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Theodore hong

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https://www.readbyqxmd.com/read/28977350/e-e-ratio-and-outcome-prediction-in-hypertrophic-cardiomyopathy-the-influence-of-outflow-tract-obstruction
#1
Dai-Yin Lu, Bereketeab Hailesealassie, Ioannis Ventoulis, Hong-Yun Liu, Hsin-Yueh Liang, Iraklis Pozios, Marco Canepa, Susan Phillip, M Roselle Abraham, Theodore Abraham
Aims: Diastolic dysfunction is thought to be an important pathophysiologic component of hypertrophic cardiomyopathy (HCM). However, there are conflicting data on the potential value of the mitral E/e' ratio. We examined whether left ventricular outflow tract (LVOT) obstruction influences the value of E/e' in predicting outcomes in HCM. Methods and results: Patients who met diagnostic criteria for HCM were enrolled. Diastolic function was assessed with complete two-dimensional and Doppler echocardiography...
July 11, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28975835/role-and-future-directions-of-external-beam-radiotherapy-for-primary-liver-cancer
#2
Florence K Keane, Theodore S Hong
The incidence of primary liver cancers continues to increase in the United States and worldwide. The majority of patients with primary liver cancer are not candidates for curative therapies such as surgical resection or orthotopic liver transplantation due to tumor size, vascular invasion, or underlying comorbidities. Therefore, while primary liver cancer is the sixth-most common cancer diagnosis worldwide, it represents the second leading cause of cancer-related deaths. Radiotherapy traditionally played a limited role in the treatment of primary liver cancer due to concerns over hepatic tolerance and the inability to deliver a tumoricidal dose of radiotherapy while still sparing normal hepatic parenchyma...
July 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28974687/monomeric-ephrinb2-binding-induces-allosteric-changes-in-nipah-virus-g-that-precede-its-full-activation
#3
Joyce J W Wong, Tracy A Young, Jiayan Zhang, Shiheng Liu, George P Leser, Elizabeth A Komives, Robert A Lamb, Z Hong Zhou, Joshua Salafsky, Theodore S Jardetzky
Nipah virus is an emergent paramyxovirus that causes deadly encephalitis and respiratory infections in humans. Two glycoproteins coordinate the infection of host cells, an attachment protein (G), which binds to cell surface receptors, and a fusion (F) protein, which carries out the process of virus-cell membrane fusion. The G protein binds to ephrin B2/3 receptors, inducing G conformational changes that trigger F protein refolding. Using an optical approach based on second harmonic generation, we show that monomeric and dimeric receptors activate distinct conformational changes in G...
October 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28954285/phase-ii-study-of-proton-based-stereotactic-body-radiation-therapy-for-liver-metastases-importance-of-tumor-genotype
#4
Theodore S Hong, Jennifer Y Wo, Darrell R Borger, Beow Y Yeap, Erin I McDonnell, Henning Willers, Lawrence S Blaszkowsky, Eunice L Kwak, Jill N Allen, Jeffrey W Clark, Shyam Tanguturi, Lipika Goyal, Janet E Murphy, John A Wolfgang, Lorraine C Drapek, Ronald S Arellano, Harvey J Mamon, John T Mullen, Kenneth K Tanabe, Cristina R Ferrone, David P Ryan, A John Iafrate, Thomas F DeLaney, Andrew X Zhu
Background: We evaluated the efficacy and safety of risk-adapted, proton-based stereotactic body radiation therapy (SBRT) for liver metastases from solid tumors. Methods: This single-arm phase II single institutional study (NCT01239381) included patients with limited extrahepatic disease, 800 mL or greater of uninvolved liver, and no cirrhosis or Child-Pugh A, who had received proton-based SBRT to one to four liver metastases from solid tumors. Treatment comprised 30 to 50 Gray equivalent (GyE) in five fractions based on the effective volume of liver irradiated...
