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331篇 您的检索式:作者名="Yun Fu"
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1Review on the Technological Development and Application of UAV Systems显示文摘Unmanned aerial vehicles(UAVs) are products of deep integration of aviation technology and Information technology(IT). The core factor of why the UAV industry can become a relatively independent industry and experience rapid development is the full penetration of IT into the aviation industry. Under the networked environment, UAVs are now becoming datadriven mobile agents. With the development of information technology, information transmission networking, operation space digitizing, and flight platform intelligentizing will become the main trends of technological development of UAV systems. The application of UAV systems is not merely a paradigm in transportation, but will more importantly produce 'UAV+' novel production modes,service formats, and combat modes associated with UAVs.These emerging trends will have profound impacts on future economic and social development as well as the building of armed forces.FAN Bangkui LI Yun ZHANG Ruiyu FU Qiqi 2020Chinese Journal of Electronics2020,29,2:26
2Selective Ferroptosis Inhibitor Liproxstatin-1 Attenuates Neurological Deficits and Neuroinflammation After Subarachnoid Hemorrhage显示文摘Ferroptosis is a form of iron-dependent regulated cell death.Evidence of its existence and the effects of its inhibitors on subarachnoid hemorrhage(SAH)is still lacking.In the present study,we found that liproxstatin-1 protected HT22 cells against hemin-induced injury by protecting mitochondrial functions and ameliorating lipid peroxidation.In in vivo experiments,we demonstrated the presence of characteristic shrunken mitochondria in ipsilateral cortical neurons after SAH.Moreover,liproxstatin-1 attenuated the neurological deficits and brain edema,reduced neuronal cell death,and restored the redox equilibrium after SAH.The inhibition of ferroptosis by liproxstatin-1 was associated with the preservation of glutathione peroxidase 4 and the downregulation of acylCoA synthetase long-chain family member 4 as well as cyclooxygenase 2.In addition,liproxstatin-1 decreased the activation of microglia and the release of IL-6,IL-1 b,and TNF-a.These data enhance our understanding of cell death after SAH and shed light on future preclinical studies.Yang Cao Yin Li Chao He Feng Yan Jian-Ru Li Hang-Zhe Xu Jian-Feng Zhuang Hang Zhou Yu-Cong Peng Xiong-Jie Fu Xiao-Yang Lu Yuan Yao Yu-Yu Wei Yun Tong Yi-Fu Zhou Lin Wang 2021Neuroscience Bulletin2021,37,4:16
3Evaluation of health benefit using Ben MAP-CE with an integrated scheme of model and monitor data during Guangzhou Asian Games显示文摘Guangzhou is the capital and largest city(land area:7287 km2)of Guangdong province in South China.The air quality in Guangzhou typically worsens in November due to unfavorable meteorological conditions for pollutant dispersion.During the Guangzhou Asian Games in November 2010,the Guangzhou government carried out a number of emission control measures that significantly improved the air quality.In this paper,we estimated the acute health outcome changes related to the air quality improvement during the 2010 Guangzhou Asian Games using a next-generation,fully-integrated assessment system for air quality and health benefits.This advanced system generates air quality data by fusing model and monitoring data instead of using monitoring data alone,which provides more reliable