Objective:To analyze the correlation between mental health status and metabolic syndrome (MetS) in health checkup people.Methods:It was a cross-sectional study, 2 920 participants who received health checkup in the Health Examination Center of Peking University Third Hospital from January 2019 to December 2023 were selected using cluster sampling method. Their general information, physical examination, biochemical indicators, body composition, and self-evaluation scores on the Symptom Checklist-90 (SCL-90) were collected. According to the inclusion and exclusion criteria, a total of 2 813 study subjects were included, and divided into the MetS group and the non-MetS group based on whether they had MetS. The differences in general demographic information, body composition, blood biochemistry, and SCL-90 scores between the two groups were compared. Binary Logistic regression analysis was used to explore the correlation between mental health status and MetS.Results:Of the 2 813 subjects included, 1 576 were males (56.0%) and 1 237 were females (44.0%), with an average age of (41.7±11.0) years, the MetS group had 586 cases (20.8%) and the non-MetS group had 2 227 cases (79.2%). The MetS group had higher levels of age, body mass index, waist circumference, systolic blood pressure, diastolic blood pressure, total cholesterol, triglycerides, low density lipoprotein cholesterol (LDL-C), fasting blood glucose, glycosylated hemoglobin (HbA 1c), free thyroxine(FT4), total triiodothyronine (TT3), free triiodothyronine (FT3), waist-to-hip ratio, visceral fat area, body fat percentage, uric acid/creatinine, homocysteine (Hcy), aspartate aminotransferases (AST), and alanine transaminase (ALT) levels, as well as higher scores for somatization, hostility, paranoia, and other factor compared to the non-MetS group (all P<0.05), while high density lipoprotein cholesterol (HDL-C) and estimated glomerular filtration rate (eGFR) levels were lower than those in the non-MetS group (all P<0.05). The proportion of male, and the positive rates of SCL-90, somatization, interpersonal sensitivity, hostility, paranoia and other factor in the MetS group were higher than those in the non-MetS group (all P<0.05). Multifactorial analysis showed that individuals with a positive SCL-90 assessment had a 1.34 times higher risk of MetS than those with a negative assessment ( OR=1.34, 95% CI: 1.06-1.68; P=0.014). Among them, individuals with positive somatization ( OR=2.02, 95% CI: 1.25-3.28; P=0.004) and hostility ( OR=1.61, 95% CI: 1.02-2.56; P=0.042) had increased risk of MetS. Conclusion:Poor mental health status increases the risk of MetS.

Objective:To explore the correlation between normalized grip strength (NGS) and normal weight obesity (NWO) in the population undergoing health check-ups.Methods:It was a cross-sectional study. A cluster sampling method was adopted to consecutively select 4 104 subjects who completed general health check-ups, body composition tests, and grip strength tests at the Medical Examination Center of Peking University Third Hospital from January 2019 to December 2023. The general information, physical examination results, biochemical indicators, body composition, and grip strength test results were collected. The subjects were grouped by gender and whether they had NWO (male: NWO group 314 cases, normal control group 690 cases; female: NWO group 834 cases, normal control group 2 266 cases). The differences in various indicators between the NWO group and the normal control group were compared by using t-tests, χ 2 tests, or Mann-Whitney U tests. The subjects were divided into four groups with the quartiles of NGS (Q 1-Q 4 groups), and binary logistic regression analysis was used to explore the correlation between the NGS and NWO. The receiver operating characteristic (ROC) curve was used to evaluate the optimal cut-off point of the NGS for diagnosing NWO. Results:Among the 4 104 subjects included in the analysis, 1 148 (28.0%) had NWO. The risk of NWO in both males and females increased with the decrease of NGS. Compared with the Q 4 group, the risk of NWO in the Q 2 and Q 1 groups of males increased by 2.600 times ( OR=2.600, 95% CI:1.556-4.343) and 4.350 times ( OR=4.350, 95% CI: 2.618-7.229), respectively; the risk of NWO in the Q 3, Q 2, and Q 1 groups of females increased by 2.024 times ( OR=2.024, 95% CI: 1.322-3.099), 4.265 times ( OR=4.265, 95% CI: 2.856-6.371), and 7.395 times ( OR=7.395, 95% CI: 4.991-10.956), respectively (all P<0.05). The optimal cut-off point of the NGS for diagnosing NWO in males and females was 0.636 2 and 0.472 2, respectively. Conclusions:The NGS is negatively correlated with the risk of NWO. Evaluation of the NGS can provide a reference for the early diagnosis and prevention of NWO.

