1.Construction and Application of A Digital System for "Disease-pulse-syndrome-treatment Differentiation" Paradigm
Tiantian FAN ; Ying LYU ; Ru NIU ; Xiaojie KANG ; Fenglan WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):217-225
In the context of the digital-intelligent era of traditional Chinese medicine (TCM), the lack of clinical thinking is a pressing issue that limits the overall effectiveness of TCM and talent cultivation. The "disease-pulse-syndrome-treatment differentiation" thinking model, originally developed by ZHANG Zhongjing in the Treatise on Cold Damage and Miscellaneous Diseases (Shang Han Za Bing Lun), has served as a guideline and paradigm followed by generations of medical practitioners. This study aims to construct a digitalized "disease-pulse-syndrome-treatment differentiation" thinking system, develop a digital assessment system, and implement it for practical application. The goal is to recommend a digitalized assessment model for TCM and provide a reference for the integrated innovation of talent cultivation in medicine, education, and research. First, based on the complex diagnostic and treatment framework of the Treatise on Cold Damage Diseases (Shang Han Lun), the research team previously established a "process" + "result" thinking model that included four processes and ten steps. This study integrates knowledge unit theory and digital technology to create a digital system for "disease-pulse-syndrome-treatment differentiation" with a dual-control model of "process control" and "result control". The system consists of 46 items across three categories: knowledge body (W=20%), knowledge element (W=30%), and knowledge element associations (W=50%). Second, a mixed-methods research design was employed, combining qualitative and quantitative approaches. The Delphi method was used to establish hierarchical levels and screen items, while the analytic hierarchy process (AHP) was used to assign weights. Expert surveys were conducted to reach a consensus and further validate the rationale and necessity of the system. Finally, based on the system architecture and integrating key computer technologies, a digital assessment system for "disease-pulse-syndrome-treatment differentiation" was developed. The Treatise on Cold Damage Diseases (Shang Han Lun) was used as a case study to validate the system's feasibility. Statistical results showed that the difficulty level of the assessment question bank was moderate (DL ranging from 0.65 to 0.89), with good discrimination (D>0.4), and reasonable reliability and validity (Cronbach's α=0.84, KMO=0.72, Bartlett's test P<0.01). The system can perform process-oriented evaluations of candidates' thinking in "disease-pulse-syndrome-treatment differentiation" and effectively achieve the goal of clinical thinking assessment through a combination of "process control" and "result control". The examination system offers three major advantages. It standardizes, objectifies, and streamlines the assessment of thought processes, facilitates the organic transformation of TCM education from outcome-based education to thinking-based education, and from exam-oriented education to competency-oriented education, and promotes the practical transformation of TCM assessments from qualitative to quantitative evaluation, as well as from theory to practice. In summary, this system not only represents a technological upgrade to traditional examinations but also empowers the cultivation and assessment of clinical talent in the digital-intelligent era, demonstrating broad application prospects.