results.The air quality estimates retain the spatial distribution of model results while calibrating the value with observations.The results show that the mean PM_2.5concentration in November 2010 decreased by 3.5μg/m^3 compared to that in 2009 due to the emission control measures.From the analysis,we estimate that the air quality improvement avoided 106 premature deaths,1869 cases of hospital admission,and 20,026 cases of outpatient visits.The overall cost benefit of the improved air quality is estimated to be 165 million CNY,with the avoided premature death contributing 90%of this figure.The research demonstrates that Ben MAP-CE is capable of assessing the health and cost benefits of air pollution control for sound policy making.Dian Ding Yun Zhu Carey Jang Che-Jen Lin Shuxiao Wang Joshua Fu Jian Gao Shuang Deng Junping Xie Xuezhen Qiu 2016Journal of Environmental Sciences2016,28,4:13
4A vicinal effect for promoting catalysis of Pd1/TiO2:supports of atomically dispersed catalysts play more roles than simply serving as ligands显示文摘Atomically dispersing metal atoms on supports has been emerging as an effective strategy to maximize the atom utilization of metals for catalysis. However, due to the lack of effective tools to characterize the detailed structure of metal-support interface, the chemical functions of supports in atomically dispersed metal catalysts are hardly elucidated at the molecular level. In this work, an atomically dispersed Pd_1/TiO_2 catalyst with Ti(Ⅲ) vicinal to Pd is prepared and used to demonstrate the direct involvement of metal atoms on support in the catalysis of dispersed metal atoms. Systematic studies reveal that the Ti(Ⅲ)-O-Pd interface facilitates the activation of O_2 into superoxide(O_2^-), thus promoting the catalytic oxidation. The catalyst exhibits the highest CO turn-over frequency among ever-reported Pd-based catalysts,and enhanced catalysis in the combustion of harmful volatile organic compound(i.e., toluene) and greenhouse gas(i.e., methane). The demonstrated direct involvement of metal atoms on oxide support suggests that the real active sites of atomically dispersed metal catalysts can be far beyond isolated metal atoms themselves. Metal atoms on oxide supports in the vicinity serve as another vector to promote the catalysis of atomically dispersed metal catalysts.Pengxin Liu Yun Zhao Ruixuan Qin Lin Gu Peng Zhang Gang Fu Nanfeng Zheng 2018Science Bulletin2018,63,11:13
5Expression and alterations of different molecular form γ-glutamyl transferase and total RNA concentration during the carcinogenesis of rat hepatoma显示文摘INTRODUCTIONCarcinogenesisiscloselyrelatedwithDNAsynthesisandhypermetabolismofnucleicacid.γglutamyltransferase(GGT,EC2.3.2.2...TANG Qi Yun, YAO Deng Fu, LU Jian Xin, WU Xin Hua and MENG Xian Yong 1999World Journal of Gastroenterology1999,5,4:12
6Sequencing of p53 mutation in established human hepatocellular carcinoma cell line of HHC4 and HHC15 in nude mice显示文摘INTRODUCTIONAlthoughtheetiopathologyofhumanhepatocelularcarcinoma(hHCC)isstilunknown,alotofevidencestronglysuggestedthatinfec...YANG Shan Min, ZHOU Hong, CHEN Rui Chuan, WANG Yu Fang, CHEN Fu, ZHANG Chang Gong, ZHEN Yun, YAN Jiang Hua and SU Jin Hua 1998World Journal of Gastroenterology1998,4,6:11
7Rapid Eye Movement Sleep Behavior Disorder Symptoms Correlate with Domains of Cognitive Impairment in Parkinson's Disease显示文摘Jin-Ru Zhang Jing Chen Zi-Jiao Yang Hui-Jun Zhang Yun-Ting Fu Yun Shen Pei-Cheng He Cheng-Jie Mao Chun-Feng Liu 2016Chinese Medical Journal2016,,4:11
