1.Study on the material basis and mechanism of anti-insomnia mechanism of Ning Shen Essential Oil based on 1H NMR metabolomics and network pharmacology
Qing CHAI ; Hong-bin ZHANG ; Li-dong WU ; Jing-yi WANG ; Hai-chao LI ; Yu-hong LIU ; Hong-yan LIU ; Hai-qiang JIANG ; Zhen-hua TIAN
Acta Pharmaceutica Sinica 2024;59(8):2313-2325
This paper applied gas chromatography-mass spectrometry (GC-MS), network pharmacology and nuclear magnetic resonance hydrogen spectroscopy (1H NMR) metabolomics techniques to study the material basis and mechanism of action of Ning Shen Essential Oil in anti-insomnia. The main volatile components of Ning Shen Essential Oil were analyzed by gas chromatography-mass spectrometry (GC-MS), and the insomnia-related targets were predicted using the Traditional Chinese Medicine Systematic Pharmacology Database and Analytical Platform (TCMSP) and the databases of GeneCards, OMIM and Drugbank. The insomnia model of rats was replicated by intraperitoneal injection of 4-chloro-
2.Clinical trial of Morinda officinalis oligosaccharides in the continuation treatment of adults with mild and moderate depression
Shu-Zhe ZHOU ; Zu-Cheng HAN ; Xiu-Zhen WANG ; Yan-Qing CHEN ; Ya-Ling HU ; Xue-Qin YU ; Bin-Hong WANG ; Guo-Zhen FAN ; Hong SANG ; Ying HAI ; Zhi-Jie JIA ; Zhan-Min WANG ; Yan WEI ; Jian-Guo ZHU ; Xue-Qin SONG ; Zhi-Dong LIU ; Li KUANG ; Hong-Ming WANG ; Feng TIAN ; Yu-Xin LI ; Ling ZHANG ; Hai LIN ; Bin WU ; Chao-Ying WANG ; Chang LIU ; Jia-Fan SUN ; Shao-Xiao YAN ; Jun LIU ; Shou-Fu XIE ; Mao-Sheng FANG ; Wei-Feng MI ; Hong-Yan ZHANG
The Chinese Journal of Clinical Pharmacology 2024;40(6):815-819
Objective To observe the efficacy and safety of Morinda officinalis oligosaccharides in the continuation treatment of mild and moderate depression.Methods An open,single-arm,multi-center design was adopted in our study.Adult patients with mild and moderate depression who had received acute treatment of Morinda officinalis oligosaccharides were enrolled and continue to receive Morinda officinalis oligosaccharides capsules for 24 weeks,the dose remained unchanged during continuation treatment.The remission rate,recurrence rate,recurrence time,and the change from baseline to endpoint of Hamilton Depression Scale(HAMD),Hamilton Anxiety Scale(HAMA),Clinical Global Impression-Severity(CGI-S)and Arizona Sexual Experience Scale(ASEX)were evaluated.The incidence of treatment-related adverse events was reported.Results The scores of HAMD-17 at baseline and after treatment were 6.60±1.87 and 5.85±4.18,scores of HAMA were 6.36±3.02 and 4.93±3.09,scores of CGI-S were 1.49±0.56 and 1.29±0.81,scores of ASEX were 15.92±4.72 and 15.57±5.26,with significant difference(P<0.05).After continuation treatment,the remission rate was 54.59%(202 cases/370 cases),and the recurrence rate was 6.49%(24 cases/370 cases),the recurrence time was(64.67±42.47)days.The incidence of treatment-related adverse events was 15.35%(64 cases/417 cases).Conclusion Morinda officinalis oligosaccharides capsules can be effectively used for the continuation treatment of mild and moderate depression,and are well tolerated and safe.
