Objective: To explore the influencing factors and network structure of aggressive behaviors among college students based on propensity score matching (PSM), so as to provide precise targeted interventions for the prevention and improvement of aggressive behaviors among college students. Methods: A total of 2 652 college students were selected by convenient sampling method from three colleges in Wuhan, Hubei Province in June 2023. Questionnaire surveys were carried out by using the Buss-Warren Aggression Questionnaire (BWAQ), Ruminative Responses Scale (RRS), Cognitive Emotion Regulation Questionnaire-Chinese Version (CERQ-C), Family APGAR Index (APGAR) ,Brief Fear of Negative Evaluation Scale (BFNES).By bias score matching (PSM) for 1∶1 matching, univariate and multivariate Logistic regression analysis, and network analysis were conducted on the college students. Results: College students with higher levels of ruminant thinking，non adaptive emotional regulation and fear of negative appraisal were more likely to have highly aggressive behaviors（ OR =1.14，1.18，1.06），and those with higher adaptive emotional regulation and family care index were more likely to have highly aggressive behaviors ( OR =0.88，0.82)( P < 0.01 ). Network structure was significantly different between the two groups ( M =0.27, P <0.05). The core affective factors of college students with high levels of aggressive behavior were brooding reflective pondering and symptom rumination( EI =3.50, 3.49, 3.48 )，low aggressive behavior college students core affective factors were adaptive emotion regulation growth and non adaptive emotion regulation( EI =4.37, 4.12, 4.08). Conclusion Factors affecting Chinese college students aggressive behaviors are of different characteristics on different behaviour types, and targeted interventions should be adopted to reduce aggressive behaviors of college students.

BACKGROUND:Pulsed electromagnetic fields,as an important physical therapy,are exactly effective in the treatment of osteoarthritis,but the mechanism has not been fully clarified. OBJECTIVE:To observe the effect of pulsed electromagnetic field on the degeneration of knee joint cartilage in aged rats. METHODS:Eight 6-month-old Sprague-Dawley rats were selected as the young group and were subjected to normal diet with no treatment.Sixteen 22-month-old Sprague-Dawley rats were randomly divided into old group(n=8)and pulsed electromagnetic field group(n=8).The rats in the pulsed electromagnetic field group were subjected to a pulsed electromagnetic field intervention,once a day,5 days per week for continuous 8 weeks.The rats in the old group were given no treatment.All rats were anesthetized and executed after 8 weeks for the detection of relevant indexes. RESULTS AND CONCLUSION:Compared with the young group,serum type Ⅱ collagen C-terminal peptide level was increased in the old group(P<0.05);compared with the old group,serum type Ⅱ collagen C-terminal peptide level was decreased in the pulsed electromagnetic field group(P<0.05).Micro-CT showed that the bone volume fraction,bone mineral density,and number of bone trabeculae decreased(P<0.05)and the trabecular separation increased(P<0.05)in the tibia of rats in the aged group compared with the young group;and the bone volume fraction,bone density,and number of trabeculae increased(P<0.05)and the trabecular separation decreased(P<0.05)in the tibia of rats in the pulsed electromagnetic field group compared with the aged group.The tibial plateau Safranin O-fast green staining showed that the articular cartilage structure of rats in the aged group was disorganized,and the number of chondrocytes was obviously reduced,and the tidal line could not be distinguished.The above results were improved in the pulsed electromagnetic field group.RT-qPCR and western blot assay showed that the mRNA and protein expression levels of matrix metalloproteinase 1,matrix metalloproteinase 13,P53 and P21 in the articular cartilage and subchondral bone of rats were elevated in the aged group compared with the young group(P<0.05)and decreased in the pulsed electromagnetic field group compared with the old group(P<0.05).To conclude,pulsed electromagnetic fields may improve osteoarthritis in aged rats by inhibiting chondrocyte senescence,alleviating articular cartilage degradation and inhibiting subchondral bone osteoporosis through suppressing the expression of P53/P21.

