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Ramos-Mendez J, Perl J, Schuemann J, Shin J, Paganetti H, Faddegon B. SU-E-T-466: Implementation of An Extension Module for Dose Response Models in the TOPAS Monte Carlo Toolkit. Med Phys 2015. [DOI: 10.1118/1.4924828] [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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Pirlepesov F, Shin J, Moskvin VP, Gray J, Li Z, Hua C, Gajjar A, Krasin MJ, Merchant TE, Farr JB. SU-F-BRD-14: Dose Weighted Linear Energy Transfer Analysis of Critical Structures in Proton Therapy of Pediatric Brain Tumor Patients. Med Phys 2015. [DOI: 10.1118/1.4925193] [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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203
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Axente M, Moskvin V, Shin J, Tsiamas P, Merchant T, Farr J. SU-E-T-704: Skin Dose in Proton Pencil Beam Scanning for Pediatric Patients. Med Phys 2015. [DOI: 10.1118/1.4925068] [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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Orpet R, Riesenberg R, Shin J, Subido C, Markul E, Rea T. Increasing bystander CPR: potential of a one question telecommunicator identification algorithm. Scand J Trauma Resusc Emerg Med 2015; 23:39. [PMID: 25963635 PMCID: PMC4427995 DOI: 10.1186/s13049-015-0115-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 04/09/2015] [Indexed: 10/30/2022] Open
Abstract
OBJECTIVES Telecommunicators use a two-question algorithm to identify cardiac arrest: Is the individual conscious? Is the individual breathing normally? Although this approach increases arrest identification and consequently bystander CPR, the strategy does not identify all arrests and requires time to complete. We evaluated the implications of a one-question strategy that inquired only about consciousness. METHODS We undertook a 3-month observational study of consecutive cases identified as unconscious by the telecommunicator prior to EMS arrival who were not receiving bystander CPR. We evaluated the extent that a one-question strategy could increase arrest identification and reduce the identification interval; and the trade-off whereby additional persons without arrest could potentially receive CPR. RESULTS Among 679 eligible cases, 20% (n = 135) were in arrest and 80% (n = 544) were not in arrest. The two-question algorithm identified 90% (121/135) as true arrest. Of the 135 in arrest, 70% (n = 95) received compressions. The median interval from call to arrest identification was 72 seconds, with a median of 14 seconds for the breathing normally question. Using the two-question algorithm, telecommunicators incorrectly classified 30% (n = 164/544) of non-arrests as arrest. Bystanders proceeded to compressions in 16% (n = 85/544) of persons not in arrest. A one-question approach that inquired only about consciousness could potentially increase the arrest identification by 10% (14/135) and reduce the interval to compressions by a median of 14 seconds; however the strategy would potentially triple the number of non-arrest cases (544 versus 164) eligible for CPR instructions. CONCLUSION A single-question arrest identification algorithm may not achieve a favorable balance of risk and benefit.
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Saeed O, Shah A, Guerrero C, Nguyen J, Patel S, Sims D, Shin J, D’Alessandro D, Goldstein D, Jorde U. High Dose Antiplatelet Therapy Increases Early Bleeding Risk But Does Not Reduce Thrombotic Events in Patients With CF-LVADs. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.576] [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] Open
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Free R, Shin J, Miller B, Doyle T, Moritz A, Conroy J, Brust T, Southall N, Ferrer M, Donthamsetti P, Javitch J, Watts V, Katz J, Stanwood G, Bertz J, Woods J, Emmitte K, Lindsley C, Alvarez V, Sibley D. Identification of a novel dopaminergic agonist that displays locational bias and functional selectively at the D
2
dopamine receptor. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.772.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee MD, Loh CT, Shin J, Chhabra S, Dennis ML, Otting G, Swarbrick JD, Graham B. Compact, hydrophilic, lanthanide-binding tags for paramagnetic NMR spectroscopy. Chem Sci 2015; 6:2614-2624. [PMID: 29560247 PMCID: PMC5812434 DOI: 10.1039/c4sc03892d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 02/25/2015] [Indexed: 01/18/2023] Open
Abstract
The design, synthesis and evaluation of four novel lanthanide-binding tags for paramagnetic NMR spectroscopy are reported.
