Objective To investigate the clinical application value of the combined detection of fecal syndecan 2(SDC2)and tissue factor pathway inhibitor 2(TFPI2)gene methylation in the diagnosis of colorectal cancer and advanced adenoma.Methods 124 pa-tients with colorectal lesions,including 43 colorectal cancer,52 advanced adenoma,and 29 non-advanced adenoma,and 46 patients with other gastrointestinal diseases such as colorectal inflammatory diseases,ulcers,etc.,who visited 5 hospitals in Zhengzhou from 2020 to 2023 were enrolled as the disease group.In addition,78 healthy individuals who underwent physical examinations in the same period were selected as the healthy control group.Their fecal samples were collected before undergoing colonoscopy,and the methyla-tion levels of SDC2 and TFPI2 genes were detected using the quantitative methylation-specific PCR(qMSP).Results The positive rates of the combined detection of SDC2 and TFPI2 gene methylation in the colorectal cancer group and advanced adenoma group(95.34％and 88.46％)were significantly higher than those in the non-advanced adenoma group(48.27％,x2=18.75/13.63,P＜0.05)and healthy controls(3.84％,x2=96.38/91.54,P＜0.05).In the colorectal cancer group,the postoperative positive rate of the combined detection in 34 patients with positive methylation of SDC2 and TFPI2(5.88％)was significantly lower than the preoperative positive rate(95.34％,x2=54.74,P＜0.05).Moreover,the mean Ct values of methylation of SDC2 and TFPI2 genes(32.38±3.72 and 31.85±3.21)in the colorectal cancer group were significantly lower than that in the advanced adenoma group(35.07±3.09 and 34.96±2.78,t=3.84 and 5.05,P＜0.05).The analysis results of the ROC curve showed that the sensitivities of SDC2,TFPI2,and their combination detection in the diagnosis of colorectal cancer were 86.40％,88.37％,and 89.35％,respectively,while in differenti-ating advanced adenoma they were 73.52％,66.73％,and 80.15％,respectively.The combined detection of SDC2 and TFPI2 in differ-entiating colorectal cancer and advanced adenoma achieved the highest diagnostic efficacy(AUCROC=0.889 and 0.738,respectively).Conclusion The combined detection of methylation of SDC2 and TFPI2 genes in fecal samples has high diagnostic value for colorectal cancer and advanced adenomas,and also has certain clinical application value for the progression and postoperative monitoring of the disease.

Objective To examine the changing prevalence and antimicrobial resistance profiles of Burkholderia cepacia in 52 hospitals across China from 2015 to 2021.Methods A total of 9 261 strains of B.cepacia were collected from 52 hospitals between January 1,2015 and December 31,2021.Antimicrobial susceptibility of the strains was tested using Kirby-Bauer method or automated antimicrobial susceptibility testing systems according to a unified protocol.The results were interpreted according to the breakpoints released in the Clinical & Laboratory Standards Institute(CLSI)guidelines(2023 edition).Results A total of 9 261 strains of B.cepacia were isolated from all age groups,especially elderly patients.The proportion was 11.1％(1 032 strains)in children,significantly lower than the proportion in adults.About half(46.5％,4 310/9 261)of the strains were isolated from patients at least 60 years old and 42.3％(3 919/9 261)of the strains were isolated from young adults.Most isolates(71.1％)were isolated from sputum and respiratory secretions,followed by urine(10.7％)and blood samples(8.1％).B.cepacia isolates were highly susceptible to the five antimicrobial agents recommended in the CLSI M100 document(33rd edition,2023).B.cepacia isolates showed relatively higher resistance rates to meropenem and levofloxacin.However,the resistance rates to ceftazidime,trimethoprim-sulfamethoxazole,and minocycline remained below 8.1％.The percentage of B.cepacia strains resistant to levofloxacin was the highest compared to other antibiotics in any of the three age groups(from 12.4％in the patients＜18 years old to 20.6％in the patients aged 60 years or older).Conclusions B.cepacia is one of the clinically important non-fermenting gram-negative bacteria.Accurate and timely reporting of antimicrobial susceptibility test results and ongoing antimicrobial resistance surveillance are helpful for rational prescription of antimicrobial agents and proper prevention and control of nosocomial infections.

