BackgroundNon-suicidal self-injury （NSSI） behavior among adolescents has become a global public health concern. Anxiety and depression are considered key factors influencing NSSI behavior， while social support may play a protective role in alleviating emotional and behavioral issues. However， existing research has primarily focused on the direct impact of individual factors on NSSI behavior， with insufficient exploration of the combined effects of anxiety， depression and social support. ObjectiveTo investigate the direct effect of anxiety on NSSI， the mediating role of depression and the moderating role of social support in relationship between anxiety and NSSI behavior， thus to provide references for the prevention and intervention of NSSI behavior among adolescents. MethodsIn February 2022， a total of 40 820 students in grades 7 to 12 across 10 middle schools in a district of Chengdu were selected as participants， and they were assessed using Generalized Anxiety Disorder Scale-7 item （GAD-7）， Patient's Health Questionnaire Depression Scale-9 item （PHQ-9）， Social Support Scale for Urban Students （SSSUS） and Adolescent Self-Harm Scale （ASHS）. Pearson correlation analysis was conducted to examine the correlations between scale scores among adolescents with NSSI behaviors. Mediation and moderation analyses were performed using Process 3.5 in SPSS， and the significance was tested with bootstrapping. The interaction was visualized by using simple slope analysis. ResultsAmong 34 534 （84.60%） valid respondents， 542 adolescents （1.57%） reported engaging in NSSI behavior. Significant differences in gender， GAD-7 scores， PHQ-9 scores， and SSSUS scores were observed between NSSI behavior group and non-NSSI group （χ²/t=62.889， 71.120， 94.365， -41.464， P<0.01）.Adolesents with NSSI showed positive correlations between GAD-7 scores and both ASHS and PHQ-9 scores （r=0.158， 0.166， P<0.01）. PHQ-9 scores were positively correlated with ASHS scores （r=0.364， P<0.01）， but negatively correlated with SSSUS scores （r=-0.290， P<0.01）. SSSUS scores were negatively correlated with ASHS scores （r=-0.247， P<0.01）. Depression partially mediated the relationship between anxiety and NSSI behavior， with an effect size of 0.544 （95% CI： 0.162~0.944）， accounting for 35.79% of the total effect. Social support moderated the relationship between depression and NSSI bahavior， with an effect value of -0.082 （95% CI： -0.135~-0.029）. ConclusionAnxiety not only directly influences NSSI bahavior among adolescents， also indirectly exacerbates it through depression， while social support mitigates the impact of depression on NSSI behavior. ［Funded by Youth Project of National Natural Science Foundation of China （number， 82401812）； Project of Health Commission of Sichuan Province （number， 24LCYJPT18）］

Objective:To compare the differences in specimen results between the intelligent robotic phlebotomy group and the manual venipuncture group, and to evaluate the clinical applicability of the autonomous blood collection system.Methods:From January 20 to October 28, 2022, 154 volunteers at Zhongshan Hospital, Fudan University underwent paired blood collections (robotic and manual) within 5 minutes. The collected samples were analyzed for: hemolysis index (HI), alanine transaminase (ALT), aspartate transaminase (AST), L-γ-glutamyltransferase (γ-GT), lactate dehydrogenase (LDH), urea nitrogen (UREA), creatinine (CRE), uric acid (UA), glucose (GLU), total cholesterol (TC), triglyceride (TG), natrium (Na), kalium (K), chlorine (Cl), creatine kinase (CK), CK-MB, CK-MM, and neuron-specific enolase (NSE). Statistical analyses used t-tests and Wilcoxon signed-rank tests.Results:The results of two different blood collection methods revealed that the HI values of 154 specimens in the intelligent robot blood collection group were all less than 20SI, while 7 specimens (4.54%) in the manual blood collection group had HI values exceeding 20SI; In the comparison of 17 biochemical and immunological markers, there were statistically significant differences between groups in 8 items including γ-GT[20.00(15.00, 37.75)U/L vs. 19.00 (14.00, 36.25)U/L, Z=2.497, P<0.05], LDH[165.5 (147.0, 183.0)U/L vs. 173.0 (155.0, 193.0)U/L, Z=8.629, P<0.05], TC[(5.002±0.856)mmol/L vs.(5.031±0.870) mmol/L, t=-3.006, P<0.05], K[4.1 (4.0, 4.3)mmol/L vs. 4.3 (4.1, 4.4)mmol/L, Z=5.592, P<0.05], CK[97.00 (73.00, 133.00)U/L vs. 99.00 (74.75, 136.25)U/L, Z=3.490, P<0.05], CK-MB[13 (11, 15)U/L vs. 14 (12, 16)U/L, Z=6.581, P<0.05], CK-MM[84.00 (60.00, 119.00)U/L vs. 83.50 (58.75, 118.00)U/L, Z=3.790, P<0.05], and NSE[10.600 (9.500, 11.700)ng/ml vs. 11.950 (10.475, 13.725)ng/ml, Z=8.151, P<0.05]. Conclusions:In the collection of serum samples, intelligent blood collection robots can achieve standardization and normalization of specimen collection volume and mixing in the pre-analysis stage. The hemolysis related indicators of the collected specimens are lower than those of the manual collection group, and can be used for the collection of clinical serological specimens.

