1.Effect of fluoride exposure on endoplasmic reticulum-mitochondrial calcium transfer and apoptosis in primary nerve cells
Yongheng LU ; Shuang ZHU ; Feiyan ZHAO ; Fujun AI ; Yanjie LIU ; Yangting DONG ; Zhizhong GUAN ; Na WEI
Chinese Journal of Tissue Engineering Research 2026;30(1):111-119
BACKGROUND:Previous studies have found that neuronal damage caused by continuous excessive fluoride exposure is related to Ca2+overload,but the mechanism of Ca2+flow conversion between intracellular calcium stores and cell apoptosis damage is still unclear.OBJECTIVE:To investigate the effect of fluoride exposure on Ca2+transport channel proteins and apoptosis levels in the mitochondria-associated endoplasmic reticulum membrane of primary cultured neural cells.METHODS:Primary nerve cells of neonatal SD rats were cultured in vitro and identified by immunofluorescence staining with neuronal nucleus-specific antibody up to day 7.The nerve cells were divided into control group(containing 0 mmol/L sodium fluoride),low fluoride group(containing 0.5 mmol/L sodium fluoride),and high fluoride group(containing 1 mmol/L sodium fluoride).The cell morphological changes were observed by light microscope 24 hours after fluorine exposure.The expression levels of apoptosis-related protein BAX/BCL-2 and calcium transfer-related pathways VDAC1,GRP 75,and IP3R were detected using western blot assay.The expression levels of VDAC1,GRP 75,and IP3R mRNA were detected by RT-PCR.Ca2+levels were detected by Rhood-2AM Ca2+probe.Mitochondrial membrane potential detection kit was used to detect the change in mitochondrial membrane potential.The level of apoptosis was determined by flow cytometry and TUNEL staining.RESULTS AND CONCLUSION:(1)The purity of neurons cultured on day 7 had been determined to be over 90%,with few impurities,good growth status,and tight cell network connections,meeting the requirements of subsequent experiments.(2)Compared with the control group,growth of neural cell clusters in the low-fluoride group and the high-fluoride group increased;the processes were broken;the cell body was rounded,and the connection network between cells was destroyed.Compared with the low-fluoride group,the cell damage changes in the high-fluoride group were more obvious.(3)Compared with the control group,the protein expressions of VDAC1,GRP75,and IP3R were increased in the low-fluoride group and the high-fluoride group(P<0.05),and the ratio of apoptosis-related protein BAX/BCL-2 was increased(P<0.05).Compared with the control group,the expression of VDAC1 and GRP75 mRNA in the low-fluoride group was significantly increased(P<0.05);the expression levels of VDAC1,GRP75,and IP3R mRNA in the high-fluoride group were significantly increased(P<0.01).(4)The level of cell apoptosis increased significantly after fluoride exposure,and the high-fluoride group was significantly higher than the control and low-fluoride groups(P<0.01).(5)After fluoride exposure,the concentration of mitochondrial Ca2+in nerve cells increased significantly(P<0.05),the mitochondrial membrane potential decreased(P<0.01),and the degree of damage in the high-fluoride group was more obvious(P<0.05).The results show that fluoride exposure impairs the morphological structure of primary neural cells,resulting in upregulation of Ca2+transfer pathway protein expression between the endoplasmic reticulum and mitochondria,mitochondrial Ca2+overload,mitochondrial damage,and increased levels of apoptosis.
