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Robert Siegel

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https://www.readbyqxmd.com/read/27923045/tumor-evolution-in-two-patients-with-basal-like-breast-cancer-a-retrospective-genomics-study-of-multiple-metastases
#1
Katherine A Hoadley, Marni B Siegel, Krishna L Kanchi, Christopher A Miller, Li Ding, Wei Zhao, Xiaping He, Joel S Parker, Michael C Wendl, Robert S Fulton, Ryan T Demeter, Richard K Wilson, Lisa A Carey, Charles M Perou, Elaine R Mardis
BACKGROUND: Metastasis is the main cause of cancer patient deaths and remains a poorly characterized process. It is still unclear when in tumor progression the ability to metastasize arises and whether this ability is inherent to the primary tumor or is acquired well after primary tumor formation. Next-generation sequencing and analytical methods to define clonal heterogeneity provide a means for identifying genetic events and the temporal relationships between these events in the primary and metastatic tumors within an individual...
December 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27897036/computed-tomography-and-magnetic-resonance-findings-of-fat-poor-angiomyolipomas
#2
Aaron Potretzke, Theodora A Potretzke, Tyler Marques Bauman, B Alexander Knight, Alyssa Park, Jonathan M Mobley, Robert S Figenshau, Cary Siegel
INTRODUCTION: Approximately 5% of angiomyolipomas (AMLs) are classified as "fat poor" due to lack of visually detectable fat on imaging, making them difficult to distinguish from renal cell carcinoma. Recent investigations have proposed computed tomography (CT) and magnetic resonance (MR) imaging features suggestive of fat-poor AML (fp-AML). Herein, we determined the frequency of these features in a cohort of fp-AMLs by retrospective review of preoperative imaging. METHODS: A pathology database query from January 2005 to August 2013 identified 49 renal specimens of AML with available imaging...
November 29, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27879517/dux4-immunohistochemistry-is-a-highly-sensitive-and-specific-marker-for-cic-dux4-fusion-positive-round-cell-tumor
#3
Bradford Siegele, Jon Roberts, Jennifer O Black, Erin Rudzinski, Sara O Vargas, Csaba Galambos
The histologic differential diagnosis of pediatric and adult round cell tumors is vast and includes the recently recognized entity CIC-DUX4 fusion-positive round cell tumor. The diagnosis of CIC-DUX4 tumor can be suggested by light microscopic and immunohistochemical features, but currently, definitive diagnosis requires ancillary genetic testing such as conventional karyotyping, fluorescence in situ hybridization, or molecular methods. We sought to determine whether DUX4 expression would serve as a fusion-specific immunohistochemical marker distinguishing CIC-DUX4 tumor from potential histologic mimics...
November 22, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27872358/severe-obesity-decreasing-in-children-in-cincinnati-ohio
#4
Roohi Y Kharofa, Jillian A Klein, Philip Khoury, Robert M Siegel
Childhood obesity rates appear to be leveling off. Studies not looking at severe obesity may be masking a rightward shift in the distribution of body mass indexes. Our objective was to provide current prevalence rates and examine trends in overweight, obesity, class 2 obesity, and class 3 obesity for youth in Cincinnati, Ohio. We performed a retrospective chart review of children 2 to 18 years old seen at Cincinnati Children's Hospital Medical Center between July 1, 2011, and June 30, 2014. Data from 217 037 BMIs were obtained; 35...
November 20, 2016: Clinical Pediatrics
https://www.readbyqxmd.com/read/27850805/1168-onsite-attendance-of-nighttime-intensivist-improves-mortality-in-veterans-medical-icu
#5
Waqas Azhar, Dushyant Damania, Gautam Sikka, Sherif Latef, Moses Bachan, Robert Siegel, Zinobia Khan
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27780886/development-of-an-index-to-define-overall-disease-severity-in-ibd
#6
Corey A Siegel, Cynthia B Whitman, Brennan M R Spiegel, Brian Feagan, Bruce Sands, Edward V Loftus, Remo Panaccione, Geert D'Haens, Charles N Bernstein, Richard Gearry, Siew C Ng, Gerassimos J Mantzaris, Balfour Sartor, Mark S Silverberg, Robert Riddell, Ioannis E Koutroubakis, Colm O'Morain, Peter L Lakatos, Dermot P B McGovern, Jonas Halfvarson, Walter Reinisch, Gerhard Rogler, Wolfgang Kruis, Curt Tysk, Stefan Schreiber, Silvio Danese, William Sandborn, Anne Griffiths, Bjorn Moum, Christoph Gasche, Francesco Pallone, Simon Travis, Julian Panes, Jean-Frederic Colombel, Stephen Hanauer, Laurent Peyrin-Biroulet
BACKGROUND AND AIM: Disease activity for Crohn's disease (CD) and UC is typically defined based on symptoms at a moment in time, and ignores the long-term burden of disease. The aims of this study were to select the attributes determining overall disease severity, to rank the importance of and to score these individual attributes for both CD and UC. METHODS: Using a modified Delphi panel, 14 members of the International Organization for the Study of Inflammatory Bowel Diseases (IOIBD) selected the most important attributes related to IBD...
