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Alkadhimi A, Chung M, Sidebottom A. Frontal lobe abscess due to orbital roof blow out fracture. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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77
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Cho H, Sengupta S, Jeon SSH, Hur W, Choi HG, Seo HS, Lee BJ, Kim JH, Chung M, Jeon NL, Kim ND, Sim T. Identification of the First Selective Activin Receptor-Like Kinase 1 Inhibitor, a Reversible Version of L-783277. J Med Chem 2017; 60:1495-1508. [PMID: 28103025 DOI: 10.1021/acs.jmedchem.6b01679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We synthesized 1 (San78-130), a reversible version of L-783277, as a selective and potent ALK1 inhibitor. Our study showed that 1 possesses great kinase selectivity against a panel of 342 kinases and more potent activity against ALK1 than L-783277. Among the six ALK isotypes (ALK1-6), ALK1 is most significantly inhibited by compound 1. Compound 1 suppresses the BMP9-induced Smad1/5 pathway by mainly inhibiting ALK1 in C2C12 cells. Our molecular dynamics simulations suggest that H-bonding interaction between the C-4' hydroxyl group of 1 and Arg334 of ALK1 substantially contributes to the ALK1 inhibition. To the best of our knowledge, 1 is the first selective ALK1 inhibitor. Furthermore, compound 1 promoted angiogenesis in both endothelial tube formation and microfluidic chip based 3D angiogenesis assays, suggesting that 1 could be a lead compound for therapeutic angiogenesis agents. Our study may provide an insight into designing selective and potent inhibitors against ALK1.
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78
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Kim S, Chung M, Ahn J, Lee S, Jeon NL. Interstitial flow regulates the angiogenic response and phenotype of endothelial cells in a 3D culture model. LAB ON A CHIP 2016; 16:4189-4199. [PMID: 27722679 DOI: 10.1039/c6lc00910g] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A crucial yet ill-defined phenomenon involved in the remodeling of vascular networks, including angiogenic sprouting, is flow-mediated endothelial dynamics and phenotype changes. Despite interstitial flow (IF) being ubiquitously present in living tissues surrounding blood capillaries, it is rarely investigated and poorly understood how endothelial cells respond to this flow during morphogenesis. Here we develop a microfluidic 3D in vitro model to investigate the role of IF during vasculogenic formation and angiogenic remodeling of microvascular networks. In the presented model, human blood endothelial cells co-cultured with stromal fibroblasts spontaneously organize into an interconnected microvascular network and then further expand to adjacent avascular regions in a manner of neovessel sprouting. We found that in the presence of IF, vasculogenic organization of the microvascular network was significantly facilitated regardless of the flow direction, whereas angiogenic sprouting was promoted only when the directions of flow and sprouting were opposite while angiogenic activity was suppressed into the direction of flow. We also observed that the vasculatures switch between active angiogenic remodeling and quiescent/non-sprouting state in the contexts provided by IF. This regulatory effect can be utilized to examine the role of anti-angiogenic compounds, clearly distinguishing the differential influences of the compounds depending on their mechanisms of action. Collectively, these results suggest that IF may serve as a critical regulator in tissue vascularization and pathological angiogenesis.
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Araujo Júnior E, Tonni G, Chung M, Ruano R, Martins WP. Perinatal outcomes and intrauterine complications following fetal intervention for congenital heart disease: systematic review and meta-analysis of observational studies. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2016; 48:426-433. [PMID: 26799734 DOI: 10.1002/uog.15867] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 01/13/2016] [Accepted: 01/18/2016] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To assess perinatal outcomes and intrauterine complications following fetal intervention for congenital heart disease (CHD). METHODS A systematic review and meta-analysis were performed following an electronic search of PubMed and Scopus databases (last searched August 2015). Perinatal outcomes that were assessed included fetal death, live birth, preterm delivery < 37 weeks' gestation and neonatal death. Intrauterine complications that were assessed included bradycardia requiring treatment and hemopericardium requiring drainage. Estimated proportions were reported as mean (95% CI). Inconsistency was assessed using the I2 statistic. RESULTS An electronic search identified 2279 records, of which 29 studies (11 retrospective cohort and 18 case reports) were considered eligible for analysis. Fetal death after treatment of CHD by aortic valvuloplasty was reported in three studies, with a rate of 31% (95% CI, 9-60%), after pulmonary valvuloplasty in one study, with a rate of 25% (95% CI, 10-49%), after septoplasty in one study, with a rate of 14% (95% CI, 6-28%) and after pericardiocentesis and/or pericardioamniotic shunt placement in 24 studies, with a rate of 29% (95% CI, 18-41%). Bradycardia requiring treatment was reported after aortic valvuloplasty in two studies, with a rate of 52% (95% CI, 16-87%), after pulmonary valvuloplasty in one study, with a rate of 44% (95% CI, 23-67%), and after septoplasty in one study, with a rate of 27% (95% CI, 15-43%). CONCLUSIONS Current evidence on the effectiveness of prenatal intervention for CHD derives mostly from case reports and a few larger series; no study was randomized. Although the results of the meta-analysis are encouraging in terms of perinatal survival, they should be interpreted with caution when comparing with procedures performed after delivery. Copyright © 2016 ISUOG. Published by John Wiley & Sons Ltd.
