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Kong T, Kang B, Wang W, Deckert-Gaudig T, Zhang Z, Deckert V. Thermal-effect dominated plasmonic catalysis on silver nanoislands. Nanoscale 2024. [PMID: 38738933 DOI: 10.1039/d4nr00049h] [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] [Indexed: 05/14/2024]
Abstract
Plasmonic metal nanostructures with the intrinsic property of localized surface plasmon resonance can effectively promote energy conversion in many applications such as photocatalysis, photothermal therapy, seawater desalinization, etc. It is known that not only are plasmonically excited hot electrons generated from metal nanostructures under light irradiation, which can effectively trigger chemical reactions, but also plasmonically induced heating simultaneously occurs. Although plasmonic catalysis has been widely explored in recent years, the underlying mechanisms for distinguishing the contribution of hot electrons from thermal effects are not fully understood. Here, a simple and efficient self-assembly system using silver nanoislands as plasmonic substrates is designed to investigate the photo-induced azo coupling reaction of nitro- and amino-groups at various temperatures. In the experiments, surface-enhanced Raman spectroscopy is employed to monitor the time and temperature dependence of plasmon-induced catalytic reactions. It was found that a combination of hot electrons and thermal effects contribute to the reactivity. The thermal effects play the dominant role in the plasmon-induced azo coupling reaction of nitro-groups, which suggests that the localized temperature must be considered in the development of photonic applications based on plasmonic nanomaterials.
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Affiliation(s)
- Ting Kong
- School of Science, Xi'an University of Posts & Telecommunications, 710121, Xi'an, China.
- School of Physics and Information Technology, Shaanxi Normal University, 710119, Xi'an, China.
| | - Bowen Kang
- School of Physics and Information Technology, Shaanxi Normal University, 710119, Xi'an, China.
| | - Wei Wang
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany.
| | - Tanja Deckert-Gaudig
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany.
| | - Zhenglong Zhang
- School of Physics and Information Technology, Shaanxi Normal University, 710119, Xi'an, China.
| | - Volker Deckert
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany.
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
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2
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Zhang J, Xiao M, Su RG, Kong T, Zhang D, Zhou CW, Cheng GS. Silicon nanowire FET biosensor and its application in acute myocardial infarction. Nanotechnology 2023; 35:112001. [PMID: 38081075 DOI: 10.1088/1361-6528/ad1438] [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: 05/09/2023] [Accepted: 12/11/2023] [Indexed: 12/28/2023]
Abstract
Over the last two decades, silicon nanowire field-effect transistors (SiNW-FETs) with prominent merits of high surface-to-volume ratio, excellent biocompatibility and mature fabrication with standard silicon technology, have been widely studied as ultrahigh sensitive biosensors for the detection of target biomolecules, such as proteins, nucleic acids, cells and viruses so on. Herein we present a comprehensive review of the fundamental aspects of SiNW-FET biosensors, involving the working principle and the device fabrication, surface functionalization, and system integration with fluid exchange and electrical detection. Futhermore, we emphatically discuss the electrical detection of cardiac-specific biomarkers related to acute myocardial infarction disease. SiNW-FET biosensors are being increasingly exploited as promising diagnostic devices, which provide high sensitivity, high integration density, high speed sampling, strong specificity, and real-time and label-free detection for simple and cheap clinical testing.
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Affiliation(s)
- J Zhang
- College of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215500, People's Republic of China
| | - M Xiao
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - R G Su
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - T Kong
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - D Zhang
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - C W Zhou
- Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, United States of America
| | - G S Cheng
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
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3
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Gibert-Brunet E, Tudryn A, Kong T, Tucholka P, Motavalli-Anbaran SH, Marlin C, Noret A, Lankarani M, Ahmady-Birgani H, Karimi G. Salt wedges and trapped brines of low-latitude endoreic saline lakes as potential modulators of GHG emission. Sci Rep 2023; 13:21118. [PMID: 38036673 PMCID: PMC10689730 DOI: 10.1038/s41598-023-48148-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/22/2023] [Indexed: 12/02/2023] Open
Abstract
Large salt lakes are long-term witnesses to climatic conditions and land use in their basins. The majority are experiencing a drastic drop in water levels due to climate change and human impact. Endoreic Lake Urmia (NW Iran), the sixth largest salt lake worldwide, is a striking example of this decline. Quantification of the relative contributions of natural variability and human impact on the lake's water supply is therefore essential. Here we present isotopic and radiocarbon analyses of surface and groundwater from the Shahr Chay River catchment, entering Lake Urmia on its western shore, and radiocarbon dating of a sedimentary core. Lake Urmia behaves like a large saltwater wedge almost entirely fed by the river and shallow groundwater. This leads to trapping of residual brines and formation of CH4 and secondary CO2 greenhouse gases, impacting sediment geochemical records and corresponding time scales for paleoenvironmental reconstructions. We conclude that (1) salt lakes functioning like a saline wedge, allowing organic matter oxidation, could contribute to increasing methane sources or reducing carbon sinks globally, and (2) endoreic basins worldwide need to be monitored before aridification-related salinization leads to the establishment of a saline wedge precluding any possibility of return to an equilibrium state.
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Affiliation(s)
| | - Alina Tudryn
- CNRS, UMR 8148-GEOPS, University of Paris-Saclay, 91405, Orsay, France
| | - Ting Kong
- CNRS, UMR 8148-GEOPS, University of Paris-Saclay, 91405, Orsay, France.
| | - Piotr Tucholka
- Faculty of Geology, Warsaw University, 02-089, Warsaw, Poland
| | | | - Christelle Marlin
- CNRS, UMR 8148-GEOPS, University of Paris-Saclay, 91405, Orsay, France
| | - Aurélie Noret
- CNRS, UMR 8148-GEOPS, University of Paris-Saclay, 91405, Orsay, France
| | - Mohammad Lankarani
- School of Geology, University-College of Science, University of Tehran, Tehran, Iran
| | | | - Gilda Karimi
- Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
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4
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Kong T, Zeng S. The Effect of Perceived Environmental Uncertainty on University Students' Anxiety, Academic Engagement, and Prosocial Behavior. Behav Sci (Basel) 2023; 13:906. [PMID: 37998653 PMCID: PMC10669797 DOI: 10.3390/bs13110906] [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: 09/18/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023] Open
Abstract
Uncertainty, as the predominant characteristic of the contemporary landscape, poses significant challenges and exerts profound influence on individual decision making and behaviors; however, there remains a limited understanding of its impact on university student behavior. Building upon the uncertainty management theory, this study presents a conceptual framework to investigate the impact of perceived environmental uncertainty on university students' anxiety levels and behaviors, including academic engagement and prosocial behavior. Additionally, our model proposes that the intolerance of uncertainty moderates a mediating effect on anxiety. These hypotheses are empirically tested using a sample of 221 Chinese university students. The results reveal a positive relationship between perceived environmental uncertainty and anxiety among university students; subsequently, anxiety exerts a negative influence on both academic engagement and prosocial behavior. Furthermore, we find that anxiety serves as a psychological mediator between perceived environmental uncertainty and both academic engagement and prosocial behavior. This research also underscores the significance of the intolerance of uncertainty in shaping university students' involvement in academic pursuits when confronted with anxiety stemming from perceived environmental uncertainty. Consequently, these findings have practical implications for facilitating university students' adaptive coping strategies in uncertain contexts and mitigating the negative effects of anxiety on their behavioral responses.
