ObjectiveTo review the biological characteristics of self-assembling peptide nanofiber scaffold (SAPNS) and its potential to induce bone repair. MethodsThe literature regarding SAPNS and its application in bone repair was extensively analyzed and reviewed. ResultsSAPNS is derived from natural amino acids, and has the properties of good biocompatibility and non-toxic degradation products. Their microenvironment highly mimics the natural extracellular matrix, and controlled release of growth factors as well as modification with functional motifs can substantially improve their bioactivity. Many studies on cell composite culture and bone defect repair of animal models reveal that SAPNS has the ability to promote the function of bone cells (e.g. adherence, proliferation, and differentiation) in vitro, and enhance new bone tissue formation in vivo. ConclusionSAPNS may be an ideal material for bone repair, but its biologically mechanical properties need further improvement.
目的探討胸腹腔鏡在食管癌手術中應用的可行性及近期療效。 方法2012年6月至2013年10月四川省人民醫院胸外科90例食管癌患者行胸腹腔鏡聯合食管癌切除術，其中男54例、女36例，年齡47～83歲，平均（63.15±11.10）歲。手術先行胸腔鏡游離胸段食管并清掃淋巴結，再腹腔鏡游離胃行食管胃左頸部吻合術。記錄手術時間、術后胸腔引流管放置時間、平均住院時間、淋巴結清掃枚數、術后并發癥等。 結果全部無圍術期死亡。手術時間260～450 min。術后4～11 d（平均5 d）拔除胸腔閉式引流管，胸腔總引流量為530～4 260 ml。全組共清掃縱隔淋巴結（氣管旁、右下肺韌帶、食管旁、隆凸下及左右喉返神經鏈旁）、腹腔淋巴結（賁門旁、胃左動脈旁）及頸部淋巴結1 395枚，平均每例15.5枚，15例（16.7%）發現淋巴結轉移。術后發生吻合口瘺7例（7.8%），聲音嘶啞5例（5.6%），肺部感染5例（5.6%），乳糜胸2例（2.2%），均經保守治療后痊愈。術后10～14 d出院。門診及電話隨訪82例，隨訪率91.1%，隨訪時間1～16個月，患者全部生存，無復發。 結論胸腹腔鏡聯合行食管癌根治術在技術上是安全可行的，近期療效可靠。
ObjectiveTo systematically evaluate the risk prediction models for anastomotic leakage (AL) in patients with esophageal cancer after surgery. MethodsA computer-based search of PubMed, EMbase, Web of Science, Cochrane Library, Chinese Medical Journal Full-text Database, VIP, Wanfang, SinoMed and CNKI was conducted to collect studies on postoperative AL risk prediction model for esophageal cancer from their inception to October 1st, 2023. PROBAST tool was employed to evaluate the bias risk and applicability of the model, and Stata 15 software was utilized for meta-analysis. ResultsA total of 19 literatures were included covering 25 AL risk prediction models and 7373 patients. The area under the receiver operating characteristic curve (AUC) was 0.670-0.960. Among them, 23 prediction models had a good prediction performance (AUC>0.7); 13 models were tested for calibration of the model; 1 model was externally validated, and 10 models were internally validated. Meta-analysis showed that hypoproteinemia (OR=9.362), postoperative pulmonary complications (OR=7.427), poor incision healing (OR=5.330), anastomosis type (OR=2.965), preoperative history of thoracoabdominal surgery (OR=3.181), preoperative diabetes mellitus (OR=2.445), preoperative cardiovascular disease (OR=3.260), preoperative neoadjuvant therapy (OR=2.977), preoperative respiratory disease (OR=4.744), surgery method (OR=4.312), American Society of Anesthesiologists score (OR=2.424) were predictors for AL after esophageal cancer surgery. ConclusionAt present, the prediction model of AL risk in patients with esophageal cancer after surgery is in the development stage, and the overall research quality needs to be improved.
ObjectiveTo explore the method for establishing a pig left lung orthotopic transplantation model. MethodsDetailed surgical procedures, including animal anesthesia, tracheal intubation, donor lung retrieval, and recipient transplantation, were thoroughly reported. By examining the histological morphology and blood gas analysis of the transplanted lung 2 hours after reperfusion, the histological changes and function of the transplanted lung were assessed. ResultsThis method was applied to four male Yorkshire pigs with an average weight of (40.0 ±2.5) kg for left lung in situ transplantation, effectively simulating conditions relevant to human lung transplantation. Two hours after the transplantation, arterial blood gas analysis showed PaO2 was 155.4-178.6 mm Hg, PaCO2 was 53.1-62.4 mm Hg, and the oxygenation index was 310.8-357.2 mm Hg. Hematoxylin and eosin staining indicated a low degree of pulmonary edema and minimal cellular infiltration. ConclusionThe pig left lung orthotopic transplantation model possesses strong operability and stability. Researchers can replicate this model according to the described methods and further conduct basic research and explore clinical translational applications.