1.Analysis of oral health status and knowledge, attitude and practice intervention effects among third grade primary school students in Guizhou Province
Chinese Journal of School Health 2026;47(7):945-949
Objective:
To evaluate oral health status and knowledge, attitude and practice (KAP) among third grade primary school students after the implementation of the Comprehensive Intervention Project for Childhood Oral Diseases in Guizhou Province, so as to provide evidence for program optimization.
Methods:
Using a multistage cluster sampling method, oral examinations and questionnaire surveys were conducted among third grade primary school students in schools covered by the Comprehensive Intervention Project for Childhood Oral Diseases in Guizhou Province (intervention group, n =1 030) and schools not covered by the program (control group, n =1 130) in November 2023. A follow up survey was conducted one year after the project s implementation (December 2024) to evaluate the differences in oral health status and KAP between the two groups. The t-test and χ 2 test were used to compare means and rates, respectively.
Results:
One year after implementation, the permanent caries prevalence, caries filling ratio, mean dmft/DMFT, and mean simplified debris index in the intervention group were 33.3%, 22.3 %, 3.44±3.10, 0.77±0.56, which were all better than those in the control group (39.8%, 17.3%, 3.89±2.85, and 0.87± 0.63 ) ( χ 2/ t =9.87, 8.78, -2.59, -3.91,all P <0.05). After intervention, the levels of oral health knowledge, attitude and behaviors in the intervention group were better than those in the control group ( Z =7.69, 2.35, 2.10, all P <0.05). Except for the item "fluoride has no protective effect on teeth", the correct response rates of other oral health knowledge items in the intervention group were higher than those in the control group ( χ 2=3.92-163.94, all P <0.05). The reported rates of tooth brushing related behaviors and sugary beverage consumption were higher in the intervention group than in the control group ( χ 2=4.02-11.42,all P <0.05).
Conclusions
The Comprehensive Intervention Project for Childhood Oral Diseases improves children s oral health status, oral health knowledge, and some oral health behaviors, but has limited effects on some behaviors and oral health attitudes. Future efforts should focus on the factors influencing the transformation of children s oral health attitudes and behaviors, along with strengthening long term follow up evaluations.
2.Graphene-mediated Far-infrared Therapy Enhances Anti-non-small Cell Lung Cancer Effects of Panax quinquefolium Saponins via cGAS/STING Signaling Pathway
Huifang ZANG ; Zikai GENG ; Yan GAO ; Lu LIU ; Yifei WANG ; Bonian ZHAO ; Jing LYU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(21):131-145
ObjectiveTo investigate whether the inhibitory effect of Panax quinquefolium saponins (PQS) on non-small cell lung cancer (NSCLC) is enhanced under graphene-mediated far-infrared therapy (GFIR), and to analyze its relationships with mitochondrial dysfunction, mitochondrial DNA (mtDNA) leakage, and the activation of cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes (STING) signaling pathways. MethodsIn the cell experiments, the cell-counting kit 8 (CCK-8) was employed to assess the inhibitory effects of PQS alone or in combination with GFIR (PQS+GFIR) on A549 cell viability. The scratch assay and the colony formation assay were adopted to evaluate cell migration and colony formation capabilities, respectively. Flow cytometry was employed to assess apoptosis, mitochondrial membrane potential, and reactive oxygen species (ROS) levels. Immunofluorescence (IF) assay was performed to assess mitochondrial localization. Real-time polymerase China reaction(PCR) was used to detect mitochondrial DNA (mtDNA) leakage. A STING knockdown cell model was established by