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Affiliation(s)
- Ting Kong
- Business School, University of Shanghai for Science and Technology, Shanghai 200093, China;
| | - Shuang Zeng
- College of Foreign Languages, University of Shanghai for Science and Technology, Shanghai 200093, China
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Li ZH, Kong T, Dunne EM, Liu M, Chang JS, Zhang TW, Chan M, McDermott R. Examining the Efficacy and Safety Profile of Palliative Radiotherapy Using 30 Gy in 5 Fractions. Int J Radiat Oncol Biol Phys 2023; 117:e129. [PMID: 37784686 DOI: 10.1016/j.ijrobp.2023.06.926] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Higher biological equivalent doses of radiotherapy (RT) can improve symptom palliation and local control in select tumor sites. However, not all patients meet criteria for treatment with stereotactic ablative radiotherapy (SABR). Furthermore, SABR is a resource intensive technique which may limit its use in many centers. The 30 Gray in 5 fractions regimen (30/5) stems from a modification of 5-fraction SABR regimens. It is a conformal, homogenous hypo-fractionated regimen that delivers higher dose than conventional palliative RT while still respecting the normal tissue constraints for 5-fraction SABR. It uses streamlined contouring and planning with less stringent requirements for immobilization and image guidance, compared to what is required for SABR. This study evaluates the clinical outcomes of patients receiving 30/5. MATERIALS/METHODS A single institution retrospective review of clinical and treatment data was performed for patients who received 30/5 from October 2020 to August 2022. Local control (LC) was calculated for all treatment courses. Distant metastasis-free survival (DMFS), progression-free survival (PFS), and overall survival (OS) were calculated for all patients. Survival analyses were analyzed by the Kaplan-Meier method and curves compared by log-rank test. Univariate and multivariate analyses were performed using cox-regression analysis. RESULTS A total of 77 patients and 92 courses of 30/5 were available for analysis. The most common primary tumor was lung (44%), followed by gastrointestinal (GI; 20%), breast (10%), and genitourinary (10%). The median age of patients was 64 years (range: 37-93). The median tumor size treated was 11.4 cm^3 (range: 0.3 - 210.9 cm^3). Treatment sites included lung (31%), lymph nodes (22%), non-spine bone (20%), and spine (15%). At median follow-up of 10.1 months (mo), 25 deaths occurred. Median LC after receiving 30/5 was 18.5 mo (95% CI: 15.7-21.3 mo), median DMFS was 6.6 months (95% CI: 4.6-8.6 mo), median PFS was 6.4 mo (95% CI: 4.9-8.0 mo), and median OS was 18.1 mo (95% CI: 13.1-23.1 mo). Median time to initiating, restarting, or changing systemic therapy was 12.8 mo (95% CI: 7.6-18.0 mo). Radiosensitive (lung, prostate, breast, gynecological, and head/neck) tumors had better LC than radioresistant (GI, renal cell, sarcoma, melanoma) tumors (median 20.9 vs 12.1 mo, p < 0.02). Six grade 2 toxicities occurred (6.5% of all treatments). No grade 3 or higher toxicities occurred. CONCLUSION The 30/5 regimen is a safe, well-tolerated, and resource efficient regimen with effective local control. This may serve as a practical alternative for patients who require palliative RT but not optimal candidates for SABR. As expected, radiosensitive tumors had better local control than radioresistant tumors. Future research can further explore the safety, efficacy, and indications of 30/5 as a palliative RT option.
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Affiliation(s)
- Z H Li
- BC Cancer Vancouver, Vancouver, BC, Canada
| | - T Kong
- BC Cancer Vancouver, Vancouver, BC, Canada
| | - E M Dunne
- BC Cancer Vancouver, Vancouver, BC, Canada
| | - M Liu
- BC Cancer Vancouver, Vancouver, BC, Canada
| | - J S Chang
- BC Cancer Vancouver, Vancouver, BC, Canada; Yonsei Cancer Center, Seoul, Korea, Republic of (South) Korea
| | - T W Zhang
- BC Cancer Vancouver, Vancouver, BC, Canada
| | - M Chan
- BC Cancer Vancouver, Vancouver, BC, Canada
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Parmar GS, Kong T, Hamm J, Liu M, Lefresne S, Carolan H, Berthelet E, Chan J, Nichol A. RAPid SimPLE (RAPPLE) Targeted Radiation Treatment vs. Whole Brain Radiotherapy: A Retrospective Study of Matched Patients with Brain Metastases and Poor Prognosis. Int J Radiat Oncol Biol Phys 2023; 117:e141. [PMID: 37784714 DOI: 10.1016/j.ijrobp.2023.06.951] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Patients with brain metastases and poor prognosis are often treated with whole brain radiotherapy (WBRT) which can cause a variety of side effects. Our institution devised a new brain-sparing radiotherapy technique to treat multiple brain metastasis for patients whose poor prognosis does not warrant SRS. This study compares the oncologic outcomes of matched patients treated with RAPPLE and WBRT. MATERIALS/METHODS RAPPLE uses single-isocenter, coplanar volumetric modulated arc therapy and a non-stereotactic head-shell with IntegraBite™. Brain metastasis were contoured in a single gross tumor volume and expanded by 3 mm to create a planning target volume, of which 99.5% was covered with 95-110% of 20 Gy in 5 fractions. Patients treated with a first course of RAPPLE from January 2017 to December 2021 were identified in an institutional database. Using age, cancer diagnosis, and treatment date, we identified a matched cohort of patients receiving a first course of WBRT with 20 Gy in 5 fractions. Overall survival (OS) was calculated using the Kaplan-Meier method, and intracranial progression was calculated using cumulative incidence with a competing risk of death. Log-rank, Cox regression and Fine-Gray analyses were used for comparisons. Paired t-tests were used to compare patient-reported fatigue measured using 5-level Likert scales before and 2-6 weeks after radiotherapy. RESULTS The RAPPLE and WBRT cohorts each had 137 patients. The matched median age was 69 years. Primary diagnoses were lung cancer (72%) and other cancers (28%). The minimum, median, and maximum numbers of metastases treated with RAPPLE were 1, 3, and 18, respectively. The median Karnofsky Performance Score (KPS) was 70 in both cohorts. The median survival was 4.1 months for RAPPLE and 4.2 months for WBRT, and the 18-month OS was 11% for RAPPLE and 12% for WBRT (log-rank p = 0.8). On multivariable analysis, KPS, diagnosis, extracranial disease, and use of systemic therapy before and after RT were predictive of OS, but use of RAPPLE vs. WBRT was not (HR = 0.97, 95% CI: 0.75-1.25, p = 0.8). The 18-month cumulative incidence of intracranial progression was 0.49 for RAPPLE and 0.37 for WBRT (p = 0.04). After RAPPLE, 17% required more focal RT and 4% required salvage WBRT, while after WBRT, 3% required focal RT and 4% required repeat WBRT. After RAPPLE, mean patient-reported fatigue remained stable from baseline to first follow-up (2.18 vs. 2.27, p = 0.9), but, after WBRT, it worsened from baseline to first follow-up (1.95 vs. 2.63, p = 0.002). CONCLUSION As expected, after RAPPLE, more targeted radiotherapy was required for intracranial progression, but there was no difference in OS between the RAPPLE and WBRT cohorts. Patients reported significantly worse fatigue after WBRT. Almost all patients (96%) treated with RAPPLE avoided WBRT.
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Affiliation(s)
- G S Parmar
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
| | - T Kong
- University of British Columbia, Vancouver, BC, Canada; BC Cancer Vancouver, Vancouver, BC, Canada
| | - J Hamm
- BC Cancer, Vancouver, BC, Canada
| | - M Liu
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
| | - S Lefresne
- University of British Columbia, Vancouver, BC, Canada; BC Cancer Vancouver, Vancouver, BC, Canada
| | - H Carolan
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
| | - E Berthelet
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
| | - J Chan
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
| | - A Nichol
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
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Zhang B, Kong T, Zhang C, Mi X, Chen H, Guo X, Zhou X, Ji M, Fu Z, Zhang Z, Zheng H. Plasmon driven nanocrystal transformation in low temperature environments. Nanoscale 2022; 14:16314-16320. [PMID: 36305203 DOI: 10.1039/d2nr03887k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The preparation and modification of crystal structures in cryogenic environments with conventional methods is challenging, but it is essential for the development of composite materials, energy savings, and future human space exploration. Plasmon induced hot carriers and local thermal effects help to overcome the challenges of chemical reactions under extreme conditions, for which molecular reactions have attracted considerable research attention. In this work, the plasmon thermal effect enables fast and efficient nanocrystal transformation in cryogenic environments, which was previously unattainable with conventional heating methods. The transformation of NaYF4 nanocrystals on gold nanoparticle island films can be achieved even in a low temperature environment of 11 K. Compared with the structure with gold nanoparticles adhered to NaYF4 nanocrystals directly, the structure of gold nanoparticle island films with an Al2O3 layer offered better heat trapping properties, which allows the complete transformation to take place of NaYF4 nanocrystals into Y2O3 nanocrystals in low temperature environments. This work explores the potential of applying the photothermal effect of a plasmon to induce rapid transformation of nanocrystals in extreme environments and provides insight into the process of crystal transformation and growth.
