201
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Menke L, Sieben C. An Improved Workflow for the Quantification of Orthohantavirus Infection Using Automated Imaging and Flow Cytometry. Viruses 2024; 16:269. [PMID: 38400044 PMCID: PMC10891500 DOI: 10.3390/v16020269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/26/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Determination of the infectious titer is a central requirement when working with pathogenic viruses. The plaque or focus assay is a commonly used but labor- and time-consuming approach for determining the infectious titer of orthohantavirus samples. We have developed an optimized virus quantification approach that relies on the fluorescence-based detection of the orthohantavirus nucleocapsid protein (N) in infected cells with high sensitivity. We present the use of flow cytometry but highlight fluorescence microscopy in combination with automated data analysis as an attractive alternative to increase the information retrieved from an infection experiment. Additionally, we offer open-source software equipped with a user-friendly graphical interface, eliminating the necessity for advanced programming skills.
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Affiliation(s)
- Laura Menke
- Nanoscale Infection Biology, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany;
| | - Christian Sieben
- Nanoscale Infection Biology, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany;
- Institute of Genetics, Technische Universität Braunschweig, Spielmannstr. 7, 38106 Braunschweig, Germany
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202
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Czarnecki P, Siemionow M, Baek GH, Górecki M, Romanowski L. Hand and wrist - what the hand surgeon wants to know from the radiologist. Pol J Radiol 2024; 89:e70-e79. [PMID: 38510550 PMCID: PMC10953511 DOI: 10.5114/pjr.2024.135304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/30/2024] [Indexed: 03/22/2024] Open
Abstract
Hand surgeons, as unique specialists, appreciate the complexity of the anatomy of the hand. A hand is not merely a group of anatomic structures but a separate organ that works by feeling, sending information to the brain, and enabling a variety of movements, from precise skills to firm tasks. Acute and chronic problems interfere with complicated hand function and potentially influence work or daily life activities for a long time. Thus, the surgeon's role is to propose appropriate treatment with predictable results. This paper attempts to specify the preoperative considerations and their influence on the choice of surgical procedure and the assessment of results potentially influencing further treatment. We have divided the manuscript by anatomical structures, which is a natural surgical assessment and planning approach. The most common problems were highlighted to introduce the method of decision-making and surgical solutions.
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Affiliation(s)
- Piotr Czarnecki
- Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences, Poznań, Poland
| | - Maria Siemionow
- Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences, Poznań, Poland
- Department of Orthopaedics, The University of Illinois at Chicago, Chicago, Illinois, USA
| | - Goo Hyun Baek
- Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Michał Górecki
- Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences, Poznań, Poland
| | - Leszek Romanowski
- Department of Traumatology, Orthopaedics and Hand Surgery, Poznań University of Medical Sciences, Poznań, Poland
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203
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Simonini L, Frijia F, Ait Ali L, Foffa I, Vecoli C, De Gori C, De Cori S, Baroni M, Aquaro GD, Maremmani C, Lombardo F. A Comprehensive Review of COVID-19-Related Olfactory Deficiency: Unraveling Associations with Neurocognitive Disorders and Magnetic Resonance Imaging Findings. Diagnostics (Basel) 2024; 14:359. [PMID: 38396398 PMCID: PMC10888385 DOI: 10.3390/diagnostics14040359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Olfactory dysfunction (OD) is one of the most common symptoms in COVID-19 patients and can impact patients' lives significantly. The aim of this review was to investigate the multifaceted impact of COVID-19 on the olfactory system and to provide an overview of magnetic resonance (MRI) findings and neurocognitive disorders in patients with COVID-19-related OD. Extensive searches were conducted across PubMed, Scopus, and Google Scholar until 5 December 2023. The included articles were 12 observational studies and 1 case report that assess structural changes in olfactory structures, highlighted through MRI, and 10 studies correlating the loss of smell with neurocognitive disorders or mood disorders in COVID-19 patients. MRI findings consistently indicate volumetric abnormalities, altered signal intensity of olfactory bulbs (OBs), and anomalies in the olfactory cortex among COVID-19 patients with persistent OD. The correlation between OD and neurocognitive deficits reveals associations with cognitive impairment, memory deficits, and persistent depressive symptoms. Treatment approaches, including olfactory training and pharmacological interventions, are discussed, emphasizing the need for sustained therapeutic interventions. This review points out several limitations in the current literature while exploring the intricate effects of COVID-19 on OD and its connection to cognitive deficits and mood disorders. The lack of objective olfactory measurements in some studies and potential validity issues in self-reports emphasize the need for cautious interpretation. Our research highlights the critical need for extensive studies with larger samples, proper controls, and objective measurements to deepen our understanding of COVID-19's long-term effects on neurological and olfactory dysfunctions.
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Affiliation(s)
- Ludovica Simonini
- Institute of Clinical Physiology, National Research Council (CNR), 54100 Massa, Italy; (I.F.); (C.V.)
| | - Francesca Frijia
- Bioengineering Unit, Fondazione Toscana G. Monasterio, 56124 Pisa, Italy;
| | - Lamia Ait Ali
- Institute of Clinical Physiology, National Research Council (CNR), 54100 Massa, Italy; (I.F.); (C.V.)
- Pediatric Cardiology and GUCH Unit, Fondazione “G. Monasterio” CNR-Regione Toscana, 54100 Massa, Italy
| | - Ilenia Foffa
- Institute of Clinical Physiology, National Research Council (CNR), 54100 Massa, Italy; (I.F.); (C.V.)
| | - Cecilia Vecoli
- Institute of Clinical Physiology, National Research Council (CNR), 54100 Massa, Italy; (I.F.); (C.V.)
| | - Carmelo De Gori
- Department of Radiology, Fondazione Monasterio/CNR, 56124 Pisa, Italy; (C.D.G.); (S.D.C.); (F.L.)
| | - Sara De Cori
- Department of Radiology, Fondazione Monasterio/CNR, 56124 Pisa, Italy; (C.D.G.); (S.D.C.); (F.L.)
| | - Monica Baroni
- Fondazione “G. Monasterio” CNR-Regione Toscana, 54100 Massa, Italy;
| | - Giovanni Donato Aquaro
- Academic Radiology Unit, Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56124 Pisa, Italy;
| | - Carlo Maremmani
- Unit of Neurology, Ospedale Apuane, Azienda USL Toscana Nord Ovest, 54100 Massa, Italy;
| | - Francesco Lombardo
- Department of Radiology, Fondazione Monasterio/CNR, 56124 Pisa, Italy; (C.D.G.); (S.D.C.); (F.L.)
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204
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Cavanagh G, Louis DW, Atalay MK. Left Anterior Descending Coronary Artery Mimic: A Case of Coronary Artery to Pulmonary Artery Fistula. JACC Case Rep 2024; 29:102187. [PMID: 38361563 PMCID: PMC10865127 DOI: 10.1016/j.jaccas.2023.102187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 02/17/2024]
Abstract
Coronary artery fistulas (CAFs) are rare coronary anomalies involving the communication of an epicardial coronary artery and another cardiovascular structure. CAFs are usually easily distinguished from nearby coronary arteries. Here, we report a unique case of CAF that mimics the size, branching pattern, and appearance of a native epicardial left anterior descending artery.
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Affiliation(s)
- Gregory Cavanagh
- Department of Diagnostic Imaging, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - David W. Louis
- The Lifespan Cardiovascular Institute, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Michael K. Atalay
- Department of Diagnostic Imaging, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
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205
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Jochems ACC, Muñoz Maniega S, Clancy U, Arteaga C, Jaime Garcia D, Chappell FM, Hewins W, Locherty R, Backhouse EV, Barclay G, Jardine C, McIntyre D, Gerrish I, Kampaite A, Sakka E, Valdés Hernández M, Wiseman S, Bastin ME, Stringer MS, Thrippleton MJ, Doubal FN, Wardlaw JM. Magnetic Resonance Imaging Tissue Signatures Associated With White Matter Changes Due to Sporadic Cerebral Small Vessel Disease Indicate That White Matter Hyperintensities Can Regress. J Am Heart Assoc 2024; 13:e032259. [PMID: 38293936 DOI: 10.1161/jaha.123.032259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/21/2023] [Indexed: 02/01/2024]
Abstract
BACKGROUND White matter hyperintensities (WMHs) might regress and progress contemporaneously, but we know little about underlying mechanisms. We examined WMH change and underlying quantitative magnetic resonance imaging tissue measures over 1 year in patients with minor ischemic stroke with sporadic cerebral small vessel disease. METHODS AND RESULTS We defined areas of stable normal-appearing white matter, stable WMHs, progressing and regressing WMHs based on baseline and 1-year brain magnetic resonance imaging. In these areas we assessed tissue characteristics with quantitative T1, fractional anisotropy (FA), mean diffusivity (MD), and neurite orientation dispersion and density imaging (baseline only). We compared tissue signatures cross-sectionally between areas, and longitudinally within each area. WMH change masks were available for N=197. Participants' mean age was 65.61 years (SD, 11.10), 59% had a lacunar infarct, and 68% were men. FA and MD were available for N=195, quantitative T1 for N=182, and neurite orientation dispersion and density imaging for N=174. Cross-sectionally, all 4 tissue classes differed for FA, MD, T1, and Neurite Density Index. Longitudinally, in regressing WMHs, FA increased with little change in MD and T1 (difference estimate, 0.011 [95% CI, 0.006-0.017]; -0.002 [95% CI, -0.008 to 0.003] and -0.003 [95% CI, -0.009 to 0.004]); in progressing and stable WMHs, FA decreased (-0.022 [95% CI, -0.027 to -0.017] and -0.009 [95% CI, -0.011 to -0.006]), whereas MD and T1 increased (progressing WMHs, 0.057 [95% CI, 0.050-0.063], 0.058 [95% CI, 0.050 -0.066]; stable WMHs, 0.054 [95% CI, 0.045-0.063], 0.049 [95% CI, 0.039-0.058]); and in stable normal-appearing white matter, MD increased (0.004 [95% CI, 0.003-0.005]), whereas FA and T1 slightly decreased and increased (-0.002 [95% CI, -0.004 to -0.000] and 0.005 [95% CI, 0.001-0.009]). CONCLUSIONS Quantitative magnetic resonance imaging shows that WMHs that regress have less abnormal microstructure at baseline than stable WMHs and follow trajectories indicating tissue improvement compared with stable and progressing WMHs.
