目的使用文献计量学方法分析国内外小儿骨科多中心研究论文发表的现状及热点。方法检索中国知网(China National Knowledge Infrastructure,CNKI)、万方医学网、维普数据库和Web of Science(WOS)中的小儿骨科多中心研究相关中文及外文文...目的使用文献计量学方法分析国内外小儿骨科多中心研究论文发表的现状及热点。方法检索中国知网(China National Knowledge Infrastructure,CNKI)、万方医学网、维普数据库和Web of Science(WOS)中的小儿骨科多中心研究相关中文及外文文献,检索时限为2014年1月1日至2023年12月30日。采用Microsoft Excel和CiteSpace进行数据处理,对纳入文献的时间分布、期刊分布、机构分布、国家分布以及关键词等进行统计及可视化分析。结果共纳入文献846篇,其中外文文献716篇、中文文献130篇;美国发文量最高(387篇)。《中华小儿外科杂志》(15篇)和Journal of Pediatric Orthopaedics(119篇)分别是国内、国外刊登小儿骨科多中心研究论文最多的期刊。中文文献关键词主要被聚类为"儿童""外科手术""超声检查""三维成像""内固定器"5个簇;外文文献关键词主要聚类为developmental dysplasia of the hip,natural history,adult spinal deformity,avascular necrosis等13个关键词簇。关键词突现分析表明,当前国内研究的热点在于治疗结果、危险因素、超声检查等方面,国外研究的热点在于早发性脊柱侧凸、诊断、骨病学等方面。结论小儿骨科多中心研究近10年来主要关注点在于手术治疗、特殊疾病、预后结局和诊断等方面,美国在该领域发文最多,中国小儿骨科多中心研究逐渐获得国际认可,未来应继续加强多层次、全方位的科研合作,进一步提高小儿骨科多中心研究的质量。展开更多
发育性髋关节发育不良(developmental dysplasia of the hip,DDH)是儿童骨科常见的骨骼肌肉畸形,主要临床表现包括髋关节不稳定、半脱位甚至完全脱位。部分轻度的DDH可自行缓解;但其他未经早期正确诊治的DDH会出现进行性加重,导致髋部...发育性髋关节发育不良(developmental dysplasia of the hip,DDH)是儿童骨科常见的骨骼肌肉畸形,主要临床表现包括髋关节不稳定、半脱位甚至完全脱位。部分轻度的DDH可自行缓解;但其他未经早期正确诊治的DDH会出现进行性加重,导致髋部疼痛、活动受限、步态异常,最终可致成年期退行性关节炎。DDH可能为先天因素与后天环境因素共同作用所致,但DDH确切的遗传学模式、发病机理以及DDH发生、发展过程中的具体分子调控机制尚不清楚。本文对近年来DDH遗传学研究及其发病相关的分子调控机制研究进行简要归纳与总结。展开更多
Pearl River Mouth Basin undergoes complex tectonic evolution processes and forms lacustrine,transitional and marine sediments.Drilling shows that there exist large petroleum reserves in the hydrocarbon-rich sags of Pe...Pearl River Mouth Basin undergoes complex tectonic evolution processes and forms lacustrine,transitional and marine sediments.Drilling shows that there exist large petroleum reserves in the hydrocarbon-rich sags of Pearl River Mouth Basin,South China Sea.To reduce the risk,the exploration,structural and sedimentary characteristics of the hydrocarbon-rich sags should be identified and described.Drilling,seismic,and microfossil data are integrated to interpret the structural and sedimentary evolution of the hydrocarbon-rich sags in Pearl River Mouth Basin.By analyzing the tectonic and sedimentary evolutionary characteristics,three conclusions may be drawn:1、The present regional tectonic characteristics of the PRMB are formed by mutual interactions of the Eurasian Plate,Pacific Plate,Philippine Plate and Indian Plate.During the Paleocene to early Eocene and late Eocene and early Oligocene,the PRMB is at the rifting stage.During the late Oligocene,the PRMB was at the rifting-depression transitional stage.After the Oligocene,the PRMB is at the depression stage.2、Tectonic conditions control the sedimentation process in the hydrocarbon-rich sags.During the lacustrine sedimentation stage,synsedimentary faults and intense faulting control the sedimentation.During the transitional sedimentation stage,weak fault activity influences the deposition process in the hydrocarbon-rich sags.During the marine sedimentation stage,weak fault activity and depression activity control the deposition process in the hydrocarbon-rich sags.3、Tectonic evolution affects the deposition process.The lacustrine,transitional and marine sedimentation corresponds to different tectonic conditions.The lacustrine sedimentation is formed under fault activity during the rifting stage.The transitional sedimentation is formed under weak fault activity during the late rifting stage.The marine sedimentation is formed under weak fault activity and depression activity during the rifting-depression and depression stages.4、The half graben is beneficial for the formation of lacustrine source rocks,which is responsible for the hydrocarbon-rich sag.Therefore the half graben mode contributes to the hydrocarbon-rich sags.展开更多
