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Plotkowski A, Saleeby K, Fancher CM, Haley J, Madireddy G, An K, Kannan R, Feldhausen T, Lee Y, Yu D, Leach C, Vaughan J, Babu SS. Operando neutron diffraction reveals mechanisms for controlled strain evolution in 3D printing. Nat Commun 2023; 14:4950. [PMID: 37587109 PMCID: PMC10432395 DOI: 10.1038/s41467-023-40456-x] [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: 01/03/2023] [Accepted: 07/28/2023] [Indexed: 08/18/2023] Open
Abstract
Residual stresses affect the performance and reliability of most manufactured goods and are prevalent in casting, welding, and additive manufacturing (AM, 3D printing). Residual stresses are associated with plastic strain gradients accrued due to transient thermal stress. Complex thermal conditions in AM produce similarly complex residual stress patterns. However, measuring real-time effects of processing on stress evolution is not possible with conventional techniques. Here we use operando neutron diffraction to characterize transient phase transformations and lattice strain evolution during AM of a low-temperature transformation steel. Combining diffraction, infrared and simulation data reveals that elastic and plastic strain distributions are controlled by motion of the face-centered cubic and body-centered cubic phase boundary. Our results provide a new pathway to design residual stress states and property distributions within additively manufactured components. These findings will enable control of residual stress distributions for advantages such as improved fatigue life or resistance to stress-corrosion cracking.
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Affiliation(s)
- A Plotkowski
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
| | - K Saleeby
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - C M Fancher
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - J Haley
- Electrification and Energy Infrastructure Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - G Madireddy
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - K An
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - R Kannan
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - T Feldhausen
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Y Lee
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - D Yu
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - C Leach
- Electrification and Energy Infrastructure Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - J Vaughan
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - S S Babu
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
- Department of Mechanical, Aerospace, and Biomedical Engineering, The University of Tennessee - Knoxville, Knoxville, TN, 37996, USA
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Park KW, Kim J, Seo J, Moon S, Jeong K, An K. Entropic comparison of Landau-Zener and Demkov interactions in the phase space of a quadrupole billiard. Chaos 2022; 32:103101. [PMID: 36319274 DOI: 10.1063/5.0101495] [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: 06/01/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
We investigate two types of avoided crossings in a chaotic billiard within the framework of information theory. The Shannon entropy in the phase space for the Landau-Zener interaction increases as the center of the avoided crossing is approached, whereas for the Demkov interaction, the Shannon entropy decreases as the center of avoided crossing is passed by with an increase in the deformation parameter. This feature can provide a new indicator for scar formation. In addition, it is found that the Fisher information of the Landau-Zener interaction is significantly larger than that of the Demkov interaction.
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Affiliation(s)
- K-W Park
- Research Institute of Mathematics, Seoul National University, Seoul 08826, South Korea
| | - J Kim
- Department of Physics and Astronomy and Institute of Applied Physics, Seoul National University, Seoul 08826, South Korea
| | - J Seo
- Department of Physics and Astronomy and Institute of Applied Physics, Seoul National University, Seoul 08826, South Korea
| | - S Moon
- Faculty of Liberal Education, Seoul National University, Seoul 08826, South Korea
| | - K Jeong
- Research Institute of Mathematics, Seoul National University, Seoul 08826, South Korea
| | - K An
- Department of Physics and Astronomy and Institute of Applied Physics, Seoul National University, Seoul 08826, South Korea
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Sihota T, Chen Y, Nagelberg A, Chow J, Shi R, An K, Lockwood W. EP16.03-039 Characterizing SHPRH as a Novel Tumor Suppressor Gene in Lung Adenocarcinoma. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1100] [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]
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An K, Gu J. [Concept of lateral lymph nodes in rectal cancer and controversy over lateral lymph node dissection]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:694-698. [PMID: 35970803 DOI: 10.3760/cma.j.cn441530-20220725-00326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lateral lymph node (LLN) metastasis in locally advanced rectal cancer (LARC) is associated with patient prognosis. However, the role of lateral lymph node dissection (LLND) remains controversial. The concept of LLN and the exact definition of LLND have been inconsistently reported in the literatures. The treatment strategy for LARC has differed between the East and the West. The Japanese doctors advocates total mesorectal excision (TME) with LLND for LARC, but less neoadjuvant radiochemotherapy (NARC). European and Americans prefer NARC plus TME, and do not recommend LLND. So far, only the Japanese Statute of Colorectal Cancer has a clear definition of the concept of LLN and LLND. The use of TME plus LLND for LARC is not supported by high level evidences. In today's high-speed development of minimally invasive surgery, the proper selection of standardized surgical methods for LARC requires the joint efforts of scholars from the East and the West to conduct multicenter high-grade clinical trials to select the best treatment option for patients with LARC.
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Affiliation(s)
- K An
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing 100144,China
| | - J Gu
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing 100144,China Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing 100142, China
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Tam A, Kulkarni J, An K, Li L, Dorscheid DR, Singhera GK, Bernatchez P, Reid G, Chan K, Witzigmann D, Cullis PR, Sin DD, Lim CJ. Lipid nanoparticle formulations for optimal RNA-based topical delivery to murine airways. Eur J Pharm Sci 2022; 176:106234. [PMID: 35688311 DOI: 10.1016/j.ejps.2022.106234] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 01/10/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Lipid nanoparticles (LNP) have been successfully used as a platform technology for delivering nucleic acids to the liver. To broaden the application of LNPs in targeting non-hepatic tissues, we developed LNP-based RNA therapies (siRNA or mRNA) for the respiratory tract. Such optimized LNP systems could offer an early treatment strategy for viral respiratory tract infections such as COVID-19. METHODS We generated a small library of six LNP formulations with varying helper lipid compositions and characterized their hydrodynamic diameter, size distribution and cargo entrapment properties. Next, we screened these LNP formulations for particle uptake and evaluated their potential for transfecting mRNA encoding green fluorescence protein (GFP) or SARS-CoV2 nucleocapsid-GFP fusion reporter gene in a human airway epithelial cell line in vitro. Following LNP-siGFP delivery, GFP protein knockdown efficiency was assessed by flow cytometry to determine %GFP+ cells and median fluorescence intensity (MFI) for GFP. Finally, lead LNP candidates were validated in Friend leukemia virus B (FVB) male mice via intranasal delivery of an mRNA encoding luciferase, using in vivo bioluminescence imaging. RESULTS Dynamic light scattering revealed that all LNP formulations contained particles with an average diameter of <100 nm and a polydispersity index of <0.2. Human airway epithelial cell lines in culture internalized LNPs with differential GFP transfection efficiencies (73-97%). The lead formulation LNP6 entrapping GFP or Nuc-GFP mRNA demonstrated the highest transfection efficiency (97%). Administration of LNP-GFP siRNA resulted in a significant reduction of GFP protein expression. For in vivo studies, intranasal delivery of LNPs containing helper lipids (DSPC, DOPC, ESM or DOPS) with luciferase mRNA showed significant increase in luminescence expression in nasal cavity and lungs by at least 10 times above baseline control. CONCLUSION LNP formulations enable the delivery of RNA payloads into human airway epithelial cells, and in the murine respiratory system; they can be delivered to nasal mucosa and lower respiratory tract via intranasal delivery. The composition of helper lipids in LNPs crucially modulates transfection efficiencies in airway epithelia, highlighting their importance in effective delivery of therapeutic products for airways diseases.
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Affiliation(s)
- A Tam
- NanoVation Therapeutics Inc. Vancouver, British Columbia, Canada; Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, University of British Columbia Vancouver, British Columbia, Canada; University of British Columbia (UBC) Center for Heart Lung Innovation, St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - J Kulkarni
- NanoVation Therapeutics Inc. Vancouver, British Columbia, Canada; NanoMedicines Innovation Network, Vancouver, British Columbia, Canada; University of British Columbia (UBC), Department of Biochemistry and Molecular Biology, Vancouver, British Columbia, Canada
| | - K An
- NanoVation Therapeutics Inc. Vancouver, British Columbia, Canada; University of British Columbia (UBC), Department of Biochemistry and Molecular Biology, Vancouver, British Columbia, Canada
| | - L Li
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, University of British Columbia Vancouver, British Columbia, Canada
| | - D R Dorscheid
- University of British Columbia (UBC) Center for Heart Lung Innovation, St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - G K Singhera
- University of British Columbia (UBC) Center for Heart Lung Innovation, St. Paul's Hospital, Vancouver, British Columbia, Canada; Department of Medicine (Division of Respirology), UBC, Vancouver, British Columbia, Canada
| | - P Bernatchez
- University of British Columbia (UBC) Center for Heart Lung Innovation, St. Paul's Hospital, Vancouver, British Columbia, Canada; Department of Medicine (Division of Respirology), UBC, Vancouver, British Columbia, Canada; Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, 217-2176 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Gsd Reid
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, University of British Columbia Vancouver, British Columbia, Canada
| | - Kyt Chan
- NanoMedicines Innovation Network, Vancouver, British Columbia, Canada; University of British Columbia (UBC), Department of Biochemistry and Molecular Biology, Vancouver, British Columbia, Canada
| | - D Witzigmann
- NanoVation Therapeutics Inc. Vancouver, British Columbia, Canada; NanoMedicines Innovation Network, Vancouver, British Columbia, Canada; University of British Columbia (UBC), Department of Biochemistry and Molecular Biology, Vancouver, British Columbia, Canada
| | - P R Cullis
- NanoVation Therapeutics Inc. Vancouver, British Columbia, Canada; NanoMedicines Innovation Network, Vancouver, British Columbia, Canada; University of British Columbia (UBC), Department of Biochemistry and Molecular Biology, Vancouver, British Columbia, Canada
| | - D D Sin
- University of British Columbia (UBC) Center for Heart Lung Innovation, St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - C J Lim
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, University of British Columbia Vancouver, British Columbia, Canada.
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An K, De Mestral C, Tam D, Qiu F, Ouzounian M, Lindsay T, Wijeysundera H, Chung J. IMAGING SURVEILLANCE FOLLOWING ACUTE TYPE A AORTIC DISSECTION: A POPULATION-BASED COHORT STUDY. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.200] [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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Gu J, Lei F, Wang X, Huang W, He X, Hong Y, Zeng Q, Wang Y, Gao Q, Niu P, Huang D, Gao Z, Ding C, Zhai Z, An K, Chen H, Zhao X, Chen S, Bai Y. 458P Circulating tumor DNA analysis predicting recurrence risk in patients with stage I-III colorectal cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.979] [Citation(s) in RCA: 1] [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: 11/24/2022] Open
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Hutin A, Ricard-Hibon A, Briole N, Dupin A, Dagron C, Raphalen JH, Mungur A, An K, Carli P, Lamhaut L. First Description of a Helicopter-Borne ECPR Team for Remote Refractory Out-of-Hospital Cardiac Arrest. PREHOSP EMERG CARE 2021:1-5. [PMID: 33275477 DOI: 10.1080/10903127.2020.1859026] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/10/2020] [Accepted: 11/28/2020] [Indexed: 10/22/2022]
Abstract
Introduction: Access time to extracorporeal cardiopulmonary resuscitation (ECPR) refractory out of hospital cardiac arrest (OHCA) is a crucial factor. In our region, some patients are not eligible to this treatment due to the impossibility to reach the hospital with reasonable delay (ideally 60 min). In order to increase accessibility for patients far from ECPR centers, we developed a helicopter-borne ECPR-team which is sent out to the patient for ECPR implementation on the scene of the OHCA.Methods: We conducted a retrospective monocentric study to evaluate this strategy. The team is triggered by the local emergency medical service and heliborne on the site of the OHCA. All consecutive patients implemented with ECPR by our heliborne ECPR team from January 2014 to December 2017 were included. We analyzed usual CA characteristics, different times (no-flow, low-flow, time between OHCA and dispatch…), and patient outcome.Results: During this 4-year study period, 33 patients were included. Mean age was 43.9 years. Mean distance from the ECPR-team base to OHCA location was 41 km. Mean low-flow time was 110 minutes. Five patients survived with good neurological outcome; 6 patients developed brain death and became organ donors.Conclusion: These results show the possibility to make ECPR accessible for patients far from ECPR centers. Survival rate is non negligible, especially in the absence of therapeutic alternative. An earlier trigger of the ECPR-team could reduce the low-flow time and probably increase survival. This strategy improves equity of access to ECPR and needs to be confirmed by further studies.
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Affiliation(s)
- A Hutin
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - A Ricard-Hibon
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - N Briole
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - A Dupin
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - C Dagron
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - J H Raphalen
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - A Mungur
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - K An
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - P Carli
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
| | - L Lamhaut
- SAMU de Paris-ICU, Necker University Hospital, Assistance publique-Hopitaux de Paris, Paris, France (AH, CD, JHR, AM, KA, PC, LL); INSERM U955, Equipe 3, École Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Paris, France (AH); SAMU-SMUR 95, Centre Hospitalier René Dubois, Pontoise, France (AR-H); SAMU-SMUR 77, Centre Hospitalier Marc Jaquet, Melun, France (NB); SAMU-SMUR 91, Centre Hospitalier Sud Francilien, Corbeil-Essones, France (AD); René Descartes University, Paris, France (PC, LL); INSERM U970, Unité 4 SDEC, Paris, France (LL)
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Frank M, Nene SS, Chen Y, Gwalani B, Kautz EJ, Devaraj A, An K, Mishra RS. Correlating work hardening with co-activation of stacking fault strengthening and transformation in a high entropy alloy using in-situ neutron diffraction. Sci Rep 2020; 10:22263. [PMID: 33335268 PMCID: PMC7747568 DOI: 10.1038/s41598-020-79492-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022] Open
Abstract
Transformation induced plasticity (TRIP) leads to enhancements in ductility in low stacking fault energy (SFE) alloys, however to achieve an unconventional increase in strength simultaneously, there must be barriers to dislocation motion. While stacking faults (SFs) contribute to strengthening by impeding dislocation motion, the contribution of SF strengthening to work hardening during deformation is not well understood; as compared to dislocation slip, twinning induced plasticity (TWIP) and TRIP. Thus, we used in-situ neutron diffraction to correlate SF strengthening to work hardening behavior in a low SFE Fe40Mn20Cr15Co20Si5 (at%) high entropy alloy, SFE ~ 6.31 mJ m−2. Cooperative activation of multiple mechanisms was indicated by increases in SF strengthening and γ-f.c.c. → ε-h.c.p. transformation leading to a simultaneous increase in strength and ductility. The present study demonstrates the application of in-situ, neutron or X-ray, diffraction techniques to correlating SF strengthening to work hardening.