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Affiliation(s)
- Baobao Zhang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Ting Kong
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Chengyun Zhang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Xiaohu Mi
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Huan Chen
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Xiaojun Guo
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Xilin Zhou
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Min Ji
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Zhengkun Fu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Zhenglong Zhang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Hairong Zheng
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
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Zhang W, Yang H, Kong T, Han B. 355P Anlotinib plus standard chemotherapy as first-line treatment in extensive-stage small cell lung cancer patients. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.393] [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: 12/05/2022] Open
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Zhang W, Yang H, Kong T, Han B. EP14.01-025 Anlotinib Plus Standard Chemotherapy as First-line Treatment in Extensive-Stage Small Cell Lung Cancer Patients. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.960] [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: 10/14/2022]
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Kong T, Ma L, Ai G. Research on Improving Satellite Positioning Precision Based on Multi-Frequency Navigation Signals. Sensors (Basel) 2022; 22:s22114210. [PMID: 35684828 PMCID: PMC9185411 DOI: 10.3390/s22114210] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/26/2022] [Accepted: 05/30/2022] [Indexed: 12/04/2022]
Abstract
In satellite positioning systems, optimizing navigation satellite constellation and reducing the observation residuals are usually adopted to improve positioning precision and accuracy of the receiver. This paper presents a method to improve positioning precision by using multi-frequency navigation signals. The observation data of CAPS and GPS system are used to simulate the experiment. When the number of downlink frequencies is different, the root mean square of positioning error, improvement percentage, and standard deviation are calculated, respectively. When the number of descending frequencies is k, the root mean square of positioning error in three-dimensional space is 1/k of that in single frequency. The theoretical derivation and experiment show that the precision of satellite positioning can be effectively improved by using multi-frequency navigation signals. The research work can provide theoretical support and data reference for the future research of satellite positioning.
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Affiliation(s)
- Ting Kong
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; (T.K.); (G.A.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lihua Ma
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; (T.K.); (G.A.)
- Correspondence: ; Tel.: +86-10-64807751
| | - Guoxiang Ai
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; (T.K.); (G.A.)
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11
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Wu H, Feng T, Jiang W, Kong T. Environmental Penalties, Investor Attention and Stock Market Reaction: Moderating Roles of Air Pollution and Industry Saliency. Int J Environ Res Public Health 2022; 19:ijerph19052660. [PMID: 35270353 PMCID: PMC8910116 DOI: 10.3390/ijerph19052660] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 12/03/2022]
Abstract
Despite the importance of environmental penalties in environmental enforcement, how and under what situations they impact stock market reaction is still unclear. Drawing on the theories of expectancy violation and attention driven, a conceptual model is built to explore how environmental penalty influences stock market reaction through investor attention. Furthermore, it is explored that the air pollution and industry saliency facilitate the indirect relationship between environmental penalty and investor attention. We empirically test this theoretical framework using a sample of 88 listed companies that received the environmental penalty. Up to 31 December 2020, a total of 88 A-share listed companies in Shanghai and Shenzhen stock exchanges were obtained as samples by collecting the announcement of environmental penalties of listed companies on Juchao Network. Furthermore Baidu index is taken as a proxy for investor attention in this study. Our findings reveal that investor attention plays mediating role in the relationship between environmental penalty and abnormal returns, while the direct effect of environmental penalty on stock market reaction has not been verified, thus, investor attention plays a complete mediating role between them. In addition, air pollution moderates the relationship between Environmental penalties and investor attention. The study found that enterprises in heavy pollution industries might suffer safety-in-numbers effect, which would weaken the directly negative impact of environmental penalties, and verified the moderating effect of industry saliency. These findings provide theoretical and practical implications for understanding how environmental penalties influence on stock market reaction.
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Affiliation(s)
- Hua Wu
- Inner Mongolia University of Finance and Economics, Hohhot 010070, China;
| | - Taiwen Feng
- School of Economics and Management, Harbin Institute of Technology (Weihai), Weihai 264209, China
- Correspondence: ; Tel.: +86-631-5678061
| | - Wenbo Jiang
- School of Economics and Management, Dalian University of Technology, Dalian 116081, China;
| | - Ting Kong
- Business School, University of Shanghai for Science & Technology, Shanghai 201210, China;
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12
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Kong T, Nichol A, Ho C, Benny A, Chooback N, Fraser I, Gondara L, Lefresne S. Population-Based Analysis of Outcomes for Patients With Brain Metastases From Epidermal Growth Factor Receptor Mutation Positive Non-Small Cell Lung Cancer Treated With Tyrosine Kinase Inhibitor Alone or Combined With Radiotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1538] [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: 11/24/2022]
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13
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Fu Y, Peng Y, Zhao S, Mou J, Zeng L, Jiang X, Yang C, Huang C, Li Y, Lu Y, Wu M, Yang Y, Kong T, Lai Q, Wu Y, Yao Y, Wang Y, Gou L, Yang J. Combination Foretinib and Anti-PD-1 Antibody Immunotherapy for Colorectal Carcinoma. Front Cell Dev Biol 2021; 9:689727. [PMID: 34307367 PMCID: PMC8298272 DOI: 10.3389/fcell.2021.689727] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/11/2021] [Indexed: 02/05/2023] Open
Abstract
Immune checkpoint inhibitors have achieved unprecedented success in cancer immunotherapy. However, the overall response rate to immune checkpoint inhibitor therapy for many cancers is only between 20 and 40%, and even less for colorectal cancer (CRC) patients. Thus, there is an urgent need to develop an efficient immunotherapeutic strategy for CRC. Here, we developed a novel CRC combination therapy consisting of a multiple receptor tyrosine kinase inhibitor (Foretinib) and anti-PD-1 antibody. The combination therapy significantly inhibited tumor growth in mice, led to improved tumor regression without relapse (83% for CT26 tumors and 50% for MC38 tumors) and prolonged overall survival. Mechanistically, Foretinib caused increased levels of PD-L1 via activating the JAK2-STAT1 pathway, which could improve the effectiveness of the immune checkpoint inhibitor. Moreover, the combination therapy remodeled the tumor microenvironment and enhanced anti-tumor immunity by further increasing the infiltration and improving the function of T cells, decreasing the percentage of tumor-associated macrophages (TAMs) and inhibiting their polarization toward the M2 phenotype. Furthermore, the combination therapy inhibited the metastasis of CT26-Luc tumors to the lung in BALB/c mouse by reducing proportions of regulatory T-cells, TAMs and M2 phenotype TAMs in their lungs. This study suggests that a novel combination therapy utilizing both Foretinib and anti-PD-1 antibody could be an effective combination strategy for CRC immunotherapy.