Erratum to:SCIENCE CHINA Life Sciences,Volume 66,Issue 2:211-225(2022),https://doi.org/10.1007/s11427-021-2126-2 This paper contains an error in Figure 4C,where the representative images of filipin staining of retinal...Erratum to:SCIENCE CHINA Life Sciences,Volume 66,Issue 2:211-225(2022),https://doi.org/10.1007/s11427-021-2126-2 This paper contains an error in Figure 4C,where the representative images of filipin staining of retinal sections from 6-month-old mice were misused.We provide the correct picture for Figure 4C as follows.The statistical result in Figure 4D was corrected as well.This new Figure 4 does not affect the conclusion of this article.展开更多
Genome-wide association studies have suggested a link between primary open-angle glaucoma and the function of ABCA1.ABCA1 is a key regulator of cholesterol efflux and the biogenesis of high-density lipoprotein(HDL) pa...Genome-wide association studies have suggested a link between primary open-angle glaucoma and the function of ABCA1.ABCA1 is a key regulator of cholesterol efflux and the biogenesis of high-density lipoprotein(HDL) particles. Here, we showed that the POAG risk allele near ABCA1 attenuated ABCA1 expression in cultured cells. Consistently, POAG patients exhibited lower ABCA1 expression, reduced HDL, and higher cholesterol in white blood cells. Ablation of Abca1 in mice failed to form HDL, leading to elevated cholesterol levels in the retina. Counting retinal ganglion cells(RGCs) by using an artificial intelligence(AI) program revealed that Abca1-deficient mice progressively lost RGCs with age. Single-cell RNA sequencing(scRNA-seq) revealed aberrant oxidative phosphorylation in the Abca1-/-retina, as well as activation of the mTORC1 signaling pathway and suppression of autophagy. Treatment of Abca1-/-mice using atorvastatin reduced the cholesterol level in the retina,thereby improving metabolism and protecting RGCs from death. Collectively, we show that lower ABCA1 expression and lower HDL are risk factors for POAG. Accumulated cholesterol in the Abca1-/-retina causes profound aberrant metabolism, leading to a POAG-like phenotype that can be prevented by atorvastatin. Our findings establish statin use as a preventive treatment for POAG associated with lower ABCA1 expression.展开更多
Pseudomonas aeruginosa is a significant pathogen mainly causing healthcare-associated infections(HAIs).Newly emerging high-risk clones of P.aeruginosa with elevated virulence profiles furtherly cause severe community-...Pseudomonas aeruginosa is a significant pathogen mainly causing healthcare-associated infections(HAIs).Newly emerging high-risk clones of P.aeruginosa with elevated virulence profiles furtherly cause severe community-acquired infections(CAIs).Usually,it is not common for P.aeruginosa to co-carry exoU and exoS genes,encoding two type III secretion system(T3SS)effectors.The pathogenicity mechanism of exoS+/exoU+strains of P.aeruginosa remains unclear.Here,we provide detailed evidence for a subset of hypervirulent P.aeruginosa strains,which abundantly co-express and secrete the T3SS effectors ExoS and ExoU.The exoS+/exoU+P.aeruginosa strains were available to cause both HAIs and CAIs.The CAI-associated strains could elicit severe inflammation and hemorrhage,leading to higher death rates in a murine acute pneumonia model,and had great virulence potential in establishing chronic infections,demonstrating hypervirulence when compared to PAO1(exoS+/exoU-)and PA14(exoS-/exoU+).Both ExoS and ExoU were co-expressed and co-secreted in abundance in exoS+/exoU+strains.Their abundant protein secretion could boost exoS+/exoU+strains’potentials for cytotoxicity in vitro and pathogenicity in vivo.Genomic evidence indicates that exoU acquisition is likely mediated by horizontal gene transfer(HGT)of the pathogenicity island PAPI-2,while deletion of exoU was sufficient to mitigate virulence in the exoS+/exoU+strains.Furthermore,bioinformatics analysis showed that such exoS+/exoU+P.aeruginosa strains turned out to be widely distributed across the globe.Overall,the research provide detailed evidence for the high virulence and epidemicity of exoS+/exoU+strains of P.aeruginosa,highlighting an urgent need for surveillance against these high-risk hypervirulent strains.展开更多
