1.Efficacy Mechanism of Xianlian Jiedu Prescription Against Colorectal Cancer Recurrence vias Regulating Angiogenesis
Yanru XU ; Lihuiping TAO ; Jingyang QIAN ; Weixing SHEN ; Jiani TAN ; Chengtao YU ; Minmin FAN ; Changliang XU ; Yueyang LAI ; Liu LI ; Dongdong SUN ; Haibo CHENG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(6):79-87
ObjectiveTo explore effect of Xianlian Jiedu prescription on the recurrence of colorectal cancer (CRC) and investigate the related mechanisms. MethodsA postoperative recurrence model was established in 25 Balb/c mice by injecting CT26 cells subcutaneously into the armpit, followed by surgical removal of 99% of the subcutaneous tumor. The mice were randomly divided into model group, low-dose Xianlian Jiedu prescription (XLJDP-L) group (6.45 g·kg-1·d-1), medium-dose Xianlian Jiedu prescription (XLJDP-M) group (12.9 g·kg-1·d-1), high-dose Xianlian Jiedu prescription (XLJDP-H) group (25.8 g·kg-1·d-1), and 5-fluorouracil (5-FU) group (1×10-3 g·kg-1·d-1). The mice were euthanized after 14 days of continuous intervention, and recurrent tumor tissue was harvested. Hematoxylin and eosin (HE) staining was used to observe pathological and morphological changes in the recurrent tumor tissue. Immunohistochemistry (IHC) was employed to assess the expression of proliferating cell nuclear antigen (Ki67), vascular endothelial growth factor (VEGF), and platelet-endothelial cell adhesion molecule (CD31) in recurrent tumor tissue. The Western blot was used to detect the protein expression levels of angiopoietin-2 (ANG-2), VEGF, phosphorylated-protein kinase B (p-Akt), protein kinase B (Akt), phosphorylated-phosphatidylinositol 3-kinase (p-PI3K), and phosphatidylinositol 3-kinase (PI3K) in recurrent tumor tissue. ResultsBefore treatment, there were no statistical differences in tumor volume, tumor weight, and body mass among the XLJDP-L, XLJDP-M, and XLJDP-H groups and the 5-FU group compared to the model group, indicating model stability. After treatment, compared with those in the model group, the tumor volume and tumor weight in the XLJDP-L, XLJDP-M, and XLJDP-H groups and the 5-FU group were significantly reduced (P<0.01), showing dose dependency. Meanwhile, there were no significant differences in body weight among the XLJDP-L, XLJDP-M, and XLJDP-H groups and the 5-FU group compared to the model group. HE staining showed that compared with that in the model group, tumor tissue in the XLJDP-L, XLJDP-M, and XLJDP-H groups and the 5-FU group had loosely arranged cells, increased intercellular spaces, small and shriveled nuclei, light staining, fewer mitotic figures and atypical nuclei, and increased necrotic areas. IHC showed that compared with those of the model group, the positive rates of Ki67, VEGF, and CD31 in the recurrent tumor tissue of the XLJDP-L, XLJDP-M, and XLJDP-H groups and the 5-FU group were significantly reduced (P<0.01) in a dose-dependent manner. Western blot results showed that compared with those of the model group, the protein expression levels of ANG-2 and VEGF in the recurrent tumor tissue of the XLJDP-L, XLJDP-M, and XLJDP-H groups and the 5-FU group were significantly downregulated (P<0.05, P<0.01), and the p-Akt/Akt and p-PI3K/PI3K ratios were significantly decreased in a dose-dependent manner (P<0.05, P<0.01). ConclusionXianlian Jiedu prescription significantly inhibits the recurrence of CRC in mice after subcutaneous tumor surgery. The mechanism may involve regulating the PI3K/Akt pathway and downregulating key angiogenic proteins such as ANG-2, VEGF, and CD31.