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Affiliation(s)
- Yuyin Fu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yujia Peng
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Shengyan Zhao
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Mou
- Laboratory of Infectious Diseases and Vaccine, West China Hospital, Sichuan University, Chengdu, China
| | - Lishi Zeng
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaohua Jiang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Chengli Yang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Cheng Huang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yuyan Li
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yin Lu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Mengdan Wu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yanfang Yang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Ting Kong
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Qinhuai Lai
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yangping Wu
- Department of Clinical Research Management, West China Hospital, Sichuan University, Chengdu, China
| | - Yuqin Yao
- West China School of Public Health and Healthy Food Evaluation Research Center/No. 4 West China Teaching Hospital, Sichuan University, Chengdu, China
| | - Yuxi Wang
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Lantu Gou
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jinliang Yang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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Zheng C, Zhang SX, Zhao R, Cheng L, Kong T, Sun X, Feng S, Wang Q, Li X, Yu Q, He PF. POS0851 IDENTIFICATION OF HUB GENES AND PATHWAYS IN DERMATOMYOSITIS BY BIOINFORMATICS ANALYSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Dermatomyositis (DM) is a chronic systemic autoimmune disease characterized by inflammatory infiltrates in the skin and muscle1. The genes and pathways in the inflamed myopathies in patients with DM are poorly understood2.Objectives:To identify the key genes and pathways associated with DM and further discover its pathogenesis.Methods:Muscle tissue gene expression profile (GSE143323) were acquired from the GEO database, which included 39 DM samples and 20 normal samples. The differentially expressed genes (DEGs) in DM muscle tissue were screened by adopting the R software. Gene ontology (GO) and Kyoto Encyclopedia of Genome (KEGG) pathway enrichment analysis was performed by Metascape online analysis tool. A protein-protein interaction (PPI) network was then constructed by STRING software using the genes in significantly different pathways. Network of DEGs was analyzed by Cytoscape software. And degree of nodes was used to screen key genes.Results:Totally, 126 DEGs were obtained, which contained 122 up-regulated and 4 down-regulated. GO analysis revealed that most of the DEGs were significantly enriched in type I interferon signaling pathway, response to interferon-gamma, collagen-containing extracellular matrix, response to interferon-alpha and bacterium, positive regulation of cell death, leukocyte chemotaxis. KEGG pathway analysis showed that upregulated DEGs enhanced pathways associated with the hepatitis C, complement and coagulation cascades, p53 signaling pathway, RIG-I-like receptor signaling, Osteoclast differentiation, and AGE-RAGE signaling pathway. Ten hub genes were identified in DM, they were ISG15, IRF7, STAT1, MX1, OASL, OAS2, OAS1, OAS3, GBP1, and IRF9 according to the Cytoscape software and cytoHubba plugin.Conclusion:The findings from this bioinformatics network analysis study identified the key hub genes that might provide new molecular markers for its diagnosis and treatment.References:[1]Olazagasti JM, Niewold TB, Reed AM. Immunological biomarkers in dermatomyositis. Curr Rheumatol Rep 2015;17(11):68. doi: 10.1007/s11926-015-0543-y [published Online First: 2015/09/26].[2]Chen LY, Cui ZL, Hua FC, et al. Bioinformatics analysis of gene expression profiles of dermatomyositis. Mol Med Rep 2016;14(4):3785-90. doi: 10.3892/mmr.2016.5703 [published Online First: 2016/09/08].[3]Zhou Y, Zhou B, Pache L, et al. Metascape provides a biologist-oriented resource for the analysis of systems-level datasets. Nat Commun 2019;10(1):1523. doi: 10.1038/s41467-019-09234-6 [published Online First: 2019/04/05].Acknowledgements:This project was supported by National Science Foundation of China (82001740), Open Fund from the Key Laboratory of Cellular Physiology (Shanxi Medical University) (KLCP2019) and Innovation Plan for Postgraduate Education in Shanxi Province (2020BY078).Disclosure of Interests:None declared
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Cheng L, Zhang SX, Song S, Zheng C, Sun X, Feng S, Kong T, Shi G, Li X, He PF, Yu Q. POS0458 IDENTIFICATION OF HUB GENES AND MOLECULAR PATHWAYS IN PATIENTS WITH RHEUMATOID ARTHRITIS BY BIOINFORMATICS ANALYSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Rheumatoid arthritis (RA) is a chronic, inflammatory synovitis based systemic disease of unknown etiology1. The genes and pathways in the inflamed synovium of RA patients are poorly understood.Objectives:This study aims to identify differentially expressed genes (DEGs) associated with the progression of synovitis in RA using bioinformatics analysis and explore its pathogenesis2.Methods:RA expression profile microarray data GSE89408 were acquired from the public gene chip database (GEO), including 152 synovial tissue samples from RA and 28 healthy synovial tissue samples. The DEGs of RA synovial tissues were screened by adopting the R software. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed. Protein-protein interaction (PPI) networks were assembled with Cytoscape software.Results:A total of 654 DEGs (268 up-regulated genes and 386 down-regulated genes) were obtained by the differential analysis. The GO enrichment results showed that the up-regulated genes were significantly enriched in the biological processes of myeloid leukocyte activation, cellular response to interferon-gamma and immune response-regulating signaling pathway, and the down-regulated genes were significantly enriched in the biological processes of extracellular matrix, retinoid metabolic process and regulation of lipid metabolic process. The KEGG annotation showed the up-regulated genes mainly participated in the staphylococcus aureus infection, chemokine signaling pathway, lysosome signaling pathway and the down-regulated genes mainly participated in the PPAR signaling pathway, AMPK signaling pathway, ECM-receptor interaction and so on. The 9 hub genes (PTPRC, TLR2, tyrobp, CTSS, CCL2, CCR5, B2M, fcgr1a and PPBP) were obtained based on the String database model by using the Cytoscape software and cytoHubba plugin3.Conclusion:The findings identified the molecular mechanisms and the key hub genes of pathogenesis and progression of RA.References:[1]Xiong Y, Mi BB, Liu MF, et al. Bioinformatics Analysis and Identification of Genes and Molecular Pathways Involved in Synovial Inflammation in Rheumatoid Arthritis. Med Sci Monit 2019;25:2246-56. doi: 10.12659/MSM.915451 [published Online First: 2019/03/28][2]Mun S, Lee J, Park A, et al. Proteomics Approach for the Discovery of Rheumatoid Arthritis Biomarkers Using Mass Spectrometry. Int J Mol Sci 2019;20(18) doi: 10.3390/ijms20184368 [published Online First: 2019/09/08][3]Zhu N, Hou J, Wu Y, et al. Identification of key genes in rheumatoid arthritis and osteoarthritis based on bioinformatics analysis. Medicine (Baltimore) 2018;97(22):e10997. doi: 10.1097/MD.0000000000010997 [published Online First: 2018/06/01]Acknowledgements:This project was supported by National Science Foundation of China (82001740), Open Fund from the Key Laboratory of Cellular Physiology (Shanxi Medical University) (KLCP2019) and Innovation Plan for Postgraduate Education in Shanxi Province (2020BY078).Disclosure of Interests:None declared
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Sun X, Zhang SX, Song S, Kong T, Zheng C, Cheng L, Feng S, Shi G, LI X, He PF, Yu Q. AB0005 IDENTIFICATION OF KEY GENES AND PATHWAYS FOR PSORIASIS BASED ON GEO DATABASES BY BIOINFORMATICS ANALYSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Psoriasis is an immune-mediated, genetic disease manifesting in the skin or joints or both, and also has a strong genetic predisposition and autoimmune pathogenic traits1. The hallmark of psoriasis is sustained inflammation that leads to uncontrolled keratinocyte proliferation and dysfunctional differentiation. And it’s also a chronic relapsing disease, which often necessitates a long-term therapy2.Objectives:To investigate the molecular mechanisms of psoriasis and find the potential gene targets for diagnosis and treating psoriasis.Methods:Total 334 gene expression data of patients with psoriasis research (GSE13355 GSE14905 and GSE30999) were obtained from the Gene Expression Omnibus database. After data preprocessing and screening of differentially expressed genes (DEGs) by R software. Online toll Metascape3 was used to analyze Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of DEGs. Interactions of proteins encoded by DEGs were discovered by Protein-protein interaction network (PPI) using STRING online software. Cytoscape software was utilized to visualize PPI and the degree of each DEGs was obtained by analyzing the topological structure of the PPI network.Results:A total of 611 DEGs were found to be differentially expressed in psoriasis. GO analysis revealed that up-regulated DEGs were mostly associated with defense and response to external stimulus while down-regulated DEGs were mostly associated with metabolism and synthesis of lipids. KEGG enrichment analysis suggested they were mainly enriched in IL-17 signaling, Toll-like receptor signaling and PPAR signaling pathways, Cytokine-cytokine receptor interaction and lipid metabolism. In addition, top 9 key genes (CXCL10, OASL, IFIT1, IFIT3, RSAD2, MX1, OAS1, IFI44 and OAS2) were identified through Cytoscape.Conclusion:DEGs of psoriasis may play an essential role in disease development and may be potential pathogeneses of psoriasis.References:[1]Boehncke WH, Schon MP. Psoriasis. Lancet 2015;386(9997):983-94. doi: 10.1016/S0140-6736(14)61909-7 [published Online First: 2015/05/31].