Objective To investigate the effects and underlying mechanisms of a spray prepared from exosomes derived from M2 macrophages induced by interleukin-4 （IL-4） and tantalum particles （Ta） on the healing of pressure ulcers. Methods Bone marrow-derived macrophages were polarized into M2 macrophages using IL-4 or Ta, and exosomes （Exo-IL-4/Exo-Ta） were extracted. The regulatory effects of Exo-IL-4/Exo-Ta on M1 macrophage phenotypes and fibroblast matrix secretion were evaluated in vitro. Proteomic analysis was conducted to explore the biological processes and regulatory networks associated with Exo-Ta. A rat pressure ulcer model was used to assess the effects of Exo-IL-4/Exo-Ta spray on wound healing rate, inflammatory cell infiltration, and collagen deposition. Results In vitro, Exo-IL-4/Exo-Ta induced the polarization of M1 macrophages to M2 macrophages, reduced the secretion of pro-inflammatory factors, and promoted the expression of anti-inflammatory substances. Additionally, Exo-IL-4/Exo-Ta enhanced the production of collagen and fibronectin in fibroblasts. Proteomic analysis revealed that Exo-Ta primarily participated in biological processes such as energy metabolism and macromolecule biosynthesis. In vivo, Exo-IL-4/Exo-Ta spray accelerated wound healing, reduced inflammatory infiltration, and improved tissue remodeling in the rat pressure ulcer model. Conclusion Exosome sprays derived from M2 macrophages could accelerate pressure ulcer healing by modulating inflammation and promoting tissue regeneration, which demonstrated excellent clinical application potential.

[This corrects the article DOI: 10.1016/j.apsb.2019.01.013.].

Objective : To investigate the diagnostic value of linear array endoscopic ultrasonography ( EUS) for common bile duct microlithiasis． Methods : Data of patients who attended in the hospital and diagnosed as common bile duct microlithiasis and biliary sludge by EUS were selected．A total of 85 patients with magnetic resonance cholangiopancreatography ( MRCP) examination and ERCP treatment during hospitalization were enrolled．The results of endoscopic retrograde cholangiopancreatography / endoscopic sphincterotomy ( ERCP / EST) were the gold standard for diagnosis．The results of EUS，MRCP，and diagnostic ERCP were compared with the gold standard， and the sensitivity，specificity，positive predictive value，negative predictive value，and diagnostic accuracy of the three methods were calculated，respectively．The chi-square test was used for comparison of the above indices． Results : Of all 85 patients，63 had positive EUS results，among whom 5 had false positive results; 22 had negative EUS results，among whom 1 had false negative results．Of all 85 patients，49 had positive MRCP results，among whom 4 had false positive results; 36 had negative MRCP results，among whom 14 had false negative results．Of all 85 patients，59 had positive diagnostic ERCP results，among whom 10 had false positive results; 26 had negative diagnostic ERCP results，among whom 10 had false negative results．The sensitivity，specificity，positive predictive value( PPV) ，negative predictive value ( NPV) ，and accuracy of EUS in diagnosing common bile duct microlithia- sis were 98. 3% ，80. 8% ，92. 1% ，95. 4% and 92. 9% ，respectively． For MRCP，these values were 76. 3% ， 84. 6% ，91. 8% ，61. 1% and 78. 8% ，respectively．For diagnostic ERCP，these values were 83. 1% ，61. 5% ， 83. 1% ，61. 5% and 76. 5% ，respectively．The EUS group had a significantly higher accuracy than the MRCP group ( χ2 = 6. 986，P ＜0. 05) and diagnostic ERCP group ( χ2 = 8. 900，P ＜0. 05) ．The areas under the ROC curves ( AUC) and 95% CI of EUS group，MRCP group and diagnostic ERCP were 0. 895 ( 95% CI: 0. 802 - 0. 988，P＜0. 001) ，0. 804 ( 95% CI: 0. 702 －0. 907，P ＜0. 001) and 0. 723 ( 95% CI: 0. 598 －0. 848，P = 0. 001) ，respectively． Conclusion EUS has a high diagnostic value in the diagnosis of common bile duct microli- thiasis and thus can be used as the preferred examination before therapeutic ERCP．

Robotic surgical systems, with advantages such as 3D visualization, rotating instruments, and stable imaging, are increasingly utilized in transabdominal and transanal approaches for rectal cancer surgery. Compared to traditional laparoscopy, robotic systems could educe the technical difficulty of total mesorectal excision (TME) and enhance pelvic autonomic nerve preservation, while demonstrating comparable long-term outcomes. However, the high cost and limited clinical benefits have led to reflection. Controversies persist regarding prolonged operative time, lack of haptic feedback and limited cost-effectiveness. Studies suggest robotic surgery may benefit patients with complex conditions such as obesity, narrow pelvis or low rectal tumors. The rapid development of domestic surgical robots is expected to break market monopolies, reduce costs and expand applications through telemedicine. Future efforts should focus on identifying optimal patient cohorts and generating high-quality evidence to refine the clinical utility of robotic surgery.

