BACKGROUND: Previous evidence showed that ambient air pollution and cardiovascular mortality are related. However, there is a lack of evidence towards the modification effect of long-term lifestyle on the association between short-term ambient air pollution and death from cardiovascular events. METHOD: A total of 14,609 death from major adverse cardiovascular events (MACE) were identified among the China Kadoorie Biobank participants from 2013 to 2018. Ambient air pollution exposure including particulate matter 2.5 (PM_2.5), SO₂, NO₂, CO, and O₃ from the same period were obtained from space-time model reconstructions based on remote sensing data. Case-crossover design and conditional logistic regression was applied to estimate the effect of short-term exposure to air pollutants on MACE mortality. RESULTS: We found MACE mortality was significantly associated with PM_2.5 (relative percent increase 2.91% per 10 µg/m³ increase, 95% CI 1.32-4.53), NO₂ (5.37% per 10 µg/m³ increase, 95% CI 1.56-9.33), SO₂ (6.82% per 10 µg/m³ increase, 95% CI 2.99-10.80), and CO (2.24% per 0.1 mg/m³ increase, 95% CI 1.02-3.48). Stratified analyses indicated that drinking was associated with elevated risk of MACE mortality with NO₂ and SO₂ exposure; physical inactivity was associated with higher risk of death from MACE when exposed to PM_2.5; and people who had balanced diet had lower risk of MACE mortality when exposed to CO and NO₂. CONCLUSIONS The study results showed that short-term exposure to ambient PM_2.5, NO₂, SO₂, and CO would aggravate the risk of cardiovascular mortality, yet healthy lifestyle conduct might mitigate such negative impact to some extent.
Humans ; Cardiovascular Diseases/epidemiology* ; China/epidemiology* ; Male ; Female ; Air Pollution/adverse effects* ; Middle Aged ; Air Pollutants/analysis* ; Particulate Matter/analysis* ; Environmental Exposure/adverse effects* ; Life Style ; Aged ; Adult ; Risk Factors ; Cross-Over Studies ; East Asian People

Objective: To investigate the association between outdoor light at night (LAN) exposure and sleep quality among primary and secondary school students, and to examine the pathways of negative affects including depressive, stress and anxiety symptoms, so as to provide a theoretical basis for optimizing the school environment and enhancing the physical and mental well being of students. Methods: In December 2024, a total of 36 885 students from 154 primary and secondary schools in Suzhou, Nantong, and Changzhou were included via a stratified cluster sampling method. Sleep quality and negative affect were assessed by using the Pittsburgh Sleep Quality Index (PSQI), Center for Epidemiologic Studies Depression Scale (CES-D), Generalized Anxiety Disorder-7 (GAD-7), and Depression, Anxiety and Stress Scale-21 (DASS-21), respectively. Outdoor LAN exposure data were obtained from the national polar orbiting partnership visible infrared imaging radiometer suite nighttime light(NPP-VIIRS NTL) dataset provided by the National Earth System Science Data Center. Multivariate Logistic regression model was employed to analyze the association between LAN exposure and sleep quality across different regions, with stratification by monitoring site. Spearman correlation analysis was used to examine the relationships between LAN, negative affect, and sleep quality. The mediating role of negative affect was tested by using Model 4 of the PROCESS macro. Results: The detection rates among students were 13.95%( n =5 147) for depressive symptom, 16.72%( n =6 166) for stress symptom, and 17.49%( n =6 451) for anxiety symptom. The median outdoor LAN exposure was 28.85(19.10, 41.44)nW/(cm 2 · ( sr). After adjusting for confounders, multivariate Logistic regression analysis showed that high LAN exposure ( Q 4) was positively associated with sleep problems (urban areas: OR =1.28, 95% CI = 1.17- 1.41; rural areas: OR =1.21, 95% CI =1.07-1.36; both P <0.05). Spearman correlation analysis revealed significant positive correlations between LAN exposure, depressive symptoms, stress symptoms, anxiety symptoms, and sleep quality ( r =0.03-0.75, all P < 0.01). The mediation analysis indicated that all dimensions of negative affect significantly mediated the relationship between high LAN exposure and poor sleep quality (all P <0.01). Specifically, the indirect effects were 0.03 (95% CI =0.02-0.05) for depressive symptom, 0.05(95% CI =0.03-0.08) for stress symptom, and 0.07(95% CI =0.05-0.09) for anxiety symptom. Overall, 31.9% of the total effect was mediated by negative affect, with anxiety (14.89%) being the strongest mediator, followed by stress (10.64%) and depression(6.38%). Conclusion Reducing high levels of outdoor LAN exposure and implementing interventions targeting negative affect may contribute to improved sleep quality among primary and secondary school students.

