Objective:To explore the effect of exercise on the memory of rats modeling vascular cognitive impairment (VCI) and also its effects on the hippocampal Sema3G/neuropilin-2 (Nrp2)/PlexinA4 signaling pathway.Methods:Eighteen male Sprague-Dawley rats were randomly divided into a sham-operated group, a model group, and an exercise group, each of 6. The model and exercise groups underwent VCI modeling via bilateral common carotid artery occlusion, while the sham-operated group received the same surgical procedure without vessel ligation or transection. Beginning forty-eight hours after the surgery, the exercise group carried out daily 30-minute treadmill training sessions, 5 days a week, for a total of 4 weeks, while the other two groups were placed on the same treadmill with it not in operation. After the intervention, cognitive functioning was assessed using the novel object recognition (NOR) test and a Y-maze test. Western blotting was employed to evaluate the expression of Sema3G, Nrp2, PlexinA4, and Rac1 in the hippocampus. Immunofluorescence staining was used to observe the distribution of Nrp2 and PlexinA4 in the hippocampus.Results:Compared with the model group, the exercise group exhibited significantly higher NOR indices during both the short-term and long-term memory testing phases after the intervention. Those rats also tended to have significantly longer total exploration times in the novel arm of the Y-maze test. The western blotting revealed that the expression levels of Sema3G, PlexinA4, and Rac1 in the hippocampus were significantly higher in the exercise group compared to the model group, on average. Immunofluorescence showed significantly increased PlexinA4 fluorescence intensity in the CA1, CA3, and dentate gyrus (DG) regions of the hippocampus, and significantly elevated Nrp2 fluorescence intensity in the CA3 region in the exercise group compared to the model group. The Pearson correlation coefficients for Nrp2/PlexinA4 co-localization in the CA1, CA3 and DG regions were significantly higher in the exercise group than in the model group.Conclusions:Exercise training significantly improves memory function in rats with VCI, and this effect may be associated with activation of the hippocampal Sema3G/Nrp2/PlexinA4 signaling pathway.

Objective To assess the impact of long working hours on sleep disorders among manufacturing workers and explore the roles of alcohol consumption and mental health factors(anxiety and depressive symptoms)in this association.Methods A cross-sectional study design was used to survey 1 336 manufacturing workers in Shenzhen.We collected the data of their demographic characteristics,work-related factors,personal behaviors,sleep disorders,and mental health status.Multivariate Logistic regression analysis was used to assess the association between long working hours and sleep disorders.Stratified analysis and mediation effect models were applied to examine the effect modification by alcohol consumption and the mediating role of mental health factors,respectively.Results Among the study samples,31.8％reported long working hours and 45.6％had sleep disorders.Multivariate Logistic regression analysis showed that long working hours significantly increased the risk of sleep disorders(adjusted OR=2.073,95％ CI:1.478-2.907,P＜0.001).Stratified analysis revealed that the association between long working hours and sleep disorders was more pronounced among alcohol consumers(adjusted OR=2.556,95％ CI:1.432-4.562,P=0.001).Mediation effect analysis showed that anxiety and depressive symptoms partially mediated the relationship between long working hours and sleep disorders,with indirect effects accounting for 25.71％ and 27.14％,respectively.Conclusion Long working hours increase the risk of sleep disorders among manufacturing workers,particularly among those who consume alcohol.Anxiety and depressive symptoms partially explain the association between long working hours and sleep disorders.

