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Two missense STK11 gene variations impaired LKB1/adenosine monophosphate-activated protein kinase signaling in Peutz-Jeghers syndrome

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1532-1546页

作者： jin Liu Si-Cong Zeng An Wang Hai-ying Cheng Qian-Jun zhang Guang-Xiu lu Hunan Guangxiu Hospital Hunan Normal UniversityChangsha 410000Hunan ProvinceChina Scientific Research Department Reproductive and Genetic Hospital of Citic-XiangyaChangsha 410000Hunan ProvinceChina

BACKGROUND Peutz-Jeghers syndrome(PJS)is a rare hereditary neoplastic disorder mainly associated with serine/threonine kinase 11(STK11/LKB1)gene *** genetic testing can protect a patient’s offspring from mutated genes;however,some variations in this gene have been interpreted as variants of uncertain significance(VUS),which complicate reproductive decision-making in genetic *** To identify the pathogenicity of two missense variants and provide clinical *** Whole exome gene sequencing and Sanger sequencing were performed on the peripheral blood of patients with PJS treated at the Reproductive and Genetic Hospital of *** was employed to predict the protein structure,conservation,and pathogenicity of the two missense variation sites in patients with ***,plasmids were constructed and transfected into HeLa cells to observe cell *** differences in signal pathway expression between the variant group and the wild-type group were compared using western blot and *** analysis was performed using one-way analysis of variance.PG(***297Gly)and c.733C>T(***245Phe)]in 9 unrelated PJS families who were seeking reproductive *** two missense VUS were located in the catalytic domain of serine/threonine kinase,which is a key structure of the liver kinase B1(LKB1)*** vitro experiments showed that the phosphorylation levels of adenosine monophosphate-activated protein kinase(AMPK)at Thr172 and LKB1 at Ser428 were significantly higher in transfected variation-type cells than in wild-type *** addition,the two missense STK11 variants promoted the proliferation of HeLa *** immunohistochemical analysis showed that phosphorylated-AMPK(Thr172)expression was significantly lower in gastric,colonic,and uterine polyps from PJS patients with misse

关键词： Missense STK11 Peutz-Jeghers syndrome Rare disease Genetic counseling Assisted reproductive technique

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Comparative Study on the Immunogenicity and Efficacy of Different Post-exposure Intramuscular Rabies Vaccination Regimens in China

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Biomedical and Environmental Sciences 2024年第2期37卷 178-186页

作者： SONG Yun HE ying lu Xue xin zhang Xiao Mei JIANG XIAO Lin SONG Qing huaNG Xue Yong MA hong Xia YU Peng Cheng ZHU Wu Yang Henan Provincial Center for Disease Control and Prevention Infectious Disease Prevention and Control InstituteHenan Provincial Key Laboratory of Infectious Disease PathogensZhengzhou 450000HenanChina National Institute for Viral Disease Control and Prevention China CDCKey Laboratory of BiosafetyNational Health CommissionBeijing 102206China Shandong Provincial Center for Disease Control and Prevention Jinan 250014ShandongChina Qingdao Chengyang District Center for Disease Control and Prevention Qingdao 266108ShandongChina

Objective This study aimed to compare the current Essen rabies post-exposure immunization schedule(0-3-7-14-28)in China and the simple 4-dose schedule(0-3-7-14)newly recommended by the World Health Organization in terms of their safety,efficacy,and *** Mice were vaccinated according to different immunization schedules,and blood was collected for detection of rabies virus neutralizing antibodies(RVNAs)on days 14,21,28,35,and 120after the first ***,different groups of mice were injected with lethal doses of the CVS-11 virus on day 0,subjected to different rabies immunization schedules,and assessed for morbidity and death *** a clinical trial,185 rabies-exposed individuals were selected for post-exposure vaccination according to the Essen schedule,and blood was collected for RVNAs detection on days 28and 42 after the first *** A statistically significant difference in RVNAs between mice in the Essen and 0-3-7-14 schedule groups was observed on the 35th day(P0.05)in RVNAs levels at any time *** post-exposure immune protective test showed that the survival rate of mice in the control group was 20%,whereas that in the immunization groups was 40%.In the clinical trial,the RVNAs positive conversion rates on days 28(14 days after 4 doses)and 42(14 days after 5 doses)were both 100%,and no significant difference in RVNAs levels was observed(P>0.05).Conclusion The simple 4-dose schedule can produce sufficient RVNAs levels,with no significant effect of a delayed fourth vaccine dose(14–28 d)on the immunization potential.