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Affiliation(s)
- M Frank
- Department of Materials Science and Engineering, University of North Texas, Denton, TX, 76207, USA
| | - S S Nene
- Department of Materials Science and Engineering, University of North Texas, Denton, TX, 76207, USA.,Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Jodhpur, 342037, India
| | - Y Chen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - B Gwalani
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - E J Kautz
- National Security Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - A Devaraj
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - K An
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - R S Mishra
- Department of Materials Science and Engineering, University of North Texas, Denton, TX, 76207, USA.
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Alraddadi H, Alsagheir A, Gao S, An K, Hronyecz H, Parry D, Whitlock R, Belley-Cote E. Infective endocarditis in patients who use IV drugs: a single centre cohort. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2030] [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: 11/14/2022] Open
Abstract
Abstract
Background
Managing endocarditis in intravenous drug use (IVDU) patients is challenging: unless patients successfully quit IVDU, the risk of re-infection is high. Clinicians often raise concerns with ethical and resource allocation principles when considering valve replacement surgery in this patient population. To help inform practice, we sought to determine the long-term outcomes of IVDU patients with endocarditis who underwent valve surgery in our center.
Method
After research ethics board approval, infective endocarditis cases managed surgically at our General Hospital between 2009 and 2018 were identified through the Cardiac Care Network. We reviewed patients' charts and included those with a history of IVDU in this study. We abstracted data on baseline characteristics, peri-operative course, short- and long-term outcomes. We report results using descriptive statistics.
Results
We identified 124 IVDU patients with surgically managed endocarditis. Mean age was 37 years (SD 11), 61% were females and 8% had redo surgery. During admission, 45% (n=56) of the patients had an embolic event: 63% pulmonary, 30% cerebral, 18% peripheral and 11% mesenteric. Causative organisms included Methicillin-Sensitive Staphylococcus Aureus (51%, n=63), Methicillin-Resistant Staphylococcus Aureus (15%, n=19), Streptococcus Viridans (2%, n=2), and others (31%, n=38). Emergency cardiac surgery was performed for 42% of patients (n=52). Most patients (84%) had single valve intervention: 53% tricuspid, 18% aortic and 13% mitral. Double valve interventions occurred in 15% (n=18). Overall, bioprosthetic replacement was most commonly chosen (79%, n=98). In-hospital mortality was 7% (n=8). Median length of stay in hospital was 13 days (IQR 8,21) and ICU 2 days (IQR 1,6). Mortality at longest available follow-up was 24% (n=30), with a median follow-up of 129 days (IQR 15,416). Valve reintervention rate was 11% (n=13) and readmission rate was 14% (n=17) at a median of 275 days (IQR 54,502).
Conclusion
Despite their critical condition, IVDU patients with endocarditis have good intra-hospital outcomes. Challenges occur after hospital discharge with loss of follow-up and high short-term mortality. IVDU relapse likely accounts for some of these issues. In-hospital and community comprehensive addiction management may improve these patients' outcomes beyond the surgical procedure.
Annual rate 2009–2018
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | | | - S Gao
- McMaster University, Hamilton, Canada
| | - K An
- University of Toronto, Toronto, Canada
| | | | - D Parry
- Otago Medical School, Dunedin, New Zealand
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Carmichael JR, Polsky Y, An K, Anovitz LM, Bingham P, Dessieux L, Ekici K, Frost M, Pemberton S. A high-pressure flow through test vessel for neutron imaging and neutron diffraction-based strain measurement of geological materials. Rev Sci Instrum 2020; 91:084502. [PMID: 32872895 DOI: 10.1063/5.0013433] [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: 05/11/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Neutron scattering and neutron imaging have emerged as powerful methods for experimentally investigating material deformation and fluid flow in the interior of otherwise inaccessible or opaque structures. This paper describes the design and provides example uses of a pressure cell developed for investigating such behaviors within geological materials. The cell can accommodate cylindrical samples with diameters up to 38.1 mm and lengths up to 154 mm. Ports in the cell and a pressure isolating sleeve around the sample allow the independent application of confining pressure up to 69 MPa and axial pressure up to 34.5 MPa. Two material versions of the cell have been manufactured and used to date. An aluminum version is typically used for temperatures below 40 °C, because of its relative transparency to neutrons, while a titanium version, which is comparatively more neutron attenuating, is used for experiments requiring triaxial pressurization under conditions up to 350 °C. The pressure cells were commissioned at the VULCAN engineering diffractometer at the Oak Ridge National Laboratory (ORNL), Spallation Neutron Source, and have since been used at the ORNL high flux isotope reactor CG1-D imaging beamline, National Institute of Standard and Technology (NIST) BT-2, and NIST NG6 imaging beamlines.
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Affiliation(s)
- J R Carmichael
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Y Polsky
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - K An
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - L M Anovitz
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - P Bingham
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Luc Dessieux
- University of Tennessee Knoxville, Knoxville, Tennessee 37996, USA
| | - K Ekici
- University of Tennessee Knoxville, Knoxville, Tennessee 37996, USA
| | - M Frost
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Pemberton
- University of Tennessee Knoxville, Knoxville, Tennessee 37996, USA
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Choi J, Lee T, Cho J, Servante EK, Pucker B, Summers W, Bowden S, Rahimi M, An K, An G, Bouwmeester HJ, Wallington EJ, Oldroyd G, Paszkowski U. The negative regulator SMAX1 controls mycorrhizal symbiosis and strigolactone biosynthesis in rice. Nat Commun 2020; 11:2114. [PMID: 32355217 PMCID: PMC7193599 DOI: 10.1038/s41467-020-16021-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [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: 12/23/2019] [Accepted: 04/08/2020] [Indexed: 12/17/2022] Open
Abstract
Most plants associate with beneficial arbuscular mycorrhizal (AM) fungi that facilitate soil nutrient acquisition. Prior to contact, partner recognition triggers reciprocal genetic remodelling to enable colonisation. The plant Dwarf14-Like (D14L) receptor conditions pre-symbiotic perception of AM fungi, and also detects the smoke constituent karrikin. D14L-dependent signalling mechanisms, underpinning AM symbiosis are unknown. Here, we present the identification of a negative regulator from rice, which operates downstream of the D14L receptor, corresponding to the homologue of the Arabidopsis thaliana Suppressor of MAX2-1 (AtSMAX1) that functions in karrikin signalling. We demonstrate that rice SMAX1 is a suppressor of AM symbiosis, negatively regulating fungal colonisation and transcription of crucial signalling components and conserved symbiosis genes. Similarly, rice SMAX1 negatively controls strigolactone biosynthesis, demonstrating an unexpected crosstalk between the strigolactone and karrikin signalling pathways. We conclude that removal of SMAX1, resulting from D14L signalling activation, de-represses essential symbiotic programmes and increases strigolactone hormone production. Signaling via the D14L karrikin receptor conditions rice roots for association with arbuscular mycorrhizal fungi. Here, Choi et al. show that SMAX1, a rice homolog of an Arabidopsis repressor of karrikin signaling, acts downstream of D14L to suppress mycorrhizal symbiosis and strigolactone biosynthesis.
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Affiliation(s)
- Jeongmin Choi
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK.
| | - Tak Lee
- Sainsbury Laboratory, University of Cambridge, Bateman Street, Cambridge, CB2 1LR, UK
| | - Jungnam Cho
- Sainsbury Laboratory, University of Cambridge, Bateman Street, Cambridge, CB2 1LR, UK.,CAS-JIC Centre of Excellence for Plant and Microbial Science, 200032, Shanghai, China
| | - Emily K Servante
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Boas Pucker
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK.,Center for Biotechnology, Bielefeld University, Sequenz 1, 33615, Bielefeld, Germany
| | - William Summers
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Sarah Bowden
- The John Bingham Laboratory, NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK
| | - Mehran Rahimi
- Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Kyungsook An
- Crop Biotech Institute, Kyung Hee University, Yongjin-si, 446-701, South Korea
| | - Gynheung An
- Crop Biotech Institute, Kyung Hee University, Yongjin-si, 446-701, South Korea
| | - Harro J Bouwmeester
- Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Emma J Wallington
- The John Bingham Laboratory, NIAB, Huntingdon Road, Cambridge, CB3 0LE, UK
| | - Giles Oldroyd
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK.,Sainsbury Laboratory, University of Cambridge, Bateman Street, Cambridge, CB2 1LR, UK
| | - Uta Paszkowski
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK.
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13
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An K, Bai J, Gu HB, Chen HL, Li BR, Ning BT, Wang Y, Qian J. [Whole lung lavage in an infant with pulmonary alveolar proteinosis and literature review]. Zhonghua Er Ke Za Zhi 2020; 58:46-50. [PMID: 31905476 DOI: 10.3760/cma.j.issn.0578-1310.2020.01.011] [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 investigate the safety, feasibility and operation key points of whole lung lavage in infants with pulmonary alveolar proteinosis. Methods: The clinical manifestations, genetic screening, therapeutic interventions and outcome of an infant with pulmonary alveolar proteinosis complicated with respiratory failure who received whole lung lavage in November 2018 in Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine were reported. Websites including PubMed, Springer Link, China National Knowledge Infrastructure (CNKI), Weipu Database, and Wanfang Database were searched using the key words of "whole lung lavage" "pediatric" and "pulmonary alveolar proteinosis" for articles published from their establishments to April 2019. Relevant literature was reviewed. Results: A 3-month-old boy had experienced cough, shortness of breath and cyanosis for 1 week prior to admission to pediatric intensive care unit. Physical examination showed hepatosplenomegaly. Complete blood cell count showed mild anemia (hemoglobin 96 g/L) and normal white blood cells. The patient had normal C-reactive protein and normal blood platelet. Biochemical panel showed hypoalbuminemia (31 g/L), mildly elevated glutamic oxaloacetic transaminase (115 U/L) and blood ammonia (165 μmol/L), extremely elevated lactate dehydrogenase (>6 600 U/L) and hyperferritinemia (>4 500 μg/L). Chest computed tomography (CT) revealed decreased transmittance of both lungs, patchy high density shadow and ground glass opacity. Genetic testing revealed a mutation of c.625+1G>A in SLC7A7. Schiff reaction (PAS staining) in bronchoalveolar lavage fluid was positive. The patient was diagnosed with severe pneumonia, respiratory failure, lysinuria urinary protein intolerance, and pulmonary alveolar proteinosis. The patient received sequential unilateral whole lung lavage in 2 days and was successfully weaned from ventilator. He was discharged home breathing room air. Eleven articles (11 in English and non in Chinese) were reviewed. Twenty-one patients were included. After whole lung lavage, 76% (16/21) of the patients had improvement in respiratory function. Conclusions: Whole lung lavage can effectively improve respiratory failure caused by pulmonary alveolar proteinosis in infant patients. The procedure is feasible and safe.
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Affiliation(s)
- K An
- Department of Pediatric Intensive Care Unit, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - J Bai
- Department of Anesthesiology, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - H B Gu
- Department of Anesthesiology, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - H L Chen
- Department of Anesthesiology, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - B R Li
- Department of Pediatric Intensive Care Unit, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - B T Ning
- Department of Pediatric Intensive Care Unit, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - Y Wang
- Department of Pediatric Intensive Care Unit, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - J Qian
- Department of Pediatric Intensive Care Unit, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
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An K, Liu QY, Wang TT, Ni HD, He QL, Yao M, Chen YJ, Chen GD. [Relationship between expression of high-mobility group box-1 and inflammatory cytokines in patients with bone cancer pain]. Zhonghua Yi Xue Za Zhi 2019; 99:1293-1297. [PMID: 31091574 DOI: 10.3760/cma.j.issn.0376-2491.2019.17.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 investigate the change and relationship between serum high-mobility group box-1(HMGB1) and related inflammatory cytokines level in patients suffer with bone metastatic pain. Methods: Collection of the bone cancer pain patients who received analgesic therapy the department of pain in The First Affiliated Hospital of Jiaxing University from November 2016 to August 2016. Serum concentration of HMGB1, the Receptor of Advanced Glycation Endproducts (RAGE), monocyte chemotactic protein-1(MCP-1), tumor necrosis factor -α (TNF-α), interleukin-1β (IL-1β), interleukin-10 (IL-10), interleukin-13 (IL-13), and transforming growth factor-β (TGF-β) levels were determined in 15 healthy individuals as healthy donor and 15 patients with bone metastatic pain by enzyme-linked immunosorbent (ELISA) . The healthy individuals and patients with bone metastatic pain were collected before treatment and on 7 d after the treatment. Results: The serum concentration of HMGB1 and RAGE were significantly increased in tumorous group compared with healthy group[(8.8±2.3) vs (1.9±1.1) μg/L,(231±16) vs (46±20) ng/L); t=7.10,12.44, both P<0.05], then decreased after analgesic therapy [(4.77±1.36) μg/L, (129.80±29.32) ng/L, t=7.10, 12.44, both P<0.05]. The serum concentration of proinflammatory cytokines such as MCP-1, TNF-α, and IL-1β were significantly increased in tumorous group when compared with healthy group, and decreased after analgesic therapy (all P<0.05). The expression of anti-inflammatory cytokines such as IL-10, IL-13, and TGF-β were significantly increased in tumorous group when compared with healthy group, and decreased after analgesic therapy (all P<0.05).Compared with healthy group, the levels of MCP-1/IL-10, MCP-1/IL-13, MCP-1/TGF-β, TNF-α/IL-10, TNF-α/IL-13, TNF-α/TGF-β, IL-1β/IL-10, IL-1β/IL-13, IL-1β/TGF-β were significantly increased in tumorous group (all P<0.05). Conclusion: HMGB1 may adjust the proinflammatory-anti-inflammatory system homeostasis to participate in the development of bone metastatic pain.
