Objective To evaluate the safety and efficacy of simultaneous resection for initially resectable rectal cancer with synchronous liver metastases. Methods A retrospective analysis was conducted on 305 patients with initially resectable rectal cancer with synchronous liver metastases. These patients were diagnosed at Zhongshan Hospital, Fudan University from January 2016 to June 2020. Among them, 191 underwent simultaneous rectum and liver resection and 114 underwent staged resection. Propensity score matching (PSM) was performed at a 1∶1 ratio. Clinical data were compared and Kaplan-Meier survival curves were plotted. Results After PSM, 85 patients were included in each group. General data showed no significant differences. Except for liver metastasis resection method, no statistical differences were found in primary tumor surgery approach, intraoperative blood loss, intraoperative complications, time to first flatus and defecation, 30-day mortality, and postoperative hospital stay between the simultaneous resection group and the staged resection group. The overall complication rate was higher in the simultaneous resection group (48.2% vs 29.4%, P＝0.04). Specifically, the grade Ⅱ complications were significantly higher (29.4% vs 14.1%, P＝0.016), but there’s no differences in severe complications (grade Ⅲ-Ⅴ). No statistically differences were observed in median progression-free survival (HR＝0.70, 95%CI 0.50-0.97, P＝0.103) and 5-year overall survival (HR＝0.95, 95%CI 0.63-1.44, P＝0.259). Conclusions Simultaneous resection demonstrates comparable safety and efficacy to staged resection for initially resectable rectal cancer with synchronous liver metastases.

Acute ischemic stroke (AIS) is a cerebrovascular disease characterized by high morbidity, disability, and mortality, posing a significant threat to human health. Endovascular treatment has now been established as a key method for AIS management, in which stent retrievers that can mechanically remove blood clots play a key role in this technique. In recent years, stent retrievers have evolved in complexity and functionality to improve the ability of clot removing and surgical safety. However, the present instruments still have limitations on treatment efficiency, vascular adaptability, and operational precision, posing an urgent need for innovation in the design of stent retrievers. This paper systematically reviewed the structural features and working principles of AIS stent retrievers from the perspective of efficacy evaluation metrics, historical development, recent advancements in stent retrieval technology, and future prospects.
Humans ; Ischemic Stroke/surgery* ; Stents ; Endovascular Procedures/methods* ; Thrombectomy/methods* ; Device Removal/methods*

Objective To explore the expression level of plasma miRNA in patients with swallowing and cognitive dysfunction after ischemic stroke and its correlation with the severity of dysfunction.Methods A retrospective analysis was conducted on the clinical data of 109 patients with ischemic stroke who were hospitalized in the First Affiliated Hospital of Guangxi Medical University and the First Affiliated Hos-pital of Fujian Medical University from January 2023 to March 2024.The expression levels of plasma miR-140-5p,miR-17-5p,and miR-103a-3p were detected by RT-qPCR.The swallowing function was evaluated by the Wada Drinking Water Test and the Functional Oral Feeding Scale,and the cognitive function of stroke pa-tients was evaluated by the modified Rankin Scale(mRS)classification.According to the mRS rating criteria,the patients were divided into the good functional outcome group(grade≤2,n=50)and the poor functional outcome group(grade≥3,n=59).Analyzed the correlation between miRNA expression levels and the degree of functional impairment,compared the clinical characteristics of patients with different mRS grades,and used the receiver operating characteristic(ROC)curve and the area under the curve(AUC)to analyze the efficacy of miRNA in predicting the functional outcome of mRS evaluation.Results The results of Spearman correla-tion analysis showed that the expression level of miR-17-5p was negatively correlated with the classification of the Wada Drinking Water Test(r=-0.317)and the classification of the Functional Oral Feeding Scale(r=-0.457,P<0.05).Compared with the good functional outcome group,the poor functional outcome group had a lower proportion of males,shorter disease course,and higher expression level of miR-103a-3p,the differ-ences were statistically significant(P<0.05).The results of ROC curve analysis showed that miR-103a-3p(AUC=0.709,95%CI:0.611-0.808)had the ability to distinguish functional outcomes in mRS evaluation.However,miR-140-5p(AUC=0.514,95%CI:0.405-0.624)and miR-17-5p(AUC=0.527,95%CI:0.414-0.637)did not have the ability.Conclusion The expression level of plasma miR-17-5p is related to the severi-ty of dysphagia in patients in the recovery period of ischemic stroke,and miR-103a-3p is helpful for judging the functional outcomes of patients in the recovery period of ischemic stroke.