2.Clinical and Neuroelectrophysiological Features of Autoimmune Nodopathy
Hongfei TAI ; Xunyan HUANG ; Songtao NIU ; Bin CHEN ; Yuzhi SHI ; Xingao WANG ; Fan JIAN ; Hua PAN ; Zaiqiang ZHANG
JOURNAL OF RARE DISEASES 2026;5(2):191-199
To summarize the clinical characteristics, antibody spectrum and neuroelectrophysiological features of autoimmune nodopathy(AN), and to explore the phenotypic differences among different antibody-positive subgroups. The clinical and electrophysiological data of patients definitely diagnosed with AN in Beijing Tiantan Hospital, Capital Medical University, from October 2018 to January 2026 were retrospectively analyzed. A total of 33 patients with AN were included. Antibody examination results showed that, anti-neurofascin(NF)155 antibody was the most prevalent, detected in 17 patients(51.50%), followed by anti-contactin-1(CNTN1) antibody in 8 patients(24.24%). Anti-NF186 antibody(4 cases, 12.12%), anti-contactin-associated protein 1(Caspr1) antibody(2 cases, 6.06%) and dual-target antibody positivity(2 cases, 6.06%) were relatively uncommon. The main clinical manifestations of AN patients included symmetric distal paresthesia of the extremities(32 cases, 96.97%), limb weakness(31 cases, 93.93%) and sensory ataxia(25 cases, 75.76%). Different antibody-positive subgroups presented distinct phenotypic features: patients with positive anti-NF155 antibody had a relatively younger age of onset, chronic onset and a high incidence of tremor, which was dominated by immunoglobulin(Ig)G4 subclass antibodies; patients with positive anti-CNTN1 antibody had a relatively advanced age of onset, mostly presented with acute or subacute onset, and were prone to complicated nephrotic syndrome; patients with positive anti-NF186 antibody had relatively mild nerve conduction damage; patients with anti-Caspr1 antibody manifested acute or subacute onset, with relatively elevated cerebrospinal fluid protein level and 24-h intrathecal IgG synthesis rate. The prominent neuroelectrophysiological manifestations of AN included decreased motor and sensory nerve conduction velocities, prolonged distal latency, frequent non-compressive conduction block and abnormal temporal dispersion. Definite sensory nerve action potentials could not be elicited in more than half of the patients. Patients with AN show high heterogeneity in clinical and neuroelectrophysiological characteristics, and different antibody-positive subgroups correspond to specific clinical and neuroelectrophysiological phenotypes.
3.Influencing factors of stroke complicated with hypertension and its compliance with antihypertensive drugs
Mei LI ; Xiaoli LIU ; Fan ZHANG ; Fujuan YUE ; Tiantian GUO ; Xiuli NIU ; Jixin SUN ; Dongsheng JIANG
Journal of Public Health and Preventive Medicine 2026;37(3):94-98
Objective To investigate the influencing factors of stroke patients with hypertension and their compliance with antihypertensive drugs, and to provide targeted intervention measures for stroke prevention in hypertensive patients. Methods Using the method of multi-stage cluster sampling, a total of 59,434 permanent residents aged 40 and above were selected from 48 monitoring sites in 9 cities of Hebei Province from December 2019 to December 2020. Unconditional logistic regression analysis was used to explore the influencing factors of stroke complicated with hypertension and the compliance of patients with antihypertensive drugs. Results Among the 59 434 subjects, the prevalence rate of stroke was 4.33% and the prevalence rate of stroke complicated with hypertension was 82.47%. The results of univariate analysis showed that the proportion of women, rural areas, dyslipidemia, diabetes, obesity, and people with family history of stroke was higher in stroke patients with hypertension, and the difference was statistically significant (P<0.05). Multivariate logistic regression analysis showed that rural areas, dyslipidemia, diabetes, obesity, and family history of stroke significantly increased the risk of stroke, and the OR (95%CI) values were 1.29 (1.03-1.62), 1.39 (1.12-1.72), 1.58 (1.25-1.99), 1.61 (1.22-2.12) and 1.60 (1.26-2.04), respectively. Among stroke patients with hypertension, 92.71% of patients took antihypertensive drugs. It was found that women's compliance with antihypertensive drugs was good, with an OR (95%CI) value of 1.46 (1.01-2.09). Conclusion The prevalence rate of stroke complicated with hypertension is high in people aged 40 and above in Hebei Province. Hypertensive people should lower blood lipids, control blood glucose, and lose weight as soon as possible to prevent the occurrence of stroke.
