1.Mechanism of Number 2 Feibi Recipe in Ameliorating Pulmonary Fibrosis in Mice by Modulating Endoplasmic Reticulum Stress in AT2 Cells to Attenuate Apoptosis and Promote Alveolar Repair
Yaodong CAI ; Jialing BEI ; Wan WEI ; Chengyan XU ; Yanli LIU ; Yong WANG ; Yang JIAO ; Yun CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):80-92
ObjectiveTo investigate the intervention mechanism of the traditional Chinese medicine Number 2 Feibi recipe (N2FBR) in idiopathic pulmonary fibrosis (IPF), focusing on its effects on endoplasmic reticulum (ER) stress, apoptosis, stemness maintenance, and regenerative capacity of alveolar type Ⅱ epithelial cells (AT2 cells), and to validate the modern translational pathway of the theory of "deficiency of Zong Qi leading to pulmonary atelectasis and atrophy". MethodsA mouse model of pulmonary fibrosis was induced by bleomycin (BLM). Mice were randomly divided into blank control, model, low-, and high-dose N2FBR intervention groups (9.1, 18.2 g·kg-1), and prednisolone intervention group (6.5 mg·kg-1). Pulmonary histopathological changes and collagen deposition were evaluated using hematoxylin-eosin (HE) and Masson's trichrome staining. Hydroxyproline (HYP) content was measured by the alkaline hydrolysis method. Lung coefficient and pulmonary function parameters were evaluated. The mRNA expression levels of fibrosis-related factors, including collagen type Ⅰ alpha 1 chain (ColIa1), alpha-smooth muscle actin (α-SMA), and tissue inhibitor of metalloproteinase 1 (Timp1), were detected by real-time polymerase chain reaction (Real-time PCR). Cell apoptosis was assessed using the terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. Apoptosis of AT2 cells was further evaluated by double immunofluorescence staining for surfactant protein C (SPC) and cysteine-aspartic protease-3 (Caspase-3). Endoplasmic reticulum (ER) stress in AT2 cells was examined by double staining for SPC and protein kinase R-like endoplasmic reticulum kinase (PERK). Ultrastructural changes of ER and lamellar bodies in AT2 cells were observed by transmission electron microscopy (TEM). The expression levels of key proteins involved in ER stress and apoptosis pathways, including PERK, activating transcription factor 4 (ATF4), and Caspase-3, were detected by Western blot. Double immunofluorescence staining of SPC and Ki-67 antigen (Ki-67) was performed to evaluate the proliferative capacity of AT2 cells. Lineage tracing technology (labeling AT2 cells with GFP) combined with Krt8 labeling was used to evaluate intermediate differentiation states, and morphological transformation of AT2 cells into alveolar type Ⅰ epithelial cells (AT1) was observed. ResultsBLM-induced mice exhibited significant structural disruption of lung tissue, increased collagen deposition, elevated lung coefficient, decreased pulmonary function, and upregulation of fibrosis-related factors (P<0.01). High-dose N2FBR treatment significantly ameliorated lung tissue damage and dysfunction, significantly reduced HYP content (P<0.01), and significantly downregulated ColIa1, α-SMA, and Timp1 expression (P<0.01). Apoptosis analysis showed increased TUNEL-positive and Caspase-3-positive AT2 cells in the model group, which was significantly reduced by high-dose N2FBR treatment. TEM revealed swollen ER structures in AT2 cells of the model group, which tended to return to normal following treatment. PERK protein staining analysis showed evident ER stress in AT2 cells of the model group, which were markedly alleviated in the treatment group. The expression levels of ER stress-related proteins PERK and ATF4, as well as the apoptosis-related protein Caspase-3, were elevated in the model group and significantly reduced after treatment. TEM also revealed disrupted lamellar body structures in the model group, which tended to recover in the treatment group. Regarding the proliferative capacity of AT2 cells, the proportion of Ki-67⁺SPC⁺ AT2 cells significantly increased in the treatment group (P<0.01). Lineage tracing showed that the proportion of keratin 8-positive green fluorescent protein-positive (Krt8⁺GFP⁺) cells increased in the model group, indicating differentiation arrest. This proportion was significantly reduced in the treatment group, and the morphology of GFP⁺ cells exhibited a flattened, extended shape, suggesting restored differentiation toward AT1 cells. ConclusionN2FBR alleviates ER stress in AT2 cells, reduces AT2 cell apoptosis, restores lamellar body structure and function, enhances proliferation activity, and alleviates differentiation arrest to promote differentiation into AT1 cells, thereby repairing the alveolar epithelium and effectively blocking the progression of pulmonary fibrosis. Its traditional Chinese medicine mechanism of "replenishing Zong Qi, harmonizing Qi and blood, and unblocking pulmonary meridians" closely aligns with the modern regulatory pathway of AT2 stem cells, providing a novel theoretical basis and experimental evidence for the intervention of IPF with traditional Chinese medicine.