关键词： Rabies Post-exposure immunization Essen regimen RVNAs

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Trifluoromethyl enable high-performance single-emitter white organic light-emitting devices based on quinazoline acceptor

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Chinese Chemical Letters 2024年第4期35卷 442-446页

作者： Xiangan Song Shaogang Shen Mengyao lu ying Wang Yong zhang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Photochemical Conversion and Optoelectronic Materials and TIPC-CityU Joint Laboratory of Functional Materials and DeviceChinese Academy of SciencesTechnical Institute of Physics and ChemistryBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Single-emitter white organic light-emitting diode(WOLED) based on small organic molecule exhibits great potential in simplifying fabrication process of WOLEDs. However, the design and synthesis of molecule for highly efficient single-emitter WOLED still remains a challenge. Herein, two asymmetric donor-acceptor-acceptor'(D-A-A') type molecule(PTZ-PQ-F and PTZ-PQ-CF3) are developed by employing trifluoromethyl(CF_(3)) or fluorine atom as secondary acceptor, which can exhibit white lighting with dual emission bands consisting of blue traditional fluorescence from quasi-axial(ax) conformer and orange thermally activated delayed fluorescence(TADF) from quasi-equatorial(eq) conformer. The introduction of CF_(3) into PTZ-PQ-CF3 greatly enhanced the photoluminescence quantum yield(PLQY) by suppressing the nonradiative deactivation. Owing to electron-inductive-effect of CF3, the “eq” conformer of PTZ-PQCF3 exhibits a much smaller ΔESTof 0.01 e V to realize more efficient reverse intersystem crossing(RISC)process, and then enhance the exciton utilization(nearly 100%) of the whole dual emission system. Consequently, single-emitter WOLEDs based on PTZ-PQ-CF3 show nearly standard white emission with EQE of 13.0% and CIE of(0.35, 0.36) in m CP host and show warm white emission with high EQE of 25.5%and CIE of(0.40, 0.47) in 35 Dcz PPy host, which are the best performance among reported single-emitter WOLEDs.

关键词： Single-emitter white organic light-emitting diode Conformational isomerism Thermally activated delayed fluorescence Trifluoromethyl Exciton utilization

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Proteomic profiling of cerebrospinal fluid in pediatric myelin oligodendrocyte glycoprotein antibody-associated disease

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World Journal of Pediatrics 2024年第3期20卷 259-271页

作者： Yi-Long Wang Meng-ying Zhu Zhe-Feng Yuan Xiao-Yan Ren Xiao-Tong Guo Yi hua lu Xu Cong-ying Zhao Li-hua Jiang xin zhang Guo-Xia Sheng Pei-Fang Jiang Zheng-Yan Zhao Feng Gao Department of Neurology Children's HospitalZhejiang University School of MedicineHangzhou 310052China Children's Hospital Zhejiang University School of MedicineHangzhou 310052China Children's Hospital National Clinical Research Center for Child HealthZhejiang University School of MedicineHangzhou 310052China

