1.Expert Consensus on Clinical Application of Pingxuan Capsules
Yuer HU ; Yanming XIE ; Yaming LIN ; Yuanqi ZHAO ; Yihuai ZOU ; Mingquan LI ; Xiaoming SHEN ; Wei PENG ; Changkuan FU ; Yuanyuan LI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(1):201-210
As a patented characteristic medicine of Yi ethnic minority, Pingxuan capsules have the effects of nourishing the liver and kidney, pacifying the liver, and subduing Yang. With the main indications of dizziness, headache, palpitations, tinnitus, insomnia, dreaminess, waist and knee soreness caused by liver-kidney deficiency and liver Yang upward disturbance, Pingxuan capsules are widely used in the treatment of posterior circulation ischemic vertigo, vestibular migraine, benign paroxysmal positional vertigo. However, the current knowledge is limited regarding the efficacy, syndrome differentiation, and safety of this medicine. On the basis of summarizing the experience of clinicians and the existing evidence, this study invites clinical experts of traditional Chinese and Western medicine, pharmaceutical experts, and methodological experts from relevant fields across China to conduct evidence-based evaluation of Pingxuan capsules. The evaluation follows the Specifications for the Development of Clinical Expert Consensus on Chinese Patent Medicines issued by the Standardization Office of the China Association of Chinese Medicine, and reaches 5 recommendations and 16 consensus suggestions. The consensus clarifies the clinical applications, efficacy, dose, course of treatment, combination of medicines, precautions, and contraindications of Pingxuan capsules in the treatment of vertigo and explains the safety of clinical application. This consensus is applicable to clinicians (traditional Chinese medicine, Western medicine, and integrated traditional Chinese and Western medicine) and pharmacists in tertiary hospitals, secondary hospitals, and community-level medical and health institutions across China, providing a reference for the rational use of Pingxuan capsules in the treatment of vertigo. It is hoped that the promotion of this consensus can facilitate the rational use of drugs in clinical practice, reduce the risk of drug use, and give full play to the advantages of Pingxuan capsules in the treatment of vertigo diseases. This consensus has been reviewed and published by the China Association of Chinese Medicine, with the number GS/CACM330-2023.
2.The mechanism of Prim-O-glucosylcimifugin in improving cholesterol metabolism in osteoarthritis chondrocytes via lncRNA NEAT1/miR-128-3p
Yanming LIN ; Haishui TU ; Shujie LAN ; Chao LI ; Shiyu LU ; Yue CHEN ; Changlong FU
Journal of Beijing University of Traditional Chinese Medicine 2025;48(1):55-67
Objective:
To investigate the mechanism of action of Prim-O-glucosylcimifugin (POG) to improve cholesterol metabolism in osteoarthritic (OA) chondrocytes based on the long noncoding RNA nuclear-enriched transcript 1 (lncRNA NEAT1)/microRNA-128-3p (miR-128-3p) pathway.
