Objective:To investigate the survival outcomes and prognostic factors in patients undergoing radical resection for pancreatic body and tail cancer.Methods:A retrospective case series study was conducted on 992 patients who underwent radical resection for pancreatic body and tail cancer at the Pancreatic Center of the First Affiliated Hospital of Nanjing Medical University from January 2016 to June 2024. In this study, 577 (58.2%) were male and 415 (41.8%) were female,with an age of (65±9) years (range: 26 to 86 years). Follow-up continued until June 2024. Survival rates were estimated using the Kaplan-Meier method,and prognostic factors were identified using univariate and multivariate Cox proportional hazards models.Results:Among 992 patients,open surgery was the predominant approach (89.1%, 884/992), and radical antegrade modular pancreatosplenectomy (RAMPS) was performed in 317 patients (32.0%). Combined organ resection,venous resection,and arterial resection were performed in 23.5%, 9.3%,and 11.2% of patients,respectively. The rates of R0, R1-1 mm, and R1-direct resections were 49.8% (494/992),41.5% (412/992), and 8.7% (86/992),respectively. Stage ⅡB was the most common TNM stage (32.2%,319/992). A total of 801 patients (80.8%) received adjuvant chemotherapy. The median follow-up period was 32.0(8.8) months(range:3.2 to 105.3 months),during which 508 patients (51.2%) died. The overall median survival (OS) was 26.4 months,with 1-,3-, and 5-year survival rates of 79.0%,40.0%, and 29.0%, respectively. In the recent five years (from 2020 to 2024), the median OS improved significantly to 34.1 months compared to 20.0 months from 2016 to 2019 ( P<0.01). Histological subtype analysis showed that the median OS time was 26.7 months for pancreatic ductal adenocarcinoma (PDAC, n=855),58.9 months for invasive intraductal papillary mucinous carcinoma (IPMC, n=32),and 15.7 months for adenosquamous carcinoma of pancreas (ASCP, n=73) ( P=0.001). Among PDAC patients, adjuvant chemotherapy significantly improved survival (29.1 months vs. 14.4 months, P<0.01);in IPMC patients, adjuvant chemotherapy also extended survival (65.7 months vs. 58.9 months, P=0.047). Although ASCP patients receiving chemotherapy had a longer median OS time than those without (18.8 months vs. 8.9 months),the difference was not statistically significant ( P=0.151). Multivariate Cox regression analysis in PDAC patients indicated that adjuvant chemotherapy, R0 resection, T stage,N stage,and tumor differentiation were independent prognostic factors ( P<0.01). The median OS time by TNM stage was:not reached for stage ⅠA, 51.6 months for ⅠB, 25.5 months for ⅡA, 23.7 months for ⅡB, 23.0 months for Ⅲ, and 14.4 months for Ⅳ. The median OS time for R0,R1-1 mm,and R1-direct resections was 34.1,24.7,and 15.7 months,respectively ( P<0.01). Conclusion:Adjuvant chemotherapy,R0 resection,tumor stage,and differentiation are independent prognostic factors for pancreatic body and tail cancer.