transfecting cells with small interfering RNA (siRNA), and the knockdown efficiency was assessed by Real-time PCR and Western blot. The cell viability and apoptosis following gene knockdown were assessed through the CCK-8 assay and flow cytometry. In the animal experiments, an allogeneic xenograft mouse model was established with Lewis lung cancer cells. Mice were randomized into a control group, a model group, a cisplatin group, a low-dose PQS (PQS-Low, 90 mg·kg-1) group, a high-dose PQS (PQS-High, 180 mg·kg-1) group, a low-dose PQS combined with GFIR (PQS-Low+GFIR, 90 mg·kg-1) group, and a high-dose PQS combined with GFIR (PQS-High+GFIR, 180 mg·kg-1) group. Treatment lasted for 14 days, and the fluorescence intensity was monitored at the tumor site by small-animal in vivo imaging during the treatment period. Flow cytometry was utilized to determine the proportions of T-lymphocyte subsets, B-lymphocyte levels, and peripheral blood NK cell levels in the spleens of mice. Immunohistochemical (IHC) staining was performed to assess the infiltration of CD3+, CD4+, and CD8+ T-lymphocytes in the tumor tissue. Enzyme-linked immunosorbent assay (ELISA) was conducted to measure the levels of interferon-α (IFN-α), interferon-β (IFN-β), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in mouse tumors. The mRNA levels of cGAS, STING, TANK-binding kinase 1 (TBK1), interferon regulatory factor 3 (IRF3), interferon beta 1 (IFNB1), and nuclear factor κB p65 (NF-κB p65) were determined by Real-time PCR. The protein levels of cGAS, STING, p-STING, TBK1, p-TBK1, IRF3, p-IRF3, NF-κB p65, and p-NF-κB p65 were quantified via Western blot. ResultsThe cell experiment results showed that compared with the control group, PQS inhibited the viability and migration of A549 cells, promoted apoptosis, affected mitochondrial localization, reduced mitochondrial membrane potential, increased the ROS level, and promoted mtDNA leakage. Following STING knockdown, the reductions in cell viability and the apoptosis-inducing effects caused by PQS were partially reversed (P<0.05, P<0.01). Compared with the PQS group, the PQS+GFIR group showed inhibited A549 cell migration and colony formation, exacerbated apoptosis, downregulated mitochondrial membrane potential, elevated ROS levels, and promoted mtDNA leakage. After STING knockdown, the reduced A549 cell viability and abnormal apoptosis phenotype were further reversed (P<0.05, P<0.01). The animal experiment results showed that compared with the control group, the model group mice exhibited reduced proportions of T-lymphocyte subsets, CD19+ B-lymphocyte levels, and peripheral blood NK1.1+ cell levels in the spleen (P<0.01). Compared with the model group, the PQS group showed increased immune cell parameters in mice (P<0.05, P<0.01). Compared with the PQS group, the PQS+GFIR group exhibited enhanced levels of the aforementioned indicators (P<0.01). Compared with the model group, the PQS group showed significantly reduced fluorescence intensity in transplanted tumors, significantly upregulated expression of CD3 and CD4 in the tumor tissue, elevated levels of IFN-α and IL-6 in tumors, and upregulated mRNA levels of cGAS, STING, TBK1, IRF3, IFNB1, and NF-κB p65 as well as upregulated protein level of cGAS and phosphorylation level of STING in tumors (P<0.05, P<0.01). Compared with the PQS group, the PQS+GFIR group demonstrated further reduced tumor fluorescence intensity, elevated levels of CD3, CD4, and CD8 as well as cytokine levels in tumor tissue, and upregulated mRNA levels of genes related to the cGAS/STING pathway as well as upregulated protein level of cGAS and phosphorylation levels of STING, TBK1, IRF3, and NF-κB p65 (P<0.05, P<0.01) ConclusionGFIR enhances the inhibitory effect of PQS on NSCLC, potentially through mitochondrial dysfunction, mtDNA leakage, and activation of the cGAS/STING signaling pathway.