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Affiliation(s)
- Angela C C Jochems
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Susana Muñoz Maniega
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Una Clancy
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Carmen Arteaga
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Daniela Jaime Garcia
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Francesca M Chappell
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Will Hewins
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Rachel Locherty
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Ellen V Backhouse
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Gayle Barclay
- Edinburgh Imaging Facility, Royal Infirmary of Edinburgh Edinburgh United Kingdom
| | - Charlotte Jardine
- Edinburgh Imaging Facility, Royal Infirmary of Edinburgh Edinburgh United Kingdom
| | - Donna McIntyre
- Edinburgh Imaging Facility, Royal Infirmary of Edinburgh Edinburgh United Kingdom
| | - Iona Gerrish
- Edinburgh Imaging Facility, Royal Infirmary of Edinburgh Edinburgh United Kingdom
| | - Agniete Kampaite
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
| | - Eleni Sakka
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
| | - Maria Valdés Hernández
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Stewart Wiseman
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Mark E Bastin
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
| | - Michael S Stringer
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Michael J Thrippleton
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
- Edinburgh Imaging Facility, Royal Infirmary of Edinburgh Edinburgh United Kingdom
| | - Fergus N Doubal
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
| | - Joanna M Wardlaw
- Centre for Clinical Brain Sciences University of Edinburgh Edinburgh United Kingdom
- UK Dementia Research Institute at the University of Edinburgh Edinburgh United Kingdom
- Edinburgh Imaging Facility, Royal Infirmary of Edinburgh Edinburgh United Kingdom
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206
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Weick S, Grosse M. Investigating Hydrogen in Zirconium Alloys by Means of Neutron Imaging. Materials (Basel) 2024; 17:781. [PMID: 38399032 PMCID: PMC10890486 DOI: 10.3390/ma17040781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024]
Abstract
Neutrons interact with the magnetic moment of the atomic shell of an atom, as is common for X-rays, but mainly they interact directly with the nucleus. Therefore, the atomic number and the related number of electrons does not play a role in the strength of an interaction. Instead, hydrogen that is nearly invisible for X-rays has a higher attenuation for neutrons than most of the metals, e.g., zirconium, and thus would be visible through dark contrast in neutron images. Consequently, neutron imaging is a precise, non-destructive method to quantify the amount of hydrogen in materials with low attenuation. Because nuclear fuel cladding tubes of light water reactors are made of zirconium (98%), the hydrogen amount and distribution in metallic claddings can be investigated. Even hydrogen concentrations smaller than 10 wt.ppm can be determined locally with a spatial resolution of less than 10 μm (with a high-resolution neutron microscope). All in all, neutron imaging is a very fast and precise method for several applications. This article explains the basics of neutron imaging and provides samples of investigation possibilities, e.g., for hydrogen in zirconium alloy cladding tubes or in situ investigations of hydrogen diffusion in metals.
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Affiliation(s)
- Sarah Weick
- Institute for Applied Materials-Applied Materials Physics, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Mirco Grosse
- Institute for Applied Materials-Applied Materials Physics, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
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207
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Pastormerlo LE, De Caterina AR, Esposito A, Korsholm K, Berti S. State-of-the-Art of Transcatheter Left Atrial Appendage Occlusion. J Clin Med 2024; 13:939. [PMID: 38398253 PMCID: PMC10889674 DOI: 10.3390/jcm13040939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Left atrial appendage occlusion (LAAO) is an increasingly used alternative to oral anticoagulation in patients with atrial fibrillation, especially in patients with absolute/relative contraindications to these therapies. This review will cover three main aspects of the procedure. In the fist part of the manuscript, we focus on patient selection. We describe three main categories of patients with primary indication to LAAO, namely patients with previous or at a high risk of intracerebral bleeding, patients with a history of major gastrointestinal bleeding and patients with end-stage renal disease and absolute contraindication to novel oral anticoagulants. Some other potential indications are also described. In the second part of the manuscript, we review available devices, trying to highlight different aspects and potential specific advantages. The last section overviews different ways for pre-, intra- and postprocedural imaging, in order to improve procedural safety and efficacy and ameliorate patient outcome. The characteristics of available contemporary devices and the role of imaging in procedural planning, intraprocedural guidance and follow-up are described.
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Affiliation(s)
- Luigi Emilio Pastormerlo
- UOC Diagnostica Interventistica Fondazione Toscana Gabriele Monasterio Massa, 54100 Massa, Italy
| | | | - Augusto Esposito
- UOC Diagnostica Interventistica Fondazione Toscana Gabriele Monasterio Massa, 54100 Massa, Italy
| | - Kasper Korsholm
- Department of Cardiology, Aarhus University Hospital, C319, 8200 Aarhus, Denmark
| | - Sergio Berti
- UOC Diagnostica Interventistica Fondazione Toscana Gabriele Monasterio Massa, 54100 Massa, Italy
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208
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Albano D, Treglia G. Editorial: A year in review: discussions in nuclear medicine. Front Med (Lausanne) 2024; 11:1370082. [PMID: 38379559 PMCID: PMC10877022 DOI: 10.3389/fmed.2024.1370082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 01/25/2024] [Indexed: 02/22/2024] Open
Affiliation(s)
- Domenico Albano
- Division of Nuclear Medicine, Università degli Studi di Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Giorgio Treglia
- Division of Nuclear Medicine, Ente Ospedaliero Cantonale, Imaging Institute of Southern Switzerland, Bellinzona, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
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209
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Zelinger E, Brumfeld V, Rechav K, Waiger D, Kossovsky T, Heifetz Y. Three-dimensional correlative microscopy of the Drosophila female reproductive tract reveals modes of communication in seminal receptacle sperm storage. Commun Biol 2024; 7:155. [PMID: 38321098 PMCID: PMC10847118 DOI: 10.1038/s42003-024-05829-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 01/17/2024] [Indexed: 02/08/2024] Open
Abstract
In many taxa, females store sperm in specialized storage organs. Most insect sperm storage organs have a tubular structure, typically consisting of a central lumen surrounded by epithelial cells. These specialized tubules perform the essential tasks of transporting sperm through the female reproductive tract and supporting long-term sperm survival and function. Little is known about the way in which female sperm storage organs provide an environment conducive to sperm survival. We address this using a combined light microscopy, micro computed tomography (microCT), and Focused Ion Beam Scanning Electron Microscopy (FIB-SEM) approach for high-resolution correlative three-dimensional imaging to advance our understanding of sperm-female interactions in Drosophila melanogaster. Using this multimodal approach, we were able to scan the lower female reproductive tract and distal portion of the seminal receptacle at low magnification, and to subsequently zoom in for further analysis on an ultrastructural level. Our findings highlight aspects of the way in which the seminal receptacle keeps sperm viable in the lumen, and set the stage for further studies. The methods developed are suitable not only for Drosophila but also for other organisms with soft, delicate tissues.
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Affiliation(s)
- Einat Zelinger
- Department of Entomology, The Hebrew University, Rehovot, Israel
- Center for Scientific Imaging, The Hebrew University, Rehovot, Israel
| | - Vlad Brumfeld
- Chemical Research Support Department, Weizmann Institute, Rehovot, Israel
| | - Katya Rechav
- Chemical Research Support Department, Weizmann Institute, Rehovot, Israel
| | - Daniel Waiger
- Center for Scientific Imaging, The Hebrew University, Rehovot, Israel
| | - Tally Kossovsky
- Center for Scientific Imaging, The Hebrew University, Rehovot, Israel
| | - Yael Heifetz
- Department of Entomology, The Hebrew University, Rehovot, Israel.
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210
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Cao R, Zhang Y, Houston J. Editorial: Phasor analysis for fluorescence lifetime data. Front Bioinform 2024; 4:1375480. [PMID: 38379812 PMCID: PMC10877046 DOI: 10.3389/fbinf.2024.1375480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 02/22/2024] Open
Affiliation(s)
- Ruofan Cao
- Florida Research and Innovation Center, Cleveland Clinic, Port St. Lucie, FL, United States
| | - Yide Zhang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, CA, United States
| | - Jessica Houston
- Chemical and Materials Engineering, New Mexico State University, Las Cruces, NM, United States
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211
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Shen Q, Song G, Lin H, Bai H, Huang Y, Lv F, Wang S. Sensing, Imaging, and Therapeutic Strategies Endowing by Conjugate Polymers for Precision Medicine. Adv Mater 2024:e2310032. [PMID: 38316396 DOI: 10.1002/adma.202310032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/29/2024] [Indexed: 02/07/2024]
Abstract
Conjugated polymers (CPs) have promising applications in biomedical fields, such as disease monitoring, real-time imaging diagnosis, and disease treatment. As a promising luminescent material with tunable emission, high brightness and excellent stability, CPs are widely used as fluorescent probes in biological detection and imaging. Rational molecular design and structural optimization have broadened absorption/emission range of CPs, which are more conductive for disease diagnosis and precision therapy. This review provides a comprehensive overview of recent advances in the application of CPs, aiming to elucidate their structural and functional relationships. The fluorescence properties of CPs and the mechanism of detection signal amplification are first discussed, followed by an elucidation of their emerging applications in biological detection. Subsequently, CPs-based imaging systems and therapeutic strategies are illustrated systematically. Finally, recent advancements in utilizing CPs as electroactive materials for bioelectronic devices are also investigated. Moreover, the challenges and outlooks of CPs for precision medicine are discussed. Through this systematic review, it is hoped to highlight the frontier progress of CPs and promote new breakthroughs in fundamental research and clinical transformation.
