ObjectiveThe full name of vertebroplasty is percutaneous vertebroplasty (PVP). It is a clinical technique that injects bone cement into the diseased vertebral body to achieve strengthening of the vertebra. The research on the safety and efficacy of bone cement is the basis for clinical application. In this study, vertebroplasty is used to evaluate and compare the safety and efficacy of Tecres and radiopaque bone cement in experimental pigs, and to determine the puncture method suitable for pigs and the pre-clinical evaluation method for the safety and efficacy of bone cement. MethodsTwenty-four experimental pigs (with a body weight of 60-80 kg) were randomly divided into an experimental group (Group A) and a control group (Group B). Group A was the Tecres bone cement group, and Group B was the radiopaque bone cement group, with 12 pigs in each group. Under the monitoring of a C-arm X-ray machine, the materials were implanted into the 1st lumbar vertebra (L1) and 4th lumbar vertebra (L4) of the pigs via percutaneous puncture using the unilateral pedicle approach. The animals were euthanized at 4 weeks and 26 weeks after the operation, respectively. The L4 vertebrae were taken for compressive strength testing, and the L1 vertebrae were taken for hard tissue pathological examination to observe the inflammatory response, bone necrosis, and degree of osseointegration at the implantation site. ResultsThe test results of compressive strength between groups A and B showed no significant difference at 4 weeks and 26 weeks after bone cement implantation (P > 0.05). Observation under an optical microscope (×100) revealed that at 4 weeks postoperatively, both groups A and B showed that the bone cement was surrounded by proliferative fibrous tissue, with lymphocyte infiltration around it. The bone cement was combined with bone tissue, the trabecular arrangement was disordered, and osteoblasts and a small amount of osteoid were formed. At 26 weeks postoperatively, bone cement was visible in both groups A and B. The new bone tissue was mineralized, the trabeculae were fused, the trabecular structure was regular and dense with good continuity, and no obvious inflammatory reaction was observed. ConclusionIn experimental pig vertebrae, there were no significant differences observed in the compressive strength, inflammation response, bone destruction, and integration with the bone between Tecres and non-radiopaque bone cement. Both exhibited good biocompatibility and osteogenic properties. It indicates that using vertebroplasty to evaluate the safety and efficacy of bone cement in pigs is scientifically sound.

Objective To investigate the status and distribution characteristics of human immuno-deficiency virus(HIV)infection,and the relationship between sample value/cut-off value(S/CO value)and positive test when HIV is tested reactivity by chemiluminescence immunoassay(CLIA).Methods The data of 820 HIV reactivity samples screened by Abbott CLIA in the Department of Clinical Laboratory of Affiliated Hospital of Inner Mongolia Medical University from 2017 to 2023 were selected as the research objects.SPSS22.0 software was used for statistical analysis according to different years,genders and ages.The distribution characteristics of screening reactivity and confirmed positive immunoblot test was compared.The relationship between the confirmed positive,uncertain and negative results and their S/CO values,and the distribution of corresponding bands were retrospectively analyzed.Results From 2017 to 2023,the total number of HIV positive patients decreased first decreased and then increased.The positive rate was 31.95%(262/820),the ratio of males to females was 6.7∶1,the gender difference was statistically significant(χ2=126.8,P<0.05).The ratio of men to women who responded to the screening test was 1.4∶1.The age group with the most confirmed positives for both men and women was 30～50 years old.Divided into five groups according to S/CO value,the positive rate was 0%(0/436)in 1.0≤S/CO≤5.0 group,the positive rate was 6.90%(4/58)in 5.0＜S/CO≤10.0 group,the positive rate was 25.86%(15/58)in 10.0＜S/CO≤50.0 group,the positive rate was 82.09%(110/134)in 50.0＜S/CO≤500.0 group,and the positive rate was 99.25%(133/134)in S/CO＞500.0 group,there was statistical significance in the number of confirmed positives among the five groups(χ2=816.3,P<0.05).There were 473 confirmed negative cases,more women than men,the difference was statistically significant(χ2=98.3,P<0.05),among which the results of S/CO value≤10.0 accounted for 90.49%(428/473).There were 85 uncertain cases,the gender difference was not statistically significant(χ2=1.3,P>0.05),among which the results of S/CO value≤10.0 accounted for 72.94%(62/85).The positive bands gp120 and gp160 appeared in all the results,and p55 appeared the least,accounted for 51.91%(136/262).The uncertain bands were mainly p24,followed by gp160,etc.To a certain extent,the higher the S/CO value of chemiluminescence screening test,the more bands were present when the confirmative test was positive,and the more bands were present when the confirmative test was uncertain.Conclusion The higher the S/CO value of chemiluminescence test for HIV screening test,the higher the positive rate of the confirmation test and the more positive bands,they have practical value for laboratory analysis and early clinical diagnosis.