3.Graphene-mediated Far-infrared Therapy Enhances Anti-non-small Cell Lung Cancer Effects of Panax quinquefolium Saponins via cGAS/STING Signaling Pathway
Huifang ZANG ; Zikai GENG ; Yan GAO ; Lu LIU ; Yifei WANG ; Bonian ZHAO ; Jing LYU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(21):131-145
ObjectiveTo investigate whether the inhibitory effect of Panax quinquefolium saponins (PQS) on non-small cell lung cancer (NSCLC) is enhanced under graphene-mediated far-infrared therapy (GFIR), and to analyze its relationships with mitochondrial dysfunction, mitochondrial DNA (mtDNA) leakage, and the activation of cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes (STING) signaling pathways. MethodsIn the cell experiments, the cell-counting kit 8 (CCK-8) was employed to assess the inhibitory effects of PQS alone or in combination with GFIR (PQS+GFIR) on A549 cell viability. The scratch assay and the colony formation assay were adopted to evaluate cell migration and colony formation capabilities, respectively. Flow cytometry was employed to assess apoptosis, mitochondrial membrane potential, and reactive oxygen species (ROS) levels. Immunofluorescence (IF) assay was performed to assess mitochondrial localization. Real-time polymerase China reaction(PCR) was used to detect mitochondrial DNA (mtDNA) leakage. A STING knockdown cell model was established by transfecting cells with small interfering RNA (siRNA), and the knockdown efficiency was assessed by Real-time PCR and Western blot. The cell viability and apoptosis following gene knockdown were assessed through the CCK-8 assay and flow cytometry. In the animal experiments, an allogeneic xenograft mouse model was established with Lewis lung cancer cells. Mice were randomized into a control group, a model group, a cisplatin group, a low-dose PQS (PQS-Low, 90 mg·kg-1) group, a high-dose PQS (PQS-High, 180 mg·kg-1) group, a low-dose PQS combined with GFIR (PQS-Low+GFIR, 90 mg·kg-1) group, and a high-dose PQS combined with GFIR (PQS-High+GFIR, 180 mg·kg-1) group. Treatment lasted for 14 days, and the fluorescence intensity was monitored at the tumor site by small-animal in vivo imaging during the treatment period. Flow cytometry was utilized to determine the proportions of T-lymphocyte subsets, B-lymphocyte levels, and peripheral blood NK cell levels in the spleens of mice. Immunohistochemical (IHC) staining was performed to assess the infiltration of CD3+, CD4+, and CD8+ T-lymphocytes in the tumor tissue. Enzyme-linked immunosorbent assay (ELISA) was conducted to measure the levels of interferon-α (IFN-α), interferon-β (IFN-β), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in mouse tumors. The mRNA levels of cGAS, STING, TANK-binding kinase 1 (TBK1), interferon regulatory factor 3 (IRF3), interferon beta 1 (IFNB1), and nuclear factor κB p65 (NF-κB p65) were determined by Real-time PCR. The protein levels of cGAS, STING, p-STING, TBK1, p-TBK1, IRF3, p-IRF3, NF-κB p65, and p-NF-κB p65 were quantified via Western blot. ResultsThe cell experiment results showed that compared with the control group, PQS inhibited the viability and migration of A549 cells, promoted apoptosis, affected mitochondrial localization, reduced mitochondrial membrane potential, increased the ROS level, and promoted mtDNA leakage. Following STING knockdown, the reductions in cell viability and the apoptosis-inducing effects caused by PQS were partially reversed (P<0.05, P<0.01). Compared with the PQS group, the PQS+GFIR group showed inhibited A549 cell migration and colony formation, exacerbated apoptosis, downregulated mitochondrial membrane potential, elevated ROS levels, and promoted mtDNA leakage. After STING knockdown, the reduced A549 cell viability and abnormal apoptosis phenotype were further reversed (P<0.05, P<0.01). The animal experiment results showed that compared with the control group, the model group mice exhibited reduced proportions of T-lymphocyte subsets, CD19+ B-lymphocyte levels, and peripheral blood NK1.1+ cell levels in the spleen (P<0.01). Compared with the model group, the PQS group showed increased immune cell parameters in mice (P<0.05, P<0.01). Compared with the PQS group, the PQS+GFIR group exhibited enhanced levels of the aforementioned indicators (P<0.01). Compared with the model group, the PQS group showed significantly reduced fluorescence intensity in transplanted tumors, significantly upregulated expression of CD3 and CD4 in the tumor tissue, elevated levels of IFN-α and IL-6 in tumors, and upregulated mRNA levels of cGAS, STING, TBK1, IRF3, IFNB1, and NF-κB p65 as well as upregulated protein level of cGAS and phosphorylation level of STING in tumors (P<0.05, P<0.01). Compared with the PQS group, the PQS+GFIR group demonstrated further reduced tumor fluorescence intensity, elevated levels of CD3, CD4, and CD8 as well as cytokine levels in tumor tissue, and upregulated mRNA levels of genes related to the cGAS/STING pathway as well as upregulated protein level of cGAS and phosphorylation levels of STING, TBK1, IRF3, and NF-κB p65 (P<0.05, P<0.01) ConclusionGFIR enhances the inhibitory effect of PQS on NSCLC, potentially through mitochondrial dysfunction, mtDNA leakage, and activation of the cGAS/STING signaling pathway.