2.Mechanism of Number 2 Feibi Recipe in Ameliorating Pulmonary Fibrosis in Mice by Modulating Endoplasmic Reticulum Stress in AT2 Cells to Attenuate Apoptosis and Promote Alveolar Repair
Yaodong CAI ; Jialing BEI ; Wan WEI ; Chengyan XU ; Yanli LIU ; Yong WANG ; Yang JIAO ; Yun CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):80-92
ObjectiveTo investigate the intervention mechanism of the traditional Chinese medicine Number 2 Feibi recipe (N2FBR) in idiopathic pulmonary fibrosis (IPF), focusing on its effects on endoplasmic reticulum (ER) stress, apoptosis, stemness maintenance, and regenerative capacity of alveolar type Ⅱ epithelial cells (AT2 cells), and to validate the modern translational pathway of the theory of "deficiency of Zong Qi leading to pulmonary atelectasis and atrophy". MethodsA mouse model of pulmonary fibrosis was induced by bleomycin (BLM). Mice were randomly divided into blank control, model, low-, and high-dose N2FBR intervention groups (9.1, 18.2 g·kg-1), and prednisolone intervention group (6.5 mg·kg-1). Pulmonary histopathological changes and collagen deposition were evaluated using hematoxylin-eosin (HE) and Masson's trichrome staining. Hydroxyproline (HYP) content was measured by the alkaline hydrolysis method. Lung coefficient and pulmonary function parameters were evaluated. The mRNA expression levels of fibrosis-related factors, including collagen type Ⅰ alpha 1 chain (ColIa1), alpha-smooth muscle actin (α-SMA), and tissue inhibitor of metalloproteinase 1 (Timp1), were detected by real-time polymerase chain reaction (Real-time PCR). Cell apoptosis was assessed using the terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. Apoptosis of AT2 cells was further evaluated by double immunofluorescence staining for surfactant protein C (SPC) and cysteine-aspartic protease-3 (Caspase-3). Endoplasmic reticulum (ER) stress in AT2 cells was examined by double staining for SPC and protein kinase R-like endoplasmic reticulum kinase (PERK). Ultrastructural changes of ER and lamellar bodies in AT2 cells were observed by transmission electron microscopy (TEM). The expression levels of key proteins involved in ER stress and apoptosis pathways, including PERK, activating transcription factor 4 (ATF4), and Caspase-3, were detected by Western blot. Double immunofluorescence staining of SPC and Ki-67 antigen (Ki-67) was performed to evaluate the proliferative capacity of AT2 cells. Lineage tracing technology (labeling AT2 cells with GFP) combined with Krt8 labeling was used to evaluate intermediate differentiation states, and morphological transformation of AT2 cells into alveolar type Ⅰ epithelial cells (AT1) was observed. ResultsBLM-induced mice exhibited significant structural disruption of lung tissue, increased collagen deposition, elevated lung coefficient, decreased pulmonary function, and upregulation of fibrosis-related factors (P<0.01). High-dose N2FBR treatment significantly ameliorated lung tissue damage and dysfunction, significantly reduced HYP content (P<0.01), and significantly downregulated ColIa1, α-SMA, and Timp1 expression (P<0.01). Apoptosis analysis showed increased TUNEL-positive and Caspase-3-positive AT2 cells in the model group, which was significantly reduced by high-dose N2FBR treatment. TEM revealed swollen ER structures in AT2 cells of the model group, which tended to return to normal following treatment. PERK protein staining analysis