[2]Zhang YJ, Sun YZ, Gao XH, et al. Integrated bioinformatic analysis of differentially expressed genes and signaling pathways in plaque psoriasis. Mol Med Rep 2019;20(1):225-35. doi: 10.3892/mmr.2019.10241 [published Online First: 2019/05/23].[3]Zhou Y, Zhou B, Pache L, et al. Metascape provides a biologist-oriented resource for the analysis of systems-level datasets. Nat Commun 2019;10(1):1523. doi: 10.1038/s41467-019-09234-6 [published Online First: 2019/04/05].Acknowledgements:This project was supported by National Science Foundation of China (82001740), Open Fund from the Key Laboratory of Cellular Physiology (Shanxi Medical University) (KLCP2019) and Innovation Plan for Postgraduate Education in Shanxi Province (2020BY078).Disclosure of Interests:None declared
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Kong T, Zhang SX, Song S, Sun X, Zheng C, Feng S, Cheng L, Shi G, Li X, He PF, Yu Q. POS0742 SCREENING AND BIOINFORMATICS ANALYSIS OF HUB GENES AND PATHWAYS FOR PRIMARY SJÖGREN’S SYNDROME BASED ON GEO DATABASE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Primary Sjögren’s syndrome (pSS) is an autoimmune disease that featured as lymphoplasmacytic infiltration of the exocrine glands leading to sicca symptoms1. However, its underlying molecular mechanisms remain elusive.Objectives:This study aims to identify differentially expressed genes (DEGs) and pathways associated with the progression of pSS using bioinformatics analysis and explore its pathogenesis.Methods:The pSS-associated gene chip data set GSE66795 was obtained from the Gene Expression Omnibus (GEO) database, which included 131 cases of fully-phenotyped pSS patients’ whole blood samples and 29 cases of control samples. DEGs were screened Using R software. Online tool Metascape2 was used to make Gene Ontology (GO) and KEGG pathway enrichment. The PPI network was performed using String database. Hub genes were identified by Cytoscape.Results:A total of 108 DEGs were captured, including 101 up-regulated genes and 7 down-regulated genes. GO enrichment showed that these DEGs were primarily enriched in defense response to virus, response to interferon-gamma, regulation of innate immune response, response to interferon-beta, double-stranded RNA binding, response to interferon-alpha. KEGG pathway enrichment analysis showed these DEGs were principally enriched in Influenza A, RIG-I-like receptor signaling pathway, necroptosis, Staphylococcus aureus infection. Finally, 9 hub genes (STAT1, IRF7, OAS2, GBP1, OAS1, IFIT3, IFIH1, OAS3, DDX60) had highest degree value.Conclusion:The findings identified molecular mechanisms and the key hub genes that may involve in the occurrence and development of pSS.References:[1]Francois H, Mariette X. Renal involvement in primary Sjogren syndrome. Nat Rev Nephrol 2016;12(2):82-93. doi: 10.1038/nrneph.2015.174 [published Online First: 2015/11/17].[2]Zhou Y, Zhou B, Pache L, et al. Metascape provides a biologist-oriented resource for the analysis of systems-level datasets. Nat Commun 2019;10(1):1523. doi: 10.1038/s41467-019-09234-6 [published Online First: 2019/04/05].Acknowledgements:This project was supported by National Science Foundation of China (82001740), Open Fund from the Key Laboratory of Cellular Physiology (Shanxi Medical University) (KLCP2019) and Innovation Plan for Postgraduate Education in Shanxi Province (2020BY078).Disclosure of Interests:None declared
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Feng S, Zhang SX, Zhao R, Zheng C, Cheng L, Kong T, Sun X, Wang Q, Li X, Yu Q, He PF. POS0848 IDENTIFICATION OF POTENTIAL CRUCIAL GENES AND KEY PATHWAYS IN PULMONARY ARTERIAL HYPERTENSION WITH SYSTEMIC SCLEROSIS BY BIOINFORMATIC ANALYSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Pulmonary arterial hypertension with systemic sclerosis (SSc-PAH) is the main cause of death in patients with SSc. Early diagnosis and timely treatment are very important to reduce the mortality of patients with SSc-PAH1. At present, there are not many sensitive markers for the diagnosis of SSc-PAH. Therefore, it is necessary to mine more sensitive markers as more accurate and practical predictors, which is of great significance for the diagnosis and treatment of SSc-PAH.Objectives:To discover the differentially expressed genes (DEGs) and activated signaling pathways in SSc-PAH.Methods:Fifty-five samples (27 SSc-PAH v.s 28 normal controls) in GSE33463 chip data obtained from Gene Expression Omnibus (GEO) were included in this study. DEGs in SSc-PAH patients were screened by R, key pathways and hub genes were discoved by Metascape2, STRING3 and Cytoscape.Results:Total 431 genes with large differences were identified, including 238 up-regulated genes and 193 down-regulated genes, after standardizing the data (|logFC| > 1; P < 0.05). GO analysis showed that the upregulated genes were mainly involved in defense response to virus, hemoglobin complex, platelet alpha granule membrane and cytokine binding. The downregulated genes were mainly characterized by positive regulation of cell death, regulation of MAPK cascade, regulation of DNA-binding transcription factor activity and transcription factor AP-1 complex. Several significant enriched pathways obtained in the KEGG pathway analysis were Influenza A, Hepatitis C, IL-17 signaling pathway, MAPK signaling pathway, Toll-like receptor signaling pathway. Finally, after the selected differential genes were introduced into STRING online software, the data information of protein interaction network was derived, and 12 core genes in the network were identified, they were CXCL8, PPBP, LPAR1, FPR2, GNG11, CXCL10, LPAR5, JUN, C3AR1, CCR2, CCR3, IRF2.Conclusion:The genes and signal pathways related to SSc-PAH discovered by bioinformatics methods could not only provided new molecular markers for its diagnosis and treatment, but also provided new ideas for its related biological research.References:[1]Zheng JN, Li Y, Yan YM, et al. Identification and Validation of Key Genes Associated With Systemic Sclerosis-Related Pulmonary Hypertension. Front Genet 2020;11:816. doi: 10.3389/fgene.2020.00816 [published Online First: 2020/08/15].[2]Zhou Y, Zhou B, Pache L, et al. Metascape provides a biologist-oriented resource for the analysis of systems-level datasets. Nat Commun 2019;10(1):1523. doi: 10.1038/s41467-019-09234-6 [published Online First: 2019/04/05].[3]Szklarczyk D, Gable AL, Lyon D, et al. STRING v11: protein-protein association networks with increased coverage, supporting functional discovery in genome-wide experimental datasets. Nucleic Acids Res 2019;47(D1):D607-D13. doi: 10.1093/nar/gky1131 [published Online First: 2018/11/27].Acknowledgements:This project was supported by National Science Foundation of China (82001740), Open Fund from the Key Laboratory of Cellular Physiology (Shanxi Medical University) (KLCP2019) and Innovation Plan for Postgraduate Education in Shanxi Province (2020BY078).Disclosure of Interests:None declared
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Kong T, Zhang C, Lu J, Kang B, Fu Z, Li J, Yan L, Zhang Z, Zheng H, Xu H. An enhanced plasmonic photothermal effect for crystal transformation by a heat-trapping structure. Nanoscale 2021; 13:4585-4591. [PMID: 33605960 DOI: 10.1039/d0nr06714h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Photothermal utilization is an important approach for sustaining global ecological balance. Due to the enhancement of light absorption through surface plasmon resonance, silver or gold nanostructures can be used as efficient photothermal heat sources in visible and near-infrared regions. Herein, a heat-trapping system of self-assembled gold nanoislands with a thin Al2O3 layer is designed to significantly enhance the photothermal effect, which can contribute to a fast crystal transformation. Compared with pure gold nanoislands, an approximately 10-fold enhancement of the photothermal conversion efficiency is observed by using the heat-trapping layer, which results from enhanced light absorption and efficient heat utilization. With the heat-trapping layer, a relatively high and stable photothermal conversion efficiency is realized even at low temperature, and the thermal stability of the plasmonic nanostructure is also observed to improve, especially for silver nanoislands used in air. These results provide a strong additional support for the further development of photothermal applications and offer an efficient pathway for the thermal manipulation of plasmons at the nanoscale.