8Modeling xeroderma pigmentosum associated neurological pathologies with patients-derived iPSCs显示文摘干皮病 pigmentosum (XP ) 是联系 XP 的基因的变化引起的一组基因混乱,导致 DNA 修理的缺陷。XP 病人经常展出神经病学的退化,而是内在的机制是未知的,部分地由于合适的疾病模型的缺乏。这里,我们产生了包括 XPA, XPB, XPC, XPG,和 XPV 在五不同 XP 基因怀有变化的病人特定的导致的 pluripotent 干细胞(iPSCs ) 。这些 iPSCs 进一步被区分到神经房间,并且他们到 DNA 损坏应力的危险性被调查。在神经干细胞(NSC ) 或神经原的 XPA 的变化导致了严重 DNA 损坏修理缺点,并且有变异的 XPA 的这些神经房间对 DNA 导致损坏的 apoptosis 过分敏感。因此, XP 变异的神经房间代表珍贵工具在 XP 病人澄清神经病学的畸形的分子的机制。Lina Fu Xiuling Xu Ruotong Ren Jun Wu Weiqi Zhang Jiping Yang Xiaoqing Ren Si Wang Yang Zhao Liang Sun Yang Yu Zhaoxia Wang Ze Yang Yun Yuan Jie Qiao Juan Carlos Izpisua Belmonte Jing Qu Guang-Hui Liu 2016Protein & Cell2016,7,3:11
9Intra-operative frozen section diagnosis of breast lesions:a retrospective analysis of 13 243 Chinese patients显示文摘背景尽管为胸肿瘤学的 cytological 方法在最近的十年被使用了, intra 起作用的冻结的节在做治疗学的决定一直在起一个重要作用。我们分析了冻结的节的一个大系列最后 15 年为汉语诊断在内的胸损害的盒子。经验被期望与胸 lesions.Methods 增加盒子的诊断精确性数据从连续与在 1988 ~ 2002 之间的 intra 起作用的冻结的节诊断的胸损害的 13243 个盒子与在由盒子举止的一种情况中的石蜡节相比。原因假否定、积极诊断象一样推迟诊断是 analyzed.Results 117 个盒子(0.9%) 虚伪地被诊断,与一个假积极盒子和 116 个假否定盒子。47 个盒子(0.4%) 的诊断被推迟。几损害的比例有 patients'ages 的特征。损害的六种类型(假侵略,仙子乳突淋瘤,乳头管的腺瘤,红润的 adenosis , sclerosing adenosis ,和淀粉粒质房间肿瘤)可以导致假积极,并且四种类型(词法变化反应化疗,很好区分的乳突的癌,侵略的小叶片的癌,并且管状的癌)到一假否定。粗野、显微镜的调查结果可能在在三的显微镜、临床的调查结果打的损害(光线的疤和红润的 adenosis ) 的二种类型是不一致的(ganulomatous 乳腺炎乳房,管 ectasia,和胖坏死) ,并且三种类型(丰富的胖或硬术的纸巾;边线损害和变化化疗以后) 错误地是可能的 Intra 起作用的冻结的节能精确地识别的 classified.Conclusions 在许多例子的胸损害,由于诊断限制的更诊断的经验和理解,导致更少错误。NIU Yun FU Xi-lin YU Yong Peizhong Peter Wang CAO Xu-chen 2007Chinese Medical Journal2007,,8:11
10CRISPR/Cas9-mediated targeted gene correction in amyotrophic lateral sclerosis patient iPSCs显示文摘Lixia Wang Fei Yi Lina Fu Jiping Yang Si Wang Zhaoxia Wang Keiichiro Suzuki Liang Sun Xiuling Xu Yang Yu Jie Qiao Juan Carlos Izpisua Belmonte Ze Yang Yun Yuan Jing Qu Guang-Hui Liu 2017Protein & Cell2017,8,5:10
11地塞米松可以减少由重症急性胰腺炎引起的肾脏微血管内皮糖萼的损伤(英文)显示文摘目的:明确地塞米松可以减少重症急性胰腺炎(SAP)引起的肿瘤坏死因子(TNF-α)的释放,减轻TNF-α导致的肾脏血管内皮糖萼的降解,从而改善肾脏微循环和缓解肾损伤。创新点:本研究通过小鼠活体研究的方法,建立小鼠重症急性胰腺炎模型,并用地塞米松进行干预对照,采用透射电镜、激光多谱勒和酶联免疫的方法,检测了各组小鼠肾脏血管内皮糖萼的完整性、肾血流灌注和TNF-α表达情况,阐明了地塞米松对内皮糖萼的保护作用。方法:通过'胰管结扎+腹腔内雨蛙素注射'的方法建立SAP模型,分别留取各组小鼠的血液和组织标本,采用透射电镜观察内皮糖萼的损伤情况,用酶联免疫检测血清TNF-α和糖萼成份多配体聚糖的浓度,并用激光多谱勒检测活体小鼠肾脏的灌注,分析地塞米松对内皮糖萼的保护和改善肾脏灌注的作用。结论:SAP可以引起TNF-α的大量释放,并导致内皮糖萼的降解和肾脏灌注下降,而地塞米松可以减少TNF-α的释放,减轻糖萼的降解,改善肾脏血流灌注。Wen-qiao YU Shao-yang ZHANG Shui-qiao FU Qing-hui FU Wei-na LU Jian ZHANG Zhong-yan LIANG Yun ZHANG Ting-bo LIANG 2019Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2019,20,4:10
12Intermittent fasting promotes adipose thermogenesis and metabolic homeostasis via VEGF-mediated alternative activation of macrophage显示文摘Kyoung-Han Kim Yun Hye Kim Joe Eun Son Ju Hee Lee Sarah Kim Min Seon Choe Joon Ho Moon Jian Zhong Kiya Fu Florine Lenglin Jeong-Ah Yoo Philip J Bilan Amira Klip Andras Nagy Jae-Ryong Kim Jin Gyoon Park Samer MI Hussein Kyung-Oh Doh Chi-chung Hui Hoon-Ki Sung 2017Cell Research2017,27,11:9