3.Role of ferroptosis in fibrosis: From mechanism to potential therapy
Xuemeng QIU ; Qing BI ; Jiyue WU ; Zejia SUN ; Wei WANG
Chinese Medical Journal 2024;137(7):806-817
Fibrosis, which is a manifestation of the physiological response to injury characterized by excessive accumulation of extracellular matrix components, is a ubiquitous outcome of the repair process. However, in cases of repetitive or severe injury, fibrosis may become dysregulated, leading to a pathological state and organ failure. In recent years, a novel form of regulated cell death, referred to as ferroptosis, has been identified as a possible contributor to fibrosis; it is characterized by iron-mediated lipid peroxidation. It has garnered attention due to the growing body of evidence linking ferroptosis and fibrogenesis, which is believed to be driven by underlying inflammation and immune responses. Despite the increasing interest in the relationship between ferroptosis and fibrosis, a comprehensive understanding of the precise role that ferroptosis plays in the formation of fibrotic tissue remains limited. This review seeks to synthesize previous research related to the topic. We categorized the different direct and indirect mechanisms by which ferroptosis may contribute to fibrosis into three categories: (1) iron overload toxicity; (2) ferroptosis-evoked necroinflammation, with a focus on ferroptosis and macrophage interplay; and (3) ferroptosis-associated pro-fibrotic factors and pathways. Furthermore, the review considers the potential implications of these findings and highlights the utilization of ferroptosis-targeted therapies as a promising strategy for mitigating the progression of fibrosis. In conclusion, novel anti-fibrotic treatments targeting ferroptosis could be an effective treatment for fibrosis.
4.Data analysis of perioperative period in 2050 cases of benign prostatic hyperplasia surgery in a single center over 10 years
Guo-Rong YANG ; Chao LYU ; Kai-Kai LYU ; Yang-Yang WU ; Tao SONG ; Qing YUAN
Medical Journal of Chinese People's Liberation Army 2024;49(9):992-997
Objective To summarize and analyze the surgical evolution and clinical efficacy of benign prostatic hyperplasia(BPH)surgery.Methods A retrospective cohort study was used to analyze the clinical data of 2050 patients who underwent surgery for BPH in the Department of Urology,the First Medical Center of PLA General Hospital from January 2012 to August 2022.These patients were divided into 3 groups in chronological order:the early group(n=683),the middle group(n=683)and the late group(n=684).The cumulative time of patients in each group was from January 2012 to February 2017,March 2017 to September 2020 and October 2020 to August 2022.The indicators,such as age,hypertension,diabetes,serum cholesterol,serum triacylglycerol,serum high-density lipoprotein cholesterol,body mass index(BMI),preoperative prostate volume,prostate specific antigen(PSA),free prostate specific antigen(fPSA),operation time,preoperative hospital stay,postoperative hospital stay,postoperative bladder flushing time,postoperative indwelling time,cystostomy situation,intraoperative and postoperative blood transfusion,postoperative readmission rate,and postoperative pathology were collected and compared between 3 groups,and the annual trend of changes in the number of BPH surgeries and surgical methods was analyzed.Results Transurethral resection of prostate(TURP)and TURP+laser resection decreased year by year,while transurethral laser resection of prostate increased and became the mainstream prostate resection method in recent two years,accounting for more than 90%.The patients in the early,middle and late groups were(69.7±7.9)years old,(68.7±7.4)years old and(69.8±8.5)years old(P=0.027);the operation time was 108.0(80.0,130.0)min,80.0(60.0,110.0)min and 75.0(60.0,100.0)min(P<0.001);the postoperative indwelling time was 4.1(2.7,5.9)d,3.9(2.9,4.9)d and 2.7(0.9,3.9)d(P<0.001);the rates of cystostomy were 68.8%,66.6%and 5.0%(P<0.001);the intraoperative and postoperative blood transfusion rates were 4.5%,3.1%and 0.9%(P<0.001);the preoperative hospitalization time was 5.6(3.8,7.1)d,4.7(3.5,5.9)d,and 4.7(3.1,6.7)d(P<0.001);the postoperative hospital stays were 5.7(4.8,7.0)d,4.7(3.0,5.9)d and 2.8(1.0,4.0)d(P<0.001),with statistically significant differences.Thirty-seven cases(1.8%)of BPH patients who underwent surgery in our center for 10 years were re-admitted after surgery,and 64 cases had postoperative pathological abnormalities or were diagnosed with prostate cancer,with a total detection rate of 3.1%.Conclusions Laser enucleation of prostate has become the mainstream surgical treatment of BPH in our center,and perioperative indexes such as operation time,hospital stay,postoperative catheter indwelling time,cystostomy rate,and surgical blood transfusion rate have shown a significant improvement trend.
