151
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Cho Y, Kim B, Bae H, Kim W, Baek J, Woo K, Lee G, Seol Y, Lee Y, Ku Y, Rhyu I, Ryoo H. Direct Gingival Fibroblast/Osteoblast Transdifferentiation via Epigenetics. J Dent Res 2017; 96:555-561. [PMID: 28081379 DOI: 10.1177/0022034516686745] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Alveolar bone resorption caused by trauma or periodontal diseases has represented a challenge for both dental clinicians and researchers. In this study, we evaluate the osteogenic potential of human gingival fibroblasts (HGFs) through a direct transdifferentiation from HGFs to functional osteoblasts via epigenetic modification and osteogenic signaling with bone morphogenetic protein 2 (BMP2) in vitro and in vivo. HGF treatment with 5-aza-2'-deoxycytidine (5-aza-dC) induced demethylation in the hypermethylated CpG islands of the osteogenic lineage marker genes RUNX2 and ALP, and subsequent BMP2 treatment successfully drove the fibroblasts to the osteoblasts' lineage. Cell morphological changes viewed under microscopy and alkaline phosphatase (ALP) and alizarin red S (ARS) staining confirmed the osteoblastic change mediated by epigenetic modification as did real-time polymerase chain reaction (PCR), methylation-specific PCR (MSP), and chromatin immunoprecipitation (ChIP) assay, which demonstrated the altered methylation patterns in the RUNX2 and ALP promoter regions and their effect on gene expression. Furthermore, micro-computed tomography (CT) analysis of in vivo mouse cell transplantation experiments showed high-density signal in the epigenetically modified HGF group; in addition, a significant amount of bone formation was observed in the transplanted material using hematoxylin and eosin (H&E) staining as well. Collectively, our results indicate that epigenetic modification permits the direct programming of HGFs into functional osteoblasts, suggesting that this approach might open a novel therapeutic avenue in alveolar bone regeneration.
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Affiliation(s)
- Y Cho
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea.,2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - B Kim
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - H Bae
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - W Kim
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - J Baek
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - K Woo
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - G Lee
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - Y Seol
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - Y Lee
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - Y Ku
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - I Rhyu
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - H Ryoo
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
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152
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Wirth D, Nalliah C, Wong G, Voskoboinik A, Pathik B, Prabhu S, Morton J, Lee G, Joseph S, Ling H, Goldin J, Kee K, Kistler P, Sanders P, Kalman J. Obstructive Sleep Apnoea in Patients Having Atrial Fibrillation Ablation: Prevalence, Severity and Association with Arrhythmia Phenotype. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.329] [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: 11/28/2022]
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153
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Prabhu S, Costello B, Voskoboinik A, Mclellan A, Peck K, Pathik B, Nalliah C, Wong G, Azzopardi S, Lee G, Gutman S, Mariani J, Ling L, Taylor A, Kalman J, Kistler P. Ventricular Fibrosis Improves Following AF Ablation in Patients with Persistent AF and Heart Failure. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.254] [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: 11/30/2022]
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154
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Nalliah C, Wong G, Voscoboinik A, Pathil B, Prabhu S, Wirth D, Morton J, Goldin J, Joseph S, Kee K, Lee G, Ling H, Kistler P, Sanders P, Kalman J. Ultra High Density Mapping Reveals Regional Conduction Slowing in Obstructive Sleep Apnoea. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.346] [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: 10/19/2022]
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155
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Pathik B, Lee G, Sacher F, Jais P, Massoullie G, Derval N, Bates M, Lipton J, Joseph S, Morton J, Sparks P, Kistler P, Kalman J. Ultra High-Density Three Dimensional Electroanatomical Mapping Demonstrates Conduction and Substrate Variability in Right Atrial Flutter. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.347] [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: 11/27/2022]
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156
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Prabhu S, McLellan A, Voskoboinik A, Peck K, Pathik B, Nalliah C, Wong G, Mariani J, Lee G, Ling L, Taylor A, Kalman J, Kistler P. Pulmonary Vein Activity in Systolic Heart Failure and Persistent Atrial Fibrillation. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.293] [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: 11/28/2022]
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157
