1.Biological characteristics of hydroxyapatite artificial eye mount
Chinese Journal of Tissue Engineering Research 2007;0(44):-
Hydroxyapatite artificial eye mount has no toxicity,no sensitization and good histocompatibility.Its porous structure is beneficial for the ingrowth of new vessels and fibrous tissues,thereby it is the main implant of orbital reconstruction following enucleation.With the wide application in clinics,hydroxyapatite artificial eye mount also show some complications such as conjunctival humbling,erosion,split and artificial eye mount exposure.There are many causes for these complications and the most one is the stimulation and wearing of orbital soft tissues induced by crude implants,as well as the delaying in vessels.Using autologous or variant tissue for covering or encapsulating the anterior artificial eye mount,the mount will be strengthen and become smooth,thereby reducing the friction.Autologous sclera is superior to other encapsulating materials.
2.Diagnostic significance and clinical characteristics of esophageal minimal change in gastroesophageal reflux disease
Liyuan TAO ; Bin LYU ; Yihong FAN ; Lu ZHANG
Chinese Journal of Digestion 2015;35(5):315-318
Objective To evaluate the diagnostic significance of esophageal minimal change in gastroesophageal reflux disease (GERD) and explore its clinical characteristics.Methods From May to September in 2013,patients with minimal esophageal mucosa changes including esophageal mucosa rough,white secretin adhesion,erythema,edema,increased brittleness,blurring of the Z line or zigzag looking and blurring of paliform blood vessel,or patients with Los Angeles classification (LA) which were identified by endoscopy were enrolled.The subjects received gastroesophageal reflux disease questionnaire (GcrdQ) investigation and the related history were collected.The total score of GerdQ over eight was set as the criteria for GERD diagnosis.The R × C chi-square test was performed for statistical analysis.Results A total of 417 valid questionnaires were completed.Of which,202 cases were in minimal change group,176 were in LA A group and 36 were in LA-B group.The diagnostic rate of GERD in minimal change group was 20.3% (41/202),which was lower than that of LA-A group (74.4%,131/176) and LA-B group (83.3 %,30/36),and the differences were statistically significant (x2 =129.144,P<0.01).The incidences of heartburn in minimal change group,LA A group and LA-B group were 25.7% (52/202),62.5% (110/176) and 86.1% (31/36),respectively.The incidences of reflux were 29.7% (60/202),67.6% (119/176) and 75.0% (27/36),respectively.The incidences of non cardiac chest pain were 5.4% (11/202),22.2% (39/176) and 22.2%(8/36),respectively.The incidences of heartburn,reflux and non cardiac chcst pain of minimal change group were all lower than those of LA A group and LA-B group,and the differences were statistically significant (x2 =75.775,64.120,24.016;all P<0.01).The leading cause of endoscopy examination in minimal change group was abdominal discomfort,which accounted for 49.0%(99/202).The leading causes of endoscopy examination in LA A group and LA-B group were esophageal symptoms,which accounted for 52.8% (93/176) and 61.1% (22/36).Conclusions The diagnostic rate of GERD in patients of minimal change group is low and the clinical symptoms are not typical,which is insufficient for diagnosis of GERD and needed further investigation.
3.Protein Components of Lewy Bodies (LBs) Identified from Synthetic Proteasome Inhibitor (PSI)-induced Inclusions in PC12 Cells by MS Analysis
Xingan LI ; Yingjiu ZHANG ; Yihong HU ; Ming CHANG ; Tao LIU ; Danping WANG ; Yu ZHANG ; Linsen HU
Chinese Journal of Biochemistry and Molecular Biology 2008;24(10):906-915
Proteomic analysis is an effective way to identify protein constituent in Lewy bedy-like inclusions (or aggresome) in vitro. Exposure to synthetic proteasome inhibitor (PSI, 10 μmol/L) for 48 hours was used to induce the formation of cytoplasmic proteineous inclusions (termed as PSi-induced inclusions) in PC12 cells.The proteomic approaches of biochemical fractionation, two-dimensional electrophoresis (2-D) and identification via peptide mass fingerprints (PMF) were deployed, and 20 protein components of LBs were identified,i ncluding 2 proteins involved in the production of synaptic neurotransmitter, 6 subunits of the 26 S proteasome,2 cytoskeleton proteins, 2 subunits of mitochondrial complexes, 1 anti-oxidant protein, and 7 chaperone proteins and (or) chaperone-like proteins. The results suggested that these LB protein components might had been recruited in PSI-induced inclusions formed in PC12 cells under the condition of proteasome inhibition.