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Affiliation(s)
- K An
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
| | - Q Y Liu
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
| | - T T Wang
- the Second Clinical Medical College, Zhejiang Chinese Medicine University, Hangzhou 310051, China
| | - H D Ni
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
| | - Q L He
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
| | - M Yao
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
| | - Y J Chen
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
| | - G D Chen
- Department of Anesthesiology and Pain Research Center, the First Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
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15
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Park I, Park C, Jang W, Yang H, An K, Kwon Y, Lee K, Sim S, Kong S. Molecular tumor board (MTB): Development of clinical pathways for precision medicine. Experiences of center for breast cancer at national cancer center, Korea. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy428.013] [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: 11/13/2022] Open
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16
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An K, Belley-Côté E, Um K, Gupta S, McClure G, Jaffer I, Pandey A, van der Wall S, Whitlock R. ANTICOAGULATION VERSUS ANTIPLATELET THERAPY IN ADULT PATIENTS UNDERGOING A BIOPROSTHETIC AORTIC VALVE REPLACEMENT: A SYSTEMATIC REVIEW AND META-ANALYSIS. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.292] [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] Open
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17
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Calder S, An K, Boehler R, Dela Cruz CR, Frontzek MD, Guthrie M, Haberl B, Huq A, Kimber SAJ, Liu J, Molaison JJ, Neuefeind J, Page K, Dos Santos AM, Taddei KM, Tulk C, Tucker MG. A suite-level review of the neutron powder diffraction instruments at Oak Ridge National Laboratory. Rev Sci Instrum 2018; 89:092701. [PMID: 30278771 DOI: 10.1063/1.5033906] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/19/2018] [Indexed: 06/08/2023]
Abstract
The suite of neutron powder diffractometers at Oak Ridge National Laboratory (ORNL) utilizes the distinct characteristics of the Spallation Neutron Source and High Flux Isotope Reactor to enable the measurements of powder samples over an unparalleled regime at a single laboratory. Full refinements over large Q ranges, total scattering methods, fast measurements under changing conditions, and a wide array of sample environments are available. This article provides a brief overview of each powder instrument at ORNL and details the complementarity across the suite. Future directions for the powder suite, including upgrades and new instruments, are also discussed.
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Affiliation(s)
- S Calder
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - K An
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - R Boehler
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - C R Dela Cruz
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - M D Frontzek
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - M Guthrie
- European Spallation Source, Lund 221 00, Sweden
| | - B Haberl
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - A Huq
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - S A J Kimber
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - J Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - J J Molaison
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - J Neuefeind
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - K Page
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - A M Dos Santos
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - K M Taddei
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - C Tulk
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
| | - M G Tucker
- Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831, USA
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18
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Zhu CY, He CJ, Yao M, Xu LS, An K, Liu QY, Chen YJ, He QL, Huang B, Zhou XY. [Relationship between C-C chemokine receptor type 2 and P38 mitogen-activated protein kinase signaling pathway in the spinal cord of rats with bone cancer pain]. Zhonghua Yi Xue Za Zhi 2018; 98:289-293. [PMID: 29397616 DOI: 10.3760/cma.j.issn.0376-2491.2018.04.010] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To investigate the relationship between C-C chemokine receptor type 2(CCR2) and P38 mitogen-activated protein kinase (P38MAPK) signaling pathway in the spinal cord of rats and further clarify the mechanism of bone cancer pain (BCP). Methods: A total of 92 healthy female SD rats, of which 60 were subjected to behavioral tests using a ciliary mechanical stimulation needle. SD rats were randomly divided into six groups: sham operation group (group S), bone cancer pain group (group B), sham operation + DMSO solvent group (group SD), bone cancer pain + DMSO solvent group (group BD), sham operation + RS102895 CCR2 inhibitor group (group SR), bone cancer pain + RS102895 CCR2 inhibitor group (group BR), and Von Frey was used in the behavioral test. Another 32 SD rats were randomly divided into the following 8 groups (n=4): sham operation group (group S), bone cancer pain 5 d group (group B5), bone cancer pain 9 d group (group B9), bone cancer pain 14 d group (group B14), bone cancer pain + DMSO solvent group (group BD), bone cancer pain + RS102895 CCR2 inhibitor 0.5 h group (group BR0.5 h), bone cancer pain + RS102895 CCR2 inhibitor 4 h group (group BR4 h), bone cancer pain + RS102895 CCR2 inhibitor 12 h group (group BR12 h). Western blot was used to detect the expression of P38, p-P38 and CCR2 in spinal cord of rats. Results: At day 5, 7, 9, 14, 21 post-injection, mechanical withdrawal thresholds of group S were(30.9±1.5), (31.9±1.2), (32.0±1.1), (31.6±1.5), (32.2±1.4)g respectively, the mechanical withdrawal thresholds of group B were( 26.4±0.7), (24.4±0.8), (21.4±0.8), (13.5±0.4), (9.9±0.2)g respectively, the mechanical withdrawal thresholds in group B decreased obviously versus group S, and the differences were statistically significant(t=-13.177, -16.660, -23.778, -35.574, -48.401, all P<0.01). At day 9 post-injection, the mechanical withdrawal thresholds in SD, BD, SR and BR groups were (32.4±1.7), (19.4±1.1), (32.1±1.3), (26.3±1.0) g respectively, the difference was statistically significant (F=224.681, P<0.01), and the mechanical withdrawal thresholds in group BD decreased obviously versus group SD, while the mechanical withdrawal thresholds in group BR increased obviously versus group BD. The expression levels of p-P38 in spinal cord of group S, group B5, group B9 and group B14 were(0.08±0.03), (0.20±0.05), (0.40±0.17), (0.65±0.14)respectively, the expression levels of CCR2 were(0.08±0.04), (0.18±0.05), (0.30±0.09), (0.58±0.07)respectively, the difference was statistically significant(F=19.123, 40.746, all P<0.01), and the expression of p-P38 and CCR2 in group B9 were showed a significant up-regulation versus group S. The expression levels of p-P38 in spinal cord of group BD, group BR0.5 h, group BR4 h and group BR12 h were (0.57±0.06), (0.17±0.11), (0.03±0.01), (0.25±0.11)respectively, and the difference was statistically significant(F=29.582, P<0.01). The expression of p-P38 in group BR0.5 h, BR4 h, BR12 h showed a significant down-regulation versus group BD. Conclusion: CCR2 in the spinal cord may be involved in the development of bone cancer pain by activating P38MAPK signaling pathway in rats.
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Affiliation(s)
- C Y Zhu
- Department of Anesthesiology, Bengbu Medical College, Bengbu 233030, China
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19
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Liu QY, Huang B, Chen YJ, Yao M, Zhang L, Fei Y, Xie KY, An K, Zhu CY. [Prevention and treatment of Horner syndrome in treatment of head and face hyperhidrosis by thoracic sympathetic nerve modulation]. Zhonghua Yi Xue Za Zhi 2017; 97:3624-3627. [PMID: 29275604 DOI: 10.3760/cma.j.issn.0376-2491.2017.46.005] [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: By summarize the Prevention and Treatment of Horner Syndrome of CT-guided thoracic sympathetic nerve modulation in the treatment of head and face Hyperhidrosis, reduce the occurrence of the complications. Methods: A retrospective analysis was made on 116 patients of CT-guided thoracic sympathetic nerve modulation in the treatment of head and face Hyperhidrosis in The First Hospital of Jiaxing from January 2010 to December 2016. Analysis the reasons of Horner syndrome and external management to sum up the corresponding prevention and treatment measures. Results: Under the guidance of CT positioning, 116 patients were successfully punctured to the intended target (both sides of the R3 above the rib head), after injection of local anesthetic plus contrast agent, CT scan showed there are 39 sides of the liquid parallel to the outside of pleural (26 sides) or over (13 sides) R1 above the rib head. CT scan again after the injection of anhydrous alcohol, there are 43 sides of the liquid parallel to the outside of pleural (24 sides) or over (19 sides) R1above the rib head.After the operation, 22 sides appeared Horner syndrome, 19 of which immediately give physiological saline 5 ml into the ipsilateral Satellite ganglion.Within 2 hours Horner's syndrome completely disappeared, while 3 cases were not treated, Horner syndrome lasts for 3 months to 2 years. Conclusion: The incidence of Horner syndrome relatively high during the CT-guided thoracic sympathetic nerve modulation to treatment of head and face Hyperhidrosis. Injecting 5 ml physiological saline into the ipsilateral Satellite ganglion immediately can completely eliminate this common complications.
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Affiliation(s)
- Q Y Liu
- Bengbu Medical College Graduate Department, Bengbu 233030, China
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Gupta S, Belley-Cote E, Sarkaria A, Pandey A, McClure G, Jaffer I, Spence J, An K, Panchal P, Devereaux K, Willingstorfer J, Eikelboom J, Whitlock R. 2051A meta-analysis of INR targets for mechanical heart valves: we need new evidence. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.2051] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- S. Gupta
- McMaster University, Department of Cardiac Surgery, Hamilton, Canada
| | - E. Belley-Cote
- McMaster University, Department of Medicine, Hamilton, Canada
| | - A. Sarkaria
- Queen's University, School of Medicine, Kingston, Canada
| | - A. Pandey
- Population Health Research Institute, Hamilton, Canada
| | - G. McClure
- McMaster University, Department of Clinical Epidemiology and Biostatistics, Hamilton, Canada
| | - I. Jaffer
- McMaster University, Department of Cardiac Surgery, Hamilton, Canada
| | - J. Spence
- Population Health Research Institute, Hamilton, Canada
| | - K. An
- McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Canada
| | | | - K. Devereaux
- Population Health Research Institute, Hamilton, Canada
| | | | - J. Eikelboom
- McMaster University, Hamilton Health Sciences, Hamilton, Canada
| | - R. Whitlock
- Population Health Research Institute, Hamilton, Canada
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Nadal M, Sawers R, Naseem S, Bassin B, Kulicke C, Sharman A, An G, An K, Ahern KR, Romag A, Brutnell TP, Gutjahr C, Geldner N, Roux C, Martinoia E, Konopka JB, Paszkowski U. An N-acetylglucosamine transporter required for arbuscular mycorrhizal symbioses in rice and maize. Nat Plants 2017; 3:17073. [PMID: 28548655 PMCID: PMC5685555 DOI: 10.1038/nplants.2017.73] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 04/25/2017] [Indexed: 05/20/2023]
Abstract
Most terrestrial plants, including crops, engage in beneficial interactions with arbuscular mycorrhizal fungi. Vital to the association is mutual recognition involving the release of diffusible signals into the rhizosphere. Previously, we identified the maize no perception 1 (nope1) mutant to be defective in early signalling. Here, we report cloning of ZmNope1 on the basis of synteny with rice. NOPE1 encodes a functional homologue of the Candida albicans N-acetylglucosamine (GlcNAc) transporter NGT1, and represents the first plasma membrane GlcNAc transporter identified from plants. In C. albicans, exposure to GlcNAc activates cell signalling and virulence. Similarly, in Rhizophagus irregularis treatment with rice wild-type but not nope1 root exudates induced transcriptome changes associated with signalling function, suggesting a requirement of NOPE1 function for presymbiotic fungal reprogramming.
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Affiliation(s)
- Marina Nadal
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Ruairidh Sawers
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Shamoon Naseem
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, NY 11794-5222, USA
| | - Barbara Bassin
- Institute of Plant Biology, University of Zurich, 8008 Zurich, Switzerland
| | - Corinna Kulicke
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Abigail Sharman
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Gynheung An
- Crop Biotech Institute and Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - Kyungsook An
- Crop Biotech Institute and Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - Kevin R. Ahern
- Boyce Thompson Institute for Plant Research, Ithaca, New York 14853, USA
| | - Amanda Romag
- Boyce Thompson Institute for Plant Research, Ithaca, New York 14853, USA
| | - Thomas P. Brutnell
- Boyce Thompson Institute for Plant Research, Ithaca, New York 14853, USA
| | - Caroline Gutjahr
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Niko Geldner
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Christophe Roux
- Université de Toulouse, UPS, UMR5546, Laboratoire de recherche en Sciences Végétales, BP 42617, F-31326 Castanet-Tolosan CEDEX, France
| | - Enrico Martinoia
- Institute of Plant Biology, University of Zurich, 8008 Zurich, Switzerland
| | - James B. Konopka
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, NY 11794-5222, USA
| | - Uta Paszkowski
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland
- to whom correspondence should be addressed: Uta Paszkowski,
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22
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Si L, Chen J, Huang X, Gong H, Luo J, Hou Q, Zhou T, Lu T, Zhu J, Shangguan Y, Chen E, Gong C, Zhao Q, Jing Y, Zhao Y, Li Y, Cui L, Fan D, Lu Y, Weng Q, Wang Y, Zhan Q, Liu K, Wei X, An K, An G, Han B. OsSPL13 controls grain size in cultivated rice. Nat Genet 2016. [PMID: 26950093 DOI: 10.1038/ng3518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2023]
Abstract
Although genetic diversity has a cardinal role in domestication, abundant natural allelic variations across the rice genome that cause agronomically important differences between diverse varieties have not been fully explored. Here we implement an approach integrating genome-wide association testing with functional analysis on grain size in a diverse rice population. We report that a major quantitative trait locus, GLW7, encoding the plant-specific transcription factor OsSPL13, positively regulates cell size in the grain hull, resulting in enhanced rice grain length and yield. We determine that a tandem-repeat sequence in the 5' UTR of OsSPL13 alters its expression by affecting transcription and translation and that high expression of OsSPL13 is associated with large grains in tropical japonica rice. Further analysis indicates that the large-grain allele of GLW7 in tropical japonica rice was introgressed from indica varieties under artificial selection. Our study demonstrates that new genes can be effectively identified on the basis of genome-wide association data.