2.Effect of fluoride exposure on endoplasmic reticulum-mitochondrial calcium transfer and apoptosis in primary nerve cells
Yongheng LU ; Shuang ZHU ; Feiyan ZHAO ; Fujun AI ; Yanjie LIU ; Yangting DONG ; Zhizhong GUAN ; Na WEI
Chinese Journal of Tissue Engineering Research 2026;30(1):111-119
BACKGROUND:Previous studies have found that neuronal damage caused by continuous excessive fluoride exposure is related to Ca2+overload,but the mechanism of Ca2+flow conversion between intracellular calcium stores and cell apoptosis damage is still unclear.OBJECTIVE:To investigate the effect of fluoride exposure on Ca2+transport channel proteins and apoptosis levels in the mitochondria-associated endoplasmic reticulum membrane of primary cultured neural cells.METHODS:Primary nerve cells of neonatal SD rats were cultured in vitro and identified by immunofluorescence staining with neuronal nucleus-specific antibody up to day 7.The nerve cells were divided into control group(containing 0 mmol/L sodium fluoride),low fluoride group(containing 0.5 mmol/L sodium fluoride),and high fluoride group(containing 1 mmol/L sodium fluoride).The cell morphological changes were observed by light microscope 24 hours after fluorine exposure.The expression levels of apoptosis-related protein BAX/BCL-2 and calcium transfer-related pathways VDAC1,GRP 75,and IP3R were detected using western blot assay.The expression levels of VDAC1,GRP 75,and IP3R mRNA were detected by RT-PCR.Ca2+levels were detected by Rhood-2AM Ca2+probe.Mitochondrial membrane potential detection kit was used to detect the change in mitochondrial membrane potential.The level of apoptosis was determined by flow cytometry and TUNEL staining.RESULTS AND CONCLUSION:(1)The purity of neurons cultured on day 7 had been determined to be over 90%,with few impurities,good growth status,and tight cell network connections,meeting the requirements of subsequent experiments.(2)Compared with the control group,growth of neural cell clusters in the low-fluoride group and the high-fluoride group increased;the processes were broken;the cell body was rounded,and the connection network between cells was destroyed.Compared with the low-fluoride group,the cell damage changes in the high-fluoride group were more obvious.(3)Compared with the control group,the protein expressions of VDAC1,GRP75,and IP3R were increased in the low-fluoride group and the high-fluoride group(P<0.05),and the ratio of apoptosis-related protein BAX/BCL-2 was increased(P<0.05).Compared with the control group,the expression of VDAC1 and GRP75 mRNA in the low-fluoride group was significantly increased(P<0.05);the expression levels of VDAC1,GRP75,and IP3R mRNA in the high-fluoride group were significantly increased(P<0.01).(4)The level of cell apoptosis increased significantly after fluoride exposure,and the high-fluoride group was significantly higher than the control and low-fluoride groups(P<0.01).(5)After fluoride exposure,the concentration of mitochondrial Ca2+in nerve cells increased significantly(P<0.05),the mitochondrial membrane potential decreased(P<0.01),and the degree of damage in the high-fluoride group was more obvious(P<0.05).The results show that fluoride exposure impairs the morphological structure of primary neural cells,resulting in upregulation of Ca2+transfer pathway protein expression between the endoplasmic reticulum and mitochondria,mitochondrial Ca2+overload,mitochondrial damage,and increased levels of apoptosis.
3.Research Progress on the Risk of Excipients-Related Adverse Reactions in Pharmaceutical Preparations for IBD Treatment
Yanru ZHANG ; Qiuyue TU ; Ping WANG ; Zelin FENG ; Huizhen LI ; Yushan ZHU ; Haojia LIN ; Xinyue WEI ; Qinghua YI ; Hetong ZHANG ; Yueting LI ; Xiaoqin LI ; Yu WANG ; Dong XIE ; Xiaocang CAO
Medical Journal of Peking Union Medical College Hospital 2026;17(4):1135-1142
Patients with inflammatory bowel disease (IBD) require long-term pharmacotherapy. Due to the wide variety of clinically available drugs, medication safety has become increasingly concerning. As an indispensable component of pharmaceutical formulations, drug excipients may induce various adverse reactions, including rash, allergic responses, and gastrointestinal discomfort, and may even lead to severe organic injury. However, they are often overlooked in clinical practice. Therefore, identifying and managing excipient-related adverse reactions is crucial for ensuring medication safety. To address this issue, this article systematically reviews common excipients in IBD therapeutics, the underlying mechanisms of excipient-induced adverse reactions, and corresponding management strategies, aiming to enhance clinicians' awareness of excipient-related issues, improve their ability to recognize and manage such reactions, and ultimately ensure patient safety.
