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Wang X, Xia Y, Zhang Y, Ji Q, Yan G, Huang B, He M, Yang Y, Zhong M, He H, Yang P, Liu X, Wu Q, Sabel CE, Lei P, Jin Z. Evidence of economic development revealed in centennial scale sedimentary records of organic pollutants in Huguangyan Marr Lake. Sci Total Environ 2024; 927:172044. [PMID: 38554953 DOI: 10.1016/j.scitotenv.2024.172044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 03/09/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Sedimentary records of polycyclic aromatic hydrocarbons (PAHs) and phthalates could reflect energy consumption and industrial production adjustment. However, there is limited knowledge about their effects on variations of PAH and phthalate compositions in the sediment core. The PAH and phthalate sedimentary records in Huguangyan Maar Lake in Guangdong, China were constructed, and random forest models were adopted to quantify the associated impact factors. Sums of sixteen PAH (∑16 PAH) and seven phthalate (∑7 PAE) concentrations in the sediment ranged from 28.8 to 1110 and 246-4290 μg/kg dry weight in 1900-2020. Proportions of 5-6 ring PAHs to the ∑16 PAHs increased from 32.0 %-40.7 % in 1900-2020 with increased coal and petroleum consumption, especially after 1980. However, those of 2-3 ring PAHs decreased from 30.7 % to 23.6 % due to the biomass substitution with natural gas. The proportions of bis (2-ethylhexyl) phthalate to the ∑7 PAEs decreased from 52.3 %-29.1 % in 1900-2020, while those of di-isobutyl phthalate increased (13.7 % to 42.3 %). The shift from traditional plasticizers to non-phthalates drove this transformation, though the primary plastic production is increasing. Our findings underscore the effectiveness of optimizing energy structures and updating chemical products in reducing organic pollution in aquatic environments.
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Affiliation(s)
- Xinkai Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yubao Xia
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Yanxia Zhang
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Aarhus Institute of Advanced Studies, Aarhus University, 8000 Aarhus, Denmark; BERTHA - Big Data Centre for Environment and Health, Department of Public Health, Aarhus University, 8000 Aarhus, Denmark.
| | - Qingsong Ji
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Guojing Yan
- State Key Laboratory of Soil & Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Biao Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Maoyong He
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Ming Zhong
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Huan He
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Pengfei Yang
- Key Laboratory of Soil Resource & Biotech Applications, Shaanxi Academy of Sciences, Xi'an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province), Xi'an 710061, China
| | - Xiaofei Liu
- Key Laboratory of Soil Resource & Biotech Applications, Shaanxi Academy of Sciences, Xi'an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province), Xi'an 710061, China
| | - Qiumei Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Clive E Sabel
- BERTHA - Big Data Centre for Environment and Health, Department of Public Health, Aarhus University, 8000 Aarhus, Denmark; Department of Public Health, Aarhus University, 8000 Aarhus, Denmark; School of Geography, Earth and Environmental Sciences, University of Plymouth, UK
| | - Pei Lei
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
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Ao H, Liebrand D, Dekkers MJ, Roberts AP, Jonell TN, Jin Z, Song Y, Liu Q, Sun Q, Li X, Huang C, Qiang X, Zhang P. Orbital- and millennial-scale Asian winter monsoon variability across the Pliocene-Pleistocene glacial intensification. Nat Commun 2024; 15:3364. [PMID: 38641605 PMCID: PMC11031568 DOI: 10.1038/s41467-024-47274-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 03/22/2024] [Indexed: 04/21/2024] Open
Abstract
Intensification of northern hemisphere glaciation (iNHG), ~2.7 million years ago (Ma), led to establishment of the Pleistocene to present-day bipolar icehouse state. Here we document evolution of orbital- and millennial-scale Asian winter monsoon (AWM) variability across the iNHG using a palaeomagnetically dated centennial-resolution grain size record between 3.6 and 1.9 Ma from a previously undescribed loess-palaeosol/red clay section on the central Chinese Loess Plateau. We find that the late Pliocene-early Pleistocene AWM was characterized by combined 41-kyr and ~100-kyr cycles, in response to ice volume and atmospheric CO2 forcing. Northern hemisphere ice sheet expansion, which was accompanied by an atmospheric CO2 concentration decline, substantially increased glacial AWM intensity and its orbitally oscillating amplitudes across the iNHG. Superposed on orbital variability, we find that millennial AWM intensity fluctuations persisted during both the warmer (higher-CO2) late Pliocene and colder (lower-CO2) early Pleistocene, in response to both external astronomical forcing and internal climate dynamics.
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Affiliation(s)
- Hong Ao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.
- Laoshan Laboratory, Qingdao, China.
| | - Diederik Liebrand
- Department of Earth and Environmental Sciences, University of Manchester, Manchester, UK
| | - Mark J Dekkers
- Paleomagnetic Laboratory 'Fort Hoofddijk', Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Andrew P Roberts
- Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
| | - Tara N Jonell
- School of Geographical and Earth Sciences, University of Glasgow, Glasgow, UK
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Laoshan Laboratory, Qingdao, China
| | - Yougui Song
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Qingsong Liu
- Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Qiang Sun
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, China
| | - Xinxia Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- School of Earth Sciences, China University of Geosciences (Wuhan), Wuhan, China
| | - Chunju Huang
- School of Earth Sciences, China University of Geosciences (Wuhan), Wuhan, China
| | - Xiaoke Qiang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Peng Zhang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Laoshan Laboratory, Qingdao, China
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3
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Xie D, Zhao B, Kang R, Ma X, Larssen T, Jin Z, Duan L. Delayed recovery of surface water chemistry from acidification in subtropical forest region of China. Sci Total Environ 2024; 912:169126. [PMID: 38070570 DOI: 10.1016/j.scitotenv.2023.169126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/20/2023] [Accepted: 12/03/2023] [Indexed: 01/18/2024]
Abstract
The three largest acid rain regions of current earth are located in northern and western Europe, eastern North America, and East Asia. Sulfur and nitrate concentrations in headwater streams in Europe and North America decreased as atmospheric sulfur and nitrogen deposition decreased, albeit with a considerable delay. However, how water chemistry responds to the declining sulfur and nitrogen deposition in China is unclear. The regional survey of surface water chemistry during 2010 and 2018 within the Sichuan Basin in southwestern China showed that the recovery of the surface water chemistry was delayed for at least 5 years owing to the release of previously deposited sulfur and nitrogen stored in the soil. After sulfur deposition declined from its peak value, the subregions of purplish soil with low sulfate adsorption capacity still exhibited a net sulfur release in 2010, but this release was no longer evident by 2018. The subregions with the red and yellow soils, which have a high sulfate adsorption capacity, operated as sulfur sinks during 2010 and 2018, indicating a continuous immobilization process through sulfate reduction despite a decrease in sulfur deposition. Additionally, this sulfate reduction countered the release of sulfate caused by sulfur desorption. There was a substantial nitrogen sink within the Sichuan Basin. Nitrogen leaching decreased slowly with the declined nitrogen deposition, except in regions where nitrogen deposition exceeded the critical threshold. Compared to temperate forest regions in Europe, the Sichuan Basin and its surrounding areas have experienced higher decline rates in the leaching of sulfur and nitrogen, highlighting that the subtropical forest region undergoes a faster restoration of surface water chemistry.
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Affiliation(s)
- Danni Xie
- School of Land Engineering, Chang'an University, Xi'an 710064, China; SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Bin Zhao
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China
| | - Ronghua Kang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Xiaoxiao Ma
- State Grid Xinyuan Company Ltd., Beijing 100052, China
| | - Thorjørn Larssen
- Norwegian Institute for Water Research, Økernveien 94, Oslo 0579, Norway
| | - Zhangdong Jin
- School of Land Engineering, Chang'an University, Xi'an 710064, China; SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
| | - Lei Duan
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China.
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Yan J, Guo X, He M, Niu Z, Xu M, Peng B, Yang Y, Jin Z. Metals and microorganisms in a Maar lake sediment core indicating the anthropogenic impact over last 800 years. Sci Total Environ 2024; 911:168392. [PMID: 37956839 DOI: 10.1016/j.scitotenv.2023.168392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/31/2023] [Accepted: 11/05/2023] [Indexed: 11/15/2023]
Abstract
A closed Maar lake, receiving mostly atmospheric deposition, offers a unique setting for investigating the impact of human activities on the environment. In this study, we aimed to investigate the historical record of metals in core sediments of Maar Lake in Huguangyan (HGY), Southeast China, and elucidate the possible microbial responses to anthropogenic metal stress. Five stages were divided according to the historical record of metals and corresponding distribution of microbial community, among which Pb and Sn showed a peak value around 1760 CE, indicating the ancient mining and smelting activities. Since the 1980s, a substantial enrichment of metals such as Zn, As, Mo, Cd, Sn, Sb, and Pb was observed, due to the rapid industrial growth in China. In terms of microorganisms, Chloroflexi phylum, particularly dominated by Anaerolineales, showed significant correlations with Pb and Sn, and could potentially serve as indicator species for mining and smelting-related contamination. Desulfarculales and Desulfobacterales were found to be more prevalent in recent period and exhibited positive correlations with anthropogenic metals. Moreover, according to the multivariate regression modeling and variance decomposition analysis, Pb and Sn could regulate Anaerolineales and further pose impact on the carbon cycle; while sulfate-reducing bacteria (SRB) could response to anthropogenic metals and influence sulfur cycle. These findings provide new insights into the interaction between metals and microbial communities over human history.
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Affiliation(s)
- Jia Yan
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Xingpan Guo
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Maoyong He
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Zuoshun Niu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Miao Xu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Bo Peng
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China; State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
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Cao Y, Wang M, Zhang F, Hu Y, Yang L, Wang Y, Wu D, Jin Z. Chemical weathering in glacial catchment acting as a net carbon source. Sci Total Environ 2023; 901:165842. [PMID: 37516170 DOI: 10.1016/j.scitotenv.2023.165842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 07/31/2023]
Abstract
Over geological time scales, continental silicate weathering is considered as a critical carbon sink that regulates long-term climate feedback. By contrast, recent studies indicate that sulfide oxidation during weathering can be as a potential carbon source. However, whether chemical weathering in glacial conditions characterized by extreme erosion is a net carbon sink or source remains elusive. Here, we present the seasonal carbon cycle processes in a typical glacier catchment, via high-resolution (weekly) river water sampling during the whole 2017 in the Laohugou river, northeastern Tibetan Plateau. Our seasonal result shows that the release of CO2 by sulfide oxidation during the monsoon period can be much faster than CO2 consumption through weathering of silicate rocks, with maximum of ∼26 times. Extending to global glacial basins, we observed a consistent pattern that inorganic carbon releases in alpine glaciers are faster than atmospheric CO2 consumption. We propose that weathering in global glacial environment acts as a significant carbon source, and thus affects climate feedback.