4.The Role and Molecular Mechanism of N⁶-methyladenosine Modification in Spermatogenesis
Shi-Qi MENG ; Wen-Ting LU ; Xu CHENG ; Fan YANG ; Chang-Min NIU ; Ying ZHEGN
Progress in Biochemistry and Biophysics 2026;53(5):1297-1312
Spermatogenesis is a highly ordered and spatiotemporally regulated developmental process in the male reproductive system, during which spermatogonial stem cells (SSCs), supported by the seminiferous tubule microenvironment, sequentially undergo mitosis, meiosis, and spermiogenesis to ultimately generate structurally intact spermatozoa. This complex process is accompanied by extensive transcriptional reprogramming, chromatin remodeling, and finely tuned post-transcriptional regulation. Precise control of RNA fate is therefore essential for maintaining the continuity and fidelity of spermatogenesis, and its disruption represents a major molecular basis of male infertility. N6-methyladenosine (m6A), the most abundant internal RNA modification in eukaryotes, has emerged as a critical regulator of post-transcriptional gene expression. m6A methyltransferases (“writers”) catalyze the addition of a methyl group to the N6 position of adenosine, m6A demethylases (“erasers”) remove the modification, and m6A-binding proteins (“readers”) recognize m6A-modified transcripts. Through the coordinated actions of these factors, m6A regulates transcript fate at multiple levels, including RNA splicing, nuclear export, stability, translation, and decay. Emerging evidence indicates that m6A-mediated regulation is essential across multiple stages of spermatogenesis, including SSC self-renewal and differentiation, meiotic progression, maintenance of chromosomal stability, and sperm morphogenesis. Beyond its intrinsic functions in germ cells, m6A also contributes to the regulation of the testicular microenvironment. In sertoli cells, m6A is involved in maintaining blood-testis barrier integrity, RNA processing, and paracrine signaling, thereby providing structural and metabolic support for germ cell development. In Leydig cells, m6A regulates steroidogenesis, particularly testosterone synthesis, and participates in cellular stress responses and metabolic homeostasis. Through these mechanisms, m6A indirectly influences spermatogenesis by modulating the functional state of testicular somatic cells, highlighting an integrated regulatory mode that combines cell-intrinsic and microenvironment-mediated effects. Notably, distinct classes of m6A regulators exhibit pronounced stage-specific functions and coordinated division of labor, collectively forming a multilayered and dynamic regulatory network. Writers often display dosage- and temporal window-dependent effects; erasers contribute to stage-specific demethylation and functional compensation; while readers function through a “switch-buffer” dual-layer architecture, and RNA-binding proteins (RBPs) participate in substrate selection and post-transcriptional regulation. Importantly, emerging evidence suggests that some m6A-related proteins can function through noncanonical mechanisms independent of m6A recognition, such as intrinsic RNA-binding activity, helicase function, or ribonucleoprotein complex assembly, thereby expanding the functional landscape of the m6A regulatory system. Dysregulation of m6A machinery can lead to multiple spermatogenic defects, including impaired SSC self-renewal, meiotic arrest, abnormal chromatin remodeling, and defective sperm formation, ultimately resulting in male infertility. Despite substantial advances, several critical questions remain unresolved, including the distinction between m6A-dependent and -independent mechanisms, the spatiotemporal dynamics of m6A modifications at single-cell resolution, and the coordination and antagonism among different regulatory factors. In this review, we systematically summarize the dual regulation of spermatogenesis by germ cell-intrinsic mechanisms and the testicular microenvironment, and delineate the molecular mechanisms and stage-specific functions of the dynamic m6A regulatory network. We further discuss the current limitations in the field and propose feasible experimental strategies for future investigation. Collectively, this work aims to provide a comprehensive framework for understanding the epitranscriptomic regulation of spermatogenesis and to offer theoretical insights into the pathogenesis and clinical management of male infertility.