Objective To systematically evaluate the impact of continuous renal replacement therapy(CRRT)on the pharmacokinetics of polymyxin B,explore its possible impacting factors.Methods PubMed,Embase,Co-chrane Library,Web of Science,VIP database,China National Knowledge Infrastructure(CNKI),SinoMed,and Wanfang data were retrieved.The study subjects were patients receiving CRRT and polymyxin B.Observational studies,case reports,and reviews were included.The outcome indicators included therapeutic drug monitoring re-sults,pharmacokinetic parameters,and CRRT parameters.The retrieval time was from the inception of each data-base to January 2025.The quality of literatures was evaluated with ClinPK tool.Two researchers independently conducted literature screening,data extraction,and quality evaluation.Results A total of 12 literatures were ulti-mately included in analysis,including 1 review,3 case reports,and 8 observational studies.Five studies showed that the clearance rate during CRRT period(1.3-6.66 L/h)was higher than that during non-CRRT period(0.5-3.9 L/h).Five studies reported that the area under the steady-state 24-hour drug concentration-time curve(AUCss,24h)during CRRT period(21.58-75.1 mg·h/L)was lower than that during non-CRRT period(60.6-118 mg·h/L).Two studies detected drugs in ultrafiltrate or dialysate,with in vitro drug recovery rates ranging from 5.62％to 24.0％.Two studies reported a decrease in drug concentration after passing through a blood filter.Conclusion During CRRT period,polymyxin B presents higher clearance rate and lower blood drug concentration,and some patients have lower AUCss.24h than the therapeutic target.The mechanism of this change during CRRT is not yet clear,the therapy mode and filter type may be potential impacting factors,further research are needed to promote precise anti-infective treatment.

Aim To explore the mechanism by which dioscin regulates IL-17+γδT cells in the treatment of arthritis.Methods A collagen-induced arthritis(CIA)model was established in DBA/1 mice using bovine type Ⅱ collagen.The mice were randomly divid-ed into the CIA model group,methotrexate(MTX)positive control group,and dioscin low-dose(Dioscin-L),medium-dose(Dioscin-M),and high-dose(Dios-cin-H)groups.After intervention,the therapeutic effects were evaluated using scoring methods.Joint pathological damage was analyzed by hematoxylin and eosin(HE)staining.The levels of anti-collagen-spe-cific antibodies and the pro-inflammatory cytokine IL-17 were measured by ELISA.The expressions of γδT cells and their subtypes,as well as the secretion level of IL-17,were detected by flow cytometry.Results Dioscin significantly reduced the arthritis severity score in collagen-induced arthritis(CIA)mice,alleviated joint pathological damage,inhibited the production of IL-17 by splenic lymphocytes and the levels of anti-col-lagen-specific antibodies total IgG and IgG3,and de-creased the proportion of γδT cells in the lymph nodes,splenic γδT cells,and the Vδ4+T-cell subset.The level of IL-17 produced by the Vδ4 subtype in the lymph nodes of the intervention groups was lower than that in the model group,but the difference was not sta-tistically significant.Conclusion Dioscin has signifi-cant therapeutic effect on CIA,and its mechanism may be through the inhibition of γδT cells,but it is unlikely to be related to IL-17 derived from γδT cells.

Objective:To conduct a scoping review of studies related to social competence intervention in pediatric brain tumor survivors, aiming to identify the contents, outcome and effects of Social competence intervention and provide a reference for future.Methods:Based on the scope review research framework developed by Arksey and O′Malley, a systematic search was conducted in Web of Science, PubMed, Cochrane Library, Embase, China National Knowledge Infrastructure, VIP, Wanfang and China Biology Medicine disc until 30 July, 2024. The included studies were summarized and analyzed.Results:A total of 10 pieces of literature were included, including 5 quasi-experimental studies, 3 mixed-method studies, 1 randomize controlled trials, and 1 case study. The social competence intervention program included group social intervention, multimodal intervention, expressive art intervention, and peer intervention. Each program focused on training approximately 3-6 social skills. The intervention forms were all face-to-face interventions. The intervention duration was usually 8 weeks. Intervention had varying degrees of impact on social skills, clinical health outcomes, participation indicators and psychological status.Conclusions:Social competence interventions are safe and feasible for pediatric brain tumor survivors and demonstrate positive impacts on their social information processing abilities, social adaptation, and quality of life. Future research should actively explore and innovate new forms of social competence intervention based on China′s national conditions and cultural background, and develop comprehensive and personalized intervention plans.

Objective To investigate the application effect of cold snare endoscopic mucosal resection(CS-EMR)in the treatment of 6 to 9 mm colorectal small polyps.Methods A total of 82 patients with small colonic polyps in our hospital from March 2022 to August 2023 were collected and divided into the observation group(45 cases received CS-EMR)and the control group[37 cases received hot snare endoscopic mucosal resection(HS-EMR)]according to different surgical methods.The clinical efficacy,polyp resection status,complete polyp resection rate,perioperative indicators and occurrence of complications were compared between the two groups.Results Follow-up for 1 month after operation,the effective rate of treatment in the observation group was higher than that in the control group(P<0.05).There was no statistically significant difference in the polyp resection status or perioperative indicators between the two groups(P>0.05).There was no statistically significant difference in the complete polyp resection rates of patients with different pathological types or total complete resection rate between the two groups(P>0.05).The incidence of delayed bleeding and endoscopic hemostasis rate in the observation group were lower than those in the control group(P<0.05).Conclusion The complete resection rate of 6～9 mm colorectal polyps through CS-EMR was comparable to that of HS-EMR,and CS-EMR has a better efficacy and lower risk of perioperative bleeding,along with higher safety.

