Objective To investigate the effect of inhibiting stearoyl-CoA desaturase 1(SCD1)activity on the biological behavior of cervical cancer cells and elucidate the molecular mechanisms related to fatty acid metabolism.Methods Cancer tissues were collected from 48 patients with cervical cancer,whereas normal cervical tissues were obtained from 48 patients with uterine fibroids.Immunohisto-chemical SP staining and real-time quantitative PCR were performed to assess differences in SCD1 expression.The MTS assay was used to determine cell viability,and EdU staining was conducted to evaluate cell proliferation.Cell migration and invasion abilities were analyzed using in vitro scratch assay and Transwell chamber assay.Immunofluorescence staining was performed to detect E-cadherin and vimentin expression.Real-time quantitative PCR was used to measure the mRNA expression levels of SREBP1,ACLY,ACC,and FAS.Nile red fluorescence staining was applied to observe intracellular lipid droplet content.Results The positive expression rate of SCD1 and the relative expression level of SCD1 mRNA were significantly higher in cervical cancer tissues than in normal cervical tissues(P＜0.05).Treatment of HeLa cells with varying concentrations of MF-438 led to significant reductions in cell viability,EdU-positive cell rate,scratch closure rate,and the number of migrating and invading cells.Additionally,the fluorescence intensity of E-cadherin increased,whereas that of vimentin decreased.The relative expression levels of SREBP1,A CL Y,ACC,and FAS mRNA were downregulated,and intracellular lipid droplet content decreased in a concentration-dependent manner(P＜0.05).Conclusion Inhibition of SCD1 activity significantly reduced lipid metabolism in HeLa cells and suppressed malignant biological behaviors,including proliferation,migration,invasion,and epithelial-mesenchymal transition.

Objective To investigate the effect of long non-coding RNA,LINC00839,on the malignant biological behavior of endome-trial cancer(EC)cells via regulating miR-625-5p/MSI1 axis.Methods The expression of LINC00839,miR-625-5p,and MSI1 mRNA in EC tissues and cells was detected by real-time quantitative PCR.Ishikawa cells were selected,and bioinformatics,dual-luciferase reporter gene assay,and RNA-binding protein immunoprecipitation assay were performed to verify the targeting relationship between LINC00839,MSI1,and miR-625-5p.CCK-8,colony formation assay,flow cytometry,and Transwell assay were performed to detect cell proliferation,apoptosis,migration,and invasion.Western blotting was used to detect the expression of MSI1,Bcl-2,Bax,MMP-2,and MMP-9 protein.In vivo tumor formation experiments were conducted to verify the effect of LINC00839 on transplanted tumors in nude mice.Results The expression of LINC00839 and MSI1 mRNA in EC tissues was higher,whereas the expression of miR-625-5p was lower(P＜0.05).LINC00839 and MSI1 targeted miR-625-5p.LINC00839 knockdown or miR-625-5p overexpression suppressed malignant behavior of cells(P＜0.05).Inhibition of miR-625-5p expression or overexpression of MSI1 reversed the inhibitory effect of LINC00839 knockdown or miR-625-5p overexpression on the malignant behavior of cells(P＜0.05).LINC00839 knockdown decreased the volume and mass of transplanted tumors,increased the expression of miR-625-5p,and inhibited the expression of MSI1.Conclusion LINC00839 can target the miR-625-5p/MSI1 axis and regulate the proliferation,apoptosis,migration,and invasion of EC cells.

Objective To analyze the risk factors for moderate-to-severe coronary artery stenosis in the population of Tacheng,Xinjiang Uygur Autonomous Region,and to construct and verify a nomogram prediction model for the degree of coronary artery ste-nosis.Methods We retrospectively selected 629 patients who were hospitalized in the Cardiovascular Department of Tacheng Peo-ple's Hospital from January 2021 to June 2023.Using R language software,the sociodemographic data,disease-related data,and va-rious laboratory indicators of the 629 patients were included in the initial screening of risk factors for use in the LASSO regression analysis using a random number table method.The 629 patients were divided into a training group(n=440)and a validation group(n=189)in a 7:3 ratio.Data from the training group were used for model construction,with the degree of coronary artery stenosis as the dependent variable,and the variables selected by LASSO regression as independent variables in the logistic regression model.The validation group was used for model validation.Based on the results of the logistic regression analysis,a visual nomogram for predicting the degree of co-ronary artery stenosis was constructed using R language software.The discriminability,calibration,and clinical utility of the model were evaluated using the area under the receiver operating characteristic curve(AUC),a calibration curve,and decision curve analysis(DCA).Results Age,non-Han ethnicity,hypertension,hyperlipidemia,and a history of cerebrovascular disease were risk factors for mode-rate-to-severe coronary artery stenosis and were included in the risk prediction model.The AUC of the training group and the validation group were 0.905(95％CI:0.790-0.863)and 0.864(95％CI:0.744-0.861),respectively.The predicted values of the calibration curve were consistent with the actual values(Brier scores of the training and validation group:0.03 and 0.14,respectively).The predictive per-formance of the model was good,and the DC A results indicated that the model had net clinical benefits.Conclusion The risk prediction model for coronary artery stenosis in the population of the Tacheng area constructed in this study has good predictive performance and can provide a simple,feasible,economical,and easy-to-promote evaluation tool for medical personnel to screen patients with moderate-to-se-vere coronary artery stenosis.