2.Reevaluation of systematic evluation of Xianling gubao capsules for knee osteoarthritis
Dongdong CAO ; Jixin CHEN ; Weijie YU ; Tianci GUO ; Yu ZHANG ; Puyu NIU ; Aifeng LIU
China Pharmacy 2025;36(2):232-238
OBJECTIVE To conduct a reevaluation of the systematic review (SR)/meta-analysis on the use of Xianling gubao capsules (XLGBC) for knee osteoarthritis (KOA), and provide evidence-based support for the clinical use of the drugs. METHODS Computerized searches including CNKI, Wanfang Data, VIP, China Biomedical Literature Database, the Cochrane Library, PubMed, Embase and Web of Science were conducted to collect systematic reviews (SR) or meta-analyses of XLGBC for the treatment of KOA from the inception to May 31st, 2024. The report quality, methodological quality, risk of bias and evidence quality were assessed using the PRISMA 2020 statement, AMSTAR 2 scale, ROBIS tool and GRADE tool, respectively. A comprehensive quality analysis of the quantitative results from the SR/meta-analysis was also performed. RESULTS A total of five SR/meta-analyses were included. The evaluation results based on the PRISMA 2020 statement showed that one study report was relatively complete (21 points), while four studies had deficiencies (18-20 points). The assessment using the AMSTAR 2 scale indicated that the methodological quality of all five studies was rated as very low. According to the ROBIS tool evaluation, the risk of comprehensive bias in all five studies was classified as high. GRADE tool evaluation revealed that among 49 outcome indicators, 5 (10.2%) were rated as moderate-quality evidence (10.2%), 12 as low-quality evidence (24.5%), and 32 as very low-quality evidence (65.3%). The results of comprehensive quality analysis showed that the clinical efficacy, visual analogue scale score, pain relief time, comprehensive indexes of knee joint function, the levels of inflammatory factors and the incidence of adverse events in patients with XLGBC combined with conventional treatment were significantly better than conventional treatment alone (P<0.05). CONCLUSIONS Compared with conventional treatment, XLGBC in combination with conventional treatment for KOA may have some efficacy and safety advantages. However, due to the low quality of evidence for the outcome indicators included in the studies, the conclusions should be interpreted with caution.
3.Reevaluation of systematic evluation of Xianling gubao capsules for knee osteoarthritis
Dongdong CAO ; Jixin CHEN ; Weijie YU ; Tianci GUO ; Yu ZHANG ; Puyu NIU ; Aifeng LIU
China Pharmacy 2025;36(2):232-238
OBJECTIVE To conduct a reevaluation of the systematic review (SR)/meta-analysis on the use of Xianling gubao capsules (XLGBC) for knee osteoarthritis (KOA), and provide evidence-based support for the clinical use of the drugs. METHODS Computerized searches including CNKI, Wanfang Data, VIP, China Biomedical Literature Database, the Cochrane Library, PubMed, Embase and Web of Science were conducted to collect systematic reviews (SR) or meta-analyses of XLGBC for the treatment of KOA from the inception to May 31st, 2024. The report quality, methodological quality, risk of bias and evidence quality were assessed using the PRISMA 2020 statement, AMSTAR 2 scale, ROBIS tool and GRADE tool, respectively. A comprehensive quality analysis of the quantitative results from the SR/meta-analysis was also performed. RESULTS A total of five SR/meta-analyses were included. The evaluation results based on the PRISMA 2020 statement showed that one study report was relatively complete (21 points), while four studies had deficiencies (18-20 points). The assessment using the AMSTAR 2 scale indicated that the methodological quality of all five studies was rated as very low. According to the ROBIS tool evaluation, the risk of comprehensive bias in all five studies was classified as high. GRADE tool evaluation revealed that among 49 outcome indicators, 5 (10.2%) were rated as moderate-quality evidence (10.2%), 12 as low-quality evidence (24.5%), and 32 as very low-quality evidence (65.3%). The results of comprehensive quality analysis showed that the clinical efficacy, visual analogue scale score, pain relief time, comprehensive indexes of knee joint function, the levels of inflammatory factors and the incidence of adverse events in patients with XLGBC combined with conventional treatment were significantly better than conventional treatment alone (P<0.05). CONCLUSIONS Compared with conventional treatment, XLGBC in combination with conventional treatment for KOA may have some efficacy and safety advantages. However, due to the low quality of evidence for the outcome indicators included in the studies, the conclusions should be interpreted with caution.