October 25, 2016: Gut
https://www.readbyqxmd.com/read/27753604/mitral-annular-calcification-is-not-associated-with-decreased-procedural-success-durability-of-repair-or-left-ventricular-remodelling-in-percutaneous-edge-to-edge-repair-of-mitral-regurgitation
#7
Richard Cheng, Emily Tat, Robert J Siegel, Reza Arsanjani, Asma Hussaini, Moody Makar, Yukiko Mizutani, Alfredo Trento, Saibal Kar
AIMS: Mitral annular calcification (MAC) negatively influences outcomes in surgical mitral valve (MV) repair for mitral regurgitation (MR). However, there are no data on whether MAC impacts on outcomes of MitraClip percutaneous MV edge-to-edge repair. This study sought to investigate whether the presence of MAC impacts on the procedural success and durability of percutaneous transcatheter repair of MR using the MitraClip. METHODS AND RESULTS: One hundred and seventy-three patients undergoing MitraClip repair for significant MR were studied...
October 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27708152/pyrodiversity-promotes-avian-diversity-over-the-decade-following-forest-fire
#8
Morgan W Tingley, Viviana Ruiz-Gutiérrez, Robert L Wilkerson, Christine A Howell, Rodney B Siegel
An emerging hypothesis in fire ecology is that pyrodiversity increases species diversity. We test whether pyrodiversity-defined as the standard deviation of fire severity-increases avian biodiversity at two spatial scales, and whether and how this relationship may change in the decade following fire. We use a dynamic Bayesian community model applied to a multi-year dataset of bird surveys at 1106 points sampled across 97 fires in montane California. Our results provide strong support for a positive relationship between pyrodiversity and bird diversity...
October 12, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/27699901/model-of-the-delayed-translation-of-cyclin-b-maternal-mrna-after-sea-urchin-fertilization
#9
Vincent Picard, Odile Mulner-Lorillon, Jérémie Bourdon, Julia Morales, Patrick Cormier, Anne Siegel, Robert Bellé
Sea urchin eggs exhibit a cap-dependent increase in protein synthesis within minutes after fertilization. This rise in protein synthesis occurs at a constant rate for a great number of proteins translated from the different available mRNAs. Surprisingly, we found that cyclin B, a major cell-cycle regulator, follows a synthesis pattern that is distinct from the global protein population, so we developed a mathematical model to analyze this dissimilarity in biosynthesis kinetic patterns. The model includes two pathways for cyclin B mRNA entry into the translational machinery: one from immediately available mRNA (mRNAcyclinB) and one from mRNA activated solely after fertilization (XXmRNAcyclinB)...
October 4, 2016: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/27667378/the-role-of-medical-therapy-in-moderate-to-severe-degenerative-mitral-regurgitation
#10
Leandro Slipczuk, Asim M Rafique, Carlos D Davila, Roy Beigel, Gregg S Pressman, Robert J Siegel
Mitral regurgitation (MR) is a common valvular disorder that has important health and economic consequences. Standardized guidelines exist regarding when and in whom to perform mitral valve surgery, but little information is available regarding medical treatment of MR. Many patients with moderate or severe MR do not meet criteria for surgery or are deemed to be at high risk for surgical therapy. We reviewed the available published data on medical therapy in the treatment of patients with primary MR. b-blockers and renin-angiotensin-aldosterone system inhibitors had the strongest supporting evidence for providing beneficial effects...