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Affiliation(s)
- Yang Cao
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; College of Resources and environment, Hubei University, Hubei 430062, China
| | - Min Wang
- College of Resources and environment, Hubei University, Hubei 430062, China
| | - Fei Zhang
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; Laoshan Laboratory, Qingdao 266237, China.
| | - Yadan Hu
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Liu Yang
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yongtao Wang
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Di Wu
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Zhangdong Jin
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
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Jiang Y, Qian Y, Hong H, Gao X, Liu W, Jin Q, Chen M, Jin Z, Liu Q, Wei Z. Morin protects chicks with T-2 toxin poisoning by decreasing heterophil extracellular traps, oxidative stress and inflammatory response. Br Poult Sci 2023; 64:614-624. [PMID: 37334824 DOI: 10.1080/00071668.2023.2226083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/16/2023] [Indexed: 06/21/2023]
Abstract
1. Fusarium tritici widely exists in a variety of grain feeds. The T-2 toxin is the main hazardous component produced by Fusarium tritici, making a serious hazard to poultry industry. Morin, belonging to the flavonoid family, can be extracted from mulberry plants and possesses anticancer, antioxidant and anti-inflammatory compounds, but whether morin protects chicks with T-2 toxin poisoning remains unclear. This experiment firstly established a chick model of T-2 toxin poisoning and then investigated the protective effects and mechanism of morin against T-2 toxin in chicks.2. The function of liver and kidney was measured by corresponding alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), blood urea nitrogen (BUN), creatinine (Cre) and uric acid (UA) kits. Histopathological changes were observed by haematoxylin-eosin staining. The status of oxidative stress was measured by MDA, SOD, CAT, GSH and GSH-PX kits. The mRNA levels of TNF-α, COX-2, IL-1β, IL-6, caspase-1, caspase-3 and caspase-11 were measured by quantitative real-time PCR. Heterophil extracellular trap (HET) release was analysed by immunofluorescence and fluorescence microplate.3. The model with T-2 toxin poisoning in chicks was successfully established. Morin significantly decreased T-2 toxin-induced ALT, AST, ALP, BUN, Cre and UA, and improved T-2 toxin-induced liver cell rupture, liver cord disorder and kidney interstitial oedema. Oxidative stress analysis showed that morin ameliorated T-2 toxin-induced damage by reducing malondialdehyde (MDA), increasing superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and glutathione peroxidase (GSH-PX). The qRT-PCR analysis showed that morin reduced T-2 toxin-induced mRNA expressions of TNF-α, COX-2, IL-1β, IL-6, caspase-1, caspase-3 and caspase-11. Moreover, morin significantly reduced the release of T-2 toxin-induced HET in vitro and in vivo.4. Morin can protect chicks from T-2 toxin poisoning by decreasing HETs, oxidative stress and inflammatory responses, which make it a useful compound against T-2 toxin poisoning in poultry feed.
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Affiliation(s)
- Y Jiang
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - Y Qian
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - H Hong
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - X Gao
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - W Liu
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - Q Jin
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - M Chen
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - Z Jin
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - Q Liu
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
| | - Z Wei
- College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, People's Republic of China
- College of Veterinary Medicine, Southwest University, Chongqing, China
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Wan D, Yang H, Jin Z, Song L, Ning D, Cheng L, Jiang Q. Two-century sediment records of atmospheric mercury variations in North China and their relations with regional and global emissions. Environ Sci Pollut Res Int 2023; 30:83834-83844. [PMID: 37349493 DOI: 10.1007/s11356-023-28094-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 05/31/2023] [Indexed: 06/24/2023]
Abstract
Sedimentary mercury (Hg) records from remote areas are significant for revealing historical variations of regional Hg and understanding the influence of regional and global Hg emissions. In this study, sediment cores were retrieved from two subalpine lakes in Shanxi Province in North China and employed to reconstruct atmospheric Hg variations over the last two centuries. The two records show similar anthropogenic Hg fluxes and evolution trends, corresponding with that they were affected mainly by regional atmospheric Hg deposition. Before ~1950, the records show negligible Hg pollution signals. Atmospheric Hg in the region had increased rapidly since the 1950s, lagged more than a half-century compared to the global Hg. This indicates that they were seldom affected by Hg emissions dominated by Europe and North America after the industrial revolution. The Hg increases since the 1950s in the two records corresponded well with rapid industrial developments in and around Shanxi Province after the founding of the China, implying the dominant contribution of domestic Hg emissions. By comparing other Hg records, we find that widespread increases in atmospheric Hg in China likely occurred post ~1950. This study rouses to re-examine historical variations in atmospheric Hg at various settings, which is significant to understanding global Hg cycling in the industrial era.
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Affiliation(s)
- Dejun Wan
- School of Geographical Science, Nantong University, Nantong, 226007, China.
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China.
| | - Handong Yang
- Environmental Change Research Centre, University College London, London, WC1E 6BT, UK
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710075, China
| | - Lei Song
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China
| | - Dongliang Ning
- School of Geographical Science, Nantong University, Nantong, 226007, China
| | - Longjuan Cheng
- School of Geographical Science, Nantong University, Nantong, 226007, China
| | - Qingfeng Jiang
- School of Geographical Science, Nantong University, Nantong, 226007, China
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8
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Gou LF, Xu Y, Tong F, Jin Z. Li isotopic seasonality in a small catchment at the northeastern Tibetan Plateau: Roles of hydrology and temperature dependency. Sci Total Environ 2023; 870:161896. [PMID: 36709901 DOI: 10.1016/j.scitotenv.2023.161896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/18/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Silicate weathering is critical to sustain our habitable planet. Lithium (Li) isotopes enable us to investigate the nature of silicate weathering. A number of riverine Li isotope (δ7Lirw) investigations have been made from polar to equatorial terrains, but there remains no consensus about the controlling mechanisms of both weathering and δ7Lirw. Here we investigated δ7Lirw response to climate by collecting weekly river water samples in a small catchment (the Buha River within the Lake Qinghai basin) on the northeastern Tibetan Plateau, with stable tectonic, lithology, and topography. In the hydrology year of 2007 of the Buha River, we find that during the dry seasons, δ7Lirw ratios show temperature dependency typically, when the groundwater fed the river. During the monsoon seasons, δ7Lirw were obviously lower than the temperature dependency predicted values, when abundant rock dissolved and thereby fresh Li release into rivers. We propose that the hydrology and temperature dependency together play important roles in regulating δ7Lirw ratios in such an alpine small catchment. The mechanism is that long residence time facilitates the equilibrium chemical and Li isotopic fractionation during the dry seasons, so a temperature dependency of δ7Lirw is achieved. In contrast, rapid erosion and weathering contribution of fresh rock-like δ7Li to river water would significantly decrease δ7Lirw ratios during the monsoon seasons. This hypothesis can better interpret previously reported data of seasonal δ7Lirw variation, as a superposition between temperature dependency and hydrology regulation on silicates weathering in the small catchments besides tectonics.
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Affiliation(s)
- Long-Fei Gou
- Department of Geography, Chang'an University, Xi'an 710054, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yang Xu
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Fengtai Tong
- International Centre for Isotope Effects Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; Department of Geography, Chang'an University, Xi'an 710054, China.
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Fineman S, Wang W, Jin Z, Liu Y. HOURLY VARIATION OF POLLEN COUNTS. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Jin Z, Jia BX, Tan LD, Chen QM, Liu YH. Retraction Note: Combination therapy with metformin and IL-12 to inhibit the growth of hepatic carcinoma by promoting apoptosis and autophagy in HepG2-bearing mice. Eur Rev Med Pharmacol Sci 2022; 26:6892. [PMID: 36263565 DOI: 10.26355/eurrev_202210_29864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The article "Combination therapy with metformin and IL-12 to inhibit the growth of hepatic carcinoma by promoting apoptosis and autophagy in HepG2-bearing mice, by Z. Jin, B.-X. Jia, L.-D. Tan, Q.-M. Chen, Y.-H. Liu, published in Eur Rev Med Pharmacol Sci 2020; 24 (23): 12368-12379-DOI: 10.26355/eurrev_202012_24031-PMID: 33336757" has been retracted by the authors as they cannot ensure the reliability of the manuscript due to inaccuracies in the conclusions and in the experiment (the cell migration and invasion assay along with the cell cycle arrest assay are missing). The Publisher apologizes for any inconvenience this may cause https://www.europeanreview.org/article/24031.
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Affiliation(s)
- Z Jin
- Department of Hepatobiliary and Pancreatic Surgery, the First Hospital of Jilin University, Changchun, Jilin, China
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Wan D, Yang H, Song L, Jin Z, Mao X, Yang J. Sediment records of global and regional Hg emissions to the atmosphere in North China over the last three centuries. Environ Pollut 2022; 310:119831. [PMID: 35931386 DOI: 10.1016/j.envpol.2022.119831] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Reconstructing the long-term Hg history in major emission countries is important for understanding the global Hg cycle and controlling Hg pollution. In this study, the atmospheric Hg history was reconstructed over the last three centuries based on three lacustrine sediment records from southeastern Inner Mongolia in North China, and its relationship with global and regional Hg emissions was revealed. These records show little Hg pollution in the 18th and 19th centuries. This implies a limited influence of Hg emitted from Europe and North America in this region, which is confirmed by their different Hg trends during the two World Wars and the post-1970s. Atmospheric Hg in the region had increased gradually since the 1900s, primarily contributed by emissions from the former Soviet Union in Lake Dalihu (DLH) and Lake Zhagesitai (ZGST) and from the Beijing-Tianjin-Hebei region in Lake Kulunnao (KLN). In the last century, two decreases in Hg fluxes occurred in the KLN core due to the economic recession in the 1960s-1970s and reduced energy consumption and industrial production in the 1990s. In the DLH and ZGST cores, only one decrease occurred, corresponded with the dissolution of the Soviet Union in the 1990s. Although atmospheric Hg emissions in China had stabilized or even decreased in the last decade, atmospheric Hg continued to increase, particularly in KLN, because of emissions from small cities in the region. This study can help understand Hg sources and control Hg pollution in North China and supplement the understanding of the global Hg cycling.
