Under the background that the job division and complication of the laboratory instrument are highly improved, It puts forward the new demand for the use and maintenance of the laboratory instrument. Nowadays, for the lack of training, Many staff in medical laboratory can not correctly use and maintain the instrument in their rotation to various departments. The problems are solved by the following ways: making an appropriate staff rotation plan, ensuring all operations were carried out strictly according to the instrument guide book, establishing the holder appointment system and individual responsibility system, ensuring the reports were sent out by the new rotating personnel independently only after strict training and qualified examination. Through these methods, the accuracy of the equipment and the quality of testing have greatly increased.

Objective To analyze the rules of acupoint selection in treating knee osteoarthritis with acupuncture and moxibustion therapy based on data mining; To provide references for clinical treatment.MethodsArticles about treating knee osteoarthritis with acupuncture and moxibustion were retrived from China National Knowledge Infrastructure (CNKI), Wanfang academic periodical full-text database, Chinese Journal Full-text Database (VIP) and SinoMed in China from Jan. 1st 2006 to Jan. 1st 2016. The database of acupuncture and moxibustion prescription was set up. The Apriori association rules, system cluster analysis and factor analysis were adopted in order to analyze the rules of acupoint selection for knee osteoarthritis.ResultsTotally 190 articles were included, covering 228 acupuncture- moxibustion prescriptions, 65 acupoints and the total frequency for 1736 times. The usual acupoints in the lower limbs were Dubi (ST35), Neixiyan (EX-LE 4), and Yanglingquan (GB34). The main maridians were Stomach Meridian of Foot-Yangming, Spleen Meridian of Foot-Taiyin, and Gallbladder Meridian of Foot-Shaoyang, accounting to for 1626 times (93.66%). Cluster analysis achieved other four groups of acupoint selection based on syndrome differentiation.ConclusionLocal acupoints and dialectical point selection were important principle in treating knee osteoarthritis combined with acupoint selection based on syndrome differentiation.

Humans ; Root Canal Therapy ; Tooth Apex ; Tooth Root ; injuries

Objective To study the protein fingerprinting of carbapenems resistant and susceptible Acinetobacter baumannii (Ab) strains ,investigate the clinical value of affinity distance in carbapenems resistant strains .Methods A total of 22 carbapenems resistant Ab strains and 18 carbapenems susceptible Ab strains were collected ,and bacterial protein fingerprinting was detected by surface-enhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF-MS) ,differentially expressed proteins was analyzed by Biomarker Wizard 3 .1 .Cluster analysis of differential expressed proteins was conducted on SPSS 19 .0 .Results The protein expression pattern of carbapenems resistant and sensitive Ab strains had significant difference (P< 0 .05) .Cluster anal-ysis showed carbapenems resistance Ab was given priority to with type A ,followed by type B .Conclusion The results of cluster a-nalysis carbapenems resistance of Ab protein fingerprinting could determine the distance of affinity relationship of Ab .It could pro-vide a theoretical basis for the infection and clinical epidemiology of Ab .

Objective To investigate the roles of endoscopic biopsy and third ventriculostomy in the diagnosis and treatment of pineal region tumors in children. Methods Endoscopic biopsy and third ventriculostomy were performed in 9 pediatric patients with pineal region tumors. Results Successful third ventriculostomy, confirmed by MRI, was performed in 9 cases of children with obstructive hydrocephalus. No complications were found in all patients. Conclusion Endoscopic biopsy and third ventriculostomy are effective neuroendoscopic procedures in minimally invasive preferential management of pineal region tumors.

OBJECTIVEGlucosyltransferase-B (GTF-B) of Streptococcus mutans has been implicated as a principal virulent factor in the development of dental caries. The objective was to use recombined plasmid pcDNA-gtfB expressing multiple antigen of glucosyltransferase-B as gene vaccine to immunize rats through different route, and to investigate the immunization effects of immunization routes.

METHODSA total of 18 Wistar rats were divided into 3 groups, including the quadriceps injection group, the intransal irrigation group and the submandibular gland-targeted injection group. The serum IgG and salivary IgA were assayed by using ELISA after pcDNA3-gtfB immunization. The serum IgG and salivary IgA in different groups were compared using statistical one-way ANOVA.

RESULTSCompared these 3 groups, the serum IgG in the quadriceps injection group was much higher than those of other two groups (P < 0.01), while the salivary IgA of the submandibular gland-targeted injection was much higher than those of other two groups (P < 0.01).

