1.Effect of dihydroquercetin on refractive development in mice with form deprivation myopia based on NLRP3 inflammasome pathway
Po ZHAO ; Meng MA ; Tengwen YANG ; Lingfei MENG ; Jing LIU ; Xiaoxiao XING ; Huiying HOU
International Eye Science 2026;26(3):391-397
AIM: To explore the effect of dihydroquercetin on visual function in mice with form deprivation myopia based on the NOD-like receptor thermoprotein domain-related protein 3(NLRP3)inflammasome pathway.METHODS: The C57BL/6 mice were randomly divided into control group and form deprivation myopia model group, and the form deprivation myopia model group was constructed by covering the right eye with a translucent eye patch. After successful modeling, the mice in the model group of form deprivation myopia were randomly divided into model group, low-, medium- and high-dose dihydroquercetin groups, and high-dose dihydroquercetin + NLRP3 agonist group. The diopter and axial length of mice in each group were detected. The kit was used to detect the levels of superoxide dismutase(SOD)and malondialdehyde(MDA)in retinal tissue. RT-qPCR was used to detect the mRNA expressions of NLRP3, apoptosis-associated spot-like protein(ASC), Caspase-1, IL-1β and IL-18 in retinal tissues. Western blot was used to detect the expression of NLRP3, ASC, cleaved Caspase-1, IL-1β and IL-18 proteins in retinal tissues. TUNEL staining was used to detect apoptosis in retinal tissue.RESULTS: Compared with the control group, the diopter of the mice in the model group decreased, and axial length increased, and the SOD decreased whereas MDA, NLRP3, ASC, Caspase-1, IL-1β, IL-18 increased, and the rate of apoptosis in retinal tissue increased(all P<0.05). Compared with the model group, the diopter of mice in the low-, medium- and high-dose dihydroquercetin groups increased, axial length shortened, the SOD increased, whereas MDA, NLRP3, ASC, Caspase-1, IL-1β, IL-18 decreased, and the rate of apoptosis in retinal tissue decreased(all P<0.05). Compared with the high-dose dihydroquercetin group, the high-dose dihydroquercetin+NLRP3 agonist group had reduced diopter, increased axial length, decreased SOD levels, elevated MDA, NLRP3, ASC, Caspase-1, IL-1β, and IL-18 levels, as well as increased apoptosis rate in retinal tissue(all P<0.05).CONCLUSION: Dihydroquercetin can improve visual function in mice with form deprivation myopia by inhibiting pyroptosis and oxidative stress responses, which may be related to the suppression of NLRP3 inflammasome. NLRP3 agonists can partially mitigate the effects of high-dose dihydroquercetin on form deprivation myopia in mice.
2.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
3.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
4.Expert consensus on management of instrument separation in root canal therapy.
Yi FAN ; Yuan GAO ; Xiangzhu WANG ; Bing FAN ; Zhi CHEN ; Qing YU ; Ming XUE ; Xiaoyan WANG ; Zhengwei HUANG ; Deqin YANG ; Zhengmei LIN ; Yihuai PAN ; Jin ZHAO ; Jinhua YU ; Zhuo CHEN ; Sijing XIE ; He YUAN ; Kehua QUE ; Shuang PAN ; Xiaojing HUANG ; Jun LUO ; Xiuping MENG ; Jin ZHANG ; Yi DU ; Lei ZHANG ; Hong LI ; Wenxia CHEN ; Jiayuan WU ; Xin XU ; Jing ZOU ; Jiyao LI ; Dingming HUANG ; Lei CHENG ; Tiemei WANG ; Benxiang HOU ; Xuedong ZHOU
International Journal of Oral Science 2025;17(1):46-46
Instrument separation is a critical complication during root canal therapy, impacting treatment success and long-term tooth preservation. The etiology of instrument separation is multifactorial, involving the intricate anatomy of the root canal system, instrument-related factors, and instrumentation techniques. Instrument separation can hinder thorough cleaning, shaping, and obturation of the root canal, posing challenges to successful treatment outcomes. Although retrieval of separated instrument is often feasible, it carries risks including perforation, excessive removal of tooth structure and root fractures. Effective management of separated instruments requires a comprehensive understanding of the contributing factors, meticulous preoperative assessment, and precise evaluation of the retrieval difficulty. The application of appropriate retrieval techniques is essential to minimize complications and optimize clinical outcomes. The current manuscript provides a framework for understanding the causes, risk factors, and clinical management principles of instrument separation. By integrating effective strategies, endodontists can enhance decision-making, improve endodontic treatment success and ensure the preservation of natural dentition.