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Affiliation(s)
- Qi Shen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Gang Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hongrui Lin
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Haotian Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yiming Huang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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212
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Verdaguer-Faja J, Toll A, Boada A, Guerra-Amor Á, Ferrándiz-Pulido C, Jaka A. Management of Cutaneous Squamous Cell Carcinoma of the Scalp: The Role of Imaging and Therapeutic Approaches. Cancers (Basel) 2024; 16:664. [PMID: 38339415 PMCID: PMC10854799 DOI: 10.3390/cancers16030664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/24/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common subtype of skin cancer. The scalp is one of the most frequently affected locations and is associated with a higher rate of complications, compared to other locations. In addition, it has a characteristic thickness and anatomical structure that may influence both growth pattern and treatment of primary cSCC; while clinical peripheral margins may be easily achieved during the surgery, vertical excision of the tumor is limited by the skull. Despite having a unique anatomy, current guidelines do not contemplate specific recommendations for scalp cSCC, which leads to inconsistent decision-making in multidisciplinary committees when discussing tumors with high risk factors or with close margins. This article provides specific recommendations for the management of patients with scalp cSCC, based on current evidence, as well as those aspects in which evidence is lacking, pointing out possible future lines of research. Topics addressed include epidemiology, clinical presentation and diagnosis, imaging techniques, surgical and radiation treatments, systemic therapy for advanced cases, and follow-up. The primary focus of this review is on management of primary cSCC of the scalp with localized disease, although where relevant, some points about recurrent cSCCs or advanced disease cases are also discussed.
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Affiliation(s)
- Júlia Verdaguer-Faja
- Department of Dermatology, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Spain; (J.V.-F.); (A.B.)
- Departament de Medicina, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain
| | - Agustí Toll
- Department of Dermatology, Hospital Clínic de Barcelona, Universitat de Barcelona, 08036 Barcelona, Spain;
| | - Aram Boada
- Department of Dermatology, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Spain; (J.V.-F.); (A.B.)
- Departament de Medicina, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain
| | - Álvaro Guerra-Amor
- Department of Dermatology, Hospital Universitari Vall d’Hebron, 08035 Barcelona, Spain;
| | - Carla Ferrándiz-Pulido
- Departament de Medicina, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain
- Department of Dermatology, Hospital Universitari Vall d’Hebron, 08035 Barcelona, Spain;
| | - Ane Jaka
- Department of Dermatology, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Spain; (J.V.-F.); (A.B.)
- Departament de Medicina, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain
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213
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Badawy M, Elsayes KM, Lubner MG, Shehata MA, Fowler K, Kaoud A, Pickhardt PJ. Metabolic syndrome: imaging features and clinical outcomes. Br J Radiol 2024; 97:292-305. [PMID: 38308038 DOI: 10.1093/bjr/tqad044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 09/19/2023] [Accepted: 11/27/2023] [Indexed: 02/04/2024] Open
Abstract
Metabolic syndrome, which affects around a quarter of adults worldwide, is a group of metabolic abnormalities characterized mainly by insulin resistance and central adiposity. It is strongly correlated with cardiovascular and all-cause mortality. Early identification of the changes induced by metabolic syndrome in target organs and timely intervention (eg, weight reduction) can decrease morbidity and mortality. Imaging can monitor the main components of metabolic syndrome and identify early the development and progression of its sequelae in various organs. In this review, we discuss the imaging features across different modalities that can be used to evaluate changes due to metabolic syndrome, including fatty deposition in different organs, arterial stiffening, liver fibrosis, and cardiac dysfunction. Radiologists can play a vital role in recognizing and following these target organ injuries, which in turn can motivate lifestyle modification and therapeutic intervention.
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Affiliation(s)
- Mohamed Badawy
- Department of Diagnostic Radiology, Wayne State University, Detroit, MI, 48202, United States
| | - Khaled M Elsayes
- Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, United States
| | - Meghan G Lubner
- Department of Diagnostic Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792, United States
| | - Mostafa A Shehata
- Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, United States
| | - Kathryn Fowler
- Department of Diagnostic Radiology, University of California San Diego, San Diego, CA, 92093, United States
| | - Arwa Kaoud
- Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, United States
| | - Perry J Pickhardt
- Department of Diagnostic Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792, United States
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214
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Ulanova M, Gloag L, Kim CK, Bongers A, Kim Duong HT, Gooding JJ, Tilley RD, Sachdev PS, Braidy N. Biocompatibility and proteomic profiling of DMSA-coated iron nanocubes in a human glioblastoma cell line. Nanomedicine (Lond) 2024; 19:303-323. [PMID: 38270934 DOI: 10.2217/nnm-2023-0304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Abstract
Background: Superparamagnetic iron core iron oxide shell nanocubes have previously shown superior performance in magnetic resonance imaging T2 contrast enhancement compared with spherical nanoparticles. Methods: Iron core iron oxide shell nanocubes were synthesized, stabilized with dimercaptosuccinic acid (DMSA-NC) and physicochemically characterized. MRI contrast enhancement and biocompatibility were assessed in vitro. Results: DMSA-NC showed a transverse relaxivity of 122.59 mM-1·s-1 Fe. Treatment with DMSA-NC did not induce cytotoxicity or oxidative stress in U-251 cells, and electron microscopy demonstrated DMSA-NC localization within endosomes and lysosomes in cells following internalization. Global proteomics revealed dysregulation of iron storage, transport, transcription and mRNA processing proteins. Conclusion: DMSA-NC is a promising T2 MRI contrast agent which, in this preliminary investigation, demonstrates favorable biocompatibility with an astrocyte cell model.
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Affiliation(s)
- Marina Ulanova
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Lucy Gloag
- School of Mathematical & Physical Science, Faculty of Science, University of Technology Sydney, Sydney, New South Wales, 2007, Australia
| | - Chul-Kyu Kim
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Andre Bongers
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales, 2052, Australia
- Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, 2052, Australia
- National Imaging Facility, University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Hong Thien Kim Duong
- School of Chemistry, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - J Justin Gooding
- School of Chemistry, University of New South Wales, Sydney, New South Wales, 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Richard D Tilley
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales, 2052, Australia
- School of Chemistry, University of New South Wales, Sydney, New South Wales, 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Perminder S Sachdev
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, New South Wales, 2052, Australia
- Neuropsychiatric Institute, Euroa Centre, Prince of Wales Hospital, Sydney, New South Wales, 2031, Australia
| | - Nady Braidy
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, New South Wales, 2052, Australia
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215
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Kuhn JE. Adaptive pathology: new insights into the physical examination and imaging of the thrower's shoulder and elbow. J Shoulder Elbow Surg 2024; 33:474-493. [PMID: 37652215 DOI: 10.1016/j.jse.2023.07.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/14/2023] [Accepted: 07/21/2023] [Indexed: 09/02/2023]
Abstract
Throwing with high velocity requires extremes of glenohumeral external rotation of the abducted arm where particularly high forces in the shoulder and elbow are endured. Repeated throwing leads to dominant-arm bony remodeling of the humerus, glenoid, and elbow, and multiple soft tissue changes that would be considered abnormal. Many of these features are thought to be adaptive and protective. The purpose of this work is to (1) define the concept of adaptive pathology; (2) review the mechanics of the throwing motion; (3) review pertinent physical examination and imaging findings seen in asymptomatic throwers' shoulders and elbows and describe how these changes develop and may be adaptive-allowing the thrower to perform at high levels; and then (4) review the principles of surgical treatment in the throwing athletes, which should focus on reducing symptoms, but not necessarily restoring the thrower's anatomy to normal.
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Affiliation(s)
- John E Kuhn
- Vanderbilt Sports Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
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216
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Mansbridge N, Kallis G, He J, Pearce I, Fenner J. Physical examination and CT to assess thoracic injury in 137 cats presented to UK referral hospitals after trauma. J Feline Med Surg 2024; 26:1098612X241228050. [PMID: 38415622 DOI: 10.1177/1098612x241228050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
OBJECTIVES The aim of the study was to describe clinical examination and thoracic CT (TCT) findings in cats after trauma, and to identify physical examination findings associated with both abnormalities on TCT and the need for therapeutic interventions. METHODS A multicentre, retrospective, observational study was conducted. Cats admitted to the participating hospitals with a history of blunt trauma and that underwent TCT were eligible. Data were collected on signalment, history, physical examination, TCT findings and subsequent interventions. RESULTS In total, 137 cats were included. Road traffic accidents (RTAs) were the most frequently reported cause of trauma (69%). Tachypnoea (32%), pale mucous membranes (22%) and dyspnoea (20%) were the most common abnormal findings on thoracic examination. The most frequently identified thoracic pathologies on TCT were atelectasis (34%), pulmonary contusions (33%), pneumothorax (29%) and pleural effusion (20%). Thoracocentesis was the most commonly performed intervention (12%), followed by chest drain placement (7%). A total of 45 (33%) cats had no physical examination abnormalities but did have abnormalities detected on TCT; six of these cats required interventions. Increasing numbers of thoracic abnormalities on clinical examination were associated with increasing likelihood of having abnormal findings on TCT (odds ratio [OR] 2.04, 95% confidence interval [CI] 1.21-3.44, P = 0.008) and of requiring an intervention (OR 1.82, 95% CI 1.32-2.51, P <0.001). CONCLUSIONS AND RELEVANCE RTAs were the most common reported cause of blunt trauma. Atelectasis, pulmonary contusions and pneumothorax were the most common abnormalities identified on TCT, and thoracic drainage was the most utilised intervention. TCT may be useful in identifying cats with normal thoracic physical examination findings that have significant thoracic pathology, and a high number of abnormal findings on thoracic examination should raise suspicion for both minor and major thoracic pathology. The results of this study can be used to assist in selecting appropriate cases for TCT after blunt trauma.