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Affiliation(s)
- Dejun Wan
- School of Geographical Science, Nantong University, Nantong, 226007, China; Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China.
| | - Handong Yang
- Environmental Change Research Centre, University College London, London, WC1E 6BT, UK
| | - Lei Song
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710075, China
| | - Xin Mao
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China
| | - Jinsong Yang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China
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12
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Zhang F, Dellinger M, Hilton RG, Yu J, Allen MB, Densmore AL, Sun H, Jin Z. Hydrological control of river and seawater lithium isotopes. Nat Commun 2022; 13:3359. [PMID: 35688840 PMCID: PMC9187753 DOI: 10.1038/s41467-022-31076-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 06/01/2022] [Indexed: 11/30/2022] Open
Abstract
Seawater lithium isotopes (δ7Li) record changes over Earth history, including a ∼9‰ increase during the Cenozoic interpreted as reflecting either a change in continental silicate weathering rate or weathering feedback strength, associated with tectonic uplift. However, mechanisms controlling the dissolved δ7Li remain debated. Here we report time-series δ7Li measurements from Tibetan and Pamir rivers, and combine them with published seasonal data, covering small (<102 km2) to large rivers (>106 km2). We find seasonal changes in δ7Li across all latitudes: dry seasons consistently have higher δ7Li than wet seasons, by −0.3‰ to 16.4‰ (mean 5.0 ± 2.5‰). A globally negative correlation between δ7Li and annual runoff reflects the hydrological intensity operating in catchments, regulating water residence time and δ7Li values. This hydrological control on δ7Li is consistent across climate events back to ~445 Ma. We propose that hydrological changes result in shifts in river δ7Li and urge reconsideration of its use to examine past weathering intensity and flux, opening a new window to reconstruct hydrological conditions. From modern seasonal to the deep time, global data show that continental hydrology has a direct and consistent effect on river and marine Li isotope compositions, highlighting a crucial role of climate on Earth’s weathering and the carbon cycle.
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Affiliation(s)
- Fei Zhang
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China. .,Department of Geography, Durham University, Durham, DH1 3LE, UK.
| | - Mathieu Dellinger
- Department of Geography, Durham University, Durham, DH1 3LE, UK.,EDYTEM-CNRS-University Savoie Mont Blanc (USMB), Chambéry, 73000, France
| | - Robert G Hilton
- Department of Geography, Durham University, Durham, DH1 3LE, UK.,Department of Earth Sciences, University of Oxford, Oxford, OX1 3AN, UK
| | - Jimin Yu
- Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China.,Research School of Earth Sciences, The Australian National University, Canberra, ACT 2601, Australia
| | - Mark B Allen
- Department of Earth Sciences, Durham University, Durham, DH1 3LE, UK
| | | | - Hui Sun
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
| | - Zhangdong Jin
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China. .,Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China. .,Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China.
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13
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Chen J, Zhong B, Jin Z, Zhu H, Teng G. Abstract No. 174 Predictive value of platelet-to-lymphocyte ratio and systemic immune-inflammation in HCC patients receiving TACE plus PD-1/PD-L1 inhibitors and molecular targeted agents: a study based on multicenter cohort. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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14
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Wang X, Xue H, Chang X, Jin Z. Gastrointestinal: Epithelioid angiomyolipoma of the pancreas. J Gastroenterol Hepatol 2022; 37:781. [PMID: 34978112 DOI: 10.1111/jgh.15739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/16/2021] [Indexed: 12/09/2022]
Affiliation(s)
- X Wang
- Department of Radiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - H Xue
- Department of Radiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - X Chang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Z Jin
- Department of Radiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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15
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Xiao J, Lv G, Chai N, Hu J, Jin Z. Hydrochemistry and source apportionment of boron, sulfate, and nitrate in the Fen River, a typical loess covered area in the eastern Chinese Loess Plateau. Environ Res 2022; 206:112570. [PMID: 34922980 DOI: 10.1016/j.envres.2021.112570] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/05/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Fen River Basin (FRB) is water-deficient and strongly influenced by human activities in the eastern Chinese Loess Plateau. The spatio-temporal variation and controlling factors of hyrochemistry and quality, sources of high boron, sulfate, and nitrate of surface waters in FRB were unclear. Major ions, δ11B, δ15N, and δ18O in surface waters in dry season and wet season of FRB were analyzed and correlation analysis (CA), principal component analysis (PCA), self-organizing map (SOM), forward model, and Bayesian isotope mixing model (MixSIAR) were used to solve above problems. Results showed that average riverine δ11B, δ15N, and δ18O of FRB was 7.8‰, 11.2‰, and 1.3‰ (1SD), respectively. Dissolved solutes ranked midstream > downstream > upstream with water type of Na +-Cl-, Ca2+-Mg2+-Cl-, and Ca2+-HCO3-, respectively. Low dissolved solutes were in forest areas while high values were in cropland and city areas. SOM analysis indicated that hydrochemistry was both influenced by natural (upstream) and pollutional input (midstream and downstream) and variation between dry season and wet season was minor. The abnormally high boron concentrations were mainly from silicate weathering (43%) and evaporites dissolution of loess (32%), urban and industrial input contributed 15% of riverine boron. High SO42- (207 ± 267 mg/L, 1SD) was mainly from sulfates. δ15N and δ18O analysis indicated that nitrification was the primary N cycling process. Further, MixSIAR showed that NO3- was mainly from municipal sewage (∼67%) and the total contribution of chemical fertilizer and soil nitrogen was ∼30% with slightly higher values in upstream and wet season. Influenced by land-use types, evaporite dissolution, and anthropogenic input, water quality below midstream was worse and strict sewage reduction policies must be developed. This study highlights the significant influence of evaporite dissolution of loess and anthropogenic input (urban and industrial input for B and sewage for NO3-) on hydrochemistry and water quality.
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Affiliation(s)
- Jun Xiao
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi'an, 710061, China; Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, No. 97 Yanxiang Road, Yanta Zone, Xi'an, 710061, Shaanxi, China.
| | - Guorui Lv
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi'an, 710061, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ningpan Chai
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi'an, 710061, China
| | - Jing Hu
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi'an, 710061, China
| | - Zhangdong Jin
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi'an, 710061, China; Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, No. 97 Yanxiang Road, Yanta Zone, Xi'an, 710061, Shaanxi, China
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16
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Li J, Yang H, Tong L, Liu Z, Jin Z, Chen G. Effects of Mineral Salts on the Activity and Composition of a Mixed Culture of Acidophilic Microorganisms. Microbiology (Reading) 2021. [DOI: 10.1134/s0026261722010088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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17
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Ao H, Rohling EJ, Zhang R, Roberts AP, Holbourn AE, Ladant JB, Dupont-Nivet G, Kuhnt W, Zhang P, Wu F, Dekkers MJ, Liu Q, Liu Z, Xu Y, Poulsen CJ, Licht A, Sun Q, Chiang JCH, Liu X, Wu G, Ma C, Zhou W, Jin Z, Li X, Li X, Peng X, Qiang X, An Z. Global warming-induced Asian hydrological climate transition across the Miocene-Pliocene boundary. Nat Commun 2021; 12:6935. [PMID: 34836960 PMCID: PMC8626456 DOI: 10.1038/s41467-021-27054-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 11/02/2021] [Indexed: 12/02/2022] Open
Abstract
Across the Miocene-Pliocene boundary (MPB; 5.3 million years ago, Ma), late Miocene cooling gave way to the early-to-middle Pliocene Warm Period. This transition, across which atmospheric CO2 concentrations increased to levels similar to present, holds potential for deciphering regional climate responses in Asia-currently home to more than half of the world's population- to global climate change. Here we find that CO2-induced MPB warming both increased summer monsoon moisture transport over East Asia, and enhanced aridification over large parts of Central Asia by increasing evaporation, based on integration of our ~1-2-thousand-year (kyr) resolution summer monsoon records from the Chinese Loess Plateau aeolian red clay with existing terrestrial records, land-sea correlations, and climate model simulations. Our results offer palaeoclimate-based support for 'wet-gets-wetter and dry-gets-drier' projections of future regional hydroclimate responses to sustained anthropogenic forcing. Moreover, our high-resolution monsoon records reveal a dynamic response to eccentricity modulation of solar insolation, with predominant 405-kyr and ~100-kyr periodicities between 8.1 and 3.4 Ma.
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Affiliation(s)
- Hong Ao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China.
| | - Eelco J Rohling
- Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, UK
| | - Ran Zhang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China.
| | - Andrew P Roberts
- Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
| | - Ann E Holbourn
- Institute of Geosciences, Christian-Albrechts-University, Kiel, Germany
| | - Jean-Baptiste Ladant
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
| | - Guillaume Dupont-Nivet
- Géosciences Rennes, UMR-CNRS 6118, University Rennes, Rennes, France
- Department of Geosciences, Potsdam University, Potsdam, Germany
| | - Wolfgang Kuhnt
- Institute of Geosciences, Christian-Albrechts-University, Kiel, Germany
| | - Peng Zhang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Feng Wu
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Mark J Dekkers
- Paleomagnetic Laboratory 'Fort Hoofddijk', Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Qingsong Liu
- Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Zhonghui Liu
- Department of Earth Sciences, University of Hong Kong, Hong Kong, China
| | - Yong Xu
- Xi'an Center of Geological Survey, China Geological Survey, Xi'an, China
| | - Christopher J Poulsen
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Alexis Licht
- Department of Earth and Space Sciences, University of Washington, Seattle, WA, USA
| | - Qiang Sun
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, China
| | - John C H Chiang
- Department of Geography, University of California, Berkeley, CA, USA
| | - Xiaodong Liu
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Guoxiong Wu
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - Chao Ma
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu Universityof Technology, Chengdu, China
| | - Weijian Zhou
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Xinxia Li
- School of Earth Sciences, China University of Geosciences (Wuhan), Wuhan, China
| | - Xinzhou Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Xianzhe Peng
- School of Information Management, Nanjing University, Nanjing, China
| | - Xiaoke Qiang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Zhisheng An
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
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Ding K, Liu Y, Du J, Zhu Y, Xu D, Li J, Liao X, He J, Wang J, Liu Z, Sun L, Xiao Q, Wang J, Cao H, Cai Y, Cai C, Jin Z, Yuan Y. 420P A single-arm, multicenter, phase II study of anlotinib combined with CAPEOX as first-line treatment in RAS/BRAF wild-type unresectable metastatic colorectal cancer (ALTER-C002). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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19
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Cohen R, Shi Q, Meyers J, Jin Z, Svrcek M, Fuchs C, Couture F, Kuebler P, Ciombor KK, Bendell J, De Jesus-Acosta A, Kumar P, Lewis D, Tan B, Bertagnolli MM, Philip P, Blanke C, O'Reilly EM, Shields A, Meyerhardt JA. Combining tumor deposits with the number of lymph node metastases to improve the prognostic accuracy in stage III colon cancer: a post hoc analysis of the CALGB/SWOG 80702 phase III study (Alliance) ☆. Ann Oncol 2021; 32:1267-1275. [PMID: 34293461 DOI: 10.1016/j.annonc.2021.07.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND In colon cancer, tumor deposits (TD) are considered in assigning prognosis and staging only in the absence of lymph node metastasis (i.e. stage III pN1c tumors). We aimed to evaluate the prognostic value of the presence and the number of TD in patients with stage III, node-positive colon cancer. PATIENTS AND METHODS All participants from the CALGB/SWOG 80702 phase III trial were included in this post hoc analysis. Pathology reports were reviewed for the presence and the number of TD, lymphovascular and perineural invasion. Associations with disease-free survival (DFS) and overall survival (OS) were evaluated by multivariable Cox models adjusting for sex, treatment arm, T-stage, N-stage, lymphovascular invasion, perineural invasion and lymph node ratio. RESULTS Overall, 2028 patients were included with 524 (26%) TD-positive and 1504 (74%) TD-negative tumors. Of the TD-positive patients, 80 (15.4%) were node negative (i.e. pN1c), 239 (46.1%) were pN1a/b (<4 positive lymph nodes) and 200 (38.5%) were pN2 (≥4 positive lymph nodes). The presence of TD was associated with poorer DFS [adjusted hazard ratio (aHR) = 1.63, 95% CI 1.33-1.98] and OS (aHR = 1.59, 95% CI 1.24-2.04). The negative effect of TD was observed for both pN1a/b and pN2 groups. Among TD-positive patients, the number of TD had a linear negative effect on DFS and OS. Combining TD and the number of lymph node metastases, 104 of 1470 (7.1%) pN1 patients were re-staged as pN2, with worse outcomes than patients confirmed as pN1 (3-year DFS rate: 65.4% versus 80.5%, P = 0.0003; 5-year OS rate: 87.9% versus 69.1%, P = <0.0001). DFS was not different between patients re-staged as pN2 and those initially staged as pN2 (3-year DFS rate: 65.4% versus 62.3%, P = 0.4895). CONCLUSION Combining the number of TD and the number of lymph node metastases improved the prognostication accuracy of tumor-node-metastasis (TNM) staging.