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80
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Lee S, Kwon SS, Park M, Chung M, Kim K, Koo S, Lee K. Is there a Relationship between Bone Morphology and Injured Ligament on Imaging Studies and Laxity on Ankle Stress Radiographs? Int J Sports Med 2016; 37:1080-1086. [DOI: 10.1055/s-0042-106300] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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81
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Koo J, Yoon M, Chung W, Chung M, Kim D. SU-F-T-244: Radiotherapy Risk Estimation Based On Expert Group Survey. Med Phys 2016. [DOI: 10.1118/1.4956384] [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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82
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Moon S, Yoon M, Chung W, Chung M, Kim D. SU-F-T-17: A Feasibility Study for the Transit Dosimetry with a Glass Dosimeter in Brachytherapy. Med Phys 2016. [DOI: 10.1118/1.4956151] [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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83
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Kim D, Yoon M, Chung W, Chung M. SU-F-T-329: Characteristic Study of a Rado-Photoluminescenct Glass Dosimeter with Accumulated Dose. Med Phys 2016. [DOI: 10.1118/1.4956514] [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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84
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Ryu H, Chung M, Dobrzyński M, Fey D, Blum Y, Sik Lee S, Peter M, Kholodenko BN, Li Jeon N, Pertz O. Frequency modulation of ERK activation dynamics rewires cell fate. Mol Syst Biol 2016; 12:866. [PMID: 27107015 PMCID: PMC4848760 DOI: 10.15252/msb.20166982] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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85
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Moon S, Yoon M, Chung M, Chung W, Kim D. PO-0897: Comparison of hippocampus sparing extent according to the tilt of a patient head during WBRT. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32147-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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86
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Jeong S, Yoon M, Kim D, Chung W, Chung M. EP-1557: Development of dose calculation algorithm in homogeneous phantom through the transit dose. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32807-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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87
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Pillai R, McLennan G, Chung M, Warhadpande S, Kalra-Lall A. The makings of an ideal interventional radiology clinical clerkship: survey results of medical students and interventional radiology educators to improve medical student training in preparation for the IR/DR residency. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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88
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Arutunian SG, Chung M, Harutyunyan GS, Margaryan AV, Lazareva EG, Lazarev LM, Shahinyan LA. Fast resonant target vibrating wire scanner for photon beam. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:023108. [PMID: 26931835 DOI: 10.1063/1.4941837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We propose a new type of wire scanner for beam profile measurements, based on the use of a vibrating wire as a scattering target. Synchronous measurements with the wire oscillation allow to detect only the signal coming from the scattering of the beam on the wire. This resonant method enables fast beam profiling in the presence of a high level of background. The developed wire scanner, called resonant target vibrating wire scanner, is applied to photon beam profiling, in which the photons reflected on the wire are measured by a fast photodiode. In addition, the proposed measurement principle is expected to monitor other types of beams as well, such as neutrons, protons, electrons, and ions.
