Objective To investigate the role of miR-126 (micro RNA-126) in rat endothelial progenitor cells (EPCs) proliferation and migration and the starget gene of miR-126 by bioinformatics and experimental survey.Method EPCs were transfected with control oligoes and miR-126 mimics or inhibitor by electroporation.MTT was performed to evaluate the growth of EPCs subjecting to miR-126 overexpression.Cell migration analysis was done by wound healing and transwell assay.The target genes of miR-126 were predicted by TargetScan and validated by Western blot.Result (1) miR-126 mimics promoted EPCs growth at 24 h post cell transfection (P ＜ 0.01).In contrast,the EPCs growth was immue from miR-126 application at 48 and 72 h.(2) Both the wound healing and transwell assay show that miR-126 promotes EPCs migration (P ＜ 0.01) and miR-126 inhibitor inhibits EPCs migration (P ＜ 0.01).(3)It is predicted that KANK2 is the potential target gene of miR-126 by TargetScan online software.(4) The results of Western blot indicated that miR-126 mimics repress the expression of KANK2 compared with NC but miR-126 inhibitor enhances KANK2 expression.Conclusions miR-126 has a transient effect on the promotion of EPCc growth.miR-126 promotes EPCs migration and targets KANK2 protein.

Objective To examine the practical value of early detection of heart-type fatty acid binding protein (H-FABP)for risk stratification and prognosis assessment in cardiac troponin T (cTnT)-negative acute coronary syndrome(ACS)patients.Methods From March 2010 to March 2012,55 patients with chest pain and negative cTnT were selected from 232 ACS patients at the General Hospital of PLA.Expression levels of cTnT and H-FABP were detected within 6 h of the onset of clinical symptoms.H-FABP and cTnT values at 12,24,and 48 h from the onset of clinical symptoms were continuously measured to monitor the dynamic changes.Based on prognosis,patients were divided into two groups,levels of H-FABP were compared,and its predictive value for prognosis was assessed with the ROC curve.Results Within 6 h of the onset of clinical symptoms,cTnT levels in cTnT-negative ACS patients increased gradually as disease progressed and reached the peak value at 12 h before decreasing slowly and arriving at 50％ of the peak value at 48 h.Meanwhile,HFABP levels reached the peak within 6 h,decreased slightly(12.8％) at 12 h,and then decreased rapidly at 48 h (about 79％).Of 55 patients,24 had acute myocardial infarction during hospitalization.The H-FABP level within 6 h was a good predictor for cTnT-negative ACS patients.The area under ROC curve was 0.946 and the cutoff value was 15.47 μg/L.The prediction sensitivity was 87.5 ％,with a specificity of 90.3％.Eleven patients had cardiovascular events after a 12-month follow-up.Levels of H-FABP were different in patients with or without cardiovascular events,[(38.08±8.43) μg/L vs.(18.96 ± 2.85) μg/L (t =2.438,P＜0.05)].ROC curve analysis showed that the area under the curve was 0.772 and the prediction cutoff value was 44.71 μg/L.The rates of cardiovascular events were markedly different between patients with high(≥44.71 μg/L)and those with 1ow(＜44.71 μg/L)H-FABP levels(54.5％ vs.11.4％).Conclusions For ACS patients with negative cTnT,H-FABP is a good index for early risk stratification and prognosis assessment.

Objective To explore the effect of walking on residual beta cell function and glycemic control in patients with type 1 diabetes mellitus.Methods A total of 117 type 1 diabetes mellitus patients who usually walked less than 5000 steps per day were given health education about exercise and divided into three groups according to their self-estimates of the number of walking steps they had taken daily in the previous 4 months:an absent exercise group (＜ 5000 steps/day),a basic exercise group (5000-10000 steps/day) and an active exercise group (＞ 10000 steps/day).Among them,34 were in absent group (23.5％ for males),45 were in basis exercise group (40.0％ for males) and 38 were in active exercise group (52.6％ for males).Fasting C-peptide,postprandial C-peptide,and postprandial C-peptide to glucose ratio were used to evaluate the residual beta cell function,while glycated hemoglobin A1c (HbA1c) and insulin dose-adjusted HbAlc (IDAAlc) were used to evaluate their glycemic control.Results The beta cell function and glycemic control showed a tendency to improve with increases in the number of walking steps.Fasting C-peptide,postprandial Cpeptide and the postprandial C-peptide to glucose ratio also increased significantly,while HbA1c and IDAA1c decreased significantly.After balancing the initial difference in the analysis of covariance,significant differences were still found among the 3 groups in the subjects' beta cell function and glycemic control during the follow-up.Linear regression showed that a large number of steps independently predicted better beta cell function.Conclusions In patients with type 1 diabetes mellitus,walking exercise may be effective for improving residual beta cell function and glycemic control.

Hepatic hydrothorax (HH) is a challenging complication of liver cirrhosis associated with portal hypertension, and its pathogenesis and therapeutic measures remain unknown. This article summarizes and reviews the advances and challenges in the research on the pathogenesis, clinical manifestations, diagnosis, and treatment of HH and proposes a multidisciplinary treatment strategy, including reducing the production of ascites, preventing effusion from entering the thoracic cavity, removing pleural effusion, occluding the pleural cavity, and performing liver transplantation, so as to provide a reference for more clinicians.

Pulmonary blast injury has become the main type of trauma in modern warfare, characterized by externally mild injuries but internally severe injuries, rapid disease progression, and a high rate of early death. The injury is complicated in clinical practice, often with multiple and compound injuries. Currently, there is a lack of effective protective materials, accurate injury detection instrument and portable monitoring and transportation equipment, standardized clinical treatment guidelines in various medical centers, and evidence-based guidelines at home and abroad, resulting in a high mortality in clinlcal practice. Therefore, the Trauma Branch of Chinese Medical Association and the Editorial Committee of Chinese Journal of Trauma organized military and civilian experts in related fields such as thoracic surgery and traumatic surgery to jointly develop the Clinical treatment guideline for pulmonary blast injury ( version 2023) by combining evidence for effectiveness and clinical first-line treatment experience. This guideline provided 16 recommended opinions surrounding definition, characteristics, pre-hospital diagnosis and treatment, and in-hospital treatment of pulmonary blast injury, hoping to provide a basis for the clinical treatment in hospitals at different levels.