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Affiliation(s)
- R Cohen
- Department of Health Science Research, Mayo Clinic, Rochester, USA; Sorbonne Université, Department of Medical Oncology, Saint-Antoine Hospital, Paris, France; Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, Equipe labellisée par la Ligue Nationale contre le Cancer, Paris, France.
| | - Q Shi
- Alliance Statistics and Data Center, Mayo Clinic, Rochester, USA
| | - J Meyers
- Alliance Statistics and Data Center, Mayo Clinic, Rochester, USA
| | - Z Jin
- Division of Oncology, Mayo Clinic and Mayo Comprehensive Cancer Center, Rochester, USA
| | - M Svrcek
- Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, Equipe labellisée par la Ligue Nationale contre le Cancer, Paris, France; Sorbonne Université, Department of Pathology, Saint-Antoine Hospital, Paris, France
| | - C Fuchs
- Genentech, South San Francisco, USA; Division of Hematology and Medical Oncology, Department of Internal Medicine, Yale School of Medicine, and Yale Cancer Center, New Haven, USA
| | - F Couture
- Hôtel-Dieu de Québec, Quebec, Canada
| | - P Kuebler
- Columbus NCI Community Clinical Oncology Research Program, Columbus, USA
| | - K K Ciombor
- Division of Hematology/Oncology, Vanderbilt University Medical Center, Nashville, USA
| | - J Bendell
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, USA
| | - A De Jesus-Acosta
- Department of Medical Oncology, John Hopkins University, Baltimore, USA
| | - P Kumar
- Illinois Cancercare, P.C., Peoria, USA
| | - D Lewis
- Southeast Clinical Oncology Research, Cone Health Medical Group, Asheboro, USA
| | - B Tan
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, USA
| | - M M Bertagnolli
- Office of the Alliance Group Chair, Brigham and Women's Hospital, Boston, USA
| | - P Philip
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, USA
| | - C Blanke
- SWOG Cancer Research Network Group Chair's Office, Oregon Health and Science University Knight Cancer Institute, Portland, USA
| | - E M O'Reilly
- Memorial Sloan Kettering Cancer Center, and Weill Cornell Medical Center, New York, USA
| | - A Shields
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, USA
| | - J A Meyerhardt
- Department of Medical Oncology, Dana-Farber/Partners Cancer Care, Boston, USA
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20
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Jin Z, Gan C, Luo G, Hu G, Yang X, Qian Z, Yao S. Notoginsenoside R1 protects hypoxia-reoxygenation deprivation-induced injury by upregulation of miR-132 in H9c2 cells. Hum Exp Toxicol 2021; 40:S29-S38. [PMID: 34212764 DOI: 10.1177/09603271211025589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Myocardial ischemia/reperfusion injury (IRI) is a common perioperative complication of heart and great vessels surgery, aggravating the original myocardial damage and seriously affecting the postoperative recovery of cardiac function. The aim of this study was to reveal the functional effects and potential mechanisms of notoginsenoside R1 (NG-R1) in myocardial cells injured by hypoxia-reoxygenation (H/R). METHODS The rat cardiomyocyte line H9c2 was subjected to H/R with or without NG-R1 treatment. The levels of miR-132 and HBEGF in the cell were altered by microRNA or short-hairpin RNA transfection. Cell viability, apoptosis, lactate dehydrogenase (LDH) and malondialdehyde (MDA) were monitored. Dual luciferin was used to detect the relationship between miR-132 and HBEGF. RESULTS NG-R1 (20 μM) had no impact on H9c2 cells, but cell viability was significantly reduced at 80 μM. NG-R1 (20 μM) protected H9c2 cells against H/R-induced cell damage, accompanied by increased cell viability, reduced cell apoptosis, and downregulation of LDH and MDA. Furthermore, the level of miR-132 was decreased in response to H/R exposure but then increased after NG-R1 treatment. When miR-132 was overexpressed, H/R-induced cell damage could be recovered. Downregulation of miR-132 limited the protective effect of NG-R1 on H/R damage. We also found that HBEGF was a direct target of miR-132. The expression of HBEGF was increased upon H/R damage, and this increase was reversed after NG-R1 treatment. CONCLUSIONS This study demonstrated that NG-R1 markedly protected H9c2 cells against H/R-induced damage via upregulation of miR-132 and downregulation of its target protein HBEGF.
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Affiliation(s)
- Z Jin
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - C Gan
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - G Luo
- Department of Pharmacy, Jiangshan Hospital of Traditional Chinese Medicine, Quzhou, Zhejiang, China
| | - G Hu
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - X Yang
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - Z Qian
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - S Yao
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
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21
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Liddell S, Wintheiser G, Jin Z, Tran N, Mahipal A. P-278 Checkpoint inhibitors in patients with advanced, refractory biliary tract cancers. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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22
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Jin Z, Piao LH, Sun GC, Lv CX, Jing Y, Jin RH. Long non-coding RNA plasmacytoma variant translocation 1 (PVT1) promotes glioblastoma multiforme progression via regulating miR-1301-3p/TMBIM6 axis. Eur Rev Med Pharmacol Sci 2021; 24:11658-11665. [PMID: 33275233 DOI: 10.26355/eurrev_202011_23810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To explore whether plasmacytoma variant translocation 1 (PVT1) could regulate glioblastoma multiforme (GBM) progression via microRNA-1301-3p (miR-1301-3p) and transmembrane BAX inhibitor motif containing 6 (TMBIM6) axis. MATERIALS AND METHODS Expression patterns of PVT1 and RMBIM6 in GBM patients were analyzed using GEPIA, an online gene expression analysis tool. Levels of PVT1 in GBM cells and normal cells were analyzed with quantitative real-time PCR method. Cell Counting Kit-8 (CCK-8), transwell invasion assay, and flow cytometry assay were applied to detect cell viability and apoptosis. Connections of PVT1 or TMBIM6 with miR-1301-3p were validated with bioinformatic tool and luciferase activity reporter assay. RESULTS PVT1 was significantly expressed in GBM tissues and cells. PVT1 promotes GBM cell proliferation and invasion but inhibits apoptosis in vitro. TMBIM6 was significantly expressed in GBM tissues. The knockdown of TMBIM6 reversed the stimulation effects of PVT1 on GBM cell malignancy behaviors with miR-1301-3p as a bridge. CONCLUSIONS Collectively, we showed PVT1 elevated TMBIM6 expression mediated by miR-1301-3p and thus to promote GBM progression.
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Affiliation(s)
- Z Jin
- Department of Neurosurgery, The First Hospital of Jilin University, Changchun, P.R. China.
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Xiao J, Wang L, Chai N, Liu T, Jin Z, Rinklebe J. Groundwater hydrochemistry, source identification and pollution assessment in intensive industrial areas, eastern Chinese loess plateau. Environ Pollut 2021; 278:116930. [PMID: 33744787 DOI: 10.1016/j.envpol.2021.116930] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/23/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
Groundwater is essential for regional ecological-economic system and is an important resource of drinking water, especially in the Chinese Loess Plateau (CLP), where is a typical water-limited ecosystem. Groundwater quality deterioration will affect water security and exacerbate the water shortages. Groundwater hydrochemistry, pollution source apportionment, quality and health risks were evaluated based on analysis of major ions and selected trace elements in seasonal samples of the Fen River Basin (FRB) in the eastern CLP. Groundwaters in the FRB were mainly HCO3--Ca2+-Na+ water type with low dissolved solutes in upstream samples, high values in midstream samples and medium values in downstream samples. Solutes in upstream samples were mainly derived from carbonate weathering, while those in midstream and downstream samples came from silicate weathering, evaporites dissolution and anthropogenic sources. Self-organizing map (SOM) showed the hydrochemistry remained unchanged from dry to wet season for most sampling points. The seasonal variations of Ag, Cd, Ni, Pb, and Tl were significant due to anthropogenic input. High NO3- in upstream and downstream samples resulted primarily from sewage discharge, and high SO42- in midstream and downstream samples was from gypsum- and coal-related industries. In addition, anthropogenic input related to coal industries significantly aggravates pollution of As, Ni, Ag, Fe, and Mn. Influenced by evaporites and anthropogenic input, midstream samples had high salinity, total hardness and water quality indices (WQIs) and were unsuitable for irrigation or drinking purposes. Seasonal variation of WQI in the FRB was unsignificant except Jiaokou River sub-basin, where groundwater quality was worse in the wet season than the dry season due to coal mining. Great attention should be paid to the high non-carcinogenic risks of exposure to F, V, Mn, and Cr via dermal absorption, particularly for children. Overall, groundwater quality in the FRB was best in upstream, medium in midstream and worst in midstream based on different index. Groundwater quality is deteriorated by anthropogenic input and the sewage discharge in the FRB should be strictly controlled. Our report provides a reference for groundwater pollution evaluation and source identification in similar areas.
