Objective: To explore the impact of adverse childhood experiences (ACEs) on health risk behaviors (HRBs) among college students and the mediating role of psychological symptoms, so as to provide a basis for developing intervention strategies. Methods: From March to April 2023, a convenience cluster sample of 1 801 students from 12 universities in Nanning, Liuzhou, Guilin, Wuzhou of Guangxi completed an online survey. A self designed questionnaire, Adverse Childhood Experiences-International Questionnaire (ACE-IQ) and Symptom Checklist-90 (SCL-90) were used for evaluation tools. Binary Logistic regression, structural equation modeling (SEM) and Bootstrap methods were used to analyze the associations and mediating effects. Results: Overall, 71.2% of college students experienced at least one type of ACE, with emotional neglect (40.3%) and emotional abuse ( 25.2 %) having the highest detection rates. The top three HRBs were unhealthy diet (77.8%), physical inactivity (54.1%), and smoking/alcohol use (18.5%). Logistic regression showed that poor family functioning, abuse, and extra familial violence were each associated with an increased risk of smoking/alcohol use ( OR =1.14, 1.11, 1.18) and deliberate self harm ( OR =1.26, 1.19,1.30) (all P <0.05). Experience of abuse increased the risk of high risk sexual behavior and family dysfunction increaded the risk of physical inactivity, respectively ( OR = 1.07 , 1.04, both P <0.05). Mediation analysis revealed that anxiety ( β =0.20) and depression ( β = 0.09 ) partially mediated the pathway from poor family functioning to deliberate self harm; paranoia ( β =0.02) partially mediated the pathway from abuse to high risk sexual behavior; and obsessive-compulsive symptoms ( β =0.26) and depression ( β =0.10) partially mediated the pathway from extra familial violence to deliberate self harm (all P <0.05). Conclusion Psychological symptoms play a mediating role in the association between ACEs and HRBs, and mental health interventions may reduce the risk of HRBs among college students.

Functional constipation （FC） is a clinically common functional bowel disorder characterized by a protracted course and associations with various chronic disorders and psychological abnormalities. Although not life-threatening， FC significantly impairs patients' quality of life. FC subtypes include slow-transit constipation （STC）， defecatory disorder （DD）， and normal-transit constipation （NTC）. The pathological mechanisms underlying FC have not been fully elucidated， and overall clinical efficacy remains unsatisfactory. Animal models of FC serve as essential tools for the study of disease mechanisms and the development of novel therapeutics. This article systematically reviews the current state of research on the animal models of FC and identifies that rodents， particularly rats and mice， are the most commonly used species. Dogs and pigs are also employed in complex intervention studies due to their physiological similarities to humans， though their use is limited by housing challenges and ethical considerations. Induction methods vary across different FC subtypes. STC models are primarily established with chemical agents such as loperamide or compound diphenoxylate. DD modeling often involves low-fiber diets combined with methylene blue injection or rectal narrowing. NTC modeling mainly relies on low-fiber dietary interventions. In addition， disease-syndrome combination models based on traditional Chinese medicine （TCM） theory have been developed， encompassing excess patterns such as heat accumulation， cold accumulation， and Qi stagnation， as well as deficiency patterns including Qi deficiency， blood deficiency， Yin deficiency， and Yang deficiency. These are achieved through an approach of disease model + syndrome induction， enabling the integration of mechanisms from both Western and TCM perspectives. Models are evaluated from two aspects： disease and syndrome manifestations （e.g.， colonic transit， secretory function， and TCM syndrome indicators such as mental state and body weight） and disease mechanisms （e.g.， enteric nervous system， interstitial cells of Cajal， smooth muscle cells， gut microbiota， and metabolites）. However， current research still faces challenges such as poor consistency in some models， non-specific interference in mechanism interpretation， insufficient studies on NTC， and lack of TCM tongue and pulse diagnosis in evaluation. Future efforts should focus on optimizing model stability and specificity to provide a more reliable experimental basis for investigating the pathological mechanisms of FC and developing therapeutic agents.