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Affiliation(s)
- Lizhen Si
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jiaying Chen
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xuehui Huang
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Hao Gong
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jianghong Luo
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qingqing Hou
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Taoying Zhou
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Tingting Lu
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jingjie Zhu
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yingying Shangguan
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Erwang Chen
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Chengxiang Gong
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qiang Zhao
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yufeng Jing
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yan Zhao
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yan Li
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Lingling Cui
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Danlin Fan
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yiqi Lu
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qijun Weng
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yongchun Wang
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qilin Zhan
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Kunyan Liu
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xinghua Wei
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Kyungsook An
- Crop Biotech Institute, Kyung Hee University, Yongin, Republic of Korea
| | - Gynheung An
- Crop Biotech Institute, Kyung Hee University, Yongin, Republic of Korea
| | - Bin Han
- National Center for Gene Research, Chinese Academy of Sciences Center for Excellence of Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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23
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Jouffroy R, Lamhaut L, Guyard A, Phillipe P, Deluze T, Jaffry M, Dagron C, Bourgoin W, Orsini JP, An K, Jouven X, Spaulding C, Carli P. Base excess and lactate as prognostic indicators for patients treated by extra corporeal life support after out hospital cardiac arrest due to acute coronary syndrome. Resuscitation 2015; 85:1764-8. [PMID: 25447431 DOI: 10.1016/j.resuscitation.2014.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 10/01/2014] [Accepted: 10/13/2014] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To examine whether values of arterial base excess or lactate taken 3 h after starting ECLS indicate poor prognosis and if this can be used as a screening tool to follow Extra Corporeal Life Support after Out Hospital Cardiac Arrest due to acute coronary syndrome. DESIGN Single Centre retrospective observational study. SETTING University teaching hospital general adult intensive care unit. PATIENTS 15 consecutive patients admitted to the intensive care unit after refractory Out Hospital Cardiac Arrest due to acute coronary syndrome treated by Extra Corporeal Life Support. INTERVENTIONS Arterial base excess and lactate concentrations were measured immediately after starting ECLS and every 3 h after. RESULTS Both base excess and arterial lactate measured 3 h after starting ECLS effectively predict multi-organ failure occurrence and mortality in the following 21 h (area under the curve on receiver operating characteristic analysis of 0.97, 0.95 respectively). The best predictive values were obtained with a base excess level measured 3 h after starting ECLS of less than -10 mmol/l and lactate concentrations greater than 12 mmol/l. The combination of these two markers measured 3 h after starting ECLS predicted multiorgan failure occurrence and mortality in the following 21 h with a sensitivity of 70% and a specificity of 100%. CONCLUSIONS Combination of base excess and lactate, measured 3 h after starting ECLS, can be used to predict multiorgan failure occurrence and mortality in the following 21 h in patients admitted to an intensive care unit for refractory Out Hospital Cardiac Arrest due to acute coronary syndrome treated by Extra Corporeal Life Support. These parameters can be obtained simply and rapidly and help in the decision process to continue ECLS for refractory CA.
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24
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An K, Jang I, Choi DS, Jost-Brinkmann PG, Cha BK. Identification of a stable reference area for superimposing mandibular digital models. J Orofac Orthop 2015; 76:508-19. [DOI: 10.1007/s00056-015-0310-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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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25
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Stoica GM, Stoica AD, An K, Ma D, Vogel SC, Carpenter JS, Wang XL. Extracting grain-orientation-dependent data fromin situtime-of-flight neutron diffraction. I. Inverse pole figures. J Appl Crystallogr 2014. [DOI: 10.1107/s1600576714023036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The problem of calculating the inverse pole figure (IPF) is analyzed from the perspective of the application of time-of flight neutron diffraction toin situmonitoring of the thermomechanical behavior of engineering materials. On the basis of a quasi-Monte Carlo (QMC) method, a consistent set of grain orientations is generated and used to compute the weighting factors for IPF normalization. The weighting factors are instrument dependent and were calculated for the engineering materials diffractometer VULCAN (Spallation Neutron Source, Oak Ridge National Laboratory). The QMC method is applied to face-centered cubic structures and can be easily extended to other crystallographic symmetries. Examples include 316LN stainless steelin situloaded in tension at room temperature and an Al–2%Mg alloy, substantially deformed by cold rolling andin situannealed up to 653 K.
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26
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Benafan O, Padula SA, Skorpenske HD, An K, Vaidyanathan R. Design and implementation of a multiaxial loading capability during heating on an engineering neutron diffractometer. Rev Sci Instrum 2014; 85:103901. [PMID: 25362410 DOI: 10.1063/1.4896042] [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: 06/04/2023]
Abstract
A gripping capability was designed, implemented, and tested for in situ neutron diffraction measurements during multiaxial loading and heating on the VULCAN engineering materials diffractometer at the spallation neutron source at Oak Ridge National Laboratory. The proposed capability allowed for the acquisition of neutron spectra during tension, compression, torsion, and/or complex loading paths at elevated temperatures. The design consisted of age-hardened, Inconel(®) 718 grips with direct attachment to the existing MTS load frame having axial and torsional capacities of 100 kN and 400 N·m, respectively. Internal cooling passages were incorporated into the gripping system for fast cooling rates during high temperature experiments up to ∼1000 K. The specimen mounting couplers combined a threaded and hexed end-connection for ease of sample installation/removal without introducing any unwanted loads. Instrumentation of this capability is documented in this work along with various performance parameters. The gripping system was utilized to investigate deformation in NiTi shape memory alloys under various loading/control modes (e.g., isothermal, isobaric, and cyclic), and preliminary results are presented. The measurements facilitated the quantification of the texture, internal strain, and phase fraction evolution in NiTi shape memory alloys under various loading/control modes.
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Affiliation(s)
- O Benafan
- NASA Glenn Research Center, Structures and Materials Division, Cleveland, Ohio 44135, USA
| | - S A Padula
- NASA Glenn Research Center, Structures and Materials Division, Cleveland, Ohio 44135, USA
| | - H D Skorpenske
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - K An
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - R Vaidyanathan
- Advanced Materials Processing and Analysis Center, Materials Science and Engineering Department, University of Central Florida, Orlando, Florida 32816, USA
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27
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An K, Baird A, Zakzanis K. C-33 * Neuropsychological and Psychological Outcome following Mild Complicated to Severe Traumatic Brain Injury in Older Adults in a Litigation Setting. Arch Clin Neuropsychol 2014. [DOI: 10.1093/arclin/acu038.214] [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: 11/13/2022] Open
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28
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An K, Baird A, Zakzanis K. C-34 * Does a Dose-Response Relationship Exist between Traumatic Brain Injury Severity and Outcome in a Compensation Setting? Arch Clin Neuropsychol 2014. [DOI: 10.1093/arclin/acu038.215] [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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29
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Shen K, Hu J, Wu B, An K, Zhang J, Liu J, Zhang R. Competitive Interactions between Immature Stages of Bactrocera cucurbitae (Coquillett) and Bactrocera tau (Walker) (Diptera: Tephritidae) under Laboratory Conditions. Neotrop Entomol 2014; 43:335-343. [PMID: 27193811 DOI: 10.1007/s13744-014-0224-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 08/18/2013] [Accepted: 05/20/2014] [Indexed: 06/05/2023]
Abstract
The melon fly, Bactrocera cucurbitae (Coquillett), and the pumpkin fly, Bactrocera tau (Walker), are economically important pests that attack mainly cucurbitacean fruits. The two fruit fly species have similar natural distributions, host ranges, and population growth capacities. This study was designed to assess the asymmetrical competitions through resource exploitation between the larvae of B. cucurbitae and B. tau at different density levels and temperatures, and on different hosts by comparing the relative effects of interspecific and intraspecific interactions on four life history parameters: survival rate, puparial mass, puparial duration, and developmental duration. Our results showed that intraspecific and interspecific competitions occurred under some laboratory conditions, and B. cucurbitae took advantage over B. tau at the high-density level and at low and high temperatures on pumpkin, bitter gourd, and bottle gourd when interspecific competition took place. Intraspecific and interspecific competitions mainly affected the puparial mass and the survival rate of the two fruit fly species but had no marked effect on the puparial duration or development duration.
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Affiliation(s)
- K Shen
- The State Key Lab for Biocontrol, Institute of Entomology, Sun Yat-Sen Univ, Guangzhou, People's Republic of China
| | - J Hu
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Lab of Agricultural Biotechnology, Kunming, People's Republic of China
| | - B Wu
- The State Key Lab for Biocontrol, Institute of Entomology, Sun Yat-Sen Univ, Guangzhou, People's Republic of China
| | - K An
- The State Key Lab for Biocontrol, Institute of Entomology, Sun Yat-Sen Univ, Guangzhou, People's Republic of China
| | - J Zhang
- Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Yunnan Provincial Key Lab of Agricultural Biotechnology, Kunming, People's Republic of China
| | - J Liu
- The State Key Lab for Biocontrol, Institute of Entomology, Sun Yat-Sen Univ, Guangzhou, People's Republic of China
| | - R Zhang
- The State Key Lab for Biocontrol, Institute of Entomology, Sun Yat-Sen Univ, Guangzhou, People's Republic of China.
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30
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An K, Zhen C, Liu ZH, Zhao Q, Liu HP, Zhong XL, Huang WQ. Spinal protein kinase Mζ contributes to the maintenance of peripheral inflammation-primed persistent nociceptive sensitization after plantar incision. Eur J Pain 2014; 19:39-47. [PMID: 24782097 DOI: 10.1002/ejp.517] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2014] [Indexed: 11/12/2022]
Abstract
BACKGROUND Previous studies suggest that persistent post-surgical pain (PPSP) is correlated with preoperative pain status and amplification of central sensitization. Protein kinase Mζ (PKMζ) is an essential substrate of the late long-term potentiation underlying central sensitization, which is one mechanism of pain memory formation. However, the potential contributions of spinal PKMζ to PPSP, a condition in which preoperative pain is prevalent, are not known. METHODS Here, a modified 'hyperalgesia priming' model was established to simulate the clinical situation. This model used intraplantar injections of carrageenan (Car) as priming stimuli to elicit persistent nociceptive sensitization after plantar incision in rats. Upon treatment with PKMζ inhibitor ZIP, Scr-ZIP or protein kinase Cs (PKCs) inhibitor NPC-15437, altered behaviour and spinal PKMζ/PKCs expression were observed. RESULTS A long-lasting hypersensitivity induced by Car-priming was identified and precipitated by subsequent plantar incision in this 'two-hit' paradigm. Post-treatment with ZIP, but not Scr-ZIP and NPC-15437, after the resolution of Car-priming selectively relieved hypersensitivity. In contrast, pre-priming NPC-15437 treatment only prevented Car-induced initial transient hyperalgesia. Immunoassays showed a significant decrease in spinal PKMζ expression after plantar incision with post-priming ZIP treatment as compared with Scr-ZIP and NPC-15437, but no notable differences in PKCs expression were observed. CONCLUSIONS Spinal PKCs solely contribute to the initial induction of persistent pain, whereas PKMζ plays an essential role in spinal plasticity storage. PKMζ is responsible for the maintenance of peripheral inflammation-primed PPSP. Therefore, spinal PKMζ may be a therapeutic target to prevent surgery-induced chronic pain in patients with preoperative pain.
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Affiliation(s)
- K An
- Department of Anesthesiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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31
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Yin LL, Zhang Y, Guo DM, An K, Yin MS, Cui X. Effects of zinc on interleukins and antioxidant enzyme values in psoriasis-induced mice. Biol Trace Elem Res 2013; 155:411-5. [PMID: 24018880 DOI: 10.1007/s12011-013-9799-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [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: 05/04/2013] [Accepted: 08/16/2013] [Indexed: 01/03/2023]
Abstract
The effects of zinc chloride (ZnCl2), disodium zinc ethylenediamine tetraacetate (Zn-EDTA), and zinc gluconate (Zn-GLU) on the antioxidant enzyme activities and levels of interleukins (ILs) in psoriasis-induced mice were studied. One hundred twenty female mice were randomly divided into six groups with 20 mice in each group: the control, positive control (PC), methotrexate (MTX), ZnCl2, Zn-EDTA, and Zn-GLU groups. All animals except the control group were given diethylstilbestrol for three consecutive days. After successfully inducing psoriasis, the control and PC groups were given normal saline (i.g.) daily while the remaining groups were given MTX, ZnCl2, Zn-EDTA, and Zn-GLU, respectively. The results revealed that the zinc supplementation could significantly (p < 0.05) inhibit mitosis in the mouse vaginal epithelium as methotrexate did and the inhibiting efficacy had nothing to do with the zinc forms. After ZnCl2, Zn-EDTA, and Zn-GLU supplementation, the levels of liver superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) activities increased and the concentration of malondialdehyde (MDA) decreased significantly (p < 0.05) compared to the PC group. The levels of SOD, CAT activity, and MDA level between each zinc supplementation group and MTX group were insignificant (p > 0.05). The zinc treatments also caused a significant (p < 0.05) decrease in the raised IL-2 level of animal serum. The results obtained in the present work indicate the potential for zinc as a complementary pharmaceutical intervention for the treatment of topical psoriasis.
