1.Status of Clinical Practice Guideline Information Platforms
Xueqin ZHANG ; Yun ZHAO ; Jie LIU ; Long GE ; Ying XING ; Simeng REN ; Yifei WANG ; Wenzheng ZHANG ; Di ZHANG ; Shihua WANG ; Yao SUN ; Min WU ; Lin FENG ; Tiancai WEN
Medical Journal of Peking Union Medical College Hospital 2025;16(2):462-471
Clinical practice guidelines represent the best recommendations for patient care. They are developed through systematically reviewing currently available clinical evidence and weighing the relative benefits and risks of various interventions. However, clinical practice guidelines have to go through a long translation cycle from development and revision to clinical promotion and application, facing problems such as scattered distribution, high duplication rate, and low actual utilization. At present, the clinical practice guideline information platform can directly or indirectly solve the problems related to the lengthy revision cycles, decentralized dissemination and limited application of clinical practice guidelines. Therefore, this paper systematically examines different types of clinical practice guideline information platforms and investigates their corresponding challenges and emerging trends in platform design, data integration, and practical implementation, with the aim of clarifying the current status of this field and providing valuable reference for future research on clinical practice guideline information platforms.
2.Pharmacokinetic interactions between empagliflozin and donafenib/lenvatinib in rats
Ying LI ; Zihan LIU ; Wenyu DU ; Jing AN ; Congyang DING ; Yue ZHAO ; Bingnan REN ; Zefang YU ; Yajing LI ; Zhanjun DONG
Journal of Clinical Hepatology 2025;41(9):1853-1860
ObjectiveTo investigate the influence of empagliflozin combined with donafenib or lenvatinib on the pharmacokinetic parameters of each drug, and to provide a reference for combined medication in clinical practice. MethodsA total of 48 healthy male Sprague-Dawley rats were divided into 8 groups: empagliflozin group 1 and 2, donafenib group, lenvatinib group, donafenib pretreatment+empagliflozin group, lenvatinib pretreatment + empagliflozin group, empagliflozin pretreatment+donafenib group, and empagliflozin pretreatment+lenvatinib group, with 6 rats in each group. The doses of empagliflozin, donafenib, and lenvatinib were 2.5 mg/kg, 40 mg/kg, and 1.2 mg/kg, respectively. The rats in the empagliflozin group, donafenib group, and lenvatinib group were given a blank solvent by gavage for 7 consecutive days, followed by a single dose of empagliflozin, donafenib, or lenvatinib on day 7 after the administration of the blank solvent; the rats in the pretreatment groups were given the pretreatment drug by gavage for 7 consecutive days, followed by a single dose of drug combination on day 7 after administration of the pretreatment drug. Blood samples were collected at different time points, and plasma was separated to measure the concentration of each drug. A validated ultra-performance liquid chromatography-tandem mass spectrometry method was used to measure the plasma concentrations of donafenib, lenvatinib, and empagliflozin, and a non-compartmental model was used to calculate the main pharmacokinetic parameters of each drug (area under the plasma concentration-time curve [AUC], time to peak [Tmax], peak concentration [Cmax], and half-life time [t1/2]). The independent-samples t test was used for comparison of normally distributed continuous data between two groups, and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups. ResultsCompared with the empagliflozin group, the donafenib pretreatment+empagliflozin group had significant increases in the AUC0-t and AUC0-∞ of empagliflozin (P=0.011 and 0.008), while the lenvatinib pretreatment+empagliflozin group had no significant change in the AUC of empagliflozin, with a slightly shorter Tmax (P=0.019). Compared with the donafenib group, the empagliflozin pretreatment+donafenib group had significant increases in the AUC0-t and AUC0-∞ of donafenib (P=0.027 and 0.025), as well as a significant increase in Cmax (P=0.015) and significant reductions in CLz/F and Vz/F (P=0.005 and 0.004); compared with the lenvatinib group, the empagliflozin pretreatment+lenvatinib group had a reduction in the t1/2 of lenvatinib by approximately 5 hours (P=0.002), with a trend of reduction in AUC0-t (P0.05). ConclusionEmpagliflozin combined with donafenib may alter the pharmacokinetic parameters of both drugs, leading to a significant increase in the exposure levels of both drugs, and efficacy and adverse reactions should be monitored during co-administration. There are no significant changes in the exposure levels of empagliflozin and lenvatinib during co-administration.