5.Standardized operational protocol for the China Human Brain Bank Consortium(2nd edition)
Xue WANG ; Zhen CHEN ; Juan-Li WU ; Nai-Li WANG ; Di ZHANG ; Juan DU ; Liang YU ; Wan-Ru DUAN ; Peng-Hao LIU ; Han-Lin ZHANG ; Can HUANG ; Yue-Shan PIAO ; Ke-Qing ZHU ; Ai-Min BAO ; Jing ZHANG ; Yi SHEN ; Chao MA ; Wen-Ying QIU ; Xiao-Jing QIAN
Acta Anatomica Sinica 2024;55(6):734-745
Human brain banks use a standardized protocol to collect,process and store post-mortem human brains and related tissues,along with relevant clinical information,and to provide the tissue samples and data as a resource to foster neuroscience research according to a standardized operating protocols(SOP).Human brain bank serves as the foundation for neuroscience research and the diagnosis of neurological disorders,highlighting the crucial rule of ensuring the consistency of standardized quality for brain tissue samples.The first version of SOP in 2017 was published by the China Human Brain Bank Consortium.As members increases from different regions in China,a revised SOP was drafted by experts from the China Human Brain Bank Consortium to meet the growing demands for neuroscience research.The revised SOP places a strong emphasis on ethical standards,incorporates neuropathological evaluation of brain regions,and provides clarity on spinal cord sampling and pathological assessment.Notable enhancements in this updated version of the SOP include reinforced ethical guidelines,inclusion of matching controls in recruitment,and expansion of brain regions to be sampled for neuropathological evaluation.
6.Expert consensus on the evaluation and rehabilitation management of shoulder syndrome after neek dissection for oral and maxillofacial malignancies
Jiacun LI ; Moyi SUN ; Jiaojie REN ; Wei GUO ; Longjiang LI ; Zhangui TANG ; Guoxin REN ; Zhijun SUN ; Jian MENG ; Wei SHANG ; Shaoyan LIU ; Jie ZHANG ; Jicheng LI ; Yue HE ; Chunjie LI ; Kai YANG ; Zhongcheng GONG ; Qing XI ; Bing HAN ; Huaming MAI ; Yanping CHEN ; Jie ZHANG ; Yadong WU ; Chao LI ; Changming AN ; Chuanzheng SUN ; Hua YUAN ; Fan YANG ; Haiguang YUAN ; Dandong WU ; Shuai FAN ; Fei LI ; Chao XU ; Wei WEI
Journal of Practical Stomatology 2024;40(5):597-607
Neck dissection(ND)is one of the main treatment methods for oral and maxillofacial malignancies.Although ND type is in con-stant improvement,but intraoperative peal-pull-push injury of the accessory nerve,muscle,muscle membrane,fascia and ligament induced shoulder syndrome(SS)is still a common postoperative complication,combined with the influence of radiochemotherapy,not only can cause pain,stiffness,numbness,limited dysfunction of shoulder neck and arm,but also may have serious impact on patient's life quality and phys-ical and mental health.At present,there is still a lack of a systematic evaluation and rehabilitation management program for postoperative SS of oral and maxillofacial malignant tumors.Based on the previous clinical practice and the current available evidence,refer to the relevant lit-erature at home and abroad,the experts in the field of maxillofacial tumor surgery and rehabilitation were invited to discuss,modify and reach a consenusus on the etiology,assessment diagnosis,differential diagnosis,rehabilitation strategy and prevention of SS,in order to provide clinical reference.