Background Myelin oligodendrocyte glycoprotein(MOG)antibody-associated disease(MOGAD)is an autoimmune demy-elinating disorder of the central nervous *** Extracted proteins from 34 cerebrospinal fluid(CSF)samples[patients with MOGAD(MOG group,n=12);healthy controls(HC group,n=12);patients with MOG seronegative and metagenomics next-generation sequencing-negative inflammatory neurological diseases(IND group,n=10)]were processed and subjected to label-free quantitative *** partial least squares-discriminant analysis(PLS-DA)and orthogonal PLS-DA(O-PLS-DA)models were also performed based on proteomics *** analysis of differentially expressed proteins(DEPs)was performed using Gene Ontology,InterPro,and Kyoto Encyclopedia Genes and *** enzyme-linked immunosorbent assay was used to determine the complement levels in serum from patients with *** Four hundred and twenty-nine DEPs(149 upregulated and 280 downregulated proteins)were identified in the MOG group compared to the HC group according to the P value and fold change(FC).Using the O-PLS-DA model,872 differentially abundant proteins were identified with variable importance projection(VIP)scores>*** proteins(gamma-glutamyl hydrolase,cathepsin F,interalpha-trypsin inhibitor heavy chain 5,latent transforming growth factor beta-binding protein 4 and leukocyte-associated immunoglobulin-like receptor 1)overlapping between the top 30 DEPs with top-ranked P value and FC and top 30 proteins in PLS-DA VIP lists were *** analysis revealed that the dysregulated proteins in the MOG group were primarily involved in complement and coagulation cascades,cell adhesion,axon guidance,and glycosphingolipid biosynthesis compared to the HC *** The proteomic alterations in CSF samples from children with MOGAD identified in the current study might provide opportunities for developing novel biomarker candidates.

关键词： Acute disseminated encephalomyelitis Cerebrospinal fluid Complement cascades Myelin oligodendrocyte glycoprotein-associated disease Proteomics

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Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene

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Chinese Journal of Polymer Science 2024年第5期42卷 612-619,I0007页

作者： Shi-Liang Xu ying-Nan Zhao Yao Yu Qi Yang Li-hua Na Heng Liu Chun-Yu zhang Xue-Quan zhang Key Laboratory of Advanced Rubber Material Ministry of EducationSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Shandong Provincial College Laboratory of Rubber Material and Engineering School of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Key Lab of Rubber-Plastics Ministry of Education/Shandong Provincial Key Lab of Rubber-plasticsSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China

In this study,a novel iron-based catalyst system,Fe(acac)3/(isocyanoimino)triptenylphosphorane(IITP)/AlR3,was employed for the synthesis of syndiotactic 1,2-polybutadiene in *** catalyst system exhibits remarkably high catalytic activity,achieving a polymerization activity of 762 kgpolymer·molcatalyst^(-1)·h^(-1)at 50℃with a[BD]/[Fe]molar ratio of ***,living polymerization characteristic were observed during the investigation of the polymerization kinetics of 1,3-butadiene *** characteristics were well demonstrated by a narrow molecular weight distribution(PDI≈2.0)of the resulting polybutadiene and a linear relationship between-ln(1-c)and polymerization time as well as number average molecular weight and polymer *** resultant polymer showed a 1,2-selectivity of approximately 76%and stereoregularity ranging from 62%to 73%(rrrr).Additionally,through kinetic studies on polymerization reaction,an apparent activation energy Ea value of this catalytic system was calculated to be 84.98 kJ·mol^(-1),which suggests that high polymerization temperature favors efficient polymerization.

关键词： Iron catalyst Syndiotactic 1,2-polybutadiene Elastomers Donor Selectivity

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AI for organic and polymer synthesis

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Science China Chemistry 2024年第8期67卷 2461-2496页