The design, synthesis and evaluation of four novel lanthanide-binding tags for paramagnetic NMR spectroscopy are reported. Each tag is based on the ((2S,2′S,2′′S,2′′′S)-1,1′,1′′,1′′′-(1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayl)tetrakis(propan-2-ol)) scaffold, featuring small chiral alcohol coordinating pendants to minimise the size and hydrophobic character of each tag. The tags feature different linkers of variable length for conjugation to protein via a single cysteine residue. Each tag's ability to induce pseudocontact shifts (PCS) was assessed on a ubiquitin A28C mutant. Two enantiomeric tags of particular note, C7 and C8, produced significantly larger Δχ-tensors compared to a previously developed tag, C1, attributed to the extremely short linker utilised, limiting the mobility of the bound lanthanide ion. The C7 and C8 tags' capacity to induce PCSs was further demonstrated on GB1 Q32C and 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) S112C/C80A mutants. Whilst factors such as the choice of lanthanide ion, pH and site of conjugation influence the size of the PCSs obtained, the tags represent a significant advance in the field.
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Shin J, Park JY, Kim SJ, Kang HY. Characteristics of keratinocytes in facial solar lentigo with flattened rete ridges: comparison with melasma. Clin Exp Dermatol 2015; 40:489-94. [DOI: 10.1111/ced.12621] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2014] [Indexed: 11/29/2022]
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Sung KC, Cho EJ, Lim YH, Shin J, Pyun WB, Kang SM, Rosenson RS. HDL-C levels modify the association between C-reactive protein and coronary artery calcium score. Nutr Metab Cardiovasc Dis 2014; 24:1240-1245. [PMID: 25096924 DOI: 10.1016/j.numecd.2014.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 04/22/2014] [Accepted: 06/08/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUNDS AND AIMS C-reactive protein (CRP) levels predict incident and recurrent cardiovascular disease (CVD) events; however, associations between CRP and pre-clinical atherosclerosis is less certain. Since high concentrations of high-density lipoprotein cholesterol (HDL-C) are inversely associated with CVD risk, we investigated whether HDL-C modified the association between CRP concentration and measures of preclinical atherosclerosis. METHODS AND RESULTS Data were analyzed from a Korean occupational cohort of 12,030 male subjects who underwent a cardiac computed tomography (CT) estimation of coronary artery calcification (CAC) score and an assessment of CVD risk factors. Logistic regression was used to describe associations between CRP and measures of pre-clinical atherosclerosis, such as CAC scores >0. As many as 1351 (11.2%) participants had a CAC score>0. CRP was stratified into 3 groups based on clinical category: <1 mg/L, 1 to <2 mg/L, and ≥ 2 mg/dL. In the bottom CRP group, 907/8697 (10.4%) of subjects had a CAC score >0, compared with 242/1943 (12.5%) in the middle group and 202/1396 (14.5%) in the top CRP group (p < 0.0001). After adjustment for multiple CVD risk factors, there was a positive association between CRP and CAC score>0 (OR between top and bottom CRP groups, 1.41 [1.04, 1.90], p = 0.027) in the lowest HDL-C quartile but not in the highest HDL-C (OR between top and bottom CRP group, 0.80 [0.46, 1.39], p = 0.425). CONCLUSION The association between CRP concentration and CAC score differed according to HDL-C levels.
