Objective: To investigate the effects of 24 hour movement behaviors on the self confidence level of junior high school students, providing empirical evidence for optimizing physical activity intervention strategies and enhancing adolescents mental health. Methods: In December 2024, a stratified cluster random sampling method was used to select 350 students from 3 junior high schools in Wuhan City. The ActiGraph wGT3X-BT accelerometer was employed to monitor participants 24 hour movement behaviors, and the Children and Adolescents Self confidence Questionnaire was used to assess their self confidence levels. Compositional isotemporal substitution models were applied to analyze the substitution effects among different movement behaviors and their impact on the self confidence level of junior high school students. Results: Among the 24 hour movement behaviors of junior high school students, the compositional means and proportions of moderate to vigorous physical activity (MVPA), light physical activity (LPA), sedentary behavior (SB), and sleep (SP) were 33.91 min (2.35%), 151.64 min (10.53%), 761.12 min (52.86%), and 493.33 min (34.26%), respectively. There were no statistically significant differences were found across grade, parental education level, or family economic status ( t/F =0.62,1.50,-1.22, all P >0.05). Significant differences in self confidence levels were observed between male and female junior high students ( t=3.36, P <0.05). Regarding 24 hour movement behaviors, MVPA, LPA, SB and SP exhibited statistically significant differences across gender, grade, and parental education ( Z/H =-6.76-6.15, all P < 0.05 ). Results of component linear regression analysis indicated that the proportion of MVPA time positively predicted junior high school students self confidence levels ( β =4.38), while the proportion of SP time negatively predicted self confidence levels ( β = -11.20 ) (both P <0.05). Isotemporal substitution analysis revealed that replacing 15 minutes of SB and SP with MVPA increased total self confidence scores by 1.53 and 1.97 units, respectively, while the opposite substitution decreased scores by 2.48 and 2.91 units (all P <0.05). Dose response analysis revealed an asymmetric pattern in the isochronous substitution effects between MVPA and SB/SP. Conclusions The overall distribution of 24 hour movement behaviors significantly impacts self confidence level of junior high school students. Insufficient MVPA may constrain the positive development of self confidence.

BACKGROUND:Mineralized collagen is the fundamental unit of bone structure and function and a major component of the extracellular matrix.Biomimetic methods have been developed to fabricate mineralized collagen with a natural bone nanostructure.Currently,mineralized collagen has been approved by regulatory authorities and applied clinically,playing a positive role in bone defect repair.OBJECTIVE:To present the integration strategies of bioactive factors with mineralized collagen,summarize schemes to enhance the osteogenic potential of mineralized collagen,emphasize the multifunctional coordination applications of mineralized collagen,and finally discuss current research focuses and future trends.METHODS:The authors searched for relevant literature in databases such as PubMed,Web of Science,Medline,WanFang,and CNKI,from 2009 to 2023,using keywords"mineralized collagen,biomimetic,functionalization,bioactive factors,osteogenesis,multi-functional coordination,bone tissue repair"in English and"mineralized collagen,biomimetic,functionalization"in Chinese.Out of 375 initially identified articles,57 were included for review after screening.RESULTS AND CONCLUSION:(1)Mineralized collagen,with its porous structure and large surface area,containing nano-hydroxyapatite,makes it an effective carrier for cells,various growth factors,and drugs.(2)Single or multiple bioactive factors can be efficiently and orderly released through different loading methods or combinations,achieving the multifunctionalization of mineralized collagen.The impact of physicochemical conditions on the bioactivity of factors and their effects on the degradability,hydroxylapatite crystal morphology,nanostructure,and content of mineralized collagen should be considered.Moreover,calcium ions in mineralized collagen can be substituted with various inorganic non-metal ions,enhancing its osteogenic,angiogenic,immunomodulatory,and anti-infective properties.(3)Ultimately,during in situ bone regeneration,functionalized mineralized collagen serves as a scaffold material,providing structural support for bone defects,and as a drug delivery system,continuously delivering various bioactive factors locally,playing roles in anti-infection,immunomodulation,promoting angiogenesis and osteogenesis,and repairing various complex bone defects.