13A Confocal Endoscope for Cellular Imaging显示文摘Since its inception, endoscopy has aimed to establish an immediate diagnosis that is virtually consistent with a histologic diagnosis. In the past decade, confocal laser scanning microscopy has been brought into endoscopy, thus enabling in vivo microscopic tissue visualization with a magnification and resolution comparable to that obtained with the ex vivo microscopy of histological specimens. The major challenge in the development of instrumentation lies in the miniaturization of a fiber-optic probe for microscopic imaging with micron-scale resolution. Here, we present the design and construction of a confocal endoscope based on a fiber bundle with 1.4-μm lateral resolution and 8-frames per second(fps) imaging speed. The fiber-optic probe has a diameter of 2.6 mm that is compatible with the biopsy channel of a conventional endoscope. The prototype of a confocal endoscope has been used to observe epithelial cells of the gastrointestinal tracts of mice and will be further demonstrated in clinical trials. In addition, the confocal endoscope can be used for translational studies of epithelial function in order to monitor how molecules work and how cells interact in their natural environment.Jiafu Wang Min Yang Li Yang Yun Zhang Jing Yuan Qian Liu Xiaohua Hou Ling Fu 2015Engineering2015,1,3:9
14Genome sequencing and phylogenetic analysis of Banna virus(genus Seadornavirus,family Reoviridae)isolated from Culicoides显示文摘In an investigation of blood-sucking insects and arboviruses, a virus(YN12243) was isolated from Culicoides samples collected in the Sino-Burmese border region of Yunnan Province, China. The virus caused cytopathic effect(CPE) in C6/36 cells and passaged stably. Polyacrylamide gel analysis showed that the genome of YN12243 was composed of 12 segments of double-stranded RNA(dsRNA), with a distribution pattern of 6-6. The nucleotide and amino acid sequences of the coding region(1.12 segments) were17,803 bp and 5,925 amino acids in length, respectively. The phylogenetic analysis of VP1 protein(RdRp) revealed that YN12243 belonged to genus Seadornavirus of family Reoviridae, and further analysis indicated that YN12243 belongs to the Banna virus(BAV) genotype A2. Additionally, YN12243 was located in the same evolutionary cluster as BAV strains isolated from different mosquito species, suggesting that the BAV isolated from Culicoides does not have species barriers. These results indicate that Culicoides can also be a vector for BAV. In view of the hematophagous habits of Culicoides on cattle, horses, deer, and other large animals, as well as the possibility of spreading and causing a variety of animal arboviral diseases, it is important to improve infection detection and monitor the BAV in large livestock.Song Song Yuanyuan Li Shihong Fu Wenwen Lei Xiaofang Guo Yun Feng Xiaoyan Gao Xiaolong Li Zhonghua Yang Ziqian Xu Ying He Huanyu Wang Hongning Zhou Bin Wang Xiaoqing Lu Guodong Liang 2017Science China(Life Sciences)2017,60,12:8
15Relationship between Iodine Content in Household Iodized Salt and Thyroid Volume Distribution in Children显示文摘Objective To assess the effect of different levels of salt iodine content on thyroid volume(ThV) distribution using data from the 1999, 2011, and 2014 Chinese national iodine deficiency disorder(IDD) surveys. Methods Probability proportion to size(PPS) sampling method was used to obtain a representative national sample of 34,547, 38,932, and 47,188 Chinese children aged 8-10 years in 1999, 2011, and 2014 Chinese national IDD surveys, respectively. The iodine content in household iodized salt and urinary iodine concentration were measured and thyroid ultrasound examination was performed. The data were analyzed by SAS software using histograms and box plots. The skewness and kurtosis were calculated for testing the normality of ThV. Results The median iodine content in household iodized salt dropped from 42.30 mg/kg in 1999 to 25.00 mg/kg in 2014. The median urinary iodine concentration of