showed evident ER stress in AT2 cells of the model group, which were markedly alleviated in the treatment group. The expression levels of ER stress-related proteins PERK and ATF4, as well as the apoptosis-related protein Caspase-3, were elevated in the model group and significantly reduced after treatment. TEM also revealed disrupted lamellar body structures in the model group, which tended to recover in the treatment group. Regarding the proliferative capacity of AT2 cells, the proportion of Ki-67⁺SPC⁺ AT2 cells significantly increased in the treatment group (P<0.01). Lineage tracing showed that the proportion of keratin 8-positive green fluorescent protein-positive (Krt8⁺GFP⁺) cells increased in the model group, indicating differentiation arrest. This proportion was significantly reduced in the treatment group, and the morphology of GFP⁺ cells exhibited a flattened, extended shape, suggesting restored differentiation toward AT1 cells. ConclusionN2FBR alleviates ER stress in AT2 cells, reduces AT2 cell apoptosis, restores lamellar body structure and function, enhances proliferation activity, and alleviates differentiation arrest to promote differentiation into AT1 cells, thereby repairing the alveolar epithelium and effectively blocking the progression of pulmonary fibrosis. Its traditional Chinese medicine mechanism of "replenishing Zong Qi, harmonizing Qi and blood, and unblocking pulmonary meridians" closely aligns with the modern regulatory pathway of AT2 stem cells, providing a novel theoretical basis and experimental evidence for the intervention of IPF with traditional Chinese medicine.
3.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
;
Drugs, Chinese Herbal/therapeutic use*
4.Association of Longitudinal Change in Fasting Blood Glucose with Risk of Cerebral Infarction in a Patients with Diabetes.
Tai Yang LUO ; Xuan DENG ; Xue Yu CHEN ; Yu He LIU ; Shuo Hua CHEN ; Hao Ran SUN ; Zi Wei YIN ; Shou Ling WU ; Yong ZHOU ; Xing Dong ZHENG
Biomedical and Environmental Sciences 2025;38(8):926-934
OBJECTIVE:
To investigate the association between long-term glycemic control and cerebral infarction risk in patients with diabetes through a large-scale cohort study.
METHODS:
This prospective, community-based cohort study included 12,054 patients with diabetes. From 2006 to 2012, 38,272 fasting blood glucose (FBG) measurements were obtained from these participants. FBG trajectory patterns were generated using latent mixture modelling. Cox proportional hazards models were applied to assess the subsequent risk of cerebral infarction associated with different FBG trajectory patterns.
RESULTS:
At baseline, the mean age of the participants was 55.2 years. Four distinct FBG trajectories were identified based on FBG concentrations and their changes over the 6-year follow-up period. After a median follow-up of 6.9 years, 786 cerebral infarction events were recorded. Different trajectory patterns were associated with significantly varied outcome risks (Log-Rank P < 0.001). Compared with the low-stability group, Hazard Ratio ( HR) adjusted for potential confounders were 1.37 for the moderate-increasing group, 1.23 for the elevated-decreasing group, and 2.08 for the elevated-stable group.
CONCLUSION
Sustained high FBG levels were found to play a critical role in the development of ischemic stroke among patients with diabetes. Controlling FBG levels may reduce the risk of cerebral infarction.