4.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
5.Treatment of Diabetic Kidney Disease with Traditional Chinese Medicine Based on Epithelial-to-mesenchymal Transition-related Pathways: A Review
Jintao SHI ; Zhiyi ZHANG ; Yushan GAO ; Baicun GUO ; Yifei HU ; Jiarui HAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(24):288-298
Diabetic kidney disease (DKD) stands as one of the most prevalent microvascular complications of diabetes,noted for its concealed onset and tendency to evolve into end-stage renal disease,profoundly impacting patients' life expectancy and quality of life. Epithelial-to-mesenchymal transition (EMT) is a central pathological process in the initiation and progression of DKD,facilitating disease advancement and renal fibrosis,thus representing a crucial focus of research into the pathological mechanisms of DKD. EMT is driven by the abnormal activation of signaling pathways,including transforming growth factor-β (TGF-β)/Smad,secreted glycoprotein/β-catenin,Notch,tumor necrosis factor-α (TNF-α)/nuclear factor-κB (NF-κB),and phosphatidylinositol-3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR),leading to renal cellular injury and subsequently accelerating renal fibrosis and the progression of DKD. Traditional Chinese medicine (TCM),characterized by its multi-target and multi-pathway therapeutic approach,demonstrates unique advantages in addressing DKD and EMT. Recent research has shown that active ingredients in TCM,including glycosides,flavonoids,and polyphenols,as well as TCM formulas,can precisely target these relevant signaling pathways,effectively inhibiting cellular injury in DKD and intervening in the EMT process. These findings not only underscore the potential of TCM monomers and formulas in treating DKD and EMT but also pave new directions for research in this field within TCM. This paper systematically reviewed the signaling pathways associated with EMT and provided an in-depth analysis of the research achievements and underlying mechanisms of TCM monomers and formulas in treating DKD and intervening in EMT,aiming to offer new insights and directions for TCM in the treatment of DKD and research on EMT,thereby further promoting the modernization and development of TCM.
6.Mechanism of core acupoints of acupuncture for polycystic ovary syndrome based on data mining and network acupuncture medicine.
Xinye GAO ; Qianhan LIU ; Yifei WANG ; Tingyuan YANG ; Wenci ZHANG ; Can LIU ; Shuxiu ZHU ; Lei ZHANG
Chinese Acupuncture & Moxibustion 2025;45(12):1846-1858
OBJECTIVE:
To analyze the acupoint selection patterns and core prescriptions of acupuncture for polycystic ovary syndrome (PCOS) using data mining, and to explore the molecular mechanisms of core acupoints through network acupuncture medicine.
METHODS:
The randomized controlled trials (RCTs) on acupuncture for PCOS published from January 1, 2004 to July 21, 2024 were retrieved from CNKI, VIP, Wanfang, PubMed, and Web of Science databases. R software (version 4.4.0) was used for acupoint frequency and association rule analysis to identify core acupoint prescriptions. Potential targets were predicted via the STITCH and Swiss Target Prediction databases, and a "core prescription-active compounds-targets- PCOS" network was constructed. Cytoscape 3.7.1 was applied to build protein-protein interaction (PPI) networks of potential targets of core acupoint prescriptions. Key therapeutic targets were subjected to gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analyses using the DAVID and Microbioinformatics platforms.
