1.Analysis of related factors for the comorbidity of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia
Chinese Journal of School Health 2026;47(1):27-31
Objective:
To investigate the factors influencing the co-prevalence of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia, so as to provide a data foundation and theoretical basis for developing targeted intervention measures.
Methods:
In September and October 2024, a stratified cluster random sampling method was employed to select 139 102 students from 539 schools across 12 leagues/cities and 103 banners/counties in Inner Mongolia Autonomous Region. Participants who were diagnosed with allergic rhinitis by a doctor at least once within one year and had a body mass index ≥ 28 kg/m 2 were considered to have comorbid conditions.
Results:
The coprevalence rate of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia was 6.4% (8 931 cases). Lasso-Logistic regression revealed that nonboarding status, higher maternal education, consuming high protein foods ≥1 time daily, occasionally or never eating breakfast, engaging in moderate to vigorous physical activity for ≥60 minutes on fewer than half of holidays, and having been exposed to second hand smoke in person within the past seven days were associated with higher odds ratios for co-prevalence of allergic rhinitis and obesity( OR = 1.23 , 1.22-1.63, 1.20, 1.19, 1.38, 1.35); being female, higher grade level, residence in flag/county/district areas, non only child status, never having consumed a full glass of alcohol, non hypertensive status, and households without pets were associated with lower co-prevalence risks ( OR =0.65, 0.67-0.77, 0.81, 0.87, 0.73, 0.41, 0.68) (all P <0.05). The ROC curve indicated an area under the curve of 0.64 for the predictive model, demonstrating satisfactory discriminatory ability. The calibration curve showed consistency between predicted and actual occurrence probabilities.
Conclusions
The co-prevalence of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia is closely associated with demographic characteristics, dietary behaviours, and lifestyle habits. Future prevention and control strategies should prioritize these factors to implement targeted interventions.
2.Mechanisms of Jiangtang No. 3 Prescription in Alleviating Adipose Tissue Insulin Resistance in Diabetic Rats via TLR4/NF-κB/NLRP3 Signaling Pathway-mediated Inflammation
Tongxun WANG ; Lantian LIU ; Runqi LI ; Haoxiang LI ; Yi ZHAO ; Tian TIAN ; Rufeng MA ; Sihua GAO ; Dandan ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):109-117
ObjectiveTo observe the effects of Jiangtang No. 3 prescription on inflammatory pathways and insulin resistance-related indicators in rats with type 2 diabetes mellitus (T2DM), and to elucidate its molecular mechanism in combating diabetes. MethodsA T2DM rat model was established using a high-fat diet combined with intraperitoneal injection of streptozotocin (STZ). Successfully modeled rats were randomly assigned to the model group, metformin group, and low-, medium-, and high-dose Jiangtang No. 3 prescription groups, and a normal group was also set. Daily gavage was administered for 8 weeks as follows: metformin at 0.1 g·kg-1·d-1, Jiangtang No. 3 prescription granules at 1.62, 3.24, 6.48 g·kg-1·d-1 for the respective dose groups, and sterile water for the normal and model groups. Rat body weight, fasting blood glucose (FBG), oral glucose tolerance test (OGTT), and insulin tolerance test (ITT) were measured. After drug intervention, enzyme-linked immunosorbent assay (ELISA) was used to determine serum levels of total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), non-esterified fatty acids (NEFA), interleukin (IL)-1β, IL-18, and insulin (INS). Hematoxylin-eosin (HE) staining was used to observe morphological changes in adipose tissue. Real-time quantitative PCR was used to detect the mRNA expression of Toll-like receptor 4 (TLR4), nuclear factor-κB (NF-κB), NOD-like receptor protein 3 (NLRP3), Caspase-1, IL-1β, IL-18, and gasdermin D (GSDMD) in adipose tissue. Western blot was used to measure the corresponding protein expression levels. ResultsCompared with the model group, Jiangtang No. 3 prescription groups exhibited significantly increased body weight (P<0.05, P<0.01), significantly reduced FBG (P<0.05, P<0.01), significant reductions in TC, TG, NEFA, and LDL (P<0.05, P<0.01), and a significant increase in HDL (P<0.01). Serum levels of inflammatory mediators IL-1β and IL-18 were significantly decreased (P<0.01), the homeostatic model assessment of insulin resistance (HOMA-IR) index was significantly reduced (P<0.05, P<0.01), and adipose tissue pathology was improved. The protein expression levels of TLR4, NF-κB, NLRP3, Caspase-1, IL-1β, IL-18, and GSDMD were markedly decreased (P<0.05, P<0.01), and the mRNA expression levels of these indicators were also significantly downregulated (P<0.05, P<0.01). Some effects were superior to those of the positive control drug metformin, and certain indicators exhibited dose-dependent improvements. ConclusionT2DM rats display significant inflammatory responses, disordered glucose and lipid metabolism, and insulin resistance. Jiangtang No. 3 prescription effectively suppresses inflammatory mediators, improves glucose and lipid metabolism and insulin resistance, and ameliorates pathological changes in adipose tissue. Its mechanism may be related to the regulation of the TLR4/NF-κB/NLRP3 signaling pathway in visceral adipose tissue, thereby influencing downstream inflammatory mediators.