September 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28951089/sexual-quality-of-life-following-prostate-intensity-modulated-radiation-therapy-imrt-with-a-rectal-prostate-spacer-secondary-analysis-of-a-phase-iii-trial
#5
Daniel A Hamstra, Neil Mariados, John Sylvester, Dhiren Shah, Eric Gross, Richard Hudes, David Beyer, Steven Kurtzman, Jeffrey Bogart, R Alex Hsi, Michael Kos, Rodney Ellis, Mark Logsdon, Shawn Zimberg, Kevin Forsythe, Hong Zhang, Edward Soffen, Patrick Francke, Constantine Mantz, Peter Rossi, Theodore DeWeese, Stephanie Daignault-Newton, Benjamin W Fischer-Valuck, Anupama Chundury, Hiram A Gay, Walter Bosch, Jeff Michalski
BACKGROUND: We previously reported the results of a phase 3 trial evaluating a prostate/rectal hydrogel spacer during prostate intensity modulated radiation therapy, which resulted in decreased rectal dose and toxicity and less decline in bowel quality of life (QOL). A secondary analysis was performed to correlate penile bulb dose and sexual QOL. METHODS AND MATERIALS: Sexual QOL was measured with the Expanded Prostate Cancer Index Composite (EPIC) by mean scores, the proportion of patients with a minimal clinically important difference (MID), and analyses of the different items composing the sexual domain...
July 19, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28951010/spatiotemporal-fractionation-schemes-for-liver-stereotactic-body-radiotherapy
#6
Jan Unkelbach, Dávid Papp, Melissa R Gaddy, Nicolaus Andratschke, Theodore Hong, Matthias Guckenberger
BACKGROUND AND PURPOSE: Dose prescription in stereotactic body radiotherapy (SBRT) for liver tumors is often limited by the mean liver dose. We explore the concept of spatiotemporal fractionation as an approach to facilitate further dose escalation in liver SBRT. MATERIALS AND METHODS: Spatiotemporal fractionation schemes aim at partial hypofractionation in the tumor along with near-uniform fractionation in normal tissues. This is achieved by delivering distinct dose distributions in different fractions, which are designed such that each fraction delivers a high single fraction dose to complementary parts of the tumor while creating a similar dose bath in the surrounding noninvolved liver...
September 23, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28939750/inhibition-of-ebv-mediated-membrane-fusion-by-anti-ghgl-antibodies
#7
Karthik Sathiyamoorthy, Jiansen Jiang, Britta S Möhl, Jia Chen, Z Hong Zhou, Richard Longnecker, Theodore S Jardetzky
Herpesvirus entry into cells requires the coordinated action of multiple virus envelope glycoproteins, including gH, gL, and gB. For EBV, the gp42 protein assembles into complexes with gHgL heterodimers and binds HLA class II to activate gB-mediated membrane fusion with B cells. EBV tropism is dictated by gp42 levels in the virion, as it inhibits entry into epithelial cells while promoting entry into B cells. The gHgL and gB proteins are targets of neutralizing antibodies and potential candidates for subunit vaccine development, but our understanding of their neutralizing epitopes and the mechanisms of inhibition remain relatively unexplored...
September 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28935775/sarcopenia-is-associated-with-quality-of-life-and-depression-in-patients-with-advanced-cancer
#8
Ryan D Nipp, Georg Fuchs, Areej El-Jawahri, Julia Mario, Fabian M Troschel, Joseph A Greer, Emily R Gallagher, Vicki A Jackson, Avinash Kambadakone, Theodore S Hong, Jennifer S Temel, Florian J Fintelmann
BACKGROUND: Patients with advanced cancer often experience muscle wasting (sarcopenia), yet little is known about the characteristics associated with sarcopenia and the relationship between sarcopenia and patients' quality of life (QOL) and mood. MATERIALS AND METHODS: As part of a randomized trial, we assessed baseline QOL (Functional Assessment of Cancer Therapy-General [FACT-G]) and mood (Hospital Anxiety and Depression Scale [HADS]) in patients within 8 weeks of diagnosis of incurable lung or gastrointestinal cancer, and prior to randomization...
September 21, 2017: Oncologist
https://www.readbyqxmd.com/read/28931659/the-risk-of-mycobacterial-infections-associated-with-inhaled-corticosteroid-use
#9
Sarah K Brode, Michael A Campitelli, Jeffrey C Kwong, Hong Lu, Alex Marchand-Austin, Andrea S Gershon, Frances B Jamieson, Theodore K Marras
Inhaled corticosteroid (ICS) use is associated with an increased risk of pneumonia. This study was performed to determine if ICS use is associated with an increased risk of nontuberculous mycobacterial pulmonary disease (NTM-PD) or tuberculosis (TB).We conducted a population-based nested case-control study using linked laboratory and health administrative databases in Ontario, Canada, including adults aged ≥66 years with treated obstructive lung disease (i.e. asthma, chronic obstructive pulmonary disease (COPD) or asthma-COPD overlap syndrome) between 2001 and 2013...