children aged 8-10 years decreased from 306.0 μg/L in 1999 to 197.9 μg/L in 2014. The median and interquartile range(IQR) of ThV in 1999, 2011, and 2014 surveys were 3.44 m L and 1.50 m L, 2.60 m L and 1.37 m L, 2.63 m L and 1.25 m L, respectively. The skewness and kurtosis of ThV distribution in 1999, 2011, and 2014 surveys were 1.34 and 5.84, 0.98 and 3.54, 1.27 and 5.49, respectively. Conclusion With reduced salt iodization levels, the median urinary iodine concentration and median ThV of children decreased significantly, and the symmetry of the ThV distribution improved.CHAO Hong ZHANG Yu Fu LIU Peng HAN Yun Feng LIU Shou Jun 2016Biomedical and Environmental Sciences2016,29,6:8
16Efficacy and safety of Shenyankangfu Tablet,a Chinese patent medicine,for primary glomerulonephritis:A multicenter randomized controlled trial显示文摘Background:Shenyankangfu Tablet(SYKFT)is a Chinese patent medicine that has been used widely to decrease proteinuria and the progression of chronic kidney disease.Objective:This trial compared the efficacy and safety of SYKFT,for the control of proteinuria in primary glomerulonephritis patients,against the standard drug,losartan potassium.Design,setting,participants and intervention:This was a multicenter,double-blind,randomized,controlled clinical trial.Primary glomerulonephritis patients,aged 18-70 years,with blood pressure≤140/90 mmHg,estimated glomerular filtration rate(eGFR)>45 mL/min per 1.73 ㎡,and 24-hour proteinuria level of 0.5-3.0 g,were recruited in 41 hospitals across 19 provinces in China and were randomly divided into five groups:SYKFT,losartan potassium 50 mg or 100 mg,SYKFT plus losartan potassium 50 mg or 100 mg.Main outcome measu res:The primary outcome was change in the 24-hour proteinuria level,after 48 weeks of treatment.Results:A total of 735 participants were enrolled.The percent decline of urine protein quantification in the SYKFT group after 48 weeks was 8.78%±2.56%(P=0.006)more than that in the losartan 50 mg group,which was 0.51%±2.54%(P=1.000)less than that in the losartan 100 mg group.Compared with the losartan potassium 50 mg group,the SYKFT plus losartan potassium 50 mg group had a 13.39%±2.49%(P<0.001)greater reduction in urine protein level.Compared with the losartan potassium 100 mg group,the SYKFT plus losartan potassium 100 mg group had a 9.77%±2.52%(P=0.001)greater reduction in urine protein.With a superiority threshold of 15%,neither was statistically significant.eGFR,serum creatinine and serum albumin from the baseline did not change statistically significant.The average change in TCM syndrome score between the patients who took SYKFT(-3.00[-6.00,-2.00])and who did not take SYKFT(-2.00[-5.00,0])was statistically significant(P=0.003).No obvious adverse reactions were observed in any group.Conclusion:SYKFT decreased the proteinuria and improved the TCM syndrome scores of primary glomerulonephritis patients,with no change in the rate of decrease in the eGFR.SYKFT plus losartan potassium therapy decreased proteinuria more than losartan potassium therapy alone.Trial registration number:NCT02063100 on ClinicalTrials.gov.Jie Wu Shu-wei Duan Hong-tao Yang Yue-yi Deng Wei Li Ya-ni He Zhao-hui Ni Yong-li Zhan Shan Lin Zhi-yong Guo Jun Zhu Jing-ai Fang Xu-sheng Liu Li-hua Wang Rong Wang Nian-song Wang Xiao-hong Cheng Li-qun He Ping Luo Shi-ren Sun Ji-feng Sun Ai-ping Yin Geng-ru Jiang Hong-yu Chen Wen-hu Liu Hong-li Lin Meng Liang Lu Ma Ming Chen Li-qun Song Jian Chen Qing Zhu Chang-ying Xing Yun Li Ji-ning Gao Rong-shan Li Ying Li Hao Zhang Ying Lu Qiao-ling Zhou Jun-zhou Fu Qiang He Guang-yan Cai Xiang-mei Chen 2021Journal of Integrative Medicine2021,19,2:8