7.Risk factors and survival of EBV-infected aplastic anemia patients after haploid allogeneic hematopoietic stem cell transplantation
Xin-He ZHANG ; Jia FENG ; Zheng-Wei TAN ; Yue-Chao ZHAO ; Hui-Jin HU ; Jun-Fa CHEN ; Li-Qiang WU ; Qing-Hong YU ; Di-Jiong WU ; Bao-Dong YE ; Wen-Bin LIU
Chinese Journal of Infection Control 2024;23(10):1228-1235
Objective To analyze the risk factors and survival status of Epstein-Barr virus(EBV)infection in pa-tients with aplastic anemia(AA)after haploid allogeneic hematopoietic stem cell transplantation(Haplo-HSCT).Methods Clinical data of 78 AA patients who underwent Haplo-HSCT in the hematology department of a hospital from January 1,2019 to October 31,2022 were analyzed retrospectively.The occurrence and onset time of EBV viremia,EBV-related diseases(EBV diseases),and post-transplant lymphoproliferative disorders(PTLD)were ob-served,risk factors and survival status were analyzed.Results Among the 78 patients,38 were males and 40 were females,with a median age of 33(9-56)years old;53 patients experienced EBV reactivation,with a total inci-dence of 67.9%,and the median time for EBV reactivation was 33(13,416)days after transplantation.Among pa-tients with EBV reactivation,49 cases(62.8%)were simple EBV viremia,2 cases(2.6%)were possible EBV di-seases,and 2 cases(2.6%)were already confirmed EBV diseases(PTLD).Univariate analysis showed that age 1<40 years old at the time of transplantation,umbilical cord blood infusion,occurrence of acute graft-versus-host disease(aGVHD)after transplantation,and concurrent cytomegalovirus(CMV)infection were independent risk fac-tors for EBV reactivation in AA patients after Haplo-HSCT.Multivariate analysis showed that concurrent CMV in-fection was an independent risk factor for EBV reactivation in A A patients after Haplo-HSCT(P=0.048).Ritu-ximab intervention before stem cell reinfusion was a factor affecting the duration of EBV reactivation(P<0.05).The mortality of EBV viremia,EBV diseases,and PTLD alone were 8.2%,50.0%,and 100%,respectively.The 2-year overall survival rate of patients with and without EBV reactivation were 85.3%,and 90.7%,respectively,difference was not statistically significant(P=0.897).However,patients treated with rituximab had 2-year lower survival rate than those who did not use it,with a statistically significant difference(P=0.046).Conclusion EBV reactivation is one of the serious complications in AA patients after Haplo-HSCT,which affects the prognosis and survival of patients.
8.Application of F4.8 visualized puncture assisted microchannel percutaneous nephrolithotomy in the treatment of calyceal diverticular calculus
Cheng SUN ; Chao ZHANG ; Qing-Hua LI ; Yu WANG ; Zhu WEN ; Hao WU
Journal of Regional Anatomy and Operative Surgery 2024;33(10):905-909
Objective To investigate the application effect of F4.8 visualized puncture assisted microchannel percutaneous nephroli-thotomy(mPCNL)in the treatment of patients with calyceal diverticular calculus.Methods A total of 86 patients with calyceal diverticular calculus from January 2020 to January 2023 in Hefei First People's Hospital were selected and divided into the observation group and the conventional group according to random number table method,with 43 cases in each group.Patients in the conventional group were given mPCNL,while patients in the observation group were given F4.8 visualized puncture assisted mPCNL.The stone clearance rate immediately after surgery and 4 weeks after surgery,surgery and postoperative recovery,complications,as well as pre-and post-operative trauma stress indicators[serum cortisol(Cor),norepinephrine(NE),C-reactive protein(CRP),interleukin-6(IL-6)],interlobar renal artery hemodynamic indicators[peak systolic velocity(Vmax),end diastolic velocity(EDV),resistance index(RI)],and renal function indicators[urine kidney injury molecule-1(KIM-1),24 h urinary protein quantitation(24 h Upro),blood urea nitrogen(BUN),serum creatinine(Scr)]were compared between the two groups.Results The stone clearance rate immediately after surgery in the observation group was higher than that in the conventional group,the intraoperative blood loss was less than that in the conventional group,and the operation time,postoperative ambulation time,indwelling nephrostomy tube time,and hospitalization time were shorter than those in the conventional group,and the differences were statistically significant(P<0.05).The serum levels of Cor,NE,CRP and IL-6 1 day and 3 days after surgery in the two groups were higher than those before operation(P<0.05),while the serum levels of Cor,NE,CRP and IL-6 1 day and 3 days after surgery in the observation group were lower than those in the conventional group(P<0.05).The Vmax and EDV of renal interlobar artery 1 day after surgery in the observation group decreased compared with those before operation(P<0.05),while RI increased(P<0.05).The Vmax and EDV of renal interlobar artery 1 day and 3 days after surgery in the conventional group decreased compared with those before operation(P<0.05),while RI increased(P<0.05).The Vmax and EDV of renal interlobar artery 1 day and 3 days after surgery in the observation group were higher than those in the conventional group,while RI was lower than that in the conventional group,and the differences were statistically significant(P<0.05).The levels of KIM-1,24 h Upro,BUN,and Scr of urine 7 days after surgery in both groups were lower than those before surgery,and those in the observation group were lower than those in the conventional group,with statistically significant differences(P<0.05).There was no statistically significant difference in the incidence of complication between the two groups(P>0.05).Conclusion F4.8 visualized puncture assisted mPCNL for the treatment of calyceal diverticular calculus can improve surgical effect,reduce surgical trauma stress,and promote renal function recovery.