Objective To analyze the expression levels of serum GINS complex 4(GINS4)and PD-1 in patients with gastric cancer before surgery and to explore the relationship between these two factors and the clinicopathological characteristics and prognosis of these patients.Methods A total of 95 patients with gastric cancer treated at the First People's Hospital of Nanyang between August 2016 and August 2018 were included in this study.The patients were followed-up for 5 years and divided into survival and death groups based on their survival at the end of the follow-up.A total of 95 healthy individuals in the same period were selected as the control group.The serum PD-1 levels before surgery were measured using an enzyme-linked immunosorbent assay(ELISA).The level of serum GINS4 mRNA before surgery was detected with real-time quantitative PCR.The relationship between serum GINS4 mRNA and PD-1 levels prior to surgery and the 5-year survival rate in the patients with gastric cancer were analyzed using the Kaplan-Meier method.Cox regression was used to analyze the factors affecting gastric cancer prognosis.Results The serum levels of GINS4 mRNA and PD-1 were significantly higher in the patients with gastric cancer than in the healty controls(P＜0.05).The serum levels of GINS4 mRNA and PD-1 in patients with poorly differentiated tissues in TNM stages Ⅲ and Ⅳ,and lymph node metastasis were significantly higher than those in patients with moderately/highly differentiated tissues,in TNM stage Ⅱ,and no lymph node metastasis(P＜0.05).The serum levels of GINS4 mRNA and PD-1,proportio of patients with TNM stages Ⅲ and Ⅳ,and the proportion of patients with lymph node metastasis in the death group were significantly higher than those in the survival group(P＜0.05).According to the results of Kaplan-Meier analysis,the 5-year survival rate of patients with gastric cancer with high serum expression levels of GINS4 mRNA and PD-1 was lower than that of patients with low expression levels of GINS4 mRNA and PD-1(P＜0.05).GINS4 mRNA and PD-1 levels were independent risk factors for death in patients with gastric cancer(P＜0.05).Conclusion The expression levels of serum GINS4 mRNA and PD-1 in patients with gastric cancer were higher than those of the controls,which were related to tissue differentiation,TNM staging,lymph node metastasis,and prognosis.

Objective To explore the strategy of percutaneous balloon compression under local anesthesia for the treatment of primary trigeminal neuralgia.Methods Sixty patients with primary trigeminal neuralgia who underwent percutaneous puncture balloon compres-sion surgery at the Third Affiliated Hospital of Jinzhou Medical University between August 2018 and August 2022 were randomly divided into three groups.Group A received 2％lidocaine(1 mL)before puncturing the foramen ovale and 0.5％lidocaine(0.5 mL)after punc-turing the skull,group B received 2％lidocaine(1 mL)before puncturing the foramen ovale and 0.25％lidocaine(0.5 mL)after entering the skull,and group C received 2％lidocaine(0.5 mL)externally and 0.25％lidocaine 0.5 mL upon intracranial injection.The pain and trigeminal-cardiac reflex as well as postoperative facial pain and numbness experienced by the patients were recorded.Results No statistically significant differences in the Visual Analogue Scale(VAS)scores among the groups were observed before surgical puncture.At the time before foramen ovale puncture,the VAS score and incidence of trigeminal-cardiac reflex in group C were significantly higher than those in groups A and B(P＜0.05).No statistically significant differences were observed among the three groups during balloon com-pression(P＞0.05).After 6 and 12 months of follow-up,no statistically significant differences were observed in the degree of facial pain and numbness among the three groups of patients(P＞0.05).Conclusion A sufficient volume(2％lidocaine,1 mL)of local anesthetic should be administered to ensure an analgesic effect and suppress adverse reflexes before puncturing the foramen ovale.During balloon compression,a low-concentration local anesthetic(0.25％lidocaine,0.5 mL)can also achieve analgesic effects and significantly suppress adverse reflexes.Notably,various local anesthesia methods have no long-term effects.