2016: Reviews in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27659028/phace-syndrome-consensus-derived-diagnosis-and-care-recommendations
#11
Maria C Garzon, Leon G Epstein, Geoffrey L Heyer, Peter C Frommelt, Darren B Orbach, Adriane L Baylis, Francine Blei, Patricia E Burrows, Sarah L Chamlin, Robert H Chun, Christopher P Hess, Shawna Joachim, Katherine Johnson, Wendy Kim, Marilyn G Liang, Mohit Maheshwari, Garrett N McCoy, Denise W Metry, Priya A Monrad, Elena Pope, Julie Powell, Tor A Shwayder, Dawn H Siegel, Megha M Tollefson, Sudhakar Vadivelu, Sean M Lew, Ilona J Frieden, Beth A Drolet
No abstract text is available yet for this article.
September 19, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27634025/impact-of-point-of-care-ultrasound-examination-on-triage-of-patients-with-suspected-cardiac-disease
#12
Sergio L Kobal, Noah Liel-Cohen, Sarah Shimony, Yoram Neuman, Yuval Konstantino, Efrat Mazor Dray, Itai Horowitz, Robert J Siegel
Complementing the physical examination with a point-of-care ultrasound study (POCUS) can improve patient triage. We aimed to study the impact of POCUS on the diagnosis and management of outpatients and hospitalized patients with suspected cardiac disease. In this multicenter study, a pocket-sized device was used to perform POCUS when the diagnosis or patient management was unclear based on anamnesis, physical examination, and basic diagnostic testing. Eighteen physicians (cardiac fellows 49%, cardiologists 30%, and echocardiographers 21%) performed physical examinations extended by POCUS on 207 patients (inpatients 83% and outpatients 17%)...
August 22, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27567510/leading-multi-sector-collaboration-lessons-from-the-aligning-forces-for-quality-national-program-office
#13
Katherine O Browne, Robert Graham, Bruce Siegel
No abstract text is available yet for this article.
August 2016: American Journal of Managed Care
https://www.readbyqxmd.com/read/27567136/medical-management-%C3%AE-blocker-%C3%A2-disopyramide-of-left-ventricular-outflow-gradient-secondary-to-systolic-anterior-motion-of-the-mitral-valve-after-repair
#14
Devin W Kehl, Florian Rader, Charles Pollick, Alfredo Trento, Robert J Siegel
Systolic anterior motion of the mitral valve (SAM) occurs intraoperatively after mitral valve repair (MVRr) in up to 14% of cases and typically resolves in the operating room with conservative measures. Less commonly SAM may also occur in the early or late postoperative period. The clinical course and optimal management of such cases is poorly defined, but reoperation is common. We describe our experience using disopyramide to successfully treat postoperative SAM refractory to beta blockade. Seven patients were retrospectively identified with mitral valve prolapse who underwent MVRr from 2003 to 2015 and were found during follow-up to have severe SAM with a left ventricular outflow tract (LVOT) gradient not observed intraoperatively...
October 1, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27547425/echo-doppler-determinants-of-outcomes-in-patients-with-unoperated-significant-mitral-regurgitation-in-current-era
#15
Asim M Rafique, Parham Zarrini, Nirmal Singh, Roy Beigel, Rigved Tadwalkar, Meshe Chonde, Leandro Slipczuk, Bojan Cercek, Saibal Kar, Robert J Siegel
OBJECTIVE: One-half of patients with severe symptomatic mitral regurgitation (MR) do not undergo surgery due to comorbidities. We evaluated prognosticators of outcomes in patients with unoperated significant MR. METHODS: In this observational study, we retrospectively evaluated medical records of 75 consecutive patients with unoperated significant MR. RESULTS: All-cause mortality was 39% at 5 years. Non-survivors (n=29) versus survivors (n=46) were: older (77±9...
2016: Open Heart
https://www.readbyqxmd.com/read/27515817/novel-rna-binding-activity-of-nqo1-promotes-serpina1-mrna-translation
#16
Andrea Di Francesco, Clara Di Germanio, Amaresh C Panda, Phu Huynh, Robert Peaden, Ignacio Navas-Enamorado, Paul Bastian, Elin Lehrmann, Alberto Diaz-Ruiz, David Ross, David Siegel, Jennifer L Martindale, Michel Bernier, Myriam Gorospe, Kotb Abdelmohsen, Rafael de Cabo
NAD(P)H: quinone oxidoreductase (NQO1) is essential for cell defense against reactive oxidative species, cancer, and metabolic stress. Recently, NQO1 was found in ribonucleoprotein (RNP) complexes, but NQO1-interacting mRNAs and the functional impact of such interactions are not known. Here, we used ribonucleoprotein immunoprecipitation (RIP) and microarray analysis to identify comprehensively the subset of NQO1 target mRNAs in human hepatoma HepG2 cells. One of its main targets, SERPINA1 mRNA, encodes the serine protease inhibitor α-1-antitrypsin, A1AT, which is associated with disorders including obesity-related metabolic inflammation, chronic obstructive pulmonary disease (COPD), liver cirrhosis and hepatocellular carcinoma...
