Objective This study investigated the diversity of rodent populations and the infection status of Bartonella at three ports along the China-Mongolia border in 2022. Methods Rodents at three Belt and Road ports along the China-Mongolia border, namely Ganqimaodu, Erenhot, and Zhuengadabuqi, were morphologically identified. The Bartonella citrate synthase(gltA)gene was amplified by nested polymerase chain reaction(PCR), and PCR-positive products were sequenced. The resulting sequences were then analyzed for genetic characteristics. Phylogenetic analysis was performed using MEGA 11.0 software using Neighbor-Joining and Maximum-Likelihood method. Results A total of 94 rodents were captured, representing seven species from five families and six genera: Mus musculus, Meriones unguiculatus, Meriones meridianus, Spermophilus dauricus, Allactaga sibirica, Dipus sagitta, and Phodopus roborovskii. Among them, M. unguiculatus was the most abundant species, with 58 rodents, accounting for 61.70% of the total. Overall,11 positive Bartonella pathogen sequences were obtained from the three ports, with a positive detection rate of 11.70%(11/94). The infected rodent species included M. unguiculatus, M. meridianus, and A. sibirica, and two species of Bartonella were detected. Conclusions Rodents at Ganqimaodu, Erenhot, and Zhuengadabuqi ports along the China-Mongolia border were naturally infected with Bartonella. Rodent monitoring and pathogen prevention and control in this area should be strengthened.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Acute pancreatitis(AP),one of the most common acute abdominal conditions in clinical practice,is typically self-limiting.However,approximately 20%of cases progress to severe acute pancreatitis,characterized by persistent systemic inflammatory response syndrome and multiple-organ dysfunction syndrome,with a high mortality rates.The pathogenesis of AP involves complex pathophysiological processes,and in recent years,the role of oxidative stress(OS)in AP has garnered increasing attention.OS refers to an imbalance between reactive oxygen species production and antioxidant capacity following endogenous or exogenous stimuli,which can lead to pancreatic cell injury,exacerbation of inflammatory responses,and organ dysfunction.Notably,antioxidants have demonstrated efficacy in reducing OS-induced pancreatic damage and multi-organ dysfunction in animal models.This article reviews current molecular mechanisms of OS in AP,its role in disease progression and recent advances in antioxidant-based therapeutic strategies for AP.

AIM To analyze the dynamic change patterns of aflatoxin B1,aflatoxin B2,aflatoxin G1,aflatoxin G2,T-2 toxin and deoxynivalenol contents during the fermentation of Massa Medicata Fermentata.METHODS The analysis was performed on a 40 ℃ thermostatic Waters ACQUITY UPLC HSS T3 column(100 mm×2.1 mm,1.8 μm),with the mobile phase comprising of 0.01％formic acid-[acetonitrile-methanol(1∶1)]flowing at 0.3 mL/min,and electron spray ionization source was adopted in positive ion scanning with multiple reaction monitoring mode.RESULTS Six mycotoxins showed good linear relationships within their own ranges(R2＞0.998 0),whose average recoveries were 76.1％-119.3％with the RSDs of 0.49％-9.27％,and except for deoxynivalenol,their contents demonstrated the trends of growing out of nothing and gradually increasing.CONCLUSION The risk of mycotoxin infection exists in the fermentation of Massa Medicata Fermentata.This simple,efficient,rapid and sensitive method can provide a reference for whole-process monitoring the fermentation process for Massa Medicata Fermentata.

Acute pancreatitis(AP),one of the most common acute abdominal conditions in clinical practice,is typically self-limiting.However,approximately 20%of cases progress to severe acute pancreatitis,characterized by persistent systemic inflammatory response syndrome and multiple-organ dysfunction syndrome,with a high mortality rates.The pathogenesis of AP involves complex pathophysiological processes,and in recent years,the role of oxidative stress(OS)in AP has garnered increasing attention.OS refers to an imbalance between reactive oxygen species production and antioxidant capacity following endogenous or exogenous stimuli,which can lead to pancreatic cell injury,exacerbation of inflammatory responses,and organ dysfunction.Notably,antioxidants have demonstrated efficacy in reducing OS-induced pancreatic damage and multi-organ dysfunction in animal models.This article reviews current molecular mechanisms of OS in AP,its role in disease progression and recent advances in antioxidant-based therapeutic strategies for AP.