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Affiliation(s)
- Jun Xiao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China
| | - Lingqing Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Ningpan Chai
- School of Water and Environmental, Chang'an University, Xi'an, Shaanxi, 710054, China
| | - Ting Liu
- College of Geomatics, Xi'an University of Science and Technology, Xi'an, 710054, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany; Department of Environment, Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea
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Wang Y, Jin Z, Zhao S, Chen X. 359 Boundary-aware convolutional neural network for skin lesion segmentation in clinical images. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chen H, Jin Z, Fu Z, Xia F. SK2 channel deletion reduces susceptibility to bupivacaine-induced cardiotoxicity in mouse. Hum Exp Toxicol 2021; 40:1796-1802. [PMID: 33887967 DOI: 10.1177/09603271211010912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bupivacaine is frequently used for regional anesthesia and postoperative analgesia. However, an inadvertent intravenous injection can cause severe cardiotoxicity, manifesting as arrhythmia, hypotension, and even cardiac asystole. The mechanism of bupivacaine-mediated cardiotoxicity remains unclear. SK2 knockout mice (SK) and wild-type mice (WT) were divided into four groups, with 12 mice per group. We determined the difference in bupivacaine cardiotoxicity between SK2 knockout and WT mice by measuring the time to the first arrhythmia (Tarrhythmia) and the time to asystole (Tasystole). Secondary indicators of cardiotoxicity were the time from the beginning of bupivacaine infusion to 20% prolongation of the QT interval (TQT) and the time to 20% widening of the QRS complex (TQRS). Tarrhythmia and Tasystole were significantly longer in the SK-bupi group than in the WT-bupi group (both P < 0.05). TQT and TQRS were longer in the SK-bupi group than in the WT-bupi group (all P < 0.05). The time to 25%, 50%, and 75% reduction in HR in the SK-bupi group was significantly longer than in the WT-bupi group (all P < 0.05). Knocking out the SK2 channel can reduce bupivacaine-induced cardiotoxicity in the mouse.
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Affiliation(s)
- H Chen
- Department of Anesthesiology, 89657First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China
| | - Z Jin
- Department of Anesthesiology, 89657First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China
| | - Z Fu
- Department of Pain Management, 66555Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - F Xia
- Department of Anesthesiology, 89657First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China
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Huang WT, Zhang H, Jin Z, Li K, Hu C, Li ML, Situ J. MiR-219-5p inhibits prostate cancer cell growth and metastasis by targeting HMGA2. Eur Rev Med Pharmacol Sci 2021; 24:4710-4718. [PMID: 32432734 DOI: 10.26355/eurrev_202005_21159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the expression of micro ribonucleic acid (miR)-219-5p in prostate cancer (PCa), its influences on the biological functions of PCa, and its mechanism. PATIENTS AND METHODS The expression differences of miR-219-5p and high mobility group protein A2 (HMGA2) in 30 pairs of PCa tissues and para-carcinoma tissues were detected via quantitative Real Time-Polymerase Chain Reaction (qRT-PCR), and the difference in miR-219-5p expression in PCa cell lines and normal prostatic epithelial cells was also determined via qRT-PCR. The human PC-3 cells were divided into negative control group and miR-219-5p overexpression group. Methyl thiazolyl tetrazolium (MTT) and colony formation assays were adopted to detect the cell proliferative ability, and flow cytometry was applied to determine the cell apoptosis. The expression of apoptosis-related proteins was measured via Western blotting, and the invasive and migratory abilities of the cells were examined through wound-healing and transwell assays. Bioinformatics prediction software and luciferase reporter assay were employed to verify the targets that might be controlled by miR-219-5p. Rescue experiment was conducted to clarify whether the inhibitory effects of miR-219-5p on the growth and metastasis of PC-3 cells depend on the inhibition of HMGA2. RESULTS It was shown in qRT-PCR results that the expression level of miR-219-5p was downregulated remarkably in PCa tissues and cell lines, but overexpressed miR-219-5p could repress the proliferation and promote the apoptosis of PC-3 cells notably. The results of wound-healing and transwell assays indicated that overexpressed miR-219-5p was able to suppress the invasion and metastasis of PC-3 cells. According to Western blotting results, overexpressed miR-219-5p could up-regulate the expressions of pro-apoptotic proteins [Bax, cleaved-caspase-3 and cleaved-poly-ADP-ribose-polymerase (PARP)] and reverse the epithelial-mesenchymal transition (EMT) of PCa cells. It was predicted via the bioinformatics software that HMGA2 gene might be a target gene of miR-219-5p. The Dual-Luciferase reporter assay confirmed that there was a direct regulatory relationship between miR-219-5p and HMGA2. The rescue experiment manifested that overexpressed HMGA2 could reverse the inhibition of miR-219-5p on the growth and metastasis of PC-3 cells. CONCLUSIONS MiR-219-5p suppresses the growth and metastasis abilities of prostate cancer cells by directly repressing the expression of HMGA2.
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Affiliation(s)
- W-T Huang
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
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Abstract
Apelin has been reported to regulate mitochondrial function in myocardial ischemia-reperfusion injury and cerebral ischemia-reperfusion injury. However, the role of apelin-13 in lung ischemia-reperfusion injury (LIRI) remains unclear. This study established an experimental rat model to evaluate the underlying mechanisms of apelin-13 on LIRI. Twenty-four rats were randomly divided to sham operation group (group SM), ischemia/reperfusion group (group IR), and apelin-13 treatment group (group APL). The effects of apelin-13 on LIRI were determined histologically using H&E staining, while the wet/dry weight ratio was used to assess lung edema caused by LIRI. Inflammatory cytokines were also detected in Bronchoalveolar lavage (BAL) fluid by ELISA. The protein expression of UCP2 and the morphological changes of mitochondria were determined by western blotting and electromicroscopy, respectively. The results demonstrated the structural damage of lung tissues and lung edema in group IR. An increased level of inflammatory cytokines including IL-1β, IL-6 and TNF-α was observed in rats with LIRI using ELISA. After that, oxidative stress and morphological damage of mitochondria were also shown in group IR. Yet, the application of apelin-13 reversed all these deleterious effects in group APL. The protective effects of apelin-13 were indicated by decreased reactive oxygen species (ROS) and elevated UCP2 expression levels in rats. In conclusion, this study revealed that apelin-13 had protective effects against LIRI via attenuating lung edema, the production of inflammatory cytokines, oxidative stress and mitochondrial dysfunction.
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Affiliation(s)
- F Xia
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, 12589Shandong University, Jinan, Shandong Province, China
- Department of Anesthesiology, 89657The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - H Chen
- Department of Anesthesiology, 89657The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Z Jin
- Department of Anesthesiology, 89657The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Z Fu
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, 12589Shandong University, Jinan, Shandong Province, China
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Chen H, Xia F, Chen X, Cai Y, Jin Z. Ablation of small conductance calcium-activated potassium type-2 channel (SK 2) delays occurrence of bupivacaine-induced cardiotoxicity in isolated mouse hearts. Hum Exp Toxicol 2021; 40:464-471. [PMID: 32909839 DOI: 10.1177/0960327120958102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bupivacaine is frequently used for conducting regional anesthesia. When accidentally injected or excessively absorbed into circulation, bupivacaine can induce severe arrhythmia and potentially lead to cardiac arrest. The specific mechanisms underlying this cardiotoxicity, however, remain to be clarified. We transfected HEK-293 cells to express the small conductance calcium-activated potassium type-2 channel (SK2), and used a whole-cell patch clamp method in order to explore how bupivacaine affected these channels. We subsequently used SK2 knockout mice to explore the relevance of SK2 channels in bupivacaine-induced cardiotoxicity in isolating mouse hearts, mounting them on a Langendorff apparatus, and perfusing them with bupivacaine. Using this system, arrhythmia, asystole, and cardiac functions were monitored. We observed dose-dependent inhibition of SK2 channels by bupivacaine: half-maximal inhibitory concentration (IC50) value = 18.6 μM (95% CI 10.8-32.1). When SK2 knockout (SK2 -/-) or wild-type (WT) mice were perfused with Krebs-Henseleit buffer (KHB), we did not observe any instances of arrhythmia. When SK2 -/- mice or WT were perfused with KHB containing bupivacaine (40 μM), the time to arrhythmia (Tarrhythmia) and time to asystole (Tasystole) were both significantly longer in SK2 -/- mice relative to WT mice (P < 0.001). Similarly, SK2 -/- mice exhibited a significantly longer time to 25%, 50%, and 75% reductions in heart rate (HR) and rate-pressure product (RPP) relative to WT mice following bupivacaine perfusion (P < 0.001). These results reveal that bupivacaine was able to mediate a dose-dependent inhibition of SK2 channels in HEK-293 cells, and deletion of SK2 channels can delay bupivacaine-induced cardiotoxicity in isolated mouse hearts.
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Affiliation(s)
- H Chen
- Department of Anesthesiology, the 89657First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - F Xia
- Department of Anesthesiology, the 89657First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - X Chen
- Department of Anesthesiology, the 89657First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Y Cai
- Department of Anesthesiology, the 89657First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Z Jin
- Department of Anesthesiology, the 89657First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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Chai N, Yi X, Xiao J, Liu T, Liu Y, Deng L, Jin Z. Spatiotemporal variations, sources, water quality and health risk assessment of trace elements in the Fen River. Sci Total Environ 2021; 757:143882. [PMID: 33316508 DOI: 10.1016/j.scitotenv.2020.143882] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 06/12/2023]
Abstract
As the largest river in Shanxi Province, the Fen River is the main water source for regional economic and ecological development. Water deficiency and industrialization have led to serious water pollution in the Fen River. The major and trace elements of seasonal river waters were measured to determine the spatiotemporal variations and assess the water quality as well as its controlling factors in the Fen River. Trace elements are divided into high abundance elements (B, Ba, Li, and Mn) and low abundance elements (As, Cu, Fe, Ni, Rb, Se, U, and V). The spatial variation of trace elements is obvious, with low values upstream, intermediate values downstream, and very high values midstream. The average values of the trace elements showed different seasonal variations, with high values of As, B, Ba, Mn, and Rb in the wet season, high Cu, V, and Li values in the dry season, and minor seasonal variations of Fe, Ni, Se, and U concentrations. Principal component analysis (PCA) and correlation analysis (CA) showed natural origins of Ba, Mn, Ni, and U, anthropogenic input of As, B, Cu, Li, Rb, Se, and V. According to the results of absolute principal component sore-multivariate linear regression (APCS-MLR), the major pollution sources in the Fen River basin were related to human activities. The land use type significantly influenced the concentrations of trace elements, with high values in the cropland and low values in the forest. The water quality index (WQI) values were higher in the midstream and wet season. In comparison with other rivers in the world, the pollution of the Fen River is at a moderate level. Health risk assessment showed that As, Ba, Mn, Ni, V, and Se were the potential pollutants damaging in the Fen River, especially for children. This study highlights the importance of seasonal sample analysis and can provide vital data for water quality conservation in the Fen River basin.