Objective:To construct a health management mode for functional community groups and evaluate its health management effect.Methods:This study was a non-randomized controlled trial. A cluster sampling method was adopted to select 3 352 subjects who completed three health examinations at the Physical Examination Center of Peking University Third Hospital from January 2022 to October 2024 and received health management for two consecutive years from a certain functional community (an enterprise) in Beijing as the research subjects. A health management mode for functional community groups was constructed, and a cohort of the population was established. A health management platform was built, and the research subjects were included in the health management system. Comprehensive interventions were carried out using multiple methods, including disease risk assessment, daily monitoring and reminders, exercise and nutrition assessment and intervention, personal health consultation, and health science popularization knowledge push. The subjects were classified and analyzed based on general information such as age and gender. The changes in systolic blood pressure, diastolic blood pressure, fasting blood glucose, total cholesterol, low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were assessed using One-way Repeated Measures Analysis of Variance before the intervention and at 1 and 2 years after the intervention. The changes in triglycerides were assessed using Generalized Estimating Equations before the intervention and at 1 and 2 years after the intervention.Results:The systolic blood pressure, total cholesterol, and LDL-C levels of the total population showed a linear decreasing trend after the intervention (all P0.001). The HDL-C level showed an overall upward trend after the intervention [(1.45±0.32) vs (1.39±0.30) vs (1.47±0.33) mmol/L, F=12.746, P0.001]. However, there was no linear change trend in diastolic blood pressure, fasting blood glucose, and triglycerides after the intervention (all P0.05). The systolic blood pressure, total cholesterol and LDL-C levels of both men and women showed a linear decreasing trend after the intervention. For men, systolic blood pressure [(128.6±16.1) vs (127.6±16.3) vs (126.5±15.5) mmHg (1 mmHg=0.133 kPa); F=33.488, P0.001], total cholesterol [(5.29±1.02) vs (5.07±1.00) vs (4.94±1.03) mmol/L; F=286.525, P0.001], and LDL-C [(3.45±0.86) vs (3.43±0.84) vs (3.33±0.83) mmol/L; F=55.419, P0.001] all decreased. For women, systolic blood pressure [(118.9±15.6) vs (117.5±15.6) vs (117.2±15.8) mmHg; F=34.188, P0.001], total cholesterol [(5.13±0.94) vs (4.96±0.90) vs (4.85±0.90) mmol/L; F=274.080, P0.001], and LDL-C [(3.13±0.79) vs (3.10±0.76) vs (3.10±0.75) mmol/L; F=6.861, P=0.009] also decreased. The HDL-C level of men showed an overall upward trend after the intervention [(1.30±0.26) vs (1.25±0.25) vs (1.32±0.28) mmol/L; F=6.866, P0.05]. For men and women, diastolic blood pressure, fasting blood glucose and triglyceride levels showed no linear change trend after the intervention (all P0.05). The systolic blood pressure and total cholesterol levels of all age groups showed a linear decreasing trend after the intervention(all P0.001). In the 50-59 age group, diastolic blood pressure showed a linear decreasing trend after intervention [(81.6±11.6) vs (80.1±11.6) vs (79.9±11.6) mmHg; F=7.043, P0.05]. In the 40-49 age group, triglyceride showed an overall decreasing trend after intervention [1.29(0.91-2.01) vs 1.27(0.88-1.91) vs 1.27(0.92-1.89) mmol/L; Wald χ 2=10.062, P0.05]. In the 30-39 age group, LDL-C showed a linear decreasing trend after intervention [(3.23±0.80) vs (3.20±0.79) vs (3.19±0.77) mmol/L; F=7.702, P0.05]. In the 40-49 age group, LDL-C also showed a linear decreasing