Methods:
For in vivo experiments, 60 mice were divided into the normal, sham operation, model, and POG groups using the random number table method, with 15 mice per group. The osteoarthritis mouse model was constructed using the modified Hulth method in the model and POG groups. Mice in the POG group were administered 30 mg/(kg·d)POG by gavage. The other groups were administered an equal amount of normal saline for 8 weeks. The cartilage tissue structure of mice in each group was observed using hematoxylin and eosin staining. Real-time PCR was used to detect changes in the lncRNA NEAT1 and miR-128-3p mRNA expression levels in the cartilage tissues of mice. Western blotting was used to detect the protein expressions of ATP-binding cassette transporter A1 (ABCA1), liver X receptor β (LXRβ), matrix metalloprotein-3 (MMP-3), and B-lymphoblastoma-2-associated X protein (Bax) in articular cartilage of mice. An enzyme-linked immunosorbent assay was used to measure the tumor necrosis factor-α (TNF-α) content in the synovial fluid of mice. A biochemical microplate assay was used to measure the total cholesterol level in the synovial fluid of mice. The in vitro experiments were divided into the negative control, interleukin-1β(IL-1β), IL-1β+ POG, IL-1β+ oe-lncRNA NEAT1, IL-1β+ oe-lncRNA NEAT1 + POG, IL-1β + miR-128-3p inhibition, and IL-1β+ miR-128-3p inhibition+ POG groups. An OA model was established by inducing chondrocytes with IL-1β for 24 h, and 90 mg/L of POG and miR-128-3p inhibitor(50 nmol/L) were administered for 48 h as an intervention. lncRNA NEAT1 expression in chondrocytes was detected using fluorescence in situ hybridization. A dual luciferase assay was used to detect the targeting relationship between lncRNA NEAT1 and miR-128-3p. Lentiviral plasmids overexpressing lncRNA NEAT1 were used to transfect mouse chondrocytes. Real-time PCR was used to detect the effect of lncRNA NEAT1 overexpression on the mRNA level of miR-128-3p in chondrocytes. Western blotting was used to detect ABCA1, LXRβ, MMP-3, and Bax protein expression in chondrocytes after lncRNA NEAT1 overexpression and miR-128-3p inhibition.
Results:
POG significantly reduced OA cartilage tissue damage. Compared with the model group, the lncRNA NEAT1 mRNA level decreased, whereas the miR-128-3p mRNA level increased in the cartilage tissue of the POG group (P<0.05). Compared with the model group, ABCA1 and LXRβ protein expression increased in the POG group, whereas MMP-3 and Bax protein expression decreased (P<0.05). The TNF-α levels decreased in the POG group compared to the model group (P<0.05). Compared with the model group, the total cholesterol level in the synovial fluid of the joint of mice in the POG group decreased (P<0.05). The mean fluorescence intensity of lncRNA NEAT1 in the IL-1β+ POG group decreased compared with the IL-1β group (P<0.05). The relative luciferase activity in the miR-128-3p mimics group bound to the lncRNA NEAT1-WT plasmid decreased compared with the miR-128-3p negative control group (P<0.05). The lncRNA NEAT1 mRNA levels decreased, whereas the miR-128-3p mRNA levels increased in the IL-1β+ oe-lncRNA NEAT1 + POG group compared with the IL-1β+ oe-lncRNA NEAT1 group (P<0.05). Compared with the IL-1β+ POG group, ABCA1 and LXRβ protein expression decreased, whereas MMP-3 and Bax protein expression increased (P<0.05).
Conclusion
POG mediates lncRNA NEAT1/miR-128-3p to improve cholesterol metabolism in OA chondrocytes.
3.Expert Consensus on Clinical Application of Ruyi Zhenbaowan
Ming CHEN ; Jingling CHANG ; Shangquan WANG ; Gejia ZHONG ; Qiang DENG ; Hongxia CHEN ; Qien LI ; Yaming LIN ; Zujian XU ; Changkuan FU ; Yuer HU ; Yanming XIE ; Yuanyuan LI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(16):173-183
Osteoarthritis (OA) and stroke are common clinical diseases that reduce patients' quality of life and place a burden on families and society. Ruyi Zhenbaowan, a classic prescription in Tibetan medicine, have the functions of clearing heat, awakening the brain and opening orifices, relaxing tendons and promoting meridian circulation, and eliminating yellow water. Clinically, they are used to treat osteoarthritis, post-stroke sequelae, neuropathic pain, and other related conditions. Modern pharmacological studies have demonstrated their anti-inflammatory, analgesic, and nerve-repairing effects. However, current research remains insufficient regarding the appropriate indications, timing, and efficacy of this medicine in treating relevant diseases. To enhance clinicians' understanding of this medicine and promote its standardized and rational clinical use, a panel of national experts, including clinical specialists, Tibetan medicine practitioners, pharmacologists, and methodologists, formulated this consensus based on clinical experience and evidence-based practice. The Cochrane systematic review framework, the Grading of Recommendations Assessment, Development and Evaluation (GRADE) system, and the nominal group method were employed to generate seven graded recommendations and 19 consensus-based suggestions. These recommendations clearly define the key points in the clinical application of Ruyi Zhenbaowan, including therapeutic indications, dosage and administration, treatment duration, and medication safety. The consensus specifically addresses the clinical efficacy, appropriate timing of administration, dosage strategies, treatment cycles, and combination medication strategies for treating osteoarthritis and stroke and provides an overview of safety considerations. The aim is to provide standardized guidance for hospitals and healthcare institutions nationwide to ensure the rational application of Ruyi Zhenbaowan in the treatment of osteoarthritis and stroke, reduce medication-related risks, and further leverage its clinical advantages. This consensus has been approved and issued by the China Association of Chinese Medicine, with the standard number GS/CACM 369-2024.
