Thomas Abraham

ORCID: 0000-0003-0750-8774
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About
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Research Areas
  • Tendon Structure and Treatment
  • Lipid Membrane Structure and Behavior
  • Protease and Inhibitor Mechanisms
  • Immune Cell Function and Interaction
  • Cell Adhesion Molecules Research
  • Electrostatics and Colloid Interactions
  • MicroRNA in disease regulation
  • Polymer Surface Interaction Studies
  • Advanced Fluorescence Microscopy Techniques
  • RNA Interference and Gene Delivery
  • Risk Perception and Management
  • Sports injuries and prevention
  • Neonatal Respiratory Health Research
  • Proteoglycans and glycosaminoglycans research
  • Cancer-related Molecular Pathways
  • Pancreatic and Hepatic Oncology Research
  • Surfactants and Colloidal Systems
  • Force Microscopy Techniques and Applications
  • Green IT and Sustainability
  • Innovative Approaches in Technology and Social Development
  • Crop Yield and Soil Fertility
  • Immune cells in cancer
  • Biofuel production and bioconversion
  • Rice Cultivation and Yield Improvement
  • Biochemical and Structural Characterization

Ambo University
2016-2025

University of Ibadan
2024

Pennsylvania State University
2014-2024

Manchester University NHS Foundation Trust
2024

Stroke Association
2021-2023

Penn State Milton S. Hershey Medical Center
2014-2022

George Washington University
2022

Rajagiri Hospital
2022

University of Hong Kong
2007-2021

Core Laboratories (United States)
2018-2021

Background— Intimal smooth muscle cells (SMCs) contribute to the foam cell population in arterial plaque, and express lower levels of cholesterol exporter ATP-binding cassette transporter A1 (ABCA1) comparison with medial SMCs. The relative contribution SMCs total their expression ABCA1 intimal monocyte-derived macrophages, however, are unknown. Although macrophage markers by following lipid loading has been described, relevance this phenotypic switch human coronary atherosclerosis not...

10.1161/circulationaha.113.005015 article EN Circulation 2014-01-31

Abstract The mechanism of phagophore closure remains unclear due to technical limitations in distinguishing unclosed and closed autophagosomal membranes. Here, we report the HaloTag-LC3 autophagosome completion assay that specifically detects phagophores, nascent autophagosomes, mature autophagic structures. Using this assay, identify endosomal sorting complexes required for transport (ESCRT)-III component CHMP2A as a critical regulator closure. During autophagy, translocates regulates...

10.1038/s41467-018-05254-w article EN cc-by Nature Communications 2018-07-16

To study the levels of perceived threat, severity, vulnerability, response efficacy, and self-efficacy for severe acute respiratory syndrome (SARS) eight other diseases in five European three Asian countries.A computer-assisted phone survey was conducted among 3,436 respondents. The questionnaire focused on related to SARS diseases.Perceived threat case an outbreak country higher than that diseases. Perceived vulnerability at intermediate level severity high compared varied between countries...

10.1007/s12529-008-9008-2 article EN cc-by-nc International Journal of Behavioral Medicine 2009-01-06

Mathematical and computational models provide valuable tools that help public health planners to evaluate competing interventions, especially for novel circumstances cannot be examined through observational or controlled studies, such as pandemic influenza. The spread of diseases like influenza depends on the mixing patterns within population, these depend in part local factors including spatial distribution age structure size composition households, employment status commuting adults,...