trend after intervention [(3.39±0.84) vs (3.36±0.82) vs (3.30±0.80) mmol/L; F=22.801, P0.001]. In the 50-59 age group, LDL-C showed a linear decreasing trend after intervention [(3.38±0.92) vs (3.32±0.91) vs (3.15±0.88) mmol/L; F=27.920, P0.001]. In the 30-39 age group, HDL-C showed an overall increasing trend after intervention [(1.46±0.33) vs (1.39±0.31) vs (1.48±0.34) mmol/L; F=10.047, P0.05]. In the 40-49 age group, HDL-C also showed an overall increasing trend after intervention [(1.45±0.30) vs (1.40±0.30) vs (1.47±0.32) mmol/L; F=10.118, P0.05]. However, there was no linear change trend in fasting blood glucose and triglyceride levels in all age groups after intervention ( F=1.169, 2.643, 0.663, 0.001, all P0.05). Conclusion:The functional community group health management mode constructed in this study has a good effect.

Objective To investigate the levels of serum adrenomedullin precursor(pro-ADM),soluble leukocyte differentiation antigen 14 subtype(presepsin),and eosinophil chemotactic factor-1(Eotaxin-1)in patients with acute stroke(AS)complicated with pulmonary infection and their relationship with prognosis.Methods A total of 146 patients with AS admitted to the hospital from January 2022 to January 2024 were selected as the research subjects.According to whether the research subjects were complicated with pulmonary infection,they were divided into the infection group with 54 cases and the non-infection group with 92 cases.In addition,100 healthy individuals who underwent physical examinations in the hospital during the same period were selected as the control group.The prognosis of patients was evaluated using the modified Rankin scale score,which was divided into good prognosis and poor prognosis.The levels of serum pro-ADM,presepsin,Eotaxin-1 and C-reactive protein(CRP)were detected by enzyme-linked immunosorbent assay.Multivariate Logistic regression was used to analyze the influencing factors of AS complicated with pulmonary infection,and the receiver operating characteristic(ROC)curve was plotted to analyze the diagnostic value of serum CRP,pro-ADM,presepsin,and Eotaxin-1 levels for patients with AS complicated with pulmonary infection.Compare the levels of serum pro-ADM,presepsin and Eotaxin-1 in patients with different prognoses.The rela-tionship between the levels of serum pro-ADM,presepsin and Eotaxin-1 and the prognosis of patients was ana-lyzed by the Kaplan-Meier method.Results The levels of smoking history and serum CRP,pro-ADM,presep-sin,and Eotaxin-1 in the infection group were higher than those in the non-infection group and the control group,and the difference was statistically significant(P<0.05).The results of multivariate Logistic regres-sion analysis showed that the levels of serum CRP,pro-ADM,presepsin and Eotaxin-1 were the influencing factors of AS complicated with pulmonary infection(P<0.05).The results of the ROC curve analysis show that the area under the curve(AUC)of the combined diagnosis of AS complicated with pulmonary infection by serum pro-ADM,presepsin and Eotaxin-1 levels was higher than AUC of the individual diagnosis of CRP,pro-ADM,presepsin and Eotaxin-1(Z=3.921,2.445,2.825,3.076,P<0.05).The levels of serum pro-ADM,presepsin and Eotaxin-1 in patients with poor prognosis were higher than those in patients with good progno-sis,and the difference was statistically significant(P<0.05).The results of survival analysis by the Kaplan-Meier method showed that the survival rate of patients with high expression of serum pro-ADM,presepsin,and Eotaxin-1 was lower than that of patients with low expression(P<0.05).Conclusion The levels of ser-um pro-ADM,presepsin and Eotaxin-1 in patients with AS complicated with pulmonary infection are related to their prognosis.