CONCLUSIONIt is indicated pcDNA3-gtfB is good candidate for anticarious gene vaccine, and submandibular gland-targeted injection is an effective immunization route for stimulating salivary IgA.

Animals ; Antibodies, Bacterial ; biosynthesis ; Bacterial Vaccines ; administration & dosage ; immunology ; Cloning, Molecular ; Dental Caries ; prevention & control ; Glucosyltransferases ; genetics ; immunology ; Immunization ; Immunoglobulin A, Secretory ; analysis ; Immunoglobulin G ; blood ; Male ; Plasmids ; genetics ; immunology ; Random Allocation ; Rats ; Rats, Wistar ; Recombination, Genetic ; Saliva ; immunology ; Streptococcus mutans ; genetics ; immunology ; Vaccines, DNA ; administration & dosage ; immunology

OBJECTIVEThis study aimed at investigating the transcription and expression of recombined plasmid pcDNA3-gtfB which encoding multiple glucosyltransferase-B antigenic gene, and the feasibility of the pcDNA3-gtfB used as gene vaccine.

METHODSThe pcDNA3-gtfB was transfected into mammalian cell COS-1 with liposome. The total RNA of COS-1 cell transfected by pcDNA3-gtfB was extracted and purified. Using the total RNA as template, the transcription of pcDNA3-gtfB was assayed by reverse transcription polymerase chain reaction (RT-PCR). The expression product of pcDNA3-gtfB was identified with 5% SDS-PAGE, and then assayed using Western-blotting. The expression product of pcDNA3-gtfB was also assayed by using LSAB method, and cell transfected by pcDNA3 as the negative control.

RESULTSIdentified by agarose gel electrophoresis, the target gene fragment had the same molecular size (3.6 kb) as it was predicted, and it indicated that pcDNA-3gtfB was correctly transcribed into mammalian cells. Proved by SDS-PAGE, the molecular weight of the expression product (116-212 kD) was also the same as it was supposed to be. It was also indicated by Western-blotting and LSAB assay that the expression product induced immunizing response.

CONCLUSIONAs gene vaccine, it is importance that the recombined plasmid could be correctly transcribed and expressed in mammalian cells. It was suggested by RT-PCR, LSAB and Western-blotting that recombined plasmid pcDNA3-gtfB could be correctly transcribed and expressed in mammalian cells, and the expression product could induce immunizing response, which support its use as gene vaccine candidates in the development of anticaries vaccines.

Animals ; COS Cells ; Cercopithecus aethiops ; Cloning, Molecular ; Dental Caries ; prevention & control ; Eukaryotic Cells ; metabolism ; Genetic Vectors ; Glucosyltransferases ; genetics ; Plasmids ; genetics ; immunology ; Rabbits ; Recombination, Genetic ; Streptococcus mutans ; genetics ; Transcription, Genetic ; Vaccines, DNA

Objective To study the correlations between genetic polymorphisms of TNF-α as well as IL-6 and susceptibility to colorectal cancer among Chinese Han people in Shandong province.Methods Single nucleotide polymorphisms (SNPs) of TNF-α-238G/A,-308G/A and IL-6-174G/C,-572G/C,-597G/A in 490 patients with colorectal cancer were analyzed by using gene chip.Concentrations of TNF-α and IL-6 in serum samples were measured by ELISA.A case-control study was conducted to analyze the correlations between SNPs of TNF-α-238G/A,-308G/A as well as IL-6-174G/C,-572G/C,-597G/A and susceptibility to colorectal cancer.Chi-square test or t test was used for statistical analysis.Relative risks were estimated based on the values of odds ratio (OR) and 95% confidence interval (95%CI).Results The frequency of TNF-α-308AA in patients with colorectal cancer was significantly higher than that in healthy subjects (x2 =6.15, P<0.05, OR=2.08, 95%CI=1.17-3.71), while the frequency of IL-6-572CC in patients with colorectal cancer was significantly lower than that in healthy subjects (x2 =4.97, P<0.05, OR=0.73, 95%CI=0.55-0.96).The frequency of TNF-α-308AA in patients with colon cancer (OR=2.31, 95%CI=1.17-4.55), tubular adenocarcinoma (OR=2.32, 95%CI=1.28-4.21), high (OR=2.05, 95%CI=1.01-4.15) or moderately differentiated adenocarcinoma (OR=5.88, 95%CI=1.79-19.30) was significantly higher than that in healthy subjects.The levels of serum TNF-α in TNF-α-308AA carriers with colorectal cancer were significantly higher than those in TNF-α-308G carriers with colorectal cancer (t=2.13, P<0.05) as well as those in healthy TNF-α-308AA carriers (t=2.13, P<0.05).The levels of serum IL-6 in colorectal cancer group were significantly higher than those in control group (t=6.74, P<0.001).Conclusion The SNPs of TNF-α-308 and IL-6-572 are associated with the occurrence and development of colorectal cancer in Chinese Han people in Shandong province.

