Angioplasty, Balloon, Coronary ; Humans ; Percutaneous Coronary Intervention ; methods ; Tungsten

BACKGROUND:Chronic hepatitis B virus infection can impact the biological characteristics of bone marrow mesenchymal stem cel s. Adipose-derived mesenchymal stem cel s have gained more and more attention due to their high safety, little invasiveness, easy purification and rapid proliferation. OBJECTIVE:To establish the isolation and culture method of adipose-derived mesenchymal stem cel s from patients with hepatitis B virus infection in vitro, and to observe the biological characteristics of cel s. METHODS:Adipose-derived mesenchymal stem cel s were isolated from the subcutaneous fat of hepatitis B virus infection patients by col agenase digestion and adherent method. Growth curve of adipose-derived mesenchymal stem cel s were detected by MTT method and cel phenotypes were detected by flow cytometry. The adipogenic and osteogenic differentiation potential of adipose-derived mesenchymal stem cel s were detected in vitro. RESULTS AND CONCLUSION:(1) Adipose-derived mesenchymal stem cel s from 10 patients with hepatitis B virus infection were al isolated and cultured successful y. The primary passage time of adipose-derived mesenchymal stem cel s was (8.3±1.2) days. The growth curve of cel s was“S”shaped. Cel s came into a logarithmic phase at days 3-4, and came into platform at day 7. (3) Passage 3 adipose-derived mesenchymal stem cel s highly expressed CD29, CD166, HLA-ABC and CD44, but did not express or lowly expressed CD34 and HLA-DR. (3) Adipose-derived mesenchymal stem cel s differentiated into adipocytes after adipogenic induction, and differentiated cel s were positive for oil red O staining;after osteogenic induction, adipose-derived mesenchymal stem cel s differentiated into osteoblasts that were positive for alkaline phosphatase staining. These findings indicate that the col agenase digestion and adherent method can be used to effectively isolate adipose-derived mesenchymal stem cel s from patients with hepatitis B virus infection, and the cel proliferation is rapid so that a large number of cel s can be obtained in the short term.

Objective To compare the number of endothelial progenitor cells (EPCs) from peripheral blood in patients with acute myocardial infarction of young man and healthy man.Methods Eighteen young men (18 ～50 years old) with acute myocardial infarction (AMI) who were admitted at the First Affiliated Hospital of Dalian Medical University from June 2010 to April 2011 in young man were enrolled,aged (65 ～ 85 years old) men with acute myocardial infarction in 18 cases,within 24 hours of onset collected blood 2 ml.Ten cases of healthy young men (30 ～50 years old) were used as control group,fasting venous blood 2 ml.A volume (400 μl) of blood was taken to red blood cell lysis buffer hemolysis labeled with vascular endothelial growth factor (VEGF),CD34,and CD133 antibodies,and then analyzed with flow cytometry.Results The number of EPCs in peripheral blood was measured in young male AMI group.The number of EPCs in peripheral blood was (0.58 ±0.83)％ in older men.The number of EPCs in peripheral blood of AMI group was (0.04 ± 0.03) ％.For healthy controls,the number of EPCs was (0.02 ± 0.02)％.The number of EPCs was significantly higher in AMI patients compared to control group (P ＜ 0.05).However,for AMI group,the increased number of EPCs in young men was significantly greater than young female (P ＜0.01).Conclusions The number of EPCs in peripheral blood in young man AMI patients is significantly increased within 24 hours.

0 05) Conclusion The COMT G1947→A gene polymorphism is not associated with the generation and the severity of PIH The mutation genotype does not increase the risk of PIH

ve To determine the most approprite hypoxic concentration and duration for prenatal hypoxic adaptation animal experiment by exposing pregnant rats to the hypoxic air of different oxygen concentration.Methods Full-term pregnant rats( gestation time 22 days) were placed in an airtight cabin specially designed for hypoxic adaptation experiment. The rats were divided into 7 groups. The Q2 concentration in the airtight cabin was decreased from 21% (group Ⅰ as control) to 18% (group Ⅱ), 17% (group Ⅲ), 16% (group Ⅳ), 15% (group Ⅴ), 14% (group Ⅵ) and 13% (group Ⅶ) respectively. The animals were exposed to short duration of hypoxic air twice with a break of 5min breathing fresh air. The duration of the first hypoxic episode lasted 10 min (group Ⅰ ) , 5 min (group Ⅱ), 7.5min (group Ⅲ), 9.83 min (group Ⅳ), 11.5 min (group Ⅴ), 13.17 min (group Ⅵ) and 14 min (group Ⅶ) respectively. The second hypoxic episode lasted 10min, 9.33 min, 11 min, 15.17 min, 13.33 min, 17 min and 18 min respectively. Ten newborn rats (1 day after birth) randomly selected from each group were placed in a 100ml airtight bottle and the duration from the start to the time when the newborn rat stopped breathing was recorded as hypoxia surviving time. Another 10 newborn rats randomly selected from each group were decapitated and brain was removed for light and electron microscopic examination to determine the degree of neuronal damages. Results In group Ⅰ-Ⅴ the newborn rats were normal (pink skin color and good extremity movement) . In group VI 10/55 (18%) newborn rats were cyanotic with diminished extremity movement, the others were normal. In group VIII 11/52(21% ) newborn rats died, 14/ 52(27%) were cyanotic with diminished extremity movement. Neuronal damages could be seen in cyanoticnewborn rats including decreased number, swelling, apoptosis of neurons and expanded mitochondria. The hypoxia surviving time was significantly longer in group Ⅳ, Ⅴ and Ⅵ than that in control group. Conclusions Hypoxic air containing 15% O2 is appropriate for animal experiment of prenatal hypoxic adaptation. It is better to divide prenatal hypoxia into two episodes lasting 11.5 min and 13.33 min with a break of 5 min between them when animals breathe fresh air.