10.1186/1471-2458-13-940 article EN cc-by BMC Public Health 2013-10-08
Richard A. Bernstein Hooman Kamel Christopher B. Granger Jonathan P. Piccini Pramod Sethi and 95 more Jeffrey M. Katz Carola Alfaro Vives Paul Ziegler Noreli Franco Lee H. Schwamm Indrani Acosta Pradipkumar Jamnadas Sushma Manda Rizwan Alimohammad Valerie Arias Kristi Tempro Kathleen Ward Khaled Asi Indrajit Choudhuri Waldo R. Guerrero Junaid Kalia Imran Khan Niazi Rehan Sajjad Varoon Thavapalan Manish D. Assar Javier E. Banchs James Black Peter Y. K. Cheung Alan Donsky Dion Graybeal Rashedul Hasan Osman Mir Claude Nguyen Gregory Olsovsky Jennifer Rasmussen Sanjeev Hasabnis Russell A. Reeves Chris Rowley Jitendra Sharma Macey Smith Kay Bonyak Matthew Sackett James Allred Pramod Sethi Richard Jung Jennifer A. Lynch Steven P. Rowe Subasini Dash Taya V. Glotzer Sameer Jamal Glauco Radoslovich Gunjan Shukla John Zimmerman Haitham M. Hussein Dennis W.X. Zhu Kristopher Krueger Matthew Ostrander Darwin Ramirez Jeffrey W. Shultz Jay Simonson Brett Cucchiara Rajat Deo David S. Frankel Judy Jia Scott E. Kasner Jeanie Luciano Steven R. Messé Michael T. Mullen Pasquale Santangeli Robert D. Schaller Qingyang Yuan Don Bledsoe Christian Cajavilca David Chiu Rajan Gadhia Maranda Randi Grimes Larry Katz Stacy Moye Tapan G. Rami Thomas Abraham John Volpi Ali Al Balushi Clara Boyd Subbarao Choudry Mandip S. Dhamoon Srinivas R. Dukkipati Davida Goltz Qing Hao Deborah Horowitz Gurmeen Kaur Jacob S. Koruth Christeena Kurian Marie-Noelle S. Langan Iván Díaz Marc L. Miller Vivek Y. Reddy Kara Sheinart Laura Stein Aaron Tansy Stanley Tuhrim

Patients with ischemic stroke attributed to large- or small-vessel disease are not considered at high risk for atrial fibrillation (AF), and the AF incidence rate in this population is unknown.To determine whether long-term cardiac monitoring more effective than usual care detection patients through 12 months of follow-up.The STROKE-AF trial was a randomized (1:1), multicenter (33 sites US) clinical that enrolled 496 between April 2016 July 2019, primary end point follow-up August 2020....

10.1001/jama.2021.6470 article EN JAMA 2021-06-01

During autumn 2005, we conducted 3,436 interviews in European and Asian countries. We found risk perceptions of avian influenza to be at an intermediate level beliefs efficacy slightly lower. Risk were higher Europe than Asia; [corrected] lower Asia.

10.3201/eid1302.060303 article EN cc-by Emerging infectious diseases 2007-02-01

Rationale : Myocardial infarction (MI) results in remodeling of the myocardium and extracellular matrix (ECM). Tissue inhibitors metalloproteinases (TIMPs) are critical regulators ECM integrity via inhibiting (MMPs). TIMP2 is highly expressed heart only TIMP that, addition to MMPs, required for cell surface activation pro-MMP2. Hence, it difficult predict function as protective (MMP-inhibiting) or harmful (MMP-activating) disease. Objective We examined role cardiac response MI. Methods...

10.1161/circresaha.109.209189 article EN Circulation Research 2010-01-08

Changes in cellular cholesterol affect insulin secretion, and β-cell-specific deletion or loss-of-function mutations the efflux transporter ATP-binding cassette A1 (ABCA1) result impaired glucose tolerance β-cell dysfunction. Upregulation of ABCA1 expression may therefore be beneficial for maintenance normal islet function diabetes. Studies suggest that microRNA-33a (miR-33a) inversely correlates with hepatocytes macrophages. We examined whether miR-33a regulates pancreatic islets, thereby...

10.2337/db11-0944 article EN cc-by-nc-nd Diabetes 2012-02-09

The process of phagophore closure requires the endosomal sorting complex required for transport III (ESCRT-III) subunit CHMP2A and AAA ATPase VPS4, but their regulatory mechanisms remain unknown. Here, we establish a FACS-based HaloTag-LC3 autophagosome completion assay to screen genome-wide CRISPR library identify ESCRT-I VPS37A as critical component closure. localizes on through N-terminal putative ubiquitin E2 variant domain, which is found be dispensable formation degradation epidermal...

10.1083/jcb.201902170 article EN cc-by-nc-sa The Journal of Cell Biology 2019-09-13

Pancreatic ductal adenocarcinoma (PDAC) tumor growth is enhanced by tumor-associated macrophages (TAMs), yet the mechanisms which cells and TAMs communicate are not fully understood. Here we show that exosomes secreted PDAC cell lines differed in their surface proteins, lipid composition, efficiency of fusing with THP-1-derived vitro. Exosomes from AsPC-1, an ascites-derived human line, were enriched ICAM-1, mediated docking to through interactions surface-exposed CD11c on macrophages....