This study aims to analyze the screening results and epidemiological characteristics of prostate cancer (PCa) among elderly males in the rural areas of Songjiang, Shanghai City, through the implementation of a preliminary prostate-specific antigen (PSA) screening based on a community-linkage model, and to explore an effective screening approach. A retrospective observational study design was employed to collect data from residents who underwent PSA screening at Songjiang Hospital affiliated to Shanghai Jiao Tong University School of Medicine, in collaboration with multiple community health service centers in Songjiang District, Shanghai City, between June 2022 and June 2024, through free clinics and annual health examinations. Prostate biopsy was recommended for individuals with total PSA (tPSA) levels >10 ng/ml and those with 4 ng/ml≤tPSA≤10 ng/ml and abnormal free-to-total PSA (f/tPSA) ratios. Clinical characteristics of detected PCa patients were analyzed. Follow-up was conducted through phone calls and home visits by family doctors, coupled with enhanced health education. The results indicated that a total of 17 198 residents participated in the screening, among which 2 234 (12.99%) had tPSA levels between 4 ng/ml and 10 ng/ml, and 257 (1.49%) had tPSA levels >10 ng/ml. Ultimately, 417 residents underwent prostate biopsy, with 171 being diagnosed with PCa, yielding a positive biopsy rate of 41.00% and a PCa detection rate of 0.99%. The predominant pathological subtype among PCa patients was adenocarcinoma (168 cases, 98.24%). Of the 146 PCa patients who received treatment, the majority were classified as intermediate or high-risk (124 cases, 84.93%). Furthermore, with the optimization of the screening model, there was a significant increase in the proportion of subsequent outpatient visits. In conclusion, the community-linkage-based PSA screening model demonstrated high effectiveness in screening for PCa among elderly males in the rural areas of Songjiang, Shanghai City. Epidemiological findings revealed that PCa patients in this region are primarily composed of intermediate and high-risk groups, highlighting the need for intensified early screening and health education.

Objective To explore the effects of graphene quantum dots(GQDs)on the reprogramming of Müller cells.Methods Müller cells were randomly divided into the control,dedifferentiation,dedifferentiation+GQD,and GQD groups.The cells in the dedifferentiation group and the dedifferentiation+GQD group were dedifferentiated using the serum-free medium containing DMEM/F12(1∶1),20 μg·L-1 EGF,10 μg·L-1 bFGF,2 × B27,and 1 × N2 for 5 d.Then,the cells in the dedifferentiation+GQD group and the GQD group were treated with 50 mg·L-1 GQDs for 72 h.The Müller cells in the control group were subjected to normal cell culture.Immunofluorescence staining was used to identify the ex-pression of Müller cell markers,including glial fibrillary acidic protein(GFAP),glutamate-aspartate transporter(GLAST),and glutamine synthetase(GS).Phalloidin staining was performed to observe whether Müller cells could take up GQDs.The effect of different concentrations of GQDs on the proliferation of Müller cells was assessed using the cell counting kit-8(CCK-8)assay.The effect of GQDs on the expression of neural progenitor/stem cell markers(SRY-box transcription factor 2[SOX-2]and Nestin)and the astrocyte marker GFAP in normal and dedifferentiated Müller cells was examined using im-munofluorescence staining and Western blotting.Results The immunofluorescence staining results showed that the fluo-rescence of GFAP was extremely weak and almost invisible in Müller cells,while the fluorescence of GLAST and GS was extremely strong and predominantly appeared in the cytoplasm of Müller cells.After 24 h of GQD treatment,trace amounts of GQD fluorescence were visible in Müller cells.The amount of GQD fluorescence in the cytoplasm of Müller cells gradual-ly increased with time.The CCK-8 assay results showed that the activity of Müller cells tended to decrease with an increase in the treatment time and concentration of GQD.The statistical analysis results showed that the mean fluorescence intensity of GFAP,Nestin,and SOX-2 in Müller cells of the dedifferentiation,dedifferentiation+GQD,and GQD groups was higher than that of the control group,and the differences were statistically significant(all P＜0.05).The mean fluorescence inten-sity of GFAP in the dedifferentiation+GQD group was higher than that in the dedifferentiation group,the mean fluores-cence intensity of Nestin and SOX-2 was lower than that in the dedifferentiation group,and the differences were all statisti-cally significant(P＜0.05).The relative protein expression of GFAP,Nestin,and SOX-2 in Müller cells in the dedifferentia-tion,dedifferentiation+GQD,and GQD groups was higher than that in the control group,and the differences were statis-tically significant(all P＜0.05).The relative protein expression of GFAP in the dedifferentiation+GQD group was higher than that in the dedifferentiation group,the relative protein expression of Nestin and SOX-2 was lower than that in the dedi-fferentiation group,and the differences were statistically significant(all P＜0.05).Conclusion GQDs facilitate the re-programming of Müller cells into astrocytes.