Objective To investigate the distribution and antimicrobial resistance profiles of common pathogens isolated from cerebrospinal fluid(CSF)in CHINET program from 2015 to 2021.Methods The bacterial strains isolated from CSF were identified in accordance with clinical microbiology practice standards.Antimicrobial susceptibility test was conducted using Kirby-Bauer method and automated systems per the unified CHINET protocol.Results A total of 14 014 bacterial strains were isolated from CSF samples from 2015 to 2021,including the strains isolated from inpatients(95.3％)and from outpatient and emergency care patients(4.7％).Overall,19.6％of the isolates were from children and 80.4％were from adults.Gram-positive and Gram-negative bacteria accounted for 68.0％and 32.0％,respectively.Coagulase negative Staphylococcus accounted for 73.0％of the total Gram-positive bacterial isolates.The prevalence of MRSA was 38.2％in children and 45.6％in adults.The prevalence of MRCNS was 67.6％in adults and 69.5％in children.A small number of vancomycin-resistant Enterococcus faecium(2.2％)and linezolid-resistant Enterococcus faecalis(3.1％)were isolated from adult patients.The resistance rates of Escherichia coli and Klebsiella pneumoniae to ceftriaxone were 52.2％and 76.4％in children,70.5％and 63.5％in adults.The prevalence of carbapenem-resistant E.coli and K.pneumoniae(CRKP)was 1.3％and 47.7％in children,6.4％and 47.9％in adults.The prevalence of carbapenem-resistant Acinetobacter baumannii(CRAB)and Pseudomonas aeruginosa(CRPA)was 74.0％and 37.1％in children,81.7％and 39.9％in adults.Conclusions The data derived from antimicrobial resistance surveillance are crucial for clinicians to make evidence-based decisions regarding antibiotic therapy.Attention should be paid to the Gram-negative bacteria,especially CRKP and CRAB in central nervous system(CNS)infections.Ongoing antimicrobial resistance surveillance is helpful for optimizing antibiotic use in CNS infections.

Objective To investigate the antimicrobial resistance of clinical isolates from elderly patients(≥65 years)in major medical institutions across China.Methods Bacterial strains were isolated from elderly patients in 52 hospitals participating in the CHINET Antimicrobial Resistance Surveillance Program during the period from 2015 to 2021.Antimicrobial susceptibility test was carried out by disk diffusion method and automated systems according to the same CHINET protocol.The data were interpreted in accordance with the breakpoints recommended by the Clinical and Laboratory Standards Institute(CLSI)in 2021.Results A total of 514 715 nonduplicate clinical isolates were collected from elderly patients in 52 hospitals from January 1,2015 to December 31,2021.The number of isolates accounted for 34.3％of the total number of clinical isolates from all patients.Overall,21.8％of the 514 715 strains were gram-positive bacteria,and 78.2％were gram-negative bacteria.Majority(90.9％)of the strains were isolated from inpatients.About 42.9％of the strains were isolated from respiratory specimens,and 22.9％were isolated from urine.More than half(60.7％)of the strains were isolated from male patients,and 39.3％isolated from females.About 51.1％of the strains were isolated from patients aged 65-＜75 years.The prevalence of methicillin-resistant strains(MRSA)was 38.8％in 32 190 strains of Staphylococcus aureus.No vancomycin-or linezolid-resistant strains were found.The resistance rate of E.faecalis to most antibiotics was significantly lower than that of Enterococcus faecium,but a few vancomycin-resistant strains(0.2％,1.5％)and linezolid-resistant strains(3.4％,0.3％)were found in E.faecalis and E.faecium.The prevalence of penicillin-susceptible S.pneumoniae(PSSP),penicillin-intermediate S.pneumoniae(PISP),and penicillin-resistant S.pneumoniae(PRSP)was 94.3％,4.0％,and 1.7％in nonmeningitis S.pneumoniae isolates.The resistance rates of Klebsiella spp.(Klebsiella pneumoniae 93.2％)to imipenem and meropenem were 20.9％and 22.3％,respectively.Other Enterobacterales species were highly sensitive to carbapenem antibiotics.Only 1.7％-7.8％of other Enterobacterales strains were resistant to carbapenems.The resistance rates of Acinetobacter spp.(Acinetobacter baumannii 90.6％)to imipenem and meropenem were 68.4％and 70.6％respectively,while 28.5％and 24.3％of P.aeruginosa strains were resistant to imipenem and meropenem,respectively.Conclusions The number of clinical isolates from elderly patients is increasing year by year,especially in the 65-＜75 age group.Respiratory tract isolates were more prevalent in male elderly patients,and urinary tract isolates were more prevalent in female elderly patients.Klebsiella isolates were increasingly resistant to multiple antimicrobial agents,especially carbapenems.Antimicrobial resistance surveillance is helpful for accurate empirical antimicrobial therapy in elderly patients.