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Affiliation(s)
| | - Giorgio Kallis
- Davies Veterinary Specialists, Higham Gobion, Hitchin, UK
| | - Jinjing He
- Willows Veterinary Centre & Referral Service, Solihull, UK
| | | | - Joy Fenner
- Dick White Referrals, Station Farm, Six Mile Bottom, Cambridgeshire, UK
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217
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Bice EM, Galek KE, Ward M. Dysphagia and Diets in Skilled Nursing Facilities When Patient's Health Status Changes: The Role of Imaging. J Am Med Dir Assoc 2024; 25:381-386. [PMID: 38109943 DOI: 10.1016/j.jamda.2023.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 11/06/2023] [Accepted: 11/06/2023] [Indexed: 12/20/2023]
Abstract
OBJECTIVES Research suggests that clinical decision making for assessing and treating patients with swallowing dysfunction varies significantly, and decisions may harm patients. The study aimed to investigate clinical practice of speech-language pathologists (SLPs) assessing and treating swallowing in skilled nursing facilities (SNFs). DESIGN Retrospective review of 120 medical records of patients recommended for a flexible endoscopic evaluation of swallowing (FEES). SETTING AND PARTICIPANTS 120 SNF patients. METHODS Records from 25 SNFs were reviewed to determine which patients were receiving swallowing therapy, their diet level pre- and post-FEES, and if they received prior imaging studies. Recordings of FEES were assigned severity ratings based on the Dynamic Imaging Grade of Swallowing Toxicity-FEES scores to determine the relationship between diet and liquid recommendations before and after FEES, how often patients consume a modified diet in the absence of dysphagia, percentage of patients without dysphagia receiving swallowing treatment, percentage of patients receiving alternative means of nutrition without dysphagia, and the percentage of patients with a feeding tube without an imaging assessment. RESULTS Chi-square tests revealed no agreement between pre- and postimaging diet levels. Ordinal regressions indicated preimaging diets did not fit the DIGEST severity rating model; however, investigators found a good fit with postimaging diet recommendations. Descriptive statistics indicated that 67% of the patients receiving a modified solid and/or liquid did not have dysphagia. Treatment was provided to 100% of the patients without dysphagia. Sixty-one percent of patients with feeding tubes had no dysphagia. Forty-five percent of NPO (nothing by mouth) patients had imaging during their acute stay. CONCLUSIONS AND IMPLICATIONS The results strongly suggest that the practice of continuing acute care diet recommendations in a SNF increases cost and may negatively impact patient quality of life. The practice may also lead to negative health consequences. A new imaging assessment is required to inform treatment when medical status changes.
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Affiliation(s)
- Ed M Bice
- IOPI Medical, LLC, Woodinville, WA, USA.
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218
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Lee P, Dhillon G, Pourafkari M, DaBreo D, Jaff Z, Appireddy R, Jin A, Boissé Lomax L, Durafourt BA, Boyd JG, Nasirzadeh AR, Tampieri D, Jalini S. Non-ECG-gated cardiac CT angiography in acute stroke is feasible and detects sources of embolism. Int J Stroke 2024; 19:189-198. [PMID: 37515467 PMCID: PMC10811964 DOI: 10.1177/17474930231193335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND A significant portion of cryptogenic stroke is hypothesized to be secondary to cardiac embolism. However, transthoracic echocardiogram is usually delayed after stroke, and more detailed cardiac imaging is not routinely done. AIMS This study aimed to determine whether non-ECG-gated cardiac CT angiography (cCTA) during hyperacute stroke would provide diagnostic quality images and act as an adjunct modality of cardiac imaging to detect sources of emboli. METHODS In this single-center prospective cohort study, modified Code Stroke imaging was implemented with a 64-slice CT scanner, where the longitudinal axis of CT angiography was extended from the carina to the diaphragm. The primary outcomes of image quality, recruitment feasibility, impact on hyperacute time metrics, and additional radiation dose were assessed. Secondary outcomes consisted of detection of high-risk cardiac sources of embolism, mediastinal or lung pathology, and impact on etiologic classification. RESULTS One hundred and twenty eligible patients were enrolled, of which 105 (87.5%) had good/moderate quality images for motion artifact and 119 (99.2%) for contrast opacification. Total CT time, door-to-needle time, and door-to-groin puncture time were unchanged with the addition of cCTA. Eighty-nine patients received a final diagnosis of ischemic stroke, of which 12/89 (13.5%) had high-risk cardioembolic findings on cCTA. Incidental findings, such as pulmonary embolism (PE) (7/89, 7.9%) and malignancy (6/89, 6.7%), were observed. cCTA led to changes in management for 19/120 (15.8%) of all patients, and reclassification of stroke etiology for 8/89 (9%) of patients. CONCLUSIONS Non-ECG-gated cCTA can be feasibly incorporated into Code Stroke and provide diagnostic quality images without delays in hyperacute time metrics. It can detect high-risk cardiac sources, and other findings impacting patient care. This may help reclassify a subset of cryptogenic stroke cases and improve secondary prevention.
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Affiliation(s)
- Peter Lee
- School of Medicine, Queen’s University, Kingston, ON, Canada
| | - Gurmohan Dhillon
- Department of Radiology, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Marina Pourafkari
- Department of Radiology, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Dominique DaBreo
- Department of Radiology, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Zardasht Jaff
- Division of Cardiology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Ramana Appireddy
- Division of Neurology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Albert Jin
- Division of Neurology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Lysa Boissé Lomax
- Division of Neurology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Bryce A Durafourt
- Division of Neurology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - John Gordon Boyd
- Division of Neurology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Amir Reza Nasirzadeh
- Department of Radiology, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Donatella Tampieri
- Department of Radiology, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
| | - Shirin Jalini
- Division of Neurology, Department of Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, ON, Canada
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219
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Hora BS, Varghese AS, Patil P, Anbalagan S, Chandarani S, Shaik N. The Role of Three-Dimensional Imaging (CBCT) in Enhancing Diagnostic Accuracy in Endodontics: A Randomized Controlled Trial. J Pharm Bioallied Sci 2024; 16:S871-S873. [PMID: 38595528 PMCID: PMC11001081 DOI: 10.4103/jpbs.jpbs_1066_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 04/11/2024] Open
Abstract
Background In the field of endodontics, accurate diagnosis is pivotal for successful treatment outcomes. This randomized controlled trial (RCT) explores the potential of cone-beam computed tomography (CBCT) as a tool to enhance diagnostic accuracy in endodontic procedures. Materials and Methods An RCT was conducted with a sample of 120 patients presenting with endodontic issues. The patients were divided into two groups: Group A received traditional two-dimensional radiography, while group B underwent CBCT scans. The diagnostic accuracy was assessed by comparing the radiographic findings with the clinical evaluation by experienced endodontists. Results The results indicated a significant improvement in diagnostic accuracy in the CBCT group (group B) with an arbitrary value of 88% accuracy, compared with the traditional radiography group (group A) with only 65% accuracy. The CBCT group showed a clearer visualization of root canal anatomy, periapical lesions, and the presence of additional canals, contributing to the enhanced diagnostic capability. Conclusion This RCT demonstrates that CBCT significantly enhances diagnostic accuracy in endodontics compared with traditional two-dimensional radiography. The improved visualization of root canal anatomy and periapical regions allows for more precise treatment planning, ultimately leading to better treatment outcomes.
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Affiliation(s)
- Baljeet Singh Hora
- Department of Conservative Dentistry and Endodontics, Rama Dental College, Kanpur, Uttar Pradesh, India
| | - Anil Samson Varghese
- Department of Conservative Dentistry and Endodontics, Pushpagiri College of Dental Sciences, Kerala, India
| | - Pranav Patil
- Department of Conservative Dentistry and Endodontics, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India
| | - Sakthivel Anbalagan
- Department of Dentistry, Associate Director of Validation (Cell and Gene Therapy), Lonza, USA
| | - Sagolsem Chandarani
- Department of Conservative Dentistry and Endodontics, Dental College, Regional Institute of Medical Sciences, Imphal, Manipur, India
| | - Naseemoon Shaik
- Department of Pedodontics and Preventive Dentistry, MNR Dental College and Hospital, Sangareddy, Telangana, India
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220
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Priessner M, Gaboriau DCA, Sheridan A, Lenn T, Garzon-Coral C, Dunn AR, Chubb JR, Tousley AM, Majzner RG, Manor U, Vilar R, Laine RF. Content-aware frame interpolation (CAFI): deep learning-based temporal super-resolution for fast bio imaging. Nat Methods 2024; 21:322-330. [PMID: 38238557 PMCID: PMC10864186 DOI: 10.1038/s41592-023-02138-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 11/17/2023] [Indexed: 02/15/2024]
Abstract
The development of high-resolution microscopes has made it possible to investigate cellular processes in 3D and over time. However, observing fast cellular dynamics remains challenging because of photobleaching and phototoxicity. Here we report the implementation of two content-aware frame interpolation (CAFI) deep learning networks, Zooming SlowMo and Depth-Aware Video Frame Interpolation, that are highly suited for accurately predicting images in between image pairs, therefore improving the temporal resolution of image series post-acquisition. We show that CAFI is capable of understanding the motion context of biological structures and can perform better than standard interpolation methods. We benchmark CAFI's performance on 12 different datasets, obtained from four different microscopy modalities, and demonstrate its capabilities for single-particle tracking and nuclear segmentation. CAFI potentially allows for reduced light exposure and phototoxicity on the sample for improved long-term live-cell imaging. The models and the training and testing data are available via the ZeroCostDL4Mic platform.
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Affiliation(s)
- Martin Priessner
- Department of Chemistry, Imperial College London, London, UK.
- Centre of Excellence in Neurotechnology, Imperial College London, London, UK.
| | - David C A Gaboriau
- Facility for Imaging by Light Microscopy, NHLI, Imperial College London, London, UK
| | - Arlo Sheridan
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Tchern Lenn
- CRUK City of London Centre, UCL Cancer Institute, London, UK
| | - Carlos Garzon-Coral
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
- Institute of Human Biology, Roche Pharma Research & Early Development, Roche Innovation Center Basel, Basel, Switzerland
| | - Alexander R Dunn
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | - Jonathan R Chubb
- Laboratory for Molecular Cell Biology, University College London, London, UK
| | - Aidan M Tousley
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Robbie G Majzner
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Uri Manor
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, La Jolla, CA, USA
- Department of Cell & Developmental Biology, University of California, San Diego, CA, USA
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, London, UK
| | - Romain F Laine
- Micrographia Bio, Translation and Innovation Hub, London, UK.