3. Study on relationship of target organ injury of mechanism and "structure-effect-dose" of Hedysari Radix during radiotherapy-chemotherapy induced
Sha-Sha ZHAO ; Hai HE ; Zi-Yang WANG ; Yao-Ying XING ; Yuan REN ; Jing SHAO ; Sha-Sha ZHAO ; Hai HE ; Zi-Yang WANG ; Yao-Ying XING ; Jing SHAO ; Yuan REN ; Jing SHAO ; Jing SHAO
Chinese Pharmacological Bulletin 2024;40(2):371-380
Aim To explore the possible mechanism of "component-target-pathway" of Radix Hedysari against target organ damage caused by radiotherapy and chemotherapy, and to verify the " dose-effect" relationship of the main active components. Methods TCMSP, Uniprot, Swiss Target Prediction, GeneCards, Cytoscape, Omicshare and other platforms were used for network pharmacology analysis. Autodock, Pymol and Ligplot were used for molecular docking. The water extract of Radix Hedysari was used for animal experiment verification. The contents of eight main components were determined by HPLC. Results Four active components, eight key targets and four key pathways of Radix Hedysari were identified to resist the damage of target organs caused by radiotherapy and chemotherapy. Molecular docking showed that formononetin and quercetin had good binding activity with HSP90AA1, naringenin and MAPK3, and ursolic acid and TP53. Animal experiments showed that gastrointestinal factors MTL and VIP increased significantly, liver and kidney factors Cr, BUN, AST and ALT decreased significantly, inflammatory factor IL-10 increased significantly and TNF-a decreased significantly. The content of ononm was the highest (2 . 884 8 µg • g "
4.Identification, expression and protein interaction analysis of Aux/IAA and ARF gene family in Senna tora L.
Zhao FENG ; Shi-peng LIU ; Rui-hua LÜ ; Rui-hua LÜ ; Xiao-chen HU ; Ming-ying ZHANG ; Ren-jun MAO ; Gang ZHANG
Acta Pharmaceutica Sinica 2024;59(3):751-763
The early response of plant auxin gene family
5.Role of post-translational modification of basic leucine zipper transcription factors in response to abiotic stresses in plants.
Ying LI ; Weidi ZHAO ; Jinghua YANG ; Jiaqi LI ; Songyang HAN ; Yuekun REN ; Changhong GUO
Chinese Journal of Biotechnology 2024;40(1):53-62
Abiotic stresses substantially affect the growth and development of plants. Plants have evolved multiple strategies to cope with the environmental stresses, among which transcription factors play an important role in regulating the tolerance to abiotic stresses. Basic leucine zipper transcription factors (bZIP) are one of the largest gene families. The stability and activity of bZIP transcription factors could be regulated by different post-translational modifications (PTMs) in response to various intracellular or extracellular stresses. This paper introduces the structural feature and classification of bZIP transcription factors, followed by summarizing the PTMs of bZIP transcription factors, such as phosphorylation, ubiquitination and small ubiquitin-like modifier (SUMO) modification, in response to abiotic stresses. In addition, future perspectives were prospected, which may facilitate cultivating excellent stress-resistant crop varieties by regulating the PTMs of bZIP transcription factors.