ObjectiveTo investigate the therapeutic effect of sitravatinib on carbon tetrachloride （CCl₄）-induced liver fibrosis in mice. MethodsA total of 30 male C57BL/6J mice， aged 8 weeks， were randomly divided into control group， CCl₄ model group， and low- （5 mg/kg）， middle- （10 mg/kg）， and high-dose （20 mg/kg） sitravatinib groups. All mice except those in the control group were given intraperitoneal injection of CCl₄ for 4 consecutive weeks to induce liver fibrosis， and since the first day of modeling， the mice in the low-， middle-， and high-dose sitravatinib groups were given sitravatinib at the corresponding dose by gavage every day. The serum levels of total cholesterol （TC）， triglyceride （TG）， and alanine aminotransferase （ALT） were measured for the mice in each group； hepatic hydroxyproline content was measured； HE staining， Masson staining， and Sirius Red staining were used to observe liver histopathological changes； quantitative real-time PCR and Western blot were used to measure the mRNA and protein expression levels of α-smooth muscle actin （α-SMA） and collagen type I alpha 1 （Col1a1） in liver tissue. The therapeutic effect of sitravatinib was assessed based on the above results. A one-way analysis of variance was used for comparison of continuous data between multiple groups， and the least significant difference t-test was used for further comparison between two groups. ResultsCompared with the control group， the model group had significant increases in the levels of TC， TG， and ALT （all P<0.05）， and there were no significant differences in the levels of TC， TG， and ALT between the model group and the low-， middle-， and high-dose sitravatinib groups （all P>0.05）. Hepatic hydroxyproline content decreased after sitravatinib intervention， with a significant difference between the middle-/high-dose sitravatinib groups and the CCl₄ model group （both P<0.05）. Histopathological staining showed that the sitravatinib treatment groups had a reduction in collagen deposition， along with thinning and fragmentation of fibrous septa， and in the high-dose sitravatinib group， 4 mice had a fibrosis stage of S0—S1 and 2 mice had a fibrosis stage of S2—S3， suggesting a certain degree of alleviation of liver fibrosis degree compared with the CCl₄ model group （mainly S3—S4）. The measurement of related molecules showed that sitravatinib downregulated the mRNA and protein expression levels of α-SMA and Col1a1 （all P<0.05）. ConclusionSitravatinib can effectively alleviate CCl₄-induced liver fibrosis in mice， possibly by inhibiting hepatic stellate cell activation and collagen synthesis.

Objective:To investigate the survival outcomes and prognostic factors in patients undergoing radical resection for pancreatic body and tail cancer.Methods:A retrospective case series study was conducted on 992 patients who underwent radical resection for pancreatic body and tail cancer at the Pancreatic Center of the First Affiliated Hospital of Nanjing Medical University from January 2016 to June 2024. In this study, 577 (58.2%) were male and 415 (41.8%) were female,with an age of (65±9) years (range: 26 to 86 years). Follow-up continued until June 2024. Survival rates were estimated using the Kaplan-Meier method,and prognostic factors were identified using univariate and multivariate Cox proportional hazards models.Results:Among 992 patients,open surgery was the predominant approach (89.1%, 884/992), and radical antegrade modular pancreatosplenectomy (RAMPS) was performed in 317 patients (32.0%). Combined organ resection,venous resection,and arterial resection were performed in 23.5%, 9.3%,and 11.2% of patients,respectively. The rates of R0, R1-1 mm, and R1-direct resections were 49.8% (494/992),41.5% (412/992), and 8.7% (86/992),respectively. Stage ⅡB was the most common TNM stage (32.2%,319/992). A total of 801 patients (80.8%) received adjuvant chemotherapy. The median follow-up period was 32.0(8.8) months(range:3.2 to 105.3 months),during which 508 patients (51.2%) died. The overall median survival (OS) was 26.4 months,with 1-,3-, and 5-year survival rates of 79.0%,40.0%, and 29.0%, respectively. In the recent five years (from 2020 to 2024), the median OS improved significantly to 34.1 months compared to 20.0 months from 2016 to 2019 ( P<0.01). Histological subtype analysis showed that the median OS time was 26.7 months for pancreatic ductal adenocarcinoma (PDAC, n=855),58.9 months for invasive intraductal papillary mucinous carcinoma (IPMC, n=32),and 15.7 months for adenosquamous carcinoma of pancreas (ASCP, n=73) ( P=0.001). Among PDAC patients, adjuvant chemotherapy significantly improved survival (29.1 months vs. 14.4 months, P<0.01);in IPMC patients, adjuvant chemotherapy also extended survival (65.7 months vs. 58.9 months, P=0.047). Although ASCP patients receiving chemotherapy had a longer median OS time than those without (18.8 months vs. 8.9 months),the difference was not statistically significant ( P=0.151). Multivariate Cox regression analysis in PDAC patients indicated that adjuvant chemotherapy, R0 resection, T stage,N stage,and tumor differentiation were independent prognostic factors ( P<0.01). The median OS time by TNM stage was:not reached for stage ⅠA, 51.6 months for ⅠB, 25.5 months for ⅡA, 23.7 months for ⅡB, 23.0 months for Ⅲ, and 14.4 months for Ⅳ. The median OS time for R0,R1-1 mm,and R1-direct resections was 34.1,24.7,and 15.7 months,respectively ( P<0.01). Conclusion:Adjuvant chemotherapy,R0 resection,tumor stage,and differentiation are independent prognostic factors for pancreatic body and tail cancer.