17Modeling CADASIL vascular pathologies with patient-derived induced pluripotent stem cells显示文摘Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy(CADASIL)is a rare hereditary cerebrovascular disease caused by a NOTCH3 mutation.However,the underlying cellular and molecular mechanisms remain unidentified.Here,we generated non-integrative induced pluripotent stem cells(iPSCs)from fibroblasts of a CADASIL patient harboring a heterozygous NOTCH3 mutation(c.3226C>T,p.R1076C).Vascular smooth muscle cells(VSMCs)differentiated from CADASIL-specific iPSCs showed gene expression changes associated with disease phenotypes,including activation of the NOTCH and NF-kB signaling pathway,cytoskeleton disorganization,and excessive cell proliferation.In comparison,these abnormalities were not observed in vascular endothelial cells(VECs)derived from the patients iPSCs.Importantly,the abnormal upregulation of NF-kB target genes in CADASIL VSMCs was diminished by a NOTCH pathway inhibitor,providing a potential therapeutic strategy for CADASIL.Overall,using this iPSCbased disease model,our study identified clues for studying the pathogenic mechanisms of CADASIL and developing treatment strategies for this disease.Chen Ling Zunpeng Liu Moshi Song Weiqi Zhang Si Wang Xiaoqian Liu Shuai Ma Shuhui Sun Lina Fu Qun Chu Juan Carlos Izpisua Belmonte Zhaoxia Wang Jing Qu Yun Yuan Guang-Hui Liu 2019Protein & Cell2019,10,4:7
18A Methodology for Reliability of WSN Based on Software Defined Network in Adaptive Industrial Environment显示文摘As communication technology and smart manufacturing have developed, the industrial internet of things(IIo T)has gained considerable attention from academia and industry.Wireless sensor networks(WSNs) have many advantages with broad applications in many areas including environmental monitoring, which makes it a very important part of IIo T. However,energy depletion and hardware malfunctions can lead to node failures in WSNs. The industrial environment can also impact the wireless channel transmission, leading to network reliability problems, even with tightly coupled control and data planes in traditional networks, which obviously also enhances network management cost and complexity. In this paper, we introduce a new software defined network(SDN), and modify this network to propose a framework called the improved software defined wireless sensor network(improved SD-WSN). This proposed framework can address the following issues. 1) For a large scale heterogeneous network, it solves the problem of network management and smooth merging of a WSN into IIo T. 2) The network coverage problem is solved which improves the network reliability. 3) The framework addresses node failure due to various problems, particularly related to energy consumption.Therefore, it is necessary to improve the reliability of wireless sensor networks, by developing certain schemes to reduce energy consumption and the delay time of network nodes under IIo T conditions. Experiments have shown that the improved approach significantly reduces the energy consumption of nodes and the delay time, thus improving the reliability of WSN.Ying Duan Wenfeng Li Xiuwen Fu Yun Luo Lin Yang 2018IEEE/CAA Journal of Automatica Sinica2018,5,1:7