4.Mechanism of Shengxian Yixin Granule (升陷益心颗粒) in the Treatment of Heart Failure with Preserved Ejection Fraction Based on Macrophage-Mediated Inflammatory Response
Zhengwei DONG ; Rui YU ; Qiaozhi LI ; Huan ZHAO ; Jingjing WEI ; Genhao FAN ; Xinlu WANG ; He WANG ; Yongxia WANG ; Mingjun ZHU
Journal of Traditional Chinese Medicine 2026;67(19):2086-2094
ObjectiveTo investigate the effect and mechanism of Shengxian Yixin Granule (升陷益心颗粒, SYG) in treating heart failure with preserved ejection fraction (HFpEF). MethodsExperiment 1: Forty male C57BL/6 mice were randomly divided into control group, model group, low-dose [25 mg/(kg·d)], medium-dose [50 mg/(kg·d)], and high-dose [(75 mg/(kg·d)] SYG groups, with 8 mice per group. Except for the control group, HFpEF was induced by a high-fat diet combined with Nω-nitro-L-arginine methyl ester in drinking water for 16 weeks. After 10 weeks of modeling, treatment groups received corresponding doses of SYG by gavage, while the control group and model group received equal volume of normal saline, for 6 weeks. After 6 weeks of administration, the body weight, blood pressure including systolic blood pressure (SBP) and diastolic blood pressure (DBP), and heart weight-to-tibia length ratio (HW/TL) were recorded. Echocardiography was used to evaluate left ventricular ejection fraction (LVEF) and the ratio of early to late diastolic transmitral flow velocity (E/A). Plasma N-terminal pro-brain natriuretic peptide (NT-proBNP) and C-reactive protein (CRP) levels were measured by ELISA. The expression level of brain natriuretic peptide (BNP) in heart tissue was detected by qRT-PCR. Blood lipid levels, including low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), and total cholesterol (TC), were determined by a biochemical analyzer. Splenic proportions of M1 macrophages, M2 macrophages, T helper 17 (Th17) cells, and regulatory T (Treg) cells were analyzed by flow cytometry. Experiment 2: RAW 264.7 cells were stimulated with lipopolysaccharide (LPS) to establish an M1 macrophage polarization model, and then treated with SYG-containing serum for 24 h. The cells were divided into four groups, including blank serum group, high-dose SYG-containing serum group, LPS group, and LPS plus high-dose SYG-containing serum group. Combined with asignal transducer and activator of transcription 3 (Stat3) inhibitor for 24 h, the cells were divided into a lipopolysaccharide group, a high-dose SYG-containing serum group, an inhibitor group, and high-dose SYG-containing serum plus inhibitor group. The expression levels of inducible nitric oxide synthase (iNOS) and interleukin-1β (IL-1β) in each group were detected by qRT-PCR. The protein levels of iNOS, IL-1β, Stat3, and phosphorylated Stat3 (p-Stat3) were detected by Western Blotting. ResultsExperiment 1: Compared to the control group, the model group showed significantly decreased E/A ratio, and increased cardiac BNP expression, plasma NT-proBNP,HW/TL ratio, body weight, TC, LDL-C, SBP, and DBP, as well as shortened exhaustion distance and exhaustion time (P<0.05 or P<0.01). Compared to the model group, the E/A ratio increased in the low-, medium-, and high-dose SYG groups; cardiac BNP expression decreased in the low- and high-dose groups, and plasma NT-proBNP levels decreased in the high-dose group; the HW/TL ratio and body weight decreased, while exhaustion distance and exhaustion time increased in the medium- and high-dose groups; TG levels decreased in the low- and medium-dose groups, and LDL-C levels decreased in the medium- and high-dose groups; SBP and DBP decreased in the low-, medium-, and high-dose groups (P<0.05 or P<0.01). Compared to the low-dose SYG group, body weight decreased, and both exhaustion distance and exhaustion time increased in the medium- and high-dose groups (P<0.05 or P<0.01). Compared to the medium-dose SYG group, the exhaustion time increased in the high-dose SYG group (P<0.01). Experiment 2: In the LPS‑induced M1 macrophage polarization model, compared to the blank serum group, the LPS group showed significantly increased mRNA and protein expression of iNOS and IL‑1β, as well as the p‑Stat3/Stat3 ratio (P<0.01). Compared to the LPS group, the high‑dose SYG-containing serum plus LPS group showed significantly decreased mRNA and protein expression of iNOS and IL‑1β, as well as the p‑Stat3/Stat3 ratio (P<0.05 or P<0.01). Compared to the LPS group, the inhibitor group also showed significantly reduced these parameters (P<0.05 or P<0.01). ConclusionSYG can improve cardiac function, ventricular remodeling, exercise capacity, and lipid metabolism in HFpEF mice, while inhibiting inflammatory responses. Its mechanism may be related to the regulation of the Stat3 signaling pathway and inhibition of M1 macrophage polarization.