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Prabhu S, Voskoboinik A, Mclellan A, Peck K, Nalliah C, Wong G, Azzopardi S, Lee G, Mariani J, Ling L, Taylor A, Kalman J, Kistler P. A Comparison of the Electrophysiologic and Electroanatomic Characteristics Between the Right and Left Atrium in Persistent Atrial Fibrillation: Is the Right Atrium a Window into the Left? Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.304] [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: 10/19/2022]
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158
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Prabhu S, Kalla M, Voskoboinik A, Mclellan A, Peck K, Pathik B, Nalliah C, Wong G, Azzopardi S, Lee G, Mariani J, Ling L, Taylor A, Kalman J, Kistler P. Rapid Pulmonary Vein Firing Does Not Predict AF Ablation Outcome in Persistent AF. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.334] [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: 10/19/2022]
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159
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Pathik B, Kalman J, Walters T, Kuklik P, Zhao J, Madry A, Prabhu S, Nalliah C, Kistler P, Lee G. Transient Rotor Activity Using Novel Prolonged 3D Phase Mapping in Human Persistent Atrial Fibrillation. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.301] [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: 10/19/2022]
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160
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Anderson R, Kalla M, Lee G, Kalman J. Ultra High Density Mapping of Scleroderma VT. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.345] [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: 11/28/2022]
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161
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Wong G, Nalliah C, Voskoboinik A, Pathik B, Prabhu S, Ling L, Lee G, Morton J, Kistler P, Kalman J. High Density Mapping of Atrial Fibrillation: Regional Atrial Substrate Abnormalities and Implications for Substrate Ablation. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.320] [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: 10/19/2022]
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162
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Prabhu S, Voskoboinik A, Mclellan A, Peck K, Pathik B, Nalliah C, Wong G, Azzopardi S, Lee G, Mariani J, Ling L, Taylor A, Kalman J, Kistler P. Systolic Heart Failure is Associated with More Advanced Bi-Atrial Substrate Independent of AF Duration in Persistent AF. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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163
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Kjaerulf F, Lee B, Cohen L, Donnelly P, Turner S, Davis R, Realini A, Moloney-Kitts M, Gordon R, Lee G, Gilligan J. The 2030 agenda for sustainable development: a golden opportunity for global violence prevention. Int J Public Health 2016; 61:863-864. [PMID: 27771749 DOI: 10.1007/s00038-016-0887-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 08/23/2016] [Indexed: 11/24/2022] Open
Affiliation(s)
- Finn Kjaerulf
- DIGNITY-Danish Institute Against Torture, Bryggervangen 55, 2100, Copenhagen, Denmark.
| | - B Lee
- Yale University, 34 Park Street, New Haven, USA
| | - L Cohen
- Prevention Institute, 221 Oak Street, Oakland, CA, USA
| | - P Donnelly
- Public Health Ontario, 480 University Avenue, suite 300, Toronto, ON, Canada
| | - S Turner
- Prevention of Violence Canada, 2102 Sutherland Road, Victoria, BC, Canada
| | - R Davis
- Prevention Institute, 221 Oak Street, Oakland, CA, USA
| | - A Realini
- Prevention Institute, 221 Oak Street, Oakland, CA, USA
| | | | - R Gordon
- Together for Girls, New York, USA
| | - G Lee
- Yale University, 34 Park Street, New Haven, USA
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164
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Park D, Lee G, Kim H, Ryu J. The development of new equations to estimate ventilator setting in patients with neuromuscular disease. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.431] [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: 11/30/2022]
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165
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Lee G, Dinniwell R, Fyles T, Conrad T, Han K, Levin W, Liu F, Lofgren S, Koch-Fitsialos A, Devins G, Emad N, Pitcher B, Panzarella T, Koch A. Patient Experience Survey of Early-Stage Breast Cancer Patients Undergoing Whole-Breast Radiation Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1629] [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]
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166
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Lee G, Dinniwell R, Liu FF, Fyles A, Han K, Conrad T, Levin W, Marshall A, Purdie TG, Koch CA. Building a New Model of Care for Rapid Breast Radiotherapy Treatment Planning: Evaluation of the Advanced Practice Radiation Therapist in Cavity Delineation. Clin Oncol (R Coll Radiol) 2016; 28:e184-e191. [PMID: 27542573 DOI: 10.1016/j.clon.2016.07.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 04/21/2016] [Revised: 06/22/2016] [Accepted: 06/24/2016] [Indexed: 11/15/2022]
Abstract
AIMS Breast radiotherapy treatment is commonly managed by a multidisciplinary team to ensure optimal delivery of care. We sought a new model of care whereby a clinical specialist radiation therapist (CSRT) delineates the cavity target for whole breast radiotherapy treatment planning and the radiation oncologist validates the contour during final plan review. This study evaluated the radiation oncologist's acceptance of these contours and identified characteristics of cavities suitable for CSRT-directed contouring. MATERIALS AND METHODS Following specialised breast oncology education and training by the radiation oncologist, the CSRT prospectively delineated cavities in 30 tangential breast radiotherapy cases and consulted the radiation oncologist in 'complex' cases but directed 'non-complex' cases for treatment planning. Changes to CSRT contours were evaluated using the conformity index. Breast density, time since surgery and cavity location, size and visualisation score [CVS: range 1 (no visible cavity) to 5 (homogenous cavity)] were captured. RESULTS Of the 30 CSRT delineated cavities contours, the CSRT directed 20 (66.7%) cases for planning without radiation oncology review; 19 were accepted (without changes) by the radiation oncologist upon final plan review and one was changed by the radiation oncologist (conformity index = 0.93) for boost treatment and did not affect the tangential treatment plan. Ten (33.3%) cases, all CVS ≤ 3, were reviewed with the radiation oncologist before planning (conformity index = 0.88 ± 0.12). CVS was inversely correlated with breast density and cavity size (P < 0.01). CONCLUSIONS The CSRT delineated cavities appropriate for clinical radiotherapy treatment planning in women with well-visualised cavities, whereas 'complex' cases with dense breast parenchyma, CVS ≤ 3, and/or cases needing boost radiotherapy treatment required review with the radiation oncologist before planning.
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Affiliation(s)
- G Lee
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada
| | - R Dinniwell
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - F F Liu
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - A Fyles
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - K Han
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - T Conrad
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - W Levin
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - A Marshall
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada
| | - T G Purdie
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - C A Koch
- Radiation Medicine Program, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada.
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167
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Prabhu S, Mackin V, McLellan A, Phan T, MGlade D, Pathik B, Nalliah C, Voskoboinik A, Azzopardi S, Lee G, Mariani J, Taylor A, Kalman J, Kistler P. Determining the Dose of Adenosine for Dormant Pulmonary Vein Conduction Following AF Ablation: Electrophysiological and Haemodynamic Assessment. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.336] [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: 11/30/2022]
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168
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Prabhu S, McLellan A, Pathik B, Nalliah C, Alexandr A, Azzopardi S, Mariani J, Ling L, Lee G, Taylor A, Kalman J, Kistler P. Bi-Atrial Electroanatomic Mapping in Persistent AF: Does the Right Atrium Represent the Left? Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.330] [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: 10/21/2022]
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169
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Pathik B, Walters T, Kuklik P, Zhao Z, Madry A, Morris G, Prabhu S, Nalliah C, Lipton J, Morton J, Sparks P, Kistler P, Kalman J, Lee G. The Efficacy of Multipolar Basket Catheters in Mapping the Entire Left Atrium in Human Persistent Atrial Fibrillation. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.319] [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: 10/21/2022]
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170
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Nalliah C, Walters T, Pathik B, Prabhu S, Kuklik P, Zhao J, Madry A, Kistler P, Kalman J, Lee G. Extended High Density Epicardial Phase Mapping of Persistent Atrial Fibrillation in the Human Left Atrium: High Prevalence of Transient Rotational Activity. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.342] [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: 10/21/2022]
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171
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Pathik B, Lee G, Bates M, Lipton J, Prabhu S, Nalliah C, Sparks P, Morton J, Kistler P, Kalman J. Can We Always Believe what We See? Entrainment Remains Important for Diagnosis of Atrial Macro-Reentry in the Era of High Density 3D Mapping. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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172
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Prabhu S, McLellan A, Voskoboinik A, Pathik B, Nalliah C, Azzopardi S, Lee G, Mariani J, Taylor A, Kalman J, Kistler P. The Pulmonary Venous Antrum in Patients with Persistent AF and Heart Failure - Electrophysiologic and Electroanatomic Mapping. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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173
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Honeybul S, Damodaran O, Lind C, Lee G. Malignant cerebral swelling following cranioplasty. J Clin Neurosci 2016; 29:3-6. [DOI: 10.1016/j.jocn.2016.01.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 01/09/2016] [Accepted: 01/17/2016] [Indexed: 11/29/2022]
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174
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Dikranian A, Galloway J, Kekow J, Zerbini C, de la Vega M, Lee G, Maniccia A, Bananis E, Ponce de Leon D, Gibofsky A. SAT0640-HPR Understanding The Importance of A Patient's Role in The Management of RA: Physician- and Patient-Based Survey Results Developed by The RA Narrative Advisory Panel. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3220] [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: 11/03/2022]
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175
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Young S, Lo P, Hoffman J, Kim H, Hsu W, Flores C, Lee G, Brown M, McNitt-Gray M. TH-AB-207A-12: CT Lung Cancer Screening and the Effects of Further Dose Reduction On CAD Performance. Med Phys 2016. [DOI: 10.1118/1.4958088] [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: 11/07/2022] Open
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176
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Abstract
The junctional epithelium (JE) is unique with regard to its wide intercellular spaces and sparsely developed intercellular junctions. Thus, knowledge of the molecular mechanisms that regulate the formation of the intercellular junctions of the junctional epithelium may be essential to understand the pathophysiology of the JE. HOK-16B cells, a normal human gingival epithelial cell line, were used to identify the molecules involved in the regulation of the formation of intercellular E-cadherin junctions between human gingival epithelial cells. Activation of c-Jun N-terminal kinase (JNK) disrupted the intercellular junctions through the dissociation of E-cadherin. The role of JNK in the formation of these E-cadherin junctions was further confirmed by demonstrating that JNK inhibition induced the formation of intercellular E-cadherin junctions. The upstream signaling of JNK was also examined. Activation of the small GTPase RhoA disrupted the formation of E-cadherin junctions between HOK-16B cells, which was accompanied by JNK activation. Disruption of these intercellular junctions upon RhoA activation was prevented when JNK activity was inhibited. In contrast, RhoA inactivation led to HOK-16B cell aggregation and the formation of intercellular junctions, even under conditions in which the cellular junctions were naturally disrupted by growth on a strongly adhesive surface. Furthermore, the JE of mouse molars had high JNK activity associated with low E-cadherin expression, which was reversed in the other gingival epithelia, including the sulcular epithelium. Interestingly, JNK activity was increased in cells grown on a solid surface, where cells showed higher RhoA activity than those grown on soft surfaces. Together, these results indicate that the decreased formation of intercellular E-cadherin junctions within the JE may be coupled to high JNK activity, which is activated by the upregulation of RhoA on solid tooth surfaces.
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Affiliation(s)
- G. Lee
- Laboratory for the Study of Molecular Biointerfaces, Department of Oral Histology and Developmental Biology, Program of Cell and Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - H.J. Kim
- Laboratory for the Study of Molecular Biointerfaces, Department of Oral Histology and Developmental Biology, Program of Cell and Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - H.-M. Kim
- Laboratory for the Study of Molecular Biointerfaces, Department of Oral Histology and Developmental Biology, Program of Cell and Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
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177
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Lee G, Lalani N, Emad N, Gill B, Panzarella T, Koch C. Prospective Evaluation of Normal Tissue Toxicity Associated With Breast Boost in Early-Stage Breast Cancer Radiation Therapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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178
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Abstract
Cyclophosphamide (CYP) induces urothelial injury and causes excretion of cellular exudates at 24 h, followed by rapid restoration at 72 h. We investigated the role of urinary uroplakin II (UPII) levels in a CYP-induced cystitis model. For the purpose of this study, 10 controls and 26 CYP-injected female Sprague Dawley rats were killed at 24 h and 72 h postinjection. The vesical weight, severity of hematuria, and expression of UPII in the urinary bladder and urine were measured. CYP decreased the level of vesical UPII messenger RNA at 24 h, followed by rapid recovery at 72 h. Contrary to the negligible levels of urinary UPII and hematuria in controls, CYP treatment abruptly increased the excretion of urinary UPII at 24 h. The excretion had subsided at 72 h. Similarly, severe hematuria was observed at 24 h, with improvement at 72 h. However, some rats still exhibited hematuria at 72 h. CYP caused increase in vesical weight. The vesical weight at 24 h after CYP injection was negatively correlated with the vesical UPII level. Rats with significant hematuria demonstrated higher urinary UPII levels than those with insignificant hematuria. Vesical UPII could be an important barrier for early CYP-related injury, while the levels of urinary UPII may be associated with the severity of hematuria during dynamic periods in the urothelium.