Objective To investigate the clinical application value of the combined detection of fecal syndecan 2(SDC2)and tissue factor pathway inhibitor 2(TFPI2)gene methylation in the diagnosis of colorectal cancer and advanced adenoma.Methods 124 pa-tients with colorectal lesions,including 43 colorectal cancer,52 advanced adenoma,and 29 non-advanced adenoma,and 46 patients with other gastrointestinal diseases such as colorectal inflammatory diseases,ulcers,etc.,who visited 5 hospitals in Zhengzhou from 2020 to 2023 were enrolled as the disease group.In addition,78 healthy individuals who underwent physical examinations in the same period were selected as the healthy control group.Their fecal samples were collected before undergoing colonoscopy,and the methyla-tion levels of SDC2 and TFPI2 genes were detected using the quantitative methylation-specific PCR(qMSP).Results The positive rates of the combined detection of SDC2 and TFPI2 gene methylation in the colorectal cancer group and advanced adenoma group(95.34％and 88.46％)were significantly higher than those in the non-advanced adenoma group(48.27％,x2=18.75/13.63,P＜0.05)and healthy controls(3.84％,x2=96.38/91.54,P＜0.05).In the colorectal cancer group,the postoperative positive rate of the combined detection in 34 patients with positive methylation of SDC2 and TFPI2(5.88％)was significantly lower than the preoperative positive rate(95.34％,x2=54.74,P＜0.05).Moreover,the mean Ct values of methylation of SDC2 and TFPI2 genes(32.38±3.72 and 31.85±3.21)in the colorectal cancer group were significantly lower than that in the advanced adenoma group(35.07±3.09 and 34.96±2.78,t=3.84 and 5.05,P＜0.05).The analysis results of the ROC curve showed that the sensitivities of SDC2,TFPI2,and their combination detection in the diagnosis of colorectal cancer were 86.40％,88.37％,and 89.35％,respectively,while in differenti-ating advanced adenoma they were 73.52％,66.73％,and 80.15％,respectively.The combined detection of SDC2 and TFPI2 in differ-entiating colorectal cancer and advanced adenoma achieved the highest diagnostic efficacy(AUCROC=0.889 and 0.738,respectively).Conclusion The combined detection of methylation of SDC2 and TFPI2 genes in fecal samples has high diagnostic value for colorectal cancer and advanced adenomas,and also has certain clinical application value for the progression and postoperative monitoring of the disease.

Objective To examine the changing prevalence and antimicrobial resistance profiles of Burkholderia cepacia in 52 hospitals across China from 2015 to 2021.Methods A total of 9 261 strains of B.cepacia were collected from 52 hospitals between January 1,2015 and December 31,2021.Antimicrobial susceptibility of the strains was tested using Kirby-Bauer method or automated antimicrobial susceptibility testing systems according to a unified protocol.The results were interpreted according to the breakpoints released in the Clinical & Laboratory Standards Institute(CLSI)guidelines(2023 edition).Results A total of 9 261 strains of B.cepacia were isolated from all age groups,especially elderly patients.The proportion was 11.1％(1 032 strains)in children,significantly lower than the proportion in adults.About half(46.5％,4 310/9 261)of the strains were isolated from patients at least 60 years old and 42.3％(3 919/9 261)of the strains were isolated from young adults.Most isolates(71.1％)were isolated from sputum and respiratory secretions,followed by urine(10.7％)and blood samples(8.1％).B.cepacia isolates were highly susceptible to the five antimicrobial agents recommended in the CLSI M100 document(33rd edition,2023).B.cepacia isolates showed relatively higher resistance rates to meropenem and levofloxacin.However,the resistance rates to ceftazidime,trimethoprim-sulfamethoxazole,and minocycline remained below 8.1％.The percentage of B.cepacia strains resistant to levofloxacin was the highest compared to other antibiotics in any of the three age groups(from 12.4％in the patients＜18 years old to 20.6％in the patients aged 60 years or older).Conclusions B.cepacia is one of the clinically important non-fermenting gram-negative bacteria.Accurate and timely reporting of antimicrobial susceptibility test results and ongoing antimicrobial resistance surveillance are helpful for rational prescription of antimicrobial agents and proper prevention and control of nosocomial infections.