Objective To explore the key points of anaesthetic management of bilateral lung transplantation treating severe idiopathic pulmonary arterial hypertension.Methods Clinical data of 20 cases with severe IPAH treated by bilateral lung transplantation were analyzed retrospectively, 2 males and 18 females, ASA physical status Ⅲ or Ⅳ.The hemodynamic changes were observed at various points (30 min after double lung ventilation, 15 min after ECMO, during one-lung ventilation, 30 min after pulmonary artery block, at the opening of pulmonary artery and at the end of surgery) and pre-and post-operative changes of cardiovascular morphology were analyzed with heart ultrasound.Results Compared with 30 min after double lung ventilation, PaO2 and SVV were significantly increased and PAP, PAWP and PaCO2 were decreased 15 min after extracorporeal membrance oxygenation (ECMO) (P<0.05).PAP and PAWP were significant higher and SVV was lower 30 min after pulmonary artery block than 15 min after ECMO (P<0.05).Opening of pulmonary artery had significantly increased SVV and reduced PAP and PAWP compared with pulmonary artery block (P<0.05).ECMO was removed in 4 cases at end of the surgery.The remaining 16 cases assisted by ECMO were transferred to ICU, 3 cases underwent thoracotomy for exploration and hemostasis 1 day after the operation while 13 cases suffered from different degrees of left heart dysfunction postoperatively, 4 of which had acute heart failure.Of the 4 cases, 2 were treated by right femoral vein-right femoral artery bypass (V-A ECMO bypass) and 2 underwent right femoral vein-right internal jugular vein bypass (V-V ECMO bypass).Moreover, 3 cases performed tracheotomy 5 days, 6 days and 13 days day after the operation, respectively.All the patients were cured and discharged.Their cardiovascular morphology was improved.Conclusion The key successful factors of IPAH treated by bilateral lung transplantation are to improving perioperative heart function, keeping stable hemodynamics during induction of anesthesia and the operation and using ECMO properly and postoperative support.

OBJECTIVE:To study the preventive effect of Lonicera japonica alcohol extract on mice with liver injury based on metabolomics method. METHODS:30 mice were equally randomized into a normal control (isometric normal saline) group,a model(isometric normal saline)group and a group of L. japonica alcohol extract(2 g/kg). The mice were given drugs by ig once a day for 14 consecutive days. On the 8th day of administration,the models were established by giving 0.2% dimethyl sulfoxide (DMN,10 ml/kg)ip once a day for 7 consecutive days. Gas chromatography-mass spectrum(GC-MS)was used to analyze 24 h total ions chromatogram of the urine sample on the 1st,3rd,5th and 7th day of administration of drugs and DMN. The change in endogenic small molecule metabolites in urine was observed. Principal component analysis was employed to explore the change in the metabolite chromatogram and underlying biomarkers in urine. RESULTS:The contour of the chromatogram changed to a largest extent 1 to 5 d after given DMN,but showed an obvious trend towards regression 7 days thereafter. DMN resulted in increase in the contents of 8-phenyl-8-azbicyclo-[4,3,0]non-3-ene-7,9-dione,2-(6-heptynyl)-1,3 dioxolane,bis-(O-methyloxime)-4-ketoglu-cose,and decrease in the contents of malonic acid,2-(4- chlorophenylthiomethoxyl)ethyl,tetrahydro-2-furanacetaldehyde,D-ga-lactose,erythro-pentonic acid and galacturonic acid,in endogenic small molecule metabolites in mouse urine,for which Lonicera japonica alcohol extract can improve that. CONCLUSIONS:Previous administration of L. japonica alcohol extract ig has preven-tive effect to some extent on the physiological and metabolic conditions of mice with liver injury induced by DMN.