5.Mechanism of Shengxian Yixin Granule (升陷益心颗粒) in the Treatment of Heart Failure with Preserved Ejection Fraction Based on Macrophage-Mediated Inflammatory Response
Zhengwei DONG ; Rui YU ; Qiaozhi LI ; Huan ZHAO ; Jingjing WEI ; Genhao FAN ; Xinlu WANG ; He WANG ; Yongxia WANG ; Mingjun ZHU
Journal of Traditional Chinese Medicine 2026;67(19):2086-2094
ObjectiveTo investigate the effect and mechanism of Shengxian Yixin Granule (升陷益心颗粒, SYG) in treating heart failure with preserved ejection fraction (HFpEF). MethodsExperiment 1: Forty male C57BL/6 mice were randomly divided into control group, model group, low-dose [25 mg/(kg·d)], medium-dose [50 mg/(kg·d)], and high-dose [(75 mg/(kg·d)] SYG groups, with 8 mice per group. Except for the control group, HFpEF was induced by a high-fat diet combined with Nω-nitro-L-arginine methyl ester in drinking water for 16 weeks. After 10 weeks of modeling, treatment groups received corresponding doses of SYG by gavage, while the control group and model group received equal volume of normal saline, for 6 weeks. After 6 weeks of administration, the body weight, blood pressure including systolic blood pressure (SBP) and diastolic blood pressure (DBP), and heart weight-to-tibia length ratio (HW/TL) were recorded. Echocardiography was used to evaluate left ventricular ejection fraction (LVEF) and the ratio of early to late diastolic transmitral flow velocity (E/A). Plasma N-terminal pro-brain natriuretic peptide (NT-proBNP) and C-reactive protein (CRP) levels were measured by ELISA. The expression level of brain natriuretic peptide (BNP) in heart tissue was detected by qRT-PCR. Blood lipid levels, including low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), and total cholesterol (TC), were determined by a biochemical analyzer. Splenic proportions of M1 macrophages, M2 macrophages, T helper 17 (Th17) cells, and regulatory T (Treg) cells were analyzed by flow cytometry. Experiment 2: RAW 264.7 cells were stimulated with lipopolysaccharide (LPS) to establish an M1 macrophage polarization model, and then treated with SYG-containing serum for 24 h. The cells were divided into four groups, including blank serum group, high-dose SYG-containing serum group, LPS group, and LPS plus high-dose SYG-containing serum group. Combined with asignal transducer and activator of transcription 3 (Stat3) inhibitor for 24 h, the cells were divided into a lipopolysaccharide group, a high-dose SYG-containing serum group, an inhibitor group, and high-dose SYG-containing serum plus inhibitor group. The expression levels of inducible nitric oxide synthase (iNOS) and interleukin-1β (IL-1β) in each group were detected by qRT-PCR. The protein levels of iNOS, IL-1β, Stat3, and phosphorylated Stat3 (p-Stat3) were detected by Western Blotting. ResultsExperiment 1: Compared to the control group, the model group showed significantly decreased E/A ratio, and increased cardiac BNP expression, plasma NT-proBNP,HW/TL ratio, body weight, TC, LDL-C, SBP, and DBP, as well as shortened exhaustion distance and exhaustion time (P<0.05 or P<0.01). Compared to the model group, the E/A ratio increased in the low-, medium-, and high-dose SYG groups; cardiac BNP expression decreased in the low- and high-dose groups, and plasma NT-proBNP levels decreased in the high-dose group; the HW/TL ratio and body weight decreased, while exhaustion distance and exhaustion time increased in the medium- and high-dose groups; TG levels decreased in the low- and medium-dose groups, and LDL-C levels decreased in the medium- and high-dose groups; SBP and DBP decreased in the low-, medium-, and high-dose groups (P<0.05 or P<0.01). Compared to the low-dose SYG group, body weight decreased, and both exhaustion distance and exhaustion time increased in the medium- and high-dose groups (P<0.05 or P<0.01). Compared to the medium-dose SYG group, the exhaustion time increased in the high-dose SYG group (P<0.01). Experiment 2: In the LPS‑induced M1 macrophage polarization model, compared to the blank serum group, the LPS group showed significantly increased mRNA and protein expression of iNOS and IL‑1β, as well as the p‑Stat3/Stat3 ratio (P<0.01). Compared to the LPS group, the high‑dose SYG-containing serum plus LPS group showed significantly decreased mRNA and protein expression of iNOS and IL‑1β, as well as the p‑Stat3/Stat3 ratio (P<0.05 or P<0.01). Compared to the LPS group, the inhibitor group also showed significantly reduced these parameters (P<0.05 or P<0.01). ConclusionSYG can improve cardiac function, ventricular remodeling, exercise capacity, and lipid metabolism in HFpEF mice, while inhibiting inflammatory responses. Its mechanism may be related to the regulation of the Stat3 signaling pathway and inhibition of M1 macrophage polarization.