Objective To target at the NKG2A-HLA-E inhibitory axis,a pluripotent stem cell(iPSC)-derived geneti-cally engineered natural killer cells(NK cells)with NKG2A knockout(NKG2A KO-iNK)were prepared and then their tumor-killing efficacy was evaluated in vitro.Methods NKG2A was knocked out in iPSCs using gene-editing technology.These cells were then differentiated into NKG2A KO-iNK cells.Surface markers at each differentiation stage were analyzed by flow cytometry.Western blot confirmed NKG2A knockout,and flow cytometry assessed expres-sion of activating receptors(NKG2D)and natural cytotoxicity receptors(NKp30,NKp44,NKp46)in NKG2A KO-iNK cells.Cytotoxic activity against tumor cell lines with varying human leukocyte antigen E(HLA-E)expression level was evaluated via lactate dehydrogenase(LDH)release assay.Results Co-transfection of iPSCs with Cas9 pro-tein and three small-guide RNAs(sgRNAs)targeting at exons 1 and 2 of the KLRC1 gene(encoding NKG2A)suc-cessfully generated monoclonal NKG2A-knockout iPSCs(NKG2A KO-iPSCs)with a single T-base insertion in exon 1.During iPSC differentiation into NK cells,CD34 expression reached 30％-50％at the embryoid body(EB)stage(day 8),while CD56 and CD 16 expression exceeded 80％by day 28.Western blot confirmed complete NKG2A knockout in NKG2A KO-iNK cells.Flow cytometry revealed comparable expression level of activating receptor NKG2D and cytotox-icity receptors(NKp30,NKp44,NKp46)between NKG2A KO-iNK and wild-type iNK(WT-iNK)cells.The LDH assay results indicated that the cytotoxic activity of NKG2A KO-iNK cells against the HLA-E highly-expressed B-cell precursor leukemia cell line Nalm6 cells was significantly higher than that of WT-iNK cells,while there was no signif-icant difference between them and human myeloma cell line H929 cells with low HLA-E expression and human hepa-tocellular carcinoma cell line HepG2 cells with almost no HLA-E expression.Interferon-γ(IFN-γ)pretreatment up regulated HLA-E expression in Nalm6 cells,further amplifying NKG2A KO-iNK-mediated cytotoxicity.Conclusions By disrupting the NKG2A-HLA-E inhibitory axis,NKG2A KO-iNK cells exhibit markedly enhanced in vitro cytotoxic-ity against HLA-E-high tumor cells.This result highlights their potential function as a novel adoptive cell therapy strategy for cancers reliant on HLA-E-mediated immune evasion.

Objective To investigate the therapeutic effect of combination treatment of transcatheter arterial chemoembolization(TACE),micro wave ablation(MW A)and targeted immunotherapy for hepatocellular carcinoma(HCC).Methods The clinical data of HCC patients,who were admitted to the Affiliated Central Hospital of Jiangnan University of China to receive TACE from August 2016 to August 2023,were retrospectively analyzed.Based on the inclusion criteria,a total of 252 patients were included in this study.According to the therapeutic scheme,the patients were divided into combination group(receiving TACE,MWA,targeted therapy and immunotherapy,n=41),and control group(receiving TACE alone,n=211).The overall survival(OS)and progression-free survival(PFS)of the two groups were statistically analyzed.After propensity score matching at 1∶1 ratio,the clinical effects of the two groups were analyzed.According to different data,t-test,test,Kaplan-Meier curve,logarithmic rank test,Cox regression analysis,or Cox proportional risk model analysis was used to make statistical analysis.Results Multivariate regression analysis showed that tumor number,maximum diameter,invasion of large vessels,tumor capsule,AFP level,glutamic oxalacetic transaminase,BCLC stage and Child-Pugh stage were the independent risk factors for patient survival.Imaging response and combination treatment were the protective factors for survival.After propensity score matching,a total of 37 pairs of patients were obtained,and the baseline data were comparable between the groups.The differences in OS and PFS between the two groups were statistically significant.Combination treatment of TACE,MWA,targeted therapy and immunotherapy could significantly prolong OS and PFS in HCC patients.Conclusion Compared with TACE alone,combination use of TACE,MWA,targeted therapy and immunotherapy is a more effective therapeutic scheme for HCC,it can remarkably and effectively improve OS and PFS in HCC patients.