Basic-Leucine Zipper Transcription Factors/genetics*
;
Protein Processing, Post-Translational
;
Phosphorylation
;
Transcription Factors/genetics*
;
Stress, Physiological/genetics*
6.Identifying coronary artery bypass grafting patients at high risk for adverse long-term prognosis using serial health-related quality of life assessments
Juncheng WANG ; Hanning LIU ; Chao YUE ; Limeng YANG ; Kai YANG ; Yan ZHAO ; Huan REN ; Ying ZHANG ; Zhe ZHENG
Chinese Medical Journal 2024;137(9):1069-1077
Background::Patients who undergo coronary artery bypass grafting (CABG) are known to be at a significant risk of experiencing long-term adverse events, emphasizing the importance of regular assessments. Evaluating health-related quality of life (HRQoL) serves as a direct method to gauge prognosis. Our objective is to ascertain the prognostic significance of consecutive HRQoL assessments using the Physical Component Summary (PCS) and Mental Component Summary (MCS) derived from the Short-Form 36 (SF-36) health survey in CABG patients.Methods::The study population consisted of 433 patients who underwent isolated elective CABG at Fuwai Hospital between 2012 and 2013. SF-36 assessments were conducted during both the hospitalization period and follow-up. The primary endpoint of the study was all-cause mortality, while the secondary outcome was a composite measure including death, myocardial infarction, stroke, and repeat revascularization. We assessed the relationships between the PCS and MCS at baseline, as well as their changes during the first 6 months after the surgery (referred to as ΔPCS and ΔMCS, respectively), and the observed outcomes.Results::The patients were followed for an average of 6.28 years, during which 35 individuals (35/433, 8.1%) died. After adjusting for clinical variables, it was observed that baseline MCS scores (hazard ratio [HR] for a 1-standard deviation [SD] decrease, 1.57; 95% confidence interval [CI], 1.07–2.30) and ΔMCS (HR for a 1-SD decrease, 1.67; 95% CI, 1.09–2.56) were associated with all-cause mortality. However, baseline PCS scores and ΔPCS did not exhibit a significant relationship with all-cause mortality. Notably, there was a dose-response relationship observed between ΔMCS and the likelihood of all-cause mortality (HRs for the 2nd, 3rd and 4th quartiles compared to the 1st quartile, 0.33, 0.45 and 0.11, respectively).Conclusions::Baseline MCS and changes in MCS were independent predictors for long-term mortality of CABG. Better mental health status and recovery indicated better prognosis.
7.He's Yangchao recipe improves premature ovarian insufficiency by regulating mitochondrial biogenesis of granulose cells via ERβ/PGC1α/TFAM pathway
Chenyun MIAO ; Ying ZHAO ; Yun CHEN ; Ruye WANG ; Ning REN ; Qing LIU ; Xiaobing DOU ; Qin ZHANG
Journal of Zhejiang University. Medical sciences 2024;53(3):358-367
Objective:To investigate the effect of Chinese medicine He's Yangchao recipe on premature ovarian insufficiency(POI)and its relationship with mitochondrial function of ovarian granulose cells in an animal model.Methods:Thirty-six female C57BL/6J mice were randomly divided into blank control group,model group,low-,medium-and high-dose He's Yangchao recipe treatment group and coenzyme Q10(Q10)treatment group(positive control).The POI model was induced by a single intraperitoneal injection of cyclophosphamide(90 mg/kg).The animals were sacrificed after 21 days.Primary granulose cells were obtained from POI mice and treated with He's Yangchao recipe,ERβ inhibitor PHTPP,and He's Yangchao recipe+PHTPP in vitro for 24 h,respectively.Ovarian histopathological changes were observed by hematoxylin-eosin(HE)staining,ATP levels were detected by luciferase assay,mtDNA copy numbers were detected by quantitative reverse transcriptase-polymerase chain reaction(qRT-PCR),mitochondrial structure changes were observed by transmission electron microscopy,protein and mRNA expression levels of estrogen receptor β(ERβ),peroxisome proliferator-activated receptor γ coactivator 1α(PGC1α),mitochondrial transcription factor A(TFAM),and superoxide dismutase 2(SOD2)were detected by Western blotting and qRT-PCR.Results:The ovarian tissue in model group exhibited few secondary and tertiary follicles,whereas the He's Yangchao recipe groups and Q10 group had abundant secondary and tertiary follicles.Compared with the blank control group,ATP and mtDNA levels in model group decreased(P<0.01),mitochondrial crista disappeared or abnormal vacuolated structure increased;the protein and mRNA levels of ERβ,PGC1α,TFAM,and SOD2 decreased(all P<0.01).ATP production increased in granulose cells of high-dose He's Yangchao recipe group and Q10 group;mtDNA copy numbers increased(P<0.05 or P<0.01);abnormal mitochondrial structure was reduced;the protein and mRNA expressions of ERβ,PGC1α,TFAM,and SOD2 increased(P<0.05 or P<0.01).Compared with the PHTPP intervention group,the proportion of normal mitochondrial structure in the granulose cells of He's Yangchao recipe+PHTPP group was higher;ATP content increased(P<0.05 or P<0.01);mtDNA copy numbers increased(P<0.05 or P<0.01);the protein and mRNA expression of ERβ,PGC1α,TFAM and SOD2 increased(P<0.05 or P<0.01).Conclusions:He's Yangchao recipe can regulate mitochondrial biogenesis through ERβ/PGC1α/TFAM pathway to improve ovarian function in POI mice.
