐DNA and TB‐DOT ,the differences were statistically significant(X2 =86 .6 ,P<0 .01 ;X2 =23 .3 ,P<0 .01);the specificity of T‐SPOT .TB was 96 .7% ,significantly higher than TB‐DOT (78 .3% ) ,the differences were statistically significant(X2 = 9 .22 ,P<0 .05) .Conclusion T‐SPOT .TB has obvious advantages in sensitivity and specificity for smear negative pulmonary tuberculosis .It can be one auxiliary tool for smear negative pulmonary tuberculosis early diagnosis ,provided with the value of fast and accurate .

Hilar cholangiocarcinoma (HCC) is a rare tumor with a poor prognosis.With the development of high definition imaging technology,improvement of surgical instruments,optimization of perioperative surgical strategies and accumulation of surgical experiences,the radical resection rate of HCC is significantly improved.Operation is the main method of treatment for HCC,and radical resection is important for a long-term survival of HCC patients.The clinical data of 66 patients with HCC who were admitted to the Beijing Youan Hospital from April 2004 to April 2012 were retrospectively analyzed.The key points in surgical procedure and prognosis of patients were investigated.

Objective To investigate the value of muhi-detector CT (MDCT) low tension dynamic enhanced scanning on the preoperative assessment of advanced gastric cancer.Methods MDCT low tension dynamic enhanced scanning,tumor diagnosis and staging and prediction of surgery operation were performed on 43 cases of advanced gastric cancer.And the above results were compared with pathology results.Results The 36 cases were treated with resection,while 7 cases were treated by gastrointestinal anastomosis.The MDCT had 76.7 ％ (33/43) of accuracy for the preoperative T staging and 74.4 ％ (32/43) of accuracy for the preoperative N staging,respectively.The stomach wall thickness was closely related to serosal invasion (x2 =20.170 9,P ＜ 0.001).Conclusions The MDCT low tension dynamic enhanced scanning can improve the comprehensiveness and accuracy of preoperative staging of T and N in advanced gastric cancer.It is valuable for the preoperative diagnosis and treatment of gastric cancer.