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Objective To determine the value of soluble triggering receptor expressed on myeloid cells 1 (sTREM-1) in patients with stable chronic obstructive pulmonary disease (sCOPD). Methods From 2015 January to 2015 August, 101 patients with stable chronic obstructive pulmonary disease and 81 healthy controls were en-rolled. All subjects underwent pulmonary function test to record FEV1%pred and FEV1%FVC and their serum sTREM-1 levels were determined. Arterial blood gas analyses and COPD assessment tests were also conducted in stable COPD patients. Results Serum sTREM-1 levels were significantly higher in stable COPD patients than healthy controls (113.2 ± 31.5 pg/mL and 83.8 ± 17.9 pg/mL respectively, P=0.000). sTREM-1 levels were posi-tively correlated with CAT score (r=0.507, P=0.000), whereas negatively correlated with FEV1%pred and PaO2 (r = 0.507, P = 0.000; r = 0.439, P = 0.000). Conclusion sTREM-1 is a promising biomarker to evaluate sCOPD in the future.
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Objectives To explore the correlation of level of serum 25-hydroxyvitamin D with pulmonary function in adult with asthma. Methods Patients were divided into Asthmatic group(n=62)and Control group (n=28). The Asthmatic group was further divided into Mild Group (n=6), Moderate Group (n=13) and Severe Group (n=43). Serum levels of 25-hy?droxyvitamin D [25(OH)D], denoted as 25(OH) Vit D was detected by ELISA. Pulmonary function indicators,including FVC (forced vital capacity) , FEV1 (forced expiratory volume in 1 second) , FEV1%predicted , and FEV1/FVC%were deter?mined by a pulmonary function testing device. General profiles such as medical history, age and height as well as serum VitD levels were compared between subgroups of the asthmatic groups and between two genders. Serum levels of 25 (OH) VitD were compared between asthmatic group and control group while its correlation with FEV1%predicted were calculated in all three sub asthmatic groups. Results There was no significant difference in medical history, age, height and the 25(OH) VitD levels between male and female participants. Serum 25(OH) Vit D level was significantly lower in the asthmatic patient group [(29.69±20.45) nmol/L] compared to that in control group [(75.16±4.06) nmol/L] (P<0.05). It was significantly lower in severe sub group than those in the mild and moderate sub groups. The differences were both statistically significant ( P<0.05). There were positive correlations between serum 25(OH) Vit D levels and FEV1%predicted ( P<0.05) in all sub asth?matic groups. Conclusion Vitamin D deficiency is highly prevalent in asthmatic patients, and there is a strong correlation between 25(OH) Vit D asthma severity as well as between lung function.
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Objective To study the mechanisms on drug susceptibility and resistance of clinically multidrug-resistant Escherichia coli isolates,to provide information on related treatment.Methods The susceptibility of E.coli strains that isolated from different kinds of samples in the last 3 years on drugs was analyzed by agar dilution test,with strains that exhibiting resistances to cefotuxime,ciprofloxacin and amikacin simultaneously collected for further analysis.Resistant genes which mediate resistance to β-lactamases,fluoroquinolone and aminoglycoside as well as phylogenic type were detected by PCR amplification while genetic relation was analyzed by PFGE.Transferability of resistant plasmids was identified by conjugation test.Results In total,137 multidrug-resistant E.coli isolates were collected.Only 1％ of the isolates exhibited resistance to both imipenem and meropenem while 4％ of the strains were resistant to piperacillin/tazobactam.Most (85％) of the isolates were positive to ESBL and majority of them produced CTX-M.Target substitution and production of methylases were the main mechanisms causing resistance to fluoroquinolones and aminoglycosides respectively.Conclusion The main source of clinical multidrug-resistance was collected from urine samples.Carbapenem and enzyme inhibitor-containing antibiotics seemed to be the available antibiotics that were sentitive to the clinically multidrug-resistant E.coli isolates.
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Objective To generate of human induced pluripotent stem cells from umbilical cord matrix cells(UMC).Methods Sox2 and Klf4 and Oct4 and c-Myc were transfected into UMC cells with retrovirus,and thcn UMC cells was reprogrammed to iPS cells.Gene expression was confirmed with RT -PCR and the integration was confirmed with cell karyotype.iPS cells were further validatcd with cell alkaline phosphatase detection and immunofluorescence staining,differentiating into teratomas in vivo and embryoid bodies in vitro.Results iPS cells were similar to embryonic stem cells (ES).The expression of Nanog,Oct4,Rex1 and Sox2 in iPS cells were higher than UMC cells,and Sox2,Klf4,Oct4,c-Myc silenced in iPS cells.Exogenous genes were inserted into the nucleus of iPS cells,which was confirmed by 1％ agarose gel electrophoresis.iPS ccll karyotype was normal,alkaline phosphatase activity increased,ES cell-specific proteins,including SSEA3,SSEA4,TRA-1-60,TRA-1-81 and Nanog,were expressed.iPS cells were differentiated into a teratoma in vivo and embryoid bodies in vitro.Conclusions iPS cells were similar to ES cells,which had pluripotency.
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ObjectiveGeneration of human induced pluripotent stem cells from human skin fibroblasts.MethodsSox2, Klf4, Oct4, c-Myc were transfected into HSF cells with retrovirus, and then HSF cells was reprogrammed to iPS cells.Detecting cells endogenous and exogenous gene, analyzing karyotype,cells alkaline phosphatase staining and immunofluorescence staining, differentiating into teratomas in vivo and embryoid bodies in vitro were performed.ResultsiPS cell morphology was similar to embryonic stem cells (ES).The expression of Nanog, Oct4, Rex1, Sox2 in iPS cells were higher than HSF cells, and Sox2, Klf4, Oct4, c-Myc were silenced for the iPS cells.Exogenous genes were inserted into the nucleus of iPS cells, which was confirmed by 1％ agarose gel electrophoresis.iPS cell karyotype was normal, alkaline phosphatase activity increased, ES cell-specific protein expressed.iPS cells were differentiated into a teratoma in vivo and embryoid bodies in vitro.ConclusionsiPS cells were similar to ES cells, which have pluripotency.