With the development of medical technology and interventional equipment,neurointervention has become an important treatment method for cerebrovascular diseases.Intravascular stenting plays a crucial role in the treatment of cerebral artery stenosis and intracranial aneurysms,and its clinical efficacy and safety are constantly improving.However,as the neurointervention enters the mature stage,the long-term effect of the interventional materials placed within the brain and the problem of the non-degradable nature of the stent material have got obvious concern in clinical practice.The application of biodegradable materials holds promise for solving this dilemma,as their degradation products can be absorbed or excreted by the body.The development history of the biodegradable stents shows that biodegradable stents began to be studied as early as in the 1980s.Due to the features of intracranial arteries,the stents used for intracranial stenosis have to meet higher clinical requirements in terms of flexibility,precision and the influence of degradation products,which are still studied by animal experiment and preliminary clinical research.Flow-diverter devises have already achieved definite clinical effect.Due to the disadvantages of conventional metal stents,such as artifacts,which have a long-term influence on the imaging quality,the degradable flow-diverter devices have become a current research hot spot,the materials include metal,metal-polymer mixture,polymer,etc.Researchers are still exploring the material selection,control of degradation time and optimization of pore density.In conclusion,biodegradable stents used for intracranial stenosis and biodegradable flow-diverter devices have broad application prospects,although more studies are need to be conducted before biodegradable stents can be widely used in clinical practice.

Objective:To retrospectively analyze the anesthetic management characteristics of children undergoing resection of pheochromocytoma and paraganglioma (PPGL).Methods:The clinical data from patients undergoing resection of PPGL and confirmed histologically from January 1, 2010 to June 30, 2023 were retrospectively collected. The baseline characteristics, intraoperative conditions and postoperative complications were recorded.Results:The clinical data from 47 pediatric patients were analyzed. The overall incidence of hemodynamic instability events was 68% (32 cases). Lowering preoperative blood pressure to normal levels and the maximum diameter of tumor≥6 cm was helpful in reducing the incidence of the intraoperative hemodynamic instability events ( P<0.05). Postoperative hypotension developed in 7 cases, acute left heart failure in 1 case, arrhythmia in 1 case, adrenocortical insufficiency in 4 cases, and pulmonary infection in 13 cases. Conclusions:Thorough preoperative preparation, evidence-based anesthetic management, and meticulous postoperative vital sign monitoring can increase the perioperative safety for children undergoing resection of PPGL, thereby reducing the incidence of complications.

BACKGROUND:Traumatic spinal cord injury primarily relies on scale assessment and imaging examinations in clinical practice.However,there are limitations in predicting the prognosis of the injury.Therefore,the use of metabolomics technology for biomarker screening is significant for estimating the extent of damage,injury and recovery,as well as developing new therapies. OBJECTIVE:To characterize the metabolic features of patients with traumatic spinal cord injury using metabolomics technology and explore potential biomarkers and disrupted metabolic pathways. METHODS:Serum and urine samples were collected from 20 patients with traumatic spinal cord injury(observation group)and 10 healthy subjects(control group).Metabolites were analyzed and multivariate statistical analysis was then performed for data processing to screen differential metabolites.Metabolic pathway enrichment was performed using MetaboAnalyst software.Logistic regression was applied to construct a biomarker combination model,and its relationship with the American Spinal Injury Association grading was analyzed. RESULTS AND CONCLUSION:Significant differences in 160 and 73 metabolites were detected in the serum and urine samples of the two groups,respectively.Pathway enrichment analysis showed evident disturbances in lipid metabolism after traumatic spinal cord injury,including sphingolipid,arachidonic acid,α-linolenic acid,and arachidonic acid metabolism,as well as glycerophospholipid and inositol phosphate biosynthesis.The combination of two identified biomarkers,telmisartan and quercetin glycoside,showed a correlation with the American Spinal Injury Association grading in both serum and urine levels.Thus,metabolomics technology provides assistance in further understanding the pathological mechanisms of traumatic spinal cord injury and screening therapeutic targets.The identified metabolic biomarker combination may serve as a reference for assessing the severity of traumatic spinal cord injury.

