Objective:To analyze the risk factors of anxiety and depression in elderly bronchiectasis patients and establish a nomogram model.Methods:A total of 90 elderly patients with bronchiectasis who were treated in Sichuan Santai County People′s Hospital from January 2020 to January 2023 were selected as the research subjects. The incidence of anxiety and depression in patients was observed, influencing factors were analyzed by univariate and multivariate Logistic regression analysis, and a predictive risk column chart model was established.Results:In 90 elderly patients, 40 patients experienced anxiety and depression, with an incidence rate of 44.44%. Univariate and multivariate Logistic regression analysis showed that hospitalization frequency, hemoptysis, educational level, arterial partial oxygen pressure (PaO 2), severity of the condition, copper green colonization, length of hospital stay, monthly family income, and family happiness index were risk factors for anxiety and depression in elderly patients with bronchiectasis ( P<0.05). A column line prediction model for anxiety and depression in elderly patients with bronchiectasis based on 9 independent risk factors was drawn. The calibration verification result show that the predicted values of the model had a high degree of fit with the measured values. The internal validation result of bootstrap showed that the C-index was 0.724 (95% CI 0.670 -0.779). Conclusions:The occurrence of anxiety and depression in elderly patients with bronchiectasis can be influenced by various factors. The model has high predictive performance.

Objective:To develop an economical,simple,and accessible method for early identification of high-risk pregnant women with gestational diabetes mellitus(GDM),this study developed and evaluated multiple machine learning models,identified the optimal prediction model,and constructed a clinical decision support sys-tem(CDSS)based on this model.Methods:A total of 464 pregnant women who visited the Second Affiliated Hospital of Dalian Medical University from January 1,2023 to December 30,2024 were included,of which 386 were used to establish a prediction model(231 in the training set and 155 in the testing set),and the remaining 78 were used as a validation.Adopting the methods of double-point sequence correlation and chi-square test,four machine learning models were constructed after selecting feature variables:Logistic Regression,Random Forest,Support Vector Machine,and eXtreme Gradient Boosting(XGBoost).Preliminary judgment of the maximum weight mod-el,further comparison of the discriminative ability,calibration ability,and clinical practicality of each model to evalu-ate and select the optimal model,develop its CDSS,and verify the accuracy of the model.Results:①Correlation analysis identified predictors of GDM:age,pre-pregnancy body mass index(BMI),systolic/diastolic blood pres-sure,white blood cell count,hemoglobin,lymphocyte ratio,fasting plasma glucose,uric acid,direct bilirubin,chronic hypertension complicating pregnancy,and assisted reproductive technology conception.②XGBoost dominated the ensemble model and demonstrated the best performance in discrimination(AUC 0.931,95%CI 0.910-0.967),cali-bration,and clinical utility among the four models.③The CDSS achieved an accuracy of 78.2%,sensitivity of 64.7%,and specificity of 82.0%in the XGBoost model.Conclusions:The XGBoost model has the highest ability to predict GDM in the early stage.Developing its CDSS not only facilitates doctors to quickly assess GDM risk,but also is suitable for promotion to remote areas,where high-risk population screening can be achieved through re-mote data.

Objective:To analyze the risk factors of anxiety and depression in elderly bronchiectasis patients and establish a nomogram model.Methods:A total of 90 elderly patients with bronchiectasis who were treated in Sichuan Santai County People′s Hospital from January 2020 to January 2023 were selected as the research subjects. The incidence of anxiety and depression in patients was observed, influencing factors were analyzed by univariate and multivariate Logistic regression analysis, and a predictive risk column chart model was established.Results:In 90 elderly patients, 40 patients experienced anxiety and depression, with an incidence rate of 44.44%. Univariate and multivariate Logistic regression analysis showed that hospitalization frequency, hemoptysis, educational level, arterial partial oxygen pressure (PaO 2), severity of the condition, copper green colonization, length of hospital stay, monthly family income, and family happiness index were risk factors for anxiety and depression in elderly patients with bronchiectasis ( P<0.05). A column line prediction model for anxiety and depression in elderly patients with bronchiectasis based on 9 independent risk factors was drawn. The calibration verification result show that the predicted values of the model had a high degree of fit with the measured values. The internal validation result of bootstrap showed that the C-index was 0.724 (95% CI 0.670 -0.779). Conclusions:The occurrence of anxiety and depression in elderly patients with bronchiectasis can be influenced by various factors. The model has high predictive performance.

Concepts are the cornerstone of the development of disciplines. The concepts of TCM present that a superior concept contains more subordinate concepts. The superordinate concepts are often used to refer to different subordinate concepts, which can refer to both superior concepts themselves and non-specific subordinate concepts, that is, the characteristics of subordinate coverage and indefinite reference, which cause confusion in concept meaning, concept relationships, reasoning logic, and other problems. Nowadays, the TCM scholars pay little attention to this characteristic. Therefore, this article analyzed this characteristic, discussed its impact on the inheritance and development of TCM, and proposed that starting from the anchoring of concepts and entities to clarify the connotation of concepts, looking forward to provide new ideas for the definition of the concepts of TCM and the development of the discipline.

