Objective:The chemiluminescence immunoassay for AngiotensinⅠ ( AngⅠ ) was developed by the competition method. The renin activity was calculated by the determination of Ang Ⅰ. Methods: AngⅠ antigen was labeled with biotin and fluorescein labeled AngⅠantibody,and anti fluorescein antibody was used to coated with the microporous plate . Results:The standard range of the method was 100-7 800 pg/ml. The assay sensitivity was 24. 3 pg/ml. The intra- and inter-assay coefficients of variance were 5. 6%-8. 7% and 6. 8%-10. 4% respectively. Analytical recovery was 95. 4%-105. 3%. The correlation coefficients between measured and expected values were 0. 999 after serial diluted. Compared with radioimmunoassay kit,the correlative equation was y=0. 95x+235. 70,correlation coefficient was 0. 973. Coated microporous plate and biotin labeled Ang Ⅰ antigen,and fluorescein labeled Ang Ⅰantibody at 37℃ for a week with good stability. Conclusion: The results of the method were in accord with the basic requirements of immunoassay.

Objective To analyze the retrieval of master and doctorial dissertations entitledsystematic review/meta analysis in domestic universities of traditional Chinese medicine. Methods Master and doctorial dissertations entitledsystematic review/meta analysis in domestic universities of traditional Chinese medicine retrieved from China Dissertation Full-text Database were analyzed using Excel and SPSS 17. 0,respectively. Results Of the 423 master and doctorial dissertations included in this study,71. 9% were retrieved from both Chinese and English databases, 27. 7% were retrieved from Chinese databases,82. 8% were retrieved from two or more Chinese databases,54. 1% were retrieved from two or more English databases. The most frequently retrieved Chinese database was CKNI, followed by VIP, CBM and Wanfang. The most frequently retrieved English database was PubMed, followed by Cochrane Library, EMBASE and OVID. Conclusion The low use of traditional Chinese medicine databases is the main prob-lem in retrieval of master and doctorial dissertations entitledsystematic review/meta analysis in domestic univer-sities of traditional Chinese medicine. No significant difference is found in retrieved doctorial dissertations and mas-ter dissertations between 211and non-211 universities of traditional Chinese medicine.

In industrial application of NAD(P)H-dependent dehydrogenases, NAD(H) has the advantages over NADP(H) in higher stability, lower price and wider recycling system. Recently, a meso-2,6-diaminopimelate dehydrogenase from Symbiobacterium thermophilum (StDAPDH) has been found to be a useful biocatalyst for the production of D-amino acids, but it requires NADP(H) as co-enzyme. To switch the co-enzyme specificity from NADP(H) to NAD(H), we studied the effect of Y76 on the co-enzyme specificity of StDAPDH, because the crystal structural analysis indicated that residue Y76 is near the adenine ring. The mutation of Y76 exerted significant effect on the co-enzyme specificity. Furthermore, the double mutant R35S/R36V significantly lowered the specific activity toward NADP+, and the combination of R35S/R36V with some of the Y76 mutants resulted in mutant enzymes favorable NAD+ over NADP+. This study should provide useful guidance for the further development of highly active NAD(+)-dependent StDAPDH by enzyme engineering.
Amino Acid Oxidoreductases ; chemistry ; Amino Acids ; Clostridiales ; enzymology ; Mutation ; NAD ; NADP ; Substrate Specificity