5.The Role and Molecular Mechanism of N⁶-methyladenosine Modification in Spermatogenesis
Shi-Qi MENG ; Wen-Ting LU ; Xu CHENG ; Fan YANG ; Chang-Min NIU ; Ying ZHEGN
Progress in Biochemistry and Biophysics 2026;53(5):1297-1312
Spermatogenesis is a highly ordered and spatiotemporally regulated developmental process in the male reproductive system, during which spermatogonial stem cells (SSCs), supported by the seminiferous tubule microenvironment, sequentially undergo mitosis, meiosis, and spermiogenesis to ultimately generate structurally intact spermatozoa. This complex process is accompanied by extensive transcriptional reprogramming, chromatin remodeling, and finely tuned post-transcriptional regulation. Precise control of RNA fate is therefore essential for maintaining the continuity and fidelity of spermatogenesis, and its disruption represents a major molecular basis of male infertility. N6-methyladenosine (m6A), the most abundant internal RNA modification in eukaryotes, has emerged as a critical regulator of post-transcriptional gene expression. m6A methyltransferases (“writers”) catalyze the addition of a methyl group to the N6 position of adenosine, m6A demethylases (“erasers”) remove the modification, and m6A-binding proteins (“readers”) recognize m6A-modified transcripts. Through the coordinated actions of these factors, m6A regulates transcript fate at multiple levels, including RNA splicing, nuclear export, stability, translation, and decay. Emerging evidence indicates that m6A-mediated regulation is essential across multiple stages of spermatogenesis, including SSC self-renewal and differentiation, meiotic progression, maintenance of chromosomal stability, and sperm morphogenesis. Beyond its intrinsic functions in germ cells, m6A also contributes to the regulation of the testicular microenvironment. In sertoli cells, m6A is involved in maintaining blood-testis barrier integrity, RNA processing, and paracrine signaling, thereby providing structural and metabolic support for germ cell development. In Leydig cells, m6A regulates steroidogenesis, particularly testosterone synthesis, and participates in cellular stress responses and metabolic homeostasis. Through these mechanisms, m6A indirectly influences spermatogenesis by modulating the functional state of testicular somatic cells, highlighting an integrated regulatory mode that combines cell-intrinsic and microenvironment-mediated effects. Notably, distinct classes of m6A regulators exhibit pronounced stage-specific functions and coordinated division of labor, collectively forming a multilayered and dynamic regulatory network. Writers often display dosage- and temporal window-dependent effects; erasers contribute to stage-specific demethylation and functional compensation; while readers function through a “switch-buffer” dual-layer architecture, and RNA-binding proteins (RBPs) participate in substrate selection and post-transcriptional regulation. Importantly, emerging evidence suggests that some m6A-related proteins can function through noncanonical mechanisms independent of m6A recognition, such as intrinsic RNA-binding activity, helicase function, or ribonucleoprotein complex assembly, thereby expanding the functional landscape of the m6A regulatory system. Dysregulation of m6A machinery can lead to multiple spermatogenic defects, including impaired SSC self-renewal, meiotic arrest, abnormal chromatin remodeling, and defective sperm formation, ultimately resulting in male infertility. Despite substantial advances, several critical questions remain unresolved, including the distinction between m6A-dependent and -independent mechanisms, the spatiotemporal dynamics of m6A modifications at single-cell resolution, and the coordination and antagonism among different regulatory factors. In this review, we systematically summarize the dual regulation of spermatogenesis by germ cell-intrinsic mechanisms and the testicular microenvironment, and delineate the molecular mechanisms and stage-specific functions of the dynamic m6A regulatory network. We further discuss the current limitations in the field and propose feasible experimental strategies for future investigation. Collectively, this work aims to provide a comprehensive framework for understanding the epitranscriptomic regulation of spermatogenesis and to offer theoretical insights into the pathogenesis and clinical management of male infertility.
6.Molecular Mechanisms of Intraflagellar Transport in Regulating ciliogenesis and Ciliopathies
Ting-Ting GE ; Fan YANG ; Chang-Min NIU ; Ying ZHENG
Progress in Biochemistry and Biophysics 2026;53(8):2179-2193