BACKGROUND:Recent studies have found that Nrf2/ARE signaling pathway activators have the characteristics of low toxicity and control,and have a protective effect against radiation tissue damage.OBJECTIVE:To investigate whether nitrooleic acid can protect submandibular gland epithelial cells from radiation injury by regulating the Nrf2/ARE signaling pathway.METHODS:Rat submandibular gland epithelial cells were cultured in vitro and CCK-8 assay was used to screen the optimal concentration and time of nitrooleic acid administration.Submandibular gland epithelial cells were divided into non-radiation group,radiation control group,nitrooleic acid group,nitrooleic acid+ML385(Nrf2/ARE signaling pathway specific inhibitor)group,and ML385 group.Submandibular gland cells were pretreated with nitrooleic acid and ML385 for 24 hous according to the experimental groups,and then irradiated with 5 Gy radiation to establish the models.At 48 hours after irradiation,CCK-8 assay was used to detect the cell proliferation rate.Real-time quantitative PCR was used to detect the expression of Nrf2,HO-1,and NQO1 mRNA in the cells.Real-time quantitative PCR and enzyme-linked immunosorbent assay were used to detect the cell secretion function and the expression of inflammatory factors.DCFH-DA fluorescent probe kit was used to detect the level of intracellular reactive oxygen species.RESULTS AND CONCLUSION:(1)Compared with the radiation control group,the proliferation rate of submandibular gland epithelial cells and the expression levels of secretion function related factors aquaporin 5 and α-amylase in the nitrooleic acid group of rats increased(P＜0.05),and the expression levels of Nrf2,HO-1,and NQO1 mRNA increased(P＜0.05),while the expression levels of inflammatory factors interleukin-1β,interleukin-6,and tumor necrosis factor-αdecreased(P＜0.05),and reactive oxygen species generation reduced(P＜0.01).(2)Compared with the nitrooleic acid group,the addition of nitrooleic acid and ML385 group resulted in a decrease in cell proliferation rate and expression levels of secretion function related factors aquaporin 5 and α-amylase(P＜0.05),and mRNA expressions of Nrf2,HO-1,and NQO1 were all decreased(P＜0.05),while the expression levels of inflammatory factors interleukin-1β,interleukin-6,and tumor necrosis factor-α increased(P＜0.05),and generation of reactive oxygen species increased(P＜0.05).(3)Results indicated that in the radiation environment,nitrooleic acid has a certain protective effect on the proliferation ability and secretion function of rat submandibular gland epithelial cells,reduces the expression of inflammatory factors,lowers intracellular reactive oxygen species levels,and alleviates the damage of rat submandibular gland epithelial cells caused by radiation.This function may be related to the activation of Nrf2/ARE signaling pathway.