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Affiliation(s)
- L L Yin
- Institute of Chemistry and Bacteria Detection, School of Public Health, Shandong University, Jinan, Shandong, 250012, People's Republic of China
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Parke E, Hart J, Baldock D, Barchard K, Etcoff L, Allen D, Stolberg P, Nardi N, Cohen J, Jones W, Loe S, Etcoff L, Delgaty L, Tan A, Bunner M, Delgaty L, Tan A, Bunner M, Tan A, Delgaty L, Bunner M, Tan A, Delgaty L, Bunner M, Goodman G, Kim W, Nolty A, Marion S, Davis A, Finch W, Piehl J, Moss L, Nogin R, Dean R, Davis J, Lindstrom W, Poon M, Fonseca F, Bure-Reyes A, Stewart J, Golden C, Fonseca F, Bure-Reyes A, Stewart J, Golden C, Fields K, Hill B, Corley E, Russ K, Boettcher A, Musso M, Rohling M, Rowden A, Downing K, Benners M, Miller D, Maricle D, Dugbartey T, Anum A, Anderson J, Daniel M, Hoskins L, Gillis K, Khen S, Carter K, Ayers C, Neeland I, Cullum M, Weiner M, Rossetti H, Buddin W, Mahal S, Schroeder R, Baade L, Macaluso M, Phelps K, Evans C, Clark J, Vickery C, Chow J, Stokic D, Phelps K, Evans C, Watson S, Odom R, Clark J, Clark J, Odom R, Evans C, Vickery C, Thompson J, Noggle C, Kane C, Kecala N, Lane E, Raymond M, Woods S, Iudicello J, Dawson M, Ghias A, Choe M, Yudovin S, McArthur D, Asarnow R, Giza C, Babikian T, Tun S, O'Neil M, Ensley M, Storzbach D, Ellis R, O'Neil M, Carlson K, Storzbach D, Brenner L, Freeman M, Quinones A, Motu'apuaka M, Ensley M, Kansagara D, Brickell T, Grant I, Lange R, Kennedy J, Ivins B, Marshall K, Prokhorenko O, French L, Brickell T, Lange R, Bhagwat A, French L, Weber E, Nemeth D, Songy C, Gremillion A, Lange R, Brubacher J, Shewchuk J, Heran M, Jarrett M, Rauscher A, Iverson G, Woods S, Ukueberuwa D, Medaglia J, Hillary F, Meyer J, Vargas G, Rabinowitz A, Barwick F, Arnett P, Levan A, Gale S, Atkinson J, Boettcher A, Hill B, Rohling M, Stolberg P, Hart J, Allen D, Mayfield J, Ellis M, Marion SD, Houshyarnejad A, Grant I, Akarakian R, Kernan C, Babikian T, Asarnow R, Bens M, Fisher M, Garrett C, Vinogradov S, Walker K, Torstrick A, Uderman J, Wellington R, Zhao L, Fromm N, Dahdah M, Salisbury D, Monden K, Lande E, Wanlass R, Fong G, Smith K, Miele A, Novakovic-Agopian T, Chen A, Rome S, Rossi A, Abrams G, Murphy M, Binder D, Muir J, Carlin G, Loya F, Rabinovitz B, Bruhns M, Adler M, Schleicher-Dilks S, Messerly J, Babika C, Ukpabi C, Golden C, Schleicher-Dilks S, Coad S, Messerly J, Schaffer S, Babika C, Golden C, Cowad S, Paisley S, Fontanetta R, Messerly J, Golden C, Holder C, Kloezeman K, Henry B, Burns W, Patt V, Minassian A, Perry W, Cooper L, Allen D, Vogel S, Woolery H, Ciobanu C, Simone A, Bedard A, Olivier T, O'Neill S, Rajendran K, Halperin J, Rudd-Barnard A, Steenari M, Murry J, Le M, Becker T, Mucci G, Zupanc M, Shapiro E, Santos O, Cadavid N, Giese E, Londono N, Osmon D, Zamzow J, Culnan E, D'Argenio D, Mosti C, Spiers M, Schleicher-Dilks S, Kloss J, Curiel A, Miller K, Olmstead R, Gottuso A, Saucier C, Miller J, Dye R, Small G, Kent A, Andrews P, Puente N, Terry D, Faraco C, Brown C, Patel A, Siegel J, Miller L, Lee B, Joan M, Thaler N, Fontanetta R, Carla F, Allen D, Nguyen T, Glass L, Coles C, Julie K, May P, Sowell E, Jones K, Riley E, Demsky Y, Mattson S, Allart A, Freer B, Tiersky L, Sunderaraman P, Sylvester P, Ang J, Schultheis M, Newton S, Holland A, Burns K, Bunting J, Taylor J, Muetze H, Coe M, Harrison D, Putnam M, Tiersky L, Freer B, Holland A, Newton S, Sakamoto M, Bunting J, Taylor J, Coe M, Harrison D, Musso M, Hill B, Barker A, Pella R, Gouvier W, Davis J, Woods S, Wall J, Etherton J, Brand T, Hummer B, O'Shea C, Segovia J, Thomlinson S, Schulze E, Roskos P, Gfeller J, Loftis J, Fogel T, Barrera K, Sherzai A, Chappell A, Harrison A, Armstrong I, Flaro L, Pedersen H, Shultz LS, Roper B, Huckans M, Basso M, Silk-Eglit G, Stenclik J, Miele A, Lynch J, McCaffrey R, Silk-Eglit G, Stenclik J, Miele A, Lynch J, Musso M, McCaffrey R, Martin P, VonDran E, Baade L, Heinrichs R, Schroeder R, Hunter B, Calloway J, Rolin S, Akeson S, Westervelt H, Mohammed S, An K, Jeffay E, Zakzanis K, Lynch A, Drasnin D, Ikanga J, Graham O, Reid M, Cooper D, Long J, Lange R, Kennedy J, Hopewell C, Lukaszewska B, Pachalska M, Bidzan M, Lipowska M, McCutcheon L, Kaup A, Park J, Morgan E, Kenton J, Norman M, Martin P, Netson K, Woods S, Smith M, Paulsen J, Hahn-Ketter A, Paxton J, Fink J, Kelley K, Lee R, Pliskin N, Segala L, Vasilev G, Bozgunov K, Naslednikova R, Raynov I, Gonzalez R, Vassileva J, Bonilla X, Fedio A, Johnson K, Sexton J, Blackstone K, Weber E, Moore D, Grant I, Woods S, Pimental P, Welch M, Ring M, Stranks E, Crowe S, Jaehnert S, Ellis C, Prince C, Wheaton V, Schwartz D, Loftis J, Fuller B, Hoffman W, Huckans M, Turecka S, McKeever J, Morse C, Schultheis M, Dinishak D, Dasher N, Vik P, Hachey D, Bowman B, Van Ness E, Williams C, Zamzow J, Sunderaraman P, Kloss J, Spiers M, Swirsky-Sacchetti T, Alhassoon O, Taylor M, Sorg S, Schweinsburg B, Stricker N, Kimmel C, Grant I, Alhassoon O, Taylor M, Sorg S, Schweinsburg B, Stephan R, Stricker N, Grant I, Hertza J, Tyson K, Northington S, Loughan A, Perna R, Davis A, Collier M, Schroeder R, Buddin W, Schroeder R, Moore C, Andrew W, Ghelani A, Kim J, Curri M, Patel S, Denney D, Taylor S, Huberman S, Greenberg B, Lacritz L, Brown D, Hughes S, Greenberg B, Lacritz L, Vargas V, Upshaw N, Whigham K, Peery S, Casto B, Barker L, Otero T, La D, Nunan-Saah J, Phoong M, Gill S, Melville T, Harley A, Gomez R, Adler M, Tsou J, Schleicher-Dilks S, Golden C, Tsou J, Schleicher-Dilks S, Adler M, Golden C, Cowad S, Link J, Barker T, Gulliver K, Golden C, Young K, Moses J, Lum J, Vik P, Legarreta M, Van Ness E, Williams C, Dasher N, Williams C, Vik P, Dasher N, Van Ness E, Bowman B, Nakhutina L, Margolis S, Baek R, Gonzalez J, Hill F, England H, Horne-Moyer L, Stringer A, DeFilippis N, Lyon A, Giovannetti T, Fanning M, Heverly-Fitt S, Stambrook E, Price C, Selnes O, Floyd T, Vogt E, Thiruselvam I, Quasney E, Hoelzle J, Grant N, Moses J, Matevosyan A, Delano-Wood L, Alhassoon O, Hanson K, Lanni E, Luc N, Kim R, Schiehser D, Benners M, Downing K, Rowden A, Miller D, Maricle D, Kaminetskaya M, Moses J, Tai C, Kaminetskaya M, Melville T, Poole J, Scott R, Hays F, Walsh B, Mihailescu C, Douangratdy M, Scott B, Draffkorn C, Andrews P, Schmitt A, Waksmunski C, Brady K, Andrews A, Golden C, Olivier T, Espinoza K, Sterk V, Spengler K, Golden C, Olivier T, Spengler K, Sterk V, Espinoza K, Golden C, Gross J, DeFilippis N, Neiman-Kimel J, Romers C, Isaacs C, Soper H, Sordahl J, Tai C, Moses J, D'Orio V, Glukhovsky L, Beier M, Shuman M, Spat J, Foley F, Guatney L, Bott N, Moses J, Miranda C, Renteria MA, Rosario A, Sheynin J, Fuentes A, Byrd D, Mindt MR, Batchelor E, Meyers J, Patt V, Thomas M, Minassian A, Geyer M, Brown G, Perry W, Smith C, Kiefel J, Rooney A, Gouaux B, Ellis R, Grant I, Moore D, Graefe A, Wyman-Chick K, Daniel M, Beene K, Jaehnert S, Choi A, Moses J, Iudicello J, Henry B, Minassian A, Perry W, Marquine M, Morgan E, Letendre S, Ellis R, Woods S, Grant I, Heaton R, Constantine K, Fine J, Palewjala M, Macher R, Guatney L, Earleywine M, Draffkorn C, Scott B, Andrews P, Schmitt A, Dudley M, Silk-Eglit G, Stenclik J, Miele A, Lynch J, McCaffrey R, Scharaga E, Gomes W, McGinley J, Miles-Mason E, Colvin M, Carrion L, Romers C, Soper H, Zec R, Kohlrus S, Fritz S, Robbs R, Ala T, Zec R, Fritz S, Kohlrus S, Robbs R, Ala T, Edwards M, Hall J, O'Bryant S, Miller J, Dye R, Miller K, Baerresen K, Small G, Moskowitz J, Puente A, Ahmed F, Faraco C, Brown C, Evans S, Chu K, Miller L, Young-Bernier M, Tanguay A, Tremblay F, Davidson P, Duda B, Puente A, Terry D, Kent A, Patel A, Miller L, Junod A, Marion SD, Harrington M, Fonteh A, Gurnani A, John S, Gavett B, Diaz-Santos M, Mauro S, Beaute J, Cronin-Golomb A, Fazeli P, Gouaux B, Rosario D, Heaton R, Moore D, Puente A, Lindbergh C, Chu K, Evans S, Terry D, Duda B, Mackillop J, Miller S, Greco S, Klimik L, Cohen J, Robbins J, Lashley L, Schleicher-Dilks S, Golden C, Kunkes I, Culotta V, Kunkes I, Griffits K, Loughan A, Perna R, Hertza J, Cohen M, Northington S, Tyson K, Musielak K, Fine J, Kaczorowski J, Doty N, Braaten E, Shah S, Nemanim N, Singer E, Hinkin C, Levine A, Gold A, Evankovich K, Lotze T, Yoshida H, O'Bryan S, Roberg B, Glusman M, Ness A, Thelen J, Wilson L, Feaster T, Bruce J, Lobue C, Brown D, Hughes S, Greenberg B, Lacritz L, Bristow-Murray B, Andrews A, Bermudez C, Golden C, Moore R, Pulver A, Patterson T, Bowie C, Harvey P, Jeste D, Mausbach B, Wingo J, Fink J, Lee R, Pliskin N, Legenkaya A, Henry B, Minassian A, Perry W, McKeever J, Morse C, Thomas F, Schultheis M, Ruocco A, Daros A, Gill S, Grimm D, Saini G, Relova R, Hoblyn J, Lee T, Stasio C, Mahncke H, Drag L, Grimm D, Gill S, Saini G, Relova R, Hoblyn J, Lee T, Stasio C, Mahncke H, Drag L, Verbiest R, Ringdahl E, Thaler N, Sutton G, Vogel S, Reyes A, Ringdahl E, Vogel S, Freeman A, Call E, Allen D, March E, Salzberg M, Vogel S, Ringdahl E, Freeman A, Dadis F, Allen D, Sisk S, Ringdahl E, Vogel S, Freeman A, Allen D, DiGangi J, Silva L, Pliskin N, Thieme B, Daniel M, Jaehnert S, Noggle C, Thompson J, Kecala N, Lane E, Kane C, Noggle C, Thompson J, Lane E, Kecala N, Kane C, Palmer G, Happe M, Paxson J, Jurek B, Graca J, Olson S, Melville T, Harley A, La D, Phoong M, Gill S, Jocson VA, Nunan-Saah J, Keller J, Gomez R, Melville T, Kaminetskaya M, Poole J, Vernon A, Van Vleet T, DeGutis J, Chen A, Marini C, Dabit S, Gallegos J, Zomet A, Merzenich M, Thaler N, Linck J, Heyanka D, Pastorek N, Miller B, Romesser J, Sim A, Allen D, Zimmer A, Marcinak J, Hibyan S, Webbe F, Rainwater B, Francis J, Baum L, Sautter S, Donders J, Hui E, Barnes K, Walls G, Erikson S, Bailie J, Schwab K, Ivins B, Boyd C, Neff J, Cole W, Lewis S, Bailie J, Schwab K, Ivins B, Boyd C, Neff J, Cole W, Lewis S, Ramirez C, Oganes M, Gold S, Tanner S, Pina D, Merritt V, Arnett P, Heyanka D, Linck J, Thaler N, Pastorek N, Miller B, Romesser J, Sim A, Parks A, Roskos P, Gfeller J, Clark A, Isham K, Carter J, McLeod J, Romero R, Dahdah M, Barisa M, Schmidt K, Barnes S, Dubiel R, Dunklin C, Harper C, Callender L, Wilson A, Diaz-Arrastia R, Shafi S, Jacquin K, Bolshin L, Jacquin K, Romers C, Gutierrez E, Messerly J, Tsou J, Adler M, Golden C, Harmell A, Mausbach B, Moore R, Depp C, Jeste D, Palmer B, Hoadley R, Hill B, Rohling M, Mahdavi S, Fine J, daCruz K, Dinishak D, Richardson G, Vertinski M, Allen D, Mayfield J, Margolis S, Miele A, Rabinovitz B, Schaffer S, Kline J, Boettcher A, Hill B, Hoadley R, Rohling M, Eichstaedt K, Vale F, Benbadis S, Bozorg A, Rodgers-Neame N, Rinehardt E, Mattingly M, Schoenberg M, Fares R, Fares R, Carrasco R, Grups J, Evans B, Simco E, Mittenberg W, Carrasco R, Grups J, Evans B, Simco E, Mittenberg W, Rach A, Baughman B, Young C, Bene E, Irwin C, Li Y, Poulin R, Jerram M, Susmaras T, Gansler D, Ashendorf L, Miarmi L, Fazio R, Cantor J, Fernandez A, Godoy-Garcete G, Marchetti P, Harrison A, Armstrong I, Harrison L, Iverson G, Brinckman D, Ayaz H, Schultheis M, Heinly M, Vitelli K, Russler K, Sanchez I, Jones W, Loe S, Raines T, Hart J, Bene E, Li Y, Irwin C, Baughman B, Rach A, Bravo J, Schilling B, Weiss L, Lange R, Shewchuk J, Heran M, Rauscher A, Jarrett M, Brubacher J, Iverson G, Zink D, Barney S, Gilbert G, Allen D, Martin P, Schroeder R, Klas P, Jeffay E, Zakzanis K, Iverson G, Lanting S, Saffer B, Koehle M, Palmer B, Barrio C, Vergara R, Muniz M, Pinto L, Jeste D, Stenclik J, Lynch J, McCaffrey R, Shultz LS, Pedersen H, Roper B, Crouse E, Crucian G, Dezhkam N, Mulligan K, Singer R, Psihogios A, Davis A, Stephens B, Love C, Mulligan K, Webbe F, West S, McCue R, Goldin Y, Cicerone K, Ruchinskas R, Seidl JT, Massman P, Tam J, Schmitter-Edgecombe M, Baerresen K, Hanson E, Miller K, Miller J, Yeh D, Kim J, Ercoli L, Siddarth P, Small G, Noback M, Noback M, Baldock D, Mahmoud S, Munic-Miller D, Bonner-Jackson A, Banks S, Rabin L, Emerson J, Smith C, Roberts R, Hass S, Duhig A, Pankratz V, Petersen R, Leibson C, Harley A, Melville T, Phoong M, Gill S, Nunan-Saah J, La D, Gomez R, Lindbergh C, Puente A, Gray J, Chu K, Evans S, Sweet L, MacKillop J, Miller L, McAlister C, Schmitter-Edgecombe M, Baldassarre M, Kamm J, Wolff D, Dombrowski C, Bullard S, Edwards M, Hall J, Parsons T, O'Bryant S, Lawson R, Papadakis A, Higginson C, Barnett J, Wills M, Strang J, Dominska A, Wallace G, Kenworthy L, Bott N, Kletter H, Carrion V, Ward C, Getz G, Peer J, Baum C, Edner B, Mannarino A, Casnar C, Janke K, van der Fluit F, Natalie B, Haberman D, Solomon M, Hunter S, Klein-Tasman B, Starza-Smith A, Talbot E, Hart A, Hall M, Baker J, Kral M, Lally M, Zisk A, Lo T, Ross P, Cuevas M, Patel S, Lebby P, Mouanoutoua A, Harrison J, Pollock M, Mathiowetz C, Romero R, Boys C, Vekaria P, Vasserman M, MacAllister W, Stevens S, Van Hecke A, Carson A, Karst J, Schohl K, Dolan B, McKindles R, Remel R, Reveles A, Fritz N, McDonald G, Wasisco J, Kahne J, Hertza J, Tyson K, Northington S, Loughan A, Perna R, Newman A, Garmoe W, Clark J, Loughan A, Perna R, Hertza J, Cohen M, Northington S, Tyson K, Whithers K, Puente A, Dedmon A, Capps J, Lindsey H, Francis M, Weigand L, Steed A, Puente A, Edmed S, Sullivan K, Puente A, Lindsey H, Dedmon A, Capps J, Whithers K, Weigand L, Steed A, Kark S, Lafleche G, Brown T, Bogdanova Y, Strongin E, Spickler C, Drasnin D, Strongin C, Poreh A, Houshyarnejad A, Ellis M, Babikian T, Kernan C, Asarnow R, Didehbani N, Cullum M, Loneman L, Mansinghani S, Hart J, Fischer J. POSTER SESSIONS SCHEDULE. Arch Clin Neuropsychol 2013. [DOI: 10.1093/arclin/act054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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Jouffroy R, Lamhaut L, Cremniter D, An K, Carli P, Vivien B. Enquête sur les attentes de la famille et/ou des proches d’un patient hospitalisé en réanimation après prise en charge extrahospitalière par une équipe du samu. ACTA ACUST UNITED AC 2013; 32:94-7. [DOI: 10.1016/j.annfar.2012.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 11/05/2012] [Indexed: 11/26/2022]
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Hong HG, Seo W, Song Y, Lee M, Jeong H, Shin Y, Choi W, Dasari RR, An K. Spectrum of the cavity-QED microlaser: strong coupling effects in the frequency pulling at off resonance. Phys Rev Lett 2012; 109:243601. [PMID: 23368317 DOI: 10.1103/physrevlett.109.243601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Indexed: 06/01/2023]
Abstract
We report the first experimental observation of the cavity-QED microlaser spectrum, specifically the unconventional frequency pulling brought by a strong atom-cavity coupling at off resonance. The pulling is enhanced quadratically by the atom-cavity coupling to result in a sensitive response to the number of pumping atoms (2.1 kHz per atom maximally). Periodic variation of the pulling due to the coherent Rabi oscillation is also observed as the number of pumping atoms is increased across multiple thresholds.
