Bacterial Infections ; epidemiology ; etiology ; Cerebral Hemorrhage ; diagnosis ; etiology ; therapy ; Craniocerebral Trauma ; diagnosis ; etiology ; therapy ; Female ; Fetal Membranes, Premature Rupture ; Gestational Age ; Humans ; Infant, Newborn ; Infant, Premature ; Infant, Premature, Diseases ; diagnosis ; etiology ; therapy ; Pregnancy ; Risk Factors ; Tomography, X-Ray Computed

Objective:To evaluate the efficacy and safety of continuous intrathecal morphine infusion system for patients with refracto-ry cancer pain. Methods:Seventeen patients with refractory cancer pain were implanted with intrathecal catheters and connected with a continuous external electronic patient-controlled analgesia (PCA) pump for intrathecal morphine analgesia. Visual analogue scales (VAS) score, the dose of routine opioids, and the score for quality of life before and after intrathecal analgesia were recorded. Adverse reactions were observed. Results:After the application of continuous intrathecal morphine analgesia, the VAS score of pain was 2.9±1.8, which is lower than 7.2±2.5 before intrathecal analgesia (P<0.001). Moreover, the dose of routine opioids (i.e., equianal-gesic dose of morphine) was 42.1 ± 7.5 mg/day, which is significantly lower than 282.9 ± 95.5 mg/day before intrathecal analgesia (P=0.004). The scores of general activity, mood, and sleep after intrathecal analgesia were significantly lower than those before intrathe-cal analgesia (P<0.05). However, the analgesic satisfaction of patients considerably increased after intrathecal analgesia (P<0.001). Ad-verse reactions included withdrawal syndrome, headache, urinary retention, and intrathecal infection. Conclusion:The continuous in-trathecal morphine infusion with PCA is effective and safe on analgesic treatment for patients with refractory cancer pain.

Objective:To analyze a novel antigenic determinant of Homo sapiens CMTM1-v17 protein and prepare polyclonal antibody.Methods:By means of DNA recombination method, the C-terminal(The coding sequences of 118-149 residues) of CMTM1-v17 gene was inserted into pGEX-4T-2 vector. The recombinant plasmid was transformed into E.coli XL-1 Blue to express the fusion protein of GST/CMTM1-v17. The GST tag of the purified fusion protein was removed by enzymatic cleavage with thrombin. The polyclonal anti-CMTM1-v17 antibody were prepared by immunizing rabbits with the purified protein. Highly-specific, polyclonal anti-CMTM1-v17 antibodies was purified by affinity chromatographic column matrix coupled with antigen. The specificity of the anti-CMTM1-v17 antibody was identified by Western blot and immunohistochemistry.Results:The polyclonal antibody showed specific response to CMTM1-v17 by Western blot analysis and immunohistochemistry. These results suggested that the polyclonal antibody can be used for further studies of CMTM1-v17 function.Conclusion:A polyclonal anti-CMTM1-v17 antibody has been synthesized successfully.

Objective To investigate the change of serum vascular endothelial growth factor (VEGF) in cerebral infarction before and af-ter rehabilitation. Methods Forty-eight patients with first cerebral infarction were enrolled from June, 2014 to August, 2016 in Beijing Bo'ai Hospital. Level of serum VEGF was measured by enzyme-linked immunosorbent assay (ELISA) before and six weeks after rehabilitation. The level of serum VEGF of 33 normal subjects was compared with the patients'. Results The level of serum VEGF was higher in the pa-tients group than in the control group before and six weeks after rehabilitation (t>2.540, P<0.05). The level of VEGF was higher in the large area infarction group (>4 cm) than in the small area infarction group (≤4 cm) (t=4.436, P<0.05), and was higher in the short course (less than one month) infarction group than in the long course (more than one month) group (t=2.316, P<0.05). Conclusion VEGF can be main-tained in high level after rehabilitation.

Animals ; Antibodies, Monoclonal ; pharmacokinetics ; Iodine Radioisotopes ; pharmacokinetics ; Leukocyte Common Antigens ; immunology ; Male ; Mice ; Radiation Monitoring ; methods ; Rats ; Tissue Distribution

Objective:To explore whether spontaneous sene-scence widely existed in malignant tumor cells. Methods:Sene-scence-associated beta-galactosidase (SA-β-Gal) staining kit was used to detect the activity of SA-β-Gal in ten different malignant tumor cell lines before and after serum deprivation. Results:SA-β-Gal was expressed in some cells of 10 malignant tumor cell lines during exponential growth phase without any treatment. However, the percentage of senescent cells was significantly different among them, the lowest expression was observed in HeLa cell line (0.65%), and the highest expression was seen in HepG2 cell line (3.69 %, F=13.006, P= 0.000). Furthermore, not all the SA-β-Gal positive aging cells were polyploid cells. After 24-h serum deprivation, the number of SA-β-Gal positive cells was significantly increased (P=0.001). Conclusion:These findings indicate that immortal malignant tumor cell lines could undergo spontaneous senescence but the level was different between various cell lines. Short-term serum de-privation significantly increased the percentage of aging cells indicating that serum deprivation-induced cell senescence may be a rapid, easy, and effective way for anti-tumor therapy.