BackgroundThe distressingly high prevalence of depressive symptoms among adolescents exerts profound impacts on their physical and psychological development， urgently necessitating effective preventive interventions. Existing studies， however， have predominantly focused on isolated risk factors， neglecting to construct an integrated model that systematically disentangles the intricate relationships linking parenting styles， learning burnout， and childhood trauma to adolescent depressive symptoms. Moreover， the potential protective roles of social support and psychological resilience in this context remain insufficiently elucidated. ObjectiveTo construct a structural equation model encompassing multiple pathways to unravel the comprehensive mechanisms through which negative parenting styles， childhood trauma， learning burnout， psychological resilience， and social support collectively influence adolescent depressive symptoms， thereby providing evidence-based intervention strategies. MethodsA stratified sampling technique was utilized to recruit 5 865 students from 12 middle schools in Chengdu City， Sichuan Province from March to May 2022. Participants were assessed using the following validated instruments： the Short-form Egna Minnen av Barndoms Uppfostran （s-EMBU）， the Childhood Trauma Questionnaire-Short Form （CTQ-SF）， the Adolescent Student Burnout Inventory， the Patients' Health Questionnaire Depression Scale-9 item （PHQ-9）， the Social Support Rating Scale （SSRS），and the Connor-Davidson Resilience Scale （CD-RISC）. A partial least squares structural equation modeling （PLS-SEM） approach was employed to construct a predictive framework examining the complex network of pathways through which negative parenting styles， childhood trauma， learning burnout， psychological resilience，and social support collectively influence depressive symptoms in adolescents. ResultsThe PHQ-9 scores demonstrated significant positive correlations with the scores on s-EMBU overprotection subscale （r=0.272， P<0.01）， s-EMBU rejection subscale （r=0.368， P<0.01）， CTQ-SF （r=0.288， P<0.01） and Adolescent Student Burnout Inventory （r=0.587， P<0.01）. Conversely， significant negative correlations were observed between PHQ-9 scores and both SSRS （r=-0.532， P<0.01） and CD-RISC scores （r=-0.418， P<0.01）. Negative parenting styles （β=0.113， 95% CI： 0.087-0.138） and learning burnout （β=0.339， 95% CI： 0.315-0.364） emerged as significant positive predictors of depressive symptoms， with childhood trauma mediating the relationship between negative parenting styles and depressive symptoms （effect size=0.018， 95% CI： 0.013-0.024）. Social support servesed as a mediating pathway between negative parenting styles and depressive symptoms （β=0.080， 95% CI： 0.069-0.092）， as well as between negative parenting styles and childhood trauma （β=0.041， 95% CI： 0.032-0.050）. It also functioned as an intermediary pathway linking learning burnout to depressive symptoms （β=0.092， 95% CI： 0.081-0.104） and connecting learning burnout with childhood trauma （β=0.048， 95% CI： 0.037-0.058）. Additionally， psychological resilience serveed as a mediating pathway between negative parenting styles and depressive symptoms （β=0.004， 95% CI： 0.002-0.007）， between learning burnout and depressive symptoms （β=0.037， 95% CI： 0.023-0.052）， and between childhood trauma and depressive symptoms （β=0.003， 95% CI： 0.001-0.006）. ConclusionLearning burnout exerts a direct effect on adolescent depressive symptoms. Negative parenting styles influence depressive symptoms both directly and indirectly through childhood trauma. Furthermore， social support and psychological resilience serve as mediator linking negative parenting styles and learning burnout to depressive symptoms in adolescents. ［Funded by Science and Technology Project of the Health Commission of Sichuan Province （number， 24LCYJPT18）］

BACKGROUND:Recent studies have found that Nrf2/ARE signaling pathway activators have the characteristics of low toxicity and control,and have a protective effect against radiation tissue damage.OBJECTIVE:To investigate whether nitrooleic acid can protect submandibular gland epithelial cells from radiation injury by regulating the Nrf2/ARE signaling pathway.METHODS:Rat submandibular gland epithelial cells were cultured in vitro and CCK-8 assay was used to screen the optimal concentration and time of nitrooleic acid administration.Submandibular gland epithelial cells were divided into non-radiation group,radiation control group,nitrooleic acid group,nitrooleic acid+ML385(Nrf2/ARE signaling pathway specific inhibitor)group,and ML385 group.Submandibular gland cells were pretreated with nitrooleic acid and ML385 for 24 hous according to the experimental groups,and then irradiated with 5 Gy radiation to establish the models.At 48 hours after irradiation,CCK-8 assay was used to detect the cell proliferation rate.Real-time quantitative PCR was used to detect the expression of Nrf2,HO-1,and NQO1 mRNA in the cells.Real-time quantitative PCR and enzyme-linked immunosorbent assay were used to detect the cell secretion function and the expression of inflammatory factors.DCFH-DA fluorescent probe kit was used to detect the level of intracellular reactive oxygen species.RESULTS AND CONCLUSION:(1)Compared with the radiation control group,the proliferation rate of submandibular gland epithelial cells and the expression levels of secretion function related factors aquaporin 5 and α-amylase in the nitrooleic acid group of rats increased(P＜0.05),and the expression levels of Nrf2,HO-1,and NQO1 mRNA increased(P＜0.05),while the expression levels of inflammatory factors interleukin-1β,interleukin-6,and tumor necrosis factor-αdecreased(P＜0.05),and reactive oxygen species generation reduced(P＜0.01).(2)Compared with the nitrooleic acid group,the addition of nitrooleic acid and ML385 group resulted in a decrease in cell proliferation rate and expression levels of secretion function related factors aquaporin 5 and α-amylase(P＜0.05),and mRNA expressions of Nrf2,HO-1,and NQO1 were all decreased(P＜0.05),while the expression levels of inflammatory factors interleukin-1β,interleukin-6,and tumor necrosis factor-α increased(P＜0.05),and generation of reactive oxygen species increased(P＜0.05).(3)Results indicated that in the radiation environment,nitrooleic acid has a certain protective effect on the proliferation ability and secretion function of rat submandibular gland epithelial cells,reduces the expression of inflammatory factors,lowers intracellular reactive oxygen species levels,and alleviates the damage of rat submandibular gland epithelial cells caused by radiation.This function may be related to the activation of Nrf2/ARE signaling pathway.