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Ryu H, Chung M, Dobrzyński M, Fey D, Blum Y, Lee SS, Peter M, Kholodenko BN, Jeon NL, Pertz O. Frequency modulation of ERK activation dynamics rewires cell fate. Mol Syst Biol 2015; 11:838. [PMID: 26613961 PMCID: PMC4670727 DOI: 10.15252/msb.20156458] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Transient versus sustained ERK MAP kinase (MAPK) activation dynamics induce proliferation versus differentiation in response to epidermal (EGF) or nerve (NGF) growth factors in PC‐12 cells. Duration of ERK activation has therefore been proposed to specify cell fate decisions. Using a biosensor to measure ERK activation dynamics in single living cells reveals that sustained EGF/NGF application leads to a heterogeneous mix of transient and sustained ERK activation dynamics in distinct cells of the population, different than the population average. EGF biases toward transient, while NGF biases toward sustained ERK activation responses. In contrast, pulsed growth factor application can repeatedly and homogeneously trigger ERK activity transients across the cell population. These datasets enable mathematical modeling to reveal salient features inherent to the MAPK network. Ultimately, this predicts pulsed growth factor stimulation regimes that can bypass the typical feedback activation to rewire the system toward cell differentiation irrespective of growth factor identity.
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Woeste G, Juratli MA, Habbe N, Hannes S, El Youzouri H, Bechstein WO, Trombetta F, Moscato R, Ciamporcero T, Ghiglione F, Morino M, Tahir S, Baldjiev T, Goshev G, Pachoov N, Eftimov E, Kovachevski S, Smirnoff A, Roth JS, Wennergren J, Plymale MA, Zachem A, Davenport DL, Mangiante G, Passeri V, deManzoni G, Kaufmann R, Jairam AP, Mulder IM, Wu Z, Verhelst J, Vennix S, Giessen LJX, Jeekel J, Lange JF, Di Cerbo F, Ikhlawi K, Baladov M, Agha A, Iesalnieks I, Franklin M, Hernandez M, Glass J, Glover M, Gruber-Blum S, Fortelny R, May C, Glaser K, Redl H, Petter-Puchner A, Grossi J, Cavazzola LT, Tezza SLT, Nery LA, Zortea J, Roll S, Gorganchian F, Santa Maria V, Zuvela M, Galun D, Petrovic J, Micev M, Palibrk I, Bidzic N, Colozzi S, Clementi M, Cianca G, Giuliani A, Carlei F, Schietroma M, Amicucci G, Chung M, Cerasani N, Meyer J, Bulian DR, Heiss MM, Kocaay AF, Eker T, Celik SU, Akyol C, Cakmak A. Topic: Abdominal Wall Hernia - Abdominal wall closure. Hernia 2015; 19 Suppl 1:S198-205. [PMID: 26518800 DOI: 10.1007/bf03355349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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91
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Ruiz-Jasbon F, Ticehurst K, Norrby J, Ahonen J, Ivarsson ML, Klimovska T, Mukans M, Niciporuka R, Ivanovs I, Pupelis G, El-Bakary T, Bouchiba N, El-Faki A, El-Akkad M, Dabic D, Maric B, Perunicic V, Chung M, Amerio G, Pozzo G, Sorisio V, Peng L, Huang K, Huang YJ, Yang YC, Hu SX, Zhao G. Topic: Inguinal Hernia - Crossfire between the meshes. Hernia 2015; 19 Suppl 1:S251-3. [PMID: 26518817 DOI: 10.1007/bf03355365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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92
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Chung J, Cho D, Chung D, Chung M. Serum Cystatin C Levels are Positively Associated with Cardiovascular Autonomic Neuropathy in Patients with Type 2 Diabetes. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1555774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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93
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Abstract
Pericytes enveloping the endothelium play an important role in the physiology and pathology of microvessels, especially in vessel maturation and stabilization. However, our understanding of fundamental pericyte biology is limited by the lack of a robust in vitro model system that allows researchers to evaluate the interactions among multiple cell types in perfusable blood vessels. The present work describes a microfluidic platform that can be used to investigate interactions between pericytes and endothelial cells (ECs) during the sprouting, growth, and maturation steps of neovessel formation. A mixture of ECs and pericytes was attached to the side of a pre-patterned three dimensional fibrin matrix and allowed to sprout across the matrix. The effects of intact coverage and EC maturation by the pericytes on the perfused EC network were confirmed using a confocal microscope. Compared with EC monoculture conditions, EC-pericyte co-cultured vessels showed a significant reduction in diameter, increased numbers of junctions and branches and decreased permeability. In response to biochemical factors, ECs and pericytes in the platform showed the similar features with previous reports from in vivo experiments, thus reflect various pathophysiological conditions of in vivo microvessels. Taken together, these results support the physiological relevancy of our three-dimensional microfluidic culture system but also that the system can be used to screen drug effect on EC-pericyte biology.