10.1371/journal.pone.0206759 article EN cc-by PLoS ONE 2018-11-01

Abstract FOXP3 is required for the development of Treg and its expression often used as a surrogate marker functional suppression. However, it now known that activated human T effector cells can also express without acquiring regulatory activity. To more closely examine requirements to reprogram into Treg, we developed conditionally active form show here full acquisition phenotype function strictly dependent on amount cell expresses. In addition, phenotypic alterations induced by are only...

10.1002/eji.200838373 article EN European Journal of Immunology 2008-11-27

The calcium-permeable ion channel TRPM2 is highly expressed in a number of cancers. In neuroblastoma, full-length (TRPM2-L) protected cells from moderate oxidative stress through increased levels forkhead box transcription factor 3a (FOXO3a) and superoxide dismutase 2. Cells expressing the dominant negative short isoform (TRPM2-S) had reduced FOXO3a 2 levels, calcium influx response to stress, enhanced reactive oxygen species, leading decreased cell viability. Here, xenografts generated with...

10.1074/jbc.m114.620922 article EN cc-by Journal of Biological Chemistry 2014-11-13

Background While the morbidity and mortality from cancer are largely attributable to its metastatic dissemination, integral features of cascade not well understood. The widely accepted hypothesis is that primary tumor microenvironment induces epithelial-to-mesenchymal transition in cells, facilitating their escape into bloodstream, possibly accompanied by stem cells. An alternative theory for metastasis involves fusion macrophages with cells (MTFs). Here we culture characterize apparent MTFs...

10.1371/journal.pone.0134320 article EN cc-by PLoS ONE 2015-08-12

The influenza pandemic of 2009 revealed shortcomings in the existing guidelines for risk and outbreak communication. Concepts such as building trust proved hard to achieve practice, whereas other issues communicating through internet coping with political fallout disease outbreaks are not dealt guidelines. This article surveys current makes recommendations additional tools be developed four areas: integrating long-term behavior change models communications; research develop a better...

10.3402/ehtj.v4i0.7160 article EN cc-by-nc Emerging Health Threats Journal 2011-01-01

Here we describe isolation and characterization of macrophage-tumor cell fusions (MTFs) from the blood pancreatic ductal adenocarcinoma (PDAC) patients. The MTFs were generally aneuploidy, immunophenotypic characterizations showed that express markers characteristic PDAC stem cells, as well M2-polarized macrophages. Single RNASeq analyses many transcripts implicated in cancer progression, LINE1 retrotransposons, very high levels several long non-coding involved metastasis (such MALAT1). When...

10.1371/journal.pone.0184451 article EN cc-by PLoS ONE 2017-09-28

Extracellular matrix (ECM) remodeling is a critical aspect of cardiac following myocardial infarction. Tissue inhibitors metalloproteinases (TIMPs) are physiological (MMPs) that degrade the ECM proteins. TIMP3 highly expressed in heart, and markedly downregulated patients with ischemic cardiomyopathy. We therefore examined time- region-dependent role response to infarction (MI). TIMP3(-/-) wild-type (WT) mice were subjected MI by ligation left anterior descending artery. TIMP3(-/-)-MI...

10.1152/ajpheart.00246.2010 article EN AJP Heart and Circulatory Physiology 2010-07-31

Granzyme B (GZMB) is a proapoptotic serine protease that released by cytotoxic lymphocytes. However, GZMB can also be produced other cell types and capable of cleaving extracellular matrix (ECM) proteins. contributes to abdominal aortic aneurysm (AAA) through an extracellular, perforin-independent mechanism involving ECM cleavage. The murine inhibitor, Serpina3n (SA3N), inhibitor GZMB. In the present study, administration SA3N was assessed using mouse Angiotensin II-induced AAA model. Mice...

10.1038/cddis.2011.88 article EN cc-by Cell Death and Disease 2011-09-08

Atg9 is a multispanning transmembrane protein that required for autophagosome formation. During autophagy, vesicles containing are generated through an unknown mechanism and delivered to the formation sites. We have previously reported Atg9-containing membranes undergo continuous tubulation fission during nutrient starvation in manner dependent on curvature-inducing Bif-1/Sh3glb1. Here, we identify Dynamin 2 (DNM2) as Bif-1-interacting mediates of autophagy. The interaction Bif-1 DNM2...

10.18632/oncotarget.8028 article EN Oncotarget 2016-03-10
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