Objective To design a high altitude adaptive oxygen generator for the crews to alleviate their high altitude reaction in high altitude environment and meet their requirements for oxygen supply.Methods A high altitude adaptive oxygen generator based on the mature pressure swing adsorption oxygen production method was designed with the key technologies of discharge capacity compensation of air compression pump and airway fusion of molecular sieve tower,which had the components of molecular sieve tower,air compression pump,controller,cooling fan,cooler,solenoid valve,regulator,flow meter and etc.Trials were carried out at the simulated altitude and field plateau environment so as to verify the high altitude adaptive performance of the oxygen generator developed.Results The trial results showed the oxygen generator met the desired objectives and the requirements for oxygen volume fraction in GJB 2799-1996 General specification for medical oxygen generator using molecular sieve method.Conclusion The oxygen generartor provides oxygen supply effectively for vehicle operators in plateau environments or the ones rushing into the plateau.[Chinese Medical Equipment Journal,2025,46(4):29-34]

Objective:To explore the correlation between serum creatinine/cystatin C ratio (Scr/CysC) and muscle mass and muscle strength, and evaluate the predictive value of Scr/CysC for all-cause mortality in peritoneal dialysis patients.Methods:It was a prospective cohort study. The patients who received regular peritoneal dialysis treatment for more than 3 months and had stable conditions in the Renal Division of Peking University First Hospital from April 1, 2011 to August 1, 2012 were included, and the clinical data were collected. The patients were divided into the male group and the female group, and the differences of clinical data between the two groups were compared. The lean body mass (LBM) directly measured by the dual-energy X-ray absorptiometry (LBM-DEXA) was used as the reference gold standard and compared with the LBM estimated by the creatinine method (LBM-CK) and the anthropometric method (LBM-A). Muscle strength was measured by a grip strength meter for the dominant hand grip strength. Pearson correlation and multiple linear regression analysis method were used to analyze the correlations between Scr/CysC and LBM as well as grip strength, and subgroup analyses were conducted according to gender groups. Cox regression model was used to analyze the value of Scr/CysC in predicting all-cause mortality in peritoneal dialysis patients.Results:A total of 213 peritoneal dialysis patients were included in this study, including 95 males (44.6%) and 118 females (55.4%). The age was (56.46±12.42) years old. The dialysis age was 24.0 (9.0, 52.5) months. The baseline Scr/CysC was (1.77±0.73). LBM-DEXA ( t=-17.764, P<0.001), LBM-CK ( t=-7.702, P<0.001), LBM-A ( t=-16.813, P<0.001), grip strength ( t=-11.083, P<0.001) and Scr/CysC ( t=-2.965, P=0.003) in the male group were all significantly higher than those in the female group. Pearson correlation analysis showed that Scr/CysC was positively correlated with LBM-DEXA ( r=0.204, P=0.003), LBM-CK ( r=0.279, P<0.001), LBM-A ( r=0.198, P=0.004), and grip strength ( r=0.341, P<0.001). Multiple linear regression analysis showed that Scr/CysC wasn't independently correlated with LBM-DEXA, but was independently correlated with grip strength ( β=0.134, P=0.006). Cox regression analysis showed that baseline Scr/CysC was not an independent influencing factor of all-cause mortality in peritoneal dialysis patients ( HR=1.005, 95% CI 0.751-1.346, P=0.972). Conclusion:Scr/CysC is associated with muscle mass and muscle strength in peritoneal dialysis patients, but has no value in predicting all-cause mortality in peritoneal dialysis patients.

