Objective To observe the effect of spleen-warming and kidney-tonifying therapy on Toll-like receptor 4 (TLR4) signaling pathway of cerebral infarction sequelae patients. Methods A total of 60 cerebral infarction sequelae patients with spleen and kidney(yang) deficiency were divided into control group and treatment group, 30 cases in each group. The two groups were given function rehabilitation training following by the theory of modern rehabilitation medicine, and additionally the treatment group was treated with spleen-warming and kidney-tonifying herbs orally. The treatment period for the two groups averaged 3 months. Before and after treatment, the scores of traditional Chinese medicine (TCM) symptoms and signs, peripheral blood TLR4 mRNA expression level, and the inflammation-related factors in the two groups were observed, and the observation parameters were compared with 30 healthy volunteers. Meanwhile, the changes of modern rehabilitation evaluation indexes were also evaluated before and after treatment. Results (1) After treatment, the Fugl-Meyer scores for motor function and Modified Barthel Index(MBI) scores for activities of daily living in the treatment group were obviously increased(P < 0.05 or P < 0.01 compared with those before treatment); the MBI scores in the control group was much increased(P < 0.05 compared with those before treatment), but the Fugl -Meyer scores only showed an increasing trend(P > 0.05). (2) After treatment, the predominant symptoms and signs of hemiplegia, facial distortion and dysphasia in the two groups were much improved(P < 0.01 compared with those before treatment), and the improvement in the treatment group was superior to that in the control group(P < 0.05). The control group had no significant effect on relieving the symptoms and signs of dizziness and blurred vision, numbness of limbs, spontaneous sweating, shortness of breath and weakness, and darkish tongue(P > 0.05 compared with those before treatment); the treatment group had obvious effect on the above symptoms and signs, and the effect was superior to that in the control group(P < 0.05 or P < 0.01).(3) For the inflammation-related factors, tumor necrosis factor alpha(TNF-α) level in the treatment group was much decreased and even arrived to the normal level(P > 0.05), and TNF-α level in the control group was decreased but did not arrive to the normal level(P < 0.05); levels of interleukin(IL)-1β, IL-6 and TLR4 mRNA in the two groups were decreased but did not arrive to the normal(P < 0.01), and the decrease in the treatment group was superior to that in the control group(P < 0.05 or P < 0.01). (4) During the treatment period, no obvious adverse effect was found in the two groups. Conclusion Oral use of spleen -warming and kidney –tonifying Chinese medicine combined with modern rehabilitation therapy is effective for the treatment of the sequelae of cerebral infarction patients by relieving the clinical TCM symptoms, and one of the therapeutic mechanisms is probably related with the TLR4 signaling pathway through regulating the expression of inflammatory factors.

Objective:To evaluate the safety and feasibility of cancer tissue specimen delivery through a preventive ostomy incision during laparoscopic radical resection of rectal cancer .Methods:A total of 155 patients undergoing laparoscopic radical rectal cancer combined with prophylactic ileostomy at Peking University Third Hospital from Oct 2016 to Sep 2021 were retrospectively divided into two groups according to where the specimens were delivered through prophylactic colostomy incision (46 cases) or through newly made suprapubic incision (109 cases).Results:The by prophylactic colostomy incision delivery group had shorter surgery time [(243±66) min vs. (281±73) min, t=3.003, P<0.01] and shorter postoperative hospital stay [(7.5±2.2) d vs. (8.8±4.3）d， t=2.516， P<0.05], while there were no significant differences in intraoperative blood loss, intraoperative blood transfusion, postoperative first time of flatus, surgery-related complications and ostomy-related complications between the two groups (all P>0.05). Though the ostomy size in the prevention colostomy group was larger ( P<0.01), but there were no significant differences in the ostomy related complications between the two groups ( P>0.05). Conclusions:Laparoscopic radical resection of rectal cancer with specimen delivery through a preventive ostomy incision is of more aesthetic advantages without causing higher postoperative complications.

Lung transplantation is the only effective therapeutic option for end-stage lung diseases, and postoperative rejection is the main factor affecting clinical prognosis of the recipients. Imaging examination can be utilized as a noninvasive tool to assist other examinations in monitoring rejection after lung transplantation. At present, multiple imaging examination methods have been reported. The advantages and disadvantages of various imaging examinations have been clarified, which may promote early diagnosis of rejection, deliver timely treatment for lung transplant recipients and improve the quality of life and clinical prognosis. In this article, the advantages, disadvantages and research progress upon different imaging examinations for rejection after lung transplantation were reviewed, aiming to provide reference for identifying the optimal noninvasive examination approach for rejection after lung transplantation and enhance the long-term survival of the recipients.

