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Yang TY, Wan Q, Yan DY, Zhu Z, Wang ZW, Peng C, Huang YB, Yu R, Hu J, Mao ZQ, Li S, Yang SA, Zheng H, Jia JF, Shi YG, Xu N. Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order. Nat Mater 2020; 19:27-33. [PMID: 31591532 DOI: 10.1038/s41563-019-0494-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
One or a few layers of van der Waals (vdW) materials are promising for applications in nanoscale electronics. Established properties include high mobility in graphene, a large direct gap in monolayer MoS2, the quantum spin Hall effect in monolayer WTe2 and so on. These exciting properties arise from electron quantum confinement in the two-dimensional limit. Here, we use angle-resolved photoemission spectroscopy to reveal directional massless Dirac fermions due to one-dimensional confinement of carriers in the layered vdW material NbSi0.45Te2. The one-dimensional directional massless Dirac fermions are protected by non-symmorphic symmetry, and emerge from a stripe-like structural modulation with long-range translational symmetry only along the stripe direction as we show using scanning tunnelling microscopy. Our work not only provides a playground for investigating further the properties of directional massless Dirac fermions, but also introduces a unique component with one-dimensional long-range order for engineering nano-electronic devices based on heterostructures of vdW materials.
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Affiliation(s)
- T Y Yang
- Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Q Wan
- Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - D Y Yan
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Z Zhu
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Z W Wang
- School of Physics and Technology, Wuhan University, Wuhan, China
| | - C Peng
- Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Y B Huang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - R Yu
- School of Physics and Technology, Wuhan University, Wuhan, China
| | - J Hu
- Department of Physics, University of Arkansas, Fayetteville, AR, USA
| | - Z Q Mao
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Si Li
- Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore, Singapore
| | - Shengyuan A Yang
- Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore, Singapore
| | - Hao Zheng
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Jin -Feng Jia
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Y G Shi
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
| | - N Xu
- Institute for Advanced Studies, Wuhan University, Wuhan, China.
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Wang Y, Lv YB, Chu C, Wang M, Xie BQ, Wang L, Yang F, Yan DY, Yang RH, Yang J, Ren Y, Yuan ZY, Mu JJ. Plasma Renalase is Not Associated with Blood Pressure and Brachial-Ankle Pulse Wave Velocity in Chinese Adults With Normal Renal Function. Kidney Blood Press Res 2016; 41:837-847. [PMID: 27871085 DOI: 10.1159/000452587] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS This study aimed to investigate the association of renalase with blood pressure (BP) and brachial-ankle pulse wave velocity (baPWV) in order to better understand the role of renalase in the pathogenesis of hypertension and atherosclerosis. METHODS A total of 344 subjects with normal kidney function were recruited from our previously established cohort in Shaanxi Province, China. They were divided into the normotensive (NT) and hypertensive (HT) groups or high baPWV and normal baPWV on the basis of BP levels or baPWV measured with an automatic waveform analyzer. Plasma renalase was determined through an enzyme-linked immunosorbent assay. RESULTS Plasma renalase did not significantly differ between HT and NT groups (3.71 ± 0.69 µg/mL vs. 3.72 ± 0.73 μg/mL, P = 0.905) and between subjects with and without high baPWV (3.67 ± 0.66 µg/mL vs. 3.73 ± 0.74 µg/mL, P = 0.505). However, baPWV was significantly higher in the HT group than in the NT group (1460.4 ± 236.7 vs. 1240.7 ± 174.5 cm/s, P < 0.001). Plasma renalase was not correlated with BP levels and baPWV in the entire group. Linear and logistic regression analysis revealed that plasma renalase was not significantly associated with hypertension and high baPWV. CONCLUSION Plasma renalase may not be associated with BP and baPWV in Chinese subjects with normal renal function.
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Affiliation(s)
- Yang Wang
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
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Lv YB, Wang Y, Ma WG, Yan DY, Zheng WL, Chu C, Guo TS, Yuan ZY, Mu JJ. Association of Renalase SNPs rs2296545 and rs2576178 with the Risk of Hypertension: A Meta-Analysis. PLoS One 2016; 11:e0158880. [PMID: 27434211 PMCID: PMC4951046 DOI: 10.1371/journal.pone.0158880] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 06/23/2016] [Indexed: 01/11/2023] Open
Abstract
Background/Aims Two renalase single nucleotide polymorphisms (SNPs) rs2296545 and rs2576178 have been reported to be associated with the susceptibility to hypertension (HT). Given the inconsistent results, we conducted a meta-analysis to assess the association between these two SNPs and the risk of HT. Methods Electronic databases were systematically searched to find relevant studies. Subgroup analysis was conducted according to the different concomitant diseases and ethnicities in the study population. Pooled odds ratios (OR) and 95% confidence intervals (CI) were calculated using fixed-effect or random-effect models. Results A total of six case–control studies on rs2296545 and six studies on rs2576178 were included. In the combined analysis, results showed a significant association between SNP rs2296545 and risk of HT in all genetic models (dominant model CG+CC/GG: OR = 1.43, 95% CI = 1.24–1.65; recessive model CC/CG+GG: OR = 1.36, 95% CI = 1.09–1.69; codominant model CC/GG: OR = 1.63, 95% CI = 1.20–2.20, CG/GG: OR = 1.30, 95% CI = 1.12–1.52; allelic model C/G: OR = 1.29, 95% CI = 1.10–1.51). In subgroup analysis, we observed a significant association between rs2296545 and risk of essential HT. Although we did not observe an association between rs2576178 polymorphism and HT in the combined analysis, an increased risk was observed in the essential HT patients versus healthy controls (subgroup 1) analysis under the dominant, recessive, and codominant genetic models. Conclusions Renalase gene rs2296545 polymorphism is significantly associated with increased risk of HT, whereas rs2576178 polymorphism may not be associated with the susceptibility to HT.