Objective:To analyze the correlation between mental health status and metabolic syndrome (MetS) in health checkup people.Methods:It was a cross-sectional study, 2 920 participants who received health checkup in the Health Examination Center of Peking University Third Hospital from January 2019 to December 2023 were selected using cluster sampling method. Their general information, physical examination, biochemical indicators, body composition, and self-evaluation scores on the Symptom Checklist-90 (SCL-90) were collected. According to the inclusion and exclusion criteria, a total of 2 813 study subjects were included, and divided into the MetS group and the non-MetS group based on whether they had MetS. The differences in general demographic information, body composition, blood biochemistry, and SCL-90 scores between the two groups were compared. Binary Logistic regression analysis was used to explore the correlation between mental health status and MetS.Results:Of the 2 813 subjects included, 1 576 were males (56.0%) and 1 237 were females (44.0%), with an average age of (41.7±11.0) years, the MetS group had 586 cases (20.8%) and the non-MetS group had 2 227 cases (79.2%). The MetS group had higher levels of age, body mass index, waist circumference, systolic blood pressure, diastolic blood pressure, total cholesterol, triglycerides, low density lipoprotein cholesterol (LDL-C), fasting blood glucose, glycosylated hemoglobin (HbA 1c), free thyroxine(FT4), total triiodothyronine (TT3), free triiodothyronine (FT3), waist-to-hip ratio, visceral fat area, body fat percentage, uric acid/creatinine, homocysteine (Hcy), aspartate aminotransferases (AST), and alanine transaminase (ALT) levels, as well as higher scores for somatization, hostility, paranoia, and other factor compared to the non-MetS group (all P<0.05), while high density lipoprotein cholesterol (HDL-C) and estimated glomerular filtration rate (eGFR) levels were lower than those in the non-MetS group (all P<0.05). The proportion of male, and the positive rates of SCL-90, somatization, interpersonal sensitivity, hostility, paranoia and other factor in the MetS group were higher than those in the non-MetS group (all P<0.05). Multifactorial analysis showed that individuals with a positive SCL-90 assessment had a 1.34 times higher risk of MetS than those with a negative assessment ( OR=1.34, 95% CI: 1.06-1.68; P=0.014). Among them, individuals with positive somatization ( OR=2.02, 95% CI: 1.25-3.28; P=0.004) and hostility ( OR=1.61, 95% CI: 1.02-2.56; P=0.042) had increased risk of MetS. Conclusion:Poor mental health status increases the risk of MetS.

Objective:To explore the correlation between normalized grip strength (NGS) and normal weight obesity (NWO) in the population undergoing health check-ups.Methods:It was a cross-sectional study. A cluster sampling method was adopted to consecutively select 4 104 subjects who completed general health check-ups, body composition tests, and grip strength tests at the Medical Examination Center of Peking University Third Hospital from January 2019 to December 2023. The general information, physical examination results, biochemical indicators, body composition, and grip strength test results were collected. The subjects were grouped by gender and whether they had NWO (male: NWO group 314 cases, normal control group 690 cases; female: NWO group 834 cases, normal control group 2 266 cases). The differences in various indicators between the NWO group and the normal control group were compared by using t-tests, χ 2 tests, or Mann-Whitney U tests. The subjects were divided into four groups with the quartiles of NGS (Q 1-Q 4 groups), and binary logistic regression analysis was used to explore the correlation between the NGS and NWO. The receiver operating characteristic (ROC) curve was used to evaluate the optimal cut-off point of the NGS for diagnosing NWO. Results:Among the 4 104 subjects included in the analysis, 1 148 (28.0%) had NWO. The risk of NWO in both males and females increased with the decrease of NGS. Compared with the Q 4 group, the risk of NWO in the Q 2 and Q 1 groups of males increased by 2.600 times ( OR=2.600, 95% CI:1.556-4.343) and 4.350 times ( OR=4.350, 95% CI: 2.618-7.229), respectively; the risk of NWO in the Q 3, Q 2, and Q 1 groups of females increased by 2.024 times ( OR=2.024, 95% CI: 1.322-3.099), 4.265 times ( OR=4.265, 95% CI: 2.856-6.371), and 7.395 times ( OR=7.395, 95% CI: 4.991-10.956), respectively (all P<0.05). The optimal cut-off point of the NGS for diagnosing NWO in males and females was 0.636 2 and 0.472 2, respectively. Conclusions:The NGS is negatively correlated with the risk of NWO. Evaluation of the NGS can provide a reference for the early diagnosis and prevention of NWO.