Objective:To develop an economical,simple,and accessible method for early identification of high-risk pregnant women with gestational diabetes mellitus(GDM),this study developed and evaluated multiple machine learning models,identified the optimal prediction model,and constructed a clinical decision support sys-tem(CDSS)based on this model.Methods:A total of 464 pregnant women who visited the Second Affiliated Hospital of Dalian Medical University from January 1,2023 to December 30,2024 were included,of which 386 were used to establish a prediction model(231 in the training set and 155 in the testing set),and the remaining 78 were used as a validation.Adopting the methods of double-point sequence correlation and chi-square test,four machine learning models were constructed after selecting feature variables:Logistic Regression,Random Forest,Support Vector Machine,and eXtreme Gradient Boosting(XGBoost).Preliminary judgment of the maximum weight mod-el,further comparison of the discriminative ability,calibration ability,and clinical practicality of each model to evalu-ate and select the optimal model,develop its CDSS,and verify the accuracy of the model.Results:①Correlation analysis identified predictors of GDM:age,pre-pregnancy body mass index(BMI),systolic/diastolic blood pres-sure,white blood cell count,hemoglobin,lymphocyte ratio,fasting plasma glucose,uric acid,direct bilirubin,chronic hypertension complicating pregnancy,and assisted reproductive technology conception.②XGBoost dominated the ensemble model and demonstrated the best performance in discrimination(AUC 0.931,95%CI 0.910-0.967),cali-bration,and clinical utility among the four models.③The CDSS achieved an accuracy of 78.2%,sensitivity of 64.7%,and specificity of 82.0%in the XGBoost model.Conclusions:The XGBoost model has the highest ability to predict GDM in the early stage.Developing its CDSS not only facilitates doctors to quickly assess GDM risk,but also is suitable for promotion to remote areas,where high-risk population screening can be achieved through re-mote data.

Objective To address the quality problems caused by high porosity in the preparation of dental cobalt-chrome alloy prosthetics based on selective laser melting(SLM)technology,we investigated the influence mechanism of different forming process parameters on the microstructure and properties of the materials.Moreover,the range of form-ing process parameters that can effectively reduce defects was precisely defined.Methods The effects of laser power,scanning speed,and scanning distance on the pore properties,surface roughness,and hardness of dental cobalt-chrome al-loy were investigated by adjusting the printing parame-ters in the process of SLM.Through metallographic anal-ysis,image analysis,and molten pool simulation,the pore formation mechanism was revealed,and the relation-ship between the porosity and energy density of SLM dental cobalt-chrome alloy was elucidated.Results When the linear energy density was higher than 0.18 J/mm,the po-rosity defect easily appeared at the bottom of the molten pool.When the laser energy density was lower than 0.13 J/mm,defects occurred in the gap of the molten pool due to insufficient melting of powder.In particular,when the linear energy density exceeded the threshold of 0.30 J/mm or was below 0.12 J/mm,the porosity increased significantly to more than 1%.In addition,we observed a negative correlation between free surface roughness and energy density and an inverse re-lationship between macroscopic hardness and porosity.Conclusion On the basis of the conditions of raw materials and molding equipment used in this study,the key process parameters of SLM of molding parts with porosity lower than 1%were successfully determined.Specifically,these key parameters included the line energy density,which ranged from 0.13 J/mm to 0.30 J/mm,and the scan spacing should be strictly controlled below 90 μm.

Objective : To investigate the drug resistance and pathogenicity of six clinical isolates of Klebsiella pneu- moniae (Kp) ，and to provide a basis for prevention and treatment of Kp infection． Methods : The six strains from different hospitals were isolated ，cultured ，and identified by species-specific gene khe． Their whole genome se- quences (WGS) were obtained using next-generation sequencing technology (NGS) ．Based on the WGS，the cap- sular serotypes，sequence types (ST) and drug-resistance genes of six strains were identified．The capsular sero- type genes and virulence genes were validated or identified using PCR. Broth microdilution tests were conducted to validate their drug susceptibility，and mice were challenged with Kp aerosols by MicroSprayer aerosolizer to evaluate their pathogenicity. Results : The six strains were all serotype K2 but belonged to four ST types ( ST14 ，ST65， ST700，and ST86) ，and collectively carried six virulence genes and 23 drug-resistance genes．All the six strains were resistant to ampicillin，but only one strain was multidrug-resistant．Four strains exhibited high mucoid charac- teristics．Five strains could cause mortality in mice，which were preliminary identified as high virulence strains. Conclusion For the six Kp clinical isolates from different sources，only one strain named NY 13294 is both multi- drug-resistant and highly virulent，and other four highly virulent strains are resistant to one or two types of antibiot- ics.