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Affiliation(s)
- H-G Hong
- Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
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Pramanick A, Jones JL, Tutuncu G, Ghosh D, Stoica AD, An K. Strain incompatibility and residual strains in ferroelectric single crystals. Sci Rep 2012; 2:929. [PMID: 23226595 PMCID: PMC3514686 DOI: 10.1038/srep00929] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 11/02/2012] [Indexed: 11/09/2022] Open
Abstract
Residual strains in ferroelectrics are known to adversely affect the material properties by aggravating crack growth and fatigue degradation. The primary cause for residual strains is strain incompatibility between different microstructural entities. For example, it was shown in polycrystalline ferroelectrics that residual strains are caused due to incompatibility between the electric-field-induced strains in grains with different crystallographic orientations. However, similar characterization of cause-effect in multidomain ferroelectric single crystals is lacking. In this article, we report on the development of plastic residual strains in [111]-oriented domain engineered BaTiO(3) single crystals. These internal strains are created due to strain incompatibility across 90° domain walls between the differently oriented domains. The average residual strains over a large crystal volume measured by in situ neutron diffraction is comparable to previous X-ray measurements of localized strains near domain boundaries, but are an order of magnitude lower than electric-field-induced residual strains in polycrystalline ferroelectrics.
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Affiliation(s)
- A Pramanick
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA.
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Pramanick A, Lauter V, Wang XL, An K, Ambaye H, Goyette Jr RJ, Yi J, Gai Z, Stoica AD. Polarized neutron diffraction at a spallation source for magnetic studies. J Appl Crystallogr 2012. [DOI: 10.1107/s0021889812034474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The availability of high-power spallation neutron sources, along with advances in the development of coupled moderators and neutron polarizers, has made it possible to use polarized neutrons on time-of-flight diffractometers forin situstudies of phenomena contributing to field-induced magnetization of a material. Different electronic and structural phenomena that contribute to the overall magnetization of a material can be studied and clearly identified with polarized neutron diffraction measurements. This article reports the first results from polarized neutron diffraction experiments on a time-of-flight instrument at a spallation source. Magnetic field-induced rotation of electron spins in an Ni–Mn–Ga single crystal was measured with polarized neutron diffraction at the MAGICS reflectometer at the Spallation Neutron Source at Oak Ridge National Laboratory. The difference in intensities measured with spin-up and spin-down polarized neutrons is proportional to the field-induced magnetization of the crystal. The polarized neutron measurements indicate that the magnetic form factor for the 3delectrons of Mn in Ni–Mn–Ga is lower than the value reported earlier for an ideal spherical symmetry of electronic distribution. Future experiments for studying field-induced magnetization in materials following the current methodology are outlined.
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Kim J, Lee M, Kim D, Seo W, Hong HG, Song Y, An K. Prescribed nondegenerate high-order modes in an axial-asymmetric high-finesse Fabry-Perot microcavity. Opt Lett 2012; 37:1457-1459. [PMID: 22555703 DOI: 10.1364/ol.37.001457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report an axial-asymmetric high-Q Fabry-Perot cavity supporting nondegenerate Hermite-Gaussian modes of the same mode order. Axial asymmetry of mirror surface was introduced by mechanically grinding off one side of a cylindrical mirror substrate without degrading the original mirror quality. The bases of the resulting Hermite-Gaussian modes were aligned with respect to the direction of grinding, making it possible to prescribe the mirror principal axes.
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Affiliation(s)
- J Kim
- School of Physics and Astronomy, Seoul National University, Seoul, South Korea
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Gutjahr C, Radovanovic D, Geoffroy J, Zhang Q, Siegler H, Chiapello M, Casieri L, An K, An G, Guiderdoni E, Kumar CS, Sundaresan V, Harrison MJ, Paszkowski U. The half-size ABC transporters STR1 and STR2 are indispensable for mycorrhizal arbuscule formation in rice. Plant J 2012; 69:906-20. [PMID: 22077667 DOI: 10.1111/j.1365-313x.2011.04842.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The central structure of the symbiotic association between plants and arbuscular mycorrhizal (AM) fungi is the fungal arbuscule that delivers minerals to the plant. Our earlier transcriptome analyses identified two half-size ABCG transporters that displayed enhanced mRNA levels in mycorrhizal roots. We now show specific transcript accumulation in arbusculated cells of both genes during symbiosis. Presently, arbuscule-relevant factors from monocotyledons have not been reported. Mutation of either of the Oryza sativa (rice) ABCG transporters blocked arbuscule growth of different AM fungi at a small and stunted stage, recapitulating the phenotype of Medicago truncatula stunted arbuscule 1 and 2 (str1 and str2) mutants that are deficient in homologous ABCG genes. This phenotypic resemblance and phylogenetic analysis suggest functional conservation of STR1 and STR2 across the angiosperms. Malnutrition of the fungus underlying limited arbuscular growth was excluded by the absence of complementation of the str1 phenotype by wild-type nurse plants. Furthermore, plant AM signaling was found to be intact, as arbuscule-induced marker transcript accumulation was not affected in str1 mutants. Strigolactones have previously been hypothesized to operate as intracellular hyphal branching signals and possible substrates of STR1 and STR2. However, full arbuscule development in the strigolactone biosynthesis mutants d10 and d17 suggested strigolactones to be unlikely substrates of STR1/STR2. Interestingly, rice STR1 is associated with a cis-natural antisense transcript (antiSTR1). Analogous to STR1 and STR2, at the root cortex level, the antiSTR1 transcript is specifically detected in arbusculated cells, suggesting unexpected modes of STR1 regulation in rice.
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Affiliation(s)
- Caroline Gutjahr
- Department of Plant Molecular Biology, University of Lausanne, Switzerland
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Fallows R, McCoy K, Hertza J, Klosson E, Estes B, Stroescu I, Salinas C, Stringer A, Aronson S, MacAllister W, Spurgin A, Morriss M, Glasier P, Stavinoha P, Houshyarnejad A, Jacobus J, Norman M, Peery S, Mattingly M, Pennuto T, Anderson-Hanley C, Miele A, Dunnam M, Edwards M, O'Bryant S, Johnson L, Barber R, Inscore A, Kegel J, Kozlovsky A, Tarantino B, Goldberg A, Herrera-Pino J, Jubiz-Bassi N, Rashid K, Noniyeva Y, Vo K, Stephens V, Gomez R, Sanders C, Kovacs M, Walton B, Schmitter-Edgecombe M, Schmitter-Edgecombe M, Parsey C, Cook D, Woods S, Weinborn M, Velnoweth A, Rooney A, Bucks R, Adalio C, White S, Blair J, Barber B, Marcy S, Barber B, Marcy S, Boseck J, McCormick C, Davis A, Berry K, Koehn E, Tiberi N, Gelder B, Brooks B, Sherman E, Garcia M, Robillard R, Gunner J, Miele A, Lynch J, McCaffrey R, Hamilton J, Froming K, Nemeth D, Steger A, Lebby P, Harrison J, Mounoutoua A, Preiss J, Brimager A, Gates E, Chang J, Cisneros H, Long J, Petrauskas V, Casey J, Picard E, Long J, Petrauskas V, Casey J, Picard E, Miele A, Gunner J, Lynch J, McCaffrey R, Rodriguez M, Fonseca F, Golden C, Davis J, Wall J, DeRight J, Jorgensen R, Lewandowski L, Ortigue S, Etherton J, Axelrod B, Green C, Snead H, Semrud-Clikeman M, Kirk J, Connery A, Kirkwood M, Hanson ML, Fazio R, Denney R, Myers W, McGuire A, Tree H, Waldron-Perrine B, Goldenring Fine J, Spencer R, Pangilinan P, Bieliauskas L, Na S, Waldron-Perrine B, Tree H, Spencer R, Pangilinan P, Bieliauskas L, Peck C, Bledsoe J, Schroeder R, Boatwright B, Heinrichs R, Baade L, Rohling M, Hill B, Ploetz D, Womble M, Shenesey J, Schroeder R, Semrud-Clikeman M, Baade L, VonDran E, Webster B, Brockman C, Burgess A, Heinrichs R, Schroeder R, Baade L, VonDran E, Webster B, Goldenring Fine J, Brockman C, Heinrichs R, Schroeder R, Baade L, VonDran E, Webster B, Brockman C, Heinrichs R, Schroeder R, Baade L, Bledsoe J, VonDran E, Webster B, Brockman C, Heinrichs R, Schroeder R, Baade L, VonDran E, Webster B, Brockman C, Heinrichs R, Thaler N, Strauss G, White T, Gold J, Tree H, Waldron-Perrine B, Spencer R, McGuire A, Na S, Pangilinan P, Bieliauskas L, Allen D, Vincent A, Roebuck-Spencer T, Cooper D, Bowles A, Gilliland K, Watts A, Ahmed F, Miller L, Yon A, Gordon B, Bello D, Bennett T, Yon A, Gordon B, Bennett T, Wood N, Etcoff L, Thede L, Oraker J, Gibson F, Stanford L, Gray S, Vroman L, Semrud-Clikeman M, Taylor T, Seydel K, Bure-Reyes A, Stewart J, Tourgeman I, Demsky Y, Golden C, Burns W, Gray S, Burns K, Calderon C, Tourgeman I, Golden C, Neblina C, San Miguel Montes L, Allen D, Strutt A, Scott B, Strutt A, Scott B, Armstrong P, Booth C, Blackstone K, Moore D, Gouaux B, Ellis R, Atkinson J, Grant I, Brennan L, Schultheis M, Hurtig H, Weintraub D, Duda J, Moberg P, Chute D, Siderowf A, Brescian N, Gass C, Brewster R, King T, Morris R, Krawiecki N, Dinishak D, Richardson G, Estes B, Knight M, Hertza J, Fallows R, McCoy K, Garcia S, Strain G, Devlin M, Cohen R, Paul R, Crosby R, Mitchell J, Gunstad J, Hancock L, Bruce J, Roberg B, Lynch S, Hertza J, Klosson E, Varnadore E, Schiff W, Estes B, Hertza J, Varnadore E, Estes B, Kaufman R, Rinehardt E, Schoenberg M, Mattingly M, Rosado Y, Velamuri S, LeBlanc M, Pimental P, Lynch-Chee S, Broshek D, Lyons P, McKeever J, Morse C, Ang J, Leist T, Tracy J, Schultheis M, Morgan E, Woods S, Rooney A, Perry W, Grant I, Letendre S, Morse C, McKeever J, Schultheis M, Musso M, Jones G, Hill B, Proto D, Barker A, Gouvier W, Nersesova K, Drexler M, Cherkasova E, Sakamoto M, Marcotte T, Hilsabeck R, Perry W, Carlson M, Barakat F, Hassanein T, Shevchik K, McCaw W, Schrock B, Smith M, Moser D, Mills J, Epping E, Paulsen J, Somogie M, Bruce J, Bryan F, Buscher L, Tyrer J, Stabler A, Thelen J, Lovelace C, Spurgin A, Graves D, Greenberg B, Harder L, Szczebak M, Glisky M, Thelen J, Lynch S, Hancock L, Bruce J, Ukueberuwa D, Arnett P, Vahter L, Ennok M, Pall K, Gross-Paju K, Vargas G, Medaglia J, Chiaravalloti N, Zakrzewski C, Hillary F, Andrews A, Golden C, Belloni K, Nicewander J, Miller D, Johnson S, David Z, Weideman E, Lawson D, Currier E, Morton J, Robinson J, Musso M, Hill B, Barker A, Pella R, Jones G, Proto D, Gouvier W, Vertinski M, Allen D, Thaler N, Heisler D, Park B, Barney