Three-dimensional(3D)printing technology,which is based on computer aided design,presents innovative solutions for clinical surgical treatments and is increasingly being utilized in clinical settings.By integrating medical-image processing software and a 3D printer with customized materials,physicians can efficiently fabricate a 3D model layer by layer,thus realizing the reconstruction of human-body models with specific objectives.These models vividly showcase the anatomical structures,fracture types,and rupture severity,thereby facilitating doctors in understanding the fracture being examined.Beyond serving as a mere demonstration tool,the physi-cal model assists doctors in designing personalized implants and selecting customized surgical guide plates and fixation screws.Surgeons can improve the surgical accuracy and efficacy by refining the surgical plan via preoperative simulation operations.This article presents a summary of the application of computer-simulation surgery in conjunction with 3D printing technology in various complex surgeries.Addi-tionally,the significant potential applications of 3D printing technology in the clinical orthopedics field are discussed.

Objective To investigate the effects of remimazolam(Rem)on postoperative cognitive function in aging model rats and elu-cidate the mechanisms underlying its regulation of the brain-derived neurotrophic factor/tyrosine kinase receptor-B(BDNF/TrkB)pathway.Methods SD rats were randomly assigned to control,model,Rem-L,Rem-M,Rem-H,and Rem-H+7,8-DHF groups,and a Morris water maze test was used to evaluate the learning and memory abilities of rats,whereas pathological changes in the hippocampal neurons of rats were assessed histologically using hematoxylin and eosin staining.In addition,we also examined the levels of inflammatory factors,including interleukin-18(IL-18),tumor necrosis factor-α(TNF-α),interleukin-1β(IL-1β)in rat serum,and those of oxidative stress indi-cators[superoxide dismutase(SOD),glutathione peroxidase(GSH-PX),and malondialdehyde(MDA)]in brain tissue,whereas Western blotting analysis was performed to determine the expression of BDNF/TrkB signaling axis-related proteins and their downstream signaling molecules.Results Hippocampal neurons of the control group rats were observed to be characterized by a tight and regular arrangement,with clear cell boundaries,cytoplasm,and nuclei.Contrastingly,the hippocampal neurons of model group rats were found to be disorderly arranged,with irregular cell morphologies and condensed nuclei being detected in some cells.In water maze tests,compared with the con-trol group rats,those in the model group were found to have a longer escape latency(P＜0.05),and in these rats,we detected significant increases in the levels of IL-1β,IL-18,TNF-α in serum,and levels of MDA,BDNF,TrkB,p-AKT/AKT,and ERK1 in brain tissues(P＜0.05),whereas there were significant reductions in the levels of SOD and GSH(P＜0.05).Furthermore,compared with rats in the model group,the hippocampal neuronal cells of rats in the Rem-L,Rem-M,and Rem-H groups tended to become gradually more orderly,along with a progressive reduction in the number of damaged cells(P＜0.05).In addition,there was a gradual shortening of the escape latency of these rats(P＜0.05),along with gradual reductions in the levels of IL-1β,IL-18,TNF-α in serum,and the levels of MDA,BDNF,and TrkB in brain tissues(P＜0.05),whereas the levels of SOD and GSH gradually increased(P＜0.05).Moreover,we established that the addition of the BDNF/TrkB activator 7,8-DHF reversed the regulatory effect of Rem on the postoperative cognitive function in aging rats(P＜0.05).Conclusion Rem can regulate the postoperative cognitive function in aging rats,the underlying mechanisms of action of which may be associated with an inhibition of the BDNF/TrkB pathway.