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Affiliation(s)
- H Park
- Department of Urology, Dankook University College of Medicine, Cheonan, Korea
| | - Y S Kyung
- Department of Health Screening and Promotion Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - G Lee
- Department of Urology, Dankook University College of Medicine, Cheonan, Korea
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179
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Algan O, Hossain S, Lee G, Ahmad S. SU-E-T-701: Single Isocenter Volumetric Modulated Arc Therapy (VMAT) With Or Without Field Overlap in the Treatment of Left Sided Breast and Regional Lymphatic Tissue: Impact On Surrounding OAR Doses. Med Phys 2015. [DOI: 10.1118/1.4925065] [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: 11/07/2022] Open
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180
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Lee G, Algan O, Keeling V, Higby C, Ahmad S, Hossain S. SU-E-T-700: Single Isocenter Volumetric Modulated Arc Therapy (VMAT) and Intensity Modulated Radiotherapy (IMRT) for Intact Left Breast Cancer Patients with Internal Mammary (IM) and Supraclavicular (S/C) Nodes - a Treatment Planning Study. Med Phys 2015. [DOI: 10.1118/1.4925064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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181
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Harris FJ, DeMaria AN, Lee G, Miller RR, Amsterdam EA, Mason DT. Value and limitations of exercise testing in detecting coronary disease with normal and abnormal resting electrocardiograms. Adv Cardiol 2015:11-5. [PMID: 619512 DOI: 10.1159/000401012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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182
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183
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DeMaria AN, Angel J, Neumann A, Lee G, Amsterdam EA, Mason DT. Noninvasive echocardiographic index for determining prognosis in acute myocardial infarction. Adv Cardiol 2015:65-70. [PMID: 619524 DOI: 10.1159/000401017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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184
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Abstract
Bedside right heart catheterization in patients with acute myocardial infarction and hemodynamic dysfunction provides a rational basis for therapy aimed at maximizing cardiac performance and limiting infarct size. Readily performed and associated with minimal risk, this diagnostic approach is primarily indicated when myocardial infarction is associated with evidence of hemodynamic dysfunction. It affords precise information on cardiac performance and prognosis, allows identification of specific complications such as ventricular septal defect and acute mitral regurgitation, and is of critical importance in selection of therapy. Hemodynamic monitoring is also essential for safe, effective application of certain forms of treatment such as vasodilator therapy for the failing ventricle.
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185
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Lee S, Lee G, Choi IC, Rho JY. Development of PCR diagnostic system for detection of the seed-transmitted tobacco ringspot virus in quarantine. Indian J Microbiol 2015; 55:231-233. [PMID: 25805911 DOI: 10.1007/s12088-015-0518-8] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Accepted: 02/12/2015] [Indexed: 10/23/2022] Open
Abstract
Tobacco ringspot virus (TRSV) is a plant quarantine virus in Korea. As such, a TRSV examination is conducted when importing various crops. In this study, RT-PCR and nested PCR systems for TRSV detection in quarantine sites, and the modified-positive control plasmid for proving laboratory contamination and false positive reactions were developed. The developed diagnostic system was used to detect TRSV in the quarantine site. It revealed that from 2012 to August 2014, a total of 12 cases were detected in imported various crops. The system is expected to continue contributing to TRSV detection in plant quarantine.