Objective To study the effect of using humane nursing among out-patients in transfusion room. Methods 4 500 adult patients with transfusion were selected as experiment group, and selected other 4 000 ones as control group. Humane nursing was performed in the experiment group, while traditional nursing was performed in the control group. The patients' satisfactory rates in these two groups were collected by questionnaires and compared with each other. Results The satisfactory rate in experiment group and control group were 99.4% and 83.3% respectively; the health education cover rate in these two groups were 100.0% and 93.7% respectively; the understanding rate were 81.8% and 72.3% respectively. All the rates what have mentioned above have significant differences between two groups (P

Objective:To evaluate the effect of the plasma cyclic nucleotide in patients with pregnancy-in-duced hypertension. Methods :To observe the level of the plasma cAMP by radio competitive protein bind-ing assay and level of the p lasma cGMP by radioimmunoassay (RIA). Results:The contents of the plasmacAMP and cGMP were significantly higher in PIH group than those in the controls. Plasma cAMP showedthe negative correlation to postpartum MAP. Conclusion:cAMP and cGMP had synergy on antagonizingthe contraction evoked by Ca2+. This was an effective compensatory protective mechanism of PIH.

Methanotrophs could degrade methane and various chlorinated hydrocarbons. The analysis on methane monooxygenase gene cluster sequence would help to understand its catalytic mechanism and enhance the application in pollutants biodegradation. The methanotrophs was enriched and isolated with methane as the sole carbon source in the nitrate mineral salt medium. Then, five chlorinated hydrocarbons were selected as cometabolic substrates to study the biodegradation. The phylogenetic tree of 16S rDNA using MEGE5.05 software was constructed to identify the methanotroph strain. The pmoCAB gene cluster encoding particulate methane monooxygenase (pMMO) was amplified by semi-nested PCR in segments. ExPASy was performed to analyze theoretical molecular weight of the three pMMO subunits. As a result, a strain of methanotroph was isolated. The phylogenetic analysis indicated that the strain belongs to a species of Methylocystis, and it was named as Methylocystis sp. JTC3. The degradation rate of trichloroethylene (TCE) reached 93.79% when its initial concentration was 15.64 μmol/L after 5 days. We obtained the pmoCAB gene cluster of 3 227 bp including pmoC gene of 771 bp, pmoA gene of 759 bp, pmoB gene of 1 260 bp and two noncoding sequences in the middle by semi-nested PCR, T-A cloning and sequencing. The theoretical molecular weight of their corresponding gamma, beta and alpha subunit were 29.1 kDa, 28.6 kDa and 45.6 kDa respectively analyzed using ExPASy tool. The pmoCAB gene cluster of JTC3 was highly identical with that of Methylocystis sp. strain M analyzed by Blast, and pmoA sequences is more conservative than pmoC and pmoB. Finally, Methylocystis sp. JTC3 could degrade TCE efficiently. And the detailed analysis of pmoCAB from Methylocystis sp. JTC3 laid a solid foundation to further study its active sites features and its selectivity to chlorinated hydrocarbon.
Methylocystaceae ; classification ; metabolism ; Multigene Family ; Oxygenases ; genetics ; Phylogeny ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S ; genetics ; Sequence Analysis, DNA ; Trichloroethylene ; metabolism

Objective To monitor the resistance of Streptococcus pneumoniae following the 2004 in Qingdao area, and to provide a reasonable basis for clinical application of antimicrobial agents. Methods Collecting respiratory tract, blood, cerebrospinal fluid and other specimens from out-patient and in-patients of some hospital in Qingdao from January 2005 to December 2008. According to the recommendation of NCCLS, antibiotic resistance analysis of 11 kinds of antibiotic to the isolated 231 Streptococcus pneumoniae by micro-agar dilution method, and analysis resistance trends and age differences. Results The results showed that the rate of Streptococcus pneumoniae not sensitive to penicillin is 23. 38% (PRSP: 9.52% , PISP: 13. 85% ) , resistant to cefotaxime is 9. 96% (23/231), resistant to amoxicillin is 12. 55% , resistant to erythromycin is 90. 48% (209/231). PRSP rate of patients younger than 14 years of age 27. 91% (12/43), significantly higher than that of the PRSP rate of adults 5. 38% (10/186). Conclusion The rate of resistant to penicillin Streptococcus pneumoniae increased significantly from 2004, and an increasing trend year by year, the resistance of Streptococcus pneumoniae is also a rising trend year by year. For patients infected low penicillin-resistant Streptococcus pneumoniae in this region, cefotaxime, amoxicillin are preferred drugs.

0.05). (2) There was a significant difference in the distribution frequency of ?_2-AR at locus +46 between mild, moderate and severe degrees of PIH (P