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221
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Parillo M, Bernetti C, Altomare C, Beomonte Zobel B, Quattrocchi CC. Extrahepatic abscess and dropped gallstones: a case report and a narrative review of an unusual delayed complication of laparoscopic cholecystectomy. Acta Chir Belg 2024; 124:57-61. [PMID: 36576306 DOI: 10.1080/00015458.2022.2163957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/27/2022] [Indexed: 01/04/2023]
Abstract
BACKGROUND Laparoscopic cholecystectomy is the most common minimally invasive abdominal surgery procedure performed in Western countries; it offers several advantages over laparotomy but still carries some risks, such as intraoperative spillage of bile and gallstones. Diagnosis of dropped gallstones could be challenging, it is frequently delayed, and this can lead to further complications such as abscesses formation. METHODS We report the history of a 51-year-old male with persistent dull abdominal pain in association to appetite loss, vomiting episodes and changes in regular bowel habits, a past medical history of laparoscopic cholecystectomy for biliary lithiasis (1.5 years earlier) and minimum elevation of inflammatory markers and gamma-GT values. RESULTS Ultrasound examination showed perihepatic stones and magnetic resonance imaging revealed the presence of multiple perihepatic abscesses, findings compatible with fibrotic-inflammatory phenomena from 'dropped gallstones'. A re-laparoscopy was then performed with an abscess collection containing multiple gallstones; a liver wedge resection was also required due to strong adhesions. At follow up, the patient had improved both on clinical and biochemical perspective. CONCLUSION Dropped gallstones are an underreported cause of morbidity and diagnostic dilemmas in subjects who underwent to laparoscopic cholecystectomy, in relation to infectious complications that can occur even several months or years after surgery. Imaging represents a valuable aid in the correct non-invasive diagnostic process, but proper awareness of this insidious condition is necessary. Surgeons and radiologists should always consider this eventuality in the differential diagnosis of a patient presenting with abdominal abscesses and history of cholecystectomy.
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Affiliation(s)
- Marco Parillo
- Unit of Diagnostic Imaging and Interventional Radiology, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy; Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Caterina Bernetti
- Unit of Diagnostic Imaging and Interventional Radiology, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy; Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Carlo Altomare
- Unit of Diagnostic Imaging and Interventional Radiology, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy; Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Bruno Beomonte Zobel
- Unit of Diagnostic Imaging and Interventional Radiology, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy; Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Carlo Cosimo Quattrocchi
- Unit of Diagnostic Imaging and Interventional Radiology, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy; Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
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222
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Vissink A, van Ginkel MS, Bootsma H, Glaudemans A, Delli K. At the cutting-edge: what's the latest in imaging to diagnose Sjögren's disease? Expert Rev Clin Immunol 2024; 20:135-139. [PMID: 37955152 DOI: 10.1080/1744666x.2023.2283588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/10/2023] [Indexed: 11/14/2023]
Affiliation(s)
- A Vissink
- Oral and Maxillofacial Surgeon, Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M S van Ginkel
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - H Bootsma
- Rheumatologist and immunologist, Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Awjm Glaudemans
- Nuclear medicine physician/specialist, Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - K Delli
- Oral Medicine Specialist, Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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Dudipala KR, Le TH, Nie W, Hoye RLZ. Halide Perovskites and Their Derivatives for Efficient, High-Resolution Direct Radiation Detection: Design Strategies and Applications. Adv Mater 2024; 36:e2304523. [PMID: 37726105 DOI: 10.1002/adma.202304523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 09/03/2023] [Indexed: 09/21/2023]
Abstract
The past decade has witnessed a rapid rise in the performance of optoelectronic devices based on lead-halide perovskites (LHPs). The large mobility-lifetime products and defect tolerance of these materials, essential for optoelectronics, also make them well-suited for radiation detectors, especially given the heavy elements present, which is essential for strong X-ray and γ-ray attenuation. Over the past decade, LHP thick films, wafers, and single crystals have given rise to direct radiation detectors that have outperformed incumbent technologies in terms of sensitivity (reported values up to 3.5 × 106 µC Gyair -1 cm-2 ), limit of detection (directly measured values down to 1.5 nGyair s-1 ), along with competitive energy and imaging resolution at room temperature. At the same time, lead-free perovskite-inspired materials (e.g., methylammonium bismuth iodide), which have underperformed in solar cells, have recently matched and, in some areas (e.g., in polarization stability), surpassed the performance of LHP detectors. These advances open up opportunities to achieve devices for safer medical imaging, as well as more effective non-invasive analysis for security, nuclear safety, or product inspection applications. Herein, the principles behind the rapid rises in performance of LHP and perovskite-inspired material detectors, and how their properties and performance link with critical applications in non-invasive diagnostics are discussed. The key strategies to engineer the performance of these materials, and the important challenges to overcome to commercialize these new technologies are also discussed.
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Affiliation(s)
| | - Thanh-Hai Le
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Wanyi Nie
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Robert L Z Hoye
- Inorganic Chemistry Laboratory, University of Oxford, Oxford, OX1 3QR, UK
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224
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Petre MA, Antoniadou C, Gherghe ME, Scheau C, Dragosloveanu S. Megaprosthesis for a Rare Case of Bone Metastasis of Thyroid Carcinoma: Case Management and Surgical Approach. Cureus 2024; 16:e53717. [PMID: 38455786 PMCID: PMC10919316 DOI: 10.7759/cureus.53717] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2024] [Indexed: 03/09/2024] Open
Abstract
We present the case of a 56-year-old male patient diagnosed with Hürthle cell carcinoma (HCC) that developed widespread metastasis in bone, lung, and lymph nodes with a larger tumor located in the right tibia. The patient was only disturbed by the pain, discomfort, and disability linked to the tibial metastasis. After careful consideration, the best course of action was considered to be the surgical excision of the proximal right tibia with arthroplasty using the C LINK Megaprosthesis tumor revision system. Histological and immunohistochemical analyses were conducted on the tibial resection specimen. In addition, a comprehensive review of prior histological specimens from the primary thyroid tumor, lymph nodes, and lung was undertaken to evaluate the prognosis and provide guidance for the postoperative management of the patient.
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Affiliation(s)
- Mihnea-Alexandru Petre
- Department of Orthopaedics, "Foisor" Clinical Hospital of Orthopaedics, Traumatology, and Osteoarticular TB, Bucharest, ROU
| | - Chrysoula Antoniadou
- Department of Pathology, "Foisor" Clinical Hospital of Orthopaedics, Traumatology, and Osteoarticular TB, Bucharest, ROU
| | - Mihai Emanuel Gherghe
- Department of Orthopaedics, "Foisor" Clinical Hospital of Orthopaedics, Traumatology, and Osteoarticular TB, Bucharest, ROU
| | - Cristian Scheau
- Department of Radiology and Medical Imaging, "Foisor" Clinical Hospital of Orthopaedics, Traumatology, and Osteoarticular TB, Bucharest, ROU
| | - Serban Dragosloveanu
- Department of Orthopaedics, "Foisor" Clinical Hospital of Orthopaedics, Traumatology, and Osteoarticular TB, Bucharest, ROU
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225
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Scaglione M, Masala S, Tamburrini S, Lassandro G, Barbuto L, Romano L, Iacobellis F, Sica G, Crivelli P, Turilli D, Sandomenico F, Granata V, Patlas MN. Abdominal Emergencies in Cancer Patients. Can Assoc Radiol J 2024; 75:161-170. [PMID: 37192390 DOI: 10.1177/08465371231175521] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023] Open
Abstract
Abdominal emergencies in cancer patients encompass a wide spectrum of oncologic conditions caused directly by malignancies, paraneoplastic syndromes, reactions to the chemotherapy or often represent the first clinical manifestation of an unknown malignancy. Not rarely, clinical symptoms are the tip of an iceberg. In this scenario, the radiologist is asked to exclude the cause responsible for the patient's symptoms, to suggest the best way to manage and to rule out the underlying malignancy. In this article, we discuss some of the most common abdominal oncological emergencies that may be encountered in an emergency department.
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Affiliation(s)
| | | | | | | | - Luigi Barbuto
- Department of General and Emergency Radiology, Naples, Italy
| | - Luigia Romano
- Department of General and Emergency Radiology, Naples, Italy
| | | | - Giacomo Sica
- Department of Radiology, Monaldi Hospital, Naples, Italy
| | | | | | - Fabio Sandomenico
- Radiology Unit, Buon Consiglio Fatebenefratelli Hospital, Naples, Italy
| | - Vincenza Granata
- Division of Radiology, Istituto Nazionale Tumori IRCCS Fondazione Pascale, Naples, Italy
| | - Michael N Patlas
- Department of Radiology, McMaster University, Hamilton, ON, Canada
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226
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Mahajan A, Shukla S, Vaish R, Mair MD. Editorial: Editor's challenge: Abhishek Mahajan - how can precision oncology be advanced with validated imaging-based nomograms? Front Oncol 2024; 14:1362187. [PMID: 38361785 PMCID: PMC10867313 DOI: 10.3389/fonc.2024.1362187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024] Open
Affiliation(s)
- Abhishek Mahajan
- Department of Imaging, The Clatterbridge Cancer Centre National Health Service (NHS) Foundation Trust, Liverpool, United Kingdom
- Faculty of Health and Life Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Shreya Shukla
- Department of Radio Diagnosis, Tata Memorial Hospital, Varanasi, India
| | - Richa Vaish
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Manish Devendra Mair
- Department of Maxillofacial Surgery, University Hospitals of Leicester National Health Service (NHS) Trust, Leicester, United Kingdom
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227
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Kurisu S, Fujiwara H. Assessing a Myocardial Area at Risk in Non-ST Elevation Acute Myocardial Infarction Without Wall Motion Abnormalities Using Cardiac Magnetic Resonance and Radionuclide Imaging. Cureus 2024; 16:e55125. [PMID: 38558713 PMCID: PMC10979518 DOI: 10.7759/cureus.55125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
Evaluation of a myocardial area at risk is clinically important because it contributes to clinical decision-making and management of patients with acute myocardial infarction (AMI). Herein, we reported a case of non-ST-elevation AMI (non-STEMI) without wall motion abnormalities on echocardiography, in which the myocardial area at risk was evaluated by two modalities; cardiac magnetic resonance (CMR) and radionuclide imaging. Coronary angiography revealed significant luminal stenosis in the diagonal branch and the obtuse marginal branch. It remained unclear which branch was the culprit. T2-weighted CMR revealed myocardial edema in the left ventricular anterolateral area. Based on the extent of myocardial edema, the patient was diagnosed with non-STEMI in the area corresponding to the diagonal branch. The area exhibiting impaired fatty acid metabolism on iodine-123-beta-methyl-p-iodophenyl penta-decanoic acid (123I-BMIPP) imaging matched well with the area showing myocardial edema on T2-weighted CMR. In conclusion, both CMR and BMIPP imaging are powerful tools in identifying a myocardial area at risk even in non-STEMI without wall motion abnormalities. This should contribute to clinical decision-making and management of patients with AMI.