September 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28864067/a-novel-chemoradiation-targeting-stem-and-nonstem-pancreatic-cancer-cells-by-repurposing-disulfiram
#10
Juan Cong, Yangyang Wang, Xiao Zhang, Nan Zhang, Ling Liu, Klara Soukup, Theodoros Michelakos, Theodore Hong, Albert DeLeo, Lei Cai, Francesco Sabbatino, Soldano Ferrone, Hang Lee, Vera Levina, Bryan Fuchs, Kenneth Tanabe, Keith Lillemoe, Cristina Ferrone, Xinhui Wang
Pancreatic ductal adenocarcinoma (PDAC) has a 5-year relative survival rate of 8% and is projected to be the second leading cause of cancer death by 2030, underscoring the urgency to develop new strategies to improve current therapeutic modalities for PDAC. Targeting pancreatic cancer stem cells (PCSCs), which are resistant to radiation and chemotherapy, is a promising strategy. A novel approach which can be readily clinically translated is to repurpose disulfiram (DSF), a drug for treating alcoholism, to target PCSCs...
August 30, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28854172/discovery-of-stimulation-responsive-immune-enhancers-with-crispr-activation
#11
Dimitre R Simeonov, Benjamin G Gowen, Mandy Boontanrart, Theodore L Roth, John D Gagnon, Maxwell R Mumbach, Ansuman T Satpathy, Youjin Lee, Nicolas L Bray, Alice Y Chan, Dmytro S Lituiev, Michelle L Nguyen, Rachel E Gate, Meena Subramaniam, Zhongmei Li, Jonathan M Woo, Therese Mitros, Graham J Ray, Gemma L Curie, Nicki Naddaf, Julia S Chu, Hong Ma, Eric Boyer, Frederic Van Gool, Hailiang Huang, Ruize Liu, Victoria R Tobin, Kathrin Schumann, Mark J Daly, Kyle K Farh, K Mark Ansel, Chun J Ye, William J Greenleaf, Mark S Anderson, Jeffrey A Bluestone, Howard Y Chang, Jacob E Corn, Alexander Marson
The majority of genetic variants associated with common human diseases map to enhancers, non-coding elements that shape cell-type-specific transcriptional programs and responses to extracellular cues. Systematic mapping of functional enhancers and their biological contexts is required to understand the mechanisms by which variation in non-coding genetic sequences contributes to disease. Functional enhancers can be mapped by genomic sequence disruption, but this approach is limited to the subset of enhancers that are necessary in the particular cellular context being studied...
September 7, 2017: Nature
https://www.readbyqxmd.com/read/28747034/impact-of-peak-provoked-left-ventricular-outflow-tract-gradients-on-clinical-outcomes-in-hypertrophic-cardiomyopathy
#12
Dai-Yin Lu, Bereketeab Hailesealassie, Ioannis Ventoulis, Hongyun Liu, Hsin-Yueh Liang, Alexandra Nowbar, Iraklis Pozios, Marco Canepa, Kenneth Cresswell, Hong-Chang Luo, M Roselle Abraham, Theodore P Abraham
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is traditionally classified based on a left ventricular outflow tract (LVOT) pressure gradient of 30mmHg at rest or with provocation. There are no data on whether 30mmHg is the most informative cut-off value and whether provoked gradients offer any information regarding outcomes. METHODS: Resting and provoked peak LVOT pressure gradients were measured by Doppler echocardiography in patients fulfilling guidelines criteria for HCM...