S, Kucukboyaci N, Girard H, Kemmotsu N, Cheng C, Kuperman J, McDonald C, Carroll C, Odland A, Miller L, Mittenberg W, Coalson D, Wahlstrom D, Raiford S, Holdnack J, Ennok M, Vahter L, Gardner E, Dasher N, Fowler B, Vik P, Grajewski M, Lamar M, Penney D, Davis R, Korthauer L, Libon D, Kumar A, Holdnack J, Iverson G, Chelune G, Hunter C, Zimmerman E, Klein R, Prathiba N, Hopewell A, Cooper D, Kennedy J, Long M, Moses J, Lutz J, Tiberi N, Dean R, Miller J, Axelrod B, Van Dyke S, Rapport L, Schutte C, Hanks R, Pella R, Fallows R, McCoy K, O'Rourke J, Hilsabeck R, Petrauskas V, Bowden S, Romero R, Hulkonen R, Boivin M, Bangirana P, John C, Shapiro E, Slonaker A, Pass L, Smigielski J, Biernacka J, Geske J, Hall-Flavin D, Loukianova L, Schneekloth T, Abulseoud O, Mrazek D, Karpyak V, Terranova J, Safko E, Heisler D, Thaler N, Allen D, Van Dyke S, Axelrod B, Zink D, Puente A, Ames H, LePage J, Carroll C, Knee K, Mittenberg W, Cummings T, Webbe F, Shepherd E, Marcinak J, Diaz-Santos M, Seichepine D, Sullivan K, Neargarder S, Cronin-Golomb A, Franchow E, Suchy Y, Kraybill M, Holland A, Newton S, Hinson D, Smith A, Coe M, Carmona J, Harrison D, Hyer L, Atkinson M, Dalibwala J, Yeager C, Hyer L, Scott C, Atkinson M, Yeager C, Jacobson K, Olson K, Pella R, Fallows R, McCoy K, O'Rourke J, Hilsabeck R, Rosado Y, Kaufman R, Velamuri S, Rinehardt E, Mattingly M, Sartori A, Clay O, Ovalle F, Rothman R, Crowe M, Schmid A, Horne L, Horn G, Johnson-Markve B, Gorman P, Stewart J, Bure-Reyes A, Golden C, Tam J, McAlister C, Schmitter-Edgecombe M, Wagner M, Brenner L, Walker A, Armstrong L, Inman E, Grimmett J, Gray S, Cornelius A, Hertza J, Klosson E, Varnadore E, Schiff W, Estes B, Johnson L, Willingham M, Restrepo L, Bolanos J, Patel F, Golden C, Rice J, Dougherty M, Golden C, Sharma V, Martin P, Golden C, Bradley E, Dinishak D, Lockwood C, Poole J, Brickell T, Lange R, French L, Chao L, Klein S, Dunnam M, Miele A, Warner G, Donnelly K, Donnelly J, Kittleson J, Bradshaw C, Alt M, England D, Denney R, Meyers J, Evans J, Lynch-Chee S, Kennedy C, Moore J, Fedor A, Spitznagel M, Gunstad J, Ferland M, Guerrero NK, Davidson P, Collins B, Marshall S, Herrera-Pino J, Samper G, Ibarra S, Parrott D, Steffen F, Backhaus S, Karver C, Wade S, Taylor H, Brown T, Kirkwood M, Stancin T, Krishnan K, Culver C, Arenivas A, Bosworth C, Shokri-Kojori E, Diaz-Arrastia R, Marquez de la PC, Lange R, Ivins B, Marshall K, Schwab K, Parkinson G, Iverson G, Bhagwat A, French L, Lichtenstein J, Adams-Deutsch Z, Fleischer J, Goldberg K, Lichtenstein J, Adams-Deutsch Z, Fleischer J, Goldberg K, Lichtenstein J, Fleischer J, Goldberg K, Lockwood C, Ehrler M, Hull A, Bradley E, Sullivan C, Poole J, Lockwood C, Sullivan C, Hull A, Bradley E, Ehrler M, Poole J, Marcinak J, Schuster D, Al-Khalil K, Webbe F, Myers A, Ireland S, Simco E, Carroll C, Mittenberg W, Palmer E, Poole J, Bradley E, Dinishak D, Piecora K, Marcinak J, Al-Khalil K, Mroczek N, Schuster D, Snyder A, Rabinowitz A, Arnett P, Schatz P, Cameron N, Stolberg P, Hart J, Jones W, Mayfield J, Allen D, Sullivan K, Edmed S, Vanderploeg R, Silva M, Vaughan C, McGuire E, Gerst E, Fricke S, VanMeter J, Newman J, Gioia G, Vaughan C, VanMeter J, McGuire E, Gioia G, Newman J, Gerst E, Fricke S, Wahlberg A, Zelonis S, Chatterjee A, Smith S, Whipple E, Mace L, Manning K, Ang J, Schultheis M, Wilk J, Herrell R, Hoge C, Zakzanis K, Yu S, Jeffay E, Zimmer A, Webbe F, Piecora K, Schuster D, Zimmer A, Piecora K, Schuster D, Webbe F, Adler M, Holster J, Golden C, Andrews A, Schleicher-Dilks S, Golden C, Arffa S, Thornton J, Arffa S, Thornton J, Arffa S, Thornton J, Arffa S, Thornton J, Canas A, Sevadjian C, Fournier A, Miller D, Maricle D, Donders J, Larsen T, Gidley Larson J, Sheehan J, Suchy Y, Higgins K, Rolin S, Dunham K, Akeson S, Horton A, Reynolds C, Horton A, Reynolds C, Jordan L, Gonzalez S, Heaton S, McAlister C, Tam J, Schmitter-Edgecombe M, Olivier T, West S, Golden C, Prinzi L, Martin P, Robbins J, Bruzinski B, Golden C, Riccio C, Blakely A, Yoon M, Reynolds C, Robbins J, Prinzi L, Martin P, Golden C, Schleicher-Dilks S, Andrews A, Adler M, Pearlson J, Golden C, Sevadjian C, Canas A, Fournier A, Miller D, Maricle D, Sheehan J, Gidley LJ, Suchy Y, Sherman E, Carlson H, Gaxiola-Valdez I, Wei X, Beaulieu C, Hader W, Brooks B, Kirton A, Barlow K, Hrabok M, Mohamed I, Wiebe S, Smith K, Ailion A, Ivanisevic M, King T, Smith K, King T, Thorgusen S, Bowman D, Suchy Y, Walsh K, Mitchell F, Jill G, Iris P, Ross K, Madan-Swain A, Gioia G, Isquith P, Webber D, DeFilippis N, Collins M, Hill F, Weber R, Johnson A, Wiley C, Zimmerman E, Burns T, DeFilippis N, Ritchie D, Odland A, Stevens A, Mittenberg W, Hartlage L, Williams B, Weidemann E, Demakis G, Avila J, Razani J, Burkhart S, Adams W, Edwards M, O'Bryant S, Hall J, Johnson L, Grammas P, Gong G, Hargrave K, Mattevada S, Barber R, Hall J, Vo H, Johnson L, Barber R, O'Bryant S, Hill B, Davis J, O'Connor K, Musso M, Rehm-Hamilton T, Ploetz D, Rohling M, Rodriguez M, Potter E, Loewenstein D, Duara R, Golden C, Velamuri S, Rinehardt E, Schoenberg M, Mattingly M, Kaufman R, Rosado Y, Boseck J, Tiberi N, McCormick C, Davis A, Hernandez Finch M, Gelder B, Cannon M, McGregor S, Reitman D, Rey J, Scarisbrick D, Holdnack J, Iverson G, Thaler N, Bello D, Whoolery H, Etcoff L, Vekaria P, Whittington L, Nemeth D, Gremillion A, Olivier T, Amirthavasagam S, Jeffay E, Zakzanis K, Barney S, Umuhoza D, Strauss G, Knatz-Bello D, Allen D, Bolanos J, Bell J, Restrepo L, Frisch D, Golden C, Hartlage L, Williams B, Iverson G, McIntosh D, Kjernisted K, Young A, Kiely T, Tai C, Gomez R, Schatzberg A, Keller J, Rhodes E, Ajilore O, Zhang A, Kumar A, Lamar M, Ringdahl E, Sutton G, Turner A, Snyder J, Allen D, Verbiest R, Thaler N, Strauss G, Allen D, Walkenhorst E, Crowe S, August-Fedio A, Sexton J, Cummings S, Brown K, Fedio P, Grigorovich A, Fish J, Gomez M, Leach L, Lloyd H, Nichols M, Goldberg M, Novakovic-Agopian T, Chen A, Abrams G, Rossi A, Binder D, Muir J, Carlin G, Murphy M, McKim R, Fitsimmons R, D'Esposito M, Shevchik K, McCaw W, Schrock B, Vernon A, Frank R, Ona PZ, Freitag E, Weber E, Woods S, Kellogg E, Grant I, Basso M, Dyer B, Daniel M, Michael P, Fontanetta R, Martin P, Golden C, Gass C, Stripling A, Odland A, Holster J, Corsun-Ascher C, Olivier T, Golden C, Legaretta M, Vik P, Van Ness E, Fowler B, Noll K, Denney D, Wiechman A, Stephanie T, Greenberg B, Lacritz L, Padua M, Sandhu K, Moses J, Sordahl J, Anderson J, Wheaton V, Anderson J, Berggren K, Cheung D, Luber H, Loftis J, Huckans M, Bennett T, Dawson C, Soper H, Bennett T, Soper H, Carter K, Hester A, Ringe W, Spence J, Posamentier M, Hart J, Haley R, Fallows R, Pella R, McCoy K, O'Rourke J, Hilsabeck R, Fallows R, Pella R, McCoy K, O'Rourke J, Hilsabeck R, Gass C, Curiel R, Gass C, Stripling A, Odland A, Goldberg M, Lloyd H, Gremillion A, Nemeth D, Whittington L, Hu E, Vik P, Dasher N, Fowler B, Jeffay E, Zakzanis K, Jordan S, DeFilippis N, Collins M, Goetsch V, Small S, Mansoor Y, Homer-Smith E, Lockwood C, Moses J, Martin P, Odland A, Fontanetta R, Sharma V, Golden C, Odland A, Martin P, Perle J, Gass C, Simco E, Mittenberg W, Patt V, Minassian A, Perry W, Polott S, Webbe F, Mulligan K, Shaneyfelt K, Wall J, Thompson J, Tai C, Kiely T, Compono V, Trettin L, Gomez R, Schatzberg A, Keller J, Tsou J, Pearlson J, Sharma V, Tourgeman I, Golden C, Waldron-Perrine B, Tree H, Spencer R, McGuire A, Na S, Pangilinan P, Bieliauskas L, You S, Moses J, An K, Jeffay E, Zakzanis K, Biddle C, Fazio R, Willett K, Rolin S, O'Grady M, Denney R, Bresnan K, Erlanger D, Seegmiller R, Kaushik T, Brooks B, Krol A, Carlson H, Sherman E, Davis J, McHugh T, Axelrod B, Hanks R. Grand Rounds. Arch Clin Neuropsychol 2011. [DOI: 10.1093/arclin/acr056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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An K, Sakakibara T, Settai R, Onuki Y, Hiragi M, Ichioka M, Machida K. Sign reversal of field-angle resolved heat capacity oscillations in a heavy Fermion superconductor CeCoIn5 and d{x{2}-y{2}} pairing symmetry. Phys Rev Lett 2010; 104:037002. [PMID: 20366675 DOI: 10.1103/physrevlett.104.037002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Indexed: 05/29/2023]
Abstract
To identify the superconducting gap symmetry in CeCoIn5 (T{c}=2.3 K), we measured the angle-resolved specific heat (C{phi}) in a field rotated around the c axis down to a very low temperature, 0.05T{c}, and made detailed theoretical calculations. In a field of 1 T, a sign reversal of the fourfold angular oscillation in C{phi} was observed at T approximately 0.1T{c} upon entering a quasiclassical regime where the maximum of C{phi} corresponds to the antinodal direction, coinciding with the angle-resolved density of states (ADOS) calculation. The C{phi} behavior, which exhibits minima along the [110] directions, unambiguously allows us to conclude d{x{2}-y{2}} symmetry of this system. The ADOS-quasiclassical region is confined to a narrow T and H domain within T/T{c} approximately 0.1 and 1.5 T (0.13H{c2}).
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Affiliation(s)
- K An
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
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Abstract
The cellular functions of Ku70 in repair of DNA double-stranded breaks and telomere regulation have been described in a wide range of organisms. In this study, we identified the rice (Oryza sativa) Ku70 homolog (OsKu70) from the rice genome database. OsKu70 transcript was detected constitutively in every tissue and developmental stage examined and also in undifferentiated callus cells in rice. Yeast two-hybrid and in vitro pull-down experiments revealed that OsKu70 physically interacts with OsKu80. We obtained loss-of-function osku70 T-DNA knockout mutant lines and constructed transgenic rice plants that overexpress the OsKu70 gene in the sense (35S:OsKu70) or antisense (35S:anti-OsKu70) orientation. The homozygous G2 osku70 mutant lines were more sensitive than wild-type plants to a DNA-damaging agent (0.01%-0.05% methyl-methane sulfonate), consistent with the notion that OsKu70 participates in the DNA repair mechanism. Terminal restriction fragment analysis revealed that telomeres in homozygous G2 osku70 mutants were markedly longer (10-20 kb) than those in wild-type plants (5-10 kb), whereas telomere length in heterozygous G2 osku70 mutant and T2 OsKu70-overexpressing transgenic (35S:OsKu70) rice resembled that of the wild-type plant. In contrast to what was observed in Arabidopsis (Arabidopsis thaliana) atku70 mutants, homozygous G2 osku70 rice plants displayed severe developmental defects in both vegetative and reproductive organs under normal growth conditions, resulting in sterile flowers. Analysis of meiotic progression in pollen mother cells demonstrated that up to 11.1% (seven of 63) of G2 mutant anaphase cells displayed one or more chromosomal fusions. These results suggest that OsKu70 is required for the maintenance of chromosome stability and normal developmental growth in rice plants.
