Establishment of A Patient-derived Xenotransplantation Animal Model for Small Cell Lung Cancer and Drug Resistance Model / 中国肺癌杂志

BACKGROUND@#Small cell lung cancer (SCLC) is characterized by poor differentiation, high malignancy and rapid growth fast, short double time, early and extensive metastatic malignancy. In clinical, chemotherapy is the main treatment method, while resistance to multiple chemotherapy drugs in six to nine months has been a major clinical challenge in SCLC treatment. Therefore, It has important clinical value to building SCLC aninimal model which is similar to patients with SCLC. Animal model of xenotransplantation (PDX) from the patients with small cell lung cancer can well retain the characteristics of primary tumor and is an ideal preclinical animal model. The study is aimed to establish SCLC PDX animal model and induce the chemoresistance model to help to study the mechanism of chemoresistance and individual treatment.@*METHODS@#Fresh surgical excision or puncture specimens from SCLC patients were transplanted into B-NSGTM mice subcutaneous tissues with severe immunodeficiency in one hour after operation the B-NSGTM mice subcutaneous in 1 hour, and inject chemotherapy drugs intraperitoneally after its tumor growed to 400 mm³ with EP which is cisplatin 8 mg/kg eight days and etoposide 5 mg/kg every two days until 8 cycles. Measure the tumor volum and mice weights regularly, then re-engrafted the largest tumor and continue chemotherapy.@*RESULTS@#Nine cases were conducted for B-NSG mice modeling. Three of nine cases could be engrafted to new B-NSG mice at least two generation. The SCLC PDX animal models have been established successfully. After adopting chemotherapy drugs, the chemoresistance PDX models have been established. High homogeneity was found between xenograft tumor and patient's tumor in histopathology, immunohistochemical phenotype (Syn, CD56, Ki67).@*CONCLUSIONS@#The SCLC PDX animal model and the chemoresistance PDX animal model have been successfully constructed, the success rate is 33%, which provides a platform for the clinical research, seeking for biological markers and choosing individual treatment methods of SCLC.

Nursing cooperation in finger guided non-thoracoscopic Nuss operation / 现代临床护理

Objective To introduce the surgical cooperation in finger-guided modified Nuss operation. Methods Forty-six patients with pectus excavatum (PE) underwent the finger-guided modified Nuss operation during September 2013 to August 2015. We retrospectively reviewed the surgical data and sumed up the key points for nursing cooperation. Results All the operations were successful. One patient developed preumothorax and chest subcutaneous emphysema;one patient developed pleural effusion. There was no bar shifting in the follow-ups. Conclusions Enough preoperative preparation and good doctor nurse cooperation are critical for the success of operations.

Investigation of the technique of esophageal stent re-implantation / 南方医科大学学报

<p><b>OBJECTIVE</b>To analyze the causes of failure of esophageal stent implantation and explore technical improvement of re-implantation of esophageal stent (RIES).</p><p><b>METHODS</b>According to the conditions of the failed stent implantation, 32 patients who required RIES underwent placement of more appropriate esophageal stents with an improved implantation technique. The patients were followed up for 6 months after the operation to evaluate the effects of RIES.</p><p><b>RESULTS</b>The success rate of the operation was 96.9% in these cases, and the esophageal conditions including stricture and fistula were effectively relieved. During the 6-month follow-up, stent migration occurred in 4 cases (12.5%), and esophageal fistula in the upper edge of the re-implanted stent occurred in 2 cases. No stent loss, bleeding, or stricture was found in these cases.</p><p><b>CONCLUSION</b>The improved technique is effective for stent re-implantation after failed esophageal stent implantation with reduced complications associated with esophageal stenting.</p>