Objective: To establish a prediction model for high-risk cardiovascular disease (CVD) among residents aged 35 to 75 years, so as to provide the basis for improving CVD prevention and control measures. Methods: Permanent residents aged 35 to 75 years were selected from Dongcheng District, Beijing Municipality using the stratified random sampling method from 2018 to 2023. Demographic information, lifestyle, waist circumference and blood biochemical indicators were collected through questionnaire surveys, physical examinations and laboratory tests. Influencing factors for high-risk CVD among residents aged 35 to 75 years were identified using a multivariable logistic regression model, and a prediction model for high-risk CVD was established. The predictive effect was evaluated using the receiver operating characteristic (ROC) curve. Results: A total of 6 968 individuals were surveyed, including 2 821 males (40.49%) and 4 147 females (59.51%), and had a mean age of (59.92±9.33) years. There were 1 155 high-risk CVD population, with a detection rate of 16.58%. Multivariable logistic regression analysis showed that gender, age, smoking, central obesity, systolic blood pressure, fasting blood glucose, triglyceride and low-density lipoprotein cholesterol were influencing factors for high-risk CVD among residents aged 35 to 75 years (all P<0.05). The area under the ROC curve of the established prediction model was 0.849 (95%CI: 0.834-0.863), with a sensitivity of 0.693 and a specificity of 0.863, indicating good discrimination. Conclusion The model constructed by eight factors including demographic characteristics, lifestyle and blood biochemical indicators has good predictive value for high-risk CVD among residents aged 35 to 75 years.

Surgical treatment is one of the key approaches for non-small cell lung cancer (NSCLC). Regular postoperative follow-up is crucial for early detection and timely management of tumor recurrence, metastasis, or second primary tumors. A scientifically sound and reasonable follow-up strategy not only extends patient survival but also significantly improves quality of life, thereby enhancing overall prognosis. This consensus aims to build upon the previous version by incorporating the latest clinical research advancements and refining postoperative follow-up protocols for early-stage NSCLC patients based on different treatment modalities. It provides a scientific and practical reference for clinicians involved in the postoperative follow-up management of NSCLC. By optimizing follow-up strategies, this consensus seeks to promote the standardization and normalization of lung cancer diagnosis and treatment in China, helping more patients receive high-quality care and long-term management. Additionally, the release of this consensus is expected to provide insights for related research and clinical practice both domestically and internationally, driving continuous development and innovation in the field of postoperative management for NSCLC.

ObjectiveA multiplex amplification system was constructed based on the capillary electrophoresis platform for simultaneous detection of saliva, semen, and vaginal secretions using tissue-specific RNA markers. The aim of this study is to identify the tissue origin of suspicious body fluid stains found at crime scenes and determine whether the body fluid stains at the crime scene are one or several types among saliva, semen, and vaginal secretions. MethodsThirty saliva samples, forty semen samples, and forty vaginal secretion samples (half from 2015 and half from 2024) were collected from healthy adult volunteers. Through primer designing, system formulation, and PCR condition optimization, a multiplex fluorescent amplification system was constructed. The specificity, sensitivity, and detection ability for mixed samples of this system were investigated, and it was tested using real crime scene materials. In the primer design stage, to reduce the requirements for RNA template quality, the amplification products were set within 80-300 bp. In the system formulation stage, dominant and subordinate primers were mainly considered. By reducing the concentration of dominant primers and increasing that of subordinate primers, a capillary electrophoresis spectrum with an appropriate peak height ratio was finally obtained. Additionally, gradient experiments were designed to adjust the concentrations of PCR reagents and PCR amplification conditions, and multiple versions of DNA amplification enzymes were optimized to achieve the best experimental results. ResultsThrough statistical analysis, there was no significant difference in the capillary electrophoresis of the 3 types of body fluid samples from the two years (2015 and 2024), demonstrating that the sample preservation method in this study can preserve samples for a relatively long time. The composite amplification system constructed in this study exhibited high specificity for all 3 types of body fluid, with no cross-reactions between the markers of each type of body fluid. The minimum detection thresholds for the 3 types of body fluid reached 0.002 9, 0.001 5, and 0.42 mg/L, respectively. This system also had a high degree of discrimination for mixed samples, especially for semen-saliva mixtures, where each body fluid marker could still be successfully detected when the concentration ratio of semen to saliva was 100:1. Meanwhile, in the two actual cases presented in this article, the application of this composite amplification system performed outstandingly. ConclusionThe composite amplification detection system constructed in this study can achieve the correct screening of saliva, semen, and vaginal secretions, overcoming the problems such as low specificity and sensitivity of marker tests and unbalanced RFU values of each marker in previous studies. The specificity and sensitivity meet the practical work requirements, and the operation is simple. It provides an analytical and identification method for body fluid stains in actual case and is applicable to the identification of the tissue origin of biological evidence at crime scenes involving sexual assault, indecent assault, and other criminal acts. In the future, more types of body fluid markers will be screened to expand the types of body fluids detected by the system, and body fluid-specific cSNP and cInDel genetic markers will be introduced to infer the sources (individuals and types) of mixed and complex stains more accurately.