4.Efficacy and safety of clobazam in the additional treatment of refractory epilepsy in children:meta-analysis of single-group rate
Caixia TU ; Danyang REN ; Jianling SHEN ; Yunwei LI ; Yanming YANG ; Aihua YAN ; Lin LI ; Huiying LI
China Pharmacy 2024;35(15):1893-1898
OBJECTIVE To investigate the efficacy and safety of clobazam in the additional treatment of refractory epilepsy in children, and provide reference for clinically safe and rational drug use. METHODS The literatures about additional clobazam treatment for refractory epilepsy in children were searched from PubMed, The Cochrane Library, Embase, CNKI, VIP and Wanfang database during the inception to November 2023. After literature screening and data extraction, the quality of included literature was evaluated according to quality evaluation tool for methodological evaluation indicators of non-randomized controlled trial, and then meta-analysis of single-group rate and sensitivity analysis were performed by using RevMan 5.3 software. RESULTS Finally, 18 one-arm studies were included, with a total of 1 424 children. The results showed that compared with before additional treatment, the proportion of patients with seizures-free (proportion of patients with seizure reduction of 100%) was 24%[95%CI (0.18,0.32), P<0.000 01] after conversion; the proportion of patients with seizure reduction ≥75% was 32%[95%CI(0.25,0.40), P<0.000 1] after conversion; the proportion of patients with seizure reduction ≥50% was 53%[95%CI(0.44,0.61),P<0.000 01]; the proportion of patients with seizure reduction <50% or no change was 35%[95%CI(0.24,0.49),P=0.04] after conversion; the proportion of patients with seizure increase was 9%[95%CI(0.05,0.18),P<0.000 01] after conversion. The proportion of patients with adverse reactions was 31%[95%CI(0.23,0.40),P<0.000 1] after conversion; the proportion of patients with discontinuation due to adverse reactions was 10%[95%CI(0.07, 0.15), P<0.000 01] after conversion. The common adverse drug reactions were drowsiness, fatigue and behavior change, etc. The results of the sensitivity analysis showed that the study was robust. CONCLUSIONS Clobazam is an effective additional therapy for refractory epilepsy in children, but its adverse effects should be vigilant.
