Objective:To study the signal enhancement of lung adenocarcinoma nude mice after injection of immunomagnetic bead solution (magnetic beads conjugated with monoclonal antibody NJ001) in micro-CT scan. Methods:The models of lung adenocarcino-ma nude mice were established by injecting SPC-A1-luc cells through the tail vein and were validated by bioluminescence imaging (BLI). The nude mice were divided into three groups: physiological saline group, bare magnetic bead group, and immunomagnetic bead group. Three groups of nude mice were injected with physiological saline, 750 nm bare magnetic bead solution, and immuno-magnetic bead solution via the tail vein every week, and micro-CT scan was taken before and 4 h after injection. Immunohistochemis-try (IHC) was used to detect the expression of antigen SP70 in tumor tissues. Results:The tumor was detected in the immunomagnetic bead group at the fourth week, whereas in the physiological saline and bare magnetic bead groups, the tumor was undetectable until the sixth week. The tumor intensities detected at the sixth week by micro-CT scan in the physiological saline, bare magnetic bead, and immunomagnetic bead groups were 59.05 ± 0.66, 60.69 ± 0.55, and 58.25 ± 0.32 before injection and 60.30 ± 1.83, 61.05 ± 0.68, and 67.41±3.82 after injection, respectively. Compared with the tumor intensities before injection, they significantly increased after injec-tion in the immunomagnetic bead group;the difference was statistically significant (P=0.0079). By contrast, no statistical significance was observed in the tumor intensities before and after injection in the physiological saline and bare magnetic bead groups (P=0.1867 and P=0.3839, respectively). Conclusion:The immunomagnetic beads had enhanced effect on micro-CT scan of lung adenocarcinoma nude mouse models.

Objective To analyze the clinical distribution ,drug resistance and genotyping of bloodstream infection Staphylococ-cus aureus in our hospital .Methods Bacteria identification and drug sensitivity test were performed in 102 strains of Staphylococ-cus aureus isolated by automatic bacteria identification system in our hospital during January 2010 to January 2017 ,and the geno-types were determined by polymerase chain reaction (PCR) .Results Staphylococcus aureus bloodstream infection was the most common in people aged 70- <80 years old (29 .41% ) ,followed by the age of 50- <60 years old (15 .69% ) .The disease was the most common in the intensive care unit (ICU) (29 .41% ) ,followed by hemodialysis room (21 .57% ) .The drug resistance rate to penicillin was the highest (94 .12% ) ,followed by clindamycin (66 .67% ) ,and it was sensitive to vancomycin ,tigecycline ,teicoplanin and linezolid (100 .00% ) .The drug resistance rates of Methicillin-resistant Staphylococcus aureus (MRSA) to penicillin ,clindamy-cin ,erythromycin ,gentamicin ,levofloxacin ,tetracycline ,rifampicin ,ciprofloxacin and ampicillin/sulbactam were significantly higher than those of Methicillin-sensitive Staphylococcus aureus (MSSA) (P<0 .05) .The erm gene carrying rate was 100 .00% .Among MRSA ,there were 12 strains carrying ermA gene and 28 strains carrying ermA+ermC gene .Among MSSA ,there were 38 strains carrying ermB gene and 24 strains carrying ermC gene .The ermC gene accounted for 77 .27% in induced drug-resistant strains .Con-clusion Staphylococcus aureus bloodstream infection is more common in the elderly ,especially in the advanced age ,and it is more common in ICU .The detection rate of MRSA is relatively higher ,and the erm gene carrying rate of Staphylococcus aureus is high . ermA gene is common in MRSA while ermB gene is common in MSSA .MRSA is resistant to several antibiotics .It is recommended to choose vancomycin and tigecycline for antibiotic treatment .

The hospital optimized the lab order administration algorithm in ICU along with full-range IT-based monitoring.The new algorithm can effectively prevent preanalytical errors and improve nurse 's satisfaction in carrying out such orders.Nurse managers should closely monitor the compliance of personal digital assistant usage and analyze the causes of error for higher compliance.With such measures, we can maximize the function to intercept potential errors of the information system, and avoid preanalytical errors ultimately.