文摘目的使用文献计量学方法分析国内外小儿骨科多中心研究论文发表的现状及热点。方法检索中国知网(China National Knowledge Infrastructure,CNKI)、万方医学网、维普数据库和Web of Science(WOS)中的小儿骨科多中心研究相关中文及外文文献,检索时限为2014年1月1日至2023年12月30日。采用Microsoft Excel和CiteSpace进行数据处理,对纳入文献的时间分布、期刊分布、机构分布、国家分布以及关键词等进行统计及可视化分析。结果共纳入文献846篇,其中外文文献716篇、中文文献130篇;美国发文量最高(387篇)。《中华小儿外科杂志》(15篇)和Journal of Pediatric Orthopaedics(119篇)分别是国内、国外刊登小儿骨科多中心研究论文最多的期刊。中文文献关键词主要被聚类为"儿童""外科手术""超声检查""三维成像""内固定器"5个簇;外文文献关键词主要聚类为developmental dysplasia of the hip,natural history,adult spinal deformity,avascular necrosis等13个关键词簇。关键词突现分析表明,当前国内研究的热点在于治疗结果、危险因素、超声检查等方面,国外研究的热点在于早发性脊柱侧凸、诊断、骨病学等方面。结论小儿骨科多中心研究近10年来主要关注点在于手术治疗、特殊疾病、预后结局和诊断等方面,美国在该领域发文最多,中国小儿骨科多中心研究逐渐获得国际认可,未来应继续加强多层次、全方位的科研合作,进一步提高小儿骨科多中心研究的质量。
文摘发育性髋关节发育不良(developmental dysplasia of the hip,DDH)是儿童骨科常见的骨骼肌肉畸形,主要临床表现包括髋关节不稳定、半脱位甚至完全脱位。部分轻度的DDH可自行缓解;但其他未经早期正确诊治的DDH会出现进行性加重,导致髋部疼痛、活动受限、步态异常,最终可致成年期退行性关节炎。DDH可能为先天因素与后天环境因素共同作用所致,但DDH确切的遗传学模式、发病机理以及DDH发生、发展过程中的具体分子调控机制尚不清楚。本文对近年来DDH遗传学研究及其发病相关的分子调控机制研究进行简要归纳与总结。
基金the National Natural Science Foundation of China(No.41702135)the Yangtze Youth Fund(No.2015qq33),the 13th“Five-year”plan of the Ministry of Science and Technology of China(No.2016ZX05037-002)National Science and Technology Major Project(NO.2016ZX05015-006).
文摘Pearl River Mouth Basin undergoes complex tectonic evolution processes and forms lacustrine,transitional and marine sediments.Drilling shows that there exist large petroleum reserves in the hydrocarbon-rich sags of Pearl River Mouth Basin,South China Sea.To reduce the risk,the exploration,structural and sedimentary characteristics of the hydrocarbon-rich sags should be identified and described.Drilling,seismic,and microfossil data are integrated to interpret the structural and sedimentary evolution of the hydrocarbon-rich sags in Pearl River Mouth Basin.By analyzing the tectonic and sedimentary evolutionary characteristics,three conclusions may be drawn:1、The present regional tectonic characteristics of the PRMB are formed by mutual interactions of the Eurasian Plate,Pacific Plate,Philippine Plate and Indian Plate.During the Paleocene to early Eocene and late Eocene and early Oligocene,the PRMB is at the rifting stage.During the late Oligocene,the PRMB was at the rifting-depression transitional stage.After the Oligocene,the PRMB is at the depression stage.2、Tectonic conditions control the sedimentation process in the hydrocarbon-rich sags.During the lacustrine sedimentation stage,synsedimentary faults and intense faulting control the sedimentation.During the transitional sedimentation stage,weak fault activity influences the deposition process in the hydrocarbon-rich sags.During the marine sedimentation stage,weak fault activity and depression activity control the deposition process in the hydrocarbon-rich sags.3、Tectonic evolution affects the deposition process.The lacustrine,transitional and marine sedimentation corresponds to different tectonic conditions.The lacustrine sedimentation is formed under fault activity during the rifting stage.The transitional sedimentation is formed under weak fault activity during the late rifting stage.The marine sedimentation is formed under weak fault activity and depression activity during the rifting-depression and depression stages.4、The half graben is beneficial for the formation of lacustrine source rocks,which is responsible for the hydrocarbon-rich sag.Therefore the half graben mode contributes to the hydrocarbon-rich sags.
