Because of the neonatal immune system is immature,particularly in preterm and low birth weight infants,the neonate is prone to some infections.Neonatal sepsis usually has the slight performance and atypical clinical symptoms,which raise the great interest of searching for some better biomarkers.With the development of testing technology,the research of serum inflammation marker has made remarkable progress at home and abroad in recent years,however,the research of umbilical blood inflammation marker is still in the early stage of exploration.Umbilical blood detection have the advantages of early,noninvasive,safe and convenient compare to the traditional serum detection.This paper mainly discusses the application of umbilical blood detection to early onset neonatal sepsis.

2,5-DKG reductase I was purified from cell-free extracts of a recombinant,ER97 by a procedure involving ammonium sulfate precipitation and successive column chromatography on DEAE-Sepharose CL-6B and Phenyl Sepharose CL-4B with 5 fold purification,27 % recovery and 3418 U/mg specific activity.The molecular weight of the enzyme estimated by SDS-PAGE was 34kD.The isoelectric point was estimated to be 6.0 by PAG-IEF.The optimum pH was 7.0 and the optimum temperature was about 40℃.The enzyme can catalyze the stereospecific NADPH-dependent reduction of 25-DKG to 2-KLG.The michaelis-menten constant(Km) for 2,5-DKG and NADPH were 0.29 mmol/L and 14.7 mmol/L respectively.The enzyme is specific for NADPH and 2,5-DKG,1 mmol/L Cu~(2+) or Zn~(2+) could highly inhibited the enzyme activity.EDTA and ?-Mercaptoethanol have no effect on the enzyme activity.

Objective: To analyze the constituents and metabolites of Radix Sa poshnikoviae (RS) in rat plasma and urine by rapid-resolution liquid chromatography-time of flight mass spectrometry (RRLC-TOF/MS), so as to explore the active ingredients and metabolites of RS in vivo. Methods: The separation was performed on a Angilent Zorbax Extend-C14 (5 μm, 250 mm x 4.6 mm id) column, with a methanol-water mobile phase system used for gradient elution. Time-of-flight mass spectrometer (TOF/MS) was applied for qualitative analysis under positive ion mode. Based on the accurate molecular weight of TOF/MS detection and the compound list of RS established previously, the constituents and metabolites of RS in different matrix in vivo were identified. Results: Six constituents of RS were identified in the plasma, sucrose, prim-O-glucosylcimifugin, cimifugin, nodakenetin, 5-O-methylvisamminol, and 3′-O-i-butyrylhammaudol. Eight constituents were identified in the urine, prim-O-glucosylcimifugin, divaricatacid, cimifugin, 4′-O-glucosyl-5-O- methylvisamminol, (3S)-2,2-dimethyl-3, 5-dihydroxy-8-hydroxymethyl-3, 4-dihydro-2H, 6H-benzo-[1, 2-b: 5, 4-b′] dipyran-6-one, 5-O-methylvisamminol, see-O-β-D-glucosylhammaudol, and wogonin. Two metabolites were identified in the urine, glucuronide of cimifujin and an isomer of it. Conclusion: The present method is reliable and effective for identifying compounds of RS in vivo, and it can provide a reference and evidence for the further pharmacodynamics experiments.

Diagnostic Errors ; Dyspnea ; diagnosis ; Female ; Humans ; Infant ; Male

Humans ; Tuberculosis, Hepatic

BACKGROUND: Clusterin has many biological functions, especially the great protection effects on histiocytes in pathological conditions. It will be helpful to discuss the expression of clusterin in the spinal cord injury tissue to further identify the mechanism of secondary spinal cord injury and to provide possible treatments.OBJECTIVE: To observe the expression of clusterin in acute spinal cord injury tissue.DESIGN: Randomized controlled animal study.SETTING: Department of Orthopaedics, First Affiliated Hospital, China Medical University.MATERIALS: The experiment was performed in Experimental Animal Department, China Medical University from January 2003 to January 2006.A total of 65 adult healthy SD rats of 250-300 g provided by Experimental Animal Department, China Medical University were selected. METHODS: All the rat models by modified Allen assay for acute spinal cord injury were randomized into injury group, sham operation group and normal control group with 30, 30 and 5 rats in each group, respectively.The rat injury models in dorsal spinal cord were prepared by modified Allen assay: the target injury site was T10 segment; the sham operation group was given T10 total laminectomy. The normal control group received no operation. Rats in the injury group and sham operation group were killed at hour 12, days 1, 3, 7, 14 and 21 after spinal injury and operation with 5 rats at each time point, respectively. Frozen sections of the injury part were made at different time point after injury. Degeneration and necrosis of spinal cord injury tissues were observed with hematoxylin-eosin (HE) staining. Deposition and disposition of positive reactants of clusterin were observed with clusterin immunohistochemical staining. Average gray value of positive reactants of clusterin was detected with semi-quantitative image analysis (went with the intensity of clusterin immunoreaction in inverse ratio).MAIN OUTCOME MEASURES: ①Degeneration and necrosis as well as positive expression of clusterin of spinal cord injury tissues of rats in each group. ②Average gray value of clusterin positive reactants in spinal cord injury tissues of rats in each group.RESULTS: A total of 65 rats were involved in the result analysis, without dropout. ①In the injury group, positive expression of clusterin began to increase at day 1 after injury, reached peak at about day 7, declined gradually at day 14 and tended to be stable at day 21 after injury. This dynamic course of change was along with the prolongation of time. The expression of clusterin appeared in the sham operation group and normal control group at each time point, and the expression was stable. There was no dynamic change with the prolongation of time. ②In the injury group average gray value of positive reactants of clusterin was significantly lower at days 1, 3,7, 14 and 21 as compared with that in the sham operation group and normal control group (t=6.33-15.57, P ＜ 0.01 ). There was no significant difference in average gray value of positive reactants of clusterin at each time point in the sham operation group as compared with the normal control group (P ＞ 0.05).CONCLUSION: The expression of clusterin increases greatly in acute spinal cord injury tissues, and has dynamic change, which is the same with spinal cord injury.