3.Application of optimized combination prediction model in the prediction of hand, foot and mouth disease
Weijie TIAN ; Qian GAO ; Kun YANG ; Zhirong ZHAO ; Jian CHEN
Journal of Public Health and Preventive Medicine 2026;37(1):58-62
Objective To explore scientific and accurate prediction methods for the incidence of hand, foot, and mouth disease in the post-pandemic era, and to address modeling challenges caused by abnormal fluctuations in case numbers from 2020 to 2023. Methods The seasonal index was used to pre-process the data. The traditional seasonal autoregressive integrated moving average (SARIMA) model, singular spectrum analysis (SSA)-ARIMA model, ARIMA-Long short-term memory (LSTM) model, and SSA-ARIMA-LSTM model were used to fit the incidence from 2013 to 2023, and the incidence of hand, foot and mouth disease in 2024 was predicted. The real data collected in 2024 were used as the test set to compare the prediction performance of the models. Results The fitting performance of the constructed models was as follows: the ARIMA model had MAE=107.50 and RMSE=144.53, the SSA-ARIMA model showed MAE=2.84 and RMSE=4.33, the ARIMA-LSTM model achieved MAE=99.46 and RMSE=131.59, and the SSA-ARIMA-LSTM model had MAE=96.35 and RMSE=132.13. In terms of prediction performance, the ARIMA model resulted in MAE=151.64 and RMSE=146.70, the SSA-ARIMA model demonstrated MAE=41.22 and RMSE=57.01, the ARIMA-LSTM model yielded MAE=220.75 and RMSE=257.89, and the SSA-ARIMA-LSTM model recorded MAE=58.83 and RMSE=72.06. Conclusion The SSA-ARIMA model has the best fitting degree and the highest prediction accuracy, and is suitable for predicting the incidence trend of hand, foot and mouth disease.
4.Causal relationship between intestinal flora and esophageal cancer: A Mendelian randomization analysis
Mengmeng WANG ; Mingjun GAO ; Siding ZHOU ; Shuyu TIAN ; Yusheng SHU ; Xiaolin WANG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(03):397-405
Objective To explore whether there is a causal relationship between intestinal flora and esophageal cancer. Methods Summary statistics of intestinal flora and esophageal cancer were obtained from the Genome-wide Association Studies (GWAS) database. Five methods, including inverse variance weighted (IVW), weighted median estimation, Mendelian randomization (MR)-Egger regression, single mode, and weighted mode, were used for analysis, with IVW as the main analysis method. Sensitivity analysis was used to evaluate the reliability of MR results. Results In the IVW method, Oxalobacteraceae [OR=1.001, 95%CI (1.000, 1.002), P=0.023], Faecalibacterium [OR=1.001, 95%CI (1.000, 1.002), P=0.028], Senegalimassilia [OR=1.002, 95%CI (1.000, 1.003), P=0.006] and Veillonella [OR=1.001, 95%CI (1.000, 1.002), P=0.018] were positively correlated with esophageal cancer, while Burkholderiales [OR=0.999, 95%CI (0.998, 1.000), P=0.002], Eubacterium oxidoreducens [OR=0.998, 95%CI (0.997, 0.999), P=0.038], Romboutsia [OR=0.999, 95%CI (0.998, 1.000), P=0.048] and Turicibacter [OR=0.998, 95%CI (0.997, 0.999), P=0.013] were negatively correlated with esophageal cancer. Sensitivity analysis showed no evidence of heterogeneity, horizontal pleiotropy and reverse causality. Conclusion Oxalobacteraceae, Faecalibacterium, Senegalimassilia and Veillonella increase the risk of esophageal cancer, while Burkholderiales, Eubacterium oxidoreducens, Romboutsia and Turicibacter decrease the risk of esophageal cancer. Further studies are needed to explore how these bacteria affect the progression of esophageal cancer.