BACKGROUND:Mineralized collagen is the fundamental unit of bone structure and function and a major component of the extracellular matrix.Biomimetic methods have been developed to fabricate mineralized collagen with a natural bone nanostructure.Currently,mineralized collagen has been approved by regulatory authorities and applied clinically,playing a positive role in bone defect repair.OBJECTIVE:To present the integration strategies of bioactive factors with mineralized collagen,summarize schemes to enhance the osteogenic potential of mineralized collagen,emphasize the multifunctional coordination applications of mineralized collagen,and finally discuss current research focuses and future trends.METHODS:The authors searched for relevant literature in databases such as PubMed,Web of Science,Medline,WanFang,and CNKI,from 2009 to 2023,using keywords"mineralized collagen,biomimetic,functionalization,bioactive factors,osteogenesis,multi-functional coordination,bone tissue repair"in English and"mineralized collagen,biomimetic,functionalization"in Chinese.Out of 375 initially identified articles,57 were included for review after screening.RESULTS AND CONCLUSION:(1)Mineralized collagen,with its porous structure and large surface area,containing nano-hydroxyapatite,makes it an effective carrier for cells,various growth factors,and drugs.(2)Single or multiple bioactive factors can be efficiently and orderly released through different loading methods or combinations,achieving the multifunctionalization of mineralized collagen.The impact of physicochemical conditions on the bioactivity of factors and their effects on the degradability,hydroxylapatite crystal morphology,nanostructure,and content of mineralized collagen should be considered.Moreover,calcium ions in mineralized collagen can be substituted with various inorganic non-metal ions,enhancing its osteogenic,angiogenic,immunomodulatory,and anti-infective properties.(3)Ultimately,during in situ bone regeneration,functionalized mineralized collagen serves as a scaffold material,providing structural support for bone defects,and as a drug delivery system,continuously delivering various bioactive factors locally,playing roles in anti-infection,immunomodulation,promoting angiogenesis and osteogenesis,and repairing various complex bone defects.

OBJECTIVE To compare the efficacy and safety of vedolizumab （VDZ） versus infliximab （IFX） in biologic-naive（Bio-naive） patients with moderate-to-severe active ulcerative colitis （UC）， and to analyze the factors influencing efficacy. METHODS Clinical data were retrospectively collected from Bio-naive patients with moderate-to-severe active UC who received treatment in the Department of Gastroenterology at Shanxi Provincial People’s Hospital from June 2023 to June 2024. Based on the type of biologic agent administered， the patients were divided into the IFX group （41 cases） and the VDZ group （30 cases）. Patients in the two groups received IFX （5 mg/kg） or VDZ （300 mg） for induction and maintenance of remission therapy. The two groups were compared regarding modified Mayo score， serological indicators （hemoglobin， albumin， platelet count， erythrocyte sedimentation rate， C-reactive protein）， combined medication， efficacy-related indexes （clinical response rate/remission rate， and endoscopic response rate/remission rate）， and the occurrence of adverse drug reactions （ADR）. Based on Logistic regression model， univariate and multivariate analyses were conducted to identify potential factors influencing clinical remission at week 14 and endoscopic remission at week 38. RESULTS There were no statistically significant differences in clinical response rate/remission rate， or endoscopic response rate/remission rate between the two groups at weeks 14 and 38 （ P ＞0.05）. However， at week 14 of treatment， the proportion of patients using concomitant corticosteroids in VDZ group was 26.67%， significantly higher than the 7.50% in IFX group （ P ＜0.05）. There was no statistical significance in the overall incidence of ADR between the two groups （ P ＞0.05）； all ADRs in the IFX group were grade 3 and led to treatment discontinuation （6 cases）， whereas ADR in the VDZ group was grade 2 and did not interrupt therapy （1 case）. Univariate and multivariate regression analyses revealed that disease type （relapsing） was significantly associated with clinical remission at week 14 of treatment， and a history of smoking was significantly associated with endoscopic remission at week 38 of treatment （the odds ratios were 0.08 for both， with 95% confidence intervals of 0.01-0.77 and 0.01-0.91 respectively， P ＜0.05）. CONCLUSIONS For Bio-naive patients with moderate-to-severe active UC， VDZ and IFX demonstrate comparable efficacy in inducing and maintaining clinical remission and promoting mucosal healing， as well as overall safety. Although IFX can achieve faster control of inflammation in the early stage of the disease， it causes more severe ADR. Disease type （relapsing） and smoking history are identified as independent negative predictors for short-term clinical remission and long-term endoscopic remission， respectively.