Robotic surgical systems, with advantages such as 3D visualization, rotating instruments, and stable imaging, are increasingly utilized in transabdominal and transanal approaches for rectal cancer surgery. Compared to traditional laparoscopy, robotic systems could educe the technical difficulty of total mesorectal excision (TME) and enhance pelvic autonomic nerve preservation, while demonstrating comparable long-term outcomes. However, the high cost and limited clinical benefits have led to reflection. Controversies persist regarding prolonged operative time, lack of haptic feedback and limited cost-effectiveness. Studies suggest robotic surgery may benefit patients with complex conditions such as obesity, narrow pelvis or low rectal tumors. The rapid development of domestic surgical robots is expected to break market monopolies, reduce costs and expand applications through telemedicine. Future efforts should focus on identifying optimal patient cohorts and generating high-quality evidence to refine the clinical utility of robotic surgery.

Objective To investigate the clinical value of uric acid(UA)to albumin(Alb)ratio(UAR)in predicting the prognosis of the patients with heart failure.Methods A total of 1 893 patients with heart failure and complete clinical data in the Chinese Heart Failure Database were selected as the clinical research subjects for conducting the retrospective cohort analysis.The general clinical data,coagulation routine,tropo-nin Ⅰ(cTnⅠ),cardiac enzyme profile,liver function,B-type brain natriuretic peptide(BNP),uric acid(UA)and left ventricular ejection fraction in echocardiography in the study subjects were collected to calculate UAR.Ac-cording to the receiver operating characteristic(ROC)curve,the optimal cut-off value of UAR was selected as 17.48.Then the subjects were divided into the low UAR group(UAR＜17.48,n=1 525)and high UAR group(UAR≥17.48,n=368).The clinical data were compared between the two groups,and the effect of UAR on the all-cause mortality in the patients with heart failure was evaluated by the binary logistic regres-sion analysis.Results The follow up time in the patients was 90 d,and 37 cases(2.0％)of all-cause death oc-curred during the follow up period.The proportion of males,proportion of cardiac function grade Ⅳ,propor-tion of myocardial infarction,levels of uric acid,D-dimer,creatine kinase(CK),creatine kinase isoenzyme(CK-MB),lactate dehydrogenase(LDH),alanine aminotransferase(ALT),glutamyl transpeptidase(GGT),alkaline phosphatase(AKP)and BNP in the high UAR group were higher than those in the low UAR group,while the pulse,systolic pressure,diastolic pressure,proportions of heart function grade Ⅱ and grade Ⅲ and ALB level were lower than those in the UAR group,and the differences were statistically significant(P＜0.05).The ROC curve analysis results showed that the area under the curve of UAR for assessing the all-cause death occurrence in heart failure was 0.715(95％CI:0.626-0.804,P＜0.001),the sensitivity was 56.8％and the specificity was 81.4％;the binary logistic regression analysis results showed that the incidence rate of all-cause mortality in the high UAR group was 1.09 times higher than that in the low UAR group(OR=1.09,95％CI:1.02-1.20,P=0.017).Conclusion UAR could serve as an independent predictive fac-tor of all-cause death occurrence in heart failure,which needs clinic to pay attention.