4.Eukaryotic Translation Factors Resided in PSI-induced Inclusions in PC12
Xingan LI ; Yingjiu ZHANG ; Yihong HU ; Ming CHANG ; Tao LIU ; Danping WANG ; Lei ZHANG ; Yu ZHANG ; Linsen HU
Chinese Journal of Biochemistry and Molecular Biology 2008;24(1):20-29
Lewy body (LB), an eosinophilic inclusion localized in the neuronal perikaryon, consists of a wide range of proteins, including the consistent organization and the selective composition. Treatment of PC12 cells with synthetic proteasome inhibitor (PSI) at 10 μmol/L for 48 hours induced the formation of inclusions, which were detected by eosin staining and immunostaining for α-synuclein. To investigate the potential new components of PSI-induced inclusions in vitro, pure intact inclusions were successfully obtained by fractionation and subjected to two-dimensional electrophoresis (2-DE) then analyzed with unequivocal matrixassisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Eukaryotic translation initiation factor 3 subunit 5 (eIF-3ε), eukaryotic elongation factor 2 (eEF-2) and mitochondrial elongation factor Tu (EF-Tumt) were identified. The results suggest that 3 eukaryotic translation factors recruited in PSI-induced inclusions may influence formation of the intermediate organelles following the inhibition of proteasomes.
5.Current Status and Clinical Effectiveness of Anticoagulant Therapy for In-hospital Patients With Acute Coronary Syndromes at County Hospitals of China
Boya SUN ; Yangfeng WU ; Yihong SUN ; Shenshen LI ; Xian LI ; Min LI ; Aihua ZHANG ; Tao WU ; Xin DU ; Lingzhi KONG ; Yong HUO ; Dayi HU ; Runlin GAO
Chinese Circulation Journal 2016;31(6):536-540
Objective: To analyze the current status of anticoagulant therapy for in-hospital patients with acute coronary syndromes (ACS) at county hospitals of China and to explore the relationship between anticoagulant therapy and clinical outcomes in real medical environment. Methods: 99 county hospitals from15 provinces of China were selected for this prospective registry study and 12373 eligible ACS patients without interventional therapy admitted from 2011-09 to 2014-06 were enrolled. The basic condition, previous history, initial assessment, anticoagulants (unfractionated heparin/low molecular weight heparin) application, severe bleeding events and in-hospital mortality were collected in all patients. Multiple logistic regression analysis was conducted to explore the relationship between anticoagulant therapy and clinical outcomes including in-hospital mortality, severe bleeding events and combined endpoints; meanwhile, possible confounders were adjusted. Results: A total of 9985/12373 ACS patients received anticoagulant therapy and 2388 did not. Anticoagulant therapy was conducted in 92.7% (4237/4570) patients with ST-segment elevation myocardial infarction (STEMI), 90.8% (1639/1805) with non-ST-segment elevation myocardial infarction (NSTEMI) and 68.5% (4109/5998) with unstable angina (UA); there were differences by regions and genders,P<0.01and no difference by age. Multivariable analysis indicated that anticoagulant therapy decreased the risk of in-hospital mortality in ACS patients at 53% (OR= 0.47, 95% CI 0.36-0.62), such reduction in STEMI patients was at 55% (OR=0.45, 95% CI 0.32-0.64), in NSTEMI patients was at 58% (OR=0.42, 95% CI 0.24-0.75); while it had no real effect in UA patients,P>0.05. Meanwhile, it did not increase the risk of severe bleeding events in ACS patients,P>0.05. Conclusion: Anticoagulant therapy has been widely used in STEMI and NSTEMI patients at county hospitals of China and obviously decreased the in-hospital mortality; while the application rate was relatively low in UA patients. The general safety of anticoagulant therapy has been good in ACS patients.