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Affiliation(s)
- Yong-Bo Lv
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Yang Wang
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Wang-Ge Ma
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Ding-Yi Yan
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Wen-Ling Zheng
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Chao Chu
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Tong-Shuai Guo
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Zu-Yi Yuan
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
| | - Jian-Jun Mu
- Department of Cardiology, First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Molecular Cardiology of Shaanxi Province, Xi’an, China
- * E-mail:
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Wang Y, Xie BQ, Gao WH, Yan DY, Zheng WL, Lv YB, Cao YM, Hu JW, Yuan ZY, Mu JJ. Effects of Renin-Angiotensin System Inhibitors on Renal Expression of Renalase in Sprague-Dawley Rats Fed With High Salt Diet. Kidney Blood Press Res 2015; 40:605-13. [DOI: 10.1159/000368536] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2015] [Indexed: 11/19/2022] Open
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Cheng FC, Yang LL, Yan DY, Tsai TH, Lee CW, Chen SH. Monitoring of extracellular pyruvate, lactate, and ascorbic acid during cerebral ischemia: a microdialysis study in awake gerbils. J Chromatogr A 2000; 870:389-94. [PMID: 10722094 DOI: 10.1016/s0021-9673(99)00905-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In vivo microdialysis coupled with liquid chromatography was developed for the continuous monitoring of brain neurochemicals during cerebral ischemia in awake, free moving gerbils. The dead volume of the microdialysis system was estimated to be less than 30 microl. The detection limits of the present assay were 0.2 to 2.0 microM for analytes at a signal to noise ratio of five. To validate this assay, a focal cerebral ischemia was produced by occlusion of one common carotid artery for 60 min and then reperfusion for additional 3 h in awake gerbils. A microdialysis probe was inserted into the striatum of the gerbil. Dialysates were autoinjected and analyzed extracellular pyruvate, lactate, and ascorbic acid by liquid chromatography with a UV detector during cerebral ischemia. Significant changes of pyruvate and the lactate/pyruvate ratio were observed. Biphasic and dynamic changes in ascorbic acid and lactate were proposed to correlate a secondary damage. This assay can be used as a tool to study dynamic changes of brain neurochemicals in awake animals.
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Affiliation(s)
- F C Cheng
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
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Jin SG, Lu BY, Yan DY, Fu ZY, Jiang Y, Li W. An evaluation on smoking-induced health costs in China (1988-1989). Biomed Environ Sci 1995; 8:342-349. [PMID: 8719176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A study on smoking-attributable health economic costs in China was conducted from 1988-1992, in which three major categories of chronic diseases, diseases of cancer, diseases of circulatory system, and diseases of respiratory system were included. A prevalence-based method which estimated the cumulative effect of cigarette smoking during the past 20-30 years was used. The results show that in 1989, the total smoking-attributable economic costs to health sectors in China were about 27.1 billion of Chinese Yuan, including about 7 billion Yuan in direct medical costs and 20 billion Yuan in indirect costs, which include indirect morbidity costs and indirect mortality costs. The relatively low direct costs reflected the low medical costs at hospitals in China at that time. And the high proportion of indirect costs relative to the total costs shows the high potential years of life lost due to cigarette smoking. The results also show the heavier health burden in urban areas than in rural areas, reflecting the worse situation in urban China at nowadays. But if considering that almost 80% of the Chinese are rural farmers with the higher smoking prevalence and relatively shorter history of manufactured cigarette smoking than their urban counterparts, the very frightful situation due to cigarette smoking would be for China in the next century.
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Affiliation(s)
- S G Jin
- Chinese Academy of Preventive Medicine, Beijing, China
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Yan DY, Xie YJ, Zhang CA, McCormick JB, Sanchez A, Engelman HM, Chen SZ, Gu XS, Tang WT, Zhang J. New isolates of HFRS virus in Sichuan, China and characterisation of antigenic differences by monoclonal antibodies. Lancet 1986; 1:1328. [PMID: 2423827 DOI: 10.1016/s0140-6736(86)91248-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Shi ZR, Zhu PC, Yan DY. [The etiology of chronic diarrhea--an analysis of 433 cases]. Zhonghua Nei Ke Za Zhi 1986; 25:165-7, 191. [PMID: 3091330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Gu XS, Wang DQ, Yang SH, Yan DY. Activation of the alternative complement pathway in patients with epidemic hemorrhagic fever. Chin Med J (Engl) 1984; 97:283-90. [PMID: 6148201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Yang SH, Gu XS, Wang DQ, Yan DY. Studies on immunopathogenesis in epidemic hemorrhagic fever: role of classical complement pathway activation in pathogenesis. Chin Med J (Engl) 1981; 94:789-98. [PMID: 6120798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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