Intraflagellar transport (IFT) is a core mechanism for ciliary assembly, length maintenance, ciliary proteome homeostasis and signal transduction. Most proteins required for ciliary structure and function are synthesized in the cytoplasm. Because the ciliary compartment is separated from the cell body by the selective barrier of the transition zone, these proteins cannot freely equilibrate between the cytoplasm and the cilium. Consequently, axonemal components, membrane proteins and signaling molecules must be actively imported into cilia, retrieved from the ciliary compartment, and recycled or degraded through highly ordered transport and sorting pathways. The IFT system is mainly composed of the IFT-A complex, IFT-B complex, kinesin-2, dynein-2 and the Bardet-Biedl syndrome protein complex (BBSome). Through coordinated anterograde and retrograde transport, these modules mediate the dynamic trafficking of different classes of ciliary cargoes. Anterograde transport delivers structural and membrane-associated components from the ciliary base toward the ciliary tip, whereas retrograde transport retrieves IFT components and selected cargoes back toward the ciliary base and cytoplasm. In this way, IFT not only supports the construction of the axoneme but also contributes to the maintenance of ciliary composition and the regulation of ciliary signaling activity. In recent years, advances in cryo-electron microscopy, in situ cryo-electron tomography and single-molecule imaging have greatly improved our understanding of the molecular mechanisms underlying IFT. These approaches have revealed how IFT trains are assembled at the ciliary base, how they move along axonemal microtubule tracks, how they undergo directional switching at the ciliary tip, and how cargoes are retrieved and recycled. Among the IFT modules, IFT-B acts as the major scaffold of IFT trains. It participates in cargo loading, motor coupling and initiation of anterograde transport. IFT-A is involved in retrograde transport, membrane protein adaptor function and train remodeling. The BBSome, through reversible association with the IFT system, regulates ciliary membrane protein sorting, signaling receptor clearance and renewal of the ciliary proteome. These functions indicate that the IFT machinery is not a simple linear transport pathway, but rather a dynamic and reconfigurable transport system. The conversion of transport direction is a key step in the IFT cycle. This process is closely associated with disassembly of anterograde trains, dissociation of kinesin-2, activation of dynein-2 at the ciliary tip and reassembly of retrograde trains. In terms of pathogenic mechanisms, IFT abnormalities may cause ciliopathies through four major pathways: defects in ciliary assembly and structure, abnormal localization of ciliary cargoes, dysregulation of signaling pathways, and impaired cargo unloading and retrieval. These defects can affect multiple organ systems, including the retina, kidney, skeleton, respiratory tract, reproductive system, and neuro-metabolic system. Current therapeutic strategies are still mainly based on symptomatic support and maintenance of organ function. Overall, IFT is a dynamic transport system jointly regulated by axonemal structure, motor activity, cargo selection and cellular signaling. It links ciliary architecture with protein turnover and signaling regulation, thereby playing a fundamental role in both ciliary homeostasis and ciliopathy pathogenesis. Further elucidation of IFT regulatory mechanisms and their relationships with disease phenotypes will help promote mechanism-based classification, genetic diagnosis and precision intervention for ciliopathies.
7.PADI1 promotes proliferation, migration, and invasion of clear cell renal cell carcinoma cells and its possible underlying mechanism
Li Tao1 ; Niu Yunfeng2 ; Wang Xingdan3 ; Zeng Kunpeng1 ; Chen Hao1 ; Hu Wenshi1 ; Fan Bo1
Chinese Journal of Cancer Biotherapy 2026;33(8):886-898
[摘 要] 目的:探讨肽基精氨酸脱亚胺酶1(PADI1)对肾透明细胞癌(ccRCC)细胞迁移、增殖、侵袭等生物学行为的影响及相关分子机制。方法:首先,利用转录组测序筛选肾癌组织与癌旁组织之间的差异表达基因,并通过GEPIA、TIMER2.0等数据库分析其差异表达水平。选取2024至2025年河北医科大学第四医院泌尿外科术中留存的59例ccRCC患者的组织标本,用RT-qPCR法、免疫组化SP法检测肾癌组织及癌旁组织中PADI1的表达水平,分析其与各临床参数之间的关系。通过划痕愈合、CCK-8、克隆形成及Transwell实验评估PADI1对ccRCC细胞迁移、增殖和侵袭能力的影响,用流式细胞术检测PADI1对细胞周期的影响,并采用WB法检测A498细胞转染si-PADI1后角质化包膜(CE)形成通路及EMT相关蛋白表达的变化。结果:在ccRCC组织中PADI1的相对表达量显著高于癌旁正常组织(P < 0.01),并与患者年龄、淋巴结转移、远处转移及临床分期相关(P < 0.05)。A498和ACHN细胞中转染si-PADI1,可以有效地下调PADI1 mRNA和蛋白表达水平(P < 0.05);而转染过表达质粒则能够显著上调其表达(P < 0.05),敲低PADI1能够显著抑制其迁移(P < 0.05)、增殖(P < 0.05)与侵袭能力(P < 0.001),而过表达则增强其迁移(P < 0.05)、增殖(P < 0.05)与侵袭能力(P < 0.001),但对细胞周期影响不显著。在A498细胞中,WB实验结果显示PADI1表达能够改变EMT及CE通路相关蛋白表达水平。结论:PADI1在ccRCC中高表达且与ccRCC患者年龄及其淋巴结转移、远处转移、临床分期有关联,其表达水平升高能够影响CE形成通路及加速EMT进程,并增强ccRCC细胞的迁移、增殖、侵袭能力。
8.Association between maximal urethral length preservation and postoperative continence after robot-assisted radical prostatectomy: a meta-analysis and systematic review.