Objective To investigate the clinical value of C reactive protein(CRP)to high-density lipo-protein-cholesterol(HDL-C)ratio(CHR)in predicting the all-cause mortality after percutaneous coronary in-tervention(PCI)in the patients with stable coronary artery disease(SCAD).Methods A total of 189 patients with SCAD undergoing PCI admitted and treated in this hospital were selected as the study subjects.The pa-tients'data were collected,including the history of hypertension,diabetes,hyperlipidemia,smoking,drug use,etc.,and the relevant indicators such as electrocardiogram,echocardiography,liver function,renal function,blood lipids,blood glucose,Hb,CRP,post-discharge drug treatment regimen and out-of-hospital follow-up re-sults were recorded.The CHR level of the patients was calculated,and the receiver operating characteristic(ROC)curve of CHR was plotted,the grouping was performed according to the cutoff value and the clinical data were compared between the two groups.The Kaplan-Meier survival curve and multivariate Cox risk mod-el were used to analyze the relationship between CHR and all-cause mortality events.Results The follow-up time was 730 d,and 16 cases of all-cause death occurred during the follow-up period.The area under the curve(AUC)of CHR for predicting the all-cause mortality was 0.833(95％CI:0.735-0.930,P＜0.001),and the cut-off value was 2.446.The grouping was performed according to CHR=2.446,there were 52 cases in the high CHR group(CHR≥2.446)and 137 cases in the low CHR group(CHR＜2.446).The diastolic blood pressure level,CRP level and proportion of all-cause mortality in the high CHR group were higher than those in the low CHR group,and the proportion of diabetes mellitus,Hb level,TC level and HDL-C level were lower than those in the low CHR group,and the differences were statistically significant(P＜0.05).The results of Kaplan-Meier survival analysis showed that the incidence rate of all-cause mortality in the high CHR group was higher than that in the low CHR group(Log-Rank x2=26.127,P＜0.001).The multivariate Cox regres-sion analysis results showed that CHR was the independent influencing factor of the occurrence of all-cause mortality after adjusting age,gender,diastolic blood pressure,diabetes mellitus,left ventricular ejection frac-tion,Hb and TC(P＜0.05).Conclusion CHR is an independent predictive factor of all-cause mortality after PCI in the patients with SCAD,and clinic needs to pay attention to.

Objective:To investigate the prognosis and the factors that influence it in patients with non-gastric gastrointestinal stromal tumors (GISTs) who are at low risk of recurrence.Methods:This was a retrospective cohort study. Clinicopathologic and prognostic data from patients with non-gastric GISTs and at low risk of recurrence (i.e., very low-risk or low-risk according to the 2008 version of the Modified NIH Risk Classification), who attended 18 medical centers in China between January 2000 and June 2023, were collected. We excluded patients with a history of prior malignancy, concurrent primary malignancy, multiple GISTs, and those who had received preoperative imatinib. The study cohort comprised 1,571 patients with GISTs, 370 (23.6%) of whom were at very low-risk and 1,201 (76.4%) at low-risk of recurrence. The cohort included 799 (50.9%) men and 772 (49.1%) women of median age 57 (16–93) years. Patients were followed up to July 2024. The prognosis and its influencing factors were analyzed. Receiver operating characteristic curves for tumor diameter and Ki67 were established, and the sensitivity, specificity, area under the curve (AUC) and optimal cut-off value with 95% confidence intervals were calculated. Propensity score matching was implemented using the 1:1 nearest neighbor matching method with a matching tolerance of 0.02.Results:With a median follow-up of 63 (12–267) months, the 5- and 10-year overall survival (OS) rates of the 1,571 patients were 99.5% and 98.0%, respectively, and the 5- and 10-year disease-free survival (DFS) rates were 96.3% and 94.4%, respectively. During postoperative follow-up, 3.8% (60/1,571) patients had disease recurrence or metastasis, comprising 0.8% (3/370) in the very low-risk group and 4.7% (57/1,201) in the low-risk group. In the low-risk group, recurrence or metastasis occurred in 5.5% (25/457) of patients with duodenal GISTs, 3.9% (25/645) of those with small intestinal GISTs, 9.2% (6/65) of those with rectal GISTs, and 10.0% (1/10) of those with colonic GISTs. Among the 60 patients with metastases, 56.7% (34/60) of the metastases were located in the abdominal cavity, 53.3% (32/60) in the liver, and 3.3% (2/60) in bone. During the follow-up period, 13 patients (0.8%) died of disease. Receiver operating characteristic curves were plotted for tumor diameter and Ki67 and assessed using the Jordon index. This showed that the difference in DFS between the two groups was statistically significant when the cutoff value for tumor diameter was 3.5 cm (AUC 0.731, 95% CI: 0.670–0.793, sensitivity 77.7%, specificity 64.1%). Furthermore, the difference in DFS between the two groups was statistically significant when the cutoff value for Ki67 was 5% (AUC 0.693, 95% CI: 0.624–0.762, sensitivity 60.7%, specificity 65.3%). Multifactorial analysis revealed that tumor diameter ≥3.5 cm, Ki67 ≥5%, and R1 resection were independent risk factors for DFS in patients with non-gastric GISTs at low risk of recurrence (all P<0.05). Furthermore, age >57 years, Ki67 ≥5%, and R1 resection were also independent risk factors for OS in patients with non-gastric GISTs at low risk of recurrence (all P<0.05). We also grouped the patients according to whether they had received postoperative adjuvant treatment with imatinib for 1 or 3 years. This yielded 137 patients in the less than 1-year group, 139 in the 1-year plus group; and 44 in both the less than 3 years and 3-years plus group. After propensity score matching for age, tumor diameter, Ki67, and resection status, the differences in survival between the two groups were not statistically significant (all P>0.05). The 10-year DFS and OS were 87.5% and 95.5%, respectively, in the group treated with imatinib for less than 1 year and 88.5% and 97.8%, respectively, in the group treated for more than 1 year. The 10-year DFS and OS were 89.6% and 92.6%, respectively, in the group treated with imatinib for less than 3 years and 88.0% and 100.0%, respectively, in the group treated with imatinib for more than 3 years. Conclusion:The overall prognosis of primary, non-gastric, low recurrence risk GISTs is relatively favorable; however, recurrences and metastases do occur. Age, tumor diameter, Ki67, and R1 resection may affect the prognosis. For some patients with low risk GISTs, administration of adjuvant therapy with imatinib for an appropriate duration may help prevent recurrence and improve survival.