To introduce and analyze guideline terminology related to clinical question formulation, evidence retrieval and appraisal, and recommendation development.

Objective:To investigate the impact and clinical outcomes of intraoperative prone-position lumbar anteroposterior (AP) fluoroscopy under anesthesia on the selection of the lowest instrumented vertebra (LIV) in the patients with adolescent idiopathic scoliosis (AIS) plus structural lumbar curves.Methods:A retrospective analysis was conducted of the clinical data of 35 patients (29 females and 6 males) with AIS who had undergone surgical posterior correction and fusion at Scoliosis Center, The Third Affiliated Hospital, Sun Yat-sen University between January 2020 and October 2023. The mean age was (17.9±5.7) years. Lenke's classification: 6 cases of type 3, 12 cases of type 4, 7 cases of type 5 and 10 cases of type 6. Preoperatively, all patients underwent standing AP and lateral radiographs of the full-length spine, left and right bending radiographs of the spine, and full-spine CT. Intraoperatively, all patients underwent prone-position lumbar AP fluoroscopy under anesthesia. The criteria for LIV selection were: (1) it should be the most cephalad vertebra touched by the central sacral vertical line (CSVL); (2) its rotation should be ≤ grade Ⅱ by the Nash-Moe classification; (3) its tilt angle should be <25°. The preoperative and postoperative LIV rotation angles were compared, and the number of lumbar fusions was compared between preoperative planning and actual surgery. Comparisons were also made between preoperation, postoperation and the final follow-up, examining Cobb angle of the major curve, Cobb angle of the minor curve, LIV inclination, coronal balance distance (CBD), sagittal vertical axis (SVA), and distance between CSVL and LIV (CSVL-LIV). The correction rates of the major curve and the minor curve, and change in LIV inclination were compared between postoperation and the final follow-up.Results:The patients were followed for (18.0±3.0) months. The LIV rotation decreased from 8.34°±4.95° preoperatively to 5.03°±2.99° postoperatively. The intraoperative fluoroscopy reduced at least one segment fusion for 57.1% (20/35) of the patients so that the number of lumbar fusions decreased significantly from 4.2±0.7 in preoperative planning to 3.6±0.8 after actual surgery ( P<0.05). The Cobb angles of the major and minor curves, LIV inclination, and CSVL-LIV at postoperation and the final follow-up were significantly lower than the preoperative values ( P<0.05), but there were no significant differences between the final follow-up and postoperation in the Cobb angle of the major cure, Cobb angle of the minor curve, or LIV inclination ( P>0.05). None of the patients required surgical revision for distal junctional complications. Conclusions:In the surgical treatment of AIS patients with structural lumbar curves, compared to the preoperative X-rays using the same criteria, intraoperative prone-position lumbar AP fluoroscopy under anesthesia can not only be a safe and effective method for LIV selection but also effectively reduce the number of lumbar fusions to preserve more lumbar mobility.