6.Gender Disparity and Influencing Factors for In-hospital Mortality in Patients With ST-segment Elevation Myocardial Infarction at Secondary Hospitals in China
Ningbo MA ; Yangfeng WU ; Shenshen LI ; Min LI ; Tao WU ; Xin DU ; Yihong SUN ; Gaoqiang XIE ; Lingzhi KONG ; Wei GAO ; Yong HUO ; Dayi HU ; Runlin GAO
Chinese Circulation Journal 2016;31(10):957-961
Objective: To understand the gender disparity and influencing factors for in-hospital mortality in patients with ST-segment elevation myocardial infarction (STEMI) at secondary hospitals in China. Methods: A total of 5525 in-hospital STEMI patients from 99 secondary hospitals of 15 provinces or autonomous regions between 2011-09 to 2014-06 were recruited including 1649 female and 3876 male. The in-hospital mortalities were compared between 2 genders and the relevant inlfuencing factors were studied by multiple Logistic regression analysis. Results: There were about 29.8% female and 70.2% male STEMI patients were studied. The in-hospital mortalities in female and male were 13.2% and 5.9%,P<0.01; gender disparity was obviously existing regardless of age, history of MI, hypertension and diabetes mellitus. The mortality in female was higher than male even without diseases history and cardiovascular risk factors. Compared with male gender, female patients were usually having elder age and likely complicated with cardiovascular risk factors; they were with lower incidence to receive ECG, drug therapy and thrombolysis within 10 minutes of admission. With adjusted confounding factors, multiple regression analysis presented that female STEMI patients had the higher mortality than male (OR:1.7, 95% CI:1.4-2.0). Conclusion: The in-hospital mortality for STEMI patients was higher in female than male at secondary hospitals in China. Female patients were usually having elder age, complicated with more cardiovascular risk factors, while with less chances to receive ECG, drug therapy and thrombolysis within 10 minutes of admission.
7.In Vitro and In Vivo Study on the Effect of Lysosome-associated Protein Transmembrane 4 Beta on the Progression of Breast Cancer
Deyou TAO ; Junqing LIANG ; Yihong PAN ; Yanting ZHOU ; Ying FENG ; Lin ZHANG ; Jingjing XU ; Hui WANG ; Ping HE ; Jie YAO ; Yang ZHAO ; Qinjie NING ; Wen WANG ; Wei JIANG ; Jing ZHENG ; Xia WU
Journal of Breast Cancer 2019;22(3):375-386
PURPOSE: Although the effect of lysosome-associated protein transmembrane 4 beta (LAPTM4B) on the proliferation, migration, and invasion of breast cancer (BC) cells has already been studied, its specific role in BC progression is still elusive. Here, we evaluated the effect of different levels of LAPTM4B expression on the proliferation, invasion, adhesion, and tumor formation abilities of BC cells in vitro, as well as on breast tumor progression in vivo. METHODS: We investigated the influence of LAPTM4B expression on MCF-7 cell proliferation, invasion, adhesion, and tube formation abilities in vitro through its overexpression or knockdown and on breast tumor progression in vivo. RESULTS: Cell growth curves and colony formation assays showed that LAPTM4B promoted the proliferation of breast tumor cells. Cell cycle analysis results revealed that LAPTM4B promoted the entry of cells from the G1 into the S phase. Transwell invasion and cell extracellular matrix adhesion assays showed that LAPTM4B overexpression increased the invasion and adhesion capabilities of MCF-7 cells. More branches were observed in MCF-7 cells overexpressing LAPTM4B under an electron microscope. In comparison with LAPTM4B overexpression, LAPTM4B knockdown decreased the expression of vascular endothelial growth factor-A and significantly inhibited the vasculogenic tube formation ability of tumors. These results were also verified with western blot analysis. CONCLUSION: LAPTM4B promoted the proliferation of MCF-7 cells through the downregulation of p21 (WAF1/CIP1) and caspase-3, and induced cell invasion, adhesion, and angiogenesis through the upregulation of hypoxia-inducible factor 1 alpha, matrix metalloproteinase 2 (MMP2), and MMP9 expression. This specific role deems LAPTM4B as a potential therapeutic target for BC treatment.