Objective: To assess the status of sexual behaviors, HIV/AIDS knowledge awareness, and novel synthetic drug use among school attending young students in Guangdong Province, so as to provide evidence base for formulating targeted intervention strategies. Methods: From September to December 2024, a convenience sampling method was employed to conduct an anonymous online survey among 41 119 students from 20 higher education institutions and vocational colleges in Guangdong Province. Chi square test was utilized for rate comparisons and univariate analysis, and a multivariate Logistic regression model was applied to analyze factors associated with novel synthetic drug use. Results: The self reported rate of sexual behavior was 5.2%. Among sexually active students, the rates of unprotected sexual intercourse, having temporary sexual partners, and having commercial sexual partners were 32.4%, 34.5%, and 26.3%, respectively. The awareness rate of HIV related knowledge was 75.7%. The overall use rate of novel psychoactive substances(NPS) was 1.0%, and among sexually active students it was 6.5%. Multivariate Logistic regression analysis showed that students with sexual experience ( OR =4.15) and those with HIV testing history ( OR =9.38) had higher risks of NPS use; among sexually active students, those with unprotected sexual intercourse ( OR =6.83) and those with commercial sexual partners ( OR = 4.68 ) had higher risks of NPS use (all P <0.05). Conclusions The HIV/AIDS knowledge level among surveyed students needs further improvement, and high risk sexual behaviors are cross linked with novel synthetic drug use. It is recommended to carry out integrated health education for all students and implement comprehensive targeted interventions for sexually active students.

OBJECTIVE: To explore the role of CDGSH iron-sulfur domain 2 (CISD2) in patients with sepsis-related myocardial injury (SMI) and its predictive value for 28-day prognosis and myocardial damage through clinical studies and cell experiments. METHODS: A retrospective study was conducted. Adult patients diagnosed with sepsis admitted to the critical care medicine of Third Affiliated Hospital of Qiqihar Medical University from January 2023 to January 2024 were enrolled. The clinical data, laboratory indicators, expression level of CISD2 mRNA in peripheral blood mononuclear cells (PBMC) 24 hours after admission, and 28 days prognosis were collected. Patients were divided into SMI group [left ventricular ejection fraction (LVEF) < 0.50 or LVEF decreased by ≥ 10% from baseline] and sepsis non-myocardial injury group based on LVEF. The expression levels of CISD2 mRNA were compared between the two groups, and the correlation between CISD2 and myocardial injury was analyzed. Patients were divided into the low-expression group (CISD2 mRNA < 0.5 copy/μL) and the high-expression group (CISD2 mRNA ≥ 0.5 copy/μL) based on the expression of CISD2 mRNA, and into the survival group and the death group based on the prognosis at 28 days. The clinical characteristics were analyzed between the groups. Multivariate Logistic regression was used to analyze the independent predictors of 28-day mortality in patients with sepsis. The predictive value of CISD2 for myocardial damage and 28-day prognosis in patients with sepsis were evaluated by using the