Objective:To investigate the regulatory effect of zinc finger transcription factor 580 (ZNF580) gene on autophagy and extracellular matrix (ECM) secretion in human pancreatic cancer cells PANC1.Methods:PANC1 cells were transfected with 500 ng/ml short hairpin RNA-ZNF580 (shRNA-ZNF580) and a ZNF580 expression vector with a green fluorescent protein reporter gene (GFP-ZNF580) using lentiviral transfection to establish the ZNF580-silenced group and ZNF580-overexpression group, respectively. PANC1 cells were treated with 10 mmol/L rapamycin (RA), a cell autophagy inducer, and the autophagy inhibitor LY294002 for 2 hours to construct the autophagy-induced group and autophagy-inhibited group, respectively. The autophagy inhibition+ZNF580 silencing group was established by transfecting PANC1 cells with 500 ng/ml sh-ZNF580 using lentiviral transfection while simultaneously adding 10 mmol/L LY294002. PANC1 cells cultured in conventional medium served as control group. The expression levels of ZNF580 protein and autophagy-related proteins ATG7 and LC3 in PANC1 cells from each group were detected by Western blot. The expression changes of ECM secretion-related markers type I collagen (Col-Ⅰ), Col-Ⅲ, fibronectin (FN), and tumor necrosis factor-α (TNF-α) in PANC1 cells were measured by ELISA.Results:Compared with control group, the protein expression levels of ATG7, LC3-Ⅰ, and LC3-Ⅱ in PANC1 cells of the ZNF580-silenced group were significantly decreased (0.40±0.04 vs 0.81±0.13, 0.66±0.08 vs 2.0±0.45, 0.78±0.10 vs 1.89±0.23), while they were significantly increased in the ZNF580-overexpression group (2.07±0.17 vs 0.83±0.09, 1.21±0.37 vs 0.88±0.09, 0.77±0.16 vs 0.37±0.06). The protein expression level of ZNF580 in PANC1 cells of the autophagy inhibition group was significantly down-regulated compared with the control group (0.40±0.15 vs 1.07±0.18), while it was significantly up-regulated in the autophagy induction group (1.59±0.25 vs 0.67±0.09). Compared with the control group, the levels of extracellularly secreted Col-Ⅰ, Col-Ⅲ, FN, and TNF-α in PANC1 cells were significantly decreased in the ZNF580-silenced group (5.02±0.81 vs 8.38±0.83, 6.17±0.83 vs 10.73±1.69, 28.66±2.47 vs 45.20±4.31, 10.09±1.32 vs 19.48±2.77), which were significantly increased in the ZNF580-overexpression group (19.28±2.05 vs 8.38±0.83, 28.29±5.96 vs 10.73±1.69, 103.22±6.37 vs 45.20±4.31, 46.78±6.96 vs 19.48±2.77), significantly decreased in the autophagy inhibition group (5.10±0.66 vs 9.01±1.24, 7.22±0.67 vs 11.83±1.71, 28.45±2.82 vs 43.51±4.38, 12.16±2.13 vs 20.53±3.65, respectively), and significantly increased in the autophagy induction group (20.49±3.68 vs 9.01±1.24, 26.58±3.96 vs 11.83±1.71, 73.18±7.15 vs 43.51±4.38, 41.11±8.87 vs 20.53±3.65). Compared with the autophagy inhibition group and the ZNF580-silenced group, the levels of extracellularly secreted Col-Ⅰ, Col-Ⅲ, FN, and TNF-α in PANC1 cells of the autophagy inhibition+ZNF580 silencing group were significantly decreased (Col-Ⅰ: 3.36±1.25 vs 5.73±0.62 and 5.57±0.35; Col-Ⅲ: 4.15±0.16 vs 6.24±0.90 and 6.71±0.34; FN: 18.31±2.00 vs 26.46±1.18 and 27.09±2.01; TNF-α: 6.81±0.46 vs 9.96±1.87 and 10.62±0.65). All the above differences were statistically significant (all P value <0.05). Conclusions:The transcription factor ZNF580 could positively regulate the levels of autophagy and ECM secretion in PANC1 cells. The combined application of ZNF580 gene silencing and autophagy inhibitors can significantly inhibit ECM secretion in PANC1 cells.