Blotting, Western
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Breast Neoplasms
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Breast
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Caspase 3
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Cell Cycle
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Disease Progression
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Down-Regulation
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Extracellular Matrix
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Hypoxia-Inducible Factor 1
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In Vitro Techniques
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Matrix Metalloproteinase 2
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MCF-7 Cells
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S Phase
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Up-Regulation
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Vascular Endothelial Growth Factor A
8.Effects of different drying methods on the quality of Chrysanthemum morifolium
Jiayi SHI ; Luoxing PAN ; Yihong TAO ; Qing ZHAO
China Pharmacy 2024;35(19):2365-2371
OBJECTIVE To investigate the effects of different drying methods on the quality of Chrysanthemum morifolium, and to provide a basis for the harvesting and processing of C. morifolium. METHODS Twenty-five samples were obtained by drying the fresh products using 7 types and 25 kinds of drying methods, and the unqualified samples were removed by taking their appearance and moisture content as elimination indexes. The contents of six active ingredients (chlorogenic acid, luteoloside, 3,5- O-dicaffeoylquinic acid, quercetin, lignoceroside, baicalin) were used as indicators, and combined with principal component analysis (PCA), partial least square method-discriminant analysis (PLS-DA), PCA comprehensive score ranking and the best samples obtained from each drying method to select 6 experimental samples comprehensively. The quality of 6 kinds of samples was evaluated using the activities and stability of oxidation-related enzymes (polyphenol oxidase, peroxidase) and the microscopic morphology of the petal surface as evaluation indexes. RESULTS The results of PCA and PLS-DA showed significant differences in the quality of samples obtained by different drying methods, and chlorogenic acid, 3,5-O-dicaffeoylquinic acid and baicalin might be the main reasons for the differences among the samples. The herbs treated with 100 ℃ steam fixation for 1 min combined with blast drying at 50 ℃ for 4 hours had the highest comprehensive score of active ingredients. The oxidation-related enzymes in C. morifolium treated with microwave 800 W fixation for 1 minute followed by 50 ℃ air drying for 4 hours and 100 ℃ steam sterilization for 1 minute followed by 50 ℃ drying for 4 hours were completely inactivated, and the stability was better than that of samples obtained by other drying methods. The observation results of the microstructure of the petal surface showed that the sample obtained by drying at a microwave power of 400 W for 6 minutes had the highest integrity and flatness compared to the above two samples. CONCLUSIONS From the perspective of finished product quality and drying efficiency, 100 ℃ steam fixation for 1 min combined with blast drying at 50 ℃ for 4 hours is the best drying method for C. morifolium.
9.The 10-year outcome and prognostic factors of laparoscopic D 2 radical distal gastrectomy for locally advanced gastric cancer: a CLASS multicenter study
Hao CHEN ; Peiwu YU ; Changming HUANG ; Jiankun HU ; Gang JI ; Zhiwei JIANG ; Xiaohui DU ; Dong WEI ; Hongbo WEI ; Taiyuan LI ; Yong JI ; Jinlong YU ; Weidong ZANG ; Yihong SUN ; Kaixiong TAO ; Jiafu JI ; Jiang YU ; Yanfeng HU ; Hao LIU ; Guoxin LI
Chinese Journal of Digestive Surgery 2022;21(3):362-374
Objective:To investigate the 10-year outcome and prognostic factors of laparo-scopic D 2 radical distal gastrectomy for locally advanced gastric cancer. Methods:The retrospec-tive cohort study was conducted. The clinicopathological data of 652 patients with locally advanced gastric cancer who were admitted to 16 hospitals from the multicenter database of laparoscopic gastric cancer surgery in the Chinese Laparoscopic Gastrointestinal Surgery Study (CLASS) Group, including 214 cases in the First Affiliated Hospital of Army Medical University, 191 cases in Fujian Medical University Union Hospital, 52 cases in Nanfang Hospital of Southern Medical University, 49 cases in West China Hospital of Sichuan University, 43 cases in Xijing Hospital of Air Force Medical University, 25 cases in Jiangsu Province Hospital of Chinese Medicine, 14 cases in the First Medical Center