Objective:To construct a sizeable naive human Fab phage display antibody library to screen high-affinity specific antibodies in vitro. Methods:Total RNA was extracted from peripheral blood mononuclear cells (PBMCs) of 126 healthy individuals, subsequently reverse-transcribed into cDNA, and used as a template. PCR amplification was performed to obtain the V H from IgG, IgM and light chain κ, λ, separately, with the initial PCR products serving as templates for a second round of PCR. Overlap extension PCR was employed to generate fragments of the κ and λ light chains. These fragments were ligated with the phage vector pNC3, which harbors the variable region 1 of the heavy chain, to construct a recombinant phage plasmid. This plasmid was then electroporated into competent Escherichia Coli TG1 cells to establish a naive human Fab phage display antibody library. One hundred clones were randomly selected for identification and sequencing, and antibody gene polymorphisms were analyzed using the IMGT database and MAFFT software. Recombinant α-hemolysin from Staphylococcus aureus was utilized to screen Fab antibody fragments through biopanning of the antibody library, followed by random selection of phage ELISA-identified clones. The positive clones (antigen A450∶blank control A450≥2.1) were sequenced. Results:Two large naive Fab phage display antibody libraries were successfully constructed, in which the capacity of κ and λ chain antibody libraries were 1.25×10 11 and 1.54×10 11, respectively. The titers for two antibody libraries were 6.04×10 13 CFU/ml and 3.50×10 13 CFU/ml. The positive transformation insertion rates for κ and λ chain antibody libraries were 96% (96/100) and 100% (100/100), respectively. Sequence analysis revealed that all antibody sequences were unique. The amino acid sequences in the skeletal region were relatively conserved. In contrast, significant variations in the length of the complementarity determining region (CDR) were found, and the diversity of amino acid sequence of the complementary determining region was high, especially the CDR3. Analysis using the IMGT database indicated that the sequences exhibited a broad distribution across variable-diversity-joining gene families. After six rounds of panning, specific phage antibodies enrichment targeting α-hemolysin were achieved. A total of 142 monoclonal antibodies were sequenced, yielding 8 distinct Fab antibody sequences. Conclusion:This study successfully constructed two naive human Fab phage display antibody libraries with large capacity and good diversity, which can be used for screening human antibodies for serum epidemiology.

Objective To investigate the characteristics of peripheral blood in the treatment of aplastic anemia(AA)with Bushen Shengxue Method and Yiqi Yangxue Method combined with Western medicine.Methods Totally 492 AA patients who were treated in 19 centers including Xiyuan Hospital China Academy of Chinese Medical Sciences from September 2018 to March 2021 were selected,and were randomized into three groups:161 cases in the Bushen Shengxue group,164 cases in the Yiqi Yangxue group,and 167 cases in the control group.All three groups were orally administered cyclosporine and androgens.Bushen Shengxue group was given Bushen Shengxue Granules,Yiqi Yangxue group was given Yiqi Yangxue Granules,and the control group was given placebo(half dosage of Bushen Shengxue granules).The general data,overall efficacy,and peripheral blood at the 1st month,the 4th month,and 6th month after treatment were analyzed.Results The total effective rate of Bushen Shengxue group was 98.8％(159/161),which was significantly higher than that of Yiqi Yangxue group(79.9％)and the control group(61.7％),with statistical significance(P＜0.001);The total effective rate of Yiqi Yangxue group was significantly higher than that of the control group(P＜0.001).Compared with before treatment,the hemoglobin(HGB)levels of all three groups of patients significantly increased after treatment(P＜0.001,P＜0.01),and the platelet levels of Bushen Shengxue group and the control group significantly increased after treatment(P＜0.001);after treatment,the HGB levels in the three groups were ranked from high to low as the Bushen Shengxue group,Yiqi Yangxue group and the control group(P＜0.01).25％of patients had HGB levels exceeding 20％of baseline values,Bushen Shengxue group took 1 month,while Yiqi Yangxue group and control group took 4 months;25％of patients had an increase in HGB levels exceeding 50％of the baseline value,Bushen Shengxue group took 6 months,while Yiqi Yangxue group and control group took more than 6 months.At 6 months,the number of patients with HGB elevation exceeding 20％and 50％of baseline values in Bushen Shengxue group was higher than that in Yiqi Yangxue group and the control group(P＜0.05,P＜0.001).25％of patients had white blood cell elevation exceeding 50％of the baseline value,Bushen Shengxue group took 4 months,Yiqi Yangxue group took 6 months,and the control group took more than 6 months.25％of patients showed an increase in platelet levels exceeding 100％of the baseline value,Bushen Shengxue group took 4 months,while Yiqi Yangxue group and control group took 6 months;at 6 months,the number of patients in Bushen Shengxue group and Yiqi Yangxue group with platelet elevation exceeding 20％of the baseline value was significantly higher than that in the control group(P＜0.01,P＜0.05).Conclusion Bushen Shengxue method combined with Western medicine intreating AA is better than the method of Yiqi Yangxue method combined with Western medicine.In terms of improving HGB,it is reflected in shortening the recovery time and increasing the number of beneficiaries,and the dosage can affect the recovery time and the number of beneficiaries at the same time;in terms of improving white blood cell and platelet,it is reflected in shortening the recovery time,and the dosage can affect the recovery time.

