1.DING Ying's Clinical Experience in Treating Systemic Lupus Erythematosus Based on Differentiation of Yin Fire,Latent Fire,and Fire Toxin
Hongji WU ; Min GAO ; Yan XU ; Xuejun LI ; Jiexin SU ;
Journal of Traditional Chinese Medicine 2026;67(4):365-369
This paper summarizes Professor DING Ying's clinical experience in the treatment of systemic lupus erythematosus (SLE) through differentiation of three states, yin fire, latent fire, and fire toxin. It is proposed that fire pathogenic factors constitute a key pathological element running throughout the entire disease course of SLE. The evolution of its pathogenesis centers on these three states, spleen-kidney deficiency with the initial emergence of yin fire as the onset of disease, damage to yin by medicinal toxicity with internal blazing of latent fire as the driver of disease progression, and the interlocking of blood stasis and heat with intense scorching by fire toxin as the critical factor leading to severe and life-threatening conditions. Corresponding to these three stages, targeted prescriptions are formulated, Jiuwei Yishen Formulation (九味益肾方) to tonify the spleen and kidney, raise yang, and disperse fire; Ziyin Xiehuo Decoction (滋阴泄火汤) to nourish yin and fluids while clearing latent fire; and Santeng Changluo Jiedu Decoction (三藤畅络解毒汤) to dispel blood stasis, unblock the collaterals, detoxify, and restrain fire. This staged and integrated therapeutic strategy aims to address both root and branch and to achieve overall regulation, providing valuable guidance for the clinical differentiation and treatment of SLE.
2.Preliminary study of three disinfectants on the surface of avian embryo eggs without specific pathogen
Wenyue KOU ; Jie LI ; Luyao HAO ; Ge ZHANG ; Yan ZHANG ; Jiachun LI ; Xuejun HE ; Mei QIU ; Zhe JIAN ; Yi ZHANG
Drug Standards of China 2025;26(4):417-423
Objective:To screen out the disinfection procedure and disinfectant suitable for the actual production of specific pathogen free(SPF)chicken embryo eggs,so as to ensure the disinfection effect of specific pathogen free(SPF)chicken embryo eggs in vaccine production.Methods:This study compares the microbial counting methods of soaking,swabbing with cotton swabs and pouring after thin-film filtration for SPF chicken embryo eggs in a GMP production workshop,and selects the most suitable method for SPF chicken embryo egg microbial counting.Experi-mental groups A,B,and C use self-prepared concentrations of 1∶50 sporicidal agent dilution solution,1∶128 alka-line phenol salt dilution solution,and ready-to-use compound quaternary ammonium disinfectant(sterile),respec-tively,and follow the actual disinfection procedures in the workshop to disinfect and sample the surfaces of SPF chicken embryo eggs entering different cleanliness grades,while using sterile water instead of disinfectant as the control group.The average bactericidal rate is calculated by recording the number of colonies and monitoring the viability of chicken embryo cells using microbial culture,and the disinfection effect of the three disinfectants on SPF chicken embryo eggs is evaluated.Results:The comparison of the results from the three methods shows that the method of sampling SPF chicken embryo eggs by immersion and then counting the microbial colonies through membrane filtration is superior to the other two methods.The final cleaning rate of the control group,which used sterilized injection water to clean the SPF chicken embryo eggs,was 91.67%to 96.97%,while the final steriliza-tion rate of the experimental group,which used the above three disinfectants to disinfect the SPF chicken embryo eggs,was 100.00%.By comparing the cell counts of the experimental group and the control group,it was found that the live cell density of the control group was(6.03-6.25)× 105 cells·mL-1,and that of the experimental groups A-C was(6.08-6.17)× 105 cells·mL-1,(5.99-6.25)× 105 cells·mL-1,and(5.87-6.21)× 105 cells·mL-1 respectively;the cell viability of the control group was 90.33%to 91.35%,and that of the experi-mental groups A-C was 88.25%to 92.12%,89.45%to 93.59%,and 88.02%to 92.89%respectively.Through statistical analysis,it was found that the P values of all experimental groups compared with the control group were greater than 0.05,indicating no statistically significant difference.Conclusion:By comparing the dis-infection effects,cell density and cell viability of the three disinfectants and comprehensively considering factors such as cost and risk of the three disinfectants,1∶50 sporicide dilution,1∶128 alkaline phenolate dilution and ready-to-use compound quaternary ammonium salt disinfectant(sterile)can all be used for the daily surface disin-fection of SPF chicken embryo eggs in the production workshop.The selection of an appropriate disinfectant should be based on specific application scenarios and requirements.