作者： xin hong Qi Yang Kuangbiao Liao Jianfeng Pei Mao Chen Fanyang Mo hua lu Wen-Bin zhang Haisen Zhou Jiaxiao Chen Lebin Su Shuo-Qing zhang Siyuan Liu Xu huang Yi-Zhou Sun Yuxiang Wang Zexi zhang Zhunzhun Yu Sanzhong luo Xue-Feng Fu Shu-Li You Center of Chemistry for Frontier Technologies Department of ChemistryZhejiang UniversityHangzhou 310027China Center of Basic Molecular Science Department of ChemistryTsinghua UniversityBeijing 100084China Guangzhou National Laboratory Guangzhou 510005China Center for Quantitative Biology Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China School of Materials Science and Engineering Peking UniversityBeijing 100871China Beijing National Laboratory for Molecular Sciences Center for Soft Matter Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China AI for Science(AI4S)-Preferred Program Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China State Key Laboratory of Chemical Biology Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China Department of Chemical Sciences National Natural Science Foundation of ChinaBeijing 100085China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

Recent years have witnessed the transformative impact from the integration of artificial intelligence with organic and polymer synthesis. This synergy offers innovative and intelligent solutions to a range of classic problems in synthetic chemistry. These exciting advancements include the prediction of molecular property, multi-step retrosynthetic pathway planning, elucidation of the structure-performance relationship of single-step transformation, establishment of the quantitative linkage between polymer structures and their functions, design and optimization of polymerization process, prediction of the structure and sequence of biological macromolecules, as well as automated and intelligent synthesis platforms. Chemists can now explore synthetic chemistry with unprecedented precision and efficiency, creating novel reactions, catalysts, and polymer materials under the datadriven paradigm. Despite these thrilling developments, the field of artificial intelligence(AI) synthetic chemistry is still in its infancy, facing challenges and limitations in terms of data openness, model interpretability, as well as software and hardware support. This review aims to provide an overview of the current progress, key challenges, and future development suggestions in the interdisciplinary field between AI and synthetic chemistry. It is hoped that this overview will offer readers a comprehensive understanding of this emerging field, inspiring and promoting further scientific research and development.

关键词： organic synthesis polymer synthesis machine learning prediction chemical database automated synthesis

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Gas sensor array based on carbon-based thin-film transistor for selective detection of indoor harmful gases

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Rare Metals 2024年第9期43卷 4401-4411页

作者： Can Liu Yu Sun Jia-Yi Guo Xiu-Lei Li lu Tao jin-Yong Hu Jue-Xian Cao Ping-hua Tang Yong zhang School of Electrical and Information Engineering Hunan Institute of EngineeringXiangtan 411104China Physics and Optoelectronics&Hunan Institute of Advanced Sensing and Information Technology Xiangtan UniversityXiangtan 411105China

The identification of indoor harmful gases is imperative due to their significant threats to human health and *** achieve accurate identification,an effective strategy of constructing a sensor array combined with the pattern recognition algorithm is ***-based thin-film transistors are selected as the sensor array unit,with semiconductor carbon nanotubes(CNTs)within the TFT channels modified with different metals(Au,Cu and Ti)for selective responses to NH_(3),H_(2)S and HCHO,*** accurate gas species identification,an identification mode that combines linear discriminant analysis algorithms and logistic regression classifier is *** test results demonstrate that by preprocessing the sensor array’s sensing data with the LDA algorithm and subsequently employing the LR classifier for identification,a 100%recognition rate can be achieved for three target gases(NH3,H2S and HCHO).This work provides significant guidance for future applications of chip-level gas sensors in the realms of the Internet of Things and Artificial Intelligence.

关键词： Carbon-based thin-film transistors Gas sensor arrays Semiconductor carbon nanotubes Multi-gas detection Linear discriminant analysis

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Expert consensus on the diagnosis and treatment of macrolide-resistant Mycoplasma pneumoniae pneumonia in children

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World Journal of Pediatrics 2024年第9期20卷 901-914页