4.Application of Anti-tumor Compatibility Structure of Chinese Medicine
Lanpin CHEN ; Feng TAN ; Xiaoman WEI ; Junyi WANG ; Liu LI ; Mianhua WU ; Haibo CHENG ; Dongdong SUN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(8):198-208
Malignant tumors are one of the major diseases that endanger human life and health. Chinese medicine has unique advantages in clinical anti-tumor treatment. However, how to translate the anti-tumor effects of Chinese medicine into clinical practice is the core issue that must be addressed in the process of treating malignant tumors with traditional Chinese medicine (TCM). Unlike modern chemical drugs, the compatibility application of Chinese medicine is the key factor that determines whether Chinese medicine can achieve optimal anti-tumor efficacy and realize the goal of "enhancing efficacy and reducing toxicity". The formulation structure based on this compatibility is the basic form for the safe, efficient, and rational clinical use of anti-tumor Chinese medicine, and it mainly includes three categories: herb pairs, tri-herbal combinations, and compound compatibility. Although herb pairs have the characteristics of a simple structure and strong targeting (enhancing efficacy and reducing toxicity), they often have a single effect and cannot fully address the complex pathogenesis of tumors. As a result, herb pairs are rarely used alone in practice. Compared to herb pairs, tri-herbal combinations broaden the application scope of herbs in clinical treatment, but their therapeutic range remains limited. The traditional "sovereign, minister, assistant, and guide" compound prescription, which includes herb pairs and tri-herbal combinations, improves the efficacy of herbs in treating serious diseases, hypochondriasis, chronic diseases, and miscellaneous disorders. However, due to the limitations of its historical background, it has not been integrated with modern clinical practice and modern pharmacological research, which restricts the development of compound compatibility theory. With the emergence of modern medical technology, it has been combined with traditional compatibility theory of Chinese medicine to create an innovative modern compatibility theory. This includes the "aid medicine" theory derived from modern Chinese medicine pharmacology, which compensates for the inability of the "sovereign, minister, assistant, and guide" theory to accurately apply medicine. Additionally, the "state-targeted treatment based on syndrome differentiation" theory, developed from pharmacology and modern medicine, addresses the deficiency in disease cognition in the "sovereign, minister, assistant, and guide" theory. Under the guidance of these compatibility forms and theories, clinical anti-tumor Chinese medicine can exert its maximum anti-tumor efficacy, which is of great significance for the application of Chinese medicine in clinical tumor treatment.