9.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.
10.Changing distribution and resistance profiles of common pathogens isolated from urine in the CHINET Antimicrobial Resistance Surveillance Program,2015-2021
Yanming LI ; Mingxiang ZOU ; Wen'en LIU ; Yang YANG ; Fupin HU ; Demei ZHU ; Yingchun XU ; Xiaojiang ZHANG ; Fengbo ZHANG ; Ping JI ; Yi XIE ; Mei KANG ; Chuanqing WANG ; Pan FU ; Yuanhong XU ; Ying HUANG ; Ziyong SUN ; Zhongju CHEN ; Yuxing NI ; Jingyong SUN ; Yunzhuo CHU ; Sufei TIAN ; Zhidong HU ; Jin LI ; Yunsong YU ; Jie LIN ; Bin SHAN ; Yan DU ; Sufang GUO ; Lianhua WEI ; Fengmei ZOU ; Hong ZHANG ; Chun WANG ; Yunjian HU ; Xiaoman AI ; Chao ZHUO ; Danhong SU ; Dawen GUO ; Jinying ZHAO ; Hua YU ; Xiangning HUANG ; Yan JIN ; Chunhong SHAO ; Xuesong XU ; Chao YAN ; 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 ; Jinju DUAN ; Jianbang KANG ; Xiaobo MA ; Yanping ZHENG ; Ruyi GUO ; Yan ZHU ; Yunsheng CHEN ; Qing MENG ; Shifu WANG ; Xuefei HU ; Jilu SHEN ; Ruizhong WANG ; Hua FANG ; Bixia YU ; Yong ZHAO ; Ping GONG ; Kaizhen WENG ; Yirong ZHANG ; Jiangshan LIU ; Longfeng LIAO ; Hongqin GU ; Lin JIANG ; Wen HE ; Shunhong XUE ; Jiao FENG ; Chunlei YUE
Chinese Journal of Infection and Chemotherapy 2024;24(3):287-299
Objective To investigate the distribution and antimicrobial resistance profiles of the common pathogens isolated from urine from 2015 to 2021 in the CHINET Antimicrobial Resistance Surveillance Program.Methods The bacterial strains were isolated from urine and identified routinely in 51 hospitals across China in the CHINET Antimicrobial Resistance Surveillance Program from 2015 to 2021.Antimicrobial susceptibility was determined by Kirby-Bauer method,automatic microbiological analysis system and E-test according to the unified protocol.Results A total of 261 893 nonduplicate strains were isolated from urine specimen from 2015 to 2021,of which gram-positive bacteria accounted for 23.8%(62 219/261 893),and gram-negative bacteria 76.2%(199 674/261 893).The most common species were E.coli(46.7%),E.faecium(10.4%),K.pneumoniae(9.8%),E.faecalis(8.7%),P.mirabilis(3.5%),P.aeruginosa(3.4%),SS.agalactiae(2.6%),and E.cloacae(2.1%).The strains were more frequently isolated from inpatients versus outpatients and emergency patients,from females versus males,and from adults versus children.The prevalence of ESBLs-producing strains in E.coli,K.pneumoniae and P.mirabilis was 53.2%,52.8%and 37.0%,respectively.The prevalence of carbapenem-resistant strains in E.coli,K.pneumoniae,P.aeruginosa and A.baumannii was 1.7%,18.5%,16.4%,and 40.3%,respectively.Lower than 10%of the E.faecalis isolates were resistant to ampicillin,nitrofurantoin,linezolid,vancomycin,teicoplanin and fosfomycin.More than 90%of the E.faecium isolates were ressitant to ampicillin,levofloxacin and erythromycin.The percentage of strains resistant to vancomycin,linezolid or teicoplanin was<2%.The E.coli,K.pneumoniae,P.aeruginosa and A.baumannii strains isolated from ICU inpatients showed significantly higher resistance rates than the corresponding strains isolated from outpatients and non-ICU inpatients.Conclusions E.coli,Enterococcus and K.pneumoniae are the most common pathogens in urinary tract infection.The bacterial species and antimicrobial resistance of urinary isolates vary with different populations.More attention should be paid to antimicrobial resistance surveillance and reduce the irrational use of antimicrobial agents.

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