Objective:To analyze the clinical characteristics of patients undergoing extracorporeal cardiopulmonary resuscitation (ECPR), and to explore the risk factors leading to poor prognosis.Methods:The clinical data of 95 patients with ECPR admitted to the First Affiliated Hospital of Zhengzhou University from January 2020 to May 2023 were retrospectively analyzed. According to the survival status at the time of discharge, the patients were divided into the survival group and death group. The difference of clinical data between the two groups was compared to explore the risk factors related to death and poor prognosis. Risk factors associated with death were identified by Binary Logistic regression analysis. Results:A total of 95 patients with ECPR were included in this study, 62 (65.3%) died and 33 (34.7%) survived at discharge. Patients in the death group had longer low blood flow time [40 (30, 52.5) min vs. 30 (24.5, 40) min ] and total cardiac arrest time[40 (30, 52.5) min vs. 30(24.5, 40) min], shorter total hospital stay [3 (2, 7.25) d vs. 19 (13.5, 31) d] and extracorporeal membrane oxygenation (ECMO) assisted time [26.5 (17, 50) h vs. 62 (44, 80.5) h], and more IHCA patients (56.5% vs. 33.3%) and less had spontaneous rhythm recovery before ECMO (37.1% vs. 84.8%). Initial lactate value [(14.008 ± 5.188) mmol/L vs.(11.23 ± 4.718) mmol/L], APACHEⅡ score [(30.10 ± 7.45) vs. (25.88 ± 7.68)] and SOFA score [12 (10.75, 16) vs. 10 (9.5, 13)] were higher ( P< 0.05). Conclusions:No spontaneous rhythm recovery before ECMO, high initial lactic acid and high SOFA score are independent risk factors for poor prognosis in ECPR patients.

Objective To explore the correlation between hyponatremia at admission and all-cause mortality within one year after discharge in elderly patients with intestinal obstruction.Methods The 331 cases of elderly patients with intestinal obstruction(aged ≥ 60 years)who visited the General Surgery Department of Nanjing Meishan Hospital from January 2017 to December 2020 were selected as the research objects for retrospective cohort study analysis.According to the patient's blood sodium level at admission,they are divided into two groups:the hyponatremia group(Na＜135 mmol/L)and the non hyponatremia group(Na≥135 mmol/L).Divided into death group and survival group based on whether death occurred within one year after discharge.SPSS 25.0 software was used for statistical analysis.Independent sample t test,x2 test,Kaplan Meier method,and multivariate Cox regression analysis were used to observe the correlation between admission hyponatremia and all-cause mortality within one year after discharge in elderly patients with intestinal obstruction.Results A total of 331 patients were enrolled.The incidence of hyponatremia was 32.3％,and 56 deaths occurred within one year,accounting for 16.92％.The one-year mortality rate in the hyponatremia group was 23.4％(25/107),which was higher than 13.8％(31/224)in the non hyponatremia group.The difference was statistically significant(P＜0.05).The survival analysis(Kaplan Meier)results showed that the survival rate of the hyponatremia group was lower than that of the non hyponatremia group(Log Rank P＜0.05).After adjusting for other confounding factors in multivariate Cox regression analysis,hyponatremia(HR=1.88,95％CI:1.07-3.29)was an independent risk factor for one-year all-cause mortality in elderly patients with intestinal obstruction(P＜0.05).Conclusion Hyponatremia at admission is an independent risk factor for all cause mortality in elderly patients with intestinal obstruction within one year after discharge.