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Affiliation(s)
- Satoshi Kurisu
- Department of Cardiology, Hiroshima-Nishi Medical Center, Otake, JPN
| | - Hitoshi Fujiwara
- Department of Cardiology, Hiroshima-Nishi Medical Center, Otake, JPN
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228
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Froehlich M, Guggenberger KV, Vogt M, Mihatsch PW, Torre GD, Werner RA, Gernert M, Strunz PP, Portegys J, Weng AM, Schmalzing M, Bley TA. MRVAS Score-introducing a standardized magnetic resonance scoring system for assessing the extent of inflammatory burden in giant cell arteritis. Rheumatology (Oxford) 2024:keae056. [PMID: 38305463 DOI: 10.1093/rheumatology/keae056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/14/2023] [Accepted: 01/04/2024] [Indexed: 02/03/2024] Open
Abstract
OBJECTIVES Our aim was to introduce a standardized system for assessing the extent of giant cell arteritis (GCA) on MRI, titled MRVAS (MR Vasculitis Activity score). To obtain a comprehensive view, we used an extensive MRI protocol including cranial vessels and the aorta with its branches. To test reliability, MRI was assessed by 4 readers with different levels of experience. METHODS 80 patients with suspected GCA underwent MRI of cranial arteries and the aorta/branches (20 vessel segments). Every vessel was rated dichotomous [inflamed (coded as 1) or not 0], providing a summed score from 0 to 20. Blinded readers (two experienced radiologists [ExR], two inexperienced radiologists [InR]) applied the MRVAS on an individual vessel and an overall level (defined as the highest score of any of the individual vessel scores). To determine interrater agreement, Cohen's kappa was calculated for pairwise comparison of each reader for individual vessel segments. Intraclass correlation coefficients (ICC) were used for the MRVAS score. RESULTS Concordance rates were excellent for both sub-cohorts on an individual vessel-based (GCA, ICC, 0.95; and non-GCA, ICC, 0.96) and Overall MRVAS score level (GCA, ICC, 0.96; and non-GCA, ICC, 1.0). Interrater agreement yielded significant concordance (p< 0.001) for all pairs (kappa range 0.78-0.98). No significant differences between ERs and IRs were observed (p= 0.38). CONCLUSION The proposed MRVAS score allows standardized scoring of inflammation in GCA and achieved high agreement rates in a prospective setting.
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Affiliation(s)
- Matthias Froehlich
- Department of Internal Medicine II, Rheumatology/Clinical Immunology, University Hospital Würzburg, Würzburg, Germany
- Matthias Froehlich and Konstanze V. Guggenberger contributed equally to this work
| | - Konstanze V Guggenberger
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
- Matthias Froehlich and Konstanze V. Guggenberger contributed equally to this work
| | - Marius Vogt
- Department of Diagnostic and Interventional Neuroradiology, University Hospital Würzburg, Würzburg, Germany
| | - Patrick W Mihatsch
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
| | - Giulia Dalla Torre
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
| | - Rudolf A Werner
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Michael Gernert
- Department of Internal Medicine II, Rheumatology/Clinical Immunology, University Hospital Würzburg, Würzburg, Germany
| | - Patrick P Strunz
- Department of Internal Medicine II, Rheumatology/Clinical Immunology, University Hospital Würzburg, Würzburg, Germany
| | - Jan Portegys
- Department of Internal Medicine II, Rheumatology/Clinical Immunology, University Hospital Würzburg, Würzburg, Germany
| | - Andreas M Weng
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
| | - Marc Schmalzing
- Department of Internal Medicine II, Rheumatology/Clinical Immunology, University Hospital Würzburg, Würzburg, Germany
| | - Thorsten A Bley
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
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229
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Kocer SY, Hull NC, Dean Potter D, Madigan T, Boland JM, Demirel N. Late development of pneumatoceles in necrotizing pneumonia. Pediatr Pulmonol 2024; 59:502-505. [PMID: 38014600 DOI: 10.1002/ppul.26777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/09/2023] [Accepted: 11/18/2023] [Indexed: 11/29/2023]
Affiliation(s)
- Sila Y Kocer
- Ondokuz Mayis University School of Medicine, Samsun, Turkey
| | - Nathan C Hull
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Donald Dean Potter
- Department of Surgery, Division of Pediatric Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Theresa Madigan
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Infectious Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Jennifer M Boland
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Nadir Demirel
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Pulmonology, Mayo Clinic, Rochester, Minnesota, USA
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230
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Cui Q, Li C, Huang T, Huang J, Chen M. Systematic analysis of perivascular epithelioid cell neoplasms in the female reproductive tract: a comprehensive review. Future Oncol 2024; 20:283-295. [PMID: 38426361 DOI: 10.2217/fon-2023-0778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
Perivascular epithelioid cell neoplasms (PEComas) are rare mesenchymal lesions, with gynecological PEComas accounting for just over a quarter of cases. Limited reports exist on gynecological PEComa, primarily treated with surgery; adjuvant therapy is considered in high-risk cases. This systematic review aims to summarize the origin and clinical, pathological and molecular characteristics of uterine PEComa, focusing on treatment options for gynecological PEComa. A comprehensive PubMed review of gynecological PEComa reports was conducted. A detailed examination of the literature ensured a thorough understanding. Gynecological PEComa diagnosis relies on histology and immunology. Despite therapy controversies, surgery remains the mainstay. Adjuvant therapy efficacy in high-risk cases is uncertain. mTOR inhibitors are the first line; alternative treatments, including angiogenesis and aromatase inhibitors, should be considered.
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Affiliation(s)
- Qiulin Cui
- Department of Gynecology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cheng Li
- Department of Gynecology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tongyi Huang
- Department of Clinical Medical Ultrasonics, Division of Interventional Ultrasound, Institute of Diagnostic & Interventional Ultrasound, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jiaming Huang
- Department of Gynecology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ming Chen
- Department of Gynecology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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231
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Selvanayagam JB, Pasupathy S. Challenging the Benign Perception: Unveiling the Prognostic Potential of CMR in MINOCA Patients. JACC Cardiovasc Imaging 2024; 17:162-164. [PMID: 37632502 DOI: 10.1016/j.jcmg.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 06/20/2023] [Indexed: 08/28/2023]
Affiliation(s)
- Joseph B Selvanayagam
- College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia; Flinders Medical Centre, Adelaide, South Australia, Australia; South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.
| | - Sivabaskari Pasupathy
- Faculty of Health Sciences, The University of Adelaide, Adelaide, South Australia, Australia
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232
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Kellner RL, Harris A, Ciulla L, Guidoboni G, Verticchio Vercellin A, Oddone F, Carnevale C, Zaid M, Antman G, Kuvin JT, Siesky B. The Eye as the Window to the Heart: Optical Coherence Tomography Angiography Biomarkers as Indicators of Cardiovascular Disease. J Clin Med 2024; 13:829. [PMID: 38337522 PMCID: PMC10856197 DOI: 10.3390/jcm13030829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/26/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
Alterations in microvasculature represent some of the earliest pathological processes across a wide variety of human diseases. In many organs, however, inaccessibility and difficulty in directly imaging tissues prevent the assessment of microvascular changes, thereby significantly limiting their translation into improved patient care. The eye provides a unique solution by allowing for the non-invasive and direct visualization and quantification of many aspects of the human microvasculature, including biomarkers for structure, function, hemodynamics, and metabolism. Optical coherence tomography angiography (OCTA) studies have specifically identified reduced capillary densities at the level of the retina in several eye diseases including glaucoma. This narrative review examines the published data related to OCTA-assessed microvasculature biomarkers and major systemic cardiovascular disease. While loss of capillaries is being established in various ocular disease, pilot data suggest that changes in the retinal microvasculature, especially within the macula, may also reflect small vessel damage occurring in other organs resulting from cardiovascular disease. Current evidence suggests retinal microvascular biomarkers as potential indicators of major systemic cardiovascular diseases, including systemic arterial hypertension, atherosclerotic disease, and congestive heart failure.
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Affiliation(s)
- Rebecca L. Kellner
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.L.K.); (A.H.); (A.V.V.); (G.A.)
| | - Alon Harris
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.L.K.); (A.H.); (A.V.V.); (G.A.)
| | - Lauren Ciulla
- Department of Ophthalmology and Visual Science, The University of Chicago, Chicago, IL 60637, USA;
| | - Giovanna Guidoboni
- Maine College of Engineering and Computing, University of Maine, Orono, ME 04469, USA;
| | - Alice Verticchio Vercellin
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.L.K.); (A.H.); (A.V.V.); (G.A.)
| | - Francesco Oddone
- Glaucoma Unit, IRCCS—Fondazione Bietti, 00198 Rome, Italy; (F.O.); (C.C.)
| | - Carmela Carnevale
- Glaucoma Unit, IRCCS—Fondazione Bietti, 00198 Rome, Italy; (F.O.); (C.C.)
| | - Mohamed Zaid
- Graduate School of Biomedical Science and Engineering, University of Maine, Orono, ME 04469, USA;
| | - Gal Antman
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.L.K.); (A.H.); (A.V.V.); (G.A.)
- Department of Ophthalmology, Rabin Medical Center, Petah Tikva 4941492, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Jeffrey T. Kuvin
- Zucker School of Medicine at Hofstra/Northwell Health, Manhasset, NY 11549, USA;
| | - Brent Siesky
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.L.K.); (A.H.); (A.V.V.); (G.A.)
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233
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Schubert PJ, Saxena R, Kornfeld J. DeepFocus: fast focus and astigmatism correction for electron microscopy. Nat Commun 2024; 15:948. [PMID: 38296974 PMCID: PMC10830472 DOI: 10.1038/s41467-024-45042-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 01/10/2024] [Indexed: 02/02/2024] Open
Abstract
High-throughput 2D and 3D scanning electron microscopy, which relies on automation and dependable control algorithms, requires high image quality with minimal human intervention. Classical focus and astigmatism correction algorithms attempt to explicitly model image formation and subsequently aberration correction. Such models often require parameter adjustments by experts when deployed to new microscopes, challenging samples, or imaging conditions to prevent unstable convergence, making them hard to use in practice or unreliable. Here, we introduce DeepFocus, a purely data-driven method for aberration correction in scanning electron microscopy. DeepFocus works under very low signal-to-noise ratio conditions, reduces processing times by more than an order of magnitude compared to the state-of-the-art method, rapidly converges within a large aberration range, and is easily recalibrated to different microscopes or challenging samples.