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Affiliation(s)
- Ting Kong
- School of Physics and Information Technology, Shaanxi Normal University, 710119, Xi'an, China.
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Li Z, Kong T, Boyeva V, Wang L, Ingledew P. In Silico Biopsy of Online Cancer Resource Quality – High or Low Grade? Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1431] [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: 10/23/2022]
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Kong T, Chen L, Duan F, Wang L, Zhao X, Hou X, Zhou H, Miao W, Wang L, Hu S. 1797P Efficacy and safety analysis of EP / EC regimen combined with first-line anlotinib hydrochloride in the treatment of extensive small cell lung cancer: Results from a phase II single-arm trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1558] [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: 11/29/2022] Open
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Zhang C, Kong T, Fu Z, Zhang Z, Zheng H. Hot electron and thermal effects in plasmonic catalysis of nanocrystal transformation. Nanoscale 2020; 12:8768-8774. [PMID: 32101225 DOI: 10.1039/c9nr10041e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Plasmonic metal nanoparticles have the ability to harvest visible light and cause effective energy conversion, and they are considered as promising catalysts to drive chemical reactions. Although plasmonic catalysis has been widely used to mediate the reaction of organic molecules, the mechanism of contribution of thermal and hot carriers remains unclear. The catalysis of hot carriers is normally proposed as the dominant role of plasmonic catalysis, while the contribution of plasmonic thermal effects is often ignored, since the molecules on the metal surface are unstable at high temperatures. Here, plasmon catalytic nanocrystal transformation including oxidation reaction and optimization of the crystal structure is employed to investigate the plasmonic contributions of hot electron and thermal effects in plasmonic catalysis. It is found that the transformation rate and the corresponding product are very different with and without the assistance of hot electron catalysis. The thermal effect plays a dominant role in plasmon-catalyzed material transformation, and hot electrons can promote the oxidation reaction by facilitating the generation of active oxygen. The investigation provides insight into the specific role of hot electron and thermal effects in plasmonic catalysis, which is critically important for exploiting the highly localized fast plasmonic thermal effect and for designing energy-efficient plasmonic catalysts.
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Affiliation(s)
- Chengyun Zhang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
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Hui RT, Song L, Kong T, Wang JZ, Zou YB, Liu Z, Hou Q. [Moving forward to the next "seek treasures" frontier: precision cardiovascular medicine]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 47:253-258. [PMID: 30897890 DOI: 10.3760/cma.j.issn.0253-3758.2019.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- R T Hui
- Department of Cardiology, Fuwai Hospital, National Cente for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - L Song
- Department of Cardiology, Fuwai Hospital, National Cente for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - T Kong
- Department of Cardiology, Fuwai Hospital, National Cente for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - J Z Wang
- Department of Cardiology, Fuwai Hospital, National Cente for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Y B Zou
- Department of Cardiology, Fuwai Hospital, National Cente for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Z Liu
- Bestnovo (Beijing) Laboratory, Beijing 102206, China
| | - Q Hou
- Bestnovo (Beijing) Laboratory, Beijing 102206, China
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Yang F, Yang F, Wang G, Shi W, Kong T, Yang P, Bai D, Zhou B. Pharmacokinetics of orbifloxacin in crucian carp (Carassius auratus) after intravenous and intramuscular administration. J Vet Pharmacol Ther 2018; 41:599-604. [PMID: 29465160 DOI: 10.1111/jvp.12495] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 11/29/2017] [Accepted: 01/28/2018] [Indexed: 11/26/2022]
Abstract
The pharmacokinetics of orbifloxacin was studied after a single dose (7.5 mg/kg) of intravenous or intramuscular administration to crucian carp (Carassius auratus) reared in freshwater at 25°C. Plasma samples were collected from six fish per sampling point. Orbifloxacin concentrations were determined by high-performance liquid chromatography with a 0.02 μg/ml limit of detection, then were subjected to noncompartmental analysis. After intravenous injection, initial concentration of 5.83 μg/ml, apparent elimination rate constant (λz ) of 0.039 hr-1 , apparent elimination half-life (T1/2λz ) of 17.90 hr, systemic total body clearance (Cl) of 75.47 ml hr-1 kg-1 , volume of distribution (Vz) of 1,948.76 ml/kg, and volume of distribution at steady-state (Vss) of 1,863.97 ml/kg were determined, respectively. While after intramuscular administration, the λz , T1/2λz , mean absorption time (MAT), absorption half-life (T1/2ka ), and bioavailability were determined as 0.027 hr-1 , 25.69, 10.26, 7.11 hr, and 96.46%, respectively, while the peak concentration was observed as 3.11 ± 0.06 μg/ml at 2.0 hr. It was shown that orbifloxacin was completely but relatively slowly absorbed, extensively distributed, and slowly eliminated in crucian carp, and an orbifloxacin dosage of 10 mg/kg administered intravenously or intramuscularly would be expected to successfully treat crucian carp infected by strains with MIC values ≤0.5 μg/ml.
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Affiliation(s)
- F Yang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China.,Jiangxi Bolai Pharmacy Co., Ltd., Jiujiang, China
| | - F Yang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - G Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - W Shi
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - T Kong
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - P Yang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - D Bai
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - B Zhou
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
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Yang F, Yang F, Shi W, Si H, Kong T, Wang G, Zhang J. Development of a multiroute physiologically based pharmacokinetic model for orbifloxacin in rabbits. J Vet Pharmacol Ther 2018; 41:622-631. [DOI: 10.1111/jvp.12496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 01/28/2018] [Indexed: 12/25/2022]
Affiliation(s)
- F. Yang
- College of Animal Science and Technology; Henan University of Science and Technology; Luoyang China
| | - F. Yang
- College of Animal Science and Technology; Henan University of Science and Technology; Luoyang China
| | - W. Shi
- College of Animal Science and Technology; Henan University of Science and Technology; Luoyang China
| | - H. Si
- College of Animal Science and Technology; Guangxi University; Nanning China
| | - T. Kong
- College of Animal Science and Technology; Henan University of Science and Technology; Luoyang China
| | - G. Wang
- College of Animal Science and Technology; Henan University of Science and Technology; Luoyang China
| | - J. Zhang
- College of Animal Science and Technology; Henan University of Science and Technology; Luoyang China
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Wang GY, Zheng HH, Zhang KY, Yang F, Kong T, Zhou B, Jiang SX. The roles of cytochrome P450 and P-glycoprotein in the pharmacokinetics of florfenicol in chickens. Iran J Vet Res 2018; 19:9-14. [PMID: 29805456 PMCID: PMC5960766] [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] [Received: 06/28/2017] [Revised: 11/02/2017] [Accepted: 11/07/2017] [Indexed: 06/08/2023]
Abstract
The effects of three selective oral inhibitors, fluvoxamine (FLU), ketoconazole (KET), and verapamil (VER), on the pharmacokinetics (PK) of florfenicol (FFC) were investigated in chickens. The chickens were administered orally with saline solution (SAL), FLU (60 mg/kg), KET (25 mg/kg), or VER (9 mg/kg) for 7 consecutive days. Florfenicol was given to the chickens at a single dose of 30 mg/kg orally. Blood samples were collected from each chicken at 0 to 12 h post-administration of FFC. The plasma concentration of FFC was analyzed by high-performance liquid chromatography (HPLC). The AUC of FFC increased and the CLs of FFC decreased with oral co-administration of KET in chickens, and the Cmax of FFC increased with VER. While the AUC, the CLs and the Cmax of FFC were all invariable with FLU. These data suggested that CYP 3A played a key role in the PK of FFC in chickens, however, P-glycoprotein (P-gp) and CYP 1A did not. The results imply that the adverse drug-drug interaction may occur in the use of FFC if the co-administrated drugs are the substrates, inducers or inhibitors of CYP 3A or/and P-gp.