Objective To investigate the effect of blastocyst quality on the strategy of single blastocyst transfer in frozen-thawed cycles. Methods A retrospective analysis was performed in Reproductive Medicine Center, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region on clinical data of single frozen-thawed blastocyst transfer cycles from January 2008 to December 2013. All cycles were divided into four groups (AA, AB/BA, BB, BC/CB) according to the blastocyst score, then the clinical outcomes were compared between groups. And on this basis, the clinical outcomes were further explored when the group of outcomes with single blastocyst transfer wasn′t ideal, which would diverted to transfer two blastocyst. Results In single frozen blastocyst transfer cycles, the clinical pregnancy rate of each group with the blastocyst scored AA, AB/BA, BB, BC/CB were 61.4%(470/765), 51.2%(330/645), 40.5%(407/1 005), 22.9%(60/262), live births rate in each group were 52.2%(399/765), 41.2%(266/645), 30.4%(306/1 005), 13.7%(36/262), and the abortion rate were 13.6%(64/470), 16.7%(55/330), 21.4%(87/407), 35.0%(21/60), separately. This showed that the clinical pregnancy rate and live births rate decreased significantly with the decline of blastocyst quality (P<0.01), but the abortion rate showed significant upward trend (P<0.01). When single blastocyst scored≥BB grade transferred, an acceptable clinical pregnancy rate (>40%) and live births rate (>30%) could be obtained, however, the clinical pregnancy rate of 22.9% and live births rate of 13.7%could only be acquired when blastocyst scored BC/CB only transferred one embryo, which significant lower than those of each group scored ≥BB grade (P<0.01). So, after that, the blastocyst scored BC/CB were further divided into two groups (single blastocyst transferred versus two blastocyst transferred) to investigate, then the result showed that the clinical pregnancy rate [22.9%versus 38.5%(67/174), P<0.01] and live births rate [13.7%versus 30.5%(16/67), P<0.01] were significantly increased in the group of two blastocyst transferred compared with the group of one blastocyst transferred, and the abortion rate was also significantly decreased from 35.0%to 17.9%(12/67;P<0.05). So when two blastocyst scored BC/CB were transferred, the clinical outcomes were similar to the group of one blastocyst scored BB transferred (P>0.05). Conclusions Of single blastocyst transfer in frozen-thawed cycles, the clinical pregnancy rate and liver births rate showed significant upward trend, but the abortion rate showed significant downward trend, with the decline of blastocyst quality. When the blastocyst scored ≥BB grade, the single blastocyst transfer could be considered to be performed.

Objective To discuss the treatment of femoral fracture combined with ipsilateral acetabular fracture and femoral head dislocation and the reasons for the misdiagnosis of the injury. Methods According to AO classification, there were 3 cases of type 32A, 2 of type 32B, and 1 of type 32C, who were treated with internal fixation of interlocking nails. There was 1 case of type 33C3, who was treated with femoral condyle supporting plate. There were 2 cases of type 31A2, who were treated with DHS. According to the Letournel classification, fracture of the acetabular posterior wall was found in 8 cases and fracture of the acetabular posterior column and wall in 1 case. All the cases of acetabular fracture were treated with internal fixation of titanium alloy reconstructive plates. Delayed diagnosis was found in 2 cases in this group. Results The 9 patients were followed up for 13 to 38 months (averaging 22.4 months). According to the American criteria, 8 cases was rated as excellent, and 1 case as good, with thd total excellent and good rate being 100%. Conclusions Femoral fractures combined with ipsilateral acetabular fracture and femoral head dislocation are a rare, complex and serious injury. They usually involve other organs, and are easy to be misdiagnosed. The surgeries should be done as early as possible. The internal fixation plays a key role in management of the fracture of acetabular.

Objective To investigate the effects on pregnancy outcome and neonate by artificial shrinkage by microsucting the fluid of expanded blastocysts before vitrification using glass micropipette (GMP).Methods From Jan.2006 to Dec.2009, 342 vitrified-thawed blastocyst cycles from patients that performed in vitro fertilization-embryo transfer (IVF-ET) or intracyteplasmic sperm injection ( ICSI ) were enrolled in this study in Reproductive Medicine center, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region.Three hundred and fourteen cycles of expanded blastocysts were artificially shranked by microsucting blastocoelic fluid with a micro-needle before vitrification as artificial shrinkage group, in the mean time, 28 cycles without artificial shrinkage were chosed as control group.The survival rate, implantation rate, clinical pregnancy rate and transfer canceled rate were compared between artificial shrinkage group and control group.Among pregnant women, the miscarriage rate, live birth rate, congenital birth defect rate, neonatal weight and gestational age were compared with those of fresh embryo transfers in 520 cycles.Results The blastocyst survival rate, implantation rate and clinical pregnancy rate were 95.3%(403/423), 38.0% ( 153/403), 44.6% (140/314) in artificial shrinkage group and 64.3 % (27/42),7.4% (2/27), 7.1% (2/28) in control group, respectively, which reached statistical difference (P＜0.05).The transfer canceled rate was 0 in artificial shrinkage group and 25.0% (7/28) in control group, which also reached statistical difference ( P ＜ 0.05 ).Among pregnant patients, the miscarriage rate of 18.2% (10/55), live birth rate of 80.0% (44/55), gestational age of (38.2 ± 1.3) weeks, congenital birth defect rate of 2.1% (1/47), birth weight of newborns of (2989 ±640) gram in artificial shrinkage group were not significantly different with 17.5% (91/520), 74.0% (385/520), (37.9 ±2.3) weeks,1.7% (8/479) and (2856±640) gramin fresh embryo transfer group (P＞0.05).Conclusion Artificial shrinkage by microsucting blastocoelic fluid with a micro-needle before vitrification significantly improved the vitrification effects of expanded blastocyst and no distinct increasing rate of neonates congenital anomality were observed.