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Affiliation(s)
- P J Schubert
- Max Planck Institute for Biological Intelligence, Martinsried, 82152, Germany
| | - R Saxena
- Max Planck Institute for Biological Intelligence, Martinsried, 82152, Germany
| | - J Kornfeld
- Max Planck Institute for Biological Intelligence, Martinsried, 82152, Germany.
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234
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Pham J, Ng FC. Novel advanced imaging techniques for cerebral oedema. Front Neurol 2024; 15:1321424. [PMID: 38356883 PMCID: PMC10865379 DOI: 10.3389/fneur.2024.1321424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 01/09/2024] [Indexed: 02/16/2024] Open
Abstract
Cerebral oedema following acute ischemic infarction has been correlated with poor functional outcomes and is the driving mechanism of malignant infarction. Measurements of midline shift and qualitative assessment for herniation are currently the main CT indicators for cerebral oedema but have limited sensitivity for small cortical infarcts and are typically a delayed sign. In contrast, diffusion-weighted (DWI) or T2-weighted magnetic resonance imaging (MRI) are highly sensitive but are significantly less accessible. Due to the need for early quantification of cerebral oedema, several novel imaging biomarkers have been proposed. Based on neuroanatomical shift secondary to space-occupying oedema, measures such as relative hemispheric volume and cerebrospinal fluid displacement are correlated with poor outcomes. In contrast, other imaging biometrics, such as net water uptake, T2 relaxometry and blood brain barrier permeability, reflect intrinsic tissue changes from the influx of fluid into the ischemic region. This review aims to discuss quantification of cerebral oedema using current and developing advanced imaging techniques, and their role in predicting clinical outcomes.
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Affiliation(s)
- Jenny Pham
- Department of Radiology, Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Felix C. Ng
- Department of Neurology, Royal Melbourne Hospital, Parkville, VIC, Australia
- Department of Neurology, Austin Health, Heidelberg, VIC, Australia
- Department of Medicine at Royal Melbourne Hospital, Melbourne Brain Centre, University of Melbourne, Parkville, VIC, Australia
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235
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Bailey GL, Wells AU, Desai SR. Imaging of Pulmonary Sarcoidosis-A Review. J Clin Med 2024; 13:822. [PMID: 38337517 PMCID: PMC10856519 DOI: 10.3390/jcm13030822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/26/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
Sarcoidosis is the classic multisystem granulomatous disease. First reported as a disorder of the skin, it is now clear that, in the overwhelming majority of patients with sarcoidosis, the lungs will bear the brunt of the disease. This review explores some of the key concepts in the imaging of pulmonary sarcoidosis: the wide array of typical (and some of the less common) findings on high-resolution computed tomography (HRCT) are reviewed and, with this, the concept of morphologic/HRCT phenotypes is discussed. The pathophysiologic insights provided by HRCT through studies where morphologic abnormalities and pulmonary function tests are compared are evaluated. Finally, this review outlines the important contribution of HRCT to disease monitoring and prognostication.
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Affiliation(s)
- Georgina L. Bailey
- Department of Radiology, Royal Brompton Hospital, London SW3 6NP, UK (S.R.D.)
| | - Athol U. Wells
- The Interstitial Lung Disease Unit, Royal Brompton Hospital, London SW3 6NP, UK
- The National Heart & Lung Institute, Imperial College London, London W12 7RQ, UK
- The Margaret Turner-Warwick Centre for Fibrosing Lung Diseases, Imperial College London, London W12 7RQ, UK
| | - Sujal R. Desai
- Department of Radiology, Royal Brompton Hospital, London SW3 6NP, UK (S.R.D.)
- The National Heart & Lung Institute, Imperial College London, London W12 7RQ, UK
- The Margaret Turner-Warwick Centre for Fibrosing Lung Diseases, Imperial College London, London W12 7RQ, UK
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236
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Chan PP, Shen R, Cheung CY, Ling A, Yu M, Pang CP, Tham CC. Longitudinal change of peripapillary vessel density and retinal nerve fibre layer thickness in normal tension and primary angle closure glaucoma. Br J Ophthalmol 2024; 108:195-202. [PMID: 36564146 DOI: 10.1136/bjo-2022-322336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/02/2022] [Indexed: 12/25/2022]
Abstract
PURPOSE To compare the rates of peripapillary vessel density (pVD) loss and retinal nerve fibre layer (RNFL) thinning in normal tension glaucoma (NTG) and primary angle closure glaucoma (PACG). METHODS Baseline age and severity-matched NTG and PACG eyes (75 eyes of 60 patients for each subtype) were observed longitudinally. All participants' RNFL thickness were measured by optical coherence tomography (OCT); pVD were measured by swept-source OCT-angiography (OCT-A) and quantified by a customised MATLAB program. The rate of pVD loss and RNFL thinning were estimated by linear mixed-effects models. RESULTS NTG eyes had significant pVD loss in all sectors (p≤0.05) while PACG eyes' pVD loss was borderline significant in the global region (p=0.05). Significant RNFL thinning was detected in the inferotemporal and superonasal regions of both groups, and the superotemporal region in the NTG group (all p≤0.02). NTG had faster rate of pVD loss in the global (difference (95% CI) -1.08 (-1.90 to -0.27) %/year), temporal (-1.57 (-2.91 to -0.23) %/year) and superotemporal (-1.46 (-2.65 to -0.26) %/year) regions than PACG (all p≤0.02), without significant difference of the rate of RNFL thinning. A lower baseline mean deviation (MD) was associated with a faster rate of global pVD loss, while a lower baseline pVD was associated with a slower rate of global pVD loss in multivariable analyses (both p≤0.04). CONCLUSIONS NTG had more extensive and faster rate of pVD loss than PACG. Baseline global pVD and MD were independently associated with the rate of pVD loss in NTG.
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Affiliation(s)
- Poemen PuiMan Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Hong Kong Eye Hospital, Hong Kong, People's Republic of China
- Lam Kin Chung. Jet King-Shing Ho Glaucoma Treatment and Research Centre, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong, People's Republic of China
| | - Ruyue Shen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Carol Y Cheung
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Anni Ling
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Marco Yu
- Singapore National Eye Centre, Singapore Eye Research Institute, Singapore
- Academic Clinical Program, Duke-NUS Medical School, National University of Singapore, Singapore
| | - Chi-Pui Pang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Lam Kin Chung. Jet King-Shing Ho Glaucoma Treatment and Research Centre, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Hong Kong Hub of Pediatric Excellence, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Joint Shantou International Eye Centre of Shantou University and Chinese University of Hong Kong, Shantou, People's Republic of China
| | - Clement C Tham
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Hong Kong Eye Hospital, Hong Kong, People's Republic of China
- Lam Kin Chung. Jet King-Shing Ho Glaucoma Treatment and Research Centre, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
- Department of Ophthalmology and Visual Sciences, The Prince of Wales Hospital, Hong Kong, People's Republic of China
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Braeu FA, Chuangsuwanich T, Tun TA, Perera S, Husain R, Thiery AH, Aung T, Barbastathis G, Girard MJA. AI-based clinical assessment of optic nerve head robustness superseding biomechanical testing. Br J Ophthalmol 2024; 108:223-231. [PMID: 36627175 DOI: 10.1136/bjo-2022-322374] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/22/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND/AIMS To use artificial intelligence (AI) to: (1) exploit biomechanical knowledge of the optic nerve head (ONH) from a relatively large population; (2) assess ONH robustness (ie, sensitivity of the ONH to changes in intraocular pressure (IOP)) from a single optical coherence tomography (OCT) volume scan of the ONH without the need for biomechanical testing and (3) identify what critical three-dimensional (3D) structural features dictate ONH robustness. METHODS 316 subjects had their ONHs imaged with OCT before and after acute IOP elevation through ophthalmo-dynamometry. IOP-induced lamina cribrosa (LC) deformations were then mapped in 3D and used to classify ONHs. Those with an average effective LC strain superior to 4% were considered fragile, while those with a strain inferior to 4% robust. Learning from these data, we compared three AI algorithms to predict ONH robustness strictly from a baseline (undeformed) OCT volume: (1) a random forest classifier; (2) an autoencoder and (3) a dynamic graph convolutional neural network (DGCNN). The latter algorithm also allowed us to identify what critical 3D structural features make a given ONH robust. RESULTS All three methods were able to predict ONH robustness from a single OCT volume scan alone and without the need to perform biomechanical testing. The DGCNN (area under the curve (AUC): 0.76±0.08) outperformed the autoencoder (AUC: 0.72±0.09) and the random forest classifier (AUC: 0.69±0.05). Interestingly, to assess ONH robustness, the DGCNN mainly used information from the scleral canal and the LC insertion sites. CONCLUSIONS We propose an AI-driven approach that can assess the robustness of a given ONH solely from a single OCT volume scan of the ONH, and without the need to perform biomechanical testing. Longitudinal studies should establish whether ONH robustness could help us identify fast visual field loss progressors. PRECIS Using geometric deep learning, we can assess optic nerve head robustness (ie, sensitivity to a change in IOP) from a standard OCT scan that might help to identify fast visual field loss progressors.
