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find Author "GUO Quanwei" 3 results
  • Clinical efficacy of stapler technique for repair of cervical tracheoesophageal fistula

    Objective To evaluate the clinical efficacy of fistula repair by stapler technique in patients with cervical tracheoesophageal fistula. Methods Retrospective analysis of 8 patients with cervical tracheoesophageal fistula who accepted operative treatment in the Department of Thoracic Surgery, Lanzhou University Second Hospital from October 2014 to October 2016 was conducted. There were 5 males and 3 females at a mean age of 46.4±13.9 years ranging from 23 to 67 years. The fistula was induced by tracheal intubation in 4 patients, by esophageal foreign bodies in 2, by tracheal stent in 1 and by esophageal diverticulum in 1. The fistula was closed by stapler technique. The surgical effects were evaluated through Karnofsky performance score (KPS), image assessment, patient satisfaction score and assessment of improvement in feeding-induced bucking. Results The operations were performed successfully with time of 117.5±6.6 min and intraoperative blood loss of 60.0±7.0 ml. After the operations, the patients did not suffer incision bleeding and infection, hoarseness, dyspnea, drinking-induced bucking, fistula relapse, tracheoesophageal stenosis or any other complications, and no death occurred during the perioperative period. The chest X-ray test was performed 1 week later showed that the pulmonary infection disappeared, and only 1 patient suffered from esophageal stenosis 1 year later. The postoperative KPS score was 90.0±7.0 points, which significantly improved in contrast to preoperation (P<0.01). Postoperative pulmonary infection area reduced significantly (P<0.05), tracheoesophageal fistula disappeared, postoperative patients satisfaction rate was 90%, and assessment of feeding-induced bucking was excellent. Conclusion Using stapler technique to repair cervical tracheoesophageal fistula is safe, easy and useful, with less operation time and postoperative complications.

    Release date:2018-01-31 02:46 Export PDF Favorites Scan
  • Clinical study on minimally invasive weaving technique for pectus carinatum

    ObjectiveTo explore the practical feasibility of the weaving technique for pectus carinatum.MethodsFrom January 2011 to December 2018, a total of 51 patients with pectus carinatum, including 47 males and 4 females at age of 9-29 (13.7±2.9) years, were applied with minimally invasive waving technique for the correction. The steel plate was inserted through the subcutaneous layer, intercostal space and over the sternal surface under direct thoracoscopic vision. The number of implanted steel plates was determined by the degree of chest wall deformity. The steel plate was removed 2 years after surgery.ResultsAll the operations were successfully completed, the average operation time was 63.9±15.8 min, the amount of bleeding was 19.8±8.8 mL, and the duration of postoperative hospitalization was 4.6±1.6 d. The adverse events included intercostal artery injury (n=2), pneumothorax (n=4), pleural effusion (n=3) and skin rupture (n=1). And there were 29 patients of moderate pain (numerical rating scale 4-6 points) on the first day after surgery, but no patient was asked to remove the steel palate due to intolerable discomfort. All patients were followed up after plate placement. Of the 51 patients, the plates were removed in 37 patients until 2 years after placement, and the duration of postoperative hospitalization was 1.4±0.5 d. After 33 (1-48) months of routine follow-up after the removal of the plate, 22 patients achieved excellent outcomes and 9 patients with good outcomes. Besides, there were 5 patients with fair outcome and 1 patient with poor outcome. No adverse effect was found in growth and development after the steel plate placement.ConclusionMinimally invasive weaving technique is a safe, feasible, effective and individualized operation for pectus carinatum with substantial thoracic reconstruction.

    Release date:2019-10-12 01:36 Export PDF Favorites Scan
  • Effect of DDX46 silencing on growth and apoptosis of esophageal carcinoma cells TE-1

    ObjectiveTo explore the effect of DDX46 silencing on growth and apoptosis in esophageal squamous cell carcinoma cell TE-1 by the shRNA. MethodsThe relative expression of DDX46 mRNA in TE-1 cells was detected by real-time quantitative polymerase chain reaction (qRT-PCR) and compared with immortalized human esophageal squamous cell Het-1A. DDX46 shRNA-expressing lentivirus was applied to silence DDX46 (experimental group), and non-silencing control lentivirus was added (control group) with a multiplicity of infection of 5 in TE-1 cells. In both groups, cell growth was monitored using high content screening, cell colony-forming capacity was measured by colony formation assay, cell apoptosis were determined by flow cytometry. Further, the Stress and Apoptosis Signaling Antibody Array Kit was used to detect the changes of signaling molecules in TE-1 cells after DDX46 knockdown. ResultsCompared with the control group, cell counting after DDX46 silencing showed that TE-1 cell growth was significantly inhibited (P<0.001). Colony formation assay showed that cell colony-forming capacity was significantly inhibited (P<0.01). Annexin V-APC flow cytometry showed a significant increase in apoptosis (P<0.001). In PathScan® Antibody Array, the expression levels of Akt (Ser473, phosphorylation) and IκBα (Total, N/A) significantly decreased (P<0.01), and the expression of Caspase-3 (Asp175, cleaved) increased (P<0.05). ConclusionDDX46 is overexpressed in TE-1 cells. Targeted gene silencing of DDX46 inhibits cell growth, and induces cell apoptosis. DDX46 silencing probably by negative regulation of Akt/NF-κB signaling pathway, to play a role in inhibiting TE-1 cells growth and inducing apoptosis.

    Release date:2017-06-02 10:55 Export PDF Favorites Scan
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