Objective:To investigate the safety of early antiplatelet therapy for non-cardioembolic mild stroke patients with thrombocytopenia.Methods:Data of acute ischemic stroke patients with baseline National Institutes of Health Stroke Scale(NIHSS)score≤3 and a platelet count<100×109/L were obtained from a multicenter register.Those who required anticoagulation or had other contraindications to antiplatelet therapy were excluded.Short-term safety outcomes were in-hospital bleeding events,while the long-term safety outcome was a 1-year all-cause death.The short-term neurological outcomes were evaluated by modified Rankin scale(mRS)score at discharge.Results:A total of 1868 non-cardioembolic mild stroke patients with thrombocytopenia were enrolled.Multivariate regression analyses showed that mono-antiplatelet therapy significantly increased the proportion of mRS score of 0-1 at discharge(OR=1.657,95%CI:1.253-2.192,P<0.01)and did not increase the risk of intracranial hemorrhage(OR=2.359,95%CI:0.301-18.503,P>0.05),compared with those without antiplatelet therapy.However,dual-antiplatelet therapy did not bring more neurological benefits(OR=0.923,95%CI:0.690-1.234,P>0.05),but increased the risk of gastrointestinal bleeding(OR= 2.837,95%CI:1.311-6.136,P<0.01)compared with those with mono-antiplatelet therapy.For patients with platelet counts≤75×109/L and>90×109/L,antiplatelet therapy significantly improved neurological functional outcomes(both P<0.05).For those with platelet counts(>75-90)×109/L,antiplatelet therapy resulted in a significant improvement of 1-year survival(P<0.05).For patients even with concurrent coagulation abnormalities,mono-antiplatelet therapy did not increase the risk of various types of bleeding(all P>0.05)but improved neurological functional outcomes(all P<0.01).There was no significant difference in the occurrence of bleeding events,1-year all-cause mortality risk,and neurological functional outcomes between aspirin and clopidogrel(all P>0.05).Conclusions:For non-cardioembolic mild stroke patients with thrombocytopenia,antiplatelet therapy remains a reasonable choice.Mono-antiplatelet therapy has the same efficiency as dual-antiplatelet therapy in neurological outcome improvement with lower risk of gastrointestinal bleeding.

Purpose/Significance To identify the influencing factors of users'willingness to use knowledge service of hospital library.Method/Process Based on the technology acceptance model,the theory of expectation confirmation model and perceived risk theory,the model and hypothesis of users'willingness to continue using knowledge service of hospital library are established.A questionnaire is de-signed and made,which is distributed to the staffs of Affiliated Tongji Hospital of Tongji Medical College,Huazhong University of Science and Technology by random sampling method.The structural equation model is used to validate and analyze the conceptual model.Result/Conclusion The findings show that expectation confirmation,perceived usefulness,perceived ease of use,and perceived interac-tivity all have positive effects on satisfaction.Of these,perceived usefulness is the most significant factor.Therefore,the key to ensure that users continue to use the library knowledge service is to enhance the usefulness of the service.

Bupleuri radix is the dried root of Bupleuri radix or narrow-leaved Bupleuri radix of the umbelliferae family,and it is the most commonly used traditional Chinese medicine,which was first published in Shennong's Classic of Materia Medica.It has a variety of pharmacological effects such as anti-inflammatory,antioxidant,hepatoprotective,antitumor,antidepressant,et al.In the modern study,the extract of Bupleuri radix mainly includes a variety of chemical components such as Bupleuri radix saponin,flavonoids and volatile oil.By reviewing the relevant literature at home and abroad,this paper summarizes the research progress on the chemical composition and pharmacological effects of Bupleuri radix,and points out the future research direction to provide a certain reference basis for the subsequent research.

Aim To investigate the effect of theaflavin on oxidized low density lipoprotein(ox-LDL)-induced foam cell formation and oxidative stress in THP-1 macrophages and its mechanism.Methods THP-1 derived macro-phages were pretreated with 50 μmol/L theaflavin and(or)10 μmol/L nuclear factor erythroid 2-related factor 2(NRF2)inhibitor ML385,then 100 mg/L ox-LDL was added to the cells for 24 h to establish the foam cell model.The effect of theaflavin on THP-1 macrophages viability was evaluated by CCK-8 assay and LDH release.The expression of inflamma-tory cytokines interleukin-6(IL-6),interleukin-1 β(IL-1β),tumor necrosis factor-α(TNF-α)were analyzed by real-time quantitative polymerase chain reaction(RT-qPCR)and Western blot.The release of inflammatory cytokines were detected by enzyme linked immunosorbent assay(ELISA).Intracellular lipid accumulation was detected by Oil red O staining,and lipid absorption was observed by DiL-labeled oxidized low density lipoprotein(DiL-ox-LDL)staining.Re-active oxygen species(ROS)level was detected by DCFH-DA probe.The expression of lipid uptake,cholesterol efflux and oxidative stress-related proteins were detected by Western blot and RT-qPCR.Results Treatment with 100 mg/L ox-LDL significantly decreased cell viability and cholesterol efflux-related protein expressions,increased lipid uptake,ac-cumulation and lipid uptake-related protein expressions,and significantly promoted inflammation and ROS level,as well as the expressions of myeloperoxidase(MPO),NADPH oxidase 2(NOX2)in THP-1 macrophages(all P＜0.05).After pretreatment with theaflavin,cell viability was increased,intracellular lipid uptake,accumulation and lipid uptake-related protein expressions were significantly reduced,cholesterol efflux-related protein expressions were significantly increased,the expression and release of IL-6,IL-1β and TNF-α were significantly decreased,ROS level was significantly decreased,and the expression of MPO and NOX2 were decreased(all P＜0.05).Pretreatment with theaflavin effectively alleviated intracellular oxidative stress by altering the expression of NRF2,heme oxygenase-1(HO-1)and Kelch-like ECH-associated protein 1(KEAP1)in NRF2 signaling pathway,and enhanced the translocation of NRF2 into the nucleus.After pretreat-ment with ML385,the expression levels of NRF2,HO-1,KEAP1 and CD36 were significantly decreased.Conclusion Theaflavin can significantly inhibit ox-LDL-induced foam cell formation,inflammation,and oxidative stress through NRF2/HO-1 signaling pathway in THP-1 macrophages.