5.Research Progress on Antitumor Effect of AMPK/mTOR Signaling Pathway Regulated by Traditional Chinese Medicine
Xiafei ZHENG ; Dongdong LI ; Peimin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):268-276
With the increasing incidence and mortality of malignant tumors year by year, the prevention and treatment of malignant tumors has become a hot field of research. Although the existing anti-tumor treatment methods such as surgery, radiotherapy, chemotherapy, immunity and targeting have achieved some results, there are also obvious shortcomings, which are not conducive to the improvement of patients' quality of life and long-term treatment. Therefore, seeking a new efficient and safe treatment has become a hot topic of concern for many oncologists. adenosine monophosphate activated protein kinase(AMPK)/mammalian target of rapamycin(mTOR) signaling pathway can participate in intracellular energy metabolism and affect the pathogenesis and outcome of tumors through multiple mechanisms. It is widely mentioned in the occurrence and development of many tumors. The activity level of this pathway is closely related to the abnormal proliferation and invasion of tumor cells, and is considered as an important pathway for anti-tumor therapy research. The anti-tumor treatment of traditional Chinese medicine(TCM) has significant advantages such as syndrome differentiation and treatment and sample consideration. The study found that flavonoids, alkaloids, polyphenols, saponins and other active components of traditional Chinese medicine, as well as the traditional Chinese medicine compound Xiangbei San, Yiqi Fuzheng Jiedu decoction, Yiqi Fuzheng prescription, etc can activate the AMPK/ mTOR signaling pathway by regulating the expression of AMPK/mTOR signaling pathway and upstream and downstream proteins, thereby inducing tumor cell autophagy and apoptosis, inhibiting tumor angiogenesis and epithelial mesenchymal transformation, regulating aerobic glycolysis and energy metabolism, and reversing drug resistance to exert anti-tumor effects. In this paper, by summarizing the research achievements of TCM anti-tumor in recent years, the specific mechanism of action of TCM regulating AMPK/ mTOR signaling pathway against tumor was discussed, aiming to provide ideas and references for the research and development of anti-tumor new drugs.
6.TCM Treatment of Lung Cancer Based on AMPK Signaling Pathway: A Review
Chengzhi WANG ; Yifan LIU ; Zhenyao YANG ; Wenjun LI ; Xiaoqing ZHANG ; Dongdong LI ; Peimin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):291-298
As a common malignant tumor of the respiratory system, the incidence and mortality of lung cancer are still rising year by year. Its pathogenesis is complex, the prognosis is poor, and it seriously affects human physical and mental health. Although existing Western medical treatments can inhibit tumor growth to a certain extent and relieve patients' painful symptoms, problems such as postoperative recurrence and metastasis, numerous adverse reactions, and the tendency to develop drug resistance make the overall therapeutic effect unsatisfactory. Therefore, it is urgent to seek more efficient and safer treatments. Adenosine monophosphate-activated protein kinase (AMPK) signaling pathway can regulate the growth, differentiation, apoptosis, and autophagy of lung cancer cells, and is extensively involved in the occurrence and development of lung cancer, thus being regarded as an important target for anti-lung cancer therapy. Traditional Chinese medicine (TCM) exerts anti-lung cancer effects through multiple pathways, mechanisms, and targets, with advantages such as preventing postoperative recurrence and metastasis, alleviating the adverse reactions of radiotherapy and chemotherapy, and improving quality of life. TCM has therefore become a key approach in current anti-lung cancer treatment. Studies have found that active components of Chinese medicine, including flavonoids, saponins, polyphenols, and terpenes, as well as Chinese medicine compound prescriptions such as Guiqi Yiyuan extract, Qingzao Jiufei decoction, and Yiqi Fuzheng formula, have significant regulatory effects on AMPK and its interacting signaling pathways. These effects include inducing autophagy and apoptosis of lung cancer cells, modulating macrophage polarization, inhibiting epithelial-mesenchymal transition, reversing drug resistance, and blocking the cell cycle, thereby exerting anti-lung cancer activity. This article reviews and summarizes recent studies on the anti-lung cancer effects of TCM, and discusses the mechanisms by which TCM regulates the AMPK signaling pathway in the treatment of lung cancer, with the aim of providing ideas and references for the development of new clinical anti-lung cancer drugs.