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Affiliation(s)
- Ningpan Chai
- School of Water and Environment, Chang'an University, Xi'an, Shaanxi 710054, China
| | - Xiu Yi
- School of Water and Environment, Chang'an University, Xi'an, Shaanxi 710054, China
| | - Jun Xiao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China.
| | - Ting Liu
- College of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Yujie Liu
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Li Deng
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China
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Protic A, Jin Z, Marian R, Abd K, Campbell D, Chahl J. Development of a Novel Control Approach for Collaborative Robotics in I4 Intelligent Flexible Assembling Cells. 2020 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM) 2020. [DOI: 10.1109/ieem45057.2020.9309872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- A. Protic
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | - Z. Jin
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | - R. Marian
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | - K. Abd
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | | | - J. Chahl
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
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Protic A, Jin Z, Marian R, Abd K, Campbell D, Chahl J. Implementation of a Bi-Directional Digital Twin for Industry 4 Labs in Academia: A Solution Based on OPC UA. 2020 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM) 2020. [DOI: 10.1109/ieem45057.2020.9309953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- A. Protic
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | - Z. Jin
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | - R. Marian
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | - K. Abd
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
| | | | - J. Chahl
- University of South Australia,UNISA STEM, Australian Research Centre for Interactive and Virtual Environments,Mawson Lakes,Australia
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Flores RJ, Flaherty KR, Jin Z, Bokhari S. The prognostic value of quantitating and localizing F-18 FDG uptake in cardiac sarcoidosis. J Nucl Cardiol 2020; 27:2003-2010. [PMID: 30421379 DOI: 10.1007/s12350-018-01504-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/27/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND There is no identified level of FDG uptake in cardiac sarcoidosis (CS) associated with increased risk of arrhythmias, conduction disease, heart failure, or death. We aim to utilize standardized uptake value (SUV) quantitation and localization to identify patients at increased risk of cardiac events. METHODS AND RESULTS F18-FDG PET/CT with MPI was used in CS diagnosis (N = 67). Mean and max SUV were measured and grouped as basal, mid, and apical disease. Post-scan ventricular tachycardia, AICD placement, complete heart block, pacemaker placement, atrial fibrillation, heart failure, and cardiac-related hospital admissions were recorded (mean follow up 2.98 ± 2 years). Poisson regression analysis revealed that max SUV, mean SUV, as well as mean basal SUV, and LVEF were significantly associated with total cardiac events. Max SUV odds ratio (OR) = 1.068 (95% CI 1.024-1.114, P = 0.002), mean SUV OR = 1.059 (95% CI 1.008-1.113, P = 0.023), mean SUV OR = 1.061 (95% CI 1.012-1.112, P = 0.014), scan LVEF OR = 0.731 (95% CI 0.664-0.805, P < 0.001). CONCLUSIONS SUV at time of CS diagnosis has significant associations with future cardiac events. Patients with higher SUV, particularly in basal segments, are at increased risk of events. Further studies are needed to identify treatment methods utilizing risk stratification of CS.
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Affiliation(s)
- R J Flores
- Internal Medicine, Columbia University Medical Center, New York, NY, USA.
| | - K R Flaherty
- Internal Medicine, Division of Cardiology, Columbia University Medical Center, New York, NY, USA
| | - Z Jin
- Department of Biostatistics, Columbia University, New York, NY, USA
| | - S Bokhari
- Internal Medicine, Division of Cardiology, Columbia University Medical Center, New York, NY, USA
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Jin Z, Jia BX, Tan LD, Chen QM, Liu YH. Combination therapy with metformin and IL-12 to inhibit the growth of hepatic carcinoma by promoting apoptosis and autophagy in HepG2-bearing mice. Eur Rev Med Pharmacol Sci 2020; 24:12368-12379. [PMID: 33336757 DOI: 10.26355/eurrev_202012_24031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To investigate the effects and mechanism of metformin (Met) combined the interleukin-12 (IL-12) on inhibiting hepatoma HepG2 cell proliferation via in vitro and in vivo assays. MATERIALS AND METHODS MTT assay was used to detect inhibitory effects of Met, IL-12 alone or combination on HepG2 cells proliferation. Half inhibitory concentration (IC50) and combination index (CI) were also calculated. Anti-tumor effects of combination or monotherapy on the HepG2-bearing mice were investigated and protein expression levels of apoptosis, as well as the Akt/mTOR/STAT3 signaling pathway-related factors were detected by Western blot. RESULTS MTT results showed that the inhibitory effect of Met combined with IL-12 on HepG2 cell proliferation was significantly enhanced (both p<0.01) compared with monomer therapy group with a significant synergistic effect (CI<1). The apoptosis rate of HepG2 cells treated with Met combined with IL-12 were 88.12±7.15% and significantly higher than the others (all p<0.01). Moreover, combination treatment significantly suppressed hepatoma growth and increased the survival rate of HepG2-bearing mice without evident body weight loss. Western blot analysis showed that Met combined with IL-12 significantly increased the expression of autophagy-related marker proteins, downregulated the protein expression levels of Bcl-2, p-Akt, p-mTOR, p-STAT3, upregulated the expression level of BAX in both HepG2 cells and tumor tissues. CONCLUSIONS Met combined with IL-12 exhibited a synergistic antitumor effect on hepatoma HepG2 cells, and the mechanism may be related to its common inhibition of Akt/mTOR/STAT3 signaling pathway and increase of autophagy in HepG2-bearing mice.
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Affiliation(s)
- Z Jin
- Department of Hepatobiliary and Pancreatic Surgery, the First Hospital of Jilin University, Changchun, Jilin, China.
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Zhang Z, He Y, Wang S, Zhou R, Chen T, Liang Z, Jin Z, Xie P, Wei J. Organ Segmentation from CT Images Using Super Perception Convolutional Neural Networks for Cervical Cancer Brachytherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mannina C, Jin Z, Matsumoto K, Ito K, Biviano A, Elkind M, Rundek T, Homma S, Sacco R, Di Tullio M. Frequency of cardiac arrhythmias in older adults: findings from the subclinical atrial fibrillation and risk of ischemic stroke (SAFARIS) study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Prolonged monitoring of cardiac rhythm has been used in patients with symptomatic arrhythmias and to assess for atrial fibrillation (AF) after cryptogenic stroke, but not in the general population and especially in older adults.
Purpose
To evaluate the frequency of arrhythmias in a community-based cohort of older adults through 14-days continuous cardiac monitoring using a patch-based device.
Methods
Cardiac rhythm was analyzed in 533 participants free of AF and congestive heart failure (CHF) from the tri-ethnic (white, black, Hispanic) Subclinical Atrial Fibrillation and Risk of Ischemic Stroke (SAFARIS) study. AF, supraventricular tachycardia (SVT, defined as 4 beats or more), premature atrial (PACs) and ventricular (PVCs) contractions, ventricular tachycardia (VT, defined as 4 beats or more), sinus pauses (SP) and atrio-ventricular blocks (AVB) were analyzed. Gender, age and race-ethnic differences were examined.
Results
Mean age was 77.2±6.8 years (198 men, 335 women). Recording duration was over 10 days in 91%, and over 13 days in 84%. AF was present in 10 participants (1.9%), atrial flutter in 1 (0.2%). Other arrhythmias are reported in the Table. SP (1.9%) and high-degree AVB (Mobitz II: 0.6%; 3rd degree: 0.9%) were rare. No significant race-ethnic differences were observed.
Conclusion
In older adults without history of stroke or CHF, prolonged rhythm monitoring revealed moderate frequency of AF, but higher than expected frequencies of AF-predisposing conditions such as SVT and frequent PACs. VT episodes were relatively frequent, whereas SP and AVB were less frequent than commonly believed. Most arrhythmias were more frequent in the oldest; ventricular arrhythmias were more common in men than in women.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): NINDS R01 NS083874
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Affiliation(s)
- C Mannina
- University of Palermo, Palermo, Italy
| | - Z Jin
- Columbia University, New York, United States of America
| | - K Matsumoto
- Columbia University, New York, United States of America
| | - K Ito
- Columbia University, New York, United States of America
| | - A Biviano
- Columbia University, New York, United States of America
| | - M Elkind
- Columbia University, New York, United States of America
| | - T Rundek
- University of Miami Leonard M. Miller School of Medicine, Miami, United States of America
| | - S Homma
- Columbia University, New York, United States of America
| | - R Sacco
- University of Miami Leonard M. Miller School of Medicine, Miami, United States of America
| | - M Di Tullio
- Columbia University, New York, United States of America
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36
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Ao H, Dupont-Nivet G, Rohling EJ, Zhang P, Ladant JB, Roberts AP, Licht A, Liu Q, Liu Z, Dekkers MJ, Coxall HK, Jin Z, Huang C, Xiao G, Poulsen CJ, Barbolini N, Meijer N, Sun Q, Qiang X, Yao J, An Z. Orbital climate variability on the northeastern Tibetan Plateau across the Eocene-Oligocene transition. Nat Commun 2020; 11:5249. [PMID: 33067447 PMCID: PMC7567875 DOI: 10.1038/s41467-020-18824-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 09/16/2020] [Indexed: 11/08/2022] Open
Abstract
The first major build-up of Antarctic glaciation occurred in two consecutive stages across the Eocene-Oligocene transition (EOT): the EOT-1 cooling event at ~34.1-33.9 Ma and the Oi-1 glaciation event at ~33.8-33.6 Ma. Detailed orbital-scale terrestrial environmental responses to these events remain poorly known. Here we present magnetic and geochemical climate records from the northeastern Tibetan Plateau margin that are dated precisely from ~35.5 to 31 Ma by combined magneto- and astro-chronology. These records suggest a hydroclimate transition at ~33.7 Ma from eccentricity dominated cycles to oscillations paced by a combination of eccentricity, obliquity, and precession, and confirm that major Asian aridification and cooling occurred at Oi-1. We conclude that this terrestrial orbital response transition coincided with a similar transition in the marine benthic δ18O record for global ice volume and deep-sea temperature variations. The dramatic reorganization of the Asian climate system coincident with Oi-1 was, thus, a response to coeval atmospheric CO2 decline and continental-scale Antarctic glaciation.
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Affiliation(s)
- Hong Ao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.
- CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an, China.
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China.
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, China.
| | - Guillaume Dupont-Nivet
- Université de Rennes, CNRS, Géosciences Rennes, UMR, 6118, Rennes, France.
- Key Laboratory of Orogenic Belts and Crustal Evolution, Peking University, Beijing, China.
