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11篇 您的检索式:作者名="Xuyan He"
    题名 作者 年代 出处 被引量
1Air pollution characteristics and their relationship with emissions and meteorology in the Yangtze River Delta region during 2014–2016显示文摘With rapid economic growth and urbanization, the Yangtze River Delta(YRD) region in China has experienced serious air pollution challenges. In this study, we analyzed the air pollution characteristics and their relationship with emissions and meteorology in the YRD region during 2014–2016. In recent years, the concentrations of all air pollutants, except O3,decreased. Spatially, the PM2.5, PM10, SO2, and CO concentrations were higher in the northern YRD region, and NO2 and O3 were higher in the central YRD region. Based on the number of non-attainment days(i.e., days with air quality index greater than 100), PM2.5 was the largest contributor to air pollution in the YRD region, followed by O3, PM10, and NO2.However, particulate matter pollution has declined gradually, while O3 pollution worsened.Meteorological conditions mainly influenced day-to-day variations in pollutant concentrations. PM2.5 concentration was inversely related to wind speed, while O3 concentration was positively correlated with temperature and negatively correlated with relative humidity.The air quality improvement in recent years was mainly attributed to emission reductions.During 2014–2016, PM2.5, PM10, SO2, NOx, CO, NH3, and volatile organic compound(VOC)emissions in the YRD region were reduced by 26.3%, 29.2%, 32.4%, 8.1%, 15.9%, 4.5%, and0.3%, respectively. Regional transport also contributed to the air pollution. During regional haze periods, pollutants from North China and East China aggravated the pollution in the YRD region. Our findings suggest that emission reduction and regional joint prevention and control helped to improve the air quality in the YRD region.Tao Ma Fengkui Duan Kebin He Yu Qin Dan Tong Guannan Geng Xuyan Liu Hui Li Shuo Yang Siqi Ye Beiyao Xu Qiang Zhang Yongliang Ma 2019Journal of Environmental Sciences2019,31,9:26
2The zinc transporter Slc39a5 controls glucose sensing and insulin secretion in pancreatic β-cells via Sirt1- and Pgc-1α-mediated regulation of Glut2显示文摘Zinc levels are high in pancreatic β-cells, and zinc is involved in the synthesis, processing and secretion of insulin in these cells. However, precisely how cellular zinc homeostasis is regulated in pancreatic β-cells is poorly understood. By screening the expression of 14 Slc39a metal importer family member genes, we found that the zinc transporter Slc39a5 is significantly downregulated in pancreatic β-cells in diabetic db/db mice, obese ob/ob mice and high-fat diet-fed mice. Moreover,β-cell-specific Slc39a5 knockout mice have impaired insulin secretion. In addition, Slc39a5-deficient pancreatic islets have reduced glucose tolerance accompanied by reduced expression of Pgc-1α and its downstream target gene Glut2. The down-regulation of Glut2 in Slc39a5-deficient islets was rescued using agonists of Sirt1, Pgc-1α and Ppar-γ. At the mechanistic level, we found that Slc39a5-mediated zinc influx induces Glut2 expression via Sirt1-mediated Pgc-1α activation. These findings suggest that Slc39a5 may serve as a possible therapeutic target for diabetes-related conditions.Xinhui Wang Hong Gao Wenhui Wu Enjun Xie Yingying Yu Xuyan He Jin Li Wanru Zheng Xudong Wang Xizhi Cao Zhuoxian Meng Ligong Chen Junxia Min Fudi Wang 2019Protein & Cell2019,10,6:6
3E3 ligase FBXW7 aggravates TMPD-induced systemic lupus erythematosus by promoting cell apoptosis显示文摘Systemic lupus erythematosus(SLE)is a systemic autoimmune disease,and the pathogenesis of SLE has not been fully elucidated.The E3 ubiquitin ligase FBXW7 has been well characterized in cancer as a tumor suppressor that can promote the ubiquitination and subsequent degradation of various oncoproteins;however,the potential role of FBXW7 in autoimmune diseases is unclear.In the present study,we identified that FBXW7 is a crucial exacerbating factor for SLE development and progression in a mouse model induced by 2,6,10,14-tetramethylpentadecane(TMPD).Myeloid cell-specific FBXW7-deficient(Lysm+FBXW7f/f)C57BL/6 mice showed decreased immune complex accumulation,glomerulonephritis,glomerular mesangial cell proliferation,and basemembrane thickness in the kidney.Lysm+FBXW7f/f mice produced fewer anti-Sm/RNP and anti-ANA autoantibodies and showed a decreased MHC II expression in B cells.In Lysm+FBXW7f/f mice,we observed that cell apoptosis was reduced and that fewer CD11b+Ly6Chi inflammatory monocytes were recruited to the peritoneal cavity.Consistently,diffuse pulmonary hemorrhage(DPH)was also decreased in Lysm+FBXW7f/f mice.Mechanistically,we clarified that FBXW7 promoted TMPD-induced cell apoptosis by catalyzing MCL1 degradation through K48-linked ubiquitination.Our work revealed that FBXW7 expression in myeloid cells played a crucial role in TMPD-induced SLE progression in mice,which may provide novel ideas and theoretical support for understanding the pathogenesis of SLE.Zhenlu Chong Chunjing Bao Jia He Tianxiao Chen Lijia Zhong Gaopeng Li Huanle Li Lutong Fang Yinjing Song Guoxiang Fu Xuyan Yang Lihua Lai Yang Liu Qingqing Wang 2018Cellular & Molecular Immunology2018,15,12:2