作者： ying-Shuo Wang Yun-Lian Zhou Guan-Nan Bai Shu-Xian Li Dan Xu Li-Na Chen xing Chen Xiao-Yan Dong hong-Min Fu Zhou Fu Chuang-Li Hao Jian-Guo hong En-Mei Liu Han-Min Liu Xiao-Xia lu Zheng-Xiu luo Lan-Fang Tang Man Tian Yong Yin Xiao-Bo zhang Jian-hua zhang Hai-Lin zhang De-Yu Zhao Shun-ying Zhao Guo-hong Zhu ying-Xue Zou Quan lu Yuan-Yuan zhang Zhi-Min Chen Department of Pulmonology Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Child Health Care Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Pediatric Pulmonology and Immunology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Pediatrics Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021China Department of Pulmonology Shanghai Children’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200062China Department of Pulmonary and Critical Care Medicine Kunming Children’s HospitalKunming 650034China Department of Respiratory Medicine Children’s Hospital of Chongqing Medical UniversityChongqing 400014China Department of Pulmonology Children’s Hospital of Soochow UniversitySuzhou 215003China Department of Pediatrics Shanghai General Hospital Affiliated to Shanghai Jiaotong University School of MedicineShanghai 200080China Department of Respiratory Medicine Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430015China Department of Respiratory Medicine Children’s Hospital of Nanjing Medical UniversityNanjing 210008China Department of Respiratory Medicine Shanghai Children’s Medical CenterShanghai Jiao Tong University School of MedicineShanghai 200127China Department of Respiratory Medicine Children’s Hospital of Fudan UniversityShanghai 201102China Department of Pediatric Pulmonology Xinhua HospitalShanghai Jiaotong University School of MedicineShanghai 201102China Department of Pediatric Respiratory Medicine The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhou 325027China National Clinical Research Center for Respiratory Diseases Beijing Children’s HospitalCapital Medical UniversityBeijing 100045China Departmen

Background Mycoplasma pneumoniae(***)is a significant contributor to community-acquired pneumonia among *** 1968,when a strain of *** resistant to macrolide antibiotics was initially reported in Japan,macrolide-resistant ***(MRMP)has been documented in many countries worldwide,with varying incidence *** infections lead to a poor response to macrolide antibiotics,frequently resulting in prolonged fever,extended antibiotic treatment,increased hospitalization,intensive care unit admissions,and a significantly higher proportion of patients receiving glucocorticoids or second-line *** 2000,the global incidence of MRMP has gradually increased,especially in East Asia,which has posed a serious challenge to the treatment of *** infections in children and attracted widespread attention from ***,there is still no global consensus on the diagnosis and treatment of MRMP in *** We organized 29 Chinese experts majoring in pediatric pulmonology and epidemiology to write the world’s first consensus on the diagnosis and treatment of pediatric MRMP pneumonia,based on evidence *** evidence searches and reviews were conducted using electronic databases,including PubMed,Embase,Web of Science,CNKI,Medline,and the Cochrane *** used variations in terms for“macrolide-resistant”,“Mycoplasma pneumoniae”,“MP”,“***”,“pneumonia”,“MRMP”,“lower respiratory tract infection”,“Mycoplasma pneumoniae infection”,“children”,and“pediatric”.Results Epidemiology,pathogenesis,clinical manifestations,early identification,laboratory examination,principles of antibiotic use,application of glucocorticoids and intravenous immunoglobulin,and precautions for bronchoscopy are *** and rapid identification of gene mutations associated with MRMP is now available by polymerase chain reaction and fluorescent probe techniques in respiratory *** the resistance rate to mac

关键词： Child Macrolide-resistant Mycoplasma pneumoniae Recommendation Diagnosis Treatment

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Shexiang Tongxin Dropping Pill Promotes Angiogenesis through VEGF/eNOS Signaling Pathway on Diabetic Coronary Microcirculation Dysfunction

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Chinese Journal of Integrative Medicine 2024年第10期30卷 886-895页

作者： CUI xin-yu LIU Tian-hua BAI Ya-li zhang Meng-di LI Guo-dong zhang Yu-ting YUAN Yue-ying zhang Ya-wen YU Li-shuang HAN Li-na WU Yan School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing100029China Key Laboratory of Traditional Chinese Medicine Syndrome and Formula Ministry of Education Beijing University of Chinese MedicineBeijing100029China Beijing Research Institute of Chinese Medicine Beijing University of Chinese MedicineBeijing100029China