RESULTS:
A total of 176 RCTs were included, covering 208 prescriptions and 89 acupoints. The five most frequently used acupoints were Guanyuan (CV4), Sanyinjiao (SP6), Zigong (EX-CA1), Zusanli (ST36) and Zhongji (CV3). Association rule analysis yielded 13 core acupoint combinations, with Guanyuan (CV4), Sanyinjiao (SP6), Zigong (EX-CA1) and Zusanli (ST36) as the core prescription. Twenty-seven active compounds were involved, with 852 potential therapeutic targets, among which 208 targets overlapped with PCOS-related targets. Network acupuncture medicine analysis suggested that the core prescription may act through targets such as estrogen receptor 1 (ESR1), proto-oncogene tyrosine-protein kinase Src (SRC), signal transducer and activator of transcription 3 (STAT3), peroxisome proliferator-activated receptor gamma (PPARG), and RAC-alpha serine/threonine-protein kinase (AKT1). GO and KEGG analyses indicated that the main pathways included the hypoxia-inducible factor 1 (HIF-1) signaling pathway, phosphatidylinositol 3-kinase-protein kinase B (PI3K-AKT) signaling pathway, and advanced glycation end products-receptor for advanced glycation end products (AGE-RAGE) signaling pathway, involving processes such as signal transduction, receptor complex formation, and cytokine activity.
CONCLUSION
The core acupoint prescription for PCOS might exert therapeutic effects through multiple targets and pathways, providing a theoretical basis for mechanistic research on acupoint prescriptions.
Humans
;
Acupuncture Therapy
;
Data Mining
;
Acupuncture Points
;
Polycystic Ovary Syndrome/metabolism*
;
Female
;
Protein Interaction Maps
;
Randomized Controlled Trials as Topic
7.Summary of the 2024 report on gastroenterology and digestive endoscopy in China.
Zheran CHEN ; Yusi XU ; Lei XIN ; Yifei SONG ; Jinfang XU ; Chu CHU ; Chuting YU ; Ye GAO ; Xudong MA ; Zhaoshen LI ; Luowei WANG
Chinese Medical Journal 2025;138(21):2693-2701
BACKGROUND:
China has made significant progress in medical accessibility and quality over the past decades, and quality improvements in gastroenterology and digestive endoscopy have been consistent. The study aimed to describe the status quo of gastroenterology and digestive endoscopy in the Chinese mainland based on the data from the National Clinical Improvement System (NCIS) and the Hospital Quality Monitoring System (HQMS).
METHODS:
Data were extracted from the NCIS and the HQMS. Data analysis included general information from the Department of Gastroenterology and Endoscopy centers, management of inpatients and outpatients, and annual volume and quality indicators of digestive endoscopy. Acute pancreatitis, gastrointestinal bleeding, inflammatory bowel disease, and cirrhosis were identified as priority diseases and were subjected to detailed analysis.
RESULTS:
Data from 4620 and 7074 hospitals were extracted from the NCIS and HQMS, respectively. In 2023, 9.6 gastroenterologists, 6.7 endoscopists, and 37.3 gastroenterology beds per hospital nationwide were observed, achieving 19,252.4 outpatient visits, 1615.2 hospitalizations (97.0 for acute pancreatitis, 146.1 for gastrointestinal bleeding, 40.2 for inflammatory bowel disease, and 111.4 for cirrhosis), and 9432.7 digestive endoscopic procedures per hospital. Overall, the quality of practice improved significantly. The proportion of early cancer among gastrointestinal cancers increased from 11.1% in 2015 to 23.4% in 2023, and the adenoma detection rate during colonoscopy increased from 19.3% in 2019 to 26.9% in 2023. Regarding priority diseases, hospitalizations increased, and 31-day unplanned readmission rates decreased between 2019 and 2023. The median hospitalization costs and median proportion of medication costs decreased for acute pancreatitis, gastrointestinal bleeding, and cirrhosis. However, it increased for inflammatory bowel disease.