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Affiliation(s)
- Fabian A Braeu
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore-MIT Alliance for Research and Technology, Singapore
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore
| | - Thanadet Chuangsuwanich
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore
| | - Tin A Tun
- Singapore Eye Research Institute, Singapore
- Singapore National Eye Centre, Singapore
| | - Shamira Perera
- Singapore Eye Research Institute, Singapore
- Singapore National Eye Centre, Singapore
| | - Rahat Husain
- Singapore Eye Research Institute, Singapore
- Singapore National Eye Centre, Singapore
| | - Alexandre H Thiery
- Statistics and Applied Probability, National University of Singapore, Singapore
| | - Tin Aung
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore Eye Research Institute, Singapore
- Singapore National Eye Centre, Singapore
- Duke-NUS Graduate Medical School, Singapore
| | - George Barbastathis
- Singapore-MIT Alliance for Research and Technology, Singapore
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Michaël J A Girard
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore
- Duke-NUS Graduate Medical School, Singapore
- Institute for Molecular and Clinical Ophthalmology, Basel, Switzerland
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238
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Rimola J, Colombel JF, Bressler B, Adsul S, Siegelman J, Cole PE, Lindner D, Danese S. Magnetic Resonance Enterography Assessment of Transmural Healing with Vedolizumab in Moderate to Severe Crohn's Disease: Feasibility in the VERSIFY Phase 3 Clinical Trial. Clin Exp Gastroenterol 2024; 17:9-23. [PMID: 38298861 PMCID: PMC10829592 DOI: 10.2147/ceg.s429039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 01/14/2024] [Indexed: 02/02/2024] Open
Abstract
Purpose The VERSIFY phase 3 trial in patients with Crohn's disease (CD) treated with vedolizumab was the first to include a substudy that used a standardized magnetic resonance enterography (MRE) protocol to assess features of transmural inflammation (bowel edema and wall thickness) and extramural disease activity (enlarged lymph nodes). Patients and Methods Patients received intravenous vedolizumab (300 mg) at weeks 0 (baseline), 2, and 6, and then every 8 weeks for 26 or 52 weeks. Post hoc analyses included a subpopulation with a Magnetic Resonance Index of Activity score of ≥7 in at least one bowel segment at baseline and at least one postbaseline MRE assessment. Changes in transmural inflammation, including intramural bowel edema and wall thickness, were evaluated. Patient-level and segment-level analyses were performed. Results MRE images were evaluated in 27 patients with 83 evaluable bowel segments at baseline and week 26, and 13 patients with 38 evaluable segments at baseline, week 26, and week 52. At baseline, all patients had bowel wall edema and wall thickness of >3 mm in at least one bowel segment. The proportion of patients with edema decreased at weeks 26 (17/27 [63.0%]) and 52 (4/13 [30.8%]) and the proportion with bowel wall thickness of >3 mm decreased at weeks 26 (25/27 [92.6%]) and 52 (10/13 [76.9%]). Conclusion In patients with CD treated with vedolizumab for 26 and 52 weeks, the number of patients, and bowel segments, with MRE-detected transmural inflammation was reduced. These results highlight the impact of vedolizumab on components of transmural inflammation in CD and demonstrate that using MRE in CD multicenter clinical trials is feasible. Trial Registration ClinicalTrials.gov NCT02425111, April 23, 2015, http://www.clinicaltrials.gov NCT02425111; EU Clinical Trials Register EudraCT 2014-003509-13, https://www.clinicaltrialsregister.eu.
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Affiliation(s)
- Jordi Rimola
- IBD Unit, Radiology Department, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Jean-Frédéric Colombel
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Brian Bressler
- Division of Gastroenterology, University of British Columbia, Vancouver, BC, Canada
| | - Shashi Adsul
- Takeda Pharmaceuticals International, Zurich, Switzerland
| | | | | | - Dirk Lindner
- Takeda Pharmaceuticals International, Zurich, Switzerland
| | - Silvio Danese
- Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele and University Vita-Salute San Raffaele, Milan, Italy
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Jaiswal S, Wang F, Wu X, Chang TS, Shirazi A, Lee M, Dame MK, Spence JR, Wang TD. Near-Infrared In Vivo Imaging of Claudin-1 Expression by Orthotopically Implanted Patient-Derived Colonic Adenoma Organoids. Diagnostics (Basel) 2024; 14:273. [PMID: 38337789 PMCID: PMC10854921 DOI: 10.3390/diagnostics14030273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/15/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND Claudin-1 becomes overexpressed during the transformation of normal colonic mucosa to colorectal cancer (CRC). METHODS Patient-derived organoids expressed clinically relevant target levels and genetic heterogeneity, and were established from human adenoma and normal colons. Colonoids were implanted orthotopically in the colon of immunocompromised mice. This pre-clinical model of CRC provides an intact microenvironment and representative vasculature. Colonoid growth was monitored using white light endoscopy. A peptide specific for claudin-1 was fluorescently labeled for intravenous administration. NIR fluorescence images were collected using endoscopy and endomicroscopy. RESULTS NIR fluorescence images collected using wide-field endoscopy showed a significantly greater target-to-background (T/B) ratio for adenoma versus normal (1.89 ± 0.35 and 1.26 ± 0.06) colonoids at 1 h post-injection. These results were confirmed by optical sections collected using endomicroscopy. Optical sections were collected in vivo with sub-cellular resolution in vertical and horizontal planes. Greater claudin-1 expression by individual epithelial cells in adenomatous versus normal crypts was visualized. A human-specific cytokeratin stain ex vivo verified the presence of human tissues implanted adjacent to normal mouse colonic mucosa. CONCLUSIONS Increased claudin-1 expression was observed from adenoma versus normal colonoids in vivo using imaging with wide field endoscopy and endomicrosopy.
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Affiliation(s)
- Sangeeta Jaiswal
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Fa Wang
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Xiaoli Wu
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Tse-Shao Chang
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ahmad Shirazi
- Division of Integrative System and Design, University of Michigan, Ann Arbor, MI 48109, USA
| | - Miki Lee
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Michael K Dame
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jason R Spence
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Thomas D Wang
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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240
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Watabe T, Yamahira S, Takakura K, Thumkeo D, Narumiya S, Matsuda M, Terai K. Calcium transients trigger switch-like discharge of prostaglandin E 2 in an extracellular signal-regulated kinase-dependent manner. eLife 2024; 12:RP86727. [PMID: 38276879 PMCID: PMC10945702 DOI: 10.7554/elife.86727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024] Open
Abstract
Prostaglandin E2 (PGE2) is a key player in a plethora of physiological and pathological events. Nevertheless, little is known about the dynamics of PGE2 secretion from a single cell and its effect on the neighboring cells. Here, by observing confluent Madin-Darby canine kidney (MDCK) epithelial cells expressing fluorescent biosensors, we demonstrate that calcium transients in a single cell cause PGE2-mediated radial spread of PKA activation (RSPA) in neighboring cells. By in vivo imaging, RSPA was also observed in the basal layer of the mouse epidermis. Experiments with an optogenetic tool revealed a switch-like PGE2 discharge in response to the increasing cytoplasmic Ca2+ concentrations. The cell density of MDCK cells correlated with the frequencies of calcium transients and the following RSPA. The extracellular signal-regulated kinase (ERK) activation also enhanced the frequency of RSPA in MDCK and in vivo. Thus, the PGE2 discharge is regulated temporally by calcium transients and ERK activity.
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Affiliation(s)
- Tetsuya Watabe
- Research Center for Dynamic Living Systems, Graduate School of Biostudies, Kyoto UniversityKyotoJapan
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto UniversityKyotoJapan
| | - Shinya Yamahira
- Research Center for Dynamic Living Systems, Graduate School of Biostudies, Kyoto UniversityKyotoJapan
| | - Kanako Takakura
- Research Center for Dynamic Living Systems, Graduate School of Biostudies, Kyoto UniversityKyotoJapan
| | - Dean Thumkeo
- Department of Drug Discovery Medicine, Graduate School of Medicine, Kyoto UniversityKyotoJapan
| | - Shuh Narumiya
- Department of Drug Discovery Medicine, Graduate School of Medicine, Kyoto UniversityKyotoJapan
| | - Michiyuki Matsuda
- Research Center for Dynamic Living Systems, Graduate School of Biostudies, Kyoto UniversityKyotoJapan
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto UniversityKyotoJapan
- Institute for Integrated Cell-Material Sciences, Kyoto UniversityKyotoJapan
| | - Kenta Terai
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto UniversityKyotoJapan
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241
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Moradi Y, Lee JSH, Armani AM. Detecting Disruption of HER2 Membrane Protein Organization in Cell Membranes with Nanoscale Precision. ACS Sens 2024; 9:52-61. [PMID: 37955934 PMCID: PMC10825864 DOI: 10.1021/acssensors.3c01437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
The spatiotemporal organization of proteins within the cell membrane can affect numerous biological functions, including cell signaling, communication, and transportation. Deviations from normal spatial arrangements have been observed in various diseases, and a better understanding of this process is a key stepping stone to advancing development of clinical interventions. However, given the nanometer length scales involved, detecting these subtle changes has primarily relied on complex super-resolution and single-molecule imaging methods. In this work, we demonstrate an alternative fluorescent imaging strategy for detecting protein organization based on a material that exhibits a unique photophysical behavior known as aggregation-induced emission (AIE). Organic AIE molecules have an increase in emission signal when they are in close proximity, and the molecular motion is restricted. This property simultaneously addresses the high background noise and low detection signal that limit conventional widefield fluorescent imaging. To demonstrate the potential of this approach, the fluorescent molecule sensor is conjugated to a human epidermal growth factor receptor 2 (HER2)-specific antibody and used to investigate the spatiotemporal behavior of HER2 clustering in the membrane of HER2-overexpressing breast cancer cells. Notably, the disruption of HER2 clusters in response to an FDA-approved monoclonal antibody therapeutic (Trastuzumab) is successfully detected using a simple widefield fluorescent microscope. While the sensor demonstrated here is optimized for sensing HER2 clustering, it is an easily adaptable platform. Moreover, given the compatibility with widefield imaging, the system has the potential to be used with high-throughput imaging techniques, accelerating investigations into membrane protein spatiotemporal organization.
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Affiliation(s)
- Yasaman Moradi
- Mork
Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
- Ellison
Institute of Technology, Los Angeles, California 90064, United States
| | - Jerry S. H. Lee
- Mork
Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
- Ellison
Institute of Technology, Los Angeles, California 90064, United States
- Keck
School of Medicine, University of Southern
California, Los Angeles, California 90089, United States
| | - Andrea M. Armani
- Mork
Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
- Ellison
Institute of Technology, Los Angeles, California 90064, United States
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Martinez GA, Frutos EL, Ricci Lara MA, Vargas CP, Rodriguez Kowalczuk MV, Ferraresso MG, Rubin L, Cancio AH, Otero CM, Otero P, Luna D, Mazzuoccolo LD, Benitez SE. Integrating Dermoscopic Images into PACS Using DICOM and Modality Worklist. Stud Health Technol Inform 2024; 310:199-203. [PMID: 38269793 DOI: 10.3233/shti230955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Dermatology is one of the medical fields outside the radiology service that uses image acquisition and analysis in its daily medical practice, mostly through digital dermoscopy imaging modality. The acquisition, transfer, and storage of dermatology images has become an important issue to resolve. We aimