101
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Shin J, Kim Y, Lee H, Lee J, Kim KS, Cho YJ, Jo YH, Rhu H, Kim KS, Lee SM, Min J, Park G, Yoon J, Park SI, Lee YJ. Transcultural adaptation and validation of familial satisfaction in the intensive care unit in Korea: preliminary study. Intensive Care Med Exp 2015. [PMCID: PMC4796308 DOI: 10.1186/2197-425x-3-s1-a654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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102
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Yoon J, Lim G, Min J, Park G, Shin JY, Park SI, Cho YJ, Lee YJ. How much are family members satisfied with the intensive care unit in south korea? Intensive Care Med Exp 2015. [PMCID: PMC4798193 DOI: 10.1186/2197-425x-3-s1-a657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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103
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Lee KM, Kim H, Nemeno JG, Yang W, Yoon J, Lee S, Lee JI. Natural cardiac extracellular matrix sheet as a biomaterial for cardiomyocyte transplantation. Transplant Proc 2015; 47:751-6. [PMID: 25891725 DOI: 10.1016/j.transproceed.2014.12.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 12/31/2014] [Indexed: 11/26/2022]
Abstract
Cardiovascular diseases associated with myocardial infarction are among the major causes of death worldwide due to the limited regenerative capacity of cardiac tissues. Although various approaches, such as biosynthetic biomaterials, have been developed to promote postinfarction cardiac regeneration, a number of limitations, including the immune complications caused by biodegradation of these scaffolds and insufficient cell migration, need to be overcome prior to their clinical application. Hence, the development of natural biomaterials to support myocardial regeneration is crucial. Here, we investigated the effects of a natural biomaterial, cardiac extracellular matrix (ECM) on the proliferation and maintenance of cardiomyocytes in order to assess its suitability for cardiomyocyte expansion. The ECM components not only provide mechanical support, but also induce and preserve the required phenotypic and functional characteristics of the cells. We prepared ECM sheets from decellularized cardiac sections. Cardiomyocytes were then cultured with and without these cardiac ECM sheets. We compared the proliferation rates and phenotypes, and cardiac gene and protein expression, of the cultured cardiomyocytes by automatic cell counting and the MTT assay, microscopy, and RT-PCR and western blotting, respectively. The cardiomyocytes cultured with the natural cardiac ECM sheets exhibited higher proliferation rates and cardiac gene and protein expression than those cultured without the ECM sheets. Our results demonstrate that the ECM sheets are suitable for use in cardiomyocyte transplantation and can provide a novel in vitro model for investigating cell and ECM interactions. We hypothesize that these ECM sheets can be used in the future to improve cardiac transplantation strategies.
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104
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Lee H, Yoon J, Lee E, Cho S, Park K, Choi W, Koom W, Keum K. Patient Specific Quality Assurance in Robotic Radiosurgery System Using 2D Liquid-filled Ion Chamber Array With Fiducial-inserted Solid Water Phantom. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.2073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Kim J, Kim KP, Lim KT, Lee SC, Yoon J, Song G, Hwang SI, Schöler HR, Cantz T, Han DW. Generation of integration-free induced hepatocyte-like cells from mouse fibroblasts. Sci Rep 2015; 5:15706. [PMID: 26503743 PMCID: PMC4621602 DOI: 10.1038/srep15706] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/23/2015] [Indexed: 12/18/2022] Open
Abstract
The ability to generate integration-free induced hepatocyte-like cells (iHeps) from somatic fibroblasts has the potential to advance their clinical application. Here, we have generated integration-free, functional, and expandable iHeps from mouse somatic fibroblasts. To elicit this direct conversion, we took advantage of an oriP/EBNA1-based episomal system to deliver a set of transcription factors, Gata4, Hnf1a, and Foxa3, to the fibroblasts. The established iHeps exhibit similar morphology, marker expression, and functional properties to primary hepatocytes. Furthermore, integration-free iHeps prolong the survival of fumarylacetoacetate-hydrolase-deficient (Fah(-/-)) mice after cell transplantation. Our study provides a novel concept for generating functional and expandable iHeps using a non-viral, non-integrating, plasmid-based system that could facilitate their pharmaceutical and biomedical application.