Background Long working hours are a risk factor for occupational health, particularly in labor-intensive sectors such as manufacturing. Prolonged working hours may have adverse effects on the sleep and mental health of employees. Objective To investigate the impact of long working hours on insomnia, anxiety, and depression symptoms among manufacturing industry employees and provide scientific evidence for relevant occupational health interventions. Methods A cross-sectional study was conducted involving 1524 employees from eight manufacturing enterprises in Shenzhen. Data were collected using a structured questionnaire, which included demographic characteristics, work conditions (e.g., years of employment, job type, shift work, night shifts, weekly working hours), personal behaviors (e.g., smoking and drinking habits), and the occurrence of insomnia (by the Athens Insomnia Scale), anxiety (by the Generalized Anxiety Disorder Scale), and depression (by the Patient Health Questionnaire). Participants were classified into two groups based on working hours: long working hours (≥55 h per week) and normal working hours (35-40 h per week). Binary logistic regression was used to analyze the association between long working hours and the occurrences of insomnia, anxiety, and depression symptoms. Results A total of 1491 manufacturing industry employees were included in the study (response rate: 97.8%). The sample consisted of 54.19% males and 45.81% females, with the largest proportion was those aged 40-49 years (45.48%). The proportion of workers with long working hours in the total population was 31.52%, with the highest proportion among production and technical employees (36.49%). The prevalence of insomnia, anxiety, and depression symptoms was 56.2%, 26.6%, and 23.8%, respectively in the long working hours group, significantly higher than those in the normal working hours group (P<0.05). After adjusting for potential confounders, the logistic regression analysis showed that long working hours were significantly associated with increased risks of insomnia (OR=2.16, 95%CI: 1.60, 2.91), anxiety (OR=1.94, 95%CI: 1.34, 2.81), and depression symptoms (OR=1.62, 95%CI: 1.11, 2.38) compared to normal working hours. Conclusion Long working hours significantly increase the risks of insomnia, anxiety, and depression symptoms among manufacturing industry employees. It is recommended that measures should be implemented to limit working hours, increase rest periods, and provide occupational health education and psychological support to improve the sleep and mental health of employees.

Objective To assess the impact of long working hours on sleep disorders among manufacturing workers and explore the roles of alcohol consumption and mental health factors(anxiety and depressive symptoms)in this association.Methods A cross-sectional study design was used to survey 1 336 manufacturing workers in Shenzhen.We collected the data of their demographic characteristics,work-related factors,personal behaviors,sleep disorders,and mental health status.Multivariate Logistic regression analysis was used to assess the association between long working hours and sleep disorders.Stratified analysis and mediation effect models were applied to examine the effect modification by alcohol consumption and the mediating role of mental health factors,respectively.Results Among the study samples,31.8％reported long working hours and 45.6％had sleep disorders.Multivariate Logistic regression analysis showed that long working hours significantly increased the risk of sleep disorders(adjusted OR=2.073,95％ CI:1.478-2.907,P＜0.001).Stratified analysis revealed that the association between long working hours and sleep disorders was more pronounced among alcohol consumers(adjusted OR=2.556,95％ CI:1.432-4.562,P=0.001).Mediation effect analysis showed that anxiety and depressive symptoms partially mediated the relationship between long working hours and sleep disorders,with indirect effects accounting for 25.71％ and 27.14％,respectively.Conclusion Long working hours increase the risk of sleep disorders among manufacturing workers,particularly among those who consume alcohol.Anxiety and depressive symptoms partially explain the association between long working hours and sleep disorders.

Objective:To explore the effect of exercise on the memory of rats modeling vascular cognitive impairment (VCI) and also its effects on the hippocampal Sema3G/neuropilin-2 (Nrp2)/PlexinA4 signaling pathway.Methods:Eighteen male Sprague-Dawley rats were randomly divided into a sham-operated group, a model group, and an exercise group, each of 6. The model and exercise groups underwent VCI modeling via bilateral common carotid artery occlusion, while the sham-operated group received the same surgical procedure without vessel ligation or transection. Beginning forty-eight hours after the surgery, the exercise group carried out daily 30-minute treadmill training sessions, 5 days a week, for a total of 4 weeks, while the other two groups were placed on the same treadmill with it not in operation. After the intervention, cognitive functioning was assessed using the novel object recognition (NOR) test and a Y-maze test. Western blotting was employed to evaluate the expression of Sema3G, Nrp2, PlexinA4, and Rac1 in the hippocampus. Immunofluorescence staining was used to observe the distribution of Nrp2 and PlexinA4 in the hippocampus.Results:Compared with the model group, the exercise group exhibited significantly higher NOR indices during both the short-term and long-term memory testing phases after the intervention. Those rats also tended to have significantly longer total exploration times in the novel arm of the Y-maze test. The western blotting revealed that the expression levels of Sema3G, PlexinA4, and Rac1 in the hippocampus were significantly higher in the exercise group compared to the model group, on average. Immunofluorescence showed significantly increased PlexinA4 fluorescence intensity in the CA1, CA3, and dentate gyrus (DG) regions of the hippocampus, and significantly elevated Nrp2 fluorescence intensity in the CA3 region in the exercise group compared to the model group. The Pearson correlation coefficients for Nrp2/PlexinA4 co-localization in the CA1, CA3 and DG regions were significantly higher in the exercise group than in the model group.Conclusions:Exercise training significantly improves memory function in rats with VCI, and this effect may be associated with activation of the hippocampal Sema3G/Nrp2/PlexinA4 signaling pathway.