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Affiliation(s)
- S Lee
- Environmental Infrastructure Research Department, National Institute of Environmental Research, Incheon, 440-170 Korea
| | - G Lee
- Environmental Infrastructure Research Department, National Institute of Environmental Research, Incheon, 440-170 Korea
| | - I C Choi
- Environmental Infrastructure Research Department, National Institute of Environmental Research, Incheon, 440-170 Korea
| | - J Y Rho
- Department of Microbiology, College of Natural Sciences, Dankook University, Cheonan, 330-714 Korea
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186
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Lee K, Choi S, Choi LM, Lee J, Kim JH, Chung G, Lee G, Choi SY, Park K. Desipramine inhibits salivary Ca(2+) signaling and aquaporin translocation. Oral Dis 2015; 21:530-5. [PMID: 25639149 DOI: 10.1111/odi.12317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 01/19/2015] [Accepted: 01/20/2015] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Desipramine is a tricyclic antidepressant with a negative side effect of dry mouth. The Na(+) /H(+) exchanger was suggested to be a target of desipramine in salivary gland cells. However, it is unclear whether desipramine has other targets in the salivary secretion pathway. Here, we studied the effect of desipramine on salivary Ca(2+) signaling. MATERIALS AND METHODS Cytosolic free Ca(2+) concentration ([Ca(2+) ]i ) was determined with the fluorescent Ca(2+) indicator fura-2/AM. Aquaporin translocation was analyzed by Western blotting and immunocytochemistry of confocal microscopy. RESULTS Desipramine inhibited the carbachol- and histamine-mediated increase in cytosolic Ca(2+) ([Ca(2+) ]i ) in a concentration-dependent manner. However, desipramine did not affect increases in [Ca(2+) ]i mediated by extracellular ATP, sphingosine-1-phosphate, or thapsigargin. The adrenergic receptor blockers prazosin and propranolol did not reverse the desipramine-mediated inhibition of carbachol- and histamine-induced increases in [Ca(2+) ]i . We also found that desipramine inhibits the increase in membrane aquaporin-5 level triggered by carbachol and histamine treatments. CONCLUSIONS These results imply that desipramine blocks muscarinic and histamine receptor-mediated Ca(2+) signaling and the subsequent translocation of aquaporin-5 in human salivary gland cells, suggesting a novel mechanism for the xerogenic effects of desipramine.
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Affiliation(s)
- K Lee
- Department of Physiology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea
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187
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Doi A, Lee G, Snell G, Bloch M, Summerhayes R, Marasco S. Lung transplantation as rescue therapy in patients too sick to be discharged from acute care. Transplant Proc 2015; 46:256-9. [PMID: 24507062 DOI: 10.1016/j.transproceed.2013.08.107] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 08/19/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND There is an increasing demand for lung transplantation in patients in advanced respiratory failure. Although many of these patients do not require mechanical ventilation or extracorporeal membrane oxygenation, an increasing number are critically ill. In this single-center study, we have analyzed our experience with lung transplantation in subjects who were inpatients at the time of their transplant and not expected to survive to discharge. METHODS Between July 2006 and March 2012, we performed 274 bilateral sequential lung transplants and 34 single-lung transplants. Twenty-six patients who were inpatients at the time of their transplant, and were not expected to survive to hospital discharge, formed the inpatient group in this retrospective review. The remaining 281 outpatient lung transplant patients formed the comparison group. RESULTS The inpatient group spent significantly fewer days on the waiting list compared to the outpatient group. Postoperative survival was significantly poorer in the inpatient group compared to the outpatient group (P = .001), and this was most noticeable in the first 90 days. There was no significant difference in survival between the inpatient transplant cohort and a historically comparable wait list cohort (P = .614). CONCLUSION Lung transplantation in critically ill inpatients, although associated with a survival advantage compared to not transplanting them, does give poorer survival results compared to postoperative survival in outpatient patients.
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Affiliation(s)
- A Doi
- Cardiothoracic Surgery Unit, The Alfred Hospital, Melbourne, Australia
| | - G Lee
- Cardiothoracic Surgery Unit, The Alfred Hospital, Melbourne, Australia
| | - G Snell
- Lung Transplant Service, The Alfred Hospital, Melbourne, Australia
| | - M Bloch
- Cardiothoracic Surgery Unit, The Alfred Hospital, Melbourne, Australia
| | - R Summerhayes
- Cardiothoracic Surgery Unit, The Alfred Hospital, Melbourne, Australia
| | - S Marasco
- Cardiothoracic Surgery Unit, The Alfred Hospital, Melbourne, Australia; Department of Surgery, Monash University, Melbourne, Australia.