Objective To understand the current situation of healthcare-associated infection(HAI)in China,pro-vide data support and decision-making basis for formulating scientific and effective strategies for HAI prevention and control.Methods A nationwide cross-sectional survey on HAI was conducted among various types and levels of medical institutions in China according to a unified protocol of bedside surveys and case investigations.Results In 2024,a total of 5 736 medical institutions and 2 751 765 patients were surveyed.Among them,34 889 HAI cases were identified,with a prevalence rate of 1.27％.The number of HAI episodes was 38 032,and case prevalence rate was 1.38％.The prevalence rate of HAI in medical institutions in different regions of China ranged from 0.66％to 2.35％.Among medical institutions of different scales,those with a bed capacity of ≥900 had the high-est incidence of HAI,reaching 1.65％.The most common infection site was the lower respiratory tract(44.66％),followed by the urinary tract(12.94％),surgical site(9.32％),upper respiratory tract(7.02％),and bloodstream infection(5.78％).The top 3 departments with the highest HAI rates were the general intensive care unit(10.02％),department of neurosurgery(5.51％),and department(group)of hematology(5.34％).A total of 23 238 strains of HAI pathogens were detected,with 10 714 strains(46.10％)from lower respiratory tract speci-mens.The top 5 detected strains were Klebsiella pneumoniae(14.76％),Pseudomonas aeruginosa(13.33％),Escherichia coli(12.79％),Acinetobacter baumannii(9.23％),and Staphylococcus aureus(7.88％).231 944 pa-tients underwent class Ⅰ incision surgery were monitored,with 1 647 cases experienced surgical site infection,and the prevalence rate of surgical site infection was 0.71％.The number of patients who should undergo pathogen de-tection(patients receiving therapeutic and therapeutic combined prophylactic antimicrobial agents)was 715 179,while the actual number was 480 492,with a pathogen detection rate of 67.18％.425 225 patients received patho-genic detection before treatment,with a detection rate of 59.46％.Conclusion The overall HAI prevalence in Chi-na is lower,showing disparities among medical institutions of different regions and scales.Therefore,precise imple-mentation of measures is necessary for HAI prevention and control,with a focus on high-risk institutions and high-risk departments,key areas,and critical procedures.All levels of medical institutions should continuously reduce the incidence of HAI by strengthening monitoring,standardizing the use of antimicrobial agents,and reinforcing basic HAI prevention and control measures.

Objective:To establish a mouse model of liver cancer resistant to PD-1 monoclonal antibody and analyze the changes in its metabolomics to explore the potential mechanism of drug resistance.Methods:BALB/c mice were randomly divided into control and treatment groups after being loaded with tumor,and a normal group was additionally set up.The normal and control groups were injected with saline,and the treatment group was injected with PD-1 monoclonal antibody,after which the mice in the treatment group were screened for drug resistant and response groups.Observed the drug-resistant situation,body mass,tumor growth and survival rate of mice in each group,calculate the spleen index.The pathological features of tumor tissues were observed by HE staining method.Serum metabolites were detected by non-targeted metabolomics.Finally,a bivariate Pearson correlation analysis was conducted between the differential serum metabolites and tumor size.Results:The tumor-bearing mouse model with PD-1 monoclonal antibody resistance was successfully established,and the drug resistance rate of the mice was 50％.Compared with the normal and response groups,mice in the resistant group showed an increase in body weight,a significant increase in tumor volume,a decrease in survival rate,and a significant increase in splenic index.There was less lymphocyte infiltration in the tumor tissue.Metabolomics analysis showed that the serum levels of glutamic acid and aspartic acid increased and malic acid decreased in the resistant mice compared with the response group,and these changes were closely related to the arginine biosynthesis pathway.Conclusions:The tumor-bearing mouse model with PD-1 monoclonal antibody resistance was successfully established.The changes in its peripheral serum metabolomics mainly involve arginine metabolism and the related changes of aspartate,malate and glutamate.