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Affiliation(s)
- G. Y. Wang
- Department of Basic Veterinary Medicine, Animal College of Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- These authors contributed equally to this work
| | - H. H. Zheng
- Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
- These authors contributed equally to this work
| | - K. Y. Zhang
- Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - F. Yang
- Department of Basic Veterinary Medicine, Animal College of Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - T. Kong
- Department of Basic Veterinary Medicine, Animal College of Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - B. Zhou
- Department of Basic Veterinary Medicine, Animal College of Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Sh. X. Jiang
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
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Chung SP, Yune HY, Park YS, You JS, Hong JH, Kong T, Park JW, Chung HS, Park I. Usefulness of mean platelet volume as a marker for clinical outcomes after out-of-hospital cardiac arrest: a retrospective cohort study. J Thromb Haemost 2016; 14:2036-2044. [PMID: 27437641 DOI: 10.1111/jth.13421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 11/08/2015] [Accepted: 06/27/2016] [Indexed: 01/06/2023]
Abstract
Essentials It is unknown whether mean platelet volume (MPV) estimates outcomes after cardiac arrest (CA). We investigated whether MPV was associated with 30-day neurologic outcome and mortality after CA. Elevated MPV at admission was associated with poor neurological outcomes and mortality at 30 days. Identifying levels of MPV is helpful for estimating disease severity among resuscitated patients. SUMMARY Background Whole-body ischemia followed by reperfusion during cardiac arrest and after return of spontaneous circulation (ROSC) triggers systemic sterile inflammatory responses, inducing a sepsis-like state during post-cardiac arrest syndrome. Activated platelets are enlarged, and contain vasoactive and prothrombic factors that aggravate systemic inflammation and endothelial dysfunction. Objectives To investigate whether mean platelet volume (MPV) is useful as a marker for early mortality and neurologic outcomes in patients who achieve ROSC after out-of-hospital cardiac arrest (OHCA). Methods OHCA records from the Emergency Department Cardiac Arrest Registry were retrospectively analyzed. Patients who survived for > 24 h after ROSC were included. We evaluated mortality and cerebral performance category scores after 30 days. Results We analyzed records from 184 patients with OHCA. Increased 30-day mortality among patients who achieved ROSC after OHCA was associated with MPV at admission (hazard ratio [HR] 1.36; 95% confidence interval [CI] 1.06-1.75). An elevated MPV at admission was also associated with poor neurologic outcomes (HR 1.28; 95% CI 1.06-1.55). Conclusions An elevated MPV was independently associated with increased 30-day mortality, with the highest discriminative value being obtained upon admission after OHCA. An elevated MPV on admission was associated with poor neurologic outcomes. High MPVs are helpful for estimating 30-day mortality and neurologic outcomes among patients who achieve ROSC after OHCA.
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Affiliation(s)
- S P Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - H Y Yune
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Park
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - J S You
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea.
| | - J H Hong
- Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - T Kong
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - J W Park
- Department of Emergency Medicine, Kosin University College of Medicine, Busan, Korea
| | - H S Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - I Park
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
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Narayanan A, Watson MD, Blake SF, Bruyant N, Drigo L, Chen YL, Prabhakaran D, Yan B, Felser C, Kong T, Canfield PC, Coldea AI. Linear magnetoresistance caused by mobility fluctuations in n-doped Cd(3)As(2). Phys Rev Lett 2015; 114:117201. [PMID: 25839304 DOI: 10.1103/physrevlett.114.117201] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Indexed: 06/04/2023]
Abstract
Cd(3)As(2) is a candidate three-dimensional Dirac semimetal which has exceedingly high mobility and nonsaturating linear magnetoresistance that may be relevant for future practical applications. We report magnetotransport and tunnel diode oscillation measurements on Cd(3)As(2), in magnetic fields up to 65 T and temperatures between 1.5 and 300 K. We find that the nonsaturating linear magnetoresistance persists up to 65 T and it is likely caused by disorder effects, as it scales with the high mobility rather than directly linked to Fermi surface changes even when approaching the quantum limit. From the observed quantum oscillations, we determine the bulk three-dimensional Fermi surface having signatures of Dirac behavior with a nontrivial Berry phase shift, very light effective quasiparticle masses, and clear deviations from the band-structure predictions. In very high fields we also detect signatures of large Zeeman spin splitting (g∼16).
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Affiliation(s)
- A Narayanan
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - M D Watson
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - S F Blake
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - N Bruyant
- Laboratoire National des Champs Magnetiques Intenses (CNRS), 31077 Toulouse, France
| | - L Drigo
- Laboratoire National des Champs Magnetiques Intenses (CNRS), 31077 Toulouse, France
| | - Y L Chen
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - D Prabhakaran
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - B Yan
- Max-Planck-Institut fur Chemische Physik fester Stoffe, 01187 Dresden, Germany
| | - C Felser
- Laboratoire National des Champs Magnetiques Intenses (CNRS), 31077 Toulouse, France
| | - T Kong
- Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
| | - P C Canfield
- Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
| | - A I Coldea
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
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Fröhlich S, Murphy N, Kong T, Ffrench-O’Carroll R, Conlon N, Ryan D, Boylan J. Alcoholic liver disease in the intensive care unit: Outcomes and predictors of prognosis. J Crit Care 2014; 29:1131.e7-1131.e13. [DOI: 10.1016/j.jcrc.2014.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 06/02/2014] [Accepted: 06/02/2014] [Indexed: 12/14/2022]
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Mathewson KE, Low KA, Schneider-Garces N, Chiarelli A, Tan CH, Kong T, Burton CR, Fletcher MA, Zimmerman B, Sutton BP, Maclin EL, Fabiani M, Gratton G. Retinotopic visual mapping of brain oxygenation and neuronal activity using simultaneous fast and slow near-infrared optical brain imaging in humans. J Vis 2014. [DOI: 10.1167/14.10.1420] [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: 11/24/2022] Open
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Kong T, Lee J, Paek J, Chang S, Chang K, Ryu H. Comparison of laparoscopic versus abdominal radical hysterectomy for bulky (≥3cm) FIGO stage IB and IIA cervical cancer. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.185] [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: 10/26/2022]
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Kong T, Son J, Paek J, Chang S, Chang K, Ryu H. Outcomes of cold knife conization according to the margin involvement in high-grade lesions and microinvasive squamous cell carcinoma of the uterine cervix. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.187] [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: 10/26/2022]
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Kong T, Li XB, Liu GW, Xie GH, Wang Z, Zhang ZG, Zhang Y, Sun J, Tang J. Preparation of specific monoclonal antibodies against chelated copper ions. Biol Trace Elem Res 2012; 145:388-95. [PMID: 21932043 DOI: 10.1007/s12011-011-9206-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 09/09/2011] [Indexed: 10/17/2022]
Abstract
Copper ions are too small to elicit an immune response. Therefore, copper was conjugated to carrier proteins using S-2-(4-isothiocyanatobenzyl)-1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid, a bifunctional chelator, to make artificial antigens for copper. Several mice were immunized, and monoclonal antibodies (MAbs) against chelated copper were produced. Spleen cells of immunized mice were fused with myeloma cells. The resulting hybridomas were screened using protein conjugates which were covalently bound to metal-free 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid (DOTA) or Cu-DOTA. Two hybridoma cell lines (F4 and B2) that produced MAbs with high selectivity and sensitivity were expanded for further study. Cross-reactivities with other metals were below 1%. These antibodies were used to construct competitive ELISAs for copper ions. The IC(50) for F4 and B2 were 0.39 and 1.66 mg/l, respectively. The detection range and the lowest detection limit for copper using the antibody F4 was 0.019-8.22 and 0.003 mg/l, respectively. Spike recovery studies in tap water showed that the most sensitive antibody could be used for copper detection in drinking water.