Laparoscope has been widely recognized as a treatment of distal gastric cancer.Totally laparoscopic distal gastrectomy and laparoscopy-assisted distal gastrectomy are two main types of laparoscopic distal gastrectomy.Apart from a smaller incision,some other advantages which totally laparoscopic distal gastrectomy has is the key point for further study.The thesis aims to compare totally laparoscopic distal gastrectomy to laparoscopy-assisted distal gastrectomy,and to analyze the characteristic in the aspect of operation time,the degree of pain,postoperative complications and the time of gastrointestinal recovery via collecting a great quantity of literatures.

[Summary] Glucagon-like peptide-1 ( GLP-1 ) as a new treatment of type 2 diabetes, not only has hypoglycemic effect, but also plays an important role in the regulation of lipid metabolism. GLP-1 plays a unique role in regulating lipid metabolism via lipid absorption and transport, fat formation and decomposition, hepatic lipid metabolism, and cholesterol transport.

BACKGROUND:In recent years, with the development of China Marrow Donor Program and the improvement of human leukocyte antigen (HLA) typing technique, novel aleles of human leukocyte antigen have been discovered constantly in China. OBJECTIVE:To identify and confirm a novel HLA alele in a Chinese individual. METHODS: A new HLA alele was found during routine human leukocyte antigen genotyping by PCR-sequence specific oligonucleotide probes and sequencing-based typing. RESULTS AND CONCLUSION:The HLA-B locus hybridization probe reaction patterns of this sample did not match with any known HLA-B aleles or alelic combinations. Exons 2, 3 were sequenced in both directions using HLA-B sequence primer and group-specific sequencing primer. The obtained sequence had 2nts change from B*07:02:01 at nt 226 and nt 228 where A->G (codon 76 ATA->GTG) and resulting in a coding change, 76 isoleucine (I) was changed to valine (V). This nucleotide sequence has been submitted to the GenBank nucleotide sequence database and it is available under the accession number HM989017. A novel HLA alele, HLA-B*07:110, was identified, and was named officialy by the WHO Nomenclature Committee.

Objective To investigate the effect of lipoteichoic acid of bifidobacterium (BLTA) on the expressions of Fas/FasL in bearing melanoma B16 cancer mice. Methods Forty C57BL/6 mice were randomly divided into 4 groups (n=10),normal saline group (NS group),low-dose BLTA group (50 mg/L),middle-dose BLTA group (100 mg/L),and high-dose BLTA group (150 mg/L). Melanoma B16 cells (0.2 ml 5?109/L) were subcutaneously injected into the mice of the later 3 groups,and then,0.2 ml BLTA at corresponding doses was injected subcutaneously at the sites around the mass once a day for 10 d when the tumor (at least 2 mm?2 mm) was palpable. The NS group was given normal saline at same volume as in BLTA group. The changes of the killing activity of CTL was examined by MTT assay. The expression of the tumor-infiltrating CD4+ and CD8+ lymphocytes in tumor tissue were detected by immunohistochemistry. RT-PCR was used to detect the mRNA expression variance of the Fas and FasL in tumor and spleen tissue. The protein expression of Fas,FasL in tumor tissue and lymphocytes of spleen were detected by immunohistochemistry and Western blotting. Results Compared with the control group,BLTA significantly improved the CTL killing activity (P0.05). Conclusion BLTA enhances the killing activity of CTL by regulating Fas/FasL system,and thus,promotes apoptosis of tumor cells to suppress tumor immune escape in tumor-bearing mice,thereby it exerts anti-tumor effect further.