3.Effect of Necrostatin-1 alleviates immune checkpoint inhibitor-associated myocarditis and related mechanism
Xuejun WANG ; Yihui SHEN ; Xiaozhen HE ; Jian ZHANG ; Yan WANG ; Leilei CHENG
Chinese Journal of Clinical Medicine 2025;32(6):1000-1009
Objective To investigate the improvement effect of Necrostatin-1 (Nec-1) on mouse models with immune checkpoint inhibitor (ICI) -associated myocarditis (ICIAM) and potential mechanism. Methods Ten male BALB/c mice aged 6-8 weeks were selected to construct the ICIAM models. The echocardiography and serum myocardial injury markers were used to assess cardiac function of mice. The levels of inflammatory markers including tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) were detected by enzyme-linked immunosorbent assay (ELISA) and quantitative real-time polymerase chain reaction (qRT-PCR), respectively. Hematoxylin-eosin (HE) staining was used to evaluate myocardial inflammation, and Masson staining was used to evaluate myocardial fibrosis. The expressions of myocardial necroptosis proteins including receptor-interacting protein kinase 1 (RIP1), RIP3, mixed lineage kinase domain-like protein (MLKL) and their phosphorylated forms were detected by Western blotting. The spleen lymphocytes were extracted and co-cultured with HL-1 cell line. Cell viability was measured by cell counting kit-8 (CCK-8). The release of reactive oxygen species (ROS) and changes of mitochondrial membrane potential were observed. RIP1, RIP3, MLKL and their phosphorylated forms were determined. The levels of markers of oxidative stress, including malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), were measured. Results Nec-1 significantly improved the cardiac function injury of mice induced by ICI, and inhibited the release of TNF-α and IL-1β in plasma of ICIAM mice (P<0.001); inhibited expressions of phosphorylated RIP1, RIP3 and MLKL (P<0.05); decreased MDA activity, and increased SOD and GSH-Px activity (P<0.001). In HL-1 cells, Nec-1 intervention inhibited the RIP1-RIP3-MLKL pathway (P<0.05), improved decrease of the cell viability induced by lymphocytes (P<0.001), decreased ROS release, increased mitochondrial membrane potential, inhibited MDA activity, and increased SOD and GSH-Px activities (P<0.001). Conclusions Necroptosis plays an important role in the occurrence and development of ICIAM,but Nec-1 could alleviate the progression of ICIAM by inhibiting necroptosis induced by oxidative stress in cardiomyocytes; RIP1 maybe a new target in treatment of ICIAM.
4.Consensus on diagnosis and treatment of adolescent idiopathic scoliosis
Yushu BAI ; Kai CHEN ; Jie SHAO ; Xiao ZHAI ; Ming CHEN ; Weishi LI ; Jianzhong XU ; Bangping QIAN ; Zezhang ZHU ; Feng ZHU ; Chunde LI ; Jianguo ZHANG ; Jianxiong SHEN ; Dingjun HAO ; Xiaodong ZHU ; Junlin YANG ; Xuejun ZHANG ; Xuesong ZHANG ; Fangyi ZHANG ; Qijie WANG ; Wenzhi ZHANG ; Yong HAI ; Jianhua ZHAO ; Yong QIU ; Yan WANG ; Guixing QIU ; Ming LI
Academic Journal of Naval Medical University 2025;46(3):291-300
Adolescent idiopathic scoliosis(AIS)is a complex three-dimensional deformity involving coronal,sagittal,and axial planes,with a prevalence that should not be overlooked.With advancements in technology and in-depth research,an increasing number of hospitals and physicians are exploring standardized diagnostic and treatment approaches for AIS.Comprehensive and in-depth understanding is required for AIS,including its etiology,screening and diagnosis,classification,assessment and examination,treatment options,exploration of current focus,and evaluation of quality of life.Such understanding ensures that the diagnostic and treatment are scientific,standardized,and timely.Based on the principles of evidence-based medicine,a consensus on the diagnosis and treatment of AIS is reached after multiple discussions among spinal surgery experts,aiming to provide reference and guidance for clinical practice.