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188
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McLellan A, Prabhu S, Voskoboinik A, Wong M, Walters T, Pathik B, Morris G, Nisbet A, Lee G, Morton J, Kalman J, Kistler P. Isolation of the posterior left atrial wall for patients with persistent atrial fibrillation: Impact of adenosine testing for dormant posterior LA conduction. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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189
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Walters T, Lee G, Spence S, Larobina M, Atkinson V, Goldblatt J, Kalman J. Temporal stability of the atrial fibrillation cycle length in persistent human atrial fibrillation and its relationship to drivers: a high density epicardial mapping study. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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190
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McLellan A, Ling L, Azzopardi S, Lee G, Lee G, Kumar S, Wong M, Walters T, Lee J, Halloran K, Stiles M, Lever N, Fynn S, Heck P, Sanders P, Morton J, Kalman J, Kistler P. A minimal or maximal ablation strategy to achieve pulmonary vein isolation for paroxysmal atrial fibrillation: a prospective multi-centre randomised controlled trial (the Minimax Study). Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.294] [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: 11/28/2022]
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191
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Walters T, Nisbet A, Morris G, Tan G, Mearns M, Morton J, Joseph S, Lee G, Kistler P, Kalman J. Progression of atrial remodelling in patients with high burden AF: implications for early ablative intervention. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.005] [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: 11/30/2022]
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192
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Wong M, Kalman J, Pedagogos E, Toussaint N, Vohra J, Sparks P, Sanders P, Kistler P, Halloran K, Lee G, Joseph S, Morton J. Long term prevalence and follow up of atrial fibrillation in chronic kidney disease. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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193
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Walters T, Lee G, Spence S, Larobina M, Atkinson V, Goldblatt J, Kalman J. Temporal stability of rotors and atrial activation patterns in persistent human atrial fibrillation: A high density epicardial mapping study. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.326] [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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194
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Prabhu S, Ling L, Hunter R, Schilling R, McLellan A, Earley M, Sporton S, Voskoboinik A, Nanayakkara S, Mariani J, Lee G, Kistler P. A multicentre study of AF ablation outcomes in patients with concurrent left ventricular dysfunction - aetiology of cardiomyopathy determines outcome. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.295] [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: 11/30/2022]
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195
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Wong M, Kalman J, Pedagogos E, Toussaint N, Vohra J, Sparks P, Sanders P, Kistler P, Halloran K, Lee G, Joseph S, Morton J. Autonomic tone and ventricular repolarisation characteristics in renal transplant recipients. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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196
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Wong M, Kalman J, Pedagogos E, Toussaint N, Vohra J, Sparks P, Sanders P, Kistler P, Halloran K, Lee G, Joseph S, Morton J. Long-term follow up of arrhythmic events in chronic kidney disease. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.637] [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: 11/30/2022]
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197
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Baek J, Kim Y, Lee G, Lee W. 239. A multivariate analysis of risk factors associated with permanent ileostomy following sphincter-preserving surgery for rectal cancer. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.232] [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: 11/17/2022] Open
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198
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Auffinger B, Tobias A, Han Y, Lee G, Guo D, Dey M, Lesniak M, Ahmed A. SC-02 * CONVERSION OF DIFFERENTIATED CANCER CELLS INTO CANCER STEM-LIKE CELLS IN A GLIOBLASTOMA MODEL AFTER PRIMARY CHEMOTHERAPY. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou275.2] [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: 11/15/2022] Open
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199
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Balyasnikova I, Dey M, Tobias A, Kanojia D, Lee G, Han Y, Zhang L, Ahmed A, Aboody K, Lesniak M. ET-05 * INTRANASAL DELIVERY OF NEURAL STEM CELLS LOADED WITH ONCOLYTIC ADENOVIRUS EXTENDS SURVIVAL OF MICE WITH INTRACRANIAL GLIOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou255.5] [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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200
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Jo YJ, Park J, Lee G, Eom MJ, Choi ES, Shim JH, Kang W, Kim JS. Valley-polarized interlayer conduction of anisotropic Dirac fermions in SrMnBi2. Phys Rev Lett 2014; 113:156602. [PMID: 25375728 DOI: 10.1103/physrevlett.113.156602] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Indexed: 06/04/2023]
Abstract
We report the valley-selective interlayer conduction of SrMnBi(2) under in-plane magnetic fields. The c-axis resistivity of SrMnBi(2) shows clear angular magnetoresistance oscillations indicating coherent interlayer conduction. Strong fourfold variation of the coherent peak in the c-axis resistivity reveals that the contribution of each Dirac valley is significantly modulated by the in-plane field orientation. This originates from anisotropic Dirac Fermi surfaces with strong disparity in the momentum-dependent interlayer coupling. Furthermore, we found a signature of broken valley symmetry at high magnetic fields. These findings demonstrate that a quasi-two-dimensional anisotropic Dirac system can host a valley-polarized interlayer current through magnetic valley control.
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Affiliation(s)
- Y J Jo
- Department of Physics, Kyungpook National University, Daegu 702-710, Korea
| | - Joonbum Park
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - G Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Man Jin Eom
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - E S Choi
- National High Magnetic field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - Ji Hoon Shim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - W Kang
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Jun Sung Kim
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea
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