7.TCM Treatment of Lung Cancer Based on AMPK Signaling Pathway: A Review
Chengzhi WANG ; Yifan LIU ; Zhenyao YANG ; Wenjun LI ; Xiaoqing ZHANG ; Dongdong LI ; Peimin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):291-298
As a common malignant tumor of the respiratory system, the incidence and mortality of lung cancer are still rising year by year. Its pathogenesis is complex, the prognosis is poor, and it seriously affects human physical and mental health. Although existing Western medical treatments can inhibit tumor growth to a certain extent and relieve patients' painful symptoms, problems such as postoperative recurrence and metastasis, numerous adverse reactions, and the tendency to develop drug resistance make the overall therapeutic effect unsatisfactory. Therefore, it is urgent to seek more efficient and safer treatments. Adenosine monophosphate-activated protein kinase (AMPK) signaling pathway can regulate the growth, differentiation, apoptosis, and autophagy of lung cancer cells, and is extensively involved in the occurrence and development of lung cancer, thus being regarded as an important target for anti-lung cancer therapy. Traditional Chinese medicine (TCM) exerts anti-lung cancer effects through multiple pathways, mechanisms, and targets, with advantages such as preventing postoperative recurrence and metastasis, alleviating the adverse reactions of radiotherapy and chemotherapy, and improving quality of life. TCM has therefore become a key approach in current anti-lung cancer treatment. Studies have found that active components of Chinese medicine, including flavonoids, saponins, polyphenols, and terpenes, as well as Chinese medicine compound prescriptions such as Guiqi Yiyuan extract, Qingzao Jiufei decoction, and Yiqi Fuzheng formula, have significant regulatory effects on AMPK and its interacting signaling pathways. These effects include inducing autophagy and apoptosis of lung cancer cells, modulating macrophage polarization, inhibiting epithelial-mesenchymal transition, reversing drug resistance, and blocking the cell cycle, thereby exerting anti-lung cancer activity. This article reviews and summarizes recent studies on the anti-lung cancer effects of TCM, and discusses the mechanisms by which TCM regulates the AMPK signaling pathway in the treatment of lung cancer, with the aim of providing ideas and references for the development of new clinical anti-lung cancer drugs.
8.Preparation and characterization of a novel self-assembled polypeptide hydrogel sustainably releasing platelet-rich plasma growth factors
Fengying QI ; Lei WANG ; Dongdong LI ; Shaoduo YAN ; Kun LIU ; Yizhe ZHENG ; Zixin HE ; Xiaoyang YI ; Donggen WANG ; Qiuxia FU ; Jun LIANG
Chinese Journal of Tissue Engineering Research 2024;28(15):2364-2370
BACKGROUND:Due to the sudden release and the rapid removal by proteases,platelet-rich plasma hydrogel leads to shorter residence times of growth factors at the wound site.In recent years,researchers have focused on the use of hydrogels to encapsulate platelet-rich plasma in order to improve the deficiency of platelet-rich plasma hydrogels. OBJECTIVE:To prepare self-assembled polypeptide-platelet-rich plasma hydrogel and to explore its effects on the release of bioactive factors of platelet-rich plasma. METHODS:The self-assembled polypeptide was synthesized by the solid-phase synthesis method,and the solution was prepared by D-PBS.Hydrogels were prepared by mixing different volumes of polypeptide solutions with platelet-rich plasma and calcium chloride/thrombin solutions,so that the final mass fraction of polypeptides in the system was 0.1%,0.3%,and 0.5%,respectively.The hydrogel state was observed,and the release of growth factors in platelet-rich plasma was detected in vitro.The polypeptide self-assembly was stimulated by mixing 1%polypeptide solution with 1%human serum albumin solution,so that the final mass fraction of the polypeptide was 0.1%,0.3%,and 0.5%,respectively.The flow state of the liquid was observed,and the rheological mechanical properties of the self-assembled polypeptide were tested.The microstructure of polypeptide(mass fraction of 0.1%and 0.001%)-human serum albumin solution was observed by scanning electron microscope and transmission electron microscope. RESULTS AND CONCLUSION:(1)Hydrogels could be formed between different volumes of polypeptide solution and platelet-rich plasma.Compared with platelet-rich plasma hydrogels,0.1%and 0.3%polypeptide-platelet-rich plasma hydrogels could alleviate the sudden release of epidermal growth factor and vascular endothelial growth factor,and extend the release time to 48 hours.