of the Chinese PLA General Hospital, 12 cases in No.989 Hospital of PLA, 12 cases in the Third Affiliated Hospital of Sun Yat-Sen University, 10 cases in the First Affiliated Hospital of Nanchang University, 9 cases in the First People's Hospital of Foshan, 7 cases in Zhujiang Hospital of Southern Medical University, 7 cases in Fujian Medical University Cancer Hospital, 3 cases in Zhongshan Hospital of Fudan University, 2 cases in Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 2 cases in Peking University Cancer Hospital & Institute, from February 2004 to December 2010 were collected. There were 442 males and 210 females, aged (57±12)years. All patients underwent laparoscopic D 2 radical distal gastrectomy. Observation indicators: (1) surgical situations; (2) postoperative pathological examination; (3) postoperative recovery and complications; (4) follow-up; (5) prognostic factors analysis. Follow-up was conducted by outpatient examination and telephone interview to detect the tumor recurrence and metastasis, postoperative survival of patients up to March 2020. Measurement data with normal distribution were represented as Mean± SD, and measurement data with skewed distribution were represented as M( Q1, Q3) or M(range). Count data were described as absolute numbers or percen-tages, and comparison between groups was conducted using the chi-square test. Comparison of ordinal data was analyzed using the rank sum test. The life table method was used to calculate survival rates and the Kaplan-Meier method was used to draw survival curves. Log-Rank test was used for survival analysis. Univariate and multivariate analyses were analyzed using the COX hazard regression model. Results:(1) Surgical situations: among 652 patients, 617 cases underwent D 2 lymph node dissection and 35 cases underwent D 2+ lymph node dissection. There were 348 cases with Billroth Ⅱ anastomosis, 218 cases with Billroth Ⅰ anastomosis, 25 cases with Roux-en-Y anastomosis and 61 cases with other digestive tract reconstruction methods. Twelve patients had combined visceral resection. There were 569 patients with intraoperative blood transfusion and 83 cases without blood transfusion. The operation time of 652 patients was 187(155,240)minutes and volume of intraoperative blood loss was 100(50,150)mL. (2) Postoperative pathological examina-tion: the maximum diameter of tumor was (4.5±2.0)cm of 652 patients. The number of lymph node dissected of 652 patients was 26(19,35), in which the number of lymph node dissected was >15 of 570 cases and ≤15 of 82 cases. The number of metastatic lymph node was 4(1,9). The proximal tumor margin was (4.8±1.6)cm and the distal tumor margin was (4.5±1.5)cm. Among 652 patients, 255 cases were classified as Borrmann type Ⅰ-Ⅱ, 334 cases were classified as Borrmann type Ⅲ-Ⅳ, and 63 cases had missing Borrmann classification data. The degree of tumor differentiation was high or medium in 171 cases, low or undifferentiated in 430 cases, and the tumor differentiation data was missing in 51 cases. There were 123, 253 and 276 cases in pathological stage T2, T3 and T4a, respectively. There were 116, 131, 214 and 191 cases in pathological stage N0, N1, N2 and N3, respectively. There were 260 and 392 cases in pathological TNM stage Ⅱ and Ⅲ, respectively. (3) Postoperative recovery and complications: the time to postoperative first out-of-bed activities, time to postoperative first flatus, time to the initial liquid food intake, duration of postoperative hospital stay of 652 patients were 3(2,4)days, 4(3,5)days, 5(4,6)days, 10(9,13)days, respectively. Among 652 patients, 69 cases had postoperative complications. Clavien-Dindo grade Ⅰ-Ⅱ, grade Ⅲa, grade Ⅲb, and grade Ⅳa complications occurred in 60, 3, 5 and 1 cases, respectively (some patients could have multiple complications). The duodenal stump leakage was the most common surgical complication, with the incidence of 3.07%(20/652). Respiratory complication was the most common systemic complication, with the incidence of 2.91%(19/652). All the 69 patients were recovered and discharged successfully after treatment. (4) Follow-up: 652 patients were followed up for 110-193 months, with a median follow-up time of 124 months. There were 298 cases with postoperative recurrence and metastasis. Of the 255 patients with the time to postoperative recurrence and metastasis ≤5 years, there were 21 cases with distant metastasis, 69 cases with peritoneal metastasis, 37 cases with local recurrence, 52 cases with multiple recurrence and metastasis, 76 cases with recurrence and metastasis at other locations. The above indicators were 5, 9, 10, 4, 15 of the 43 patients with the time to postoperative recurrence and metastasis >5 