Objective:To investigate the effect of mild hypothermia on macrophage polarization in lipopolysaccharide (LPS)-induced acute lung injury (ALI) mice and to clarify its role in lung injury.Methods:According to a random number table method, 18 male C57BL/6 mice were divided into sham operation group (Sham group), ALI normothermic model group (NT group) and ALI mild hypothermia treatment group (HT group), with 6 mice in each group. The ALI model in mice was established by the method of tracheal instillation of LPS, and temperature control was administered at 1 hour after surgery. The anus temperature in NT group was kept at 36-38?℃, while the anus temperature in HT group was kept at 32-34?℃. The target anus temperature in both groups were maintained for 6 hours and then slowly rewarmed to 36-38 ℃. The Sham group was infused with an equal amount of physiological saline through the trachea without temperature control. After 24 hours of modeling, serum was collected and mice were sacrificed to obtain lung tissue. Pathological changes in lung tissue were observed under light microscopy and semi-quantitative lung injury score was performed. Enzyme linked immunosorbent assay (ELISA) was used to detect the serum levels of interleukins (IL-1β, IL-10). Real-time quantitative polymerase chain reaction (RT-qPCR) was used to test the indicators of macrophage polarization, such as the mRNA expressions of CD86, IL-6, CD206 and arginase 1 (Arg1) in the lung tissue. The protein expression of M1 macrophage marker inducible nitric oxide synthase (iNOS) and M2 macrophage marker Arg1 were detected by Western blotting.Results:Compared with the Sham group, the NT group appeared significant pulmonary hemorrhage and edema, thickened lung septum, inflammatory cell infiltration, and lung injury score was significantly increased; serum IL-1β level was significantly elevated; IL-10 level was increased without statistical significance; the expressions of CD86 mRNA, IL-6 mRNA and iNOS protein were significantly elevated, and CD206 mRNA was significantly decreased; the mRNA and protein expressions of Arg1 decreased, but there were no significant differences. Compared with the NT group, the pathological injury of lung tissue in HT group was significantly reduced, and the lung injury score was significantly decreased (4.78±0.96 vs. 8.56±1.98, P < 0.01); serum IL-1β level was decreased (ng/L: 13.52±1.95 vs. 27.18±3.87, P < 0.01), and IL-10 level was significantly increased (ng/L: 42.59±15.79 vs. 14.62±4.47, P < 0.01); IL-6 mRNA expression was decreased in lung tissue (2 -ΔΔCt: 3.37±0.92 vs. 10.04±0.91, P < 0.05), the expression of M1 macrophage markers CD86 mRNA and iNOS protein were significantly decreased [CD86 mRNA (2 -ΔΔCt): 0.52±0.16 vs. 1.95±0.33, iNOS protein (iNOS/β-actin): 0.57±0.19 vs. 1.11±0.27, both P < 0.05], the expression of M2 macrophage markers CD206 mRNA, Arg1 mRNA and Arg1 protein were significantly increased [CD206 mRNA (2 -ΔΔCt): 3.99±0.17 vs. 0.34±0.17, Arg1 mRNA (2 -ΔΔCt): 2.33±0.73 vs. 0.94±0.23, Arg1 protein (Arg1/β-actin): 0.96±0.09 vs. 0.31±0.11, all P < 0.05]. Conclusion:Mild hypothermia can alleviate the inflammatory response and protect lung tissue in ALI mice, which may be related to the inhibition of M1 macrophage polarization and promotion of M2 macrophage polarization.

Objective: To evaluate the efficacy of a self-developed mobile augmented reality navigation system (MARNS) in guiding spinal level positioning during intraspinal tumor surgery based on a dual-error theory. Methods: This retrospective study enrolled patients diagnosed with intraspinal tumors admitted to Fujian Provincial Hospital between May and November 2023. The participants were divided into conventional x-rays and self-developed MARNS groups according to the localization methods they received. Position time, length of intraoperative incision variation, and location accuracy were systematically compared. Results: A total of 41 patients (19 males) with intraspinal tumors were included, and MARNS was applied to 21 patients. MARNS achieved successful lesion localization in all patients with an error of 0.38±0.12 cm. Compared to x-rays, MARNS significantly reduced positioning time (129.00±13.03 seconds vs. 365.00±60.43 seconds, p<0.001) and length of intraoperative incision variation (0.14 cm vs. 0.67 cm, p=0.009). Conclusion The self-developed MARNS, based on augmented reality technology for lesion visualization and perpendicular projection, offers a radiation-free complement to conventional x-rays.