September 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28740921/long-term-outcomes-and-toxicities-of-a-large-cohort-of-anal-cancer-patients-treated-with-dose-painted-imrt-per-rtog-0529
#13
Devarati Mitra, Theodore S Hong, Nora Horick, Brent Rose, Lorraine N Drapek, Lawrence S Blaszkowsky, Jill N Allen, Eunice L Kwak, Janet E Murphy, Jeffrey W Clark, David P Ryan, James C Cusack, Liliana G Bordeianou, David L Berger, Jennifer Y Wo
PURPOSE: To describe the outcomes and toxicities of the largest cohort to date of patients with anal squamous cell carcinoma uniformly treated with concurrent chemoradiation using dose-painted intensity modulated radiation therapy (DP-IMRT) according to RTOG 0529. METHODS AND MATERIALS: We identified 99 eligible patients with anal cancer who were treated at our institution with definitive chemoradiation using DP-IMRT between 2005 and 2015 per RTOG 0529 dosing guidelines...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28697144/assessment-of-the-utility-of-laparoscopy-and-peritoneal-cytology-in-the-staging-of-pancreatic-cancer
#14
Stephen A Mihalcik, Sophia Virani, Theodore S Hong, Andrzej Niemierko, Mari Mino-Kenudson, Wendy K Kobayashi, Carlos Fernández-Del Castillo, Harvey J Mamon
No abstract text is available yet for this article.
August 2017: Pancreas
https://www.readbyqxmd.com/read/28613934/standard-fractionation-external-beam-radiotherapy-with-and-without-intraoperative-radiotherapy-for-locally-recurrent-rectal-cancer-the-role-of-local-therapy-in-patients-with-a-high-competing-risk-of-death-from-distant-disease
#15
Amar U Kishan, Justin C Voog, Jonathan Wiseman, Ryan R Cook, Marek Ancukiewicz, Percy Lee, David P Ryan, Jeffrey W Clark, David L Berger, James C Cusack, Jennifer Y Wo, Theodore S Hong
OBJECTIVE: We sought to evaluate the effectiveness and safety of utilizing radiotherapy (RT) with standard fractionation, with or without intraoperative RT (IORT), to treat locally recurrent rectal cancer (LRRC). METHODS: Retrospective review of 25 patients with LRRC treated with standard fractionation RT from 2005 to 2011. 15 patients (60%) had prior pelvic RT and 10 (40%) had synchronous metastases. The median equivalent dose in 2-Gy fractions was 30 and 49.6 Gy in patients with and without prior RT, respectively...
August 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28600474/use-of-angiotensin-system-inhibitors-is-associated-with-immune-activation-and-longer-survival-in-nonmetastatic-pancreatic-ductal-adenocarcinoma
#16
Hao Liu, Kamila Naxerova, Matthias Pinter, Joao Incio, Hang Lee, Kohei Shigeta, William W Ho, Jonathan A Crain, Alex Jacobson, Theodoros Michelakos, Daniella Dias-Santos, Andrea Zanconato, Theodore S Hong, Jeffrey W Clark, Janet E Murphy, David P Ryan, Vikram Deshpande, Keith D Lillemoe, Carlos Fernandez-Del Castillo, Michael Downes, Ronald M Evans, James Michaelson, Cristina R Ferrone, Yves Boucher, Rakesh K Jain
Purpose: Angiotensin system inhibitors (ASI) can improve prognosis in multiple cancer types, including pancreatic ductal adenocarcinoma (PDAC). However, no study has examined the effect of ASIs alone or combined with adjuvant chemotherapy in resected PDAC patients.Experimental Design: We performed an analysis of the records of ASI users and nonuser patients with PDAC seen at Massachusetts General Hospital (Boston, MA) between January 2006 and December 2010. To identify mechanisms of ASIs in PDAC, we performed RNA sequencing (RNA-Seq) of resected primary lesions...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28462895/irradiation-of-anatomically-defined-pelvic-subsites-and-acute-hematologic-toxicity-in-anal-cancer-patients-undergoing-chemoradiation
#17
Brent Rose, Devarati Mitra, Theodore S Hong, Kyung-Wook Jee, Andrzej Niemierko, Lorraine N Drapek, Lawrence S Blaszkowsky, Jill N Allen, Janet E Murphy, Jeffrey W Clark, David P Ryan, Jennifer Y Wo
PURPOSE: Chemoradiation for the treatment of anal cancer is known to cause significant hematologic toxicity (HT). We sought to investigate if radiation dose to specific pelvic subsites is associated with increased HT risk. METHODS AND MATERIALS: Forty-five patients with nonmetastatic anal cancer who received definitive chemoradiation with intensity modulated radiation therapy and concurrent mitomycin-C and 5-fluorouracil were studied. Total pelvic bone marrow (TBM) was divided into 3 subsites: lumbosacral bone marrow (LSBM), including the entire sacrum and L5 vertebral body; iliac bone marrow (IBM) extending from the iliac crests to the superior border of the femoral head; and lower pelvic bone marrow, including the pubic bones, ischia, acetabula, and proximal femurs...