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Affiliation(s)
- T Kong
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, 70 Tianjin Road, Luoyang, Henan 471003, People's Republic of China
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Chang S, Bristow R, Kong T, Paek J, Ryu H, DiSaia P. A model for prediction of parametrial involvement and feasibility of less radical resection of parametrium in patients with FIGO stage IB1 cervical cancer. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.114] [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: 10/28/2022]
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35
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Xiao Z, Wu L, Mo H, Kong T. Increased T Cell Chemotaxis Response to Staphylococcus Enterotoxin B Mediated Human Endothelial Cell Damage In Vitro. Scand J Immunol 2012; 75:147-56. [DOI: 10.1111/j.1365-3083.2011.02638.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Na LX, Zhang YL, Li Y, Liu LY, Li R, Kong T, Sun CH. Curcumin improves insulin resistance in skeletal muscle of rats. Nutr Metab Cardiovasc Dis 2011; 21:526-533. [PMID: 20227862 DOI: 10.1016/j.numecd.2009.11.009] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 10/19/2009] [Accepted: 11/19/2009] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND AIMS Curcumin has been reported to lower plasma lipids and glucose in diabetic rats, and to decrease body weight in obese rats, which may partly be due to increased fatty acid oxidation and utilization in skeletal muscle. METHODS AND RESULTS Diabetic rats induced by high-fat diet plus streptozotocin (STZ, 30 mg/kg BW) were fed a diet containing 50, 150, or 250 mg/kg BW curcumin for 7 wk. Curcumin dose-dependently decreased plasma lipids and glucose and the dose 150 mg/kg BW appeared to be adequate to produce a significant effect. Curcumin supplementation reduced glucose and insulin tolerance measured as areas under the curve. L6 myotubes were treated with palmitate (0.25 mmol/L) in the presence of different levels of curcumin for 24 h in our in vitro experiment. Curcumin at 10 μmol/L was adequate to cause a significant increase in 2-deoxy-[(3)H]d-glucose uptake by L6 myotubes. Curcumin up-regulated expression of phosphorylated AMP-activated protein kinase (AMPK), CD36, and carnitine palmitoyl transferase 1, but down-regulated expression of pyruvate dehydrogenase 4 and phosphorylated glycogen synthase (GS) in both in vivo and in vitro studies. Moreover, curcumin increased phosphorylated acetyl COA carboxylase in L6 myotubes. The effects of curcumin on these enzymes except for GS were suppressed by AMPK inhibitor, Compound C. LKB1, an upstream kinase of AMPK, was activated by curcumin and inhibited by radicicol, an LKB1 destabilizer. CONCLUSION Curcumin improves muscular insulin resistance by increasing oxidation of fatty acid and glucose, which is, at least in part, mediated through LKB1-AMPK pathway.
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Affiliation(s)
- L-X Na
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin 150086, PR China
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37
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Kong T, Liu G, Li X, Wang Z, Zhang Z, Xie G, Zhang Y, Sun J, Xu C. Synthesis and identification of artificial antigens for cadmium and copper. Food Chem 2010. [DOI: 10.1016/j.foodchem.2010.05.087] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Cai K, Hu Y, Luo Z, Kong T, Lai M, Sui X, Wang Y, Yang L, Deng L. Cell-Specific Gene Transfection from a Gene-Functionalized Poly(d,l-lactic acid) Substrate Fabricated by the Layer-by-Layer Assembly Technique. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Cai K, Hu Y, Luo Z, Kong T, Lai M, Sui X, Wang Y, Yang L, Deng L. Cell‐Specific Gene Transfection from a Gene‐Functionalized Poly(
d,l
‐lactic acid) Substrate Fabricated by the Layer‐by‐Layer Assembly Technique. Angew Chem Int Ed Engl 2008; 47:7479-81. [DOI: 10.1002/anie.200800412] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kaiyong Cai
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Yan Hu
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Zhong Luo
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Ting Kong
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Min Lai
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Xiaojing Sui
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Yuanliang Wang
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Li Yang
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
| | - Linhong Deng
- College of Bioengineering, Chongqing University, Chongqing, 400044 (P. R. China), Fax: (+86) 23‐6511‐2619
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Miranda LP, Shao H, Williams J, Chen SY, Kong T, Garcia R, Chinn Y, Fraud N, O'Dwyer B, Ye J, Wilken J, Low DE, Cagle EN, Carnevali M, Lee A, Song D, Kung A, Bradburne JA, Paliard X, Kochendoerfer GG. A Chemical Approach to the Pharmaceutical Optimization of an Anti-HIV Protein. J Am Chem Soc 2007; 129:13153-9. [DOI: 10.1021/ja073982h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Les P. Miranda
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Haiyan Shao
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Jason Williams
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Shiah-Yun Chen
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Ting Kong
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Rod Garcia
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Yvonne Chinn
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Nathalie Fraud
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Bill O'Dwyer
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Jay Ye
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Jill Wilken
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Donald E. Low
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - E. Neil Cagle
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Maia Carnevali
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Alexander Lee
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Di Song
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Ada Kung
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - James A. Bradburne
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Xavier Paliard
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
| | - Gerd G. Kochendoerfer
- Contribution from Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, California 94080
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Shao H, Crnogorac MM, Kong T, Chen SY, Williams JM, Tack JM, Gueriguian V, Cagle EN, Carnevali M, Tumelty D, Paliard X, Miranda LP, Bradburne JA, Kochendoerfer GG. Site-Specific Polymer Attachment to a CCL-5 (RANTES) Analogue by Oxime Exchange. J Am Chem Soc 2005; 127:1350-1. [PMID: 15686348 DOI: 10.1021/ja043096w] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A synthetic strategy that allows for the site-specific attachment of polymers such as poly(ethylene glycol) (PEG) to protein pharmaceuticals is described. PEG was attached to a 67-amino acid fully synthetic CCL-5 (RANTES) analogue at its GAG binding site both to reduce aggregation and to increase the circulating lifetime. Effective protection of an Aoaa chemoselective linker during peptide assembly, total chemical protein synthesis, and protein folding was achieved with an isopropylidene group. Mild deprotection of the resulting folded synthetic protein and subsequent polymer attachment occur without interference with the native folded structure and activity.
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Affiliation(s)
- Haiyan Shao
- Gryphon Therapeutics, 600 Gateway Boulevard, South San Francisco, CA 94080, USA
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Reardon DB, Dent P, Wood SL, Kong T, Sturgill TW. Activation in vitro of somatostatin receptor subtypes 2, 3, or 4 stimulates protein tyrosine phosphatase activity in membranes from transfected Ras-transformed NIH 3T3 cells: coexpression with catalytically inactive SHP-2 blocks responsiveness. Mol Endocrinol 1997; 11:1062-9. [PMID: 9212054 DOI: 10.1210/mend.11.8.9960] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Somatostatin receptors (sstr) subtypes 1-5 were transiently expressed in NIH 3T3 cells stably transformed with Ha-Ras(G12V) to assess the ability of each receptor to stimulate protein tyrosine phosphatase (PTPase) activity in vitro. Treatment of membranes from sstr2-, sstr3-, or sstr4-expressing cells with somatostatin-14 plus guanyl-5'-yl imidodiphosphate (GMPPNP) increased PTPase activity, and this stimulation was pertussis toxin-sensitive. Somatostatin alone, GMPPNP alone, or somatostatin plus GDP were ineffective under these conditions. sstr1 and sstr5 failed to increase PTPase activity although both receptors were expressed, as assessed by appearance of high-affinity binding sites for [125I-Tyr11]somatostatin-14. Somatostatin plus GMPPNP stimulated PTPase activity in vitro when sstr2 was coexpressed with wild type PTP1B or a Cys to Ser (C/S), catalytically inactive PTP1B or with wild type SH2-domain containing PTPase SHP-2. However, coexpression with catalytically inactive C/S SHP-2 abrogated this response. Thus, three of the five cloned sstr's can couple to activate PTPase in this cellular background. Abrogation of the response by C/S SHP-2 strongly suggests, but does not prove, a role for SHP-2 in the mechanism.
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Affiliation(s)
- D B Reardon
- Center for Cell Signaling, Department of Internal Medicine, University of Virginia, Charlottesville 22908, USA
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Kong T, Steffens D. Bedeutung der Kalium-Verarmung in der Rhizosphäre und der Tonminerale für die Freisetzung von nichtaustauschbarem Kalium und dessen Bestimmung mit HCl. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/jpln.19891520401] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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