Objective:To predict and analyze the T/B combined epitope of EM10 protein in Echinococcus multilocularis, and identify the expressed products of the biosynthetic EM10 multi epitopes. Methods:The gene-related information of EM10 protein was obtained through NCBI GenBank public database. Bioinformatics technique was used to predict and analyze the T/B binding epitopes of EM10 protein. The prokaryotic expession recombinant plasmid pET30a-EM10 (epitope) was synthesized, and transformed into host bacteria Ecoli. BL21 (DE3). The expression of EM10 recombinant multi-epitope protein was identified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting after induced expression by isopropyl thiogalactopyranoside (IPTG). Results:The total length of EM10 gene was 1 759 bp (GenBank registration number: U05573), and its protein amino acid sequence (GenBank registration number: AAA50580.1) was 559 amino acids. By using Phyre software for homology modeling, the tertiary structure of EM10 protein was obtained, and the T/B combined epitope of EM10 protein was successfully predicted, the dominant epitope was located at 46 - 61, 133 - 183, 239 - 255 and 442 - 475 amino acid sites. The (GGGGS)n linker sequence was used to connect the epitopes to form an EM10 recombinant multi-epitope protein with a total of 206 amino acid. The size of the DNA fragment was 618 bp and the relative molecular weight of the protein was 22.66 × 10 3. The prokaryotic expession recombinant plasmid was validated by enzyme digestion, the results showed that the plasmid size was between 5 000 and 6 000 bp, which was consistent with the length of the constructed plasmid (5 854 bp). SDS-PAGE showed that the target protein was expressed in the supernatant induced by IPTG at 37 ℃ and the effect was the best. The relative molecular weight of the protein was 22.66 × 10 3 by Western blotting, which was consistent with the constructed plasmid. Conclusions:The combined epitope of EM10 T/B is successfully designed and predicted using bioinformatics technology. A prokaryotic expression recombinant plasmid is constructed, the expression of EM10 recombinant multi-epitope protein is verified through experiments, providing an experimental basis for the construction of an EM10 dominant epitope diagnostic kit.

miR-135 is a highly conserved miRNA in mammals and includes miR-135a and miR-135b.Recent studies have shown that miR-135b is a key regulatory factor in cardio-cerebrovascular diseases.It is involved in regulating the pathological process of myocardial infarction,myocardial ischemia/reperfusion injury,cardiac hypertrophy,atrial fibrillation,diabetic cardiomyopathy,atherosclerosis,pulmonary hyperten-sion,cerebral ischemia/reperfusion injury,Parkinson's disease,and Alzheimer's disease.Obviously,miR-135b is an emerging player in cardio-cerebrovascular diseases and is expected to be an important target for the treatment of cardio-cerebrovascular diseases.However,the crucial role of miR-135b in cardio-cerebrovascular diseases and its underlying mechanism of action has not been reviewed.Therefore,in this review,we aimed to comprehensively summarize the role of miR-135b and the signaling pathway mediated by miR-135b in cardio-cerebrovascular diseases.Drugs targeting miR-135b for the treatment of diseases and related patents,highlighting the importance of this target and its utility as a therapeutic target for cardio-cerebrovascular diseases,have been discussed.

Objective:To investigate the regulatory mechanism of myoepithelial cells on glandular epithelial cells during the invasive process of ductal carcinoma in situ of breast.Methods:A total of 157 patients with ductal carcinoma in situ of breast,treated at the Tianjin Medical University Cancer Hospital from May 2008 to July 2010,were randomly selected(including 63 high nuclear grade patients,51 middle nuclear grade patients,and 43 low nuclear grade patients).Immunohistochemical staining for epithelial-mesenchymal transition(EMT)-related markers(Snail and ZEB1)was performed on tumor tissue specimens from these patients to explore the correlation between tumor cell nuclear grade,EMT process,and expression status of myoepithelial cells.To further investigate the regulatory role of myoepithelial cells on glandular epithelial cells during the invasive process of ductal carcinoma in situ of breast,a co-culture model of human myoepithelial cell line Hs578Bst and adenomatous epithelial cell line MCF-7 was established using Transwell chambers.Experimental,blank control,positive control,and negative control groups were designed by combining co-cultured Hs578Bst and MCF-7 cells with exogenous TGFβ1 and TGFβ1 inhibitors.After 72 hours of culture,morphological changes,migration and proliferation capabilities of MCF-7,as well as the changes in protein and mRNA expression levels of EMT-related genes(Snail and ZEB1),were observed in each group.Results:Immunohistochemical staining results demonstrated a positive correlation between tumor nuclear atypia,EMT activation,and myoepithelial cell expression in ductal carcinoma in situ tissues.The model of ductal carcinoma in situ of breast demonstrated that myoepithelial cells Hs578Bst promoted morphological changes in glandular epithelial cells MCF-7 by stimulating TGFβ1 expression.Wound healing and cell proliferation assays revealed that myoepithelial cells Hs578Bst can enhance migration and proliferation of glandular epithelial cells MCF-7 via TGFβ1 activation.Western blot and real-time quantitative PCR confirmed that myoepithelial cells Hs578Bst can upregulate the protein and mRNA expression levels of EMT-related genes(Snail and ZEB1)in glandular epithelial cells MCF-7 by through TGFβ1 stimulation.Conclusion:Breast myoepithelial cells promote EMT in glandular epithelial cells by secreting/stimulating TGFβ1,thereby contributing to the occurrence of invasion in ductal carcinoma in situ of the breast.