Objective To evaluate the immune effect of combined immunization for newborns of pregnant women with HBeAg-negative chronic hepatitis B.Methods Three hundred and seventy-five cases of children given birth by 326 cases of HBeAg-negative HBV-infected pregnant women were enrolled in this study.The usage of hepatitis B immunoglobulin (HBIG) during pregnancy,mode of delivery,the child's immunization measures after the birth and feeding patterns were recorded,and compared the HBV markers.Results All of 375 cases of children were given HBIG after delivery for 12 h,352 (93.9％) cases of children were given the first time of hepatitis B vaccines(HepB) after delivery for 24 h,and 23 (6.1％) cases of children were delayed because of all kinds of neonatal disease,but they were given vaccination after delivery for 7-42 d.Two hundred and thirty-six cases of cord blood were detected for HBV markers,39 (16.5％) cases were HBsAg positive,197 (83.5％) cases were HBsAg negative.The positive rate of anti-HBs and the meta-concentration of anti-HBs in the child with HBsAg positive and HBsAg negative of cord blood had no significant difference (P ＞ 0.05).The positive rate of anti-HBs of children whose mothers used HBIG or not during pregnancy were 63.5％ (47/74),59.8％(180/301).The positive rate of anti-HBs in cesarean section group and the nature delivery group were 65.2％ (103/158),57.1％ (124/217).The positive rate of anti-HBs in breast feeding,mixed feeding and artificial feeding group were 62.0％ (119/192),58.9％ (63/107),59.2％(45/76).There was no significant difference(P ＞ 0.05).Conclusions After normal HBIG combined HepB,different mode of delivery,feeding,third trimester whether given HBIG have no effect on the newborns of pregnant women with HBeAg-negative chronic hepatitis B.

Objective To explore the rising degree of hemodiastase,lipase and the relationship with acute pancreatitis with diabetic ketoacidosis(DKA).Methods 36 diabetic ketoacidosis patients with increased trypsin were divided into non pancreatitis group(20 cases)and pancreatitis group(16 cases)based on the results of abdominal CT.And the blood amylase,urine amylase,blood fat enzyme levels of the two groups were measured and compard.Results The blood amylase of the pancreatitis group was(275.0±10.5)U/L,and that of pancreatitis group was(615.4±17.8)U/L,the difference between two groups was obvious(P＜0.01);The blood lipase of pancreatitis group was(2125.0±50.4)U/L,and that of pancreatitis group was(2021.0±19.8)U/L,there was no significant difference between the two groups(P＞0.05).The blood amylase and abdominal CT results compliance high.Conclusion Pure DKA can cause diabetes pancreatic enzyme increases,and in the diagnosis of acute pancreatitis,the specificity of blood amylase is high.

Objective To determine the effect of Vibrio vulnificus cytolysin (VVC) inducing ap-optosis in human umbilical vein endothelial cell(HUVEC) and its possible mechanism. Methods The en-tire vvhA gene that encoding VVC from V. vulnificus strain GTC333 was amplified by PCR and sequenced af-ter T-A cloning. E. coli BL21DE3pET-42a-vvhA, a prokaryotic expression system of the vvhA gene, was then con-structed. Ni-NTA affinity chromatography was applied to purify the target recombinant protein rVVC, and SDS-PAGE plus Bio-Rad Agarose Image Analyzor were used to measure the output of rVVC and to determine the purity of rVVC extract. The activity of rVVC dissolving rabbit erythrocytes was detected by hemolysis test. DPNH chromotometry and TphBNa chromotometry were performed to examine the contents of LDH and K+ in the supernatants of rVVC-treated HUVEC cultures, respectively. The effect of rVVC inducing apepto-sis of HUVEC was detected by flow cytometry, rVVC was labeled with FITC and the location of FITC-labe-ling rVVC in HUVEC was observed by laser canfocal microscopy. Results The cloned whA gene had 96.09% and 98.26% similarities of nucleotide and amino acid sequences compared to the corresponding se-quences in GenBank. rVVC, with a dosage of 1 μg/ml, could dissolve rabbit erythrocytes (P<0.01). 10 μg/ml rVVC was able to promote the increases of K+ content (P<0.01) but no change of LDH content could be found in the cell supernatants. HUVEC was apoptotic after the cell was treated with 1～100 μg/ml of rVVC for 2 h. In the 5～240 min duration of co-incubation of FITC-labeling rVVC and HUVEC, the rV-VC gradually moved from surface to inner side of the membrane and then entered the cytoplasms. When FITC-labeling rVVC treated HUVEC for 30 min, most of the rVVC was found to be intracellular location. Conclusion rVVC has cytolytic activity. VVC has an ability to enter HUVEC and causes injury of HUVEC via inducing apoptosis, which may be the major pathogenic mechanism of VVC.