Objective To evaluate the efficacy and safety of ibuprofen in treating hemodynamically significant patent ductus arteriosus(hsPDA)in preterm infants of different postnatal ages at treatment initiation.Methods Clinical records of infants with gestational age<37 weeks who received ibuprofen for hsPDA in the Department of Neonatology,Fourth Hospital of Shijiazhuang,from January 2020 to December 2023 were retrospectively reviewed.One hundred eligible infants were divided by the postnatal age at the first ibuprofen administration into three groups:group A(≤4 days),group B(5-7 days),and group C(>7 days).Clinical efficacy and safety indicators were compared among groups.Results After treatment,cure rates were 92%in group A,72%in group B,and 60%in group C,and effective rates were 8%,25%,and 33%,respectively.Differences in clinical efficacy among the three groups were statistically significant(P<0.05).No significant differences were observed among groups in the incidence of pulmonary hemorrhage,gastrointestinal bleeding,cholestasis,bronchopulmonary dysplasia,necrotizing enterocolitis,intracranial hemorrhage,or acute kidney injury(P>0.05).Conclusions For hsPDA requiring pharmacologic therapy,earlier oral ibuprofen administration yields a higher ductal closure rate and does not increase the incidence of adverse events.

Objective:To study the relationship between the levels of multiple elements in urine and the risk of arsenic poisoning in populations exposed to drinking water arsenic in Inner Mongolia Autonomous Region (Inner Mongolia).Methods:From April 2023 to January 2024, a case-control study method was used to select 128 individuals with a residence time of ≥10 years in drinking water arsenic exposed areas in Inner Mongolia as study subjects. Eighty-one individuals diagnosed with arsenic poisoning were selected as the case group, and 47 healthy individuals were selected as the control group for urine sample collection and questionnaire survey. Inductively coupled plasma mass spectrometry was employed to determine the levels of 10 elements (chromium, manganese, cobalt, nickel, copper, zinc, arsenic, molybdenum, cadmium and lead) in urine. The levels of each element in urine were divided into four groups ( Q1, Q2, Q3, and Q4 groups) based on quartiles. The associations between the levels of various elements in urine and the risk of arsenic poisoning were studied using binary logistic regression model and restricted cubic spline (RCS). Results:The age of the control group and the case group [ M ( Q1, Q3)] were 61 (53, 69) and 61 (56, 67) years old, respectively. There were 19 and 43 males, and 28 and 38 females, respectively. There was no statistically significant differences in age and and gender composition between the two groups ( Z = - 0.39, P = 0.700; χ 2 = 1.91, P = 0.167). The levels of urinary copper and cadmium of the case group were higher than those of the control group, and the differences were statistically significant ( Z = - 2.66, - 2.16, P < 0.05). The results of univariate logistic regression analysis showed that urinary copper was an influencing factor for arsenic poisoning ( P = 0.017). The results of multivariate logistic regression analysis revealed that after adjusting for covariates, urinary copper and arsenic were independent influencing factors of arsenic poisoning ( P < 0.05). Taking Q1 group as a reference, urinary copper in Q3 group [ OR (95% CI) = 8.23 (1.81, 37.39), P = 0.006] increased the risk of arsenic poisoning, while urinary arsenic in Q2, Q3, and Q4 groups [ OR (95% CI) = 0.24 (0.06, 0.92), 0.12 (0.03, 0.53), 0.15 (0.04, 0.63), P < 0.05] decreased the risk of arsenic poisoning. After adjusting for covariates, RCS did not show a dose-response relationship between urinary copper, urinary arsenic, and arsenic poisoning ( P > 0.05). Conclusion:Urinary arsenic and copper are associated with the risk of arsenic poisoning in the drinking water arsenic exposed areas of Inner Mongolia, copper exposure may contribute significantly to arsenic poisoning.