receiver operator characteristic curve (ROC curve). In addition, in vitro experiments using human AC16 cardiomyocytes was conducted. The cells were divided into control group, lipopolysaccharide (LPS) group, the LPS+transfection group with overexpression of CISD2 plasmid (LPS+p-CISD2 group), and the LPS + transfection group with negative control plasmid (LPS+p-NC group). The mRNA expression of CISD2 in cells were detected by real-time quantitative polymerase chain reaction (RT-qPCR), the protein expression of CISD2 in cells were detected by Western blotting, and the cell viability was determined by cell counting kit-8 (CCK-8). RESULTS: A total of 85 sepsis patients were included, with 32 developing myocardial injury and 53 without myocardial injury. There were 40 cases of low expression of CISD2 and 45 cases of high expression of CISD2. At 28 days, 60 cases survived and 25 cases died. The mRNA expression of CISD2 in the SMI group was significantly lower than that in the sepsis non-myocardial injury group (copy/μL: 0.41±0.09 vs. 0.92±0.13, P < 0.05). CISD2 was significantly correlated with myocardial injury in patients with sepsis (r = 0.729, P < 0.05). The proportion of LVEF < 0.50 (67.50% vs. 11.11%), sequential organ failure score (SOFA: 15.63±2.15 vs. 11.12±1.52), and acute physiology and chronic health evaluation II (APACHEII: 29.49±3.51 vs. 22.41±2.61) in the CISD2 low-expression group were significantly higher than those in the CISD2 high-expression group (all P < 0.05), while there were no significantly differences in other indicators. The Kaplan-Meier survival curve showed that the 28-day survival time of sepsis patients with in the CISD2 low-expression group was significantly shorter than that in the CISD2 high-expression group (Log-rank test: χ ² = 5.601, P < 0.05). The proportion of CISD2 low-expression and the proportion of LVEF < 0.50 in the survival group were both higher than those in the death group (80.00% vs. 33.33%, 64.00% vs. 26.67%, both P < 0.05), while there were no significantly differences in other indicators. Multivariate Logistic regression analysis showed that CIDS2 and LVEF were independent predictive factors for 28-day mortality in patients with sepsis [CIDS2: odds ratio (OR) = 3.400, 95% confidence interval (95%CI) was 1.026-11.264, P = 0.045; LVEF: OR = 2.905, 95%CI was 1.029-8.199, P = 0.044]. ROC curve analysis showed that when CISD2 was expressed at a low level, patients with sepsis were at high risk of death within 28 days and myocardial injury. The sensitivity of CISD2 in predicting the 28-day mortality of patients with sepsis was 80.00%, and the specificity was 66.67%, and the area under the curve (AUC) was 0.733 (95%CI was 0.626-0.823). The sensitivity of CISD2 in predicting myocardial injury in patients with sepsis was 83.87%, the specificity was 74.07%, and the AUC was 0.790 (95%CI was 0.688-0.871). In addition, compared with the control group, the mRNA and protein expressions of CISD2 as well as the cell activity in the LPS group were significantly decreased. The mRNA and protein expressions of CISD2 and the activity of cardiomyocytes transfected with p-CISD2 were significantly increased. CONCLUSIONS CISD2 plays a protective role in sepsis-associated myocardial injury and has good predictive value for 28-day prognosis and myocardial injury.