5.Preliminary study of three disinfectants on the surface of avian embryo eggs without specific pathogen
Wenyue KOU ; Jie LI ; Luyao HAO ; Ge ZHANG ; Yan ZHANG ; Jiachun LI ; Xuejun HE ; Mei QIU ; Zhe JIAN ; Yi ZHANG
Drug Standards of China 2025;26(4):417-423
Objective:To screen out the disinfection procedure and disinfectant suitable for the actual production of specific pathogen free(SPF)chicken embryo eggs,so as to ensure the disinfection effect of specific pathogen free(SPF)chicken embryo eggs in vaccine production.Methods:This study compares the microbial counting methods of soaking,swabbing with cotton swabs and pouring after thin-film filtration for SPF chicken embryo eggs in a GMP production workshop,and selects the most suitable method for SPF chicken embryo egg microbial counting.Experi-mental groups A,B,and C use self-prepared concentrations of 1∶50 sporicidal agent dilution solution,1∶128 alka-line phenol salt dilution solution,and ready-to-use compound quaternary ammonium disinfectant(sterile),respec-tively,and follow the actual disinfection procedures in the workshop to disinfect and sample the surfaces of SPF chicken embryo eggs entering different cleanliness grades,while using sterile water instead of disinfectant as the control group.The average bactericidal rate is calculated by recording the number of colonies and monitoring the viability of chicken embryo cells using microbial culture,and the disinfection effect of the three disinfectants on SPF chicken embryo eggs is evaluated.Results:The comparison of the results from the three methods shows that the method of sampling SPF chicken embryo eggs by immersion and then counting the microbial colonies through membrane filtration is superior to the other two methods.The final cleaning rate of the control group,which used sterilized injection water to clean the SPF chicken embryo eggs,was 91.67%to 96.97%,while the final steriliza-tion rate of the experimental group,which used the above three disinfectants to disinfect the SPF chicken embryo eggs,was 100.00%.By comparing the cell counts of the experimental group and the control group,it was found that the live cell density of the control group was(6.03-6.25)× 105 cells·mL-1,and that of the experimental groups A-C was(6.08-6.17)× 105 cells·mL-1,(5.99-6.25)× 105 cells·mL-1,and(5.87-6.21)× 105 cells·mL-1 respectively;the cell viability of the control group was 90.33%to 91.35%,and that of the experi-mental groups A-C was 88.25%to 92.12%,89.45%to 93.59%,and 88.02%to 92.89%respectively.Through statistical analysis,it was found that the P values of all experimental groups compared with the control group were greater than 0.05,indicating no statistically significant difference.Conclusion:By comparing the dis-infection effects,cell density and cell viability of the three disinfectants and comprehensively considering factors such as cost and risk of the three disinfectants,1∶50 sporicide dilution,1∶128 alkaline phenolate dilution and ready-to-use compound quaternary ammonium salt disinfectant(sterile)can all be used for the daily surface disin-fection of SPF chicken embryo eggs in the production workshop.The selection of an appropriate disinfectant should be based on specific application scenarios and requirements.
6.Yunpi Huatan Tongqiao Prescription Regulates Microglial Cell Polarization Phenotype to Improve Inflammation and Cognitive Impairment in OSA Mice by Down-regulating Glycolysis
Wenyan PU ; Anqi LIU ; Yan LIN ; Xuejun LI ; Hongyu ZHANG ; Zhiyan JIANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(22):35-42