5.Tougu Xiaotong Capsule alleviates cartilage degeneration in mice with knee osteoarthritis by modulating Nav1.7
Changlong FU ; Yanming LIN ; Shujie LAN ; Yue CHEN ; Chao LI ; Shiyu LU ; Qing LIN
Journal of Southern Medical University 2024;44(11):2074-2081
Objective To investigate the mechanism by which Tougu Xiaotong Capsule(TGXTC)alleviates chondrocyte degeneration in knee osteoarthritis(KOA).Methods Thirty 2-month-old C57BL/6 mouse models of KOA established using the Hulth method were randomized into model group,TGXTC group,and diclofenac sodium group and received treatment with saline,TGXTC(368 mg/kg),and diclofenac sodium(10 mg/kg)by gavage,respectively,with another 10 untreated mice as the blank control group.All interventions were administered 6 times a week for 4 weeks.After the treatments,structural changes in the cartilage tissue were observed with morphological staining,and Nav1.7 mRNA expression and the protein expression levels of Nav1.7,MMP-3,ADAMTS-5,and COX-2 were detected using RT-qPCR and Western blotting.Fluorescence in situ hybridization(FISH)was used to detect Nav1.7 expression in the chondrocytes.In cultured KOA chondrocytes,the effect of TGXTC and lentivirus-mediated Nav1.7 knockdown on MMP-3,MMP-13,ADAMTS-4,ADAMTS-5,and COX-2 protein expressions were assessed with Western blotting.Results In KOA mice treatments with TGXTC and diclofenac sodium both significantly alleviated structural damage of the cartilage layer,reduced Nav1.7 protein and mRNA expressions and lowered the expressions of MMP-3,ADAMTS-5,and COX-2 proteins in the cartilage tissues.FISH results indicated that TGXTC treatment significantly reduced IL-1β-induced Nav1.7 expression in the chondrocytes.In Nav1.7 knockdown experiment,Nav1.7 levels were significantly lower in IL-1β+sh-Nav1.7 group than in IL-1β group,and also lower in IL-1β+TGXTC group than in IL-1β+sh-Nav1.7+TGXTC group.TGXTC treatment significantly inhibited IL-1β-induced elevation of MMP-3,MMP-13,ADAMTS-4,ADAMTS-5 and COX-2 protein expressions in the chondrocytes,but its effects were strongly weakened by Nav1.7 knockdown.Conclusion TGXTC alleviates extracellular matrix metabolic disorder in KOA chondrocytes by regulating Nav1.7,thereby mitigating chondrocyte degeneration in KOA mice.
6.Tougu Xiaotong Capsule alleviates cartilage degeneration in mice with knee osteoarthritis by modulating Nav1.7
Changlong FU ; Yanming LIN ; Shujie LAN ; Yue CHEN ; Chao LI ; Shiyu LU ; Qing LIN
Journal of Southern Medical University 2024;44(11):2074-2081
Objective To investigate the mechanism by which Tougu Xiaotong Capsule(TGXTC)alleviates chondrocyte degeneration in knee osteoarthritis(KOA).Methods Thirty 2-month-old C57BL/6 mouse models of KOA established using the Hulth method were randomized into model group,TGXTC group,and diclofenac sodium group and received treatment with saline,TGXTC(368 mg/kg),and diclofenac sodium(10 mg/kg)by gavage,respectively,with another 10 untreated mice as the blank control group.All interventions were administered 6 times a week for 4 weeks.After the treatments,structural changes in the cartilage tissue were observed with morphological staining,and Nav1.7 mRNA expression and the protein expression levels of Nav1.7,MMP-3,ADAMTS-5,and COX-2 were detected using RT-qPCR and Western blotting.Fluorescence in situ hybridization(FISH)was used to detect Nav1.7 expression in the chondrocytes.In cultured KOA chondrocytes,the effect of TGXTC and lentivirus-mediated Nav1.7 knockdown on MMP-3,MMP-13,ADAMTS-4,ADAMTS-5,and COX-2 protein expressions were assessed with Western blotting.Results In KOA mice treatments with TGXTC and diclofenac sodium both significantly alleviated structural damage of the cartilage layer,reduced Nav1.7 protein and mRNA expressions and lowered the expressions of MMP-3,ADAMTS-5,and COX-2 proteins in the cartilage tissues.FISH results indicated that TGXTC treatment significantly reduced IL-1β-induced Nav1.7 expression in the chondrocytes.In Nav1.7 knockdown experiment,Nav1.7 levels were significantly lower in IL-1β+sh-Nav1.7 group than in IL-1β group,and also lower in IL-1β+TGXTC group than in IL-1β+sh-Nav1.7+TGXTC group.TGXTC treatment significantly inhibited IL-1β-induced elevation of MMP-3,MMP-13,ADAMTS-4,ADAMTS-5 and COX-2 protein expressions in the chondrocytes,but its effects were strongly weakened by Nav1.7 knockdown.Conclusion TGXTC alleviates extracellular matrix metabolic disorder in KOA chondrocytes by regulating Nav1.7,thereby mitigating chondrocyte degeneration in KOA mice.