6.Association between serum non-HDL-C and cardiovascular disease mortality risk
Baocheng DONG ; Longfei MAO ; Haitao WEI ; Shuxia ZHU ; Xiangping TANG ; Liuting XU ; Lixiang CHAI ; Yelu RUAN ; Shunqin HUANG ; Jianbing WANG
Chinese Journal of Preventive Medicine 2025;59(10):1763-1769
To analyze the relationship between serum non-HDL-C levels and cardiovascular disease (CVD) mortality in community populations. A retrospective cohort study was conducted using the Yuecheng District Health Information Platform in Shaoxing City, Zhejiang Province. The study cohort included individuals aged 40 years or older with no prior history of CVD who underwent physical examinations at Yuecheng District healthcare institutions between January and December 2019. A total of 39 038 participants were included, including 19 085 males (48.9%) and 19 953 females (51.1%), with a mean age of (73.64±9.10) years. The mean follow-up duration was 52.3 months. During follow-up, 1 227 CVD death events occurred. The results indicated a significant overall association between non-HDL-C levels and the risk of CVD mortality, including coronary heart disease (CHD) and stroke. Cox models indicated that, using the ideal level of non-HDL-C as the reference, the hazard ratios (HRs) for risk of CVD death in the suitable level, borderline elevated level and elevated level groups were 1.24 (95% CI: 1.08-1.42), 1.57 (95% CI: 1.34-1.85) and 2.31 (95% CI: 1.87-2.86), respectively. The corresponding HRs for CHD death were 1.39 (95% CI: 1.10-1.76), 1.69 (95% CI: 1.28-2.12) and 2.53 (95% CI: 1.76-3.64), respectively. Subgroup analysis revealed significant interaction effects between non-HDL-C and sex, smoking, alcohol consumption, and diabetes (all P interaction<0.05). Sensitivity analyses confirmed that results were consistent with the primary findings regarding the association between non-HDL-C and CVD mortality risk. In conclusion, increasing non-HDL-C levels are associated with higher risks of death from cardiovascular diseases, including stroke and CHD. The risk of CVD death associated with elevated non-HDL-C is greater among males, individuals with a history of diabetes, smokers or drinkers. In the future, attention should be paid to the monitoring of non-HDL-C in community health management, and the intensive and personalized management of blood lipids in high-risk population should be strengthened.
7.Investigation on the current status of health insurance CHS-DRG/DIP performance evaluation of hospitals in China
Yutong WANG ; Xiaokun LIU ; Xueqin SUN ; Wei ZHANG ; Wenting ZHENG ; Chen XIE ; Rui DONG ; Weiguo ZHU ; Ding HAN
Chinese Journal of Hospital Administration 2025;41(1):55-62
Objective:To investigate the current status of implementing medical insurance performance evaluation in the hospitals of China under the background of China Healthcare Security Diagnosis Related Groups (CHS-DRG) and Diagnosis-Intervention Packet (DIP) payment reform, explore the perspectives and recommendations of key department leaders (e.g., health insurance, medical affairs, pricing, and performance evaluation departments) regarding health insurance performance evaluation, analyze the influencing factors in its implementation, so as to provide references for hospitals to develop and refine health insurance performance evaluation strategies.Methods:A questionnaire was designed and distributed to hospitals across 31 provincial-level administrative regions in China from December 1 to 31, 2023. The survey targeted secondary and tertiary general or specialized hospitals. The main responsible persons from four functional departments, including medical insurance, healthcare, pricing, and performance, were invited to participate in the survey. Descriptive analysis was conducted on the questionnaire data, and the chi-square test was used for differential analysis of unordered categorical variables, while the Wilcoxon rank sum test was used for differential analysis of ordered categorical variables.Results:A total of 761 valid questionnaires were collected. Most respondents were health insurance department leaders (420, 55.19%). Among them, 741 respondents reported that their hospitals used CHS-DRG or DIP payment, with 258 indicating that their hospitals had already developed and implemented health insurance performance evaluation plans. A majority (685, 90.01%) expressed support for such initiatives. Influencing factor analysis revealed that hospital type, level, scope of health insurance management departments, and payment methods might impact the implementation of health insurance performance evaluation ( P<0.05). Conclusions:Few hospitals have currently adopted health insurance performance evaluation, underscoring the urgency to establish a scientific and reasonable evaluation plan as a robust tool for internal hospital management.