Objective:To construct a health management mode for functional community groups and evaluate its health management effect.Methods:This study was a non-randomized controlled trial. A cluster sampling method was adopted to select 3 352 subjects who completed three health examinations at the Physical Examination Center of Peking University Third Hospital from January 2022 to October 2024 and received health management for two consecutive years from a certain functional community (an enterprise) in Beijing as the research subjects. A health management mode for functional community groups was constructed, and a cohort of the population was established. A health management platform was built, and the research subjects were included in the health management system. Comprehensive interventions were carried out using multiple methods, including disease risk assessment, daily monitoring and reminders, exercise and nutrition assessment and intervention, personal health consultation, and health science popularization knowledge push. The subjects were classified and analyzed based on general information such as age and gender. The changes in systolic blood pressure, diastolic blood pressure, fasting blood glucose, total cholesterol, low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were assessed using One-way Repeated Measures Analysis of Variance before the intervention and at 1 and 2 years after the intervention. The changes in triglycerides were assessed using Generalized Estimating Equations before the intervention and at 1 and 2 years after the intervention.Results:The systolic blood pressure, total cholesterol, and LDL-C levels of the total population showed a linear decreasing trend after the intervention (all P0.001). The HDL-C level showed an overall upward trend after the intervention [(1.45±0.32) vs (1.39±0.30) vs (1.47±0.33) mmol/L, F=12.746, P0.001]. However, there was no linear change trend in diastolic blood pressure, fasting blood glucose, and triglycerides after the intervention (all P0.05). The systolic blood pressure, total cholesterol and LDL-C levels of both men and women showed a linear decreasing trend after the intervention. For men, systolic blood pressure [(128.6±16.1) vs (127.6±16.3) vs (126.5±15.5) mmHg (1 mmHg=0.133 kPa); F=33.488, P0.001], total cholesterol [(5.29±1.02) vs (5.07±1.00) vs (4.94±1.03) mmol/L; F=286.525, P0.001], and LDL-C [(3.45±0.86) vs (3.43±0.84) vs (3.33±0.83) mmol/L; F=55.419, P0.001] all decreased. For women, systolic blood pressure [(118.9±15.6) vs (117.5±15.6) vs (117.2±15.8) mmHg; F=34.188, P0.001], total cholesterol [(5.13±0.94) vs (4.96±0.90) vs (4.85±0.90) mmol/L; F=274.080, P0.001], and LDL-C [(3.13±0.79) vs (3.10±0.76) vs (3.10±0.75) mmol/L; F=6.861, P=0.009] also decreased. The HDL-C level of men showed an overall upward trend after the intervention [(1.30±0.26) vs (1.25±0.25) vs (1.32±0.28) mmol/L; F=6.866, P0.05]. For men and women, diastolic blood pressure, fasting blood glucose and triglyceride levels showed no linear change trend after the intervention (all P0.05). The systolic blood pressure and total cholesterol levels of all age groups showed a linear decreasing trend after the intervention(all P0.001). In the 50-59 age group, diastolic blood pressure showed a linear decreasing trend after intervention [(81.6±11.6) vs (80.1±11.6) vs (79.9±11.6) mmHg; F=7.043, P0.05]. In the 40-49 age