Objective To investigate the dose-effect relationship of mRNA level of sensitive mitochondrial genes in human lymphoblastoid cells induced by ionizing radiation.Methods Seven human sensitive genes,including ND3,Cyt b,COX Ⅰ,COX Ⅱ,COX Ⅲ,ATPase6 and ATPase8 were chosen.Changes of mRNA level of these genes were detected by RT-PCR and Real-Time PCR at 24 h after irradiation in human lymphoblastoid cells,which were exposed to 0 - 15 Gy of 60 Co γ-rays.Results The expression of these 7 genes at mRNA level was up-regulated 24 h after irradiation in human lymphoblastoid cells.The level of gene expression of COX Ⅰ,which belongs to complex Ⅳ of mitochondrial respiratory chain,was most obvious,and the peak occurred after irradiation of 8 Gy,which was 13 times of the control group.A good dose-effect relationship was showed for COX Ⅲ gene expression at dose range of 3 -10 Gy as well as 3 - 15 Gy for other 3 genes including ND3,ATPase6 and ATPase8.Conclusions Gene expression levels of COX Ⅲ,ND3,ATPase6 and ATPase8 24h post-irradiation at certain irradiation dose range could be used for radiation damage biomarkers.

Objective To id scuss the role and safety of fiberoptic bronchoscopy for diagnosing and treating respiratory dsi ease in PICU.Methods A total of 95 eil gible children with respri atory diseases admi-tted ni PICU of Hu′nan Prvo inec Children′s Hospital were enroll ed in this retrospectvi e study from January 2013t o December 2013, and the efficacy and complications of fiberoptic bronchoscopy were assessed.Results A total of 95 children underwented bronchoscopy 112 timest, he most common of microscopic examination resutl s was tracheal bronchitis ( 62.1%) , followed by congenital airway abnormality ( 21.1%); 58 times (56.9%) showed becteria positive in 102 times lavage and sputum culture results, including 16 times (27.6%) of Klebsiella pneumoniae bacteria,12 times(20.7%) of Acinetobacter baumannii.After under-wenting bronchoscopy and lavage wash,blood gas analysis of pH value,PaO2 ,PaCO2 ,SaO2 had significant improvement than before( P<0.05 ) , respiratory rate had improved than before ( P<0.05 ) , little effect in heart rate(P>0.05).The inrt aopear tive and postoperative transient comlp ications were obserev d in 38 times (33.9%).Conclusion The appil cation of fiberoptic bronchoscopy for diagnosing and ter ating disease in PICU has a cetr ia n value, its vo erall safety is reliable.

Objective:To prove the effect of PADI-4 gene in the development of rheumatoid arthritis.Methods:Four SiRNA sequences were designed for PADI-4 gene,and the SiRNAs were cloned into blank pSiRNA-hH1neo G2 vectors.The vectors were transformed into GT116 E.coli competent cells.By white-blue selection system,the right vectors were gotten.After transfection into HL-60 cells,the cells were collected on 3,5,7,10 and 14 day,the levels of PADI-4 mRNA were detected by Real-time PCR.Results:Digestion by Acc 65Ⅰand Hind Ⅲ,the recombinant expressive vector of RNA interference was obtained successfully.The PADI-4 mRNA generated by the cells transfected with the vector of SiRNAs were reduced,and the level was not change in normal cells.Conclusion:The recombinant expressive vector of RNA interference is obtained successfully and the recombinant expressive vector can affect expression of PADI-4 gene in HL-60 cells.

Objective:To set up an effective and simple purification method to obtain highly purified prokaryotic protein of PDCD5 and study its stability. Methods:Recombinant PDCD5 protein expressed in E. coli was accumulated as an inclusion body. After washing, the inclusion body was denatured, renatured, digested with thrombine and then purified by two steps of chromatography. The purity of the products was analyzed by capillary electrophoresis and the stability was identified by SDS-PAGE. Results:Capillary electrophoresis showed that the purity of protein was 100%, and molecular weight was 15 800 with pI 5.9. Further bioactivity assay indicated that the purified PDCD5 could enhance the apoptosis of HL 60 cells withdrawing cytokine, which was in a dose dependent manner. Stability analysis showed that the PDCD5 protein was sensitive to temperature and easy to degrade at 4 ℃ and 25 ℃. However, it was relatively stable at -20 ℃ or lyophilized. Conclusion:Highly purified and stable recombinant PDCD5 protein was obtained, which lays a foundation for the functional study and application investigation of PDCD5 .