ObjectiveTo validate the efficacy of Yunpi Huatan Tongqiao prescription (YHTP) in down-regulating glycolysis to modulate microglia phenotype and improve inflammation and cognitive memory deficits in obstructive sleep apnea (OSA) mice. MethodForty-eight male Balb/C mice were randomly divided into a normal group, a model group, a montelukast sodium group (30 mg·kg-1), and low, medium, and high dose groups of YHTP (8.28, 16.56, and 33.12 g·kg-1), with 8 mice in each group. All groups, except the normal group, received intraperitoneal injections of lipopolysaccharide (LPS) and underwent chronic intermittent hypoxia (CIH) modeling for 4 weeks. Subsequently, the mice were treated with medications for 4 weeks and then sampled. Animal behavioral tests assessed memory impairment due to hypoxia. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to measure mRNA expression levels of M1-associated inflammatory factors interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and markers such as T lymphocyte activation antigen (CD86) and inducible nitric oxide synthase (iNOS), as well as M2-associated inflammatory factors interleukin-10 (IL-10), transforming growth factor-β (TGF-β), and the marker mannose receptor (CD206) in hippocampal tissue. Western blot was employed to detect differences in the expression of M1 and M2 microglia phenotypic markers (CD86, CD206) and glycolysis-related proteins glucose transporter type 1 (GLUT1), hexokinase 2 (HK2), phosphofructokinase (PFKM), pyruvate kinase 2 (PKM2), and monocarboxylic acid transporter 1 (MCT1). ResultBehavioral tests showed that compared to the results in the normal group, the Y-maze autonomous alternation rate was significantly reduced in the model group (P<0.01). The latency time for the target hole in the Barnes' maze during the training period (days 2, 3, 4) and testing period (days 5, 12) was significantly increased (P<0.05, P<0.01). M1 glial cell markers CD86 and iNOS, as well as inflammatory factors IL-1β and TNF-α mRNA, were significantly elevated (P<0.01). In contrast, the mRNA expression of M2 glial cell markers IL-10, CD206, and TGF-β was significantly reduced (P<0.01). The protein expression of glycolytic proteins HK2, PFKM, PKM2, MCT1, and the M1 marker CD86 was significantly increased (P<0.05, P<0.01), while M2 marker CD206 protein expression was significantly decreased (P<0.01). Compared to the results in the model group, the Y-maze autonomous alternation rate was significantly increased in the medium and high dose groups of YHTP (P<0.05, P<0.01). The latency time for the target hole during the training (day 4) and testing periods (days 5, 12) was significantly reduced (P<0.01). Real-time PCR results indicated that mRNA expression levels of M1-related pro-inflammatory factors in the hippocampal tissue were significantly reduced in the low, medium, and high dose groups of YHTP (P<0.01), while M2-related inflammatory factors' mRNA expression was significantly increased (P<0.01). Western blot results showed that in the medium and high dose groups of YHTP, the expression of the M1 marker CD86 in the hippocampus was reduced, whereas the expression of the M2 marker CD206 was significantly increased (P<0.01), with a significant decrease in the expression of glycolysis-related proteins (P<0.01). ConclusionYHTP can improve inflammation and cognitive impairment induced by hypoxia in OSA model mice. This is achieved by downregulating glycolysis in brain microglia, inhibiting M1 activation, reducing pro-inflammatory factor release, and promoting M2 activation, thereby exerting a therapeutic effect on inflammation and cognitive impairment caused by OSA.
7.Surveillance of bacterial resistance in tertiary hospitals across China:results of CHINET Antimicrobial Resistance Surveillance Program in 2022