Objective To investigate the relationship between the expression of serum cartilage intermediate layer protein 1(Cilp1)and myocardial fibrosis(MF)in patients with type 2 diabetes mellitus(T2DM).Methods A total of 106 patients with T2DM(T2DM group)who were admitted to The First Hospital of Qinhuangdao were selected for this study,and 110 healthy individuals were entered into the control group.The serum Cilp1 and MF indexes[procollagen type Ⅲ-N-terminal peptide(P Ⅲ NP),galactose lectin-3(Gal-3),hyaluronic acid(HA),type Ⅲ procollagen(PCⅢ)]were detected and compared between the two groups.According to the degree of MF,there were 31,25,23,and 27 patients with stage 0,1,2,and 3 disease,respectively.The levels of serum Cilp1 and serum Cal-3,P Ⅲ NP,PC Ⅲ,HA were compared between patients of different stages.The Spearman method was applied to analyze the correlation between serum Cilp1 and MF staging,while the Pearson method was applied to analyze the correlation between serum Cilp1 and Gal-3,P Ⅲ NP,PC Ⅲ,HA.We also performed a multivariate logistic regression analysis of the influencing factors of MF 2 to 3 in patients with T2DM,and a receiver operating characteristic(ROC)curve analysis was applied to evaluate the diagnostic efficacy of serum Cilp1 level for MF 2 to 3 in patients with T2DM.Results The serum Cilp1 level in the T2DM group was higher than that in the control group(t=21.758,P＜0.05).Furthermore,the serum levels of Gal-3,P Ⅲ NP,PC Ⅲ,and HA in the T2DM group were higher than those in the control group(t=16.536-27.385,all P＜0.05),and the serum Cilp1 level in patients with T2DM positively correlated with MF staging,Gal-3,PⅢ NP,PC Ⅲ,and HA(r=0.724,0.555,0.501,0.588,0.655,all P＜0.05).The expression level of serum Cilp1 was found to be an influencing factor of MF 2 to 3 in patients with T2DM(P＜0.05).Furthermore,the ROC curve analysis showed that the area under the curve of serum Cilp1 for diagnosing MF stage 2 to 3 in patients with T2DM was 0.914.Conclusion Serum Cilp1 levels are elevated in patients with T2DM,and Cilp1 level closely relates to the formation of MF.This information can assist in clinical judgment of the degree of MF in patients with T2DM.

Objective To construct a prediction model for the progression of knee osteoarthritis(KOA)based on ultrasound score,magnetic resonance imaging(MRI)score,and serum levels of transforming growth factor-β1(TGF-β1)and cathepsin D(Cat D).Methods Clinical data from 270 patients with KOA in Hengshui People's hospital from December 2022 to June 2024 were retrospec-tively analyzed.The patients were randomly divided into a modeling set(n=189)and validation set(n=81)at a ratio of 7∶3.The patients in the modeling set were categorized into mild-to-moderate and severe groups based on the degree of disease progression.Mul-tivariate logistic regression analysis was used to identify factors influencing KOA progression,and a prediction model was constructed using R software.Results Multivariate logistic regression analysis showed that body mass index,knee injury history,ultrasound score,WORMS score,TGF-β1,and Cat D were significant predictors of KOA progression(P＜0.05).A nomogram-based prediction model was developed using these variables.The areas under the curve(AUC)of the nomograms for predicting disease progression in the modeling and validation sets were 0.889 and 0.860,respectively.The calibration curves showed that the predicted probability was in good agreement with the actual probability.Conclusion The prediction model developed in this study is effective in identifying patients at high-risk of KOA progression and may servce as a valuable tool for clinical assessment and decision making.

Objective To explore the effect of phloretin on the proliferation,apoptosis,and tumorigenicity of ovarian cancer cells by regu-lating the Rac1/Akt/NF-κB signaling pathway.Methods The ovarian cancer cell line SKOV3 and the human normal ovarian epithelial cell line IOSE-80 were divided into the following groups:control,low-dose phloretin,medium-dose phloretin,high-dose phloretin,PM A,and high-dose phloretin+PMA.Morphological changes were observed under a microscope.Cell viability and apoptosis were assessed using the CCK-8 assay,colony formation assay,and flow cytometry.Western blotting was performed to detect the expression of proteins related to the Rac1/Akt/NF-κB signaling pathway.Tumor-bearing nude mice were established,tumor weights were measured,and the expres-sion levels of Rae1 and Akt in tumor tissues were analyzed.Results Compared with the control group,SKOV3 cells treated with low-,medium-,and high-dose phloretin showed reduced survival rate,colony formation,and expression of p-NF-κB p65/NF-κB p65,p-Akt/Akt,and Rac 1 in a dose-dependent manner.However,PM A reversed the inhibitory effects of high-dose phloretin on the malignant progression of ovarian cancer.In vivo experiments demonstrated that phloretin significantly inhibited tumor growth and reduced Akt and Rae1 expres-sion in tumor tissues(P＜0.05).Conclusion Phloretin suppresses the malignant progression of ovarian cancer by inhibiting the Rae1/Akt/NF-κB signaling pathway.