Objective:To analyze the current adoption of palliative care by patients with unresectable metastatic colorectal cancer (mCRC) in China.Methods:From 1 March 2023 to 30 June 2023, a questionnaire survey was conducted by random sampling. An exclusive research platform for the Blue Book on Clinical Diagnosis and Treatment of Metastatic Colorectal Cancer. An online questionnaire was sent to medical oncologists (including chief physicians, associate chief physicians, attending physicians and residents) in general hospitals and oncology hospitals in four major regions of East, Central, South and Northeast China. The questionnaire contained 28 questions requesting basic information about doctors, the number of patients with mCRC, the status of treatment from first to fourth line and beyond, points concerning treatment of pain in patients with mCRC, and expectations for the future. A medical team was responsible for the quality control of data collected, whereas statisticians performed the data cleaning and sorting and statistical analysis.Results:A total of 300 clinical questionnaires were collected, including 217 (72%) from doctors in general hospitals and 83 (28%) from doctors in oncology hospitals. Senior physicians (including associate chief physicians and chief physicians) accounted for 65% of the respondents, attending physicians 30%, and residents 5%. Within 3 months (average for each month), 46.4±26.6% patients were diagnosed with recurrent or unresectable mCRC by each physician, 51.6±26.8% of the patients being in cancer hospitals and 44.4±26.3% in general hospitals. One hundred percent of patients receiving first-line treatment received palliative care, as did 80.3% of those receiving second-line treatment, 58.2% of those receiving third-line treatment, and 35.1% of those receiving ≥fourth-line treatment. The primary factor governing selection of first-line treatment was guideline recommendations, whereas comorbidities and the patients' physical status dictated second line to fourth line treatment. Standard first-line treatment was administered to 93.8% of eligible patients, standard second-line treatment to 94.3%; and standard third-line treatment to 73.5%. First-line therapy included targeted therapy in 63.6% of patients and immunotherapy in 2.8%; second-line therapy included targeted therapy in 63.0% of patients and immunotherapy in 2.0%; third-line therapy included targeted therapy in 59.2% of patients and immunotherapy in 2.2%; and fourth-line therapy included targeted therapy in 48.7% of patients and immunotherapy in 3.1%. First-line treatment lasted an average of 9.6 months, second-line treatment 6.7 months, third-line treatment 4.9 months, and fourth-line treatment 3.7 months. More than 70% of the patients maintained a good quality of life after receiving first and second-line treatment and more than 60% of them had ECOG performance scores of 0–1. After receiving third- and fourth-line treatment, 50%–60% of patients maintained a good quality of life and 40%–50% of them maintained ECOG performance scores of 0–1. The survey also revealed that the main deficiencies in treatment were limited effectiveness of third-line treatment, insufficient availability and opportunity for clinical research, popularity of new drugs or new drug combination strategies, and limited channels for participation in multidisciplinary diagnosis and treatment. Clinicians reported looking forward to participating in more clinical research on new drugs, hearing about the experience of experts in the field, and discovery of new targets and new drugs that increased the options for posterior line treatment of colorectal cancer.Conclusions:This report objectively summarizes the current situation, treatment difficulties, and expectations of frontline physicians concerning management of mCRC, thus providing a basis for decision-making and future direction for the diagnosis and research on treatment of mCRC.