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106
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Deb S, Fremes J, Yamasaki M, Karkhanis R, Rocha R, Singh S, Desai N, Yoon B, Yoon J, Cohen E, Radhakrishnan S, Fremes S. GENDER SPECIFIC DIFFERENCES OF LONG-TERM ANGIOGRAPHIC AND CLINICAL OUTCOMES AFTER CORONARY ARTERY BYPASS GRAFTING SURGERY USING RADIAL ARTERY AND SAPHENOUS VEIN GRAFTS - INSIGHTS FROM THE MULTI-CENTRED RADIAL ARTERY PATENCY STUDY. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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107
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Yoon J, Woo J, Park J, Cho S, Lee E, Choi W, Park K, Lee H. SU-E-T-705: Skin Dosimetry Comparisons of CyberKnife and Tomotherapy for Head-And-Neck Stereotatic Body Radiotherapy. Med Phys 2015. [DOI: 10.1118/1.4925069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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108
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Cho S, Choi W, Lee H, Yoon J, Lee E, Park K, Keum K. SU-E-T-117: Analysis of the ArcCHECK Dosimetry Gamma Failure Using the 3DVH System. Med Phys 2015. [DOI: 10.1118/1.4924478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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109
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Lee H, Yoon J, Lee E, Cho S, Park K, Choi W, Baek J, Keum K, Koom W. SU-E-J-64: Feasibility Study of Surgical Clips for Fiducial Tracking in CyberKnife System. Med Phys 2015. [DOI: 10.1118/1.4924151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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110
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Yoon J, Jung J, Yeo I, Kim J, Yi B. SU-E-T-428: Feasibility Study of 4D Image Reconstruction by Organ Motion Vector Extension Based On Portal Images. Med Phys 2015. [DOI: 10.1118/1.4924789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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111
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Lee H, Yoon J, Lee E, Cho S, Park K, Choi W, Keum K. TU-F-CAMPUS-I-03: Enhancement of 4D CBCT Image Quality Using An Adaptive Prior Image Constrained Compressed Sensing. Med Phys 2015. [DOI: 10.1118/1.4925798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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112
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Yoon J, Jung J, Yi B, Kim J, Yeo I. WE-D-BRA-03: Four-Dimensional Dose Reconstruction Through Retrospective Phase Determination Using Cine Images of Electronic Portal Imaging Device. Med Phys 2015. [DOI: 10.1118/1.4925930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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113
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Kim T, Dykstra J, Porada S, van der Wal A, Yoon J, Biesheuvel P. Enhanced charge efficiency and reduced energy use in capacitive deionization by increasing the discharge voltage. J Colloid Interface Sci 2015; 446:317-26. [DOI: 10.1016/j.jcis.2014.08.041] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 08/21/2014] [Accepted: 08/23/2014] [Indexed: 11/17/2022]
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114
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Gerich M, Yoon J, Vasiliauskas E. Editorial: is thalidomide a good option for patients with refractory Crohn's disease? Authors' reply. Aliment Pharmacol Ther 2015; 41:786. [PMID: 25781039 DOI: 10.1111/apt.13136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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115
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Sugawa F, Araúzo-Bravo MJ, Yoon J, Kim KP, Aramaki S, Wu G, Stehling M, Psathaki OE, Hübner K, Schöler HR. Human primordial germ cell commitment in vitro associates with a unique PRDM14 expression profile. EMBO J 2015; 34:1009-24. [PMID: 25750208 PMCID: PMC4406649 DOI: 10.15252/embj.201488049] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 02/18/2015] [Indexed: 01/30/2023] Open
Abstract
Primordial germ cells (PGCs) develop only into sperm and oocytes in vivo. The molecular mechanisms underlying human PGC specification are poorly understood due to inaccessibility of cell materials and lack of in vitro models for tracking the earliest stages of germ cell development. Here, we describe a defined and stepwise differentiation system for inducing pre-migratory PGC-like cells (PGCLCs) from human pluripotent stem cells (PSCs). In response to cytokines, PSCs differentiate first into a heterogeneous mesoderm-like cell population and then into PGCLCs, which exhibit minimal PRDM14 expression. PGC specification in humans is similar to the murine process, with the sequential activation of mesodermal and PGC genes, and the suppression of neural induction and of de novo DNA methylation, suggesting that human PGC formation is induced via epigenesis, the process of germ cell specification via inductive signals from surrounding somatic cells. This study demonstrates that PGC commitment in humans shares key features with that of the mouse, but also highlights key differences, including transcriptional regulation during the early stage of human PGC development (3–6 weeks). A more comprehensive understanding of human germ cell development may lead to methodology for successfully generating PSC-derived gametes for reproductive medicine.