Objective To summarize and analyze the key procedures of the modified rat model of orthotopic left lung transplantation, aiming to provide more experience for the establishment of rat models of lung transplantation. Methods Two surgeons (A and B) performed complete transplantation in consecutive 15 rat models, and every 5 surgeries were divided into 1 practice stage. The operating time of each transplantation procedure was recorded. The differences of overall success rate and 1-week survival rate were calculated among different practice stages. The learning curve was delineated by the cumulative sum method. Results For surgeons A and B, the number of the first successful transplantation was the 5th and 6th time, the overall success rates of transplantation were 80% and 87% respectively, and the 1-week survival rates of rats both were 92%. Along with the increasing number of surgeries, the entire cardiopulmonary procurement, cannula preparation, cold ischemia, warm ischemia, transplantation and total operation time by two surgeons showed a significantly downward trend (all P < 0.05). For surgeons A and B, 3 and 2 rats died of heart failure due to overdose anesthesia, and 1 rat died of vein distortion at postoperative 1 d and 1 died of atelectasis at postoperative 7 d, respectively. The goodness of fit (R²) of cumulative sum method was 0.992 8 and 0.976 6. The turning point of learning curve was achieved in the 7th and 8th transplantation for surgeons A and B. Conclusions The modified rat model of orthotopic left lung transplantation yields high operability and repeatability both theoretically and technologically, and has multiple advantages of short learning curve, short operation time, high survival rate of the recipients and few complications, which is worthy of application in the basic research of lung transplantation.

Lung transplantation has become the most effective treatment of end-stage lung diseases. Along with persistent optimization of lung transplantation technique and perioperative management, the short-term clinical efficacy after lung transplantation has been significantly improved, whereas the long-term clinical prognosis remains unoptimistic. Besides chronic lung allograft dysfunction, postoperative malignant tumors also threaten the long-term survival of the recipients. Common malignant tumors following lung transplantation include nonmelanoma skin cancer, posttransplant lymphoproliferative disease and lung cancer. After solid organ transplantation, a large majority of the recipients require lifelong immunosuppressive therapy. The intensity of immunosuppressive therapy for the lung transplant recipients is generally higher than other organ transplant recipients. Immunosuppression is the main factor which leads to the impairment of anti-tumor immune monitoring function and promotes the incidence and development of malignant tumors. In this article, the risk factors, prevention and treatment of the most common malignant tumors after lung transplantation were reviewed, aiming to provide reference for comprehensive diagnosis and treatment of malignant tumors following lung transplantation.

Objective To modify the mouse model of orthotopic left lung transplantation from different perspectives, aiming to establish a simpler, faster and stabler mouse model of lung transplantation. Methods Based on preliminary modified rat model of orthotopic left lung transplantation established by our team, varying extent of modifications were made regarding the tracheal intubation, cannula preparation and anastomosis procedures of orthotopic left lung transplantation in the recipient mice. Orthotopic left lung transplantation in 40 mice were performed by an operator with microsurgical experience. The dissection of the recipient's hilar structure was carried out at the plane of the hilar clamp model within the reverse-view, and the three branches (left main bronchus, pulmonary artery and pulmonary vein) of the pulmonary hilum were anastomosed in turn by the "pendulum" anastomosis method. The operation time of each procedure was recorded. The recipient mice were sacrificed at postoperative 2 weeks, and the incidence of postoperative complications was recorded. Results Lung transplantation was successfully completed in 40 mice, with no bronchial and vascular tearing or twisting, and no bleeding at the anastomosis site. The overall cardiopulmonary procurement time was (10.7±1.5) min, cannula preparation time was (16.2±1.5) min, cold ischemia time was (25.1±2.4) min, warm ischemia time was (19.4±1.6) min, and the total operation time was (57.2±2.9) min, respectively. During the follow-up from 6 to 14 days after surgery, one recipient mouse died of pleural effusion, probably caused by infection. No pneumothorax, thrombosis or atelectasis was found in the remaining recipient mice during postoperative follow-up. Conclusions The modified mouse model of orthotopic left lung transplantation based on "pendulum" anastomosis of the reverse-view plane possesses multiple advantages of short operation time, high success rate and few complications, which is expected to become an alternative model of studying pathological changes after lung transplantation and worthy of further application.

Objective To investigate the dietary patterns of rural residents in the high-incidence areas of esophageal cancer (EC), and to explore the clustering and influencing factors of risk factors associated with high-incidence characteristics. Methods A special structured questionnaire was applied to conduct a face-to-face survey on the dietary patterns of rural residents in Yanting county of Sichuan Province from July to August 2021. Univariate and multivariate logistic regression models were used to analyze the influencing factors of risk factor clustering for EC. Results There were 838 valid questionnaires in this study. A total of 90.8% of rural residents used clean water such as tap water. In the past one year, the people who ate fruits and vegetables, soybean products, onions and garlic in high frequency accounted for 69.5%, 32.8% and 74.5%, respectively; the people who ate kimchi, pickled vegetables, sauerkraut, barbecue, hot food and mildew food in low frequency accounted for 59.2%, 79.6%, 68.2%, 90.3%, 80.9% and 90.3%, respectively. The clustering of risk factors for EC was found in 73.3% of residents, and the aggregation of two risk factors was the most common mode (28.2%), among which tumor history and preserved food was the main clustering pattern (4.6%). The logistic regression model revealed that the gender, age, marital status and occupation were independent influencing factors for the risk factors clustering of EC (P<0.05). Conclusion A majority of rural residents in high-incidence areas of EC in Yanting county have good eating habits, but the clustering of some risk factors is still at a high level. Gender, age, marital status, and occupation are influencing factors of the risk factors clustering of EC.