Objective:To study the effect of Shexiang Tongxin Dropping Pill(STDP)on angiogenesis in diabetic cardiomyopathy mice with coronary microcirculation dysfunction(CMD).Methods:According to a random number table,6 of 36 SPF male C57BL/6 mice were randomly selected as the control group,and the remaining 30 mice were injected with streptozotocin intraperitoneally to replicate the type 1 diabetes *** successfully copied the diabetes model were randomly divided into the model group,STDP low-dose group[15 mg/(kg·d)],medium-dose group[30 mg/(kg·d)],high-dose group[60 mg/(kg·d)],and nicorandil group[15 mg/(kg·d)],6 in each *** drug was given by continuous gavage for 12 *** cardiac function of mice in each group was detected at the end of the experiment,and coronary flow reserve(CFR)was detected by chest Doppler *** changes of myocardium were observed by hematoxylin-eosin staining,collagen fiber deposition was detected by masson staining,the number of myocardial capillaries was detected by platelet endothelial cell adhesion molecule-1 staining,and the degree of myocardial hypertrophy was detected by wheat germ agglutinin *** expression of the vascular endothlial growth factor(VEGF)/endothelial nitric oxide synthase(eNOS)signaling pathway-related proteins in myocardial tissue was detected by Western ***:Compared with the model group,medium-and high-dose STDP significantly increased the left ventricular ejection fraction and left ventricular fraction shortening(Plusion:STDP has a definite therapeuti

关键词： Shexiang Tongxin Dropping Pill type 1 diabetes diabetic cardiomyopathy coronary microcirculation dysfunction angiogenesis

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Current Mycoplasma pneumoniae epidemic among children in Shanghai:unusual pneumonia caused by usual pathogen

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World Journal of Pediatrics 2024年第1期20卷 5-10页

作者： Xiao-Bo zhang Wen He Yong-Hao Gui Quan lu Yong Yin Jian-hua zhang Xiao-Yan Dong ying-Wen Wang ying-Zi Ye hong Xu Jia-Yu Wang Bing Shen Dan-Ping Gu Li-Bo Wang Yi Wang Department of Respiratory Medicine Children's Hospital of Fudan University399 Wanyuan RoadShanghai 201102China State Key Laboratory of Genetic Engineering at School of Life Sciences Institute of Reproduction&DevelopmentChildren's Hospital of Fudan UniversityShanghaiChina Department of Respiratory Medicine Children's Hospital of Shanghai Jiao Tong UniversityShanghaiChina Department of Respiratory Medicine Shanghai Children's Medical CenterAffiliated to Shanghai Jiaotong University School of MedicineShanghaiChina Department of Pediatric Respiratory Xinhua HospitalAffiliated to Shanghai Jiaotong University School of MedicineShanghaiChina Department of Nursing Children's Hospital of Fudan UniversityShanghaiChina Department of Infectious Diseases Children's Hospital of Fudan UniversityShanghaiChina Department of Nephrology Children's Hospital of Fudan UniversityShanghaiChina NHC Key Laboratory of Neonatal Diseases Children's Hospital of Fudan UniversityShanghaiChina Shanghai Shenkang Hospital Development Center ShanghaiChina Center for Medical Quality Control Management of Shanghai ShanghaiChina Department of Neurology Children's Hospital of Fudan University399Wanyuan RoadShanghai 201102China

Mycoplasma pneumoniae(***),primarily transmitted through respiratory droplets when infected individuals cough or sneeze,is a common cause of communityacquired pneumonia,especially among school-age children and *** infection occurs endemically with an epidemic peak every few *** worldwide incidence confirmed by direct test methods was reported to be 8.61%between 2017 and 2020 across all age groups[1].

关键词： pneumonia epidemic respiratory

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