5.Mechanism of Xixintang in Protecting Blood-brain Barrier in Alzheimer's Disease Model Rats Based on AQP4 Polarization
Siyuan JIA ; Yongchang DIWU ; Yuan TIAN ; Jie GAO ; Meirong WU ; Dengkun WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):1-10
ObjectiveThis paper aims to investigate the effects of Xixintang on aquaporin-4 (AQP4) polarity distribution, blood-brain barrier (BBB) function, and neuroinflammationin rats with Alzheimer's disease (AD), thereby revealing the potential mechanism through which this formula protects the BBB by regulating AQP4 polarization. The aim is to provide a scientific basis for clinical treatment. MethodsSixty Sprague-Dawley (SD) rats were randomly divided into a normal group, a model group, a probiotic group, a donepezil group, and an Xixintang group. The model was established by intraperitoneal injection of D-galactose (D-Gal) combined with bilateral intracerebroventricular injection of amyloid-β25-35 (Aβ25-35). The probiotic group (30.85 mg·kg-1), donepezil group (0.88 mg·kg-1), and Xixintang group (1.174 g·kg-1) received daily gavage administration, while the normal and model groups received intragastric administration with an equal volume of normal saline for one month. Cognitive ability was assessed by using the Morris water maze. BBB permeability was detected via Evans blue extravasation. The contents of interleukin-6 (IL-6), amyloid-β1-42 (Aβ1-42), and tumor necrosis factor-α (TNF-α) in the hippocampal tissues were measured by enzyme-linked immunosorbent assay (ELISA). The protein expressions of zonula occludens-1 (ZO-1), occludin, tissue inhibitor of metalloproteinase-1 (TIMP-1), matrix metalloproteinase-9 (MMP-9), and AQP4 in the hippocampal tissues were detected by western blot. The expression and co-localization levels of Aβ1-42, ionized calcium-binding adapter molecule 1 (IBA1), and AQP4/platelet endothelial cell adhesion molecule 31 (CD31) in the hippocampal region were examined by immunofluorescence. ResultsCompared with the normal group, the model group exhibited a significant decline in cognitive ability (P<0.01) and a marked increase in Evans blue extravasation in the brain (P<0.01). The expressions of ZO-1, occludin, and TIMP-1 were significantly decreased (P<0.01), while the expressions of AQP4 and MMP-9 were significantly increased (P<0.01). The co-localization level of AQP4/CD31 was significantly reduced (P<0.01), and the expressions of Aβ1-42, IL-6, TNF-α, and IBA1 were significantly elevated (P<0.01). Compared with the model group, the Xixintang group showed significant improvement in cognitive ability (P<0.01) and a significant reduction in Evans blue extravasation in the brain (P<0.01). The expressions of occludin, TIMP-1, and ZO-1 were significantly increased (P<0.05, P<0.01), while the expressions of AQP4 and MMP-9 were significantly decreased (P<0.05). The co-localization level of AQP4/CD31 was significantly enhanced (P<0.01), and the expressions of Aβ1-42, IL-6, TNF-α, and IBA1 were significantly reduced (P<0.05, P<0.01). ConclusionXixintang may improve cognitive function and alleviate AD pathology in AD model rats by regulating AQP4 polarity distribution, thereby breaking the vicious cycle of "Aβ deposition-neuroinflammation-BBB damage" and restoring the homeostasis of the microenvironment in the brain.