Objective To develop a model for visualizing the risk of hemorrhagic transformation(HT)in acute ischemic stroke(AIS)patients after alteplase thrombolysis based on routine labo-ratory data.Methods A total of 252 AIS patients receiving alteplase thrombolysis in our hospital from January 2021 to January 2024 were enrolled,and then divided into HT group and non-HT group according to developing HT or not within 24 h after thrombolysis.The influencing factors for HT in AIS patients after alteplase thrombolysis were analyzed,and then a model of visualizing the risk was conducted and its predictive performance was verified.Results HT occurred in 52 out of 252 AIS patients(20.63％).The HT group had significantly higher ratio of hypertension,higher NIHSS score at admission,elevated neutrophil count,and increased D-dimer(D-D)and to-tal bilirubin(TBIL)levels,whereas lower uric acid(UA)and serum potassium levels when com-pared with the non-HT group(P＜0.05,P＜0.01).Multivariate logistic regression analysis identi-fied neutrophils,D-D,and TBIL as independent risk factors for HT(OR=2.753,95％CI:1.399-5.417,P=0.003;OR=1.987,95％CI:1.322-2.986,P=0.001;OR=2.121,95％CI:1.392-3.230,P=0.000),while UA and serum potassium were protective factors(OR=0.417,95％CI:0.202-0.860,P=0.027;OR=0.160,95％CI:0.028-0.911,P=0.039).The AUC value of the constructed model in predicting HT in AIS patients after alteplase thrombolysis was 0.920(95％CI:0.880-0.950),with a sensitivity of 96.15％and a specificity of 80.50％.Hosmer-Lemeshow test(x2=1.888,P=0.169)confirmed the model had good fit,and Bootstrap internal validation yielded a C-index of 0.921.Conclusion Neutrophils,D-D,and TBIL are risk factors,while UA and serum potassium are protective factors for HT in AIS patients following alteplase thrombolysis.Our developed model of risk visualization demonstrates robust predictive performance.

Objective To develop a model for visualizing the risk of hemorrhagic transformation(HT)in acute ischemic stroke(AIS)patients after alteplase thrombolysis based on routine labo-ratory data.Methods A total of 252 AIS patients receiving alteplase thrombolysis in our hospital from January 2021 to January 2024 were enrolled,and then divided into HT group and non-HT group according to developing HT or not within 24 h after thrombolysis.The influencing factors for HT in AIS patients after alteplase thrombolysis were analyzed,and then a model of visualizing the risk was conducted and its predictive performance was verified.Results HT occurred in 52 out of 252 AIS patients(20.63％).The HT group had significantly higher ratio of hypertension,higher NIHSS score at admission,elevated neutrophil count,and increased D-dimer(D-D)and to-tal bilirubin(TBIL)levels,whereas lower uric acid(UA)and serum potassium levels when com-pared with the non-HT group(P＜0.05,P＜0.01).Multivariate logistic regression analysis identi-fied neutrophils,D-D,and TBIL as independent risk factors for HT(OR=2.753,95％CI:1.399-5.417,P=0.003;OR=1.987,95％CI:1.322-2.986,P=0.001;OR=2.121,95％CI:1.392-3.230,P=0.000),while UA and serum potassium were protective factors(OR=0.417,95％CI:0.202-0.860,P=0.027;OR=0.160,95％CI:0.028-0.911,P=0.039).The AUC value of the constructed model in predicting HT in AIS patients after alteplase thrombolysis was 0.920(95％CI:0.880-0.950),with a sensitivity of 96.15％and a specificity of 80.50％.Hosmer-Lemeshow test(x2=1.888,P=0.169)confirmed the model had good fit,and Bootstrap internal validation yielded a C-index of 0.921.Conclusion Neutrophils,D-D,and TBIL are risk factors,while UA and serum potassium are protective factors for HT in AIS patients following alteplase thrombolysis.Our developed model of risk visualization demonstrates robust predictive performance.