8.Predictive model for intra-abdominal pressure in critically ill patients based on multiple regression and variational auto-encoders
Yi ZHANG ; Zhi-qin ZHU ; Wen-lin LI ; Dong-chu ZHAO ; Chang LIU ; Zhi-wei FAN ; Zhen WANG ; Lian-yang ZHANG ; Hao TANG
Chinese Medical Equipment Journal 2025;46(11):10-17
Objective To propose a multiple regression-variational auto-encoders(MR-VAE)model to realize precise and non-invasive prediction of intra-abdominal pressure(IAP)in critically ill patients.Methods At first,a dataset was constructed by retrospectively analysing baseline characteristics and clinical indicators of 100 critically ill patients admitted to the Intensive Care Unit of Daping Hospital of Army Medical University between 30 August 2019 and 30 March 2021.Then,a MR-VAE prediction model was developed by integrating a feedforward neural network for supervised regression onto a variational autoencoder(VAE)framework and incorporating multiple regression strategies to mitigate feature interference.Finally,the MR-VAE model had its performance evaluated by its comparison with five classical models including support vector machines(SVM),convolutional neural networks(CNN),Scikit-learn integrated model(SIM),multi-layer perceptron(MLP)and K-nearest neighbors(KNN),and its prediction accuracy verified by testing the data of 10 randomly selected patients.Results The MR-VAE model behaved the best when compared with the five classical models,with a mean squared error(MSE)of 0.207,a root mean square error(RMSE)of 0.454,a mean absolute error(MAE)of 0.361,a median absolute deviation(MAD)of 0.243,an explained variance score(EVS)of 0.814 and a R2of 0.823,which also outperformed the five models in fitting performance,convergence and final loss.In random sample testing,the MR-VAE model exhibited high consistency between predicted and actual values.Conclusion The MR-VAE model proposed can accurately predict IAP,which has great potential in reducing the repeated measurements of IAP in critically ill patients and providing new ideas for the early diagnosis and treatment of IAH.
9.The programmed death of megakaryocytes and its impact on platelet-production copacity and coagulation function in mice with sepsis
Tianzhen HUA ; Haitao WANG ; Shuting WEI ; Sen TONG ; Ning DONG ; Xiaomei ZHU ; Yongming YAO ; Wei LIU
The Journal of Practical Medicine 2025;41(15):2325-2335
Objective To investigate programmed death including necroptosis,apoptosis,autophagy,ferroptosis,and pyroptosis in bone marrow megakaryocytes of mice during sepsis and its impact on platelet production capacity and coagulation function in mice.Methods C57BL/6J mice were randomly divided into a sham operation group(sham group)and a sepsis model group(CLP group).Peripheral blood platelets and coagulation function were measured by abdominal aortic blood sampling at 24 h postoperatively in both sham and CLP groups.After the mice were sacrificed,long bones of both lower limbs were taken,and bone marrow megakaryocytes were extracted using megakaryocyte separation solution and immunomagnetic bead separation.Laser confocal microscopy was used to observe the activation of programmed death-related marker molecules in mouse bone marrow megakaryocytes.Flow cytometry was used to detect programmed death rate,platelet production phenotype,and platelet surface markers(CD41,CD42b,CD61)of megakaryocytes.Western blotting was used to detect the expression of programmed death-related proteins in megakaryocytes.Results Compared with the sham group,the CLP group showed significant decreases in the number of platelets during acute sepsis(24 h)(P<0.000 1),significant increases in platelet distri-bution width(PDW)and mean platelet volume(MPV)(P<0.01),significant prolonging of thrombin time(TT),prothrombin time(PT),and activated partial thromboplastin time(APTT)(P<0.000 1,P<0.001,P<0.01),and significant reduction in fibrinogen(Fib)(P<0.000 1).Compared with the Con/sham group,the LPS/CLP group exhibited significant increases in the platelet production phenotype of megakaryocyte,the number of PLP in the supernatant,and the expression levels of platelet surface markers(CD41,CD42b,CD61).The rates of megakaryocyte necroptosis/apoptosis,pyroptosis,and ferroptosis were significantly