CONCLUSION
This report evaluates the status quo and development of gastroenterology and digestive endoscopy in the Chinese mainland, providing guidance for future quality improvements.
Humans
;
China
;
Gastroenterology/statistics & numerical data*
;
Gastrointestinal Hemorrhage
;
Endoscopy, Gastrointestinal/statistics & numerical data*
;
Endoscopy, Digestive System/statistics & numerical data*
8.Mechanistic study on low expression of Ace2 gene activated senescence-related signals and promoted the progression of silicotic fibrosis in mice
Yifei BAI ; Zejin LI ; Xuliang AN ; Wenchen CAI ; Xuemin GAO ; Yaqian LI
Chinese Journal of Industrial Hygiene and Occupational Diseases 2025;43(5):344-352
Objective:To observe the effects of low expressed Angiotensin-converting enzyme 2 ( Ace2) gene on senescence related signals of alveolar type Ⅱ epithelial cells in silicotic mice. Methods:In March 2022, 20 8-12W SPF male wild-type C57BL/6 mice and 20 Ace2 gene knockdown mice (Ace2 +/-, C57BL/6 background) were randomly divided into wild-type control group, Ace2 low expression group, wild-type silicosis group, Ace2 low expression silicosis group, with 10 mice in each group. In vitro MLE-12 cells were divided into control group, MLN-4760 (ACE2 inhibitor) group, SiO 2 group and SiO 2+MLN-4760 group. The expression of ACE2, collagen I (Col I), fibronectin 1 (Fn1), α-smooth muscle actin (α-SMA), phosphorylation-ataxia telangiectasia-mutated serine/threonine kinase (p-ATM), phosphorylation-ATM Rad3-related kinase (p-ATR), p-p53, p21 and p16 in mice and MLE-12 cells were detected by Western blotting. The expression and location of β-galactosidase were detected by immunofluorescence, β-galactosidase (SA-β-Gal) staining were used to detect the senescence of MLE-12 cells. Results:HE and VG staining results showed that typical silicon nodules with collagen deposition were formed in the lung of wild-type silicotic mice and Ace2 low expression silicotic mice. Immunofluorescence staining results showed that β-galactosidase was mainly located in alveolar type Ⅱ epithelial cells. Western blot results showed that, compared with wild-type silicosis group, the expression of Col I, α-SMA, p-ATM, p-ATR, p-p53, p21 and p16 in Ace2 low expression silicosis group were significantly up-regulated by 540.71%、26.58%、336.84%、139.58%、152.78%、120.10% and 994.63% ( P<0.05). In MLE-12 cells, results of western blot showed that compared with SiO 2 group, the expression levels of p-ATM, p-ATR, p-p53, p21 and p16 in SiO 2+MLN-4760 group were significantly up-regulated by 168.71%、750.78%、149.51%、554.26% and 254.07% ( P<0.05). Immunofluorescence staining results showed that compared with SiO 2 group, β-galactosidase positive cells were strongly up-regulated in SiO 2+MLN-4760 group, and SA-β-Gal staining results showed that compared with SiO 2 group, the number of senescent cells in SiO 2+MLN-4760 group increased by 63.18% ( P<0.05) . Conclusion:Low expression of Ace2 gene activated senescence related signals of alveolar type Ⅱ epithelial cells and promoted the progression of silicotic fibrosis in mice.