(2)After the addition of human serum albumin,the 0.1%polypeptide group still exhibited a flowing liquid,the 0.3%polypeptide group was semi-liquid,and the 0.5%polypeptide group stimulated self-assembly to form hydrogel.It was determined that human serum albumin in platelet-rich plasma could stimulate the self-assembly of polypeptides.With the increase of the mass fraction of the polypeptide,the higher the storage modulus of the self-assembled polypeptide,the easier it was to form glue.(3)Transmission electron microscopy exhibited that the polypeptide nanofibers were short and disordered before the addition of human serum albumin.After the addition of human serum albumin,the polypeptide nanofibers became significantly longer and cross-linked into bundles,forming a dense fiber network structure.Under a scanning electron microscope,the polypeptides displayed a disordered lamellar structure before adding human serum albumin.After the addition of human serum albumin,the polypeptides self-assembled into cross-linked and densely arranged porous structures.(4)In conclusion,the novel polypeptide can self-assemble triggered by platelet-rich plasma and the self-assembly effect can be accurately adjusted according to the ratio of human serum albumin to polypeptide.This polypeptide has a sustained release effect on the growth factors of platelet-rich plasma,which can be used as a new biomaterial for tissue repair.
9. Involvement of intracellular organelle stress, autophagy and ferroptosis in cobalt chloride-induced vascular smooth muscle cell injury
Yan LEI ; Xiaoyong PENG ; Tao LI ; Liangming LIU ; Mengsheng DENG ; Dongdong ZHANG ; Yingguo ZHU ; Jianmin WANG ; Zhaoxia DUAN ; Guangming YANG
Chinese Journal of Clinical Pharmacology and Therapeutics 2024;29(1):1-10
AIM: To investigate the relationship between vascular smooth muscle cell (VSMC) injury, organelle stress response and autophagic cell death (autophagy) and ferroptosis induced by the chemical hypoxia inducer cobalt chloride (CoCl2) through the bioinformatics analysis and in vitro cell experimentation. METHODS: The dataset GSE119226 of VSMC treated with cobalt chloride was acquired from the gene expression database (GEO). The R language was used to investigate the relationship between CoCl2 treatment and organelle stress response (Golgi stress, endoplasmic reticulum stress) and two forms of cell death (ferroptosis and autophagic cell death). With primary cultured rat VSMC (rVSMC) and CoCl2-induced anoxia model, the changes in cell viability were detected by CCK-8 method, and reactive oxygen species (ROS) levels were measured using DCFH-DA method. The expression levels of HIF-1α (a key molecule in hypoxia), Golgi stress markers GM130 and p115, endoplasmic reticulum stress markers GRP78 and CHOP, autophagy markers LC3-II / LC3-I and Beclin1, and ferroptosis markers GPx4 and xCT were detected by Western blot. The effect of inducing or inhibiting organelle stress and cell death on the CoCl2-induced cell damage was also observed. RESULTS: Differentially expressed genes analysis of GSE119226 dataset showed that CoCl2 treatment of VSMCs had significant effects on organelle function and stress response, autophagy and ferroptosis-related genes, in which endoplasmic reticulum stress, protein processing in endoplasmic reticulum, regulation of Golgi to plasma membrane protein transport, autophagy / autophagic cell death, and ferroptosis pathways were remarkably enriched. The results of in vitro experiment showed that compared with normal rVSMC, cell viability was significantly decreased after CoCl2 treatment, as well as HIF-1α protein expression and ROS levels in rVSMCs were increased. In rVSMC treated with Co-Cl2, the expression levels of Golgi structural proteins GM130 and p115 (reflecting the occurrence of Golgi stress) were decreased, while the markers GRP78 and CHOP (reflecting the occurrence of endoplasmic reticulum stress) were increased. At the same time, CoCl2 treatment also reduced the expression of autophagy markers LC3-II/LC3-I and Beclin1 (indicating the decrease levels of autophagy), while the expression of ferroptosis markers GPx4 and xCT were decreased (indicating the occurrence of ferroptosis). Compared with CoCl2 treatment group, induced Golgi stress, endoplasmic reticulum stress, or ferroptosis could further reduce cell viability, while inhibition of these processes could improve cell viability. On the other hand, increasing the level of autophagy can improve the cell viability. CONCLUSION: Hypoxia induced by cobalt chloride can lead to VSMC injury. Golgi stress, endoplasmic reticulum stress, ferroptosis, and the reduction of autophagy level play an important role in it. Inhibition of organelle stress response and ferroptosis, or increase of autophagy level can improve VSMC injury caused by cobalt chloride.