Objective:To investigate the additional value of 99Tc m-hydrazinonicotinamide (HYNIC)-Tyr3-octreotide (TOC) SPECT/CT imaging in the diagnosis and treatment of gastroenteropancreatic neuroendocrine tumors (GEP-NETs). Methods:A total of 54 patients (28 males and 26 females, age: (52.6±11.7) years) who underwent enhanced CT (MR) and 99Tc m-HYNIC-TOC SPECT/CT in People′s Hospital of Zhengzhou University between December 2017 and June 2023 were analyzed retrospectively. Surgical pathology or biopsy was the gold standard of patients′ diagnosis (primary tumors), and comprehensive evaluation based on pathology, imaging and follow-up results was used as the diagnostic criteria of lesions. McNemar χ2 test was used to compare the diagnostic efficacy of different imaging methods. Results:Pathological results showed that 43 of the 54 patients were with GEP-NETs and 11 were with non-neuroendocrine tumors (NETs). The sensitivities of enhanced CT and enhanced MR in the diagnosis of patients with GEP-NETs were 65.1%(28/43) and 60.0%(15/25) respectively, which increased to 93.0%(40/43) and 92.0%(23/25) with the addition of 99Tc m-HYNIC-TOC imaging ( χ2 values: 8.64, 4.90, P values: 0.002, 0.021). There were 22 and 15 patients showing atypical enhancement on enhanced CT and enhanced MR respectively. The sensitivities of these two methods for GEP-NETs in patients with atypical enhancement were 54.5%(12/22) and 8/15 respectively, which increased to 95.5%(21/22) and 14/15 with the addition of 99Tc m-HYNIC-TOC imaging ( χ2 values: 5.82, 4.17, P values: 0.012, 0.031). Compared with enhanced CT, the detection rates of liver and bone metastatic lesions were improved significantly from 90.8%(158/174) and 55.2%(32/58) to 96.6%(168/174) and 87.9%(51/58) with the addition of 99Tc m-HYNIC-TOC imaging ( χ2 values: 5.79, 9.82, P values: 0.013, 0.001). Compared with enhanced MR, the detection rate of bone metastases was improved significantly from 56.0%(14/25) to 88.0%(22/25) with the addition of 99Tc m-HYNIC-TOC imaging ( χ2=4.08, P=0.039). After 99Tc m-HYNIC-TOC imaging, stages were changed in 7.0%(3/43) of patients and a greater number or extent of metastases were detected in 11.6%(5/43) of patients. 99Tc m-HYNIC-TOC imaging detected additional recurrent or metastatic lesions in 40.0%(8/20) of patients during follow-up compared to enhanced CT. Conclusion:99Tc m-HYNIC-TOC imaging can provide an added value for diagnosing GEP-NETs with atypically enhanced CT(MR), and in the detection of liver metastasis and early bone metastasis, thus helping the optimization of clinical treatment strategies.