Humans
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Cerebral Infarction/blood*
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Middle Aged
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Male
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Female
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Blood Glucose/analysis*
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Fasting/blood*
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Aged
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Prospective Studies
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Risk Factors
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Diabetes Mellitus/blood*
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Adult
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Proportional Hazards Models
5.Expert Consensus on Perioperative Nursing Care for Follicular Unit Extraction(2025)
Chunhua ZHANG ; Weiwei BIAN ; Congmin WANG ; Lin SHEN ; Yong MIAO ; Na LIU ; Shan JIA ; Junhong AN ; Hongxia WANG ; Dongmei ZHANG
Medical Journal of Peking Union Medical College Hospital 2025;16(6):1606-1613
To promote the standardization and normalization of perioperative care for follicular unit extraction(FUE) hair transplantation, ensure treatment efficacy, and align with advancements in the specialty, the Nursing Branch of the Chinese Association of Plastic and Aesthetics organized a panel of domestic experts. By integrating evidence-based medicine with clinical practice experience, and following thorough discussions, these experts developed the Clinical Practice
6.Phenotypic screening uncovered anti-myocardial fibrosis candidates using a novel 3D myocardial tissue under hypoxia.
Jingyu WANG ; Xiangning LIU ; Rongxin ZHU ; Ying SUN ; Boyang JIAO ; Keyan WANG ; Yong JIANG ; Yong WANG ; Chun LI ; Wei WANG
Acta Pharmaceutica Sinica B 2025;15(6):3008-3024
Myocardial fibrosis (MF) is a common pathological hallmark of cardiovascular diseases, reflecting shared mechanisms in their progression. However, the lack of reliable MF models that accurately mimic its pathogenesis has hindered drug discovery, highlighting the urgent need for more effective therapeutic agents. Herein, a novel contractile three-dimensional (3D) myocardial tissue model integrating cardiomyocytes, cardiac-fibroblasts, and bone marrow-derived macrophages in collagen hydrogel was developed to simulate the fibrotic changes of cardiovascular disease, and facilitate the screening of anti-MF compounds. The 3D myocardial tissue model exhibited precise, visualizable, and quantifiable contractile characteristics under hypoxia and drug interventions. 76 compounds extracted from the resins of Toxicodendron vernicifluum, a traditional Chinese medicine with clear clinical benefits for fibrotic diseases, were screened for anti-fibrotic activity. Using an in vitro 3D oxygen-glucose deprivation (OGD)-treated myocardial tissue model instead of a two-dimensional transforming growth factor-β treated cardiac-fibroblasts model, two candidates including LQ-40 and SQ-3 exert impressive anti-MF activity, which was further validated in left anterior descending coronary artery ligation-induced MF mouse model. The current results demonstrate the feasibility and advantage of the novel contractile 3D tissue model with multi-cell types in discovering candidates for MF, further stressing the great potential of regulating macrophages in the treatment of MF.
7.Intestinal barrier in chronic gut and liver diseases: Pathogenesis and therapeutic targets.
Yongxin ZHANG ; Yameng LIU ; Xinyu LIANG ; Yingquan WEN ; Jingjie ZHAO ; Yong HE ; Qing XIE ; Cen XIE
Acta Pharmaceutica Sinica B 2025;15(11):5515-5536
The intestinal barrier is the primary defense that separates the host from the external environment, possessing several crucial physiological functions, including nutrient digestion, absorption, and protection against potentially harmful dietary antigens and pathogenic microorganisms. Nevertheless, various factors, such as diet, medications, circadian rhythm disturbances, gut microbiota, microbial metabolites, and genetic predisposition, can disrupt the intestinal barrier. Such disruption may lead to bacterial translocation, subsequently triggering enterohepatic and systemic inflammation. Impaired intestinal barrier has been implicated in the pathogenesis of numerous diseases, particularly chronic gut and liver diseases. In this review, we will summarize the fundamental functions of intestinal barrier and discuss clinical correlations between intestinal barrier dysfunction and diseases such as colitis, colorectal cancer, and chronic liver diseases including metabolic dysfunction-associated steatohepatitis, alcohol-associated liver disease, and primary sclerosing cholangitis. Additionally, we will also highlight some potential therapeutic strategies aimed at restoring barrier integrity to improve disease management.
