Objective To make a systematical review of the efficacy and safety of endoscopic variceal ligation versus endoscopic variceal sclerotherapy for treatment of esophageal variceal bleeding. Methods We electronically searched databases including PubMed, Web of Science, The Cochrane Library (Issue 2, 2016), CNKI, WanFang Data and from Jan., 1980, to Mar., 2015, collected randomized controlled trials (RCTs) about EVL versus EVS for the patients of esophageal variceal bleeding. Then, meta-analysis was performed using RevMan 5.3 software. Results A total of 24 studies including 2020 patients were included. The results of meta-analysis showed that, there were no signiifcant differences in the variceal eradication rate (RR=1.04, 95%CI 0.99 to 1.09, P=0.090) between the EVL group and the EVS group; Compared with the EVS group, the EVL group could significantly reduce the rate of variceal rebleeding (RR=0.69, 95%CI 0.59 to 0.81, P=0.000), the rate of mortality (RR=0.76, 95%CI 0.63 to 0.90, P=0.002) and the rate of complication (RR=0.41, 95%CI 0.26 to 0.63, P=0.000), but the rate of variceal recurrent rate of EVS group was lower than that of the EVL group (RR=1.67, 95%CI 1.40 to 2.01,P=0.000). Conclusion Current evidence shows that, the variceal eradication rate between EVL and EVS is similar, but the EVL has less incidence of variceal rebleeding and mortality and complication.

Objective:To observe and verify the changes of transcriptome in hyperoxia-induced acute lung injury (HALI), and to further clarify the changes of pathways in HALI.Methods:Twelve healthy male C57BL/6J mice were randomly divided into normoxia group and HALI group according to the random number table, with 6 mice in each group. The mice in the normoxia group were fed normally in the room, and the mice in the HALI group was exposed to 95% oxygen to reproduce the HALI animal model. After 72 hours of hyperoxia exposure, the lung tissues were taken for transcriptome sequencing, and then Kyoto Encyclopedia of Genes and Genomes database (KEGG) pathway enrichment analysis was performed. The pathological changes of lung tissue were observed under light microscope after hematoxylin-eosin (HE) staining. Real-time fluorescence quantitative reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting were used to verify the key molecules in the signal pathways closely related to HALI identified by transcriptomics analysis.Results:Transcriptomic analysis showed that hyperoxia induced 537 differentially expressed genes in lung tissue of mice as compared with the normoxia group including 239 up-regulated genes and 298 down-regulated genes. Further KEGG pathway enrichment analysis identified 20 most significantly enriched pathway entries, and the top three pathways were ferroptosis signaling pathway, p53 signaling pathway and glutathione (GSH) metabolism signaling pathway. The related genes in the ferroptosis signaling pathway included the up-regulated gene heme oxygenase-1 (HO-1) and the down-regulated gene solute carrier family 7 member 11 (SLC7A11). The related genes in the p53 signaling pathway included the up-regulated gene tumor suppressor gene p53 and the down-regulated gene murine double minute 2 (MDM2). The related gene in the GSH metabolic signaling pathway was up-regulated gene glutaredoxin 1 (Grx1). The light microscope showed that the pulmonary alveolar structure of the normoxia group was normal. In the HALI group, the pulmonary alveolar septum widened and thickened, and the alveolar cavity shrank or disappeared. RT-RCR and Western blotting confirmed that compared with the normoxia group, the mRNA and protein expressions of HO-1 and p53 in lung tissue of the HALI group were significantly increased [HO-1 mRNA (2 -ΔΔCt): 2.16±0.17 vs. 1.00±0.00, HO-1 protein (HO-1/β-actin): 1.05±0.01 vs. 0.79±0.01, p53 mRNA (2 -ΔΔCt): 2.52±0.13 vs. 1.00±0.00, p53 protein (p53/β-actin): 1.12±0.02 vs. 0.58±0.03, all P < 0.05], and the mRNA and protein expressions of Grx1, MDM2, SLC7A11 were significantly decreased [Grx1 mRNA (2 -ΔΔCt): 0.53±0.05 vs. 1.00±0.00, Grx1 protein (Grx1/β-actin): 0.54±0.03 vs. 0.93±0.01, MDM2 mRNA (2 -ΔΔCt): 0.48±0.03 vs. 1.00±0.00, MDM2 protein (MDM2/β-actin): 0.57±0.02 vs. 1.05±0.01, SLC7A11 mRNA (2 -ΔΔCt): 0.50±0.06 vs. 1.00±0.00, SLC7A11 protein (SLC7A11/β-actin): 0.72±0.03 vs. 0.98±0.01, all P < 0.05]. Conclusions:HALI is closely related to ferroptosis, p53 and GSH metabolism signaling pathways. Targeting the key targets in ferroptosis, p53 and GSH metabolism signaling pathways may be an important strategy for the prevention and treatment of HALI.