Humans
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Root Canal Therapy/adverse effects*
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Consensus
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Root Canal Preparation/adverse effects*
5.International clinical practice guideline on the use of traditional Chinese medicine for functional dyspepsia (2025).
Sheng-Sheng ZHANG ; Lu-Qing ZHAO ; Xiao-Hua HOU ; Zhao-Xiang BIAN ; Jian-Hua ZHENG ; Hai-He TIAN ; Guan-Hu YANG ; Won-Sook HONG ; Yu-Ying HE ; Li LIU ; Hong SHEN ; Yan-Ping LI ; Sheng XIE ; Jin SHU ; Bin-Fang ZENG ; Jun-Xiang LI ; Zhen LIU ; Zheng-Hua XIAO ; Jing-Dong XIAO ; Pei-Yong ZHENG ; Shao-Gang HUANG ; Sheng-Liang CHEN ; Gui-Jun FEI
Journal of Integrative Medicine 2025;23(5):502-518
Functional dyspepsia (FD), characterized by persistent or recurrent dyspeptic symptoms without identifiable organic, systemic or metabolic causes, is an increasingly recognized global health issue. The objective of this guideline is to equip clinicians and nursing professionals with evidence-based strategies for the management and treatment of adult patients with FD using traditional Chinese medicine (TCM). The Guideline Development Group consulted existing TCM consensus documents on FD and convened a panel of 35 clinicians to generate initial clinical queries. To address these queries, a systematic literature search was conducted across PubMed, EMBASE, the Cochrane Library, China National Knowledge Infrastructure (CNKI), VIP Database, China Biology Medicine (SinoMed) Database, Wanfang Database, Traditional Medicine Research Data Expanded (TMRDE), and the Traditional Chinese Medical Literature Analysis and Retrieval System (TCMLARS). The evidence from the literature was critically appraised using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. The strength of the recommendations was ascertained through a consensus-building process involving TCM and allopathic medicine experts, methodologists, pharmacologists, nursing specialists, and health economists, leveraging their collective expertise and empirical knowledge. The guideline comprises a total of 43 evidence-informed recommendations that span a range of clinical aspects, including the pathogenesis according to TCM, diagnostic approaches, therapeutic interventions, efficacy assessments, and prognostic considerations. Please cite this article as: Zhang SS, Zhao LQ, Hou XH, Bian ZX, Zheng JH, Tian HH, Yang GH, Hong WS, He YY, Liu L, Shen H, Li YP, Xie S, Shu J, Zeng BF, Li JX, Liu Z, Xiao ZH, Xiao JD, Zheng PY, Huang SG, Chen SL, Fei GJ. International clinical practice guideline on the use of traditional Chinese medicine for functional dyspepsia (2025). J Integr Med. 2025; 23(5):502-518.
Dyspepsia/drug therapy*
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Humans
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Medicine, Chinese Traditional/methods*
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Practice Guidelines as Topic
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Drugs, Chinese Herbal/therapeutic use*
6.Effect of exercise prescription intervention among patients with type 2 diabetes mellitus
WEN Jinbo ; ZHANG Ting ; ZHAO Qian ; LIU Jing ; SUN Zhongming ; HOU Jianbin ; LU Zhengquan ; XU Yuting ; MA Xinxiong ; PAN Enchun
Journal of Preventive Medicine 2025;37(12):1211-1216
Objective:
To evaluate the effect of exercise prescription intervention among patients with type 2 diabetes mellitus (T2DM), so as to provide the evidence for guiding appropriate physical activity and glycemic control in this population.