6.Effect of Xixintang on Colonic Mucosal Barrier and TLR4 /NF-κB p65 Signaling Pathway in AD Model Rats Induced by D-galactose Combined with Aβ25-35
Yuan TIAN ; Yongchang DIWU ; Siyuan JIA ; Jie GAO ; Meirong WU ; Dengkun WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):1-11
ObjectiveThis study aims to investigate whether Xixintang could ameliorate cognitive dysfunction in an Alzheimer's disease (AD) rat model induced by D-galactose and β-amyloid (Aβ25-35), by means of repairing the colonic mucosal barrier, regulating the Toll-like receptor 4 (TLR4)/nuclear factor-κB p65 (NF-κB p65) signaling pathway, and intervening in the pathological process mediated by the gut-brain axis. MethodsSixty specific pathogen-free (SPF) male Sprague-Dawley (SD) rats were randomly divided to five groups (n=12): A control group, a model group, a donepezil group, an Xixintang group, and a probiotic group. Except for those in the control group, rats in all other groups received daily intraperitoneal injections of D-galactose for six consecutive weeks. Subsequently, aggregated Aβ25-35 was injected stereotactically into the bilateral ventricles to establish the AD model. During the intervention periods, the rats in all groups were administered their respective drugs and normal saline by gavage. The Morris water maze test was used to assess the capacity for spatial learning and memory. Hematoxylin-eosin (HE) staining was employed to observe the histopathological changes in the colon tissues. Immunofluorescence was used to detect Aβ1-41 deposition in the hippocampal region and Mucin 2 (MUC2) expression in the colonic mucosa. Western blot was performed to measure the protein expression levels of FFAR2,TLR4, NF-κB p65, occludin (OCLN), zonula occludens-1 (ZO-1), and MUC2 in the colonic tissues. Enzyme-linked immunosorbent assay (ELISA) was used to determine the contents of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), serum amyloid A (SAA), and Aβ1-42 in the hippocampal region from the colonic tissues. The lipopolysaccharide (LPS) concentrations in colon tissues of rats were measured by using a dynamic chromogenic limulus assay. ResultsCompared with those in the control group, the rats in the model group exhibited a significantly prolonged escape latency and a markedly shorter duration in the target quadrant (P<0.01). The integrity of the colonic mucosal structure was compromised, with disordered gland arrangement and a reduced number of goblet cells. The Aβ1-42 deposition in the hippocampal region was significantly increased (P<0.01). The protein expression levels of TLR4 and NF-κB p65 in colonic tissues were significantly upregulated (P<0.01), while those of occludin and ZO-1 were downregulated (P<0.01). The contents of inflammatory factors such as IL-6, TNF-α, and SAA were significantly elevated (P<0.01), and the LPS level in the serum was markedly increased (P<0.01). In comparison to those in the model group, the rats in the Xixintang group showed a significantly shortened escape latency and a prolonged duration in the target quadrant (P<0.01). The colonic mucosal structure was ameliorated, with neat gland arrangement and an increased number of goblet cells. The Aβ1-42 deposition in the hippocampal region was reduced (P<0.01). The protein expressions of TLR4 and NF-κB p65 in the colon tissues were decreased (P<0.05,P<0.01), while the protein levels of occludin and ZO-1 were increased (P<0.01). The contents of IL-6, TNF-α, and serum amyloid A (SAA) were decreased (P<0.01), and the LPS level was reduced (P<0.01). ConclusionXixintang can significantly ameliorate cognitive dysfunction of AD model rats, by means of restoring the colonic mucosal barrier structure, reducing cerebral Aβ deposition, and suppressing peripheral and central inflammatory response. Its mechanism of action may be closely associated with the suppression of the TLR4/NF-κB signaling pathway activation, reduction of endotoxin levels, and regulation of the gut-brain axis.