Objective To investigate the status and distribution characteristics of human immuno-deficiency virus(HIV)infection,and the relationship between sample value/cut-off value(S/CO value)and positive test when HIV is tested reactivity by chemiluminescence immunoassay(CLIA).Methods The data of 820 HIV reactivity samples screened by Abbott CLIA in the Department of Clinical Laboratory of Affiliated Hospital of Inner Mongolia Medical University from 2017 to 2023 were selected as the research objects.SPSS22.0 software was used for statistical analysis according to different years,genders and ages.The distribution characteristics of screening reactivity and confirmed positive immunoblot test was compared.The relationship between the confirmed positive,uncertain and negative results and their S/CO values,and the distribution of corresponding bands were retrospectively analyzed.Results From 2017 to 2023,the total number of HIV positive patients decreased first decreased and then increased.The positive rate was 31.95%(262/820),the ratio of males to females was 6.7∶1,the gender difference was statistically significant(χ2=126.8,P<0.05).The ratio of men to women who responded to the screening test was 1.4∶1.The age group with the most confirmed positives for both men and women was 30～50 years old.Divided into five groups according to S/CO value,the positive rate was 0%(0/436)in 1.0≤S/CO≤5.0 group,the positive rate was 6.90%(4/58)in 5.0＜S/CO≤10.0 group,the positive rate was 25.86%(15/58)in 10.0＜S/CO≤50.0 group,the positive rate was 82.09%(110/134)in 50.0＜S/CO≤500.0 group,and the positive rate was 99.25%(133/134)in S/CO＞500.0 group,there was statistical significance in the number of confirmed positives among the five groups(χ2=816.3,P<0.05).There were 473 confirmed negative cases,more women than men,the difference was statistically significant(χ2=98.3,P<0.05),among which the results of S/CO value≤10.0 accounted for 90.49%(428/473).There were 85 uncertain cases,the gender difference was not statistically significant(χ2=1.3,P>0.05),among which the results of S/CO value≤10.0 accounted for 72.94%(62/85).The positive bands gp120 and gp160 appeared in all the results,and p55 appeared the least,accounted for 51.91%(136/262).The uncertain bands were mainly p24,followed by gp160,etc.To a certain extent,the higher the S/CO value of chemiluminescence screening test,the more bands were present when the confirmative test was positive,and the more bands were present when the confirmative test was uncertain.Conclusion The higher the S/CO value of chemiluminescence test for HIV screening test,the higher the positive rate of the confirmation test and the more positive bands,they have practical value for laboratory analysis and early clinical diagnosis.

BACKGROUND:Yougui Pill is a famous formula of the Chinese traditional medicine,which has good efficacy for lumbar disc herniation due to kidney yang insufficiency. OBJECTIVE:To investigate the potential targets and mechanism of action of Yougui Pill in the treatment of lumbar disc herniation by using network pharmacology and molecular docking technology,and verified by animal experiments. METHODS:(1)Network pharmacological analysis:We obtained the active ingredients and targets of Yougui Pill from TCMSP and other databases,collected genes related to lumbar disc herniation from GeneCards database,and took the intersection of the two for the topological analysis to derive the main active ingredients and core therapeutic targets.Gene ontology function analysis and Kyoto encyclopedia of genes and genomes pathway enrichment analysis were performed using R software.(2)Molecular docking:Autodock and Pymol software were utilized for the prediction of molecular binding energy of TCM active ingredients to core therapeutic targets.(3)Animal experiments:Eighteen Sprague-Dawley rats were randomly divided into a control group,a degeneration group and a Yougui Pill group,with 6 rats in each group.A rat model of intervertebral disc degeneration was prepared by fiber puncture method in the degeneration and Yougui Pill groups.At 2 weeks after modeling,Yougui Pill was given by gavage in the Yougui Pill group,once a day for 2 consecutive weeks.The level of tumor necrosis factor-α in serum was detected by the ELISA method,and morphological changes of the annulus fibrosus and nucleus pulposus cells were observed using hematoxylin-eosin staining. RESULTS AND CONCLUSION:There were 90 active ingredients and 64 targets,and the main active ingredients were found to be quercetin,kaempferol,β-carotene,soybean flavonoid,and 4'-O-methylnyasol.The core targets of Yougui Pill for the treatment of lumbar disc herniation were interleukin 6,tumor necrosis factor-α,AKT1,interleukin 1B,and vascular endothelial growth factor A.Enrichment analysis revealed that the intersecting genes might be expressed through the interleukin-17 signaling pathway,tumor necrosis factor signaling pathway,MAPK signaling pathway,PI3K-AKT signaling pathway,and other signaling pathways to improve intervertebral disc degeneration.The molecular docking test verified that quercetin,kaempferol,and β-carotene had strong binding ability to the core targets.Animal experiments showed that the level of serum tumor necrosis factor α in the degeneration group was higher than that in the control group(P<0.05),and the level of serum tumor necrosis factor α in the Yougui Pill group was lower than that in the degeneration group(P<0.05).Hematoxylin-eosin staining showed that the fibrous annulus of the intervertebral discs and the structure of the nucleus pulposus in the degeneration group were destroyed,and the number of nucleus pulposus cells was reduced;there was a tendency to reconstructing the fibrous annulus of the intervertebral discs in the Yougui Pill group,and the number of nucleus pulposus cells increased compared with the degeneration group.To conclude,Yougui Pill may treat lumbar disc herniation by improving disc degeneration through the effects of quercetin,kaempferol,beta-carotene and other key active ingredients on core targets such as tumor necrosis factor.