Methods:
In July 2023, T2DM patients managed by two community health service centers in Qingjiangpu District, Huai'an City, Jiangsu Province, were selected as the study participants and randomly assigned divided into a control group and an intervention group. The control group received routine chronic disease management under the basic public health services, while the intervention group, in addition to receiving the same routine chronic disease management, was provided with exercise prescription to guide their physical activity at baseline (T0), after 3 months of intervention (T1), and after 6 months of intervention (T2). Data on weight-related indicators, glycated hemoglobin (HbA1c), and blood lipid were collected through physical examinations and laboratory tests at T0 and after 12 months of intervention (T3). The differences in indicators between the two groups before and after the intervention were analyzed using generalized estimating equations.
Results:
The intervention group consisted of 197 patients, including 99 males, accounting for 50.25%. The median disease duration was 7.10 (interquartile range, 7.80) years, and 113 patients had suboptimal HbA1c levels, accounting for 57.36%. The control group included 196 patients, including 99 females, accounting for 50.51%. The median disease duration was 6.10 (interquartile range, 7.00) years, and 100 patients had suboptimal HbA1c levels, accounting for 51.02%. Before the intervention, no statistically significant differences were observed between the two groups in gender, educational level, disease duration, pharmacological treatment, smoking, alcohol consumption, and HbA1c levels (all P>0.05). In the intervention group, the proportion of participants engaging in aerobic exercise and strength training increased from 78.17% and 8.12% at T0 to 85.79% and 16.24% at T3, respectively (both P<0.05). The results of the generalized estimating equations revealed significant interactions between group and time for waist-to-hip ratio, total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) following the intervention (all P<0.05). A statistically significant difference in waist-to-hip ratio was found between the two groups (P<0.05), with a greater reduction observed in the intervention group compared to the control group. Significant differences in TC and LDL-C levels were noted across different intervention time points (both P<0.05). Specifically, the intervention group demonstrated reductions of 0.35 mmol/L in TC and 0.42 mmol/L in LDL-C from baseline to follow-up (both P<0.05).
Conclusion
The 12-month exercise prescription intervention can effectively enhance exercise participation and reduce waist-to-hip ratio, TC, and LDL-C levels among patients with T2DM.
7.Analysis on influencing factors of airway mucosal erosion occurrence in child Mycoplasma pneumoniae pneumonia
Fang YOU ; Duanxia HOU ; Jing ZHAO ; Yuqing WANG
Chongqing Medicine 2025;54(2):436-440
Objective To investigate the influencing factors of airway mucosal erosion occurrence in child Mycoplasma pneumoniae pneumonia.Methods The medical record data of 162 children patients with Mycoplasma pneumoniae pneumonia hospitalized in the pediatric department of this hospital from February 2023 to February 2024 were analyzed retrospectively.The patients were divided into the mucosal erosion group(n=43)and non-mucosal erosion group(n=119)according to whether or not the mucosal erosion was ob-served by the bronchoscope.The general data,laboratory examination and lung ultrasound images data in the two groups were collected.The pulmonary ultrasound(LUS)was scored.The clinical characteristics,experi-mental indexes and LUS score were compared between the two groups.The stepwise logistic regression was used to analyze the influencing factors of airway mucosal erosion occurrence in Mycoplasma pneumoniae pneu-monia.The receiver operating characteristic(ROC)curve was drawn to analyze the diagnostic efficiency.Results There were statistically significant differences in the fever duration,fever peak,pleural effusion,hos-pitalization duration,neutrophil ratio,levels of C-reactive protein(CRP),lactate dehydrogenase(LDH)and D-dimer,and LUS score had statistical differences between the two groups(P<0.05).The multivariate logistic regression analysis results showed that the fever duration,neutrophil ratio,LDH,D-dimer and LUS score were the influencing factors for airway mucosal erosion occurrence in Mycoplasma pneumoniae pneumonia.The fe-ver duration,neutrophil ratio,LDH,D-dimer and LUS score all had certain predictive value for airway mucosal erosion occurrence in Mycoplasma pneumonae pneumonia,in which the area under the curve(AUC)of LDH,D-dimer and LUS score was larger,and the predictive value was higher(P<0.05).Conclusion The influen-cing factors of airway mucosal erosion in children patients with Mycoplasma pneumoniae pneumonia should be vigilant to improve their prognosis.