9.In vitro inhibitory and clinical application effect of Sophora flavescens,Philo-dendron extracts and copper sulfate on Trichomonas gallinae
Yifei LONG ; Liangming KUANG ; Xingchen ZHAO ; Ming GAO ; Yihong SUN ; Zifan WANG ; Shuo ZHOU ; Wei WANG
Chinese Journal of Veterinary Science 2025;45(9):1918-1926
Aimed to find a safe and effective drug to replace nitroimidazole drugs in aquaculture pro-duction for the prevention and treatment of Trichomoniasis in pigeons,which can improve the eco-nomic benefits of meat pigeon breeding and ensure food safety.Firstly,Trichomonas was isolated and cultured from the crop of diseased pigeons and identified.After stable passage,a quantitative method for in vitro detection of Trichomonas was established by combining an automated cell counter and quantitative real-time PCR technology.To prepared the drug,powders of Sophora fla-vescent and Philodendron were made into herbal water extracts(SFPA)and mixed with copper sulfate(CS)solution.Then added the drug to the culture medium of Trichomonas to determine the effective concentration of it.A total of 135 pairs each of Silver King and Mimas breeding pigeons in the same laying period were selected and randomly divided into three groups,with 6 replicates in each group and 15 pairs of breeding pigeons in each replicate.Four days before brooding,the three groups were fed with 200 mL of pure water,0.5 g/L metronidazole(MDZ)solution,and a mixed solution of 30 g/L SFPA and 0.5 g/L CS,respectively.The feeding experiment lasted for 26 d.Results showed that the mixed solution of SFPA and CS had a significant killing effect on Trichomonas in vitro(P<0.05).Feeding the drug to breeding pigeons significantly reduced the in-fection rate of breeding pigeons by Trichomonas(P<0.05).The drug had no significant effect on the serum biochemical indexes,antioxidant properties,immunoglobulin levels of breeding pigeons,the average cage weight,immune organ indexes,meat quality and slaughter performance of squabs(P>0.05).The results suggested that adding SFPA and CS to pigeons can effectively prevent and treat Trichomoniasis and improve production performance.It can replace nitroimidazole drugs without affecting the immune level of breeding pigeons and the weight,immune level,slaughter performance and meat quality of squabs,thereby reduce drug residues in poultry products and en-hance the food safety.
10.In vitro inhibitory and clinical application effect of Sophora flavescens,Philo-dendron extracts and copper sulfate on Trichomonas gallinae
Yifei LONG ; Liangming KUANG ; Xingchen ZHAO ; Ming GAO ; Yihong SUN ; Zifan WANG ; Shuo ZHOU ; Wei WANG
Chinese Journal of Veterinary Science 2025;45(9):1918-1926
Aimed to find a safe and effective drug to replace nitroimidazole drugs in aquaculture pro-duction for the prevention and treatment of Trichomoniasis in pigeons,which can improve the eco-nomic benefits of meat pigeon breeding and ensure food safety.Firstly,Trichomonas was isolated and cultured from the crop of diseased pigeons and identified.After stable passage,a quantitative method for in vitro detection of Trichomonas was established by combining an automated cell counter and quantitative real-time PCR technology.To prepared the drug,powders of Sophora fla-vescent and Philodendron were made into herbal water extracts(SFPA)and mixed with copper sulfate(CS)solution.Then added the drug to the culture medium of Trichomonas to determine the effective concentration of it.A total of 135 pairs each of Silver King and Mimas breeding pigeons in the same laying period were selected and randomly divided into three groups,with 6 replicates in each group and 15 pairs of breeding pigeons in each replicate.Four days before brooding,the three groups were fed with 200 mL of pure water,0.5 g/L metronidazole(MDZ)solution,and a mixed solution of 30 g/L SFPA and 0.5 g/L CS,respectively.The feeding experiment lasted for 26 d.Results showed that the mixed solution of SFPA and CS had a significant killing effect on Trichomonas in vitro(P<0.05).Feeding the drug to breeding pigeons significantly reduced the in-fection rate of breeding pigeons by Trichomonas(P<0.05).The drug had no significant effect on the serum biochemical indexes,antioxidant properties,immunoglobulin levels of breeding pigeons,the average cage weight,immune organ indexes,meat quality and slaughter performance of squabs(P>0.05).The results suggested that adding SFPA and CS to pigeons can effectively prevent and treat Trichomoniasis and improve production performance.It can replace nitroimidazole drugs without affecting the immune level of breeding pigeons and the weight,immune level,slaughter performance and meat quality of squabs,thereby reduce drug residues in poultry products and en-hance the food safety.


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