Objective To summarise the evidence on nutritional management in adults with metabolic dysfunction-associated fatty liver disease(MAFLD),therefore to provide a guidance for clinical practice.Methods According to the"6S"model,literature on the nutritional management in adult MAFLD were retrieved from domestic and international databases and websites,including National Guide Library of the United States,National Institute for Health and Care Excellence,Guidelines International Network,the American Association for the Study of the Liver Disease,Europe Association for the Study of the Liver,Asian Pacific Association for the Study of the Liver,American Association of Clinical Endocrinologists,Italian Association for the Study of the Liver,European Society of Clinical Nutrition and Metabolism,American Society for Parenteral and Enteral Nutrition,BMJ Best Practice,UpToDate,Joanna Briggs Institute(JBI)Evidence database,PubMed,Cochrane Library,Web of Science,Embase,CINAHL,Medlive,CNKI,VIP,Wanfang,China Biology Medicine,from the inception of databases to 1st March,2024.The literature included guidelines,expert consensus,recommended practices,systematic reviews and evidence summaries.Two researchers independently evaluated the quality of literature and extracted data to summarise the best evidence.Results A total of 24 publication were finally included,with 36 pieces of best evidence summarised,covering six themes:assessment and goals,dietary patterns,diet structure,dietary supplements,exercise guidance and health education.Conclusion The best evidence on nutritional management summarised in this study provides the evidence-based support for healthcare providers with better nutritional management for adult MAFLD,it also offers a guidance in formulation of individualised nutritional management plans.

Objective:To observe the early efficacy of intense pulsed light(IPL)combined with non-ablative fractional laser(NAFL)in preventing postoperative pathological scar formation and intervention of inflammatory factors.Methods:93 patients with postoperative pathological scar formation who were admitted to our hospital from March 2022 to September 2024 were selected,they were divided into control group A(silicone gel treatment,n=31),control group B(NAFL on the basis of control group A,n=31)and study group(IPL on the basis of control group B,n=31)using the random number table method.The clinical efficacy,simple quality of life scale(SF-36),vancouver scar scale(VSS),inflammatory factors[interleukin-6(IL-6),tumor necrosis factor-α(TNF-α),C-reactive protein(CRP)],and adverse reactions among three groups were compared.Results:The clinical total effective rate in the study group were higher than those in the control group A and control group B(P＜0.05).SF-36 increased sequentially and VSS decreased sequentially in control group A,control group B,and study group after treatment(P＜0.05).CRP,IL-6,and TNF-α decreased sequentially in control group A,control group B,and study group after treatment(P＜0.05).There was no significant difference in the incidence of adverse reactions among the three groups(P＞0.05).Conclusion:IPL combined with NAFL in preventing postoperative pathological scar formation,can effectively reduce scar formation,reduce inflammatory factors levels,improve patients' quality of life,and be safe and reliable.

Objective:To explore the application effect of BOPPPS teaching model in the teaching of Food Safety Supervision and Management course.Methods:Students of two parallel classes majoring in the Food Quality and Safety of the same grade of a university in Liaoning Province were selected,and the traditional teaching model and BOPPPS teaching model were used for teaching practice respectively.The scores,teaching effect and satisfaction of two groups were compared.Results:The regular performance and total scores of the experimental group were significantly higher than those of the control group(P＜0.05).In terms of enhancing students'interest in food safety supervision,improving knowledge and skills,cultivating self-directed learning and teamwork abilities,strengthening the close connection between the course and real cases,and providing assistance for future career,the experimental group performed significantly better than the control group(P＜0.05).Moreover,the satisfaction of the experimental group was higher than that of the control group(P＜0.05).Conclusion:BOPPPS teaching model has a remarkable effect in the teaching of Food Safety Supervision and Management course,providing an effective approach for the teaching reform of this course.