8.Expert consensus on imaging diagnosis and analysis of early correction of childhood malocclusion.
Zitong LIN ; Chenchen ZHOU ; Ziyang HU ; Zuyan ZHANG ; Yong CHENG ; Bing FANG ; Hong HE ; Hu WANG ; Gang LI ; Jun GUO ; Weihua GUO ; Xiaobing LI ; Guangning ZHENG ; Zhimin LI ; Donglin ZENG ; Yan LIU ; Yuehua LIU ; Min HU ; Lunguo XIA ; Jihong ZHAO ; Yaling SONG ; Huang LI ; Jun JI ; Jinlin SONG ; Lili CHEN ; Tiemei WANG
International Journal of Oral Science 2025;17(1):21-21
Early correction of childhood malocclusion is timely managing morphological, structural, and functional abnormalities at different dentomaxillofacial developmental stages. The selection of appropriate imaging examination and comprehensive radiological diagnosis and analysis play an important role in early correction of childhood malocclusion. This expert consensus is a collaborative effort by multidisciplinary experts in dentistry across the nation based on the current clinical evidence, aiming to provide general guidance on appropriate imaging examination selection, comprehensive and accurate imaging assessment for early orthodontic treatment patients.
Humans
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Malocclusion/diagnostic imaging*
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Child
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Consensus
9.Progress in animal model studies on chronic fatigue syndrome in military seafaring operations
Shuqi CAI ; Ying HE ; Wenhui WU ; Ruisang LIU ; Yunkai ZHANG ; Yong JIAO ; Xiaomeng REN
Journal of Environmental and Occupational Medicine 2025;42(3):373-378
Chronic fatigue syndrome (CFS) is a common problem in military maritime navigation, which greatly affects the safety of military missions. The use of animal models to carry out research on the mechanism of CFS and treatment measures is a common method. This paper systematically introduced the construction methods of CFS models such as single-factor and multi-factor models, summarized common evaluation indicators of CFS, including behavioral and biochemical indicators, and summed up key characteristics of CFS animal models in military oceanic navigation combined with common causes of CFS in military contexts, such as prolonged continuous work, high-intensity physical activity, sleep deprivation, psychological stress, and extreme environmental conditions. The key characteristics of the animal models included, but not limited to, chronic fatigue, sleep disorders, impaired cognitive function, psychological stress responses, and abnormal biochemical indicators. Furthermore, this article identified future research directions for CFS animal models in military oceanic navigation to enhance the application value of the models and provide robust support for the health protection and disease prevention of military personnel.