elevated at 24 h post-CLP surgery.Laser confo-cal microscopy showed significant activation of LC3,P-MLKL,Caspase-1,and Fe2+in megakaryocytes of mice after CLP surgery.Western blotting results revealed that the CLP group exhibited a significant increase in the activa-tion rate of necroptosis-related protein P-MLKL(P<0.001),a significant increase in the cleavage of pyroptosis-related proteins GSDMD and GSDMD-N(P<0.01,P<0.001,respectively),a significant increase in the expres-sion of ferroptosis-related protein ACSL4(P<0.01),and a significant decrease in the expression of GPX4(P<0.01)compared to the sham group.Additionally,the CLP group demonstrated significant increases in the expression of apoptosis-related protein Bax,the cleavage of autophagy-related protein LC3B-Ⅱ,and the expression of P62(P<0.05,P<0.001,P<0.001,respectively).Inhibition of apoptosis with programmed cell death inhibitors decreased platelet production function of megakaryocyte,while inhibition of necroptosis and pyroptosis had limited effects on platelet production function of megakaryocyte.Inhibition of ferroptosis and autophagy enhanced platelet production function of megakaryocyte.Conclusion Significant programmed death of megakaryocytes was observed during the acute phase of sepsis(24 h).Among those megakaryocytes,apoptosis is an important mechanism for the differentia-tion of platelet production phenotype and increased platelet production capacity of megakaryocyte.Overactive autophagy and ferroptosis in megakaryocytes lead to megakaryocyte dysfunction,which is an important mechanism for coagulation abnormalities in sepsis.
10.Association of Dietary Preferences with All-Cause and Cause-Specific Mortality: Prospective Cohort Study of 1,160,312 Adults in China.
Wen Ru SHI ; Si Tong WEI ; Qing Mei HUANG ; Huan CHEN ; Dong SHEN ; Bo Feng ZHU ; Chen MAO
Biomedical and Environmental Sciences 2025;38(9):1120-1128
OBJECTIVE:
Although dietary preferences influence chronic diseases, few studies have linked dietary preferences to mortality risk, particularly in large cohorts. To investigate the relationship between dietary preferences and mortality risk (all-cause, cancer, and cardiovascular disease [CVD]) in a large adult cohort.
METHODS:
A cohort of 1,160,312 adults (mean age 62.48 ± 9.55) from the Shenzhen Healthcare Big Data Cohort (SHBDC) was analyzed. Hazard ratios ( HRs) for mortality were estimated using the Cox proportional hazards model.
RESULTS:
The study identified 12,308 all-cause deaths, of which 3,865 (31.4%) were cancer-related and 3,576 (29.1%) were attributed to CVD. Compared with a mixed diet of meat and vegetables, a mainly meat-based diet (hazard ratio [ HR] = 1.13; 95% confidence interval [ CI]: 1.02, 1.27) associated with a higher risk of all-cause mortality, while mainly vegetarian ( HR = 0.87; 95% CI: 0.78, 0.97) was linked to a reduced risk. Furthermore, there was a stronger correlation between mortality risk and dietary preference in the > 65 age range.
CONCLUSION
A meat-based diet was associated with an increased risk of all-cause mortality, whereas a mainly vegetarian diet was linked to a reduced risk.
Humans
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China/epidemiology*
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Middle Aged
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Male
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Female
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Prospective Studies
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Aged
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Cardiovascular Diseases/mortality*
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Diet/statistics & numerical data*
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Neoplasms/mortality*
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Adult
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Cause of Death
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Food Preferences
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Proportional Hazards Models
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Mortality
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Cohort Studies

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