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Zeft AS, Burns JC, Yeung RS, McCrindle BW, Newburger JW, Dominguez SR, Arrington C, Shulman ST, Yoon J, Tewelde H, Mix C, Pope CA. A5.2 Kawasaki disease and exposure to fine particulate air pollution. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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117
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Kwun J, Page E, Hong JJ, Gibby A, Yoon J, Farris AB, Villinger F, Knechtle S. Neutralizing BAFF/APRIL with atacicept prevents early DSA formation and AMR development in T cell depletion induced nonhuman primate AMR model. Am J Transplant 2015; 15:815-22. [PMID: 25675879 PMCID: PMC5504528 DOI: 10.1111/ajt.13045] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 09/24/2014] [Accepted: 09/28/2014] [Indexed: 01/25/2023]
Abstract
Depletional strategies directed toward achieving tolerance induction in organ transplantation have been associated with an increased incidence and risk of antibody-mediated rejection (AMR) and graft injury. Our clinical data suggest correlation of increased serum B cell activating factor/survival factor (BAFF) with increased risk of antibody-mediated rejection in alemtuzumab treated patients. In the present study, we tested the ability of BAFF blockade (TACI-Ig) in a nonhuman primate AMR model to prevent alloantibody production and prolong allograft survival. Three animals received the AMR inducing regimen (CD3-IT/alefacept/tacrolimus) with TACI-Ig (atacicept), compared to five control animals treated with the AMR inducing regimen only. TACI-Ig treatment lead to decreased levels of DSA in treated animals at 2 and 4 weeks posttransplantation (p < 0.05). In addition, peripheral B cell numbers were significantly lower at 6 weeks posttransplantation. However, it provided only a marginal increase in graft survival (59 ± 22 vs. 102 ± 47 days; p = 0.11). Histological analysis revealed a substantial reduction in findings typically associated with humoral rejection with atacicept treatment. More T cell rejection findings were observed with increased graft T cell infiltration in atacicept treatment, likely secondary to the graft prolongation. We show that BAFF/APRIL blockade using concomitant TACI-Ig treatment reduced the humoral portion of rejection in our depletion-induced preclinical AMR model.
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118
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Gaur S, Yoon J, Moore W. Google Glass and interventional radiology: preliminary applications. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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119
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Mallari KJB, Kim H, Pak G, Aksoy H, Yoon J. A comparison of two infiltration models applied to simulation of overland flow over a two-dimensional flume. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:1325-1332. [PMID: 25945848 DOI: 10.2166/wst.2015.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
At the hillslope scale, where the rill-interrill configuration plays a significant role, infiltration is one of the major hydrologic processes affecting the generation of overland flow. As such, it is important to achieve a good understanding and accurate modelling of this process. Horton's infiltration has been widely used in many hydrologic models, though it has been occasionally found limited in handling adequately the antecedent moisture conditions (AMC) of soil. Holtan's model, conversely, is thought to be able to provide better estimation of infiltration rates as it can directly account for initial soil water content in its formulation. In this study, the Holtan model is coupled to an existing overland flow model, originally using Horton's model to account for infiltration, in an attempt to improve the prediction of runoff. For calibration and validation, experimental data from a two-dimensional flume which is incorporated with hillslope configuration have been used. Calibration and validation results showed that Holtan's model was able to improve the modelling results with better performance statistics than the Horton-coupled model. Holtan's infiltration equation, which allows accounting for AMC, provided an advantage and resulted in better runoff prediction of the model.