4Comparison of toxic reaction of Tripterygium wilfordii multiglycoside in normal and adjuvant arthritic rats显示文摘Jian Li Yongheng Lu Cheng Xiao Cheng Lu Xuyan Niu Xiaojuan He Hongyan Zhao Yong Tan Aiping Lu 2011Journal of Ethnopharmacology2011,,2:1
5Biosafety materials:Ushering in a new era of infectious disease diagnosis and treatment with the CRISPR/Cas system显示文摘Despite multiple virus outbreaks over the past decade,including the devastating coronavirus disease 2019(COVID-19)pandemic,the lack of accurate and timely diagnosis and treatment technologies has wreaked havoc on global biosecurity.The clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated proteins(Cas)system has the potential to address these critical needs for tackling infectious diseases to detect viral nucleic acids and inhibit viral replication.This review summarizes how the CRISPR/Cas system is being utilized for the treatment and diagnosis of infectious diseases with the help of biosafety materials and highlights the design principle and in vivo and in vitro efficacy of advanced biosafety materials used to deal with virus attacks.Yuquan Zhang Ziyue Li Julien Milon Essola Kun Ge Xuyan Dai Huining He Haihua Xiao Yuhua Weng Yuanyu Huang 2022Biosafety and Health2022,4,2:1
61α,25(OH)2D3对斑马鱼脂肪组织中脂肪酸氧化的促进显示文摘文章简介1α,25(OH)2D3被认为是哺乳类动物的矿物质代谢的重要调控激素,但其在动物脂肪组织代谢中的精确机制却不够清晰。肝细胞微小体中的细胞色素P450酶2R1(CYP2R1)是活化维生素D3的第一步,即25位的羟基化的羟基化酶,此功能在脊椎动物中是保守。Xuyan Peng Guohui Shang Wenqing Wang Xiaowen Chen Qiyong Lou Gang Zhai Dongliang Li Zhenyu Du Yali Ye Xia Jin Jiangyan He Yi Zhang 殷战 2018科学新闻2018,0,4:0
7细菌效应蛋白揭示V-ATPase-ATG16L1通路介导异源自噬的研究显示文摘文章简介真核细胞通过选择性自噬的方式识别胞内病原体的过程称为异源自噬(xenophagy)。异源自噬在宿主天然免疫防御中发挥重要作用,但其触发机制仍不清楚。本研究通过对鼠伤寒沙门氏菌进行全基因组转座子突变筛选,鉴定出一个可强力阻断异源自噬的沙门氏菌III型分泌系统效应蛋白Sop F。更重要的是,Sop F可以抑制各种细菌感染引起的异源自噬,但不影响经典自噬通路。许悦 Ping Zhou Sen Cheng Qiuhe Lu Kathrin Nowak Ann-Katrin Hopp Lin Li Xuyan Shi Zhiwei Zhou Wenqing Gao Da Li Huabin He Xiaoyun Liu Jingjin Ding Michael O.Hottiger 邵峰 2020科学新闻2020,,2:0
8High-frequency characterization of high-speed modulators and photodetectors in a link with low-speed photonic sampling显示文摘We propose a low-speed photonic sampling for independent high-frequency characterization of a Mach–Zehnder modulator(MZM)and a photodetector(PD)in an optical link.A low-speed mode-locked laser diode(MLLD)provides an ultrawideband optical stimulus with scalable frequency range,working as the photonic sampling source of the link.The uneven spectrum lines of the MLLD are firstly characterized with symmetric modulation within the interesting frequency range.Then,the electro-optic modulated signals are down-converted to the first Nyquist frequency range,yielding the self-referenced extraction of modulation depth and half-wave voltage of the MZM without correcting the responsivity fluctuation of the PD in the link.Finally,the frequency responsivity of the PD is self-referenced measured under null modulation of the MZM.As frequency responses of the MZM and the PD can be independently obtained,our method allows self-referenced high-frequency measurement for a high-speed optical link.In the proof-of-concept experiment,a 96.9 MS/s MLLD is used for measuring a MZM and a PD within the frequency range up to 50 GHz.The consistency between our method and the conventional method verifies that the ultra-wideband and self-referenced high-frequency characterization of high-speed MZMs and PDs.Mengke Wang Shangjian Zhang Zhao Liu Xuyan Zhang Yutong He Yangxue Ma Yali Zhang Zhiyao Zhang Yong Liu 2021Journal of Semiconductors2021,42,4:0