Tian-Yu XIONG ; Zhan-Liang LIU ; Hao-Yu WU ; Yun-Peng FAN ; Yi-Nong NIU
Asian Journal of Andrology 2025;27(2):225-230
Urinary incontinence is a common complication following robot-assisted radical prostatectomy (RARP). Urethral length has been identified as a factor affecting postoperative continence recovery. In this meta-analysis, we examined the association between use of the maximal urethral length preservation (MULP) technique and postoperative urinary continence in patients undergoing RARP. We conducted a comprehensive search of PubMed, Web of Science, Embase, and the Cochrane Library up to December 31, 2023. The quality of the literature was assessed using the Newcastle-Ottawa Scale. A random-effects meta-analysis was performed to synthesize data and calculate the odds ratio (OR) from eligible studies on continence and MULP. Six studies involving 1869 patients met the eligibility criteria. MULP was positively associated with both early continence (1 month after RARP; Z = 3.62, P = 0.003, OR = 3.10, 95% confidence interval [CI]: 1.68-5.73) and late continence (12 months after RARP; Z = 2.34, P = 0.019, OR = 2.10, 95% CI: 1.13-3.90). Oncological outcomes indicated that MULP did not increase the overall positive surgical margin rate or the positive surgical margin status at the prostate apex (both P > 0.05). In conclusion, the use of the MULP technique in RARP significantly improved both early and late postoperative continence outcomes without compromising oncological outcomes.
Humans
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Prostatectomy/adverse effects*
;
Robotic Surgical Procedures/methods*
;
Male
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Urethra/surgery*
;
Urinary Incontinence/prevention & control*
;
Postoperative Complications/etiology*
;
Prostatic Neoplasms/surgery*
;
Organ Sparing Treatments/methods*
9.Bioinformatic analysis of venetoclax sensitivity and resistance mechanisms in acute myeloid leukemia
Yang YANG ; Chenghua XU ; Ning WANG ; Jinting FAN ; Dandan YANG ; Mingming NIU ; Long SHEN ; Hong WANG
Chinese Journal of Hematology 2025;46(5):460-467
Objective:To investigate the anti-leukemic effects and resistance mechanisms of venetoclax in acute myeloid leukemia (AML). Genomic, transcriptomic, and clinical data from AML patients who underwent venetoclax drug sensitivity testing were downloaded from the Beat AML database. Correlation analysis was performed between these data and venetoclax sensitivity outcomes. Differentially expressed genes (DEGs) associated with venetoclax sensitivity were identified from transcriptomic data and subsequently validated using GEO database transcriptomic results and in vitro experiments (including Western blot). Functional enrichment analyses (KEGG and GSEA), transcription factor enrichment analysis (KnockTF), and data from public databases were employed to further investigate key genes and pathways influencing drug sensitivity.Results:After filtering the Beat AML cohort, data from 52 patient samples with available in vitro venetoclax sensitivity results were included for analysis. Patients with FLT3 mutations exhibited greater sensitivity to venetoclax compared to those with FLT3 wild-type. Correlation analysis between clinical information and drug sensitivity data indicated that higher peripheral blood tumor burden was associated with increased sensitivity to venetoclax. Transcriptomic analysis and in vitro experiments confirmed that venetoclax inhibits the FLT3-related signaling pathway, including downregulation of FLT3 expression and reduced phosphorylation of its downstream targets AKT and STAT5. KEGG pathway and KnockTF transcription factor enrichment analyses indicated that venetoclax resistance was associated with increased transcriptional activity of FOXM1 and STAT3. Moreover, high expression of FOXM1 and STAT3 correlated with shorter overall survival in patients.Conclusion:Venetoclax can inhibit the activation of FLT3-related signaling pathways. The activation of STAT3 and FOXM1 transcription factors is a potential key mechanism contributing to venetoclax resistance in AML.