group, triglyceride showed an overall decreasing trend after intervention [1.29(0.91-2.01) vs 1.27(0.88-1.91) vs 1.27(0.92-1.89) mmol/L; Wald χ 2=10.062, P0.05]. In the 30-39 age group, LDL-C showed a linear decreasing trend after intervention [(3.23±0.80) vs (3.20±0.79) vs (3.19±0.77) mmol/L; F=7.702, P0.05]. In the 40-49 age group, LDL-C also showed a linear decreasing trend after intervention [(3.39±0.84) vs (3.36±0.82) vs (3.30±0.80) mmol/L; F=22.801, P0.001]. In the 50-59 age group, LDL-C showed a linear decreasing trend after intervention [(3.38±0.92) vs (3.32±0.91) vs (3.15±0.88) mmol/L; F=27.920, P0.001]. In the 30-39 age group, HDL-C showed an overall increasing trend after intervention [(1.46±0.33) vs (1.39±0.31) vs (1.48±0.34) mmol/L; F=10.047, P0.05]. In the 40-49 age group, HDL-C also showed an overall increasing trend after intervention [(1.45±0.30) vs (1.40±0.30) vs (1.47±0.32) mmol/L; F=10.118, P0.05]. However, there was no linear change trend in fasting blood glucose and triglyceride levels in all age groups after intervention ( F=1.169, 2.643, 0.663, 0.001, all P0.05). Conclusion:The functional community group health management mode constructed in this study has a good effect.

Objective:To investigate the correlation between blood uric acid level and body composition, exercise capacity, and cardiopulmonary function in medical examination population.Methods:In this cross-sectional study, 83 individuals who underwent physical examinations at Peking University Third Hospital from June 1, 2023, to October 1, 2023, and met the inclusion criteria were included. According to whether they had hyperuricemia (HUA), the participants were divided into HUA group (53 cases) and non-HUA group (30 cases). Body composition parameters, such as body mass index and visceral fat area, were measured with a body composition analyzer. Exercise capacity indicators, including grip strength, vertical jump, back strength, and sit-and-reach test, were measured using specific monitoring devices. Cardiopulmonary function was assessed using the stair index test. The clinical characteristics of the two groups were compared with t-tests or chi-square tests, and the correlation between uric acid levels and body composition, exercise capacity, and cardiopulmonary function was analyzed. Results:The HUA group had significantly higher skeletal muscle mass, body fat mass, body mass index, and visceral fat area when compared with the non-HUA group [(31.92±5.60) vs (26.11±6.19) kg, (23.66±9.33) vs (17.19±5.00) kg, (26.53±3.68) vs (23.27±3.59) kg/m2, 91.20 (74.25, 123.90) vs 68.25 (56.25, 90.48) cm 2, respectively] (all P<0.05). The grip strength, vertical jump, and back pull strength were all lower in the HUA group [32.70 (25.25, 40.30) vs 42.35 (35.95, 48.10) kg, 30.30 (24.10, 36.48) vs 40.55 (33.06, 45.10) kg, 24.20(20.60, 32.23) vs 29.90 (25.20, 35.50) cm, 65.60 (51.75, 78.00) vs 91.00 (67.25, 111.50) kg, respectivley] (all P<0.05). The increased step index was positively correlated with reduced risk of hyperuricemia ( OR=0.875, 95% CI: 0.793-0.966) ( P<0.05). Conclusions:Blood uric acid level is correlated with cardiopulmonary function in medical examination population. Individuals with better cardiopulmonary function have a lower risk of developing HUA. However, the relationship between blood uric acid level and body composition and exercise capacity is not clear.