Objective:To compare the differences in specimen results between the intelligent robotic phlebotomy group and the manual venipuncture group, and to evaluate the clinical applicability of the autonomous blood collection system.Methods:From January 20 to October 28, 2022, 154 volunteers at Zhongshan Hospital, Fudan University underwent paired blood collections (robotic and manual) within 5 minutes. The collected samples were analyzed for: hemolysis index (HI), alanine transaminase (ALT), aspartate transaminase (AST), L-γ-glutamyltransferase (γ-GT), lactate dehydrogenase (LDH), urea nitrogen (UREA), creatinine (CRE), uric acid (UA), glucose (GLU), total cholesterol (TC), triglyceride (TG), natrium (Na), kalium (K), chlorine (Cl), creatine kinase (CK), CK-MB, CK-MM, and neuron-specific enolase (NSE). Statistical analyses used t-tests and Wilcoxon signed-rank tests.Results:The results of two different blood collection methods revealed that the HI values of 154 specimens in the intelligent robot blood collection group were all less than 20SI, while 7 specimens (4.54%) in the manual blood collection group had HI values exceeding 20SI; In the comparison of 17 biochemical and immunological markers, there were statistically significant differences between groups in 8 items including γ-GT[20.00(15.00, 37.75)U/L vs. 19.00 (14.00, 36.25)U/L, Z=2.497, P<0.05], LDH[165.5 (147.0, 183.0)U/L vs. 173.0 (155.0, 193.0)U/L, Z=8.629, P<0.05], TC[(5.002±0.856)mmol/L vs.(5.031±0.870) mmol/L, t=-3.006, P<0.05], K[4.1 (4.0, 4.3)mmol/L vs. 4.3 (4.1, 4.4)mmol/L, Z=5.592, P<0.05], CK[97.00 (73.00, 133.00)U/L vs. 99.00 (74.75, 136.25)U/L, Z=3.490, P<0.05], CK-MB[13 (11, 15)U/L vs. 14 (12, 16)U/L, Z=6.581, P<0.05], CK-MM[84.00 (60.00, 119.00)U/L vs. 83.50 (58.75, 118.00)U/L, Z=3.790, P<0.05], and NSE[10.600 (9.500, 11.700)ng/ml vs. 11.950 (10.475, 13.725)ng/ml, Z=8.151, P<0.05]. Conclusions:In the collection of serum samples, intelligent blood collection robots can achieve standardization and normalization of specimen collection volume and mixing in the pre-analysis stage. The hemolysis related indicators of the collected specimens are lower than those of the manual collection group, and can be used for the collection of clinical serological specimens.

The nutritional survey was made in 184 anorexia children aged 3-7, 123 of them were treated with various measures for three months. The results indicated that the children with anorexia had low intake and deficiency in energy, protein, minerals and vitamins. Most of them had zinc deficiency, but they simultaneously had two to three nutrients deficiency.The zinc treatment could improve most patient's syndrome and nutritional status. The effect of zinc treatment with vitamines and iron preparations was better than zinc treatment only. The effect of treatment with Chinese medicine also was able to cure the children with anorexia to certain extent.