7.Effect of Xixintang on Colonic Mucosal Barrier and TLR4 /NF-κB p65 Signaling Pathway in AD Model Rats Induced by D-galactose Combined with Aβ25-35
Yuan TIAN ; Yongchang DIWU ; Siyuan JIA ; Jie GAO ; Meirong WU ; Dengkun WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):1-11
ObjectiveThis study aims to investigate whether Xixintang could ameliorate cognitive dysfunction in an Alzheimer's disease (AD) rat model induced by D-galactose and β-amyloid (Aβ25-35), by means of repairing the colonic mucosal barrier, regulating the Toll-like receptor 4 (TLR4)/nuclear factor-κB p65 (NF-κB p65) signaling pathway, and intervening in the pathological process mediated by the gut-brain axis. MethodsSixty specific pathogen-free (SPF) male Sprague-Dawley (SD) rats were randomly divided to five groups (n=12): A control group, a model group, a donepezil group, an Xixintang group, and a probiotic group. Except for those in the control group, rats in all other groups received daily intraperitoneal injections of D-galactose for six consecutive weeks. Subsequently, aggregated Aβ25-35 was injected stereotactically into the bilateral ventricles to establish the AD model. During the intervention periods, the rats in all groups were administered their respective drugs and normal saline by gavage. The Morris water maze test was used to assess the capacity for spatial learning and memory. Hematoxylin-eosin (HE) staining was employed to observe the histopathological changes in the colon tissues. Immunofluorescence was used to detect Aβ1-41 deposition in the hippocampal region and Mucin 2 (MUC2) expression in the colonic mucosa. Western blot was performed to measure the protein expression levels of FFAR2,TLR4, NF-κB p65, occludin (OCLN), zonula occludens-1 (ZO-1), and MUC2 in the colonic tissues. Enzyme-linked immunosorbent assay (ELISA) was used to determine the contents of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), serum amyloid A (SAA), and Aβ1-42 in the hippocampal region from the colonic tissues. The lipopolysaccharide (LPS) concentrations in colon tissues of rats were measured by using a dynamic chromogenic limulus assay. ResultsCompared with those in the control group, the rats in the model group exhibited a significantly prolonged escape latency and a markedly shorter duration in the target quadrant (P<0.01). The integrity of the colonic mucosal structure was compromised, with disordered gland arrangement and a reduced number of goblet cells. The Aβ1-42 deposition in the hippocampal region was significantly increased (P<0.01). The protein expression levels of TLR4 and NF-κB p65 in colonic tissues were significantly upregulated (P<0.01), while those of occludin and ZO-1 were downregulated (P<0.01). The contents of inflammatory factors such as IL-6, TNF-α, and SAA were significantly elevated (P<0.01), and the LPS level in the serum was markedly increased (P<0.01). In comparison to those in the model group, the rats in the Xixintang group showed a significantly shortened escape latency and a prolonged duration in the target quadrant (P<0.01). The colonic mucosal structure was ameliorated, with neat gland arrangement and an increased number of goblet cells. The Aβ1-42 deposition in the hippocampal region was reduced (P<0.01). The protein expressions of TLR4 and NF-κB p65 in the colon tissues were decreased (P<0.05,P<0.01), while the protein levels of occludin and ZO-1 were increased (P<0.01). The contents of IL-6, TNF-α, and serum amyloid A (SAA) were decreased (P<0.01), and the LPS level was reduced (P<0.01). ConclusionXixintang can significantly ameliorate cognitive dysfunction of AD model rats, by means of restoring the colonic mucosal barrier structure, reducing cerebral Aβ deposition, and suppressing peripheral and central inflammatory response. Its mechanism of action may be closely associated with the suppression of the TLR4/NF-κB signaling pathway activation, reduction of endotoxin levels, and regulation of the gut-brain axis.
8.Mechanism of agomelatine alleviating anxiety-and depression-like behaviors in APP/PS1 transgenic mice
Tian LI ; Yuhua REN ; Yanping GAO ; Qiang SU
Chinese Journal of Tissue Engineering Research 2025;29(6):1176-1182
BACKGROUND:Agomelatine is a clinically proven treatment for neuropsychiatric symptoms,such as anxiety and depression.Furthermore,our previous study has demonstrated that agomelatine ameliorates cognitive behaviors,hippocampal synaptic plasticity,and brain pathology in a mouse model of Alzheimer's disease.However,it remains unclear whether agomelatine can improve anxiety and depression-like behaviors in Alzheimer's disease model mice. OBJECTIVE:To investigate the improving effects of agomelatine on anxiety-and depression-like behaviors in APP/PS1 transgenic mice and its underlying molecular mechanisms. METHODS:(1)Eighteen APP/PS1 transgenic mice were randomly divided into model control group(n=9)and model intervention group(n=9).Another wild-type mice were randomized into control group(n=9)and intervention group(n=9).Model intervention group and intervention group were intraperitoneally injected with 10 mg/kg agomelatine per day for 31 continuous days.Behavioral experiments,including the elevated cross maze and forced swimming tests,and mRNA sequencing of the hippocampus were then performed.