ObjectiveTo investigate the clinical efficacy of the fixation of elderly fracture of proximal humerus with locking compression plate(LCP) by mini-incision approach from lateral shoulder.Methods31 elderly patients suffered from elderly fracture of proximal humerus were treated with locking compression plate(LCP) by mini-incision approach from lateral shoulder, male 13 cases, female 18 cases; aged from 56 to 72, average 62-8 years old; fractures according to Neer classification: type Ⅱ(8 cases), type Ⅲ (19 cases), type Ⅳ (4 cases). Cause of injuries: traffic accident (9 cases), falling (20 cases), other injuries(2 cases).ResultsThe patients were followed up 6 to 36 months, an average of about 24 months. Fracture healing time was 2-2 ～ 6-4 months, on average 3-7 months; No wound infection occurred. Post-operative functional score (Neer score) revealed: excellent(18 cases), good (11 cases), fair (2 cases), the ratio of excellent(18 cases), good (11 cases) was 93-5%. ConclusionFixation of elderly fracture of proximal humerus with locking compression plate(LCP) by minimally invasive approach from lateral shoulder is a safe, reliable and minimally invasive procedure with good reduction and stable fixation. Early post-operative functional exercise may be permitted for preventing shoulder joint adhesion.

Brain-computer interface (BCI) system is a system that achieves communication and control among humans and computers and other electronic equipment with the electroencephalogram (EEG) signals. This paper describes the working theory of the wireless smart home system based on the BCI technology. We started to get the steady-state visual evoked potential (SSVEP) using the single chip microcomputer and the visual stimulation which composed by LED lamp to stimulate human eyes. Then, through building the power spectral transformation on the LabVIEW platform, we processed timely those EEG signals under different frequency stimulation so as to transfer them to different instructions. Those instructions could be received by the wireless transceiver equipment to control the household appliances and to achieve the intelligent control towards the specified devices. The experimental results showed that the correct rate for the 10 subjects reached 100%, and the control time of average single device was 4 seconds, thus this design could totally achieve the original purpose of smart home system.
Brain-Computer Interfaces ; Electroencephalography ; Evoked Potentials, Visual ; Humans ; Microcomputers ; Wireless Technology

10.3969/j.issn.2095-4344.2013.26.005

Objective To analyse the change of DNA methylation with 5-Azac injection in acute graft-versus-host dis- ease (aGVHD) mouse model, which received allogeneic bone marrow transplantation, and explore the immunomodulatory ef-fects of 5-Azac. Methods Male C57BL/6 (H-2b)and female BALB/c (H-2d) mice were selected as donor and recipient of complete allotransplantation. BABL/c mice were divided into two groups, transplantation control group and 5-Azac experi-mental group. At 1-7, 14, 21 and 28-day after transplantion, 5-Azac 0.25 mg/kg (0.3 mL/time) was injected by tail vein in experimental group, while the control group were injected with sterile water 0.3 mL/time. Peripheral blood DNA samples were collected from three control mice and three experimental mice, then mixed with equal amount respectively. The MeDIP-seq method was selected to detect methylation changes in mice, and the differential DNA methylation in the biological path-ways was analyzed. Results The survival time was prolonged, and the rejection reaction was decreased in 5-Azac experi-mental group, which suggested immune hyporesponsiveness post aGVHD. The MeDIP-seq result showed that 369 different DNA methylation located in the promoter regions, including 239 up-regulated genes and 130 down-regulated genes. There were 184 differential DNA methylation genes located in the exon regions, including 113 up-regulated genes and 71 down-regulated genes. Differential DNA methylation genes involved in 10 immunological signaling pathways, respectively. Among them, TGF-β, GSK-3β, SYK, PI3K, NFAT, CD28 andα4β7 were closely related to the development of aGVHD. Conclu-sion 5-Azac can effectively induce immune hyporesponsiveness post aGVHD by changing the gene methylation status.