This study aims to analyze the screening results and epidemiological characteristics of prostate cancer (PCa) among elderly males in the rural areas of Songjiang, Shanghai City, through the implementation of a preliminary prostate-specific antigen (PSA) screening based on a community-linkage model, and to explore an effective screening approach. A retrospective observational study design was employed to collect data from residents who underwent PSA screening at Songjiang Hospital affiliated to Shanghai Jiao Tong University School of Medicine, in collaboration with multiple community health service centers in Songjiang District, Shanghai City, between June 2022 and June 2024, through free clinics and annual health examinations. Prostate biopsy was recommended for individuals with total PSA (tPSA) levels >10 ng/ml and those with 4 ng/ml≤tPSA≤10 ng/ml and abnormal free-to-total PSA (f/tPSA) ratios. Clinical characteristics of detected PCa patients were analyzed. Follow-up was conducted through phone calls and home visits by family doctors, coupled with enhanced health education. The results indicated that a total of 17 198 residents participated in the screening, among which 2 234 (12.99%) had tPSA levels between 4 ng/ml and 10 ng/ml, and 257 (1.49%) had tPSA levels >10 ng/ml. Ultimately, 417 residents underwent prostate biopsy, with 171 being diagnosed with PCa, yielding a positive biopsy rate of 41.00% and a PCa detection rate of 0.99%. The predominant pathological subtype among PCa patients was adenocarcinoma (168 cases, 98.24%). Of the 146 PCa patients who received treatment, the majority were classified as intermediate or high-risk (124 cases, 84.93%). Furthermore, with the optimization of the screening model, there was a significant increase in the proportion of subsequent outpatient visits. In conclusion, the community-linkage-based PSA screening model demonstrated high effectiveness in screening for PCa among elderly males in the rural areas of Songjiang, Shanghai City. Epidemiological findings revealed that PCa patients in this region are primarily composed of intermediate and high-risk groups, highlighting the need for intensified early screening and health education.

Objective To explore the effects of graphene quantum dots(GQDs)on the reprogramming of Müller cells.Methods Müller cells were randomly divided into the control,dedifferentiation,dedifferentiation+GQD,and GQD groups.The cells in the dedifferentiation group and the dedifferentiation+GQD group were dedifferentiated using the serum-free medium containing DMEM/F12(1∶1),20 μg·L-1 EGF,10 μg·L-1 bFGF,2 × B27,and 1 × N2 for 5 d.Then,the cells in the dedifferentiation+GQD group and the GQD group were treated with 50 mg·L-1 GQDs for 72 h.The Müller cells in the control group were subjected to normal cell culture.Immunofluorescence staining was used to identify the ex-pression of Müller cell markers,including glial fibrillary acidic protein(GFAP),glutamate-aspartate transporter(GLAST),and glutamine synthetase(GS).Phalloidin staining was performed to observe whether Müller cells could take up GQDs.The effect of different concentrations of GQDs on the proliferation of Müller cells was assessed using the cell counting kit-8(CCK-8)assay.The effect of GQDs on the expression of neural progenitor/stem cell markers(SRY-box transcription factor 2[SOX-2]and Nestin)and the astrocyte marker GFAP in normal and dedifferentiated Müller cells was examined using im-munofluorescence staining and Western blotting.Results The immunofluorescence staining results showed that the fluo-rescence of GFAP was extremely weak and almost invisible in Müller cells,while the fluorescence of GLAST and GS was extremely strong and predominantly appeared in the cytoplasm of Müller cells.After 24 h of GQD treatment,trace amounts of GQD fluorescence were visible in Müller cells.The amount of GQD fluorescence in the cytoplasm of Müller cells gradual-ly increased with time.The CCK-8 assay results showed that the activity of Müller cells tended to decrease with an increase in the treatment time and concentration of GQD.The statistical analysis results showed that the mean fluorescence intensity of GFAP,Nestin,and SOX-2 in Müller cells of the dedifferentiation,dedifferentiation+GQD,and GQD groups was higher than that of the control group,and the differences were statistically significant(all P＜0.05).The mean fluorescence inten-sity of GFAP in the dedifferentiation+GQD group was higher than that in the dedifferentiation group,the mean fluores-cence intensity of Nestin and SOX-2 was lower than that in the dedifferentiation group,and the differences were all statisti-cally significant(P＜0.05).The relative protein expression of GFAP,Nestin,and SOX-2 in Müller cells in the dedifferentia-tion,dedifferentiation+GQD,and GQD groups was higher than that in the control group,and the differences were statis-tically significant(all P＜0.05).The relative protein expression of GFAP in the dedifferentiation+GQD group was higher than that in the dedifferentiation group,the relative protein expression of Nestin and SOX-2 was lower than that in the dedi-fferentiation group,and the differences were statistically significant(all P＜0.05).Conclusion GQDs facilitate the re-programming of Müller cells into astrocytes.