文摘Erratum to:SCIENCE CHINA Life Sciences,Volume 66,Issue 2:211-225(2022),https://doi.org/10.1007/s11427-021-2126-2 This paper contains an error in Figure 4C,where the representative images of filipin staining of retinal sections from 6-month-old mice were misused.We provide the correct picture for Figure 4C as follows.The statistical result in Figure 4D was corrected as well.This new Figure 4 does not affect the conclusion of this article.
基金supported by the National Precision Medicine Project(2016YFC0905200)the National Natural Science Foundation of China(81790643,82121003,81570882,81770935,81670853,81271005)+1 种基金the grant from Chinese Academy of Medical Sciences(2019-I2M-5-032)the grant from the Department of Science and Technology of Sichuan Province(2021YFS0404,2021FS0369,2020YJ0445,2019JDJQ0031,2022JDTD0024)。
文摘Genome-wide association studies have suggested a link between primary open-angle glaucoma and the function of ABCA1.ABCA1 is a key regulator of cholesterol efflux and the biogenesis of high-density lipoprotein(HDL) particles. Here, we showed that the POAG risk allele near ABCA1 attenuated ABCA1 expression in cultured cells. Consistently, POAG patients exhibited lower ABCA1 expression, reduced HDL, and higher cholesterol in white blood cells. Ablation of Abca1 in mice failed to form HDL, leading to elevated cholesterol levels in the retina. Counting retinal ganglion cells(RGCs) by using an artificial intelligence(AI) program revealed that Abca1-deficient mice progressively lost RGCs with age. Single-cell RNA sequencing(scRNA-seq) revealed aberrant oxidative phosphorylation in the Abca1-/-retina, as well as activation of the mTORC1 signaling pathway and suppression of autophagy. Treatment of Abca1-/-mice using atorvastatin reduced the cholesterol level in the retina,thereby improving metabolism and protecting RGCs from death. Collectively, we show that lower ABCA1 expression and lower HDL are risk factors for POAG. Accumulated cholesterol in the Abca1-/-retina causes profound aberrant metabolism, leading to a POAG-like phenotype that can be prevented by atorvastatin. Our findings establish statin use as a preventive treatment for POAG associated with lower ABCA1 expression.
基金supported by grants from the National Key R&D Program of China(2021YFC2302005)the Joint Funds of the International Development Research Center of Canada(109282-001)the National Key R&D Program of China(2021YFC2301004 and 2017YFE0125600).
文摘Pseudomonas aeruginosa is a significant pathogen mainly causing healthcare-associated infections(HAIs).Newly emerging high-risk clones of P.aeruginosa with elevated virulence profiles furtherly cause severe community-acquired infections(CAIs).Usually,it is not common for P.aeruginosa to co-carry exoU and exoS genes,encoding two type III secretion system(T3SS)effectors.The pathogenicity mechanism of exoS+/exoU+strains of P.aeruginosa remains unclear.Here,we provide detailed evidence for a subset of hypervirulent P.aeruginosa strains,which abundantly co-express and secrete the T3SS effectors ExoS and ExoU.The exoS+/exoU+P.aeruginosa strains were available to cause both HAIs and CAIs.The CAI-associated strains could elicit severe inflammation and hemorrhage,leading to higher death rates in a murine acute pneumonia model,and had great virulence potential in establishing chronic infections,demonstrating hypervirulence when compared to PAO1(exoS+/exoU-)and PA14(exoS-/exoU+).Both ExoS and ExoU were co-expressed and co-secreted in abundance in exoS+/exoU+strains.Their abundant protein secretion could boost exoS+/exoU+strains’potentials for cytotoxicity in vitro and pathogenicity in vivo.Genomic evidence indicates that exoU acquisition is likely mediated by horizontal gene transfer(HGT)of the pathogenicity island PAPI-2,while deletion of exoU was sufficient to mitigate virulence in the exoS+/exoU+strains.Furthermore,bioinformatics analysis showed that such exoS+/exoU+P.aeruginosa strains turned out to be widely distributed across the globe.Overall,the research provide detailed evidence for the high virulence and epidemicity of exoS+/exoU+strains of P.aeruginosa,highlighting an urgent need for surveillance against these high-risk hypervirulent strains.