Objective To explore the association between mammalian sterile 20-like kinase 1(MST1)gene poly-morphism and haplotype and the risk of colorectal cancer,rectal cancer,and colon cancer in the Han population in Baotou area by case-control association study.Methods A total of 390 patients with colorectal cancer diagnosed by pathology and 413 normal physical examination population were collected,and 2 ml of peripheral blood was taken for subsequent gene genotyping.Single nucleotide polymorphisms(SNPs)of MST1 gene were screened according to the genetic polymorphism data of Chinese Han population provided by the National Center for Biotechnology In-formation-Haplotype Mapping database.Gene genotyping was performed by Taqman method.Logistic regression was used to calculate the association between each SNP and the risk of colorectal cancer,colon cancer,and rectal cancer under codominant,dominant,overdominant,and recessive genetic models.Results Four SNPs of MST1 gene were screened,namely rs8000,rs2234197,rs2267853,and rs6073629.Among them,SNP rs2234197 was associated with the risk of rectal cancer.Compared with the GG+AA genotype,the AG genotype could reduce the risk of rectal cancer,OR[95%confidence interval(CI)]=0.657(0.442-0.976).SNP rs8000 was associated with the risk of colon cancer.Compared with the TT+GT genotype,the GG genotype could reduce the risk of colon cancer[OR(95%CI)=0.425(0.182-0.992)].Conclusion MST1 gene SNP rs2234197 AG genotype and SNP rs8000 GG genotype may be protective factors for rectal cancer and colon cancer,respectively.

Objective To investigate the associations of the single nucleotide polymorphism (SNP) rs2304733 in TEA domain transcription factor 1 (TEAD1) , rs7135838 and rs1990330 in TEA domain transcription factor 4 (TEAD4) genes with the risk of non-cardia gastric carcinogenesis.Methods Enzyme linked immunosorbent assay (ELISA) was used to detect specific antibodies against Helicobacter pylori(Hp) in serum samples of the normal con-trol group.470 normal controls were divided into Hp infection negative group (n=223) and positive group (n=247) based on antibody titers.In the 450 non-cardia gastric cancer cases and 470 controls, polymerase chain reac-tion-restriction fragment length polymorphism (PCR-RFLP) was used to genotype the each SNP locus.The uncon-ditional Logistic regression method was used to evaluate the associations between each SNP locus and the risk of non-cardia gastric carcinogenesis.Results The SNPs of TEAD1 and TEAD4 were not associated with Hp infec-tion.TEAD1 rs2304733 was associated with the risk of non-cardia gastric cancer.Compared with the carriers of TT genotype, the carries of CT and CC genotypes had an increased risk of non-cardia gastric cancer (CT vs TT:OR=2.321 , 95％CI:1.690-3.188;CC vs TT:OR=5.140 , 95％CI:1.080-24.463) .TEAD4 rs1990330 was as-sociated with the risk of non-cardia gastric cancer.Compared with the carriers of GG genotype, those with GT geno-type had an increased risk of non-cardia gastric cancer (OR = 2.405 , 95％ CI: 1.480 - 3.908) .TEAD4 rs7135838 was not associated with the risk of non-cardia gastric cancer.TEAD1 rs2304733, TEAD4 rs7135838 and rs1990330 had interaction effects on the risk of non-cardia gastric cancer (P<0.05).Conclusion In Baotou Han population, TEAD1 rs2304733 and TEAD4 rs1990330 do not play a major role in Hp infection, but may play a role in the risk of non-cardia gastric cancer.TEAD4 rs7135838 may not play a major role in the risk of Hp infec-tion and non-cardia gastric cancer.TEAD1 rs2304733 and TEAD4 rs1990330 have the strongest synergistic effect on the risk of non-cardia gastric cancer, which is the best interaction model.