- Universität Potsdam, Institute of Geosciences, Potsdam, Germany.
| | - Eelco J Rohling
- Research School of Earth Sciences, Australian National University, Canberra, Australia
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, UK
| | - Peng Zhang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Jean-Baptiste Ladant
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Andrew P Roberts
- Research School of Earth Sciences, Australian National University, Canberra, Australia
| | - Alexis Licht
- Department of Earth and Space Sciences, University of Washington, Seattle, USA
| | - Qingsong Liu
- Centre for Marine Magnetism (CM2), Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Zhonghui Liu
- Department of Earth Sciences, University of Hong Kong, Hong Kong, China
| | - Mark J Dekkers
- Paleomagnetic Laboratory 'Fort Hoofddijk', Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Helen K Coxall
- Department of Geological Sciences, Stockholm University, Stockholm, Sweden
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an, China
- Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China
| | - Chunju Huang
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, China
| | - Guoqiao Xiao
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, China
| | - Christopher J Poulsen
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Natasha Barbolini
- Department of Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Niels Meijer
- Universität Potsdam, Institute of Geosciences, Potsdam, Germany
| | - Qiang Sun
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, China
| | - Xiaoke Qiang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Jiao Yao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Zhisheng An
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.
- CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an, China.
- Interdisciplinary Research Center of Earth Science Frontier, Beijing Normal University, Beijing, China.
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Li J, Liu X, Xu L, Jin Z. Current status of demoralization and its relationship with medical coping style, self-efficacy and perceived social support in Chinese breast cancer patients. The European Journal of Psychiatry 2020. [DOI: 10.1016/j.ejpsy.2020.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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38
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Zhang XM, Liu RM, Jin Z, Liu TT, Chen DY, Fan Z, Zeng M, Lu XB, Gao XS, Qin MH, Liu JM. Phase transitions in the classical exchange-anisotropic Kitaev-Heisenberg model. Phys Rev E 2020; 102:042132. [PMID: 33212739 DOI: 10.1103/physreve.102.042132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/10/2020] [Indexed: 06/11/2023]
Abstract
The Kitaev model on the honeycomb lattice has been receiving substantial attention due to the discovery of quantum spin liquid state associated with this model. Consequently, its classical partners such as the Kitaev-Heisenberg (KH) model and associated phase transitions become concerned. Specifically, an intermediate Kosterlitz-Thouless (KT) phase engaged in the transition from the high-temperature (T) disordered state to the low-T sixfold degenerate state is predicted in the isotropic KH model [Phys. Rev. Lett. 109, 187201 (2012)10.1103/PhysRevLett.109.187201], but so far no sufficient experimental proof has been reported. In this work, we consider an essential extension of this KH model on the honeycomb lattice by including the Kitaev exchange anisotropy that is non-negligible in realistic materials. The associated phase transitions are thus investigated using the Monte Carlo simulations. It is found that such an anisotropy will result in a degradation of the sixfold degeneracy of the ground state in the isotropic KH model down to the fourfold or twofold degenerate ground state, and the finite-T phase transitions will also be modified remarkably. Interestingly, the intermediate KT phase can be suppressed by this Kitaev exchange anisotropy. This work thus provides a more realistic description of the physics ingredient with the KH model and presents a possible explanation on absence of the intermediate phase in real materials where the Kitaev exchange anisotropy can be more or less available.
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Affiliation(s)
- X M Zhang
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - R M Liu
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Z Jin
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - T T Liu
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - D Y Chen
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Z Fan
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - M Zeng
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - X B Lu
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - X S Gao
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - M H Qin
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - J-M Liu
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, and Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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39
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Song WY, Ding ZX, Hu JL, Bao CC, Wu M, Jin Z, Peng ZH, Shen HB. [Construction of urban scale-free network model and its epidemiological significance in the prevention and control of COVID-19]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:817-821. [PMID: 32842308 DOI: 10.3760/cma.j.cn112150-20200402-00505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
COVID-19 is a public health emergency currently. In this study, a scale-free network model is established based on the Spring Migration data in 2020.The cities is clustered into three different modules. The epidemic of the cities in the black module was the most serious, followed by the red and the cyan. The black module contains 9 cities in Zhejiang province and 8 cities in Guangdong province, most of them located in the southeast coastal economic belt. These cities should be the key cities for epidemic prevention and control.
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Affiliation(s)
- W Y Song
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Z X Ding
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - J L Hu
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
| | - C C Bao
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
| | - M Wu
- Complex Systems Research Center, Shanxi University, Taiyuan 030006, China
| | - Z Jin
- Institute for Prevention and Control of Acute Infectious Diseases, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Z H Peng
- Center for Global Health, Nanjing Medical University, Nanjing 210029, China
| | - H B Shen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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40
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Wan D, Yang H, Jin Z, Xue B, Song L, Mao X, Yang J. Spatiotemporal trends of atmospheric Pb over the last century across inland China. Sci Total Environ 2020; 729:138399. [PMID: 32498150 DOI: 10.1016/j.scitotenv.2020.138399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
Sedimentary records from remote regions contain pollutants derived dominantly from atmospheric input, and thus have the potential to trace past atmospheric pollution history. Based on seventeen sediment records from relatively remote areas of China, atmospheric Pb pollution history during the last century was studied. These records suggest only occasionally slight pollution before ~1950 and display synchronous Pb enrichment processes since the 1950s, implying the start of widespread atmospheric Pb pollution in China. This corresponded well with the beginning of socio-economic development after the establishment of the People's Republic of China. However, owing to the Chinese Cultural Revolution, a roughly unchanged atmospheric Pb status was found in the 1960-70s except on the Qinghai-Tibetan Plateau, where atmospheric Pb still increased gradually caused by long-range atmospheric transport of pollutants from southwest Asia. In ~1980-2000, atmospheric Pb experienced the greatest increase, resulting from rapid development of extensive economy after the Reform and Opening-up in 1978. After ~2000, atmospheric Pb generally stopped increase due to the phasing out of leaded gasoline, but it remained high, with the highest in Southwest China, medium in Northeast China, central North China and the Qinghai-Tibetan Plateau, and the lowest in the southeast Mongolia Plateau and West China. This study reveals spatio-temporal variations of atmospheric Pb in inland China under the influence of recent human activities, providing an important supplement for understanding global Pb pollution in the Anthropocene.
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Affiliation(s)
- Dejun Wan
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China; Key Laboratory of Quaternary Chronology and Hydro-environmental Evolution, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
| | - Handong Yang
- Environmental Change Research Centre, University College London, London WC1E 6BT, UK
| | - Zhangdong Jin
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an 710049, China
| | - Bin Xue
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Lei Song
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China; Key Laboratory of Quaternary Chronology and Hydro-environmental Evolution, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
| | - Xin Mao
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China; Key Laboratory of Quaternary Chronology and Hydro-environmental Evolution, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
| | - Jinsong Yang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China; Key Laboratory of Quaternary Chronology and Hydro-environmental Evolution, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
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41
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Liu JY, Zhou YJ, Zhai FF, Han F, Zhou LX, Ni J, Yao M, Zhang S, Jin Z, Cui L, Zhu YC. Cerebral Microbleeds Are Associated with Loss of White Matter Integrity. AJNR Am J Neuroradiol 2020; 41:1397-1404. [PMID: 32719091 DOI: 10.3174/ajnr.a6622] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 05/01/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Previous studies have shown that diffusion tensor imaging suggests a diffuse loss of white matter integrity in people with white matter hyperintensities or lacunes. The purpose of this study was to investigate whether the presence of cerebral microbleeds and their distribution are related to the integrity of white matter microstructures. MATERIALS AND METHODS The study comprised 982 participants who underwent brain MR imaging to determine microbleed status. The cross-sectional relation between microbleeds and the microstructural integrity of the white matter was assessed by 2 statistical methods: a multilinear regression model based on the average DTI parameters of normal-appearing white matter and Tract-Based Spatial Statistics analysis, a tract-based voxelwise analysis. Fiber tractography was used to spatially describe the microstructural abnormalities along WM tracts containing a cerebral microbleed. RESULTS The presence of cerebral microbleeds was associated with lower mean fractional anisotropy and higher mean diffusivity, axial diffusivity, and radial diffusivity, and the association remained when cardiovascular risk factors and cerebral small-vessel disease markers were further adjusted. Tract-Based Spatial Statistics analysis indicated strictly lobar cerebral microbleeds associated with lower fractional anisotropy, higher mean diffusivity, and higher radial diffusivity in the internal capsule and corpus callosum after adjusting other cerebral small-vessel disease markers, while only a few voxels remained associated with deep cerebral microbleeds. Diffusion abnormalities gradients along WM tracts containing a cerebral microbleed were not found in fiber tractography analysis. CONCLUSIONS Cerebral microbleeds are associated with widely distributed changes in white matter, despite their focal appearance on SWI.
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Affiliation(s)
- J-Y Liu
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Y-J Zhou
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - F-F Zhai
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - F Han
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - L-X Zhou
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - J Ni
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - M Yao
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - S Zhang
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Z Jin
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - L Cui
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China
| | - Y-C Zhu
- From the Departments of Neurology (J.-Y.L., Y.-J.Z., F.-F.Z., F.H., L.-X.Z., J.N., M.Y., L.C., Y.-C.Z.), Radiology (Z.J.), and Cardiology (S.Z.), Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China.
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Lee S, Yu N, Laughlin B, Haddock M, Ashman J, Merrell K, Rule W, Wittich MN, Mathis K, Merchea A, Hubbard J, Bekaii-Saab T, Ahn D, Jin Z, Mahipal A, Etzioni D, Mishra N, Krishnan S, Hallemeier C, Sio T. P-130 Short course pelvic radiotherapy for localized and oligometastatic rectal adenocarcinoma: The Mayo Clinic experience. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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43
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Eslami P, Hartman E, Karady J, Thondapu V, Albaghdadi M, Jin Z, Cefalo N, Marsden A, Coksun A, Lu M, Stone P, Wentzel J, Hoffmann U. Endothelial Shear Stress Calculation In Human Coronary Arteries: Comparison Between 3d Reconstructions Based On Invasive And Noninvasive Imaging. J Cardiovasc Comput Tomogr 2020. [DOI: 10.1016/j.jcct.2020.06.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Zhang W, Wang X, Hu Y, Huang JJ, Cheng Y, Jin Z, Wang GF. [Clinical features and prognosis of pneumocystis pneumonia in patients treated with rituximab for autoimmune diseases]. Zhonghua Yi Xue Za Zhi 2020; 100:614-618. [PMID: 32164117 DOI: 10.3760/cma.j.issn.0376-2491.2020.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To determine the clinical features and outcomes of pneumocystic pneumonia (PCP) in patients treated with rituximab for autoimmune diseases. Methods: PCP patients with autoimmune diseases as underlying diseases from January 2009 to April 2019 in Peking University First Hospital (male 67 cases, female 35 cases, age 17-79) were retrospectively reviewed. Patients were grouped as rituximab group and non-rituximab group based on the fact if they were treated with rituximab before the onset of PCP. Demographic data, clinical features, and outcomes of the two groups were analyzed. Results: There were 102 cases altogether, and 7 patients were treated with rituximab before the onset of PCP. Patients in rituximab group were relatively younger than that in non-rituximab group [(32.0±18.7) vs (52.4±14.9) years, P=0.010]. Patients in rituximab group had more CD3(+), CD4(+), CD8(+)T lymphocytes in peripheral blood samples than that in non-rituximab group [(1 306±596) vs (546±439)/μl, (674±401) vs (243±232)/μl, (616±249) vs (282±256)/μl, respectively, all P<0.01]. However, the B lymphocyte count and plasma level of IgG and IgM were significantly lower in rituximab group than that in non-rituximab group [0 (0, 0.2) vs 72 (50.0, 124.4)/μl, 4.0 (2.6, 5.8) vs 9.4 (5.3, 12.0) g/L, 0.3 (0.2, 1.0) vs 1.1 (0.6, 1.8) g/L, respectively, all P<0.05]. The incidence of Cytomegalovirus (CMV) pneumonia was significantly lower in rituximab group (0/7 and 57/95, P=0.007). Other demographic data, the use of corticosteroids, the incidence of severe PCP, mechanical ventilation, intubation, pneumothorax and mediastinal emphysema complications, as well as hospital mortality and length of stay in hospital in the two groups were comparable. Conclusions: In patients treated with rituximab for autoimmune diseases, the number of B lymphocytes in peripheral blood and the plasma level of immunoglobulins but not CD3(+), CD4(+), and CD8(+)T lymphocyte counts may play an important role in the pathogenesis of PCP. These patients are not vulnerable to be complicated with CMV pneumonia.