19A Multicenter Study of Viral Aetiology of Community-Acquired Pneumonia in Hospitalized Children in Chinese Mainland显示文摘Community-acquired pneumonia(CAP) is one of the leading causes of morbidity and mortality in children worldwide.In this study,we aimed to describe the aetiology of viral infection of pediatric CAP in Chinese mainland.During November2014 to June 2016,the prospective study was conducted in 13 hospitals.The hospitalized children under 18 years old who met the criteria for CAP were enrolled.The throat swabs or nasopharyngeal aspirates(NPAs) were collected which were then screened 18 respiratory viruses using multiplex PCR assay.Viral pathogens were present in 56.6%(1539/2721) of the enrolled cases,with the detection rate of single virus in 39.8% of the cases and multiple viruses in 16.8% of the cases.The most frequently detected virus was respiratory syncytial virus(RSV)(15.2%,414/2721).The highest detection rate of virus was in <6-month-age group(70.7%,292/413).RSV,human metapneumovirus(HMPV),human parainfluenza viruses(HPIVs) and influenza B virus(Flu B) showed the similar prevalence patterns both in north and south China,but HPIVs,Flu A,human bocavirus(HBoV),human adenovirus(HAdV) and human coronaviruses(HCoVs) showed the distinct circulating patterns in north and south China.Human enterovirus/human rhinovirus(HEV/HRV)(27.6%,27/98),HBoV(18.4%,18/98),RSV(16.3%,16/98) and HMPV(14.3%,14/98) were the most commonly detected viruses in severe pneumonia cases with single virus infection.In conclusion,viral pathogens are frequently detected in pediatric CAP cases and may therefore play a vital role in the aetiology of CAP.RSV was the most important virus in hospitalized children with CAP in Chinese mainland.Yun Zhu Baoping Xu Changchong Li Zhimin Chen Ling Cao Zhou Fu Yunxiao Shang Aihuan Chen Li Deng Yixiao Bao Yun Sun Limin Ning Shuilian Yu Fang Gu Chunyan Liu Ju Yin Adong Shen Zhengde Xie Kunling Shen 2021Virologica Sinica2021,36,6:7
20Durability of neutralizing antibodies and T-cell response post SARS-CoV-2 infection显示文摘The ongoing pandemic of coronavirus disease 19(COVID-19)is caused by a newly discoveredβcoronavirus named severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).How long the adaptive immunity triggered by SARS-CoV-2 can last is of critical clinical relevance in assessing the probability of second infection and efficacy of vaccination.Here we examined,using ELISA,the IgG antibodies in serum specimens collected from 17 COVID-19 patients at 6–7 months after diagnosis and the results were compared to those from cases investigated 2 weeks to 2 months post-infection.All samples were positive for IgGs against the S-and N-proteins of SARS-CoV-2.Notably,14 samples available at 6–7 months post-infection all showed significant neutralizing activities in a pseudovirus assay,with no difference in blocking the cell-entry of the 614D and 614G variants of SARS-CoV-2.Furthermore,in 10 blood samples from cases at 6–7 months post-infection used for memory T-cell tests,we found that interferonγ-producing CD4+and CD8+cells were increased upon SARS-CoV-2 antigen stimulation.Together,these results indicate that durable anti-SARS-CoV-2 immunity is common in convalescent population,and vaccines developed from 614D variant may offer protection from the currently predominant 614D variant of SARS-CoV-2.Yun Tan Feng Liu Xiaoguang Xu Yun Ling Weijin Huang Zhaoqin Zhu Mingquan Guo Yixiao Lin Ziyu Fu Dongguo Liang Tengfei Zhang Jian Fan Miao Xu Hongzhou Lu Saijuan Chen 2020Frontiers of Medicine2020,14,6:6
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