Objective To explore the correlation between the expression level of interferon gamma(IFN-γ)and the severity of patients with septic shock and its prognostic value.Methods The clinical data and serum of 96 septic shock patients admitted to the Department of Critical Care Medicine,the First Affiliated Hospital of Guangxi Medical University from March 2022 to August 2023 were collected,and divided into survival group and death group according to the 28-day outcome;collected at the same time Sera from 30 healthy people undergoing physi-cal examination during the same period served as the control group.The enzyme-linked immunosorbent(ELISA)method was used to detect the expression levels of IFN-γ in the three groups,and the expression levels of IFN-γ and various clinical data between the groups were analyzed.Results The serum IFN-γ expression level of patients with septic shock was lower than that of healthy people undergoing physical examination,212.80(151.11,255.79)ng/L compared with 343.37(314.5,427.95)ng/L,P<0.01.Among the 96 cases of septic shock,There were 54 cases in the survival group and 42 cases in the death group.The clinical data of the two groups were com-pared.The gender,smoking history,SBP,DBP,SI,Lac,IL-6,IFN-γ,PCT,SOFA score,and APACHEⅡscore of the two groups of patients were compared.The difference is statistically significant(P<0.01).Logistic regression analysis showed that decreased expression of Lac,IFN-γ,and APACHEⅡ score were independent risk factors for death in patients with septic shock.[Odds ratio(OR)and 95%confidence interval(95%CI)were 6.491(1.404～30.004)respectively.0.954(0.954～0.999),3.476(1.210～9.984),P<0.05].The Spearman correlation analysis of INF-γ,Lac and APACHEⅡ showed a negative correlation,and the correlation coefficients were-0.38 and-0.35 respectively.Drawing the ROC curves of Lac,IFN-γ,and APACHEII,the AUCs of the three were 0.847,0.869,and 0.833 respectively.The AUC of the three joint predictions was 0.978.The joint prediction value of the three was better than that of a single indicator,P<0.001.Conclusion The decrease in IFN-γ expression level and the severity of septic shock patients have good prognostic value.

Objective: To evaluate the efficacy of a self-developed mobile augmented reality navigation system (MARNS) in guiding spinal level positioning during intraspinal tumor surgery based on a dual-error theory. Methods: This retrospective study enrolled patients diagnosed with intraspinal tumors admitted to Fujian Provincial Hospital between May and November 2023. The participants were divided into conventional x-rays and self-developed MARNS groups according to the localization methods they received. Position time, length of intraoperative incision variation, and location accuracy were systematically compared. Results: A total of 41 patients (19 males) with intraspinal tumors were included, and MARNS was applied to 21 patients. MARNS achieved successful lesion localization in all patients with an error of 0.38±0.12 cm. Compared to x-rays, MARNS significantly reduced positioning time (129.00±13.03 seconds vs. 365.00±60.43 seconds, p<0.001) and length of intraoperative incision variation (0.14 cm vs. 0.67 cm, p=0.009). Conclusion The self-developed MARNS, based on augmented reality technology for lesion visualization and perpendicular projection, offers a radiation-free complement to conventional x-rays.

Objective: To evaluate the efficacy of a self-developed mobile augmented reality navigation system (MARNS) in guiding spinal level positioning during intraspinal tumor surgery based on a dual-error theory. Methods: This retrospective study enrolled patients diagnosed with intraspinal tumors admitted to Fujian Provincial Hospital between May and November 2023. The participants were divided into conventional x-rays and self-developed MARNS groups according to the localization methods they received. Position time, length of intraoperative incision variation, and location accuracy were systematically compared. Results: A total of 41 patients (19 males) with intraspinal tumors were included, and MARNS was applied to 21 patients. MARNS achieved successful lesion localization in all patients with an error of 0.38±0.12 cm. Compared to x-rays, MARNS significantly reduced positioning time (129.00±13.03 seconds vs. 365.00±60.43 seconds, p<0.001) and length of intraoperative incision variation (0.14 cm vs. 0.67 cm, p=0.009). Conclusion The self-developed MARNS, based on augmented reality technology for lesion visualization and perpendicular projection, offers a radiation-free complement to conventional x-rays.