Objective To investigate the clinical application significance of flow cytofluroometric(FCM ) antibiotic susceptibility test for A .baumannii in vitro .Methods The sensitivity to Ampicillin/Sulbactam ,Levofloxacin ,Meropenem ,Cefotaxime of an Esch‐erichia coli standard strain and 66 isolates of A .baumannii were tested with FCM by using propidium iodide as a fluorescent probe . The survival rates of the bacteria in the culture after treatment with different dosages of the antibiotics were determined according to the fluorescence strength .The MIC value of the antibiotics against the 66 strains were judged with FCM ,compared with microdi‐lution and VITEK methods .Results The antibiotic resistant strains number of sultamicillin ,levofloxacin ,meropenem and cefo‐taxime sodium were 35 ,30 ,13 and 38 respectively in flow cytofluorometric antibiotic sensitivity test(FCST) of 66 strains of A .bau‐mannii .There was no significant difference(P>0 .05) compared with the antibiotic susceptibility results by the methods of VITEK instrument and microdilution by measuring with χ2 test respectively .Conclusion The established method of FCST for A .baumannii is suitable for dectecting bacterial drug‐sensitivity ,which is more rapid ,accurate and objective .

Objective To evaluate the clinical efficacy of Clostridium butyricum tablets in treatment of diarrhea in patients with hepatitis B-related liver cirrhosis.Methods Eighty-seven patients with hepatitis B-related liver cirrhosis and diarrhea were collected from Pujiang People' s Hospital in Zhejiang province during January 2011 and May 2013.According to random number table,patients were divided into Clostridium butyricum treated group (n =44) and control group (n =43).Both groups were given antiviral,liver support,jaundice-relieving and fluid infusion treatments,while patients in Clostridium butyricum group were given Clostridium butyricum tablets (2 tables per time,3 tables per day for 4 weeks) additionally.Diarrhea remission time,improvements in liver function and the complications were observed.Differences in measurement data were compared with t test,and enumeration data were compared with x2 test or rank-sum test.Results The total effective rate in Clostridium butyricum group was 95.45％ (42/44),while that in control group was 74.4％ (32/43) (Z =2.82,P ＜ 0.05).After 4 weeks of treatment,the improvements of alanine aminotransferase (ALT),aspartate transaminase (AST),total bilirubin (TBil),albumin (Alb) and Child-Pugh (CTP) score in Clostridium butyricum group were more marked than those in control group (t =2.13,2.57,4.83,5.93 and 3.30,P ＜ 0.01).Hepatic encephalopathy occurred in 2 patients in control group and none in Clostridium buayricum group.Conclusion Clostridium butyricum has significant curative effect on diarrhea in patients with hepatitis B-related liver cirrhosis,and it can also improve liver function and reduce the incidence of hepatic encephalopathy.

Objective To further research the urinary monitoring of the maternal thyroid functional status ,the levels of urine thyroid hormones were analyzed during pregnancy .Methods This study recruited 30 cases of healthy pregnant women at 9-12 ges-tational weeks .Their random urine specimens were collected every four weeks until delivery .The concentrations of urine thyrotro-pin(uTSH) ,urine free triiodothyronine(uFT3) and urine free tetraiodothyronine(uFT4) were detected by electrochemical lumines-cence immunoassay(ECLIA) .The urine retinol binding protein(uRBP) was detected by enzyme immunoassay (EIA) .After correc-ted by uRBP ,the statistical analysis was done to analyze the variation of the ratio of uTSH and uRBP (uTSH/uRBP) ,the ratio of uFT3 and uRBP(uFT3/uRBP)and the ratio of uFT4 and uRBP(uFT4/uRBP)during pregnancy .Results The median levels of u-rine thyroid hormone parameters were obtained from the healthy pregnant women every four weeks and were compared among dif-ferent stages .The difference of uFT3/uRBP and uFT4/uRBP was statistically significant (F= 6 .222 ,P< 0 .05 ;F= 5 .078 ,P<0 .05) ,and the levels of them varied linearity during pregnancy (F=27 .480 ,P<0 .05 ;F=23 .959 ,P<0 .05) .The difference of uT-SH/uRBP had no statistical significance(F=2 .731 ,P=0 .054) .Conclusion After corrected by uRBP ,the levels of uFT3 and uFT4 of healthy pregnant women decreased linearity among different gestational stages ,and the levels of uTSH had no noticeable change .