7.Comparing the effects of dual-task training and single-task training on walking, balance and cognitive functions in individuals with Parkinson’s disease: A systematic review
Xiaoying LIN ; Yanming ZHANG ; Xiaowei ZHANG ; Xi CHEN ; Jianhua LIU ; Lei YANG ; Pang Marco Yiu Chung
Chinese Medical Journal 2024;137(13):1535-1543
Background::This systematic review aimed to examine whether dual-task (DT) training was superior to single-task (ST) training in improving DT walking, balance and cognitive functions for individuals with Parkinson’s disease (PD).Methods::Literature search was performed in the following electronic databases: PubMed, the Cochrane Library, Web of Science, and Metstr covering inception to May 10, 2023. And in order to facilitate comparison across trials, we calculated the effect size (Hedges’ g) of gait, balance, cognitive, and other parameters under both ST and DT conditions, using the mean change score and standard deviation (SD) of change score of the experimental and control groups. Randomized controlled trials that examined the effects of DT motor and cognitive training in individuals with Parkinson’s disease were included for this systematic review.Results::A total of 214 participants recruited from six articles (actually five trials) were involved in this review. In terms of walking ability, only double support time and stride time variability showed significant between-group difference (Hedges’ g = 0.34, 0.18, respectively). Compared to ST training group, DT training group had a more improvement effect in laboratory balance measurement (Hedges’ g = 0.18, 1.25), but no significant improvement in clinical balance measurement. No significant between-group differences were observed, thus its training effect on cognitive function was inconclusive.Conclusions::The DT training failed to achieve promising results better than ST training in improving DT walking and balance functions for individuals with PD. Any firm conclusion cannot be drawn at present, due to the limited number of eligible publications. Larger sample size and high-quality studies are needed to investigate the effectiveness of DT training in individuals with PD.
8.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.
9.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.
10.Changing resistance profiles of Enterococcus in hospitals across China:results from the CHINET Antimicrobial Resistance Surveillance Program,2015-2021
Na CHEN ; Ping JI ; Yang YANG ; Fupin HU ; Demei ZHU ; Yingchun XU ; Xiaojiang ZHANG ; 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 ; Wen'en LIU ; Yanming LI ; 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 WEN ; 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):300-308
Objective To understand the distribution and changing resistance profiles of clinical isolates of Enterococcus in hospitals across China from 2015 to 2021.Methods Antimicrobial susceptibility testing was conducted for the clinical isolates of Enterococcus according to the unified protocol of CHINET program by automated systems,Kirby-Bauer method,or E-test strip.The results were interpreted according to the Clinical & Laboratory Standards Institute(CLSI)breakpoints in 2021.WHONET 5.6 software was used for statistical analysis.Results A total of 124 565 strains of Enterococcus were isolated during the 7-year period,mainly including Enterococcus faecalis(50.7%)and Enterococcus faecalis(41.5%).The strains were mainly isolated from urinary tract specimens(46.9%±2.6%),and primarily from the patients in the department of internal medicine,surgery and ICU.E.faecium and E.faecalis strains showed low level resistance rate to vancomycin,teicoplanin and linezolid(≤3.6%).The prevalence of vancomycin-resistant E.faecalis and E.faecium was 0.1%and 1.3%,respectively.The prevalence of linezolid-resistant E.faecalis increased from 0.7%in 2015 to 3.4%in 2021,while the prevalence of linezolid-resistant E.faecium was 0.3%.Conclusions The clinical isolates of Enterococcus were still highly susceptible to vancomycin,teicoplanin,and linezolid,evidenced by a low resistance rate.However,the prevalence of linezolid-resistant E.faecalis was increasing during the 7-year period.It is necessary to strengthen antimicrobial resistance surveillance to effectively identify the emergence of antibiotic-resistant bacteria and curb the spread of resistant pathogens.


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