10.Surgical plan selection and efficacy analysis in 32 cases of laryngotracheal stenosis
Yaqun LIU ; Qingxiang ZHANG ; Shuangba HE ; Jie MENG ; Mingjing CAI ; Dongdong HUANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2024;59(1):34-37
Objective:To explore the optimization of surgical procedures for laryngotracheal stenosis and its effect analysis.Methods:The data of 32 patients with acquired laryngotracheal stenosis who received surgical treatment from October 2015 to December 2021 were analyzed retrospectively. The age ranged from 19 to 72 years, with an average of (34.0±9.0) years. The medical history ranged from 1 to 32 months (median 3 months). As for etiology, there were 30 cases of iatrogenic laryngotracheal stenosis, including 20 cases of tracheal intubation and 10 cases of tracheotomy (7 cases of percutaneous tracheotomy and 3 cases of traditional tracheotomy). There were 1 case of laryngotracheal trauma and 1 case of airway Penicillium marneffei infection. According to Myer-Cotton grading system, grade Ⅳ stenosis was found in 14 cases, including 12 cases involving trachea and 2 cases involving trachea and subglottic area.There were 18 cases of grade Ⅲ, all of which involved the cervical trachea 5 cases failed in operation in other hospitals. According to stenosis grading, course of disease, primary disease control and the patient′s general condition, the surgical plan was determined individually. The operations of end-to-end anastomosis, circumferential tracheal partial resection, T-tube placement and CO 2 laser tracheal scar resection were performed respectively. The recovery of airway function and perioperative complications were observed one year after operation. Results:End-to-end anastomosis was performed in 16 cases, and partial circumferential tracheal resection in 2 cases, and tracheal granulation (scar) resection by CO 2 laser in 2 cases and T-tube insertion in 12 cases. Eighteen cases which performed end-to-end anastomosis, partial resection of circumferential trachea in and 2 cases which performed laser tracheal scar resection were all recovered airway function at one stage. After 1 year, 19 cases were cured and 1 case was effective. Of 12 patients with T tube implantation, 11 cases were successfully extubated after 6-12 months, 7 cases were cured after 1 year, 2 cases were effective and 3 cases were ineffective. Among the 3 cases of failure, 2 cases were successfully extubated by sleeve resection and end-to-end anastomosis in the second stage, and the other case refused to accept other treatment methods and the T-tube was placed again, and the tube was blocked and the patient survived. During the follow-up period, the total cure rate was 87.5%, the effective rate was 9.4%, and the total extubation rate was 96.9%.The most common complication was subcutaneous emphysema, accounting for 78% (25/32), but no serious mediastinal emphysema or pneumothorax occurred. In the T-tube implantation group, granulation tissue grew in different degrees around the neck wound after operation, and improved or disappeared after 6-9 months. Anterior cervical tracheal fistula occurred in 4 cases of T-tube implantation group after extubation, which were cured by sealing the stoma. There were no complications such as severe bleeding or perioperative death. Conclusion:When there were various factors, the optimization of the surgical plan according to the degree of stenosis, the course of disease, the control of primary disease and the general condition was an important guarantee to improve the curative effect of laryngotracheal stenosis.

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