Objective To explore the effects of vascular risk factors on cognitive function among the elderly in community. Methods A cross-sectional study was conducted in 1 269 elderly people ( aged 65 and over) who were randomly selected from three communities. Through face-to-face interview, cognitive function was assessed by mini-mental state examination(MMSE),and blood samples were collected for labo-ratory examination. Logistic regression analysis was used to analyze the vascular risk factors affecting cogni-tive function. Results Age (( 73. 1 ± 6. 6), ( 71. 3 ± 4. 9),t=4. 603,P<0. 05),education level ( χ2=12. 727,P<0. 05),hypertension (χ2=9. 106,P<0. 05) and LDL-C (χ2=5. 157,P<0. 05) were significantly different in the elderly with or without mild cognitive impairment(MCI). After controlling age,gender and ed-ucation,the logistic regression analysis showed that hypertension(β=0. 378,P=0. 006,OR(95%CI)=1. 44 (1. 10-1. 91)),systolic blood pressure ≥140 mmHg( β=0. 350,P=0. 011,OR( 95% CI)= 1. 42( 1. 08-1. 86),1 mmHg=0. 133 kPa),and high LDL-C( β=0. 355,P=0. 014,OR(95%CI)=1. 43( 1. 08-1. 89)) were the risk factors of MCI in the elderly in the community. Hypertension alone or high LDL-C (β=0. 365, P=0. 029,OR(95%CI)=1. 44(1. 04-2. 00)) alone was risk factor for mild cognitive impairment in the eld-erly in the community. The risk of mild cognitive impairment in the elderly with hypertension and high LDL- C was 2. 00 times higher than that in the healthy elderly ( β=0. 696,P<0. 05,OR( 95%CI)= 2. 00( 1. 36-2. 97)). Conclusion Mild cognitive impairment in the elderly is closely related to hypertension and elevat-ed LDL-C levels. Multiple vascular risk factors can further increase the risk of cognitive impairment.

Objective: To explore the effects of vascular risk factors on cognitive function among the elderly in community. Methods: A cross-sectional study was conducted in 1 269 elderly people (aged 65 and over) who were randomly selected from three communities.Through face-to-face interview, cognitive function was assessed by mini-mental state examination(MMSE), and blood samples were collected for laboratory examination.Logistic regression analysis was used to analyze the vascular risk factors affecting cognitive function. Results: Age ((73.1±6.6), (71.3±4.9), t=4.603, P<0.05), education level (χ²=12.727, P<0.05), hypertension (χ²=9.106, P<0.05) and LDL-C (χ²=5.157, P<0.05) were significantly different in the elderly with or without mild cognitive impairment(MCI). After controlling age, gender and education, the logistic regression analysis showed that hypertension(β=0.378, P=0.006, OR(95%CI)=1.44(1.10-1.91)), systolic blood pressure ≥140 mmHg(β=0.350, P=0.011, OR(95%CI)=1.42(1.08-1.86), 1 mmHg=0.133 kPa), and high LDL-C(β=0.355, P=0.014, OR(95%CI)=1.43(1.08-1.89)) were the risk factors of MCI in the elderly in the community.Hypertension alone or high LDL-C (β=0.365, P=0.029, OR(95%CI)=1.44(1.04-2.00)) alone was risk factor for mild cognitive impairment in the elderly in the community.The risk of mild cognitive impairment in the elderly with hypertension and high LDL-C was 2.00 times higher than that in the healthy elderly (β=0.696, P<0.05, OR(95%CI)=2.00(1.36-2.97)). Conclusion Mild cognitive impairment in the elderly is closely related to hypertension and elevated LDL-C levels.Multiple vascular risk factors can further increase the risk of cognitive impairment.