years. There was no significant difference in the type of recurrence and metastasis between them ( χ2=5.52, P>0.05). Cases in pathological TNM stage Ⅱ and Ⅲ were 62 and 193 of the patients with the time to postoperative recurrence and metastasis ≤5 years, versus 23 and 20 of the patients with the time to postoperative recurrence and metastasis >5 years, showing a significant difference in pathological TNM staging between them ( χ2=15.36, P<0.05). Cases in pathological stage T2, T3, T4a were 42, 95, 118 of the patients with the time to postoperative recurrence and metastasis ≤5 years, versus 9, 21, 13 of the patients with the time to postoperative recurrence and metastasis >5 years, showing no significant difference in pathological T staging between them ( Z=-1.80, P>0.05). Further analysis showed no significant difference in cases in pathological stage T2 or T3 ( χ2=0.52, 2.08, P>0.05) but a significant difference in cases in pathological stage T4a between them ( χ2=3.84, P<0.05). Cases in pathological stage N0, N1, N2, N3 were 19, 44, 85, 107 of the patients with the time to postoperative recurrence and metastasis ≤5 years, versus 12, 5, 18, 8 of the patients with the time to postoperative recurrence and metastasis >5 years, showing a significant difference in pathological N staging between them ( Z=-3.34, P<0.05). Further analysis showed significant differences in cases in pathological stage N0 and N3 ( χ2=16.52, 8.47, P<0.05) but no significant difference in cases in pathological stage N1 or N2 ( χ2=0.85, 1.18, P>0.05). The median overall survival time was 81 months after surgery and 10-year overall survival rate was 46.1% of 652 patients. The 10-year overall survival rates of patients in TNM stage Ⅱ and Ⅲ were 59.6% and 37.5%, respectively, showing a significant difference between them ( χ2=35.29, P<0.05). In further analysis, the 10-year overall survival rates of patients in pathological TNM stage ⅡA, ⅡB, ⅢA, ⅢB and ⅢC were 65.6%, 55.8%, 46.9%, 37.1% and 24.0%, respectively, showing a significant difference between them ( χ2=55.06, P<0.05). The 10-year overall survival rates of patients in patholo-gical stage T2, T3 and T4a were 55.2%, 46.5% and 41.5%, respectively, showing a significant difference between them ( χ2=8.39, P<0.05). The 10-year overall survival rates of patients in patholo-gical stage N0, N1, N2 and N3 were 63.7%, 56.2%, 48.5% and 26.4%, respectively, showing a signifi-cant difference between them ( χ2=54.89, P<0.05). (5) Prognostic factors analysis: results of univariate analysis showed that age, maximum diameter of tumor, degree of tumor differentiation as low or undifferentiated, pathological TNM staging, pathological T staging, pathological stage N2 or N3, post-operative chemotherapy were related factors for the 10-year overall survival rate of locally advanced gastric cancer patients undergoing laparoscopic D 2 radical distal gastrectomy ( hazard ratio=1.45, 1.64, 1.37, 2.05, 1.30, 1.68, 3.08, 0.56, 95% confidence interval as 1.15-1.84, 1.32-2.03, 1.05-1.77, 1.62-2.59, 1.05-1.61, 1.17-2.42, 2.15-4.41, 0.44-0.70, P<0.05). Results of multivariate analysis showed that maximum diameter of tumor >4 cm, low-differentiated or undifferentiated tumor, pathological TNM stage Ⅲ were independent risk factors for the 10-year overall survival rate of locally advanced gastric cancer patients undergoing laparoscopic D 2 radical distal gastrectomy ( hazard ratio=1.48,1.44, 1.81, 95% confidence interval as 1.19-1.84, 1.11-1.88, 1.42-2.30, P<0.05) and postoperative chemotherapy was a independent protective factor for the 10-year overall survi-val rate of locally advanced gastric cancer patients undergoing laparoscopic D 2 radical distal gastrec-tomy ( hazard ratio=0.57, 95% confidence interval as 045-0.73, P<0.05). Conclusions:Laparoscopic assisted D 2 radical distal gastrectomy for locally advanced gastric cancer has satisfactory 10-year oncologic outcomes. A high proportion of patients in pathological TNM stage Ⅲ, pathological stage T4a, pathological stage N3 have the time to postoperative recurrence and metastasis ≤5 years, whereas a high proportion of patients in pathological TNM stage Ⅱ or pathological stage N0 have the time to postoperative recurrence and metastasis >5 years. Maximum diameter of tumor >4 cm, low-differentiated or undifferentiated tumor, pathological TNM stage Ⅲ are independent risk factors for the 10-year overall survival rate of locally advanced gastric cancer patients undergoing laparos-copic D 2 radical distal gastrectomy. Postoperative chemotherapy is a independent protective factor for the 10-year overall survival rate of locally advanced gastric cancer patients undergoing laparos-copic D 2 radical distal gastrectomy.