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Jung M, Kim H, Mallari KJB, Pak G, Yoon J. Analysis of effects of climate change on runoff in an urban drainage system: a case study from Seoul, Korea. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:653-660. [PMID: 25768210 DOI: 10.2166/wst.2014.341] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Both water quantity and quality are impacted by climate change. In addition, rapid urbanization has also brought an immeasurable loss of life and property resulting from floods. Hence, there is a need to predict changes in rainfall events to effectively design stormwater infrastructure to protect urban areas from disaster. This study develops a framework for predicting future short duration rainfall intensity and examining the effects of climate change on urban runoff in the Gunja Drainage Basin. Non-stationarities in rainfall records are first analysed using trend analysis to extrapolate future climate change scenarios. The US Environmental Protection Agency Storm Water Management Model (SWMM) was used for single event simulation of runoff quantity from the study area. For the 1-hour and 24-hour durations, statistically significant upward trends were observed. Although the 10-minute duration was only nearly significant at the 90% level, the steepest slope was observed for this short duration. Moreover, it was observed that the simulated peak discharge from SWMM increases as the short duration rainfall intensity increases. The proposed framework is thought to provide a means to review the current design of stormwater infrastructures to determine their capacity, along with consideration of climate change impact.
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121
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Jo W, Kim J, Yoon J, Jeong D, Cho S, Jeong H, Yoon YJ, Kim SC, Gho YS, Park J. Large-scale generation of cell-derived nanovesicles. NANOSCALE 2014; 6:12056-64. [PMID: 25189198 DOI: 10.1039/c4nr02391a] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Exosomes are enclosed compartments that are released from cells and that can transport biological contents for the purpose of intercellular communications. Research into exosomes is hindered by their rarity. In this article, we introduce a device that uses centrifugal force and a filter with micro-sized pores to generate a large quantity of cell-derived nanovesicles. The device has a simple polycarbonate structure to hold the filter, and operates in a common centrifuge. Nanovesicles are similar in size and membrane structure to exosomes. Nanovesicles contain intracellular RNAs ranging from microRNA to mRNA, intracellular proteins, and plasma membrane proteins. The quantity of nanovesicles produced using the device is 250 times the quantity of naturally secreted exosomes. Also, the quantity of intracellular contents in nanovesicles is twice that in exosomes. Nanovesicles generated from murine embryonic stem cells can transfer RNAs to target cells. Therefore, this novel device and the nanovesicles that it generates are expected to be used in exosome-related research, and can be applied in various applications such as drug delivery and cell-based therapy.
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122
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Gomez J, Pestilli F, Golarai G, Witthoft N, Liberman A, Yoon J, Grill-Spector K. Functionally-defined white matter selectively predicts face- and place-processing performance. J Vis 2014. [DOI: 10.1167/14.10.602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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123
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Yoon J, Jung J, Kim J, Yeo I. SU-E-T-02: 3D Dose Reconstruction of Volumetric Modulated Arc Therapy From Delivered EPID Dose Image. Med Phys 2014. [DOI: 10.1118/1.4888331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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124
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Cheong K, Lee M, Kang S, Yoon J, Park S, Hwang T, Kim H, Kim K, Han T, Bae H. SU-E-J-67: Evaluation of Breathing Patterns for Respiratory-Gated Radiation Therapy Using Respiration Regularity Index. Med Phys 2014. [DOI: 10.1118/1.4888119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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125
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Wokoma S, Lee S, Yoon J, Jung J. SU-E-T-59: Calculations of Collimator Scatter Factors (Sc) with and Without Custom-Made Build-Up Caps for CyberKnife. Med Phys 2014. [DOI: 10.1118/1.4888389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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