(2)Mouse hippocampal neuronal cell lines(HT22)and brain microvascular endothelial cell lines(bEnd.3)were cultured and divided into four groups:blank group without any drug,drug group with 20 μmol/L agomelatine,model group with 10 μmol/L β-amyloid 1-42,and experimental group with 10 μmol/L β-amyloid 1-42+20 μmol/L agomelatine.After 24 hours of incubation,protein expression of S416p-tau and S9p-GSK3β in HT22 cells was detected by immunoblotting,and protein expression of low-density lipoprotein receptor-related protein 1 and glycosylation end-product receptor in bEnd.3 cells was detected by immunoblotting. RESULTS AND CONCLUSION:In the elevated plus maze test,the time spent in the open arms(P<0.01)and the entries into open arms(P<0.05)in the mice of model control group were evidently lower than those in the control group,whereas those were obviously increased in the model intervention group compared with the model control group(P<0.05).Forced swimming test results showed that the immobile time exhibited a marked increase in the model control group compared with the control group(P<0.05),but it was significantly decreased in the model intervention group compared with the model control group(P<0.05).Hippocampal tissue mRNA sequencing showed that agomelatine enhanced the expression of low-density lipoprotein receptor-related protein 1 in the hippocampus of APP/PS1 mice.Western blot analysis revealed that the level of S416p-tau in HT22 cells was higher in the model group than the blank group(P<0.05),while it was markedly decreased in the experimental group compared with the model group(P<0.05);the level of S9p-GSK3β in HT22 cells was higher in the drug group than the blank group(P<0.05)as well as higher in the experimental group than the model group(P<0.05).Moreover,the expression of low-density lipoprotein receptor-related protein 1 in bEnd.3 cells was higher in the experimental group than the model group(P<0.05).To conclude,agomelatine can alleviate anxiety-and depression-like behaviors in Alzheimer's disease mice by promoting the clearance of β-amyloid and phosphorylated tau.
9.Stress analysis of computer aided design/computer aided manufacture post-core materials with different elastic moduli
Liangwei XU ; Xitian TIAN ; Lin CHEN ; Hongyan GAO ; Xian ZHU ; Guican YANG ; Yinghao CHEN
Chinese Journal of Tissue Engineering Research 2025;29(10):2061-2066
BACKGROUND:Post and core restoration is a common choice for tooth defects,but the repair effects of various post and core materials are different. OBJECTIVE:To evaluate the stress distribution at the post and core,tooth root,and bonding agent site of post and core models made of different elastic modulus post and core materials using finite element method. METHODS:A three-dimensional root canal treated maxillary central incisor model was built using three-dimensional modeling software,which was restored with a full ceramic crown.The post and core materials in the restoration used nanoceramic resin(elastic modulus=12.8 GPa),composite resin(elastic modulus=16 GPa),hybrid ceramic(elastic modulus=34.7 GPa),glass ceramic(elastic modulus=95 GPa),titanium alloy(elastic modulus=112 GPa),and zirconia(elastic modulus=209.3 GPa).The model was fixed in cortical bone.A 100 N concentrated force of 45° from the long axis of the tooth was applied to 1/3 of the crown and tongue side of the central incisor.The stress distribution of the post and core,dentin,and tooth-root bonding agent in the model was repaired by the maximum principal stress criterion. RESULTS AND CONCLUSION:(1)When the post and core materials with higher elastic modulus was used,the post-core stress in the repair model was more concentrated.When the elastic modulus of the post and core materials(nanoceramic resin and composite resin)was close to dentin,the stress distribution of the post and core was more uniform.The stress distribution of dentin in all restoration models was similar regardless of post and core materials.When the post and core with higher elastic modulus was used,more stress concentration was shown at the post and root bonding agent in the repair model.(2)The maximum stress values at the post and core,tooth root,and the bonding agent site of post and tooth root in the nanoceramic resin model were 31.00,33.21,and 0.51 MPa,respectively.The maximum stress values at the post and core,tooth root,and the bonding agent between the post and tooth root in the composite resin model were 36.84,33.14,and 0.59 MPa,respectively.In the mixed ceramic model,the maximum stress values at the post and core,tooth root,and the bonding agent between the post and tooth root were 64.05,32.83,and 1.00 MPa,respectively.In the glass ceramic model,the maximum stress values at the post and core,tooth root,and the bonding agent between the post and tooth root were 112.30,32.69,and 1.73 MPa,respectively.In the titanium alloy model,the maximum stress values of the post and core,tooth root,and the bonding agent between the post and tooth root were 120.00,32.17,and 1.86 MPa,respectively.In the zirconia model,the maximum stress values of the post and core,tooth root,and the bonding agent between the post and tooth root were 148.80,31.85,and 2.28 MPa,respectively.(3)The higher the elastic modulus of the post and core material,the higher the maximum stress at the post and core during restoration.The elastic modulus of the post and core material had no significant effect on the maximum stress of the dental bonding agent and dentin.