Collection and quality control of inpatient medical record home page information are key to the study and use of DRGs.The paper covered the sampling methods, inspection items, inspection methods, data assembly methods, and data reporting quality scoring methods of Beijing authorities on the hospitals in the city.Also introduced were the inspection results of the city in 2014, which prove a satisfactory outcome in the end.

Objective To reduce the incidence of the hypocapnia,the cutoff value of the end-tidal carbon dioxide partial pressure[Pet(CO2)] for predicting the hypocapnia so as to understand the suitable adjustment target and target range of the Pet(CO2) in preterm infants under mechanical ventilation.Methods From Jan.2012 to Oct.2013,96 cases of the preterm infants with respiratory distress syndrome(RDS) who needed mechanical support were selected from the Huaian Maternity and Child Health Care Hospital.Pet(CO2) value of each time point(1 h,24 h,48 h and 72 h after mechanical ventilation) were recorded,while radial artery blood was collected for blood gas analysis.The level of pa (CO2) ＜ 35 mmHg(1 mmHg =0.133 kPa) diagnosed hypocapnia;while the level of Pa (CO2) ＞ 60 mmHg was for diagnosing hypercapnia.The diagnostic cutoff and the suitable adjustment target and adjustment target range of the Pet(CO2) were confirmed by receiver operating characteristic (ROC) curve.Results The data from 381 arterial blood gas analysis results were gained,of which 151 times belonged to hypocapnia,and the rate was 39.6％,the other 230 cases were normal,and no case was of hypercapnia.The area under the ROC curve was 0.895,and the area of the standard error was 0.016.There was a statistical significance in Pet(CO2) value for the diagnosis of hypocapnia(P =0.000).The lower the value of Pet (CO2),the greater the likelihood of hypocapnia,and 95 ％ confidence interval area was 0.864-0.926.The Pet (CO2) optimal diagnostic cutoff value determined in accordance with Youden index was 30.5 mmHg.When Pet (CO2) among 41.5 mmHg,sensitivity was 100％.Conclusions Diagnostic cutoff value for forecasting hypocapnia is 30.5 mmHg.The suitable adjustment target of mechanical ventilation parameter adjustment is 41.5 mmHg for the Pet(CO2).The target range of mechanical ventilation parameter adjustment is 30.6-41.5 mmHg for the Pet(CO2).

Objective To evaluate the effectiveness of Percu Twist (PT) tracheostomy comparing with that of operative tracheostomy(OT)in intensive care unit(ICU). Methods Related data were retrieved from CBM,CNKI,Wanfang Data,VIP,PubMed,EMBASE,CENTRAL,and Web of Science from the time of their establishment to May 15th 2014,and the data of randomized controlled trials(RCTs)concerning PT and OT were selected. The risk of bias assessment and data extraction were performed by two independent reviewers. Meta analysis was conducted using RevMan 5.2 software. Results A total of 12 RCTs were identified,and 893 patients in ICU were involved. The results of Meta-analysis showed that PT could significantly shorten the operation time〔mean difference (MD)=-15.11,95% confidence interval(95%CI)=-17.14 to -13.07,P<0.000 01〕,reduce the volume of blood loss(MD=-17.59,95%CI=-21.90 to-13.28,P<0.000 01),reduce the size of incision(MD=-2.20, 95%CI=-2.57 to -1.82,P<0.000 01),shor ten the time of healing(MD=-3.60,95%CI=-4.15 to -3.05, P<0.000 01),and reduce complications such as infection of the wound〔odds ratio(OR)=0.20,95%CI=0.10-0.44,P<0.000 1〕and cutaneous emphysema/mediastinal emphysema(OR=0.22,95%CI=0.10-0.47,P<0.000 1)compared with OT group. The funnel plot suggested that publication bias might be found among 12 researches. Conclusions PT was shown to be more effective than OT in ICU with lower incidence of complications. As number of RCT cases is still small with unsatis factory quality,further clinical use is warranted for a better assessment.

Objective: To compare the protective effect of various preparations from Tiaogan Lipi prescription on mouse ethanol hepatic injury.Methods:The hepatic injury model of mice was replicated with ethanol.Comparing with Fufang Biejia Ruan’gan prescription,three preparations from Tiaogan Lipi prescription were administrated for protecting the hepatic injury.The contents of AST,ALT,CHOL and TG in serum and the MDA and SOD in liver tissue were tested.The pathological changes of the liver had been evaluated.Results:Three preparations from Tiaogan Lipi reduces the level of ASTALTCHOL TG,lowers the content of MDA(P