ObjectiveTo explore the effects of serine hydroxymethyltransferase 1 （SHMT1） rs1979277 polymorphisms on pharmacokinetic characteristics and clinical prognosis of methotrexate （MTX） in children with acute lymphoblastic leukemia （ALL）. MethodsMatrix-assisted laser desorption/ionization time of flight mass spectrometry was used for SHMT1 rs1979277 genotyping in children with ALL . Clinical data including serum MTX concentrations， incidences of adverse events， and ALL relapse after chemotherapy with MTX were collected. The associations of SHMT1 rs1979277 G>A genotypes with dose-adjusted serum concentrations （C/D ratios）， adverse events of MTX， and relapse were analyzed. The associations between rs1979277 genotypes and SHMT1 expression were explored based on Bioinformatics methods. ResultsAmong the 146 children with ALL included， the rs1979277 GG homozygous genotype accounted for 85.62% （125/146）， while the GA heterozygous genotype accounted for 14.38% （21/146）. The frequency of the G allele was 92.81% （271/292）， while the A allele was only 7.19% （21/292）. Children with the GG homozygous genotype had higher median C/D ratios of MTX in 24 h ［12.06 （μmol·m²）/（L·g）］ and higher relapse rates （12.80%） than those in GA heterozygous genotype carriers ［10.96 （μmol·m²）/（L·g）， and 9.52%， respectively］. However， none of the above differences were statistically significant （all P>0.05）. The incidences of respiratory （19.05%） and liver disorders （33.33%） in children with the GA heterozygous genotype were significantly higher than those in GG homozygous genotype carriers （4.00% and 12.00%， respectively， P<0.05）. There were no statistically significant differences in the incidences of other adverse events. Bioinformatics analysis showed that the rs1979277 A allele was significantly associated with higher SHMT1 expression in multiple tissues， such as the tibial artery， pancreas， and adrenal gland （P<0.05）. ConclusionSHMT1 rs1979277 GA genotype may be a risk factor for respiratory and liver disorders in ALL children treated with MTX.

Objective: To evaluate the efficacy and safety of ruxolitinib combined with low-dose hormone for patients with acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods: Thirty patients with aGVHD after allo-HSCT admitted to the Department of Hematology of the General Hospital of Western Theater Command from November 2021 to November 2024 were retrospectively analyzed. All patients were treated with low-dose hormone (methylprednisolone 0.3-1 mg kg -d ) combined with ruxolitinib 5-10 mg d . The efficacy and adverse reactions were observed during the follow-up period to analyze the survival outcomes of the patients. Results: A total of 30 patients with aGVHD after allo-HSCT were included in this study, consisting of 15 (50%) males and 15 (50%) females with a median age of 34 year-old (ranging from 14 to 62). Classification by disease type: there were 18 cases of acute myeloid leukemia, 4 cases of acute lymphoblastic leukemia, 4 cases of aplastic anemia, and 4 cases of myelodysplastic syndrome. Classification by aGVHD severity: there were 27 cases (90%) of Ⅱ-Ⅳ degree aGVHD and 11 cases (36.7%) of Ⅲ-Ⅳ degree aGVHD. Ruxolitinib in combination with low-dose glucocorticoid treatment yield responses in 28 (93.3%) patients, of which 27 (90%) achieved complete remission (CR), while 1 (3.3%) showed partial remission (PR). One patient (3.3%) had no response (NR), and 1 patient (3.3%) exhibited progressed disease (PD). Overall survival (OS) at 1 year of transplantation was 73.9% (95%CI 49.5% to 87.7%), progression-free survival (PFS) was 93.3% (95%CI 75.9% to 98.3%), non-relapse mortality (NRM) was 20.6% (95%CI 7.9% to 47.4%), and median survival time was 27.6 months. Conclusion: Ruxolitinib combined with low-dose hormones is safe and effective in the treatment of aGVHD after allo-HSCT.

Stroke is characterized by a high disability rate. After stroke, patients will have different degrees of limb dysfunction, which seriously affects their quality of life. In recent years, fully immersive virtual technology has been gradually applied at home and abroad to promote limb function rehabilitation of stroke patients. This paper reviews the technical components, application forms, application effects, prospects and challenges of fully immersive virtual reality technology in limb function rehabilitation of stroke patients, in order to provide theoretical basis for the subsequent application of fully immersive virtual reality technology to improve the level of limb function rehabilitation of stroke patients.