Objective:To investigate the relationship between visual recovery and non-treponemal serologic test titers [tolulized red unheated serum test (TRUST) or rapid plasma reagin (RPR)] in patients with isolated ocular syphilis and those with ocular syphilis combined with neurosyphilis.Methods:A total of 35 ocular syphilis patients treated at the Department of Ophthalmology, the First Affiliated Hospital of Soochow University, and the Department of Dermatology, the Fifth People′s Hospital of Suzhou between 2016 and 2024 were enrolled. Pre-treatment serum TRUST/RPR and treponema pallidum particle agglutination (TPPA) assay results were collected for all 35 patients. Cerebrospinal fluid (CSF) biochemical, routine, TRUST/RPR, and TPPA results were obtained for 29 patients. Visual acuity (logMAR) before and after treatment was recorded for 21 patients (34 eyes). Pearson or Spearman correlation analysis was used to assess the relationship between pre-and post-treatment visual acuity, degree of visual recovery, and serum titers.Results:No significant differences in titer distribution were observed among the 35 ocular syphilis patients based on age or sex ( P>0.05). Among the 29 patients who underwent lumbar puncture, 17(58.62%) were diagnosed with ocular syphilis combined with neurosyphilis, while 12(41.38%) had isolated ocular syphilis. The proportion of patients with high pre-treatment serum titers did not differ significantly between the two groups ( P=0.294). The degree of post-treatment visual recovery showed a positive correlation with pre-treatment serum titers, indicating that higher initial titers were associated with better visual recovery (34 eyes, r=-0.302, P=0.081). Post-treatment visual acuity was positively correlated with pre-treatment visual acuity (34 eyes, r=0.547, P=0.001), suggesting that patients with poor baseline vision had worse post-treatment visual outcomes. The median visual improvement was logMAR 0.560 in the isolated ocular syphilis group and logMAR 0.202 in the neurosyphilis-combined group, with no significant difference between the two ( P=0.322). Conclusions:Ocular syphilis patients with higher pre-treatment titers exhibit better visual recovery, while poor post-treatment visual outcomes are associated with low baseline visual acuity.

Objective:To investigate the relationship between visual recovery and non-treponemal serologic test titers [tolulized red unheated serum test (TRUST) or rapid plasma reagin (RPR)] in patients with isolated ocular syphilis and those with ocular syphilis combined with neurosyphilis.Methods:A total of 35 ocular syphilis patients treated at the Department of Ophthalmology, the First Affiliated Hospital of Soochow University, and the Department of Dermatology, the Fifth People′s Hospital of Suzhou between 2016 and 2024 were enrolled. Pre-treatment serum TRUST/RPR and treponema pallidum particle agglutination (TPPA) assay results were collected for all 35 patients. Cerebrospinal fluid (CSF) biochemical, routine, TRUST/RPR, and TPPA results were obtained for 29 patients. Visual acuity (logMAR) before and after treatment was recorded for 21 patients (34 eyes). Pearson or Spearman correlation analysis was used to assess the relationship between pre-and post-treatment visual acuity, degree of visual recovery, and serum titers.Results:No significant differences in titer distribution were observed among the 35 ocular syphilis patients based on age or sex ( P>0.05). Among the 29 patients who underwent lumbar puncture, 17(58.62%) were diagnosed with ocular syphilis combined with neurosyphilis, while 12(41.38%) had isolated ocular syphilis. The proportion of patients with high pre-treatment serum titers did not differ significantly between the two groups ( P=0.294). The degree of post-treatment visual recovery showed a positive correlation with pre-treatment serum titers, indicating that higher initial titers were associated with better visual recovery (34 eyes, r=-0.302, P=0.081). Post-treatment visual acuity was positively correlated with pre-treatment visual acuity (34 eyes, r=0.547, P=0.001), suggesting that patients with poor baseline vision had worse post-treatment visual outcomes. The median visual improvement was logMAR 0.560 in the isolated ocular syphilis group and logMAR 0.202 in the neurosyphilis-combined group, with no significant difference between the two ( P=0.322). Conclusions:Ocular syphilis patients with higher pre-treatment titers exhibit better visual recovery, while poor post-treatment visual outcomes are associated with low baseline visual acuity.