Yan GUO ; Fupin HU ; Demei ZHU ; Fu WANG ; Xiaofei JIANG ; Yingchun XU ; Xiaojiang ZHANG ; Fengbo ZHANG ; Ping JI ; Yi XIE ; Yuling XIAO ; Chuanqing WANG ; Pan FU ; Yuanhong XU ; Ying HUANG ; Ziyong SUN ; Zhongju CHEN ; Jingyong SUN ; Qing CHEN ; Yunzhuo CHU ; Sufei TIAN ; Zhidong HU ; Jin LI ; Yunsong YU ; Jie LIN ; Bin SHAN ; Yunmin XU ; Sufang GUO ; Yanyan WANG ; Lianhua WEI ; Keke LI ; Hong ZHANG ; Fen PAN ; Yunjian HU ; Xiaoman AI ; Chao ZHUO ; Danhong SU ; Dawen GUO ; Jinying ZHAO ; Hua YU ; Xiangning HUANG ; Wen'en LIU ; Yanming LI ; Yan JIN ; Chunhong SHAO ; Xuesong XU ; Wei LI ; Shanmei WANG ; Yafei CHU ; Lixia ZHANG ; Juan MA ; Shuping ZHOU ; Yan ZHOU ; Lei ZHU ; Jinhua MENG ; Fang DONG ; Zhiyong LÜ ; Fangfang HU ; Han SHEN ; Wanqing ZHOU ; Wei JIA ; Gang LI ; Jinsong WU ; Yuemei LU ; Jihong LI ; Qian SUN ; Jinju DUAN ; Jianbang KANG ; Xiaobo MA ; Yanqing ZHENG ; Ruyi GUO ; Yan ZHU ; Yunsheng CHEN ; Qing MENG ; Shifu WANG ; Xuefei HU ; Wenhui HUANG ; Juan LI ; Quangui SHI ; Juan YANG ; Abulimiti REZIWAGULI ; Lili HUANG ; Xuejun SHAO ; Xiaoyan REN ; Dong LI ; Qun ZHANG ; Xue CHEN ; Rihai LI ; Jieli XU ; Kaijie GAO ; Lu XU ; Lin LIN ; Zhuo ZHANG ; Jianlong LIU ; Min FU ; Yinghui GUO ; Wenchao ZHANG ; Zengguo WANG ; Kai JIA ; Yun XIA ; Shan SUN ; Huimin YANG ; Yan MIAO ; Mingming ZHOU ; Shihai ZHANG ; Hongjuan LIU ; Nan CHEN ; Chan LI ; Jilu SHEN ; Wanqi MEN ; Peng WANG ; Xiaowei ZHANG ; Yanyan LIU ; Yong AN
Chinese Journal of Infection and Chemotherapy 2024;24(3):277-286
Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5%were gram-positive and 70.5%were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3%,76.7%and 77.9%,respectively.Overall,94.0%of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8%of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2%in the isolates from children and 95.7%in the isolates from adults.The resistance rate to carbapenems was lower than 13.1%in most Enterobacterales species except for Klebsiella,21.7%-23.1%of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1%to 13.3%.The prevalence of meropenem-resistant strains decreased from 23.5%in 2019 to 18.0%in 2022 in Pseudomonas aeruginosa,and decreased from 79.0%in 2019 to 72.5%in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.
8.Construction and application of a multi-drug resistance bacteria information management system/
Bo WU ; Yuying YAN ; Liying SONG ; Xuan YANG ; Xuejun SHANGGUAN ; Rong LIN
Chinese Journal of Nursing 2024;59(16):1942-1947
Objective To construct and apply a multidrug-resistant bacteria information management system,and evaluate its effectiveness and accuracy in the management of patients with multidrug-resistant bacteria infection.Methods A system construction team was established to develop a multidrug-resistant bacteria information management system,which includes 4 modules:early warning,execution,monitoring,and statistical decision-making.Patients with positive detection of multidrug-resistant bacteria admitted to a tertiary A obstetrics and gynecology hospital in Zhejiang Province from January to December 2022,members of the system construction team,and clinical medical staff were selected as the research subjects.The execution efficiency of multidrug-resistant bacteria management,as well as the system's accuracy,usability,and satisfaction were compared before(January to June 2022)and after(July to December 2022)the application of the system.Results After the implementation of the system,the immediate feedback rate of multidrug-resistant bacteria early warning information increased from 62.87%to 89.78%;the rate of issuing isolation medical orders rose from 61.07%to 93.33%;the accuracy of the implementation of isolation measures for patients increased from 66.67%to 98.01%;all differences are statistically significant(P<0.001).The accuracy rate of the system in making decisions is 88.44%;the usability score given by medical staff for the system is 44.04 points,and the satisfaction score of the system construction team members and medical staff to the system is 121.25 points,both at a high level.Conclusion The multidrug-resistant information management system is equipped with features such as immediate alerts,multi-channel notifications,infection control department supervision,and auxiliary decision-making,which can provide medical staff with accurate decision reports.Preliminary application results show that the system has a high level of accuracy and good usability.