Objective:To evaluate the value of CEA, CYFRA21-1 and CA125 tests in opportunistic screening of non-small cell lung cancer (NSCLC) based on meta-analysis.Methods:The original research literatures on the diagnostic value of CEA, CYFRA21-1 and CA125 in Chinese NSCLC patients were searched from databases of PubMed, Embase, The Cochrane Library, CNKI, VIP, Database and Wanfang database from establishment to June 2023. The literature screening, data extraction and quality evaluation were carried out independently by two researchers. The quality evaluation tool of diagnostic accuracy studies was used to evaluate the quality of the literature. A summary receiver operating characteristic (SROC) curve was used to assess the overall effectiveness of the tests. The outcome stability and publication bias were detected by using sensitivity analysis and Deeks′ test.Results:A total of 23 studies met the inclusion and exclusion criteria were included. The results of meta-analysis showed that the overall sensitivity of CEA, CYFRA21-1 and CA125 alone in the diagnosis of NSCLC was relatively low, it was 0.49(95% CI: 0.43-0.55), 0.56(95% CI: 0.49-0.63) and 0.41(95% CI: 0.33-0.49), respectively. The overall sensitivity of the combined detection of the three markers for the diagnosis of NSCLC increased to 0.83(95% CI: 0.69-0.91), but the overall specificity decreased to 0.76(95% CI: 0.69-0.83). Conclusions:The single detection of CEA, CYFRA21-1 and CA125 is not recommended for screening NSCLC in population receiving physical examination. Although the sensitivity of the combined detection of CEA, CYFRA21-1 and CA125 for screening NSCLC is improved, but the specificity is decreased, the misdiagnosis rate is increased, so the screening effect is limited.

Objective:To investigate the influence of different injection time of carbon nanoparticle tracer on the acquisition of lymph nodes in adenocarcinoma of esophagogastric junc-tion (AEG) treated by neoadjuvant chemoradiotherapy (nCRT) combined with surgical resection.Methods:The prospective randomized controlled study was conducted. The clinicopathological data of 120 AEG patients who were treated by nCRT combined with surgical resection in the Fourth Hospital of Hebei Medical University from March 2020 to March 2021 were selected. Based on random number table, patients were allocated into two groups. Patients undergoing endoscopic injection of carbon nanoparticle tracer 24 hours before nCRT were allocated into the experiment group, and patients undergoing endoscopic injection of carbon nanoparticle tracer 24 hours before surgical resection were allocated into the control group. All patients received the same plan of nCRT combined with D 2 radical gastrectomy. Observation indicators: (1) grouping situations of the enrolled patients; (2) surgical and postoperative pathological situations; (3) postoperative complications and treatment. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was analyzed using the independent sample t test. Measurement date with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers, and comparison between groups was analyzed using the chi-square test. Comparison of ordinal data was analyzed using the non-parameter rank sum test. Results:(1) Grouping situations of the enrolled patients. A total of 120 patients were selected for eligibility. There were 85 males and 35 females, aged (60±9)years. There were 60 patients in the experiment group and 60 patients in the control group, respectively. (2) Surgical and postoperative pathological situations. Patients in the two groups underwent D 2 radical gastrectomy successfully, with R 0 resection. The number of lymph nodes harvest, the number of lymph nodes stained, the number of metastatic lymph nodes stained, the number of micro lymph nodes, the number of inferior mediastinal lymph nodes, the number of inferior mediastinal lymph nodes stained, cases in postoperative pathological stage N0, stage N1, stage N2, stage N3a were 40.6±13.9,20.1±7.7, 1.0(0,3.0), 8.1±2.8, 3.7±1.3, 2.0(1.0,2.0), 18, 13, 23, 6 in patients of the experiment group, respectively. The above indicators were 30.4±8.3, 12.7±3.5, 0(0,1.0), 6.2±2.0, 2.4±1.2, 1.0(0,1.0), 23, 21, 15, 1 in patients of the control group, respectively. There were significant differences in the above indicators between the two groups ( t=-5.01, 6.85, Z=-3.78, t=-4.04, -5.57, Z=-5.48, -2.12, P<0.05). (3) Postoperative complications and treatment. There were 5 cases of the experiment group and 7 cases of the control group with postoperative complications, showing no significant difference between the two groups ( χ2=0.37, P>0.05). The patients with postoperative complications were improved after symptomatic treatment. Conclusion:Compared with injection of carbon nanoparticle tracer 24 hours before surgical resection, injection of carbon nanoparticle tracer 24 hours before nCRT can improve the acquisition of lymph nodes in AEG treated by nCRT combined with surgical resection.