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Jeong S, Kim D, Chung W, Yoon M, Shin D, Chung M. SU-E-T-801: Verification of Dose Information Passed Through 3D-Printed Products. Med Phys 2015. [DOI: 10.1118/1.4925165] [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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95
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Zhang C, Casas-Tintó S, Li G, Lin N, Chung M, Moreno E, Moberg KH, Zhou L. An intergenic regulatory region mediates Drosophila Myc-induced apoptosis and blocks tissue hyperplasia. Oncogene 2015; 34:2412. [PMID: 25924716 DOI: 10.1038/onc.2014.463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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96
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Campos J, Nayar S, Chung M, Hitchcock JR, Withers DR, Cunningham AF, Carlesso G, Herbst R, Buckley CD, Barone F. A2.20 ICOS-ICOSL interaction regulates lymphotoxin alpha expression and maturation of lymphoid-like stromal cells during inflammation. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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97
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Groening L, Maier M, Xiao C, Dahl L, Gerhard P, Kester OK, Mickat S, Vormann H, Vossberg M, Chung M. Experimental proof of adjustable single-knob ion beam emittance partitioning. PHYSICAL REVIEW LETTERS 2014; 113:264802. [PMID: 25615345 DOI: 10.1103/physrevlett.113.264802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Indexed: 06/04/2023]
Abstract
The performance of accelerators profits from phase-space tailoring by coupling of degrees of freedom. Previously applied techniques swap the emittances among the three degrees but the set of available emittances is fixed. In contrast to these emittance exchange scenarios, the emittance transfer scenario presented here allows for arbitrarily changing the set of emittances as long as the product of the emittances is preserved. This Letter is the first experimental demonstration of transverse emittance transfer along an ion beam line. The amount of transfer is chosen by setting just one single magnetic field value. The envelope functions (beta) and slopes (alpha) of the finally uncorrelated and repartitioned beam at the exit of the transfer line do not depend on the amount of transfer.
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Zelig R, Chung M, Touger-Decker R, Byham-Gray L. The Relationships between Missing Teeth and/or Dental Prostheses and Indicators of Nutritional Status in Older Adults: A Systematic Review. J Acad Nutr Diet 2014. [DOI: 10.1016/j.jand.2014.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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99
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Zhang C, Casas-Tintó S, Li G, Lin N, Chung M, Moreno E, Moberg KH, Zhou L. An intergenic regulatory region mediates Drosophila Myc-induced apoptosis and blocks tissue hyperplasia. Oncogene 2014; 34:2385-97. [PMID: 24931167 PMCID: PMC4268096 DOI: 10.1038/onc.2014.160] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 04/16/2014] [Accepted: 04/18/2014] [Indexed: 12/31/2022]
Abstract
Induction of cell-autonomous apoptosis following oncogene-induced overproliferation is a major tumor-suppressive mechanism in vertebrates. However, the detailed mechanism mediating this process remains enigmatic. In this study, we demonstrate that dMyc-induced cell-autonomous apoptosis in the fruit fly Drosophila melanogaster relies on an intergenic sequence termed the IRER (irradiation-responsive enhancer region). The IRER mediates the expression of surrounding proapoptotic genes, and we use an in vivo reporter of the IRER chromatin state to gather evidence that epigenetic control of DNA accessibility within the IRER is an important determinant of the strength of this response to excess dMyc. In a previous work, we showed that the IRER also mediates P53-dependent induction of proapoptotic genes following DNA damage, and the chromatin conformation within IRER is regulated by polycomb group-mediated histone modifications. dMyc-induced apoptosis and the P53-mediated DNA damage response thus overlap in a requirement for the IRER. The epigenetic mechanisms controlling IRER accessibility appear to set thresholds for the P53- and dMyc-induced expression of apoptotic genes in vivo and may have a profound impact on cellular sensitivity to oncogene-induced stress.
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Sym S, Kim Y, Park I, Ahn H, Hong J, Park J, Cho E, Lee J, Lee W, Chung M, Kim HS, Shin D. P208 A pilot study of low-dose capecitabine plus trastuzumab as first-line treatment for patients older than 75 years with HER2-positive advanced gastric cancer. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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