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Affiliation(s)
- W Zhang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China
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Somphonsane R, Ramamoorthy H, He G, Nathawat J, Yin S, Kwan CP, Arabchigavkani N, Barut B, Zhao M, Jin Z, Fransson J, Bird JP. Universal scaling of weak localization in graphene due to bias-induced dispersion decoherence. Sci Rep 2020; 10:5611. [PMID: 32221340 PMCID: PMC7101405 DOI: 10.1038/s41598-020-62313-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 03/11/2020] [Indexed: 11/29/2022] Open
Abstract
The differential conductance of graphene is shown to exhibit a zero-bias anomaly at low temperatures, arising from a suppression of the quantum corrections due to weak localization and electron interactions. A simple rescaling of these data, free of any adjustable parameters, shows that this anomaly exhibits a universal, temperature- (T) independent form. According to this, the differential conductance is approximately constant at small voltages (V < kBT/e), while at larger voltages it increases logarithmically with the applied bias. For theoretical insight into the origins of this behaviour, which is inconsistent with electron heating, we formulate a model for weak-localization in the presence of nonequilibrium transport. According to this model, the applied voltage causes unavoidable dispersion decoherence, which arises as diffusing electron partial waves, with a spread of energies defined by the value of the applied voltage, gradually decohere with one another as they diffuse through the system. The decoherence yields a universal scaling of the conductance as a function of eV/kBT, with a logarithmic variation for eV/kBT > 1, variations in accordance with the results of experiment. Our theoretical description of nonequilibrium transport in the presence of this source of decoherence exhibits strong similarities with the results of experiment, including the aforementioned rescaling of the conductance and its logarithmic variation as a function of the applied voltage.
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Affiliation(s)
- R Somphonsane
- Department of Physics, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand.
- Thailand Center of Excellence in Physics, Commission on Higher Education, 328 Si Ayutthaya Road, Bangkok, 10400, Thailand.
| | - H Ramamoorthy
- Department of Electronic Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - G He
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1900, USA
| | - J Nathawat
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1900, USA
| | - S Yin
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1900, USA
| | - C-P Kwan
- Department of Physics, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1500, USA
| | - N Arabchigavkani
- Department of Physics, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1500, USA
| | - B Barut
- Department of Physics, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1500, USA
| | - M Zhao
- High-Frequency High-Voltage Device and Integrated Circuits Center, Institute of Microelectronics of Chinese Academy of Sciences, 3 Beitucheng West Road, Chaoyang District, Beijing, PR China
| | - Z Jin
- High-Frequency High-Voltage Device and Integrated Circuits Center, Institute of Microelectronics of Chinese Academy of Sciences, 3 Beitucheng West Road, Chaoyang District, Beijing, PR China
| | - J Fransson
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 21, Uppsala, Sweden
| | - J P Bird
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260-1900, USA
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Gou LF, Liu CY, Deng L, Jin Z. Quantifying the impact of recovery during chromatographic purification on the accuracy of lithium isotopic determination by multi-collector inductively coupled plasma mass spectrometry. Rapid Commun Mass Spectrom 2020; 34:e8577. [PMID: 31498931 DOI: 10.1002/rcm.8577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/08/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Lithium (Li) isotopes have increasingly been applied as tracers in Earth and planetary sciences and their effectiveness relies upon accurate and precise Li isotopic data. Nowadays, multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) combined with chromatographic purification is the most common strategy for obtaining Li isotopic ratios in natural samples, with a long-term internal precision better than 0.3‰ in most laboratories. However, there is a large discrepancy in the Li isotopic compositions of the same reference materials determined by MC-ICP-MS among international laboratories (e.g. ca 3.5‰ difference for measurements of homogeneous seawater), which has been attributed to insufficient recovery of Li during chromatographic purification. Despite this recognition, the exact impact of Li recovery during purification on Li isotopic determinations by MC-ICP-MS has never been quantified. METHODS We employed a normal distribution function to model Li elution curves and quantified the Li isotopic fractionation resulting from Li recovery during chromatographic purification. Furthermore, we compared the calculated and measured relative recovery (R) with the Li isotopic ratios determined by ICP-MS to validate our theoretical calculation. RESULTS The theoretical calculations showed that R should be higher than 99.8% in order to avoid observable Li isotopic fractionation during chromatographic purification at IEECAS. This idea is further supported by the better long-term external precisions for data with R ≥ 99.8% compared with previous values of 99.5% ≤ R < 99.8%. Our results indicated that the large differences in the reported Li isotopic ratios for homogeneous seawater among international laboratories are probably attributable to Li isotopic fractionation occurring during ion exchange chromatography. CONCLUSIONS Our theoretical calculation via R is the first quantitative and convenient approach for monitoring Li isotopic fractionation during sample purification, ensuring that R ≥ 99.8% can avoid observable Li isotopic fractionation during purification, which will improve the accuracy of Li isotopic measurements by MC-ICP-MS and the comparability among laboratories.
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Affiliation(s)
- Long-Fei Gou
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chun-Yao Liu
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Deng
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
| | - Zhangdong Jin
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
- Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China
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Tian ZG, Zhuang Y, Jin Z, Zhou F, Zhu LF, Shen PC. MicroRNA-337-5p participates in the development and progression of osteosarcoma via ERBB, MAPK and VEGF pathways. Eur Rev Med Pharmacol Sci 2019; 22:5460-5470. [PMID: 30229817 DOI: 10.26355/eurrev_201809_15806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the role of microRNA-337-5p in osteosarcoma (OS) and its underlying mechanism. PATIENTS AND METHODS The microRNA (microRNA-337-5p) that may be related to OS development was screened out by GEO (Gene Expression Omnibus) database. Survival analysis and ROC curve were performed according to microRNA-337-5p expressions in OA patients. Besides, the correlation between microRNA-337-5p expression and clinical parameters was evaluated by Chi-square analysis. Cox regression analysis was performed to detect the relationship between the overall survival and clinical parameters of OA patients. Subsequently, enriched functions and pathways of microRNA-337-5p were predicted by GESA (gene enrichment sets analysis). MicroRNA-337-5p expression was detected in 65 OS tissue samples and 30 normal tissue samples by qRT-PCR (quantitative Real-Time Polymerase Chain Reaction). For in vitro experiments, after microRNA-337-5p mimics or microRNA-337-5p inhibitor was transfected into OS cells, proliferative and invasive abilities were detected by CCK-8 (Cell Counting Kit-8) and transwell assay, respectively. Finally, Western blot was used to explore the underlying mechanism of microRNA-337-5p in regulating OS. RESULTS MicroRNA-337-5p was overexpressed in serum and tissue samples of OS patients, which was valuable in diagnosing OS. Besides, microRNA-337-5p expression was correlated with the overall survival and necrosis range of OA patients, whereas not correlated with age and sex. GESA indicated that microRNA-337-5p was enriched in ERBB, MAPK, and VEGF pathways. In vitro experiments indicated elevated proliferative and invasive abilities in MG63 and U2OS cells after microRNA-337-5p overexpression. Furthermore, increased expressions of ERBB2, Erk1/2, and VEGF121 were observed in OS cells after microRNA-337-5p overexpression. CONCLUSIONS MicroRNA-337-5p is upregulated in OS tissues, which is an independent prognostic factor in OS. Overexpressed microRNA-337-5p can promote proliferative and invasive abilities of OS cells via activating ERBB, MAPK, and VEGF pathways.
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Affiliation(s)
- Z-G Tian
- Department of Orthopedics, The First People's Hospital of Wujiang District, Suzhou, China.
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Abstract
Significant advances in the treatment of metastatic colorectal cancer (mcrc) since the early 2000s have led to improved clinical outcomes, including overall survival (os). When fluorouracil was the sole treatment agent for mcrc, os in phase iii studies was approximately 12 months. Now, in 2019, the median os (mos) in the most recent mcrc clinical trials has been approaching 3 years. The biologic agents that target the vascular endothelial growth factor (vegf), epithelial growth factor receptor (egfr), human epidermal growth factor receptor 2 (her2), PD-1, ctla-4, ntrk, and braf pathways play important roles in the mcrc treatment algorithm, given their significant-sometimes dramatic-activity. Emerging data indicate that the choice of a specific biologic at a particular time (line of treatment) for specific patient populations (based on tumour characteristics) is critical. In the present review, we discuss the available evidence for optimal biologic sequencing in the management of mcrc.
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Affiliation(s)
- Z Jin
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905 U.S.A
| | - J M Hubbard
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905 U.S.A
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Jin Z, Haddad T, Hubbard J, Hartgers M, Leventakos K, Cornwell K, King K, Franke B, Pomerleau K, Bibeau V, Coverdill S, Rammage M, Helgeson J, Mahipal A. A pilot study to implement an artificial intelligence (AI) system for gastrointestinal cancer clinical trial matching. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz257.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dinakaran D, Baker S, Ghila A, Jin Z, Warkentin B, Moore R, Hendzel M, Fallone G, Pearcey R. Effect of Magnetic Field During Radiotherapy on Double-Strand DNA Breaks and Cell Proliferation on Prostate, Cervical, and Breast Cancer Cells. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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