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Pu A, Ding L, Shin J, Abel J. INDEPENDENT FACTORS ASSOCIATED WITH 5-YEAR REPEAT REVASCULARIZATION AFTER CORONARY ARTERY BYPASS SURGERY IN BC, 2000-2011. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.240] [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] Open
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Ng C, Shin J, Ding L. TRENDS AND VARIATION IN TRANSFUSION RATES FOLLOWING CARDIAC SURGERY IN BRITISH COLUMBIA, 2009 TO 2013. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.209] [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] Open
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Shin J, Truong M. Racial Disparities in Laryngeal Cancer Treatment and Outcome in the United States: A Population-Based SEER Analysis of 24,069 Patients. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kovalchuk N, Shin J, Russo G, Kachnic L. Optimizing Efficiency and Safety in Radiation Oncology Department Through the Use of Aria 11 Visual Care Path (VCP). Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Testa M, Schümann J, Lu HM, Shin J, Faddegon B, Perl J, Paganetti H. Experimental validation of the TOPAS Monte Carlo system for passive scattering proton therapy. Med Phys 2014; 40:121719. [PMID: 24320505 DOI: 10.1118/1.4828781] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE TOPAS (TOol for PArticle Simulation) is a particle simulation code recently developed with the specific aim of making Monte Carlo simulations user-friendly for research and clinical physicists in the particle therapy community. The authors present a thorough and extensive experimental validation of Monte Carlo simulations performed with TOPAS in a variety of setups relevant for proton therapy applications. The set of validation measurements performed in this work represents an overall end-to-end testing strategy recommended for all clinical centers planning to rely on TOPAS for quality assurance or patient dose calculation and, more generally, for all the institutions using passive-scattering proton therapy systems. METHODS The authors systematically compared TOPAS simulations with measurements that are performed routinely within the quality assurance (QA) program in our institution as well as experiments specifically designed for this validation study. First, the authors compared TOPAS simulations with measurements of depth-dose curves for spread-out Bragg peak (SOBP) fields. Second, absolute dosimetry simulations were benchmarked against measured machine output factors (OFs). Third, the authors simulated and measured 2D dose profiles and analyzed the differences in terms of field flatness and symmetry and usable field size. Fourth, the authors designed a simple experiment using a half-beam shifter to assess the effects of multiple Coulomb scattering, beam divergence, and inverse square attenuation on lateral and longitudinal dose profiles measured and simulated in a water phantom. Fifth, TOPAS' capabilities to simulate time dependent beam delivery was benchmarked against dose rate functions (i.e., dose per unit time vs time) measured at different depths inside an SOBP field. Sixth, simulations of the charge deposited by protons fully stopping in two different types of multilayer Faraday cups (MLFCs) were compared with measurements to benchmark the nuclear interaction models used in the simulations. RESULTS SOBPs' range and modulation width were reproduced, on average, with an accuracy of +1, -2 and ±3 mm, respectively. OF simulations reproduced measured data within ±3%. Simulated 2D dose-profiles show field flatness and average field radius within ±3% of measured profiles. The field symmetry resulted, on average in ±3% agreement with commissioned profiles. TOPAS accuracy in reproducing measured dose profiles downstream the half beam shifter is better than 2%. Dose rate function simulation reproduced the measurements within ∼2% showing that the four-dimensional modeling of the passively modulation system was implement correctly and millimeter accuracy can be achieved in reproducing measured data. For MLFCs simulations, 2% agreement was found between TOPAS and both sets of experimental measurements. The overall results show that TOPAS simulations are within the clinical accepted tolerances for all QA measurements performed at our institution. CONCLUSIONS Our Monte Carlo simulations reproduced accurately the experimental data acquired through all the measurements performed in this study. Thus, TOPAS can reliably be applied to quality assurance for proton therapy and also as an input for commissioning of commercial treatment planning systems. This work also provides the basis for routine clinical dose calculations in patients for all passive scattering proton therapy centers using TOPAS.
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Kim MK, Shin J, Kweon SS, Shin DH, Lee YH, Chun BY, Choi BY. Harmful and beneficial relationships between alcohol consumption and subclinical atherosclerosis. Nutr Metab Cardiovasc Dis 2014; 24:767-776. [PMID: 24694837 DOI: 10.1016/j.numecd.2014.02.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 01/20/2014] [Accepted: 02/03/2014] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIMS Arterial stiffness and increased intima-media wall thickness are two of the main predictors of cardiovascular disease (CVD). We evaluated whether brachial-ankle pulse wave velocity (baPWV) and common carotid artery intima-media wall thickness (CCA-IMT) are correlated with alcohol consumption in a cross-sectional study among Korean men and women aged 40 years and over. METHODS AND RESULTS All 5539 subjects (2121 men and 3418 women) were participants in the Multi-Rural Communities cohort (MRcohort) study, a part of the Korean Genome Epidemiology Study (KoGES). The baPWV was positively correlated with alcohol consumption in men (p for trend <0.0001). Age (middle-aged versus elderly) modified the effect of alcohol consumption on PWV. On the other hand CCA-IMT decreased with alcohol consumption in men. There was no favorable zone of alcohol consumption in terms of baPWV and CCA-IMT. Adjustment for lipid profiles substantially attenuated the relationship between alcohol consumption and CCA-IMT. There was no clear relation between alcohol consumption and baPWV/CCA-IMT in women. CONCLUSIONS Along with a linear harmful relationship between alcohol consumption and arterial stiffness in men there may also be a beneficial relationship between alcohol consumption and carotid intima-wall thickness. The effect of alcohol on arterial stiffness may be slightly stronger in elderly men, and the effect of alcohol on CCA-IMT may be mediated by lipid factors.