Objective: To develop an automatic warning software system for MEWS, and apply the MEWS system and SBAR communication mode to the early warning of surgical patients to evaluate its implementation effect. Methods: From November 2017 to November 2018, 400 patients in the People′s Hospital of Guigang City, Guangxi, with vital signs and critical illness after surgery were divided into 200 patients in the control group and 200 in the study group according to the random number table. The control group: routinely calculated MEWS scores and reported abnormal values to the doctor to treat the patient′s condition. The research group: Combining MEWS assignment with computer technology, developing MEWS automatic disease warning software system and combining it with SBAR communication mode for early warning of surgical patients′ condition, comparing the two groups′ disease evaluation time, treatment response speed, communication completion rate and Whether patients and doctors have different job satisfaction with nurses. Results: The disease assessment time and treatment response rate of the study group were (45.89±1.528) seconds and (1.22±0.57) minutes, respectively. The control group was (58.01±5.123) seconds and (3.19±1.56) minutes respectively. The difference between the two groups was significant (t=32.078, -7.899, P<0.01). The communication completion rate of the study group, the patient's job satisfaction to the nurses, and the doctor's job satisfaction to the nurses was 96.0% (192/200), 91.5% (183/200) and 97.0% (194/200) respectively. The rate in the control group was 61.5% (123/200), 79.0% (158/200), and 78.0% (156/200) respectively, the difference between the two groups was significant (χ²=71.126, 12.426, 33.006, P < 0.01). Conclusion The MEWS automatic warning software system and SBAR communication mode can be used to quickly assess the patient′s condition, improve the accuracy of medical communication, alert patients to potential risks and severity of illness, and improve nurses' work efficiency and patient and doctor's satisfaction with nurses' work degree.

Adult ; Cladribine/therapeutic use* ; Histiocytosis, Langerhans-Cell/drug therapy* ; Humans

Objective To investigate the effect of recombinant Schistosoma japonicum egg ribonuclease SjCP1412 (rSjCP1412) on proliferation, cell cycle, apoptosis and activation of human hepatic stellate cells LX-2 in vitro, and explore the underlying mechanisms. Methods The rSjCP1412 protein was expressed in Escherichia coli BL21 by prokaryotic expression, and the highly purified soluble rSjCP1412 protein was prepared by Ni NTA affinity chromatography and urea gradient refolding dialysis. Yeast RNA was digested using 12.5, 25.0, 50.0 µg rSjCP1412 proteins at 37 °C for 2, 3, 4 h, and the enzymatic products were electrophoresed on 1.5% agarose gel to observe the RNAase activity of rSjCP1412 protein. The proliferation of LX-2 cells stimulated by different doses of rSjCP1412 protein for 48 hours was measured using CCK-8 assay, and the apoptosis of LX-2 cells stimulated by different doses of rSjCP1412 protein for 48 hours was detected using the Annexin V-FITC/PI double staining, while the percentage of LX-2 cells at G0/G1, S and G2/M phases of cell cycle following stimulation with different doses of rSjCP1412 protein for 48 h was detected by DAPI staining. The type I collagen, type III collagen and α-smooth muscle actin (α-SMA) mRNA expression was quantified using quantitative florescent real-time PCR (qPCR) assay and Western blotting at transcriptional and translational levels in LX-2 cells following stimulation with different doses of rSjCP1412 protein for 48 h, while soluble egg antigen (SEA) served a positive control and PBS without rSjCP1412 protein as a normal control in the above experiments. The expression of collagen I, α-SMA and Smad4 protein was determined using Western blotting in LX-2 cells following stimulation with rSjCP1412 protein, transforming growth factor-β1 (TGF-β1) alone or in combination, to examine the signaling for the effect of rSjCP1412 protein on LX-2 cells. Results The rSjCP1412 protein was successfully expressed and the highly purified soluble rSjCP1412 protein was prepared, which had a RNase activity. Compared with the normal group, the survival rates of LX-2 cells significantly decreased post-treatment with 12.5, 25.0, 50.0 µg/mL rSjCP1412 protein and SEA for 48 h (F = 22.417 and 20.448, both P values < 0.05). The apoptotic rates of LX-2 cells significantly increased post-treatment with 12.5, 25.0, 50.0 µg/mL rSjCP1412 protein for 48 h (F = 11.350, P < 0.05), and treatment with 12.5, 25.0, 50.0 µg/mL rSjCP1412 protein for 48 h resulted in arrest of LX-2 cells in G0/G1 phase (F = 20.710, P < 0.05). Treatment with 12.5, 25.0, 50.0 µg/mL rSjCP1412 protein for 48 h caused a significant reduction in relative expression levels of collagen I (F = 11.340, P < 0.05), collagen III (F = 456.600, P < 0.05) and α-SMA mRNA (F = 23.100, P < 0.05) in LX-2 cells, and both rSjCP1412 protein and SEA treatment caused a significant reduction in collagen I (F = 1 302.000, P < 0.05), α-SMA (F = 49.750, P < 0.05) and Smad4 protein expression (F = 52.420, P < 0.05) in LX-2 cells. In addition, rSjCP1412 protein treatment inhibited collagen I (F = 66.290, P < 0.05), α-SMA (F = 31.300, P < 0.05) and Smad4 protein expression (F = 27.010, P < 0.05) in LX-2 cells activated by TGF-β1. Conclusion rSjCP1412 protein may induce apoptosis of LX-2 cells and inhibit proliferation, cell cycle and activation of LX-2 cells through down-regulating Smad4 signaling molecules.