10.Epidemiological characteristics of dengue fever in Shenzhen City in 2024
Jia WAN ; Cong NIU ; Wei LIU ; Liangqiang LIN ; Fan YANG ; Ziquan LÜ ; Zhen ZHANG ; Tiejian FENG ; Jianhua LU ; Dongfeng KONG
Chinese Journal of Schistosomiasis Control 2025;37(5):517-523
Objective To investigate the epidemiological characteristics of dengue fever in Shenzhen City in 2024, so as to provide insights into formulation of the preventive and control measures for dengue fever. Methods The epidemiological data of dengue cases reported in Shenzhen City in 2024 were extracted from the China Disease Prevention and Control Information System and field epidemiological survey data of dengue fever in Shenzhen City, and the temporal, regional and population distributions of dengue fever cases, source of acquire dengue virus infections, disease diagnosis and treatment and outbreaks were analyzed. The dengue virus nucleic acid was tested and the serotypes of dengue virus were characterized using real-time quantitative reverse transcription PCR (RT-qPCR) assay, and the dengue virus gene was sequenced using next-generation sequencing (NGS). In addition, the surveillance on the density of Aedes albopictus was performed using Breteau index (BI) and mosquito oviposition index (MOI). Results A total of 1 735 dengue fever cases were reported in Shenzhen City in 2024, including 952 local cases and 783 imported cases. Most imported dengue fever cases acquired infections from eight cities of Foshan, Guangzhou, Zhongshan, Jiangmen, Dongguan, Zhaoqing, Huizhou, and Zhuhai in the Pearl River Delta region (664 cases, 84.8% of total imported cases) into Baoan, Longgang, and Nanshan districts. The epidemic exhibited an early onset and rapid progression, peaking during the period between September and November (1 632 cases, 94.1% of total cases), and dengue fever cases were distributed across 73 subdistricts in 10 districts, with most cases reported in densely populated central and western regions. The dengue fever cases had a male-to-female ratio of 1.9∶1.0, and a median age of 37 (21) years, with a higher median age among local cases than among imported cases [40 (20) years vs. 33(15) years; Z = -10.30, P < 0.05]. Housework, unemployment, workers, and business service were predominant occupations (1 405 cases, 81.0% of total cases), and there was a significant difference in the constituent ratio of occupations between local and imported cases (χ2 = 92.30, P < 0.05). Among the 1 735 dengue fever cases, the median duration from onset to definitive diagnosis was 3.3 (2.9) days, and 1 686 cases (97.2%) were identified in healthcare facilities, with a low rate of hospitalization and isolation seen in 1 701 inpatients with available epidemiological data (485 cases, 28.5% of total inpatients). A total of 29 outbreaks of dengue fever occurred in Shenzhen City across 2024, which primarily in construction sites (27 outbreaks, 93.1% of total). Dengue virus type I was the dominant serotype causing dengue fever in Shenzhen City in 2024. Sequencing showed that the genomes of dengue virus from multiple dengue fever cases in Shenzhen City shared a high sequence homology with those from cities neighboring Shenzhen City, and there might be intra-city transmission of dengue virus among multiple construction sites in Shenzhen City. The Aedes albopictus density was significantly higher in Shenzhen City in 2024 than in 2023, peaking from May to September. The annual MOI values ranged from 0.9 to 14.0, and the BI values ranged from 0.6 to 6.0. Conclusions The overall epidemic of dengue fever was severe in Shenzhen City in 2024, which was greatly affected by case importation from neighboring cities, construction sites-centered local transmission, and the effectives of routine mosquito vector control was not satisfactory. Integrated dengue fever control measures should be implemented, focusing on regional joint prevention and control mechanisms, capacity building for mosquito vector control, addressing challenges in epidemic containment at construction sites, and strengthening case detection and management systems.


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