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Kim S, Kim B, Shin J, Hong Y, Jeun S, Kim S, Cho J, Park Y. Risk Factors Predicting Nasoseptal Flap Failure in Endoscopic Endonasal Transsphenoidal Approach. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Shin J, Park S, Jeong J, Jeong C, Lim Y, SHIN D, Incerti S, Lee S. SU-E-T-241: Monte Carlo Simulation Study About the Prediction of Proton-Induced DNA Strand Breakage On the Double Helix Structure. Med Phys 2014. [DOI: 10.1118/1.4888572] [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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Shin J, Faddegon B, Coss D, McMurry J, Farr J. SU-E-T-531: Performance Evaluation of Multithreaded Geant4 for Proton Therapy Dose Calculations in a High Performance Computing Facility. Med Phys 2014. [DOI: 10.1118/1.4888865] [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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Chung K, Kim J, Shin J, Han Y, Ju S, Hong C, Kim D, Kim H, Shin E, Ahn S, Chung S, Choi D. SU-E-T-239: Monte Carlo Modelling of SMC Proton Nozzles Using TOPAS. Med Phys 2014. [DOI: 10.1118/1.4888570] [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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Ju S, Hong C, Kim M, Chung K, Kim J, Han Y, Ahn S, Chung S, Shin E, Shin J, Kim H, Kim D, Choi D. SU-E-T-195: Gantry Angle Dependency of MLC Leaf Position Error. Med Phys 2014. [DOI: 10.1118/1.4888525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Saeed O, Jermyn R, Mannem S, Nucci C, Casazza D, Farooqui S, Bloom M, McLarty A, Zolty R, Shin J, D’Alessandro D, Goldstein D, Patel S. Intracranial Hemorrhage Is Associated with a Higher Doppler Blood Pressure during Continuous Flow Left Ventricular Assist Device Support. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Snyder M, Peterson E, Singer J, Shah R, Golden J, Shin J, Wickersham N, Kawut S, Desai A, Katz P, Hays S, Kukreja J, Sonett J, Arcasoy S, D’Ovidio F, Ware L, Christie J, Lederer D. Evolution of the Association Between Obesity and Survival after Adult Lung Transplantation in the Lung Allocation Score Era. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Saeed O, Jermyn R, Patel S, Shin J, D’Alessandro D, Goldstein D, Zolty R. Angiotensin-Converting Enzyme Inhibitors (ACEIs) or Angiotensin- Receptor Blockers (ARBs) during CF-LVAD Support Are Associated with Sustained Improvement in Renal Function. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Teuteberg J, Slaughter M, Rogers J, McGee E, Pagani F, Gordon R, Rame J, Acker M, Kormos R, Salerno C, Schleeter T, Goldstein D, Shin J, Starling R, Wozniak T, Malik A, Silvestry S, Ewald G, Birks E, Najarian K, Hathaway D, Aaronson K. Impact of Device Design and Patient Management on the Incidence of Neurologic Events after HVAD Left Ventricular Assist Device. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Saeed O, Jermyn R, Gunda S, Patel S, Shin J, D’Alessandro D, Goldstein D, Zolty R. Mineralocorticoid Receptor Antagonists Enhance Cardiac Function during Continuous Flow Left Ventricular Assist Device Support. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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