Objective To evaluate the quality of ultrafine powder of Spatholobus suberectus from different sources by combined HPLC fingerprint and chemical pattern recognition.Methods Separation was performed on a Amethyst C18-H column(4.6 mmx250 mm,5 pm)and the mobile phase was 0.1％phosphoric acid-acetonitrile with gradient elution.The flow rate was 1.0 mL/min and the wavelength was 260 nm.The column temperature was 30 ℃.The cluster analysis(CA),least partial squares-discriminant analysis(PLS-DA)and principal component analysis(PCA)were applied to studying the HPLC fingerprint and chemical pattern recognition.Results Thirteen common peaks were identified in ultrafine powder samples of 10 batches of Spatholobus suberectus and 3 components were identified by reference substances.The similarity of fingerprint was 0.921-0.989,indicating good similarity.The samples were divided into 3 groups by cluster analysis;principal component analysis results extracted 4 principal components.According to the composite score,the quality of ultrafine powder samples of Spatholobus suberectus from S6,S1,S2,S3 were better than others.And 4 kinds of marker compounds that caused the quality difference of ultrafine powder samples of Spatholobus suberectu were screened out through the least partial squares-discriminant analysis,which were epicatechin and peaks 1,6 and 4 respectively.Conclusion The fingerprint method is simple and reproducible,and can be used to evaluate the quality of ultrafine powder samples of Spatholobus suberectus in combination with multi-mode stoichiometric analysis.

Objective:To construct a chain mediating model based on two mediating variables of positive psychological capital and general self-efficacy, so as to explore the impact mechanism of social support on posttraumatic growth in thyroid cancer patients.Methods:From March to December 2023, convenience sampling was used to select 270 postoperative patients with thyroid cancer from the Chinese People's Liberation Army General Hospital as participants. The patients were surveyed using the General Information Questionnaire, Post Traumatic Growth Inventory, Social Support Rating Scale, Positive Psychological Questionnaire, and General Self-efficacy Scale. Spearman correlation was used to analyze the correlation between social support, positive psychological capital, general self-efficacy, and posttraumatic growth in thyroid cancer patients. SPSS PROCESS program was used to test for the chain mediating effect.Results:A total of 270 questionnaires were distributed, and 257 questionnaires were collected. After excluding questionnaires with missing items exceeding 10% and regular responses, 246 valid questionnaires were collected, with a valid response rate of 91.11% (246/270). Spearman correlation showed that there was positive correlations between social support, positive psychological capital, general self-efficacy, and posttraumatic growth in patients ( P<0.01). Mediating effect analysis showed that social support directly and positively predicted posttraumatic growth in thyroid cancer [ β=0.403, 95% CI (0.258, 0.547) ], and also affected patients' posttraumatic growth through three indirect pathways, namely social support → positive psychological capital → posttraumatic growth, with an effect value of 0.083 [95% CI (0.002, 0.173) ], accounting for 13.63% of the total effect, and social support → general self-efficacy → posttraumatic growth, with an effect value of 0.099 [95% CI (0.040, 0.166) ], accounting for 16.26% of the total effect, and social support → positive psychological capital → general self-efficacy → posttraumatic growth, with an effect value of 0.025 [95% CI (0.005, 0.051) ], accounting for 4.11% of the total effect. The total indirect effect accounted for 33.83% of the total effect. Conclusions:Social support can not only directly affect the post-traumatic growth of thyroid cancer patients, but also indirectly affect post-traumatic growth through the mediating effect of positive psychological capital and general self-efficacy.