8.Effect and mechanism of microRNA-93-5p on ovarian granulosa cell proliferation in patients with polycystic ovary syndrome
Jingmin WANG ; Wei LI ; Jiamin YAN ; Kai ZHAO ; Hui ZHANG ; Ying LIU ; Yimeng REN ; Shuai JIN ; Dan HAN
Journal of Xinxiang Medical College 2024;41(6):548-553
Objective To investigate the effect of plasma microRNA(miR)-93-5p on ovarian granulosa cell proliferation in patients with polycystic ovary syndrome(PCOS)and its possible mechanism.Methods A total of 120 PCOS patients of childbearing period who were treated at Jiaozuo People's Hospital from January 2022 to January 2023 were selected as the PCOS group,and 18 healthy women of childbearing period who were physically examined at the same hospital during the same period were selected as the control group.The age,body weight and height of the subjects in the two groups were recorded,and the body mass index(BMI)was calculated.Fasting venous blood was collected from the subjects during the follicular phase of the natural menstrual cycle or the progesterone-induced withdrawal bleeding phase,and serum levels of luteinizing hormone(LH),follicle-stimulating hormone(FSH),total testosterone(TT),anti-Mullerian hormone(AMH),aspartate aminotransferase(AST),alanine aminotransferase(ALT),fasting insulin(FINS),and fasting blood glucose(FBG)were measured by using the electrochemical method;and the homeostasis model assessment of insulin resistance(HOMA-IR)was calculated.Quantitative real-time polymerase chain reaction(qRT-PCR)was used to detect the expression level of miR-93-5p in plasma of patients in the two groups.Human ovarian granulosa cells(KGN cells)in logarithmic growth phase were cultured in 6-well plates with 3 × 105 cells per well,and they were randomly divided into the miR-93-5p mimics group,LY294002+miR-93-5p group,AZD5363+miR-93-5p group,negative control(NC)group,and blank control group.The KGN cells in the miR-93-5p group were transfected with miR-93-5p mimics;the KGN cells in the LY294002+miR-93-5p group were transfected with miR-93-5p mimics and treated with 50 mmol·L-1 LY294002 one hour before transfection;the KGN cells in the AZD5363+miR-93-5p group were transfected with miR-93-5p mimics and treated with 50 μmol·L-1 AZD5363 one hour before transfection;the KGN cells in the NC group were transfected with the negative control plasmids;and the KGN cells in the blank control group were not treated at all.The expression of miR-93-5p in the KGN cells in each group was detected by qRT-PCR,and the proliferation of the KGN cells in each group was detected by cell counting kit-8.Results There was no significant differences in age,FSH,ALT,and AST levels of patients between the PCOS group and the blank control group(P>0.05).The BMI,TT,AMH,LH,FINS,FBG,and HOMA-IR of patients in the PCOS group were significantly higher than those in the blank control group(P<0.05).The relative expression of miR-93-5p in plasma of patients in the PCOS group was significantly higher than that in the blank control group(t=-5.549,P<0.001).miR-93-5p was moderately positively correlated with TT,FINS and HOMA-IR(r=0.434,0.622,0.586;P<0.001)and was mildly positively correlated with FBG and LH(r=0.398,0.398;P<0.001).The receiver operating characteristic curve showed that the optimal cut-off value for plasma miR-93-5p in diagnosing PCOS was 1.380,the area under the curve was 0.906(95%confidence interval:0.839-0.973,P<0.001),the sensitivity was 0.858,the specificity was 0.833,and the Youden index was 0.691.The relative expression of miR-93-5p in the KGN cells in the miR-93-5p mimics group,LY294002+miR-93-5p group and AZD5363+miR-93-5p group was significantly higher than that in the blank control group and NC group(P<0.05).After 24,48 and 72 hours of culture,the proliferation of the KGN cells in the miR-93-5p mimics group,LY294002+miR-93-5p group and AZD5363+miR-93-5p group was significantly higher than that in the blank control group and the NC group(P<0.05);the proliferation of the KGN cells in the LY294002+miR-93-5p group and AZD5363+miR-93-5p group was significantly lower than that in the miR-93-5p mimics group(P<0.05).Conclusion miR-93-5p in plasma is overexpressed in PCOS patients,and it may be involved in the occurrence and development of PCOS by mediating the proliferation of ovarian granulosa cells through the phosphoinositide 3 kinase/protein kinase B signaling pathway.The miR-93-5p level in plasma has a certain diagnostic value for PCOS.