10.Changing distribution and antimicrobial resistance profiles of clinical isolates in children:results from the CHINET Antimicrobial Resistance Surveillance Program,2015-2021
Qing MENG ; Lintao ZHOU ; Yunsheng CHEN ; Yang YANG ; Fupin HU ; Demei ZHU ; Chuanqing WANG ; Aimin WANG ; Lei ZHU ; Jinhua MENG ; Hong ZHANG ; Chun WANG ; Fang DONG ; Zhiyong LÜ ; Shuping ZHOU ; Yan ZHOU ; Shifu WANG ; Fangfang HU ; Yingchun XU ; Xiaojiang ZHANG ; Zhaoxia ZHANG ; Ping JI ; Wei JIA ; Gang LI ; Kaizhen WEN ; Yirong ZHANG ; Yan JIN ; Chunhong SHAO ; Yong ZHAO ; Ping GONG ; Chao ZHUO ; Danhong SU ; Bin SHAN ; Yan DU ; Sufang GUO ; Jiao FENG ; Ziyong SUN ; Zhongju CHEN ; Wen'en LIU ; Yanming LI ; Xiaobo MA ; Yanping ZHENG ; Dawen GUO ; Jinying ZHAO ; Ruizhong WANG ; Hua FANG ; Lixia ZHANG ; Juan MA ; Jihong LI ; Zhidong HU ; Jin LI ; Yuxing NI ; Jingyong SUN ; Ruyi GUO ; Yan ZHU ; Yi XIE ; Mei KANG ; Yuanhong XU ; Ying HUANG ; Shanmei WANG ; Yafei CHU ; Hua YU ; Xiangning HUANG ; Lianhua WEI ; Fengmei ZOU ; Han SHEN ; Wanqing ZHOU ; Yunzhuo CHU ; Sufei TIAN ; Shunhong XUE ; Hongqin GU ; Xuesong XU ; Chao YAN ; Bixia YU ; Jinju DUAN ; Jianbang KANG ; Jiangshan LIU ; Xuefei HU ; Yunsong YU ; Jie LIN ; Yunjian HU ; Xiaoman AI ; Chunlei YUE ; Jinsong WU ; Yuemei LU
Chinese Journal of Infection and Chemotherapy 2025;25(1):48-58
Objective To understand the changing composition and antibiotic resistance of bacterial species in the clinical isolates from outpatient and emergency department(hereinafter referred to as outpatients)and inpatient children over time in various hospitals,and to provide laboratory evidence for rational antibiotic use.Methods The data on clinically isolated pathogenic bacteria and antimicrobial susceptibility of isolates from outpatients and inpatient children in the CHINET program from 2015 to 2021 were collected and analyzed.Results A total of 278 471 isolates were isolated from pediatric patients in the CHINET program from 2015 to 2021.About 17.1%of the strains were isolated from outpatients,primarily group A β-hemolytic Streptococcus,Escherichia coli,and Staphylococcus aureus.Most of the strains(82.9%)were isolated from inpatients,mainly SS.aureus,E.coli,and H.influenzae.The prevalence of methicillin-resistant S.aureus(MRSA)in outpatients(24.5%)was lower than that in inpatient children(31.5%).The MRSA isolates from outpatients showed lower resistance rates to the antibiotics tested than the strains isolated from inpatient children.The prevalence of vancomycin-resistant Enterococcus faecalis or E.faecium and penicillin-resistant S.pneumoniae was low in either outpatients or inpatient children.S.pneumoniae,β-hemolytic Streptococcus and S.viridans showed high resistance rates to erythromycin.The prevalence of erythromycin-resistant group A β-hemolytic Streptococcus was higher in outpatients than that in inpatient children.The prevalence of β-lactamase-producing H.influenzae showed an overall upward trend in children,but lower in outpatients(45.1%)than in inpatient children(59.4%).The prevalence of carbapenem-resistant Klebsiella pneumoniae(CRKpn),carbapenem-resistant Pseudomonas aeruginosa(CRPae)and carbapenem-resistant Acinetobacter baumannii(CRAba)was 14%,11.7%,47.8%in outpatients,but 24.2%,20.6%,and 52.8%in inpatient children,respectively.The prevalence of multidrug-resistant E.coli,K.pneumoniae,Proteus mirabilis,P.aeruginosa and A.baumannii strains was lower in outpatients than in inpatient children.The prevalence of fluoroquinolone-resistant E.coli,ESBLs-producing K.pneumoniae,ESBLs-producing P.mirabilis,carbapenem-resistant E.coli(CREco),CRKpn,and CRPae was lower in children in outpatients than in inpatient children,but the prevalence of CRAba in 2021 was higher than in inpatient children.Conclusions The distribution of clinical isolates from children is different between outpatients and inpatients.The prevalence of MRSA,ESBL,and CRO was higher in inpatient children than in outpatients.Antibiotics should be used rationally in clinical practice based on etiological diagnosis and antimicrobial susceptibility test results.Ongoing antimicrobial resistance surveillance and prevention and control of hospital infections are crucial to curbing bacterial resistance.

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