10.Compound Xishu Granules Inhibit Proliferation of Hepatocellular Carcinoma Cells by Regulating Ferroptosis
Yuan TIAN ; Yuxi WANG ; Zhen LIU ; Yuncheng MA ; Hongyu ZHU ; Xiaozhu WANG ; Qian LI ; Jian GAO ; Weiling WANG ; Wenhui XU ; Ting WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(2):37-45
ObjectiveTo study the mechanism of compound Xishu granules (CXG) in inhibiting the proliferation of hepatocellular carcinoma cells by regulating ferroptosis. MethodsThe transplanted tumor model of human Huh7 was established with nude mice and the successfully modeled mice were randomized into model, Fufang Banmao (0.21 g·kg-1), low-dose (1.87 g·kg-1) CXG, medium-dose (3.74 g·kg-1) CXG, and high-dose (7.49 g·kg-1) CXG groups. Mice were administrated with drinking water or CXG for 28 days, and the body weight and tumor volume were measured every 4 days. Hematoxylin-eosin staining was employed to observe the histopathological changes of tumors. The cell-counting kit-8 (CCK-8) was used to examine the survival rate of Huh7 cells treated with different concentrations (0, 31.25, 62.5, 125, 250, 500, 1 000 mg·L-1) of CXG for 24 h and 48 h. CA-AM, DCFH-DA, and C11-BODIPY581/591 fluorescent probes were used to determine the intracellular levels of ferrous ion (Fe2+), reactive oxygen species (ROS), and lipid peroxide (LPO), respectively. The colorimetric method was employed to measure the levels of glutathione (GSH) and superoxide dismutase (SOD). Western blot was employed to determine the protein levels of glutathione peroxidase 4 (GPX4), transferrin receptor 1 (TFR1), and ferritin heavy chain 1 (FTH1), respectively. ResultsIn the animal experiment, compared with the model group, the drug treatment groups showed reductions in the tumor volume from day 12 (P<0.01). After treatment, the Fufang Banmao and low-, medium-, and high-dose CXG groups had lower tumor volume, relative tumor volume, and tumor weight than the model group (P<0.05), with tumor inhibition rates of 48.99%, 79.93%, 91.38%, and 97.36%, respectively. Moreover, the CXG groups had lower tumor volume and relative tumor volume (P<0.05 in all the three dose groups) and lower tumor weight (P<0.05 in medium-dose and high-dose groups) than the Fufang Banmao group. Compared with the model group, the drug treatment groups showed reduced number of tumor cells, necrotic foci with karyopyknosis, nuclear fragmentation, and nucleolysis, and the high-dose CXG group showed an increase in the proportion of interstitial fibroblasts. In the cell experiment, compared with the blank group, CXG reduced the survival rate of Huh7 cells in a dose-dependent manner after incubation for 24 h and 48 h (P<0.05). Compared with the blank group, the RSL3 group and the low-, medium-, and high-dose CXG groups showed a decrease in the relative fluorescence intensity of CA-AM and increases in the fluorescence intensity of DCFH-DA and fluorescence ratio of C11-BODIPY581/591, which indicated elevations in the levels of Fe2+ (P<0.01), ROS (P<0.05), and LPO (P<0.01), respectively. Compared with the blank group, the RSL3 and low-, medium-, and high-dose CXG groups showed lowered levels of GSH and SOD (P<0.05). In addition, the RSL3 group and the medium- and high-dose CXG groups showed down-regulated expression of GPX4 and FTH1 (P<0.05), and the low- and high-dose CXG groups presented up-regulated expression of TFR1 (P<0.05). ConclusionCXG suppresses the proliferation of hepatocellular carcinoma cells by inducing ferroptosis via downregulating the GSH-GPX4 signaling axis and increasing intracellular Fe2+and LPO levels.


Result Analysis
Print
Save
E-mail