Objective To investigate the expression level of plasma miR-34a in patients with diabetic kidney disease(DKD)and its clinical significance.Methods 189 type 2 diabetes mellitus(T2DM)patients treated in our hospital from June 2019 to June 2020 were selected and divided into normal proteinuria group(Nor,UACR<30 mg/g,n=88),microalbuminuria group(Mic,30≤UACR<300 mg/g,n=60)and macroproteinuria group(Mac,UACR≥300 mg/g,n=41)based on the levels of UACR.,During the same period,healthy individuals who underwent physical examination were selected as the normal control group(NC,n=90).Neutrophil gelatinase-associated lipocalin(NGAL),kidney injury molecule 1(KIM-1)were measured by ELISA.The expression of miR-34a in plasma was measured by reverse transcription-poly-merase chain reaction,The diagnostic value of DKD was analyzed by receiver operating characteristic(ROC)curve.Results The levels of FPG,HbA1c,Scr,BUN,NGAL,UACR,KIM-1 and miR-34a in NC,Nor,Mic and Mac groups increased sequentially(P<0.05).Pearson correlation analysis showed that miR-34a was positively correlated with FPG,HbA1c,Scr,BUN,NGAL,UACR and KIM-1(P<0.01).The area under ROC curve was 0.824,with the sensitivity 75.1%and specificity 86.7%,respectively.Conclusion Plasma miR-34a has certain diagnostic value for DKD.

Objective To construct a model for predicting the benign and malignant risk of the patients with gastric diseases using con-ventional laboratory indicators such as tumor markers,blood routine,and coagulation indicators,and validate its predictive value.Methods The medical records of patients with gastric diseases who visited the First Affiliated Hospital of Guangzhou Medical Univer-sity from January 2018 to January 2023 were analyzed retrospectively.According to the pathological results,the patients were divided into the gastric cancer(GC)group(n=134)and chronic non-atrophic gastritis(CNAG)group(n=298).Their routine test data such as serum and whole blood tests were collected.The statistical analysis was conducted using the R 4.2.3 software,and a model for pre-dicting the risk of GC was constructed and validated.Results A model for predicting the risk of GC was constructed successfully using the Logistic regression analysis,which included D-dimer,carcinoembryonic antigen(CEA),carbohydrate antigen 72-4(CA72-4)and hemoglobin(Hb).A visual nomogram was plotted as the final prediction model.The areas under the receiver operating characteristic(ROC)curve(AUCROC)of the model in the training and testing sets were 0.809(95%CI:0.754-0.864)and 0.808(95%CI:0.724-0.892),respectively.The sensitivity and specificity of the model were 58.5%and 93.3%,respectively,indicating that it had good pre-dictive ability.Conclusion The model for predicting the malignant risk of patients with gastric diseases constructed using routine tes-ting indicators has good accuracy and can effectively predict the risk of gastric disease transforming into gastric cancer.It helps to find early gastric cancer patients in clinical practice and take targeted prevention and intervention measures.