9.Antimicrobial resistance profile of clinical isolates in hospitals across China:report from the CHINET Antimicrobial Resistance Surveillance Program,2023
Yan GUO ; Fupin HU ; Demei ZHU ; Fu WANG ; Xiaofei JIANG ; Yingchun XU ; Xiaojiang ZHANG ; Fengbo ZHANG ; Ping JI ; Yi XIE ; Yuling XIAO ; Chuanqing WANG ; Pan FU ; Yuanhong XU ; Ying HUANG ; Ziyong SUN ; Zhongju CHEN ; Jingyong SUN ; Qing CHEN ; Yunzhuo CHU ; Sufei TIAN ; Zhidong HU ; Jin LI ; Yunsong YU ; Jie LIN ; Bin SHAN ; Yunmin XU ; Sufang GUO ; Yanyan WANG ; Lianhua WEI ; Keke LI ; Hong ZHANG ; Fen PAN ; Yunjian HU ; Xiaoman AI ; Chao ZHUO ; Danhong SU ; Dawen GUO ; Jinying ZHAO ; Hua YU ; Xiangning HUANG ; Wen'en LIU ; Yanming LI ; Yan JIN ; Chunhong SHAO ; Xuesong XU ; Wei LI ; Shanmei WANG ; Yafei CHU ; Lixia ZHANG ; Juan MA ; Shuping ZHOU ; Yan ZHOU ; Lei ZHU ; Jinhua MENG ; Fang DONG ; Zhiyong LÜ ; Fangfang HU ; Han SHEN ; Wanqing ZHOU ; Wei JIA ; Gang LI ; Jinsong WU ; Yuemei LU ; Jihong LI ; Qian SUN ; Jinju DUAN ; Jianbang KANG ; Xiaobo MA ; Yanqing ZHENG ; Ruyi GUO ; Yan ZHU ; Yunsheng CHEN ; Qing MENG ; Shifu WANG ; Xuefei HU ; Hua FANG ; Penghui ZHANG ; Bixia YU ; Ping GONG ; Haixia SHI ; Kaizhen WEN ; Yirong ZHANG ; Xiuli YANG ; Yiqin ZHAO ; Longfeng LIAO ; Jinhua WU ; Hongqin GU ; Lin JIANG ; Meifang HU ; Wen HE ; Jiao FENG ; Lingling YOU ; Dongmei WANG ; Dong'e WANG ; Yanyan LIU ; Yong AN ; Wenhui HUANG ; Juan LI ; Quangui SHI ; Juan YANG ; Abulimiti REZIWAGULI ; Lili HUANG ; Xuejun SHAO ; Xiaoyan REN ; Dong LI ; Qun ZHANG ; Xue CHEN ; Rihai LI ; Jieli XU ; Kaijie GAO ; Lu XU ; Lin LIN ; Zhuo ZHANG ; Jianlong LIU ; Min FU ; Yinghui GUO ; Wenchao ZHANG ; Zengguo WANG ; Kai JIA ; Yun XIA ; Shan SUN ; Huimin YANG ; Yan MIAO ; Jianping WANG ; Mingming ZHOU ; Shihai ZHANG ; Hongjuan LIU ; Nan CHEN ; Chan LI ; Cunshan KOU ; Shunhong XUE ; Jilu SHEN ; Wanqi MEN ; Peng WANG ; Xiaowei ZHANG ; Xiaoyan ZENG ; Wen LI ; Yan GENG ; Zeshi LIU
Chinese Journal of Infection and Chemotherapy 2024;24(6):627-637
Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in healthcare facilities in major regions of China in 2023.Methods Clinical isolates collected from 73 hospitals across China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2023 Clinical & Laboratory Standards Institute (CLSI) breakpoints.Results A total of 445199 clinical isolates were collected in 2023,of which 29.0% were gram-positive and 71.0% were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species (excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi) (MRSA,MRSE and MRCNS) was 29.6%,81.9% and 78.5%,respectively.Methicillin-resistant strains showed significantly higher resistance rates to most antimicrobial agents than methicillin-susceptible strains (MSSA,MSSE and MSCNS).Overall,92.9% of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 91.4% of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis had significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 93.1% in the isolates from children and and 95.9% in the isolates from adults.The resistance rate to carbapenems was lower than 15.0% for most Enterobacterales species except for Klebsiella,22.5% and 23.6% of which were resistant to imipenem and meropenem,respectively .Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.6% to 10.0%.The resistance rate to imipenem and meropenem was 21.9% and 17.4% for Pseudomonas aeruginosa,respectively,and 67.5% and 68.1% for Acinetobacter baumannii,respectively.Conclusions Increasing resistance to the commonly used antimicrobial agents is still observed in clinical bacterial isolates.However,the prevalence of important crabapenem-resistant organisms such as crabapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a slightly decreasing trend.This finding suggests that strengthening bacterial resistance surveillance and multidisciplinary linkage are important for preventing the occurrence and development of bacterial resistance.