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Kim SR, Yang JI, Moon S, Ryu CH, An K, Kim KM, Yim J, An G. Rice OGR1 encodes a pentatricopeptide repeat-DYW protein and is essential for RNA editing in mitochondria. Plant J 2009; 59:738-49. [PMID: 19453459 DOI: 10.1111/j.1365-313x.2009.03909.x] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
RNA editing is the alteration of RNA sequences via insertion, deletion and conversion of nucleotides. In flowering plants, specific cytidine residues of RNA transcribed from organellar genomes are converted into uridines. Approximately 35 editing sites are present in the chloroplasts of higher plants; six pentatricopeptide repeat genes involved in RNA editing have been identified in Arabidopsis. However, although approximately 500 editing sites are found in mitochondrial RNAs of flowering plants, only one gene in Arabidopsis has been reported to be involved in such editing. Here, we identified rice mutants that are defective in seven specific RNA editing sites on five mitochondrial transcripts. Their various phenotypes include delayed seed germination, retarded growth, dwarfism and sterility. Mutant seeds from heterozygous plants are opaque. This mutation, named opaque and growth retardation 1 (ogr1), was generated by T-DNA insertion into a gene that encodes a pentatricopeptide repeat protein containing the DYW motif. The OGR1-sGFP fusion protein is localized to mitochondria. Ectopic expression of OGR1 in the mutant complements the altered phenotypes. We conclude that OGR1 is essential for RNA editing in rice mitochondria and is required for normal growth and development.
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Affiliation(s)
- Sung-Ryul Kim
- Department of Integrative Bioscience and Biotechnology, National Research Laboratory of Plant Functional Genomics and Functional Genomic Center, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
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Kim SJ, Lee SC, Hong SK, An K, An G, Kim SR. Ectopic expression of a cold-responsive OsAsr1 cDNA gives enhanced cold tolerance in transgenic rice plants. Mol Cells 2009; 27:449-58. [PMID: 19390826 DOI: 10.1007/s10059-009-0055-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 02/09/2009] [Accepted: 02/16/2009] [Indexed: 10/20/2022] Open
Abstract
The OsAsrt cDNA clone was isolated from a cDNA library prepared from developing seed coats of rice (Oryza sativa L.). Low-temperature stress increased mRNA levels of OsAsr1 in both vegetative and reproductive organs. In situ analysis showed that OsAsr1 transcript was preferentially accumulated in the leaf mesophyll tissues and parenchyma cells of the palea and lemma. For transgenic rice plants that over-expressed full-length OsAsr1 cDNA in the sense orientation, the Fv/Fm values for photosynthetic efficiency were about 2-fold higher than those of wild type-segregating plants after a 24-h cold treatment. Seedlings exposed to prolonged low temperatures were more tolerant of cold stress, as demonstrated during wilting and regrowth tests. Interestingly, OsAsr1 was highly expressed in transgenic rice plants expressing the C-repeat/dehyhdration responsive element binding factor 1 (CBF1), suggesting the regulation of OsAsr1 by CBF1. Taken together, we suggest that OsAsr1 gene play an important role during temperature stress, and that this gene can be used for generating plants with enhanced cold tolerance.
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Affiliation(s)
- Soo-Jin Kim
- Department of Life Science, Sogang University, Seoul, Korea
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An K, Shu H, Huang W, Huang X, Xu M, Yang L, Xu K, Wang C. Effects of propofol on pulmonary inflammatory response and dysfunction induced by cardiopulmonary bypass*. Anaesthesia 2008; 63:1187-92. [DOI: 10.1111/j.1365-2044.2008.05627.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [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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Gutjahr C, Banba M, Croset V, An K, Miyao A, An G, Hirochika H, Imaizumi-Anraku H, Paszkowski U. Arbuscular mycorrhiza-specific signaling in rice transcends the common symbiosis signaling pathway. Plant Cell 2008; 20:2989-3005. [PMID: 19033527 PMCID: PMC2613669 DOI: 10.1105/tpc.108.062414] [Citation(s) in RCA: 169] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 11/04/2008] [Accepted: 11/11/2008] [Indexed: 05/18/2023]
Abstract
Knowledge about signaling in arbuscular mycorrhizal (AM) symbioses is currently restricted to the common symbiosis (SYM) signaling pathway discovered in legumes. This pathway includes calcium as a second messenger and regulates both AM and rhizobial symbioses. Both monocotyledons and dicotyledons form symbiotic associations with AM fungi, and although they differ markedly in the organization of their root systems, the morphology of colonization is similar. To identify and dissect AM-specific signaling in rice (Oryza sativa), we developed molecular phenotyping tools based on gene expression patterns that monitor various steps of AM colonization. These tools were used to distinguish common SYM-dependent and -independent signaling by examining rice mutants of selected putative legume signaling orthologs predicted to be perturbed both upstream (CASTOR and POLLUX) and downstream (CCAMK and CYCLOPS) of the central, calcium-spiking signal. All four mutants displayed impaired AM interactions and altered AM-specific gene expression patterns, therefore demonstrating functional conservation of SYM signaling between distant plant species. In addition, differential gene expression patterns in the mutants provided evidence for AM-specific but SYM-independent signaling in rice and furthermore for unexpected deviations from the SYM pathway downstream of calcium spiking.
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Affiliation(s)
- Caroline Gutjahr
- Department of Plant Molecular Biology, University of Lausane, 1015 Lausane, Switzerland
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Jung KH, Dardick C, Bartley LE, Cao P, Phetsom J, Canlas P, Seo YS, Shultz M, Ouyang S, Yuan Q, Frank BC, Ly E, Zheng L, Jia Y, Hsia AP, An K, Chou HH, Rocke D, Lee GC, Schnable PS, An G, Buell CR, Ronald PC. Refinement of light-responsive transcript lists using rice oligonucleotide arrays: evaluation of gene-redundancy. PLoS One 2008; 3:e3337. [PMID: 18836531 PMCID: PMC2556097 DOI: 10.1371/journal.pone.0003337] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Accepted: 09/11/2008] [Indexed: 01/04/2023] Open
Abstract
Studies of gene function are often hampered by gene-redundancy, especially in organisms with large genomes such as rice (Oryza sativa). We present an approach for using transcriptomics data to focus functional studies and address redundancy. To this end, we have constructed and validated an inexpensive and publicly available rice oligonucleotide near-whole genome array, called the rice NSF45K array. We generated expression profiles for light- vs. dark-grown rice leaf tissue and validated the biological significance of the data by analyzing sources of variation and confirming expression trends with reverse transcription polymerase chain reaction. We examined trends in the data by evaluating enrichment of gene ontology terms at multiple false discovery rate thresholds. To compare data generated with the NSF45K array with published results, we developed publicly available, web-based tools (www.ricearray.org). The Oligo and EST Anatomy Viewer enables visualization of EST-based expression profiling data for all genes on the array. The Rice Multi-platform Microarray Search Tool facilitates comparison of gene expression profiles across multiple rice microarray platforms. Finally, we incorporated gene expression and biochemical pathway data to reduce the number of candidate gene products putatively participating in the eight steps of the photorespiration pathway from 52 to 10, based on expression levels of putatively functionally redundant genes. We confirmed the efficacy of this method to cope with redundancy by correctly predicting participation in photorespiration of a gene with five paralogs. Applying these methods will accelerate rice functional genomics.
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Affiliation(s)
- Ki-Hong Jung
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Christopher Dardick
- Appalachian Fruit Research Station, USDA-ARS, Kearneysville, West Virginia, United States of America
| | - Laura E. Bartley
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Peijian Cao
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Jirapa Phetsom
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Patrick Canlas
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Young-Su Seo
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Michael Shultz
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Shu Ouyang
- J. Craig Venter Institute, Rockville, Maryland, United States of America
| | - Qiaoping Yuan
- J. Craig Venter Institute, Rockville, Maryland, United States of America
| | - Bryan C. Frank
- J. Craig Venter Institute, Rockville, Maryland, United States of America
| | - Eugene Ly
- J. Craig Venter Institute, Rockville, Maryland, United States of America
| | - Li Zheng
- J. Craig Venter Institute, Rockville, Maryland, United States of America
| | - Yi Jia
- Center for Plant Genomics, Iowa State University, Ames, Iowa, United States of America
| | - An-Ping Hsia
- Center for Plant Genomics, Iowa State University, Ames, Iowa, United States of America
| | - Kyungsook An
- Functional Genomic Center, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Hui-Hsien Chou
- Center for Plant Genomics, Iowa State University, Ames, Iowa, United States of America
| | - David Rocke
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
| | - Geun Cheol Lee
- College of Business Administration, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Patrick S. Schnable
- Center for Plant Genomics, Iowa State University, Ames, Iowa, United States of America
| | - Gynheung An
- Functional Genomic Center, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - C. Robin Buell
- J. Craig Venter Institute, Rockville, Maryland, United States of America
| | - Pamela C. Ronald
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
- * E-mail:
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Jung KH, Lee J, Dardick C, Seo YS, Cao P, Canlas P, Phetsom J, Xu X, Ouyang S, An K, Cho YJ, Lee GC, Lee Y, An G, Ronald PC. Identification and functional analysis of light-responsive unique genes and gene family members in rice. PLoS Genet 2008; 4:e1000164. [PMID: 18725934 PMCID: PMC2515340 DOI: 10.1371/journal.pgen.1000164] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [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: 03/05/2008] [Accepted: 07/15/2008] [Indexed: 12/29/2022] Open
Abstract
Functional redundancy limits detailed analysis of genes in many organisms. Here, we report a method to efficiently overcome this obstacle by combining gene expression data with analysis of gene-indexed mutants. Using a rice NSF45K oligo-microarray to compare 2-week-old light- and dark-grown rice leaf tissue, we identified 365 genes that showed significant 8-fold or greater induction in the light relative to dark conditions. We then screened collections of rice T-DNA insertional mutants to identify rice lines with mutations in the strongly light-induced genes. From this analysis, we identified 74 different lines comprising two independent mutant lines for each of 37 light-induced genes. This list was further refined by mining gene expression data to exclude genes that had potential functional redundancy due to co-expressed family members (12 genes) and genes that had inconsistent light responses across other publicly available microarray datasets (five genes). We next characterized the phenotypes of rice lines carrying mutations in ten of the remaining candidate genes and then carried out co-expression analysis associated with these genes. This analysis effectively provided candidate functions for two genes of previously unknown function and for one gene not directly linked to the tested biochemical pathways. These data demonstrate the efficiency of combining gene family-based expression profiles with analyses of insertional mutants to identify novel genes and their functions, even among members of multi-gene families.
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Affiliation(s)
- Ki-Hong Jung
- Department of Plant Pathology, University of California Davis, Davis, California, United States of America
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Hong JP, Byun MY, Koo DH, An K, Bang JW, Chung IK, An G, Kim WT. Suppression of RICE TELOMERE BINDING PROTEIN 1 results in severe and gradual developmental defects accompanied by genome instability in rice. Plant Cell 2007; 19:1770-81. [PMID: 17586654 PMCID: PMC1955717 DOI: 10.1105/tpc.107.051953] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Although several potential telomere binding proteins have been identified in higher plants, their in vivo functions are still unknown at the plant level. Both knockout and antisense mutants of RICE TELOMERE BINDING PROTEIN1 (RTBP1) exhibited markedly longer telomeres relative to those of the wild type, indicating that the amount of functional RTBP1 is inversely correlated with telomere length. rtbp1 plants displayed progressive and severe developmental abnormalities in both germination and postgermination growth of vegetative organs over four generations (G1 to G4). Reproductive organ formation, including panicles, stamens, and spikelets, was also gradually and severely impaired in G1 to G4 mutants. Up to 11.4, 17.2, and 26.7% of anaphases in G2, G3, and G4 mutant pollen mother cells, respectively, exhibited one or more chromosomal fusions, and this progressively increasing aberrant morphology was correlated with an increased frequency of anaphase bridges containing telomeric repeat DNA. Furthermore, 35S:anti-RTBP1 plants expressing lower levels of RTBP1 mRNA exhibited developmental phenotypes intermediate between the wild type and mutants in all aspects examined, including telomere length, vegetative and reproductive growth, and degree of genomic anomaly. These results suggest that RTBP1 plays dual roles in rice (Oryza sativa), as both a negative regulator of telomere length and one of positive and functional components for proper architecture of telomeres.
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Affiliation(s)
- Jong-Pil Hong
- Department of Biology, College of Science, Yonsei University, Seoul, Korea
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49
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Fayaz H, Cooney W, Beckenbaugh R, An K, Jerosch J, Rehart S. Die In-vitro-Stabilität des Langfingergrundgelenkes nach endoprothetischer Versorgung mit Silastik-Implantaten (Sutter) und Oberflächenersatz (Avanta). AKTUEL RHEUMATOL 2006. [DOI: 10.1055/s-2006-927338] [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: 09/29/2022]
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50
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Moon S, Jung KH, Lee DE, Lee DY, Lee J, An K, Kang HG, An G. The rice FON1 gene controls vegetative and reproductive development by regulating shoot apical meristem size. Mol Cells 2006; 21:147-52. [PMID: 16511358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] Open
Abstract
Most plant organs develop from meristems. Rice FON1, which is an ortholog of Clv1, regulates stem cell proliferation and organ initiation. The point muta-tions, fon1-1 and fon1-2, disrupt meristem balance, resulting in alteration of floral organ numbers and the architecture of primary rachis branches. In this study, we identified two knockout alleles, fon1-3 and fon1-4, generated by T-DNA and Tos17 insertion, respectively. Unlike the previously isolated point mutants, the null mutants have alterations not only of the reproductive organs but also of vegetative tissues, producing fewer tillers and secondary rachis branches. The mutant plants are semi-dwarfs due to delayed leaf emergence, and leaf senescence is delayed. SEM analysis showed that the shoot apical meristems of fon1-3 mutants are enlarged. These results indicate that FON1 controls vegetative as well as reproductive development by regulating meristem size.
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Affiliation(s)
- Sunok Moon
- National Research Laboratory of Plant Functional Genomics, Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang 790-784, Korea
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