Objective:To investigate the risk factors affecting live birth outcomes in patients with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization/intracytoplasmic sperm injection and embryo transfer (IVF/ICSI-ET) and to establish a predictive model. Methods:A retrospective case-control study was conducted by collecting data from 563 patients with PCOS who were treated at the Reproductive Medicine Department of the General Hospital of Northern Theater Command between June 2018 and January 2023. Patients were divided into live birth ( n=341) and non-live birth ( n=222) groups based on pregnancy outcomes. Univariate and multivariate logistic regression analyses were performed to identify risk factors, followed by construction of a nomogram prediction model based on values with P<0.05 in multiple regression analysis. The model's predictive performance was evaluated using receiver operating characteristic curve analysis, calibration curves, Hosmer-Lemeshow (H-L) goodness-of-fit test, and decision curve analysis. Results:1) Univariate analysis revealed that there were statistically significant differences in age, body mass index (BMI), insulin level, the number of high-quality embryos, and the rate of high-quality embryos between the two groups (all P<0.05). 2) After adjusting for confounding factors, the results of multivariate logistic regression analysis on variables associated with live birth outcomes in the live birth group showed that: age ( OR=1.151, 95% CI: 1.061-1.249, P=0.001), body mass index ( OR=1.141, 95% CI: 1.074-1.214, P<0.001), and insulin level ( OR=1.206, 95% CI: 1.149-1.266, P<0.001) were independent risk factors for live birth outcome; top-quality embryo rate ( OR=0.101, 95% CI: 0.033-0.310, P<0.001) was a protective factor; and the number of top-quality embryos ( OR=0.949, 95% CI: 0.887-1.014, P=0.104) showed no statistically significant association with live birth outcome. 3) A predictive model for the live-birth outcome after IVF/ICSI-ET in PCOS patients was established. The area under the curve (AUC) values for predicting the live-birth outcome based on female age, BMI, the rate of high-quality embryos, and insulin level were 0.581, 0.747, 0.725, and 0.813, respectively. The combined model of these four factors had an AUC value of 0.846 for predicting the live-birth outcome. 4) A nomogram predictive model for the live-birth outcome after IVF/ICSI-ET in PCOS patients was established. The slope of the model's calibration curve was close to 1, and the H-L test yielded a P>0.05, indicating a high consistency between predicted and actual events. The decision analysis curve confirmed the clinical practicality of the predictive model. Conclusion:Age, BMI and insulin level are independent risk factors for live birth outcomes in PCOS patients undergoing IVF/ICSI-ET, while the high-quality embryo rate serves as a protective factor. The established predictive model demonstrates excellent performance and may facilitate clinical decision-making.

Objective:To investigate the risk factors affecting live birth outcomes in patients with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization/intracytoplasmic sperm injection and embryo transfer (IVF/ICSI-ET) and to establish a predictive model. Methods:A retrospective case-control study was conducted by collecting data from 563 patients with PCOS who were treated at the Reproductive Medicine Department of the General Hospital of Northern Theater Command between June 2018 and January 2023. Patients were divided into live birth ( n=341) and non-live birth ( n=222) groups based on pregnancy outcomes. Univariate and multivariate logistic regression analyses were performed to identify risk factors, followed by construction of a nomogram prediction model based on values with P<0.05 in multiple regression analysis. The model's predictive performance was evaluated using receiver operating characteristic curve analysis, calibration curves, Hosmer-Lemeshow (H-L) goodness-of-fit test, and decision curve analysis. Results:1) Univariate analysis revealed that there were statistically significant differences in age, body mass index (BMI), insulin level, the number of high-quality embryos, and the rate of high-quality embryos between the two groups (all P<0.05). 2) After adjusting for confounding factors, the results of multivariate logistic regression analysis on variables associated with live birth outcomes in the live birth group showed that: age ( OR=1.151, 95% CI: 1.061-1.249, P=0.001), body mass index ( OR=1.141, 95% CI: 1.074-1.214, P<0.001), and insulin level ( OR=1.206, 95% CI: 1.149-1.266, P<0.001) were independent risk factors for live birth outcome; top-quality embryo rate ( OR=0.101, 95% CI: 0.033-0.310, P<0.001) was a protective factor; and the number of top-quality embryos ( OR=0.949, 95% CI: 0.887-1.014, P=0.104) showed no statistically significant association with live birth outcome. 3) A predictive model for the live-birth outcome after IVF/ICSI-ET in PCOS patients was established. The area under the curve (AUC) values for predicting the live-birth outcome based on female age, BMI, the rate of high-quality embryos, and insulin level were 0.581, 0.747, 0.725, and 0.813, respectively. The combined model of these four factors had an AUC value of 0.846 for predicting the live-birth outcome. 4) A nomogram predictive model for the live-birth outcome after IVF/ICSI-ET in PCOS patients was established. The slope of the model's calibration curve was close to 1, and the H-L test yielded a P>0.05, indicating a high consistency between predicted and actual events. The decision analysis curve confirmed the clinical practicality of the predictive model. Conclusion:Age, BMI and insulin level are independent risk factors for live birth outcomes in PCOS patients undergoing IVF/ICSI-ET, while the high-quality embryo rate serves as a protective factor. The established predictive model demonstrates excellent performance and may facilitate clinical decision-making.