10.Antimicrobial resistance profile of clinical isolates in hospitals across China:report from the CHINET Antimicrobial Resistance Surveillance Program,2023
Yan GUO ; Fupin HU ; Demei ZHU ; Fu WANG ; Xiaofei JIANG ; Yingchun XU ; Xiaojiang ZHANG ; Fengbo ZHANG ; Ping JI ; Yi XIE ; Yuling XIAO ; Chuanqing WANG ; Pan FU ; Yuanhong XU ; Ying HUANG ; Ziyong SUN ; Zhongju CHEN ; Jingyong SUN ; Qing CHEN ; Yunzhuo CHU ; Sufei TIAN ; Zhidong HU ; Jin LI ; Yunsong YU ; Jie LIN ; Bin SHAN ; Yunmin XU ; Sufang GUO ; Yanyan WANG ; Lianhua WEI ; Keke LI ; Hong ZHANG ; Fen PAN ; Yunjian HU ; Xiaoman AI ; Chao ZHUO ; Danhong SU ; Dawen GUO ; Jinying ZHAO ; Hua YU ; Xiangning HUANG ; Wen'en LIU ; Yanming LI ; Yan JIN ; Chunhong SHAO ; Xuesong XU ; Wei LI ; Shanmei WANG ; Yafei CHU ; Lixia ZHANG ; Juan MA ; Shuping ZHOU ; Yan ZHOU ; Lei ZHU ; Jinhua MENG ; Fang DONG ; Zhiyong LÜ ; Fangfang HU ; Han SHEN ; Wanqing ZHOU ; Wei JIA ; Gang LI ; Jinsong WU ; Yuemei LU ; Jihong LI ; Qian SUN ; Jinju DUAN ; Jianbang KANG ; Xiaobo MA ; Yanqing ZHENG ; Ruyi GUO ; Yan ZHU ; Yunsheng CHEN ; Qing MENG ; Shifu WANG ; Xuefei HU ; Hua FANG ; Penghui ZHANG ; Bixia YU ; Ping GONG ; Haixia SHI ; Kaizhen WEN ; Yirong ZHANG ; Xiuli YANG ; Yiqin ZHAO ; Longfeng LIAO ; Jinhua WU ; Hongqin GU ; Lin JIANG ; Meifang HU ; Wen HE ; Jiao FENG ; Lingling YOU ; Dongmei WANG ; Dong'e WANG ; Yanyan LIU ; Yong AN ; Wenhui HUANG ; Juan LI ; Quangui SHI ; Juan YANG ; Abulimiti REZIWAGULI ; Lili HUANG ; Xuejun SHAO ; Xiaoyan REN ; Dong LI ; Qun ZHANG ; Xue CHEN ; Rihai LI ; Jieli XU ; Kaijie GAO ; Lu XU ; Lin LIN ; Zhuo ZHANG ; Jianlong LIU ; Min FU ; Yinghui GUO ; Wenchao ZHANG ; Zengguo WANG ; Kai JIA ; Yun XIA ; Shan SUN ; Huimin YANG ; Yan MIAO ; Jianping WANG ; Mingming ZHOU ; Shihai ZHANG ; Hongjuan LIU ; Nan CHEN ; Chan LI ; Cunshan KOU ; Shunhong XUE ; Jilu SHEN ; Wanqi MEN ; Peng WANG ; Xiaowei ZHANG ; Xiaoyan ZENG ; Wen LI ; Yan GENG ; Zeshi LIU
Chinese Journal of Infection and Chemotherapy 2024;24(6):627-637
Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in healthcare facilities in major regions of China in 2023.Methods Clinical isolates collected from 73 hospitals across China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2023 Clinical & Laboratory Standards Institute (CLSI) breakpoints.Results A total of 445199 clinical isolates were collected in 2023,of which 29.0% were gram-positive and 71.0% were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species (excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi) (MRSA,MRSE and MRCNS) was 29.6%,81.9% and 78.5%,respectively.Methicillin-resistant strains showed significantly higher resistance rates to most antimicrobial agents than methicillin-susceptible strains (MSSA,MSSE and MSCNS).Overall,92.9% of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 91.4% of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis had significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 93.1% in the isolates from children and and 95.9% in the isolates from adults.The resistance rate to carbapenems was lower than 15.0% for most Enterobacterales species except for Klebsiella,22.5% and 23.6% of which were resistant to imipenem and meropenem,respectively .Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.6% to 10.0%.The resistance rate to imipenem and meropenem was 21.9% and 17.4% for Pseudomonas aeruginosa,respectively,and 67.5% and 68.1% for Acinetobacter baumannii,respectively.Conclusions Increasing resistance to the commonly used antimicrobial agents is still observed in clinical bacterial isolates.However,the prevalence of important crabapenem-resistant organisms such as crabapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a slightly decreasing trend.This finding suggests that strengthening bacterial resistance surveillance and multidisciplinary linkage are important for preventing the occurrence and development of bacterial resistance.

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