9Mechanism of herbal pairs with the properties of Qi-tonifying,blood activation,blood-stasis breaking in treating coronary heart disease显示文摘OBJECTIVE:To investigating the molecular mechanism of herbal pairs in three types of Chinese medicinals:Qi-tonifying,blood activation,blood-stasis breaking in treatment of coronary heart disease(CHD).METHODS:The components of six herbs were searched in Chinese medicine dictionary and their target proteins were found in PubChem.CHD genes were obtained from PubMed gene database.Ingenuity Pathways Analysis was used to build the pharmacological network of three herbal pairs and CHD molecular network.The canonical pathways between each herbal pair network and CHD network was compared to decipher the molecular mechanism on three herbal pairs in treating CHD.RESULTS:The network analysis showed that there were the common signal pathways of three herbal pairs in treating CHD including hypoxia signaling in the cardiovascular system,Hypoxia-inducible factor 1-alpha signaling,glucocorticoid receptor signaling,G-Protein coupled receptor signaling and pregnane X receptor/retinoid X receptor(PXR/RXR)activation.Further to analyze cardiovascular signaling,cytokine signaling and cytokine signaling,the effective molecules for three herbal pairs in treating CHD included HIF1α and estrogen receptor 1,Qi-tonifying herbal pair included albumin and matrix metallopeptidase 2,and blood-activation herbal pair included estrogen receptor 2 and peroxisome proliferator-activated receptor-γ.CONCLUSION:Each herbal pair can affect some respective CHD-related functions and pathways,meanwhile three herbal pairs exert some mutual effects on CHD-related functions and pathways.Mutual effects of three herbal pairs may be the key components of their total molecular mechanisms and respective effects of each herbal pair may be the characteristic components of their respective molecular mechanism.Yang Jing Li Jian Li Li Zhao Ning Niu Xuyan He Xiaojuan Jiang Miao Lü Aiping Lei Yan 2017Journal of Traditional Chinese Medicine2017,37,2:0
10Extracorporeal membrane oxygenation as a platform for the management of massive hemoptysis caused by bronchial artery aneurysm显示文摘To the editor:Extracorporeal membrane oxygenation (ECMO) can be considered in patients with life-threatening acute respiratory failure despite adequate management with a mechanical ventilator.However,due to the perceived risk of increased bleeding secondary to the use of systemic anticoagulation,ECMO is often not used to treat patients with severe hemoptysis.Here we report a case of successful application of ECMO as a bridge to bronchial angiographic embolism (BAE) and surgery therapy in a patient with fatal hemoptysis and refractory hypoxia caused by bronchial artery aneurysm.Cao Xiaowei He Hangyong Li Xuyan Sun Bing 2014Chinese Medical Journal2014,,16:0
11Enzyme-free photothermally amplified fluorescent immunosorbent assay(PAFISA)for sensitive cytokine quantification显示文摘Cytokine monitoring has attracted great attention due to its significance in the diagnosis and treatment of many diseases,such as tumors,microbial infections,and immunological diseases.Enzyme-linked immunosorbent assay(ELISA)is one of the most popular methods in cytokine detection,ascribing to the lavish signal amplification methods in the ELISA platform.In addition to classical enzymes,other signal amplifiers such as fluorescent probes,artificial nano-enzymes,and photothermal reagents have been applied to reduce the detection limit and produce more sensitive ELISA kits.Due to the accumulative effect of heat,photothermal reagents are promising materials in the signal amplification of ELISA.However,the lack of efficient photothermal generation material at an aggregate scale may delay the further development of this area.In this contribution,based on an efficient organic photothermal aggregate material,an enzyme-free photothermally amplified fluorescent immunosorbent assay system consisting of an assay microfluidic chip and detecting platform was developed.The photothermal nanoparticles with highly efficient photothermal conversion by harvesting energy via excited-state intramolecular motions and enlarging molar absorptivity were successfully prepared.The detection concentration at 50 pg/mL of interleukin-2 was achieved,realizing a signal improvement of detection limits by 20-fold compared to that of previously reported photothermal ELISA.The microscopic imaging integrated with plane sweeping technology provided high spatial resolution and precision,indicating the potential of achieving high throughput profiling at the microscale.Moreover,as an alternative excitation source,light-emitting diode not only provided a more affordable and miniaturized detection system but also revealed the great feasibility of intramolecular motion-induced photothermy nanoparticles for biological analyses.Dian Li Wei He Xuyan Lin Xiaodong Cui Stefan Nagl Angela Ruohao Wu Ryan T.K.Kwok Renhua Wu Ben Zhong Tang 2023Aggregate2023,4,6:0
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