September 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28440794/se-sad-serial-femtosecond-crystallography-datasets-from-selenobiotinyl-streptavidin
#18
Chun Hong Yoon, Hasan DeMirci, Raymond G Sierra, E Han Dao, Radman Ahmadi, Fulya Aksit, Andrew L Aquila, Alexander Batyuk, Halilibrahim Ciftci, Serge Guillet, Matt J Hayes, Brandon Hayes, Thomas J Lane, Meng Liang, Ulf Lundström, Jason E Koglin, Paul Mgbam, Yashas Rao, Theodore Rendahl, Evan Rodriguez, Lindsey Zhang, Soichi Wakatsuki, Sébastien Boutet, James M Holton, Mark S Hunter
We provide a detailed description of selenobiotinyl-streptavidin (Se-B SA) co-crystal datasets recorded using the Coherent X-ray Imaging (CXI) instrument at the Linac Coherent Light Source (LCLS) for selenium single-wavelength anomalous diffraction (Se-SAD) structure determination. Se-B SA was chosen as the model system for its high affinity between biotin and streptavidin where the sulfur atom in the biotin molecule (C10H16N2O3S) is substituted with selenium. The dataset was collected at three different transmissions (100, 50, and 10%) using a serial sample chamber setup which allows for two sample chambers, a front chamber and a back chamber, to operate simultaneously...
April 25, 2017: Scientific Data
https://www.readbyqxmd.com/read/28434648/nivolumab-in-patients-with-advanced-hepatocellular-carcinoma-checkmate-040-an-open-label-non-comparative-phase-1-2-dose-escalation-and-expansion-trial
#19
Anthony B El-Khoueiry, Bruno Sangro, Thomas Yau, Todd S Crocenzi, Masatoshi Kudo, Chiun Hsu, Tae-You Kim, Su-Pin Choo, Jörg Trojan, Theodore H Welling, Tim Meyer, Yoon-Koo Kang, Winnie Yeo, Akhil Chopra, Jeffrey Anderson, Christine Dela Cruz, Lixin Lang, Jaclyn Neely, Hao Tang, Homa B Dastani, Ignacio Melero
BACKGROUND: For patients with advanced hepatocellular carcinoma, sorafenib is the only approved drug worldwide, and outcomes remain poor. We aimed to assess the safety and efficacy of nivolumab, a programmed cell death protein-1 (PD-1) immune checkpoint inhibitor, in patients with advanced hepatocellular carcinoma with or without chronic viral hepatitis. METHODS: We did a phase 1/2, open-label, non-comparative, dose escalation and expansion trial (CheckMate 040) of nivolumab in adults (≥18 years) with histologically confirmed advanced hepatocellular carcinoma with or without hepatitis C or B (HCV or HBV) infection...
June 24, 2017: Lancet
https://www.readbyqxmd.com/read/28398845/potentially-curable-pancreatic-cancer-american-society-of-clinical-oncology-clinical-practice-guideline-update
#20
Alok A Khorana, Pamela B Mangu, Jordan Berlin, Anitra Engebretson, Theodore S Hong, Anirban Maitra, Supriya G Mohile, Matthew Mumber, Richard Schulick, Marc Shapiro, Susan Urba, Herbert J Zeh, Matthew H G Katz
Purpose To update the Potentially Curable Pancreatic Cancer: American Society of Clinical Oncology Clinical Practice Guideline published on May 31, 2016. The October 2016 update focuses solely on new evidence that pertains to clinical question 4 of the guideline: What is the appropriate adjuvant regimen for patients with pancreatic cancer who have undergone an R0 or R1 resection of their primary tumor? Methods The recently published results of a randomized phase III study prompted an update of this guideline...
July 10, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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