9.Expression and significance of microRNA-320a-3p in peripheral blood of patients with polycystic ovary syndrome
Jingmin WANG ; Wei LI ; Jiamin YAN ; Kai ZHAO ; Hui ZHANG ; Ying LIU ; Yimeng REN ; Shuai JIN ; Dan HAN
Journal of Xinxiang Medical College 2024;41(10):957-961
Objective To explore the expression level of microRNA(miR)-320a-3p in peripheral blood in patients with polycystic ovary syndrome(PCOS)and its possible mechanism for regulating PCOS.Methods A total of 149 PCOS patients admitted to the Jiaozuo People's Hospital from July 2021 to July 2022 were selected as the research subjects(PCOS group),and 18 healthy volunteers with a regular menstrual cycle(28-35 d),no clinical or biochemical manifestations of hyperandrogenism,and no polycystic ovary changes detected by ultrasonography were selected as the control group.Clinical data of the subjects in the two groups were collected and compared.The expression level of miR-320a-3p in plasma of subjects in the two groups was detected by using the real-time quantitative polymerase chain reaction.The correlation between plasma miR-320a-3p expression and clinical indexes was evaluated by using the Pearson partial correlation analysis.The predictive value of miR-320a-3p for PCOS was analyzed by using the receiver operating characteristic curve.The relationship between miR-320a-3p and androgen receptor was evaluated by using the dual luciferase reporter gene assay.Results There was no significant difference in age,hip circumference,follicle stimulating hormone(FSH),prolactin(PRL),and high-density lipoprotein cholesterol(HDL-C)between the two groups(P>0.05).The body mass index,waist circumference,total testosterone(TT),anti-Miillerian hormone(AMH),luteinizing hormone(LH),fasting insulin(FINS),fasting blood glucose(FBG),2-hour postprandial blood glucose(2 h BG),homeostasis model assessment of insulin resistance(HOMA-IR),total cholesterol,triglycerides(TG),and low-density lipoprotein cholesterol(LDL-C)of patients in the PCOS group were significantly higher than those in the control group,while the level of estradiol(E2)was significantly lower than that in the control group(P<0.05).The relative expression level of miR-320a-3p in plasma of patients in the PCOS group was significantly lower than that in the control group(P<0.05).The expression level of miR-320a-3p was moderately negatively correlated with TT(r=-0.594,P<0.05)and slightly negatively correlated with waist circumference,FINS,2 h BG,HOMA-IR,and LDL-C(r=-0.293,-0.208,-0.227,-0.208,-0.208;P<0.05),and showed no significant correlation with hip circumference,AMH,FSH,E2,PRL,FBG,TG,and HDL-C(r=-0.079,0.020,-0.042,0.089,0.005,-0.141,-0.116,0.059;P>0.05).The area under the curve of miR-320a-3p for predicting PCOS was 0.968(95%confidence interval:0.922-1.000,P<0.05),with a cut-off value of 0.515,a sensitivity of 0.917,a specificity of 0.789,and a Jordon index of 0.706.miR-320a-3p negatively regulated androgen receptors.Conclusion miR-320a-3p is abnormally low expressed in peripheral blood of PCOS patients and may participate in the occurrence and development of PCOS by negatively regulating androgen receptors to increase TT levels.It has high predictive value for diagnosing PCOS.
10.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.

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