Objective　To detect the serum procalcitonin (PCT) levels in young patients with acute cerebral infarction (YACI) and study its relationship with the infarct volume of YACI patients.Methods　According to the volume of cerebral infarction,YACI patients (observation group) who were admitted for the first time were divided into large cerebral infarction group（18 patients）,middle cerebral infarction group (31 patients),and small cerebral infarction group (37 patients).The severity of clinical symptoms was determined using the National Institute of Health Stroke Scale score.In addition,72 healthy young people with brain diffusion weighted imaging examinations within the normal range during the same period were selected as the control group.Serum procalcitonin levels were measured by enzyme-linked immune sorbent assay (ELISA).The relationship among serum procalcitonin,young acute cerebral infarction volume and NIHSS score was analyzed.Results　Serum PCT levels in observation group were significantly higher than those in control group,NIHSS of severe group were significantly higher than those of mild group.The levels of PCT in large infarction group was higher than that in middle infarction group and small infarction group,while the levels of PCT in middle infarction group was higher than that in small infarction group.PCT levels were positively correlated with NIHSS score and infarct volume in the observation group.Conclusion　The levels of serum PCT in YACI patients may be related to the inflammatory reaction of the cerebral artery after cerebral infarction and positively related to the volume of cerebral infarction and NIHSS score.PCT concentration can predict the disease severity of YACI patients,and is of clinical application value.

Objective: A label-free electrochemical immunosensor was developed for the detection of nuclear matrix protein-22 (NMP22) as a biomarker of bladder cancer. Methods: The study was based on the establishment and validation of the methodology. Urine samples were collected from 20 patients with bladder cancer and 20 controls in the affiliated Hongqi hospital of Mudanjiang medical university from September in 2017 to July in 2019 to validate the developed method. A screen-printed electrode (SPE) was modified with a film of a composite made from the reduced graphene oxide-tetraethylene pentamine (rGO-TEPA) immobilized Zn-based-Metal-organic frameworks deposited with Au nanoparticles (rGO-TEPA@Au-ZIF8). Primary antibody against NMP22 was immobilized on the Au nanoparticles on the surface of the modified SPE, which then was blocked with bovine serum albumin to elimiate nonspecific binding sites. The process of the construction of the proposed sensorwas characterized by cyclic voltammetry and electrochemical impedance spectroscopy. Differential pulse voltammetry was used to evaluate the linear range, recovery, precision, selectivity and stability. The data were analyzed by Mann-Whitney U test. Results: Under optimal conditions, the immunosensor exhibited a linear range of 0.01-1000 ng/mlwith a detection limit of 3.33 pg/ml (S/N=3) and a standard recovery of 97.65%-107.05%. The levels of NMP22 in urine samples from patients with bladder cancer [66.03 (4.34, 91.74)]ng/ml determined by the proposed sensor were significantly higher than those of controls 0.54(0.06, 8.84) ng/ml(P=0.001). Conclusion The immunosensor can achieve sensitive, rapid and acucurate detection of NMP22, and has potential application prospects in monitoring tumor markers.