8.Clinical phenotype and gene variation analysis of MED25 gene mutation induced Basel-Vanagaite-Smirin-Yosef syndrome
Guangjin LUO ; Xuan ZHANG ; Xiao CHEN ; Lihua WANG ; Jing ZHAO ; Xiao DING ; Jun CHEN ; Lijiang WANG ; Aiyun YUAN ; Mei HOU
Chinese Journal of Neurology 2024;57(1):47-53
Objective:To investigate the clinical phenotype and genetic variation of Basel-Vanagaite-Smirin-Yosef syndrome (BVSYS), and to enhance clinicians′ knowledge of the disease.Methods:The clinical data of a child with BVSYS admitted to the Department of Neurological Rehabilitation, Qingdao Women and Children′s Hospital Affiliated to Qingdao University in February 2023 were collected. Whole genome sequencing was used to analyze the pathogenic genes of the child, and Sanger sequencing was used to verify the suspected mutation sites of the family members. The clinical phenotype and genetic variation characteristics were analyzed, and the clinical characteristics of BVSYS were summarized in combination with relevant literature.Results:The patient, a female aged 3 years and 1 month, presented with global developmental delay, speech disorder, distinctive facial features, esotropia, epilepsy, hypotonia and atrial septal defect. Brain magnetic resonance imaging revealed bilateral ventriculomegaly with abnormal signal intensity in the posterior bodies of both lateral ventricles and thinning of the corpus callosum. The whole genome sequencing revealed a homozygous missense mutation c.518 (exon5) T>C (p.IIe173Thr) in the MED25 gene of the child, and Sanger sequencing confirmed that her parents and elder brother carried the aforementioned heterozygous mutation, which was classified as a likely pathogenic mutation according to the guidelines of the American College of Medical Genetics and Genomics. A total of 22 cases from 6 literature sources were retrieved, with no reported cases in China so far. Conclusions:BVSYS is clinically rare. For patients presenting with unexplained global developmental delay or intellectual disability combined with craniofacial, neurological, cardiac, and eye abnormalities, targeted genetic testing can facilitate a definite diagnosis.