Objective To investigate the mechanism of action of Ginkgo biloba extract on schizophrenia based on oxidative stress-mediated damage to PV interneurons.Methods 54 SPF grade male mice were selected as experimental subjects,divided into blank group,model group,ginkgo biloba extract 50 mg·kg-1,100 mg·kg-1,150 mg·kg-1 group,and risperidone group.Schizophrenic mouse models were established by intraperitoneal injection of MK-801 0.3 mg·kg-1,and behavioral(open field experiment,Y-maze,forced swimming)tests were conducted.Blood samples and brain tissue were collected 24 h after the last dose,Immunofluorescence staining was used to detect changes in PV neurons in the mouse brain;Detect the content of MAD,GSH Px,and SOD in serum using a reagent kit;ELISA method was used to detect the levels of iron and lipid peroxidation in mouse brain tissue;Western blot was used to detect the protein level of GPX4 in the mouse brain.Results Compared with the model group,the Ginkgo biloba leaf extract 150 mg·kg-1 group and the risperidone group significantly reduced the spontaneous alternation rate of the Y maze and significantly shortened the immobility time of forced swimming(P<0.05);PV neuron staining with varying degrees of enhanced fluorescence intensity;The MDA content in the serum of mice was significantly reduced(P<0.01),while the contents of SOD and GSH px were significantly increased(P<0.05);The iron content in the mouse brain was significantly reduced(P<0.05),the ROS content was significantly reduced(P<0.05),and the GPX4 content in the mouse brain was significantly increased(P<0.05).Conclusion Ginkgo biloba extract has a significant improvement effect on negative symptoms and cognitive impairment in MK-801 induced schizophrenia mouse models,and can also improve PV neuron damage in the prefrontal cortex of schizophrenia mice.Its mechanism may be related to the inhibition of iron death mediated oxidative stress by Ginkgo biloba extract.

Objective:This study aimed to analyze the genetic variation of the human papillomavirus (HPV) type 39 genomes and to predict and screen the dominant T-cell and B-cell epitopes of the viral early proteins (E1, E2, E6, E7) and late proteins (L1, L2).Methods:A total of 70 full-length sequences of HPV39 variants were retrieved from the clinical samples and the National Center for Biotechnology Information (NCBI) to construct a phylogenetic tree, analyze genetic polymorphisms, and predict the physicochemical properties of the viral proteins. Next, T-cell and B-cell epitopes were predicted using IEDB and ABCpred, and potential dominant epitopes were further selected based on parameters such as the secondary structure of the epitope region, peptide flexibility, hydrophilicity, surface accessibility and antigenicity. Finally, a homology analysis of the potential dominant epitopes was performed with 12 high-risk HPV types.Results:HPV39 variants from different sources can be clustered into two lineages (A and B), each exhibiting distinct mutation patterns. The mutation rate was the highest in E7 and the lowest in E1 among the different viral genes. However, these nucleotide/amino acid mutations did not significantly impact the physicochemical properties of the viral proteins. After prediction and screening, 5 and 6 potential dominant B-cell epitopes were identified in both L1 and L2, respectively. E1, E2, E6, and E7 yielded 18, 10, 4, and 1 potential dominant HLA-I restricted T-cell epitopes, respectively. Additionally, E1, E2, and E6 yielded 7, 3, and 2 potential dominant HLA-II restricted T-cell epitopes, respectively. Homology analysis indicated that T-cell dominant epitopes in E1, E2, and E6, as well as B-cell epitopes in L2, showed high homology (93%-100%) with HPV68, HPV33, HPV45, and HPV59.Conclusions:Bioinformatics analysis and prediction revealed that HPV39 variants can be clustered into two main evolutionary branches, A and B, each exhibiting a specific mutation pattern. The viral proteins contain potential dominant T-cell and B-cell epitopes that can be further investigated, providing valuable theoretical support for the development of HPV39-related peptide-based vaccines and therapeutics.

Chemotherapy is an important treatment for tumors， but most patients experience varying degrees of chemotherapy- induced myelosuppression. Four properties theory of traditional Chinese medicine （TCM） has unique advantages in improving chemotherapy-induced myelosuppression. The monomers from TCM with different properties and flavors， such as cold-natured （e.g. Scutellaria baicalensis， Rhus chinensis）， cool-natured （e.g. Ligustrum lucidum， Ophiopogon japonicus）， warm-natured （e.g. Panax ginseng， Epimedium brevicornu， Curcuma longa， Angelica sinensis）， hot-natured （e.g. Cinnamomum cassia， Aconitum carmichaeli）， and neutral-natured （e. g. donkey-hide gelatin， Lycium barbarum， Rhodiola rosea， fungi）， can exert anti- myelosuppressive effects by reducing damage to hematopoietic stem/progenitor cells， improving the bone marrow hematopoietic microenvironment， inhibiting the oxidative stress response， regulating signaling pathways， so as to ultimately repaire inflammatory damage and improve hematopoietic function， thereby playing an anti-myelosuppressive role.