Objective:To investigate the expression of WT1 gene in children with acute lymphoblastic leukemia (ALL), and explore its clinical characteristics and correlation with the prognosis of ALL.Methods:The clinical data of 183 children with newly diagnosed ALL in Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2015 to May 2019 were retrospectively analyzed. The expression level of WT1 gene in bone marrow samples was detected by real-time fluorescence quantitative polymerase chain reaction. The children were followed up to June 2021 with a median follow-up time of 46 months (0 to 63 months).Results:Among 183 children with ALL, the WT1 gene positive was in 130 cases (71.04%), and the expression level was 1.41% (0.26%, 6.73%); WT1 gene negative was in 53 cases (28.96%). The expression levels of WT1 gene in children with T-cell lymphoblastic leukemia (T-ALL), non-hyperdiploid and middle/high-risk were significantly increased, and there were statistical differences ( P<0.05 or <0.01); however, there were no statistical differences in the expression levels of WT1 gene between children with different gender, chromosome karyotype, hepatosplenomegaly and the first diagnosis white blood cell count ( P>0.05). There were no statistical differences in complete remission rate and recurrence rate after induction chemotherapy between WT1 gene positive children and WT1 gene negative children: 87.69% (114/130) vs. 86.79% (46/53) and 16.15% (21/130) vs. 18.87% (10/53), P>0.05. By the end of follow-up, 179 children were followed up, and there was no statistical difference in survival rate between WT1 gene positive children and WT1 gene negative children: 89.68% (113/126) vs. 86.79% (46/53), P>0.05. Among the children with WT1 gene positive, relapse was in 21 cases, and there was no statistical difference in the expression level of WT1 gene after complete remission or after relapse, compared with that while the first diagnosis ( P>0.05); among non-relapse children, 96 completed the detection, the expression level of WT1 gene after complete remission was significantly lower than the first diagnosis: 0.17% (0.04%, 0.49%) vs. 2.01% (0.41%, 8.82%), and there was statistical difference ( P<0.01). Kaplan-Meier survival curve analysis result showed there was no statistical difference in survival time between WT1 gene positive children and WT1 gene negative children ( P>0.05). According to the median expression level of WT1 gene (1.41%), the children with WT1 gene positive were divided into high expression (66 cases) and low expression (64 cases), there was no statistical difference in survival time between high expression children and low expression children ( P>0.05). Conclusions:WT1 gene is commonly expressed in children with ALL and is associated with some clinical features and prognosis of the children. Decreased WT1 gene expression may result in better prognosis.

Objective:To study the effects of FLASH irradiation (FLASH-RT) and conventional irradiation (CONV-RT) on gene expression profile in mouse liver, in order to provide theoretical basis of the potential mechanism of FLASH-RT.Methods:A total of 11 C57BL/6J male mice were divided into healthy control group (Ctrl group), CONV-RT group and FLASH-RT group according to random number table method. Mouse abdomen was treated with 12 Gy CONV-RT or FLASH-RT. Then the mice were killed by neck removal, and the liver tissues were collected to extract total RNA for transcriptome sequencing (RNA-Seq) that was then analyzed by bio-informatics analysis to investigate the changes of gene expression profiles. The mRNA expression levels of Stat1, Irf9 and Rela were verified by quantitative real-time PCR assay.Results:1 762 differentially expressed genes (DEGs) were identified in group FLASH-RT vs. CONV-RT. Among them, 660 genes were up-regulated and 1 102 genes were down-regulated. 1 918 DEGs were identified in groups FLASH-RT vs. Ctrl. Among them, 728 genes were up-regulated and 1 190 genes were down-regulated. 1 569 DEGs were identified in group CONV-RT vs. Ctrl. Among them, 1 046 genes were up-regulated and 523 genes were down-regulated. According to Gene Ontology (GO) analysis, these DEGs from groups FLASH-RT vs. CONV-RT were involved in various functions including defense response to virus, other organisms in cell components, adenylyltransferase activity in molecular function activity. These DEGs from group FLASH-RT vs. Ctrl were involved in various functions including defense response to other oranisms, endoplasmic reticulum chaperone complex, double-stranded RNA binding and so on. These DEGs from group FLASH-RT vs. CONV-RT were involved in several Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways including influenza A, Herpes simplex infection and so on. These DEGs from group FLASH-RT vs. Ctrl were involved in several KEGG pathways including influenza A, NOD-like receptor signaling pathway. Stat1 was likely to be activated by FLASH radiation. The quantitative real-time PCR assay showed that FLASH-RT obviously increased the mRNA expressions of Stat1, Irf9 and Rela ( t=6.62, 2.11, 1.67, P<0.05). Conclusions:FLASH-RT and CONV-RT could alter gene expression profiles in mouse liver tissues, and these DEGs are involved in multiple radiobiological functional pathways. In comparison with CONV-RT, FLASH-RT induces a low level of liver injury, which may due to hypoxia radiation resistance.