9.Efficacy of different questionnaires in screening COPD in the communities of Songjiang District, Shanghai
Xin YIN ; Yiling WU ; Shanshan HOU ; Jing LI ; Wei LUO ; Minjun YU ; Jinxin ZANG ; Wei WANG ; Xuyan SU ; Qi ZHAO ; Yinfeng ZHU ; Genming ZHAO ; Yonggen JIANG ; Qingwu JIANG ; Na WANG
Shanghai Journal of Preventive Medicine 2024;36(4):386-392
ObjectiveTo evaluate the efficacy of three screening questionnaires for COPD in the community residents of Songjiang District, Shanghai, and to provide a basis for selecting COPD screening questionnaire and process that are more suitable. MethodsCommunity residents aged 40 years or over were randomly selected from the Shanghai Suburban Adult Cohort and Biobank for the study with screening questionnaires and spirometry. Questionnaires included the COPD screening questionnaire (COPD-SQ), the COPD population screener (COPD-PS) and the revised COPD diagnostic questionnaire (revised-CDQ). Evaluation of the efficacy of these questionnaires was based on the area under the receiver operating characteristic curve (AUC) of the subjects. DeLong test was used to compare the accuracy of different questionnaires; Z test was used to compare the accuracy of different cut-off values for the same questionnaire. ResultsAmong 3 184 community residents, a total of 259 (8.1%) COPD patients were screened by spirometry. AUC values of these 3 screening questionnaires were >0.7 indicating that they were reliable COPD screening tools. The sensitivity and specificity of the questionnaires at the recommended cut-off values were COPD-SQ (63.7% and 72.2%), COPD-PS (12.0% and 96.1%), and revised CDQ (78.8% and 52.7%), with the COPD-SQ having the highest screening accuracy (AUC=0.754). The optimal and recommended cut-off values for the three questionnaires differed in this population, but the difference in accuracy was statistically significant only for COPD-PS. The optimal cut-off values for the three questionnaires differed between male and female, and the sensitivity and accuracy of COPD-SQ and COPD-PS improved when lower cut-off values were used for women. The AUC was greater when two questionnaires were utilized simultaneously for screening, but the differences were not statistically significant. ConclusionThe COPD-SQ is recommended for primary COPD screening; a lower cut-off value for women should be considered. The COPD screening questionnaire needs to be further improved for the early diagnosis and treatment of COPD patients.
10.Epidemic characteristics and trend of brucellosis in China from 2004 to 2018
Tian LIU ; Yang WU ; Yeqing TONG ; Jigui HUANG ; Dexin RUAN ; Qingbo HOU ; Menglei YAO ; Jing ZHAO
Chinese Journal of Endemiology 2024;43(3):190-196
Objective:To analyze the epidemic characteristics of brucellosis in China from 2004 to 2018, in order to understand the development trend of brucellosis.Methods:The surveillance data of brucellosis in China from 2004 to 2018 were collected from National Public Health Science Data Center. Joinpoint regression was used to analyze the trend of brucellosis incidence in China and various provinces. Overall trends were estimated by the average annual percentage change (AAPC). Seasonal and trend decomposition using loess (STL) was used to analyze the seasonal characteristics of brucellosis in China and various provinces. The age-related thermodynamic diagram of incidence rate was used to analyze the characteristics of age-onset changes.Results:From 2004 to 2018, a total of 524 980 brucellosis cases and 16 deaths were reported nationwide, with a incidence rate of 2.61/100 000 and a case fatality rate of (3.05 × 10 -3)%. The incidence of brucellosis in China was on the rise (AAPC = 11.58%, 95% CI: 7.91% - 15.25%, P < 0.001). There was no significant trend of change in Inner Mongolia Autonomous Region, Shanxi and Shaanxi provinces ( P > 0.05). Tibet Autonomous Region showed a downward trend (AAPC = - 55.19%, P < 0.001). All other provinces were showing an upward trend (AAPC > 0, P < 0.05). The peak incidence in China occurred from April to June. In terms of provinces, the peak incidence in Hainan, Sichuan, Guizhou, Fujian and Anhui provinces occurred from April to August, the peak incidence in Chongqing and Shanghai cities occurred from June to August, and the peak incidence in other provinces was generally from April to June. There were reports of brucellosis cases in all age groups nationwide, and the age distribution showed an inverted "V" shape. The peak incidence occurred in the 50 - 54 years old (5.43/100 000), followed by the 60 - 64 years old (4.94/100 000). From 2004 to 2018, the top 3 age groups of incidence rate changed from 40 - 44, 50 - 54 and 35 - 39 years old in 2004 to 50 - 54, 60 - 64 and 55 - 59 years old in 2018. Conclusions:The incidence of brucellosis is on the rise nationwide and in most provinces from 2004 to 2018. The high incidence age is gradually changing to the elderly population.


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