Humans ; Sepsis/metabolism* ; Prognosis ; Retrospective Studies ; Male ; Female ; Middle Aged ; RNA, Messenger/genetics* ; Aged ; Myocardium/metabolism*

Objective To explore the related functional mechanism of Xihuang pill containing serum inter-vention in breast cancer cells based on microRNA(miR)21-5p targeting FAM13A gene.Methods Bioinfor-matics websites was used to predict potential miRNAs of FAM13A gene,double luciferase reporter experi-ments were conducted to verify the binding site relationship between FAM13A and predicted miRNAs.The Xihuang pill containing serum was prepared,and human breast cancer MDA-MB-231 cells were cultured.The proliferation of MDA-MB-231 cells was interfered by the Xihuang pill containing serum with different dilution ratios by CCK-8 test,and the best dilution ratio concentration of Xihuang pill containing serum to inhibit the proliferation of breast cancer cells was selected.Real time fluorescence quantitative PCR(RT-qPCR)was ap-plied to detect the relative expression levels of FAM13A mRNA,as well as the relative expression levels of miR21-5p,in MDA-MB-231 cells after intervention with Xihuang pill containing serum.Cell proliferation(Edu)assay and cell apoptosis detection(TUNEL)assay were used to detect the effects of Xihuang pill con-taining serum intervention on cell proliferation and apoptosis function in MDA-MB-231 cells.The siRNA lentiviral transfection on MDA-MB-231 cells was performed to knock down the FAM13A gene,and Edu assay and TUNEL assay were used to detect changes in proliferation and apoptosis ability of MDA-MB-231 cells af-ter lentiviral transfection.The expression level of miR21-5p in MDA-MB-231 cells after FAM13A gene knock-out was detected by RT-qPCR technology.Results Target Scan online website predicted the potential miR-21-5p binding sequence in the 3'UTR of FAM13A mRNA,and dual luciferase reporter assay confirmed the in-teraction between miR-21-5p and FAM13A.After intervention of MDA-MB-231 cells with Xihuang pill drug containing serum,RT-qPCR results showed that compared with the control group(NC group),the Xihuang pill drug containing serum group(XHW group)downregulated the expression levels of FAM13A mRNA(P＜0.05),and upregulated the expression level of miR21-5p(P＜0.05).Compared with the NC group,the XWH group showed reduced cell proliferation ability and promoted cell apoptosis.(P＜0.05).After silencing the FAM13A gene in MDA-MB-231 cells,compared with the control group(shCtrl group),the shFAM13A group showed a significant decrease in cell proliferation ability and promoted cell apoptosis.The RT-qPCR re-sults showed that compared with the shCtrl group,the expression level of miR21-5p was significantly upregu-lated in the shFAM13A group(P＜0.05).Conclusion Xihuang pill could participate in the anti-tumor treat-ment of breast cancer by regulating miR21-5p to affect the expression level of FAM13A gene.

Breast cancer is one of the most common malignant tumors among women worldwide, with an increasing incidence rate year by year, making it a significant public health concern. With the continuous advancement of tumor biology research, N 6-methyladenosine (m 6A) modification, as an important form of RNA modification, has attracted growing attention. The m 6A modification, the most prevalent RNA modification in eukaryotes, occurs in almost all types of RNA and plays a critical role in the occurrence, progression, and metastasis of breast cancer. It influences cell proliferation, apoptosis, and alterations in the tumor microenvironment, though the specific mechanisms underlying these effects require further in-depth investigation. Moreover, the specific patterns of m 6A modification demonstrate its potential as a novel biomarker for breast cancer, which could provide new directions for early diagnosis and prognosis evaluation.

Objective:To investigate differentially expressed lipid molecules and their associated metabolic pathways in lung tissue using lipidomic analysis in a rat model of acute lung injury (ALI).Methods:An ALI rat model was established via intratracheal instillation of lipopolysaccharide (LPS). Twenty rats were randomly allocated into an ALI group and a control group ( n = 10 per group). The left lung was subjected to histopathological evaluation, while the right lung underwent untargeted lipidomics analysis. Ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was employed for lipid profiling. Principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA) were performed to assess intergroup differences and determine variable importance in projection (VIP) scores. Differential lipids were screened based on VIP and fold change.Lipid identification and metabolic pathway analysis were conducted using MetaboAnalyst 5.0 and the Kyoto Encyclopedia of Genes and Genomes (KEGG) database. Results:Among 1 022 detected lipid molecules, 47 were differentially expressed (VIP > 1, FC > 2.0 or < 0.5, P< 0.05). Subsequent analysis identified 12 structurally annotated lipids ( P < 0.05), predominantly enriched in glycerophospholipid metabolism, linoleic acid metabolism, and α-linolenic acid metabolism pathways. Notably, phosphatidylcholines (PCs) and lysophosphatidylcholines (LPCs) exhibited significant alterations in the ALI group. Conclusions:The ALI model demonstrated substantial dysregulation of lipid metabolism, particularly involving PCs and LPCs, with prominent perturbations in glycerophospholipid metabolism. This provides a scienctific basis for indepth research on the pathogenesis mechanism of ALI/acute respiratory distress syndrome (ARDS) .