October 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27471563/a-point-mutation-in-dna-polymerase-%C3%AE-polb-gene-is-associated-with-increased-progesterone-receptor-pr-expression-and-intraperitoneal-metastasis-in-gastric-cancer
#17
Xiaohui Tan, Xiaoling Wu, Shuyang Ren, Hongyi Wang, Zhongwu Li, Weaam Alshenawy, Wenmei Li, Jiantao Cui, Guangbin Luo, Robert S Siegel, Sidney W Fu, Youyong Lu
Increased expression of progesterone receptor (PR) has been reported in gastric cancer (GC). We have previously identified a functional T889C point mutation in DNA polymerase beta (POLB), a DNA repair gene in GC. To provide a detailed analysis of molecular changes associated with the mutation, human cDNA microarrays focusing on 18 signal transduction pathways were used to analyze differential gene expression profiles between GC tissues with T889C mutant in POLB gene and those with wild type. Among the differentially expressed genes, notably, PR was one of the significantly up-regulated genes in T889C mutant POLB tissues, which were subsequently confirmed in POLB gene transfected AGS cell line...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27461001/retroperitoneal-paravertebral-ganglioneuroma-a-multidisciplinary-approach-facilitates-less-radical-surgery
#18
Christoph Paasch, Anja Harder, Esther Jasmin Gatzky, Ehssan Ghadamgahi, Andreas Spuler, Robert Siegel
BACKGROUND: Ganglioneuroma (GN) of the adult is a rare benign tumour originating from neural crest-derived cells. In most cases, GN is found in the mediastinum or retroperitoneum incidentally and may present with unspecific symptoms caused by space-occupying effects. The correct diagnosis of a retroperitoneal mass is still a challenge. Nevertheless, a preoperatively confirmed diagnosis of GN may support the concept of a less radical approach and may help to prevent unnecessary morbidity or loss of function...
2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27445731/multiple-drug-treatments-that-increase-camp-signaling-restore-long-term-memory-and-aberrant-signaling-in-fragile-x-syndrome-models
#19
Catherine H Choi, Brian P Schoenfeld, Aaron J Bell, Joseph Hinchey, Cory Rosenfelt, Michael J Gertner, Sean R Campbell, Danielle Emerson, Paul Hinchey, Maria Kollaros, Neal J Ferrick, Daniel B Chambers, Steven Langer, Steven Sust, Aatika Malik, Allison M Terlizzi, David A Liebelt, David Ferreiro, Ali Sharma, Eric Koenigsberg, Richard J Choi, Natalia Louneva, Steven E Arnold, Robert E Featherstone, Steven J Siegel, R Suzanne Zukin, Thomas V McDonald, Francois V Bolduc, Thomas A Jongens, Sean M J McBride
Fragile X is the most common monogenic disorder associated with intellectual disability (ID) and autism spectrum disorders (ASD). Additionally, many patients are afflicted with executive dysfunction, ADHD, seizure disorder and sleep disturbances. Fragile X is caused by loss of FMRP expression, which is encoded by the FMR1 gene. Both the fly and mouse models of fragile X are also based on having no functional protein expression of their respective FMR1 homologs. The fly model displays well defined cognitive impairments and structural brain defects and the mouse model, although having subtle behavioral defects, has robust electrophysiological phenotypes and provides a tool to do extensive biochemical analysis of select brain regions...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27310344/reduced-prevalence-of-obesity-in-14-disadvantaged-black-communities-in-the-united-states-a-successful-4-year-place-based-participatory-intervention
#20
Youlian Liao, Paul Z Siegel, Lucas G Garraza, Ye Xu, Shaoman Yin, Melissa Scardaville, Tesfayi Gebreselassie, Robert L Stephens
OBJECTIVES: To assess the impact of a large-scale place-based intervention on obesity prevalence in Black communities. METHODS: The Racial and Ethnic Approaches to Community Health across the United States (REACH US) project was conducted in 14 predominantly Black communities in California, Illinois, Massachusetts, New York, Ohio, Pennsylvania, South Carolina, Virginia, Washington, and West Virginia. We measured trends from 2009 to 2012 in the prevalence of obesity...
August 2016: American Journal of Public Health
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