Objective:To explore the correlation between serum creatinine/cystatin C ratio (Scr/CysC) and muscle mass and muscle strength, and evaluate the predictive value of Scr/CysC for all-cause mortality in peritoneal dialysis patients.Methods:It was a prospective cohort study. The patients who received regular peritoneal dialysis treatment for more than 3 months and had stable conditions in the Renal Division of Peking University First Hospital from April 1, 2011 to August 1, 2012 were included, and the clinical data were collected. The patients were divided into the male group and the female group, and the differences of clinical data between the two groups were compared. The lean body mass (LBM) directly measured by the dual-energy X-ray absorptiometry (LBM-DEXA) was used as the reference gold standard and compared with the LBM estimated by the creatinine method (LBM-CK) and the anthropometric method (LBM-A). Muscle strength was measured by a grip strength meter for the dominant hand grip strength. Pearson correlation and multiple linear regression analysis method were used to analyze the correlations between Scr/CysC and LBM as well as grip strength, and subgroup analyses were conducted according to gender groups. Cox regression model was used to analyze the value of Scr/CysC in predicting all-cause mortality in peritoneal dialysis patients.Results:A total of 213 peritoneal dialysis patients were included in this study, including 95 males (44.6%) and 118 females (55.4%). The age was (56.46±12.42) years old. The dialysis age was 24.0 (9.0, 52.5) months. The baseline Scr/CysC was (1.77±0.73). LBM-DEXA ( t=-17.764, P<0.001), LBM-CK ( t=-7.702, P<0.001), LBM-A ( t=-16.813, P<0.001), grip strength ( t=-11.083, P<0.001) and Scr/CysC ( t=-2.965, P=0.003) in the male group were all significantly higher than those in the female group. Pearson correlation analysis showed that Scr/CysC was positively correlated with LBM-DEXA ( r=0.204, P=0.003), LBM-CK ( r=0.279, P<0.001), LBM-A ( r=0.198, P=0.004), and grip strength ( r=0.341, P<0.001). Multiple linear regression analysis showed that Scr/CysC wasn't independently correlated with LBM-DEXA, but was independently correlated with grip strength ( β=0.134, P=0.006). Cox regression analysis showed that baseline Scr/CysC was not an independent influencing factor of all-cause mortality in peritoneal dialysis patients ( HR=1.005, 95% CI 0.751-1.346, P=0.972). Conclusion:Scr/CysC is associated with muscle mass and muscle strength in peritoneal dialysis patients, but has no value in predicting all-cause mortality in peritoneal dialysis patients.

Objectives:To investigate the correlation between resting heart rate(RHR)and atherosclerotic cardiovascular disease(ASCVD)and all-cause death in young and middle-aged people.Methods:A prospective cohort study was conducted enrolling 72 642 young and middle-aged participants(aged<60 years),who participated in the medical examination of the Kailuan Study from June 2006 to October 2007.According to the quartile of the RHR level,the participants were divided into Q1 group(<67 beats/min,n=14 381),Q2 group(67-70 beats/min,n=15 815),Q3 group(71-75 beats/min,n=15 876),Q4 group(76-80 beats/min,n=13 933)and Q5 group(>80 beats/min,n=12 637).Cox proportional hazard regression model was used to analyze the effect of RHR on ASCVD and all-cause death.The dose-response relationship between RHR and the risk of ASCVD and all-cause death was investigated using a restricted cubic spline regression model.Results:During a mean follow-up of(10.0±4.85)years,2 898 patients(3.99%)developed ASCVD.Multivariate Cox regression analysis showed that after adjusting for confounding factors,the risk of RHR and ASCVD in group Q5 increased by 20%compared with group Q1(HR=1.20,95%CI:1.06-1.35,P<0.05).There was no significant risk in groups Q2 to Q4 compared to Q1 group(all P>0.05).In addition,the risk of ASCVD increased by 4%for every 10 beats/min increase in RHR(HR=1.04,95%CI:1.01-1.07,P=0.009).During the follow-up period of(10.2±4.82)years,all-cause death occurred in 2 175 participants(2.99%).The results showed that compared with Q1 group,the risk of all-cause death in Q3 to Q5 groups increased by 33%(HR=1.33,95%CI:1.15-1.54,P<0.001),33%(HR=1.33,95%CI:1.14-1.54,P<0.001),and 78%(HR=1.78,95%CI:1.54-2.05,P<0.001)respectively,and there was no statistical significance between group Q2 and group Q1.The risk of all-cause death increased by 15%for every 10 beats/min increase in RHR(HR=1.15,95%CI:1.11-1.19,P<0.001).Restricted cubic spline analysis showed that RHR was linearly correlated with risk of ASCVD(Poverall=0.022,Pnon-linear=0.617),and the risk of ASCVD increased significantly with RHR>72 beats/min.RHR was linearly associated with the risk of all-cause death(Poverall<0.001,Pnon-linear=0.212),and the risk of all-cause death was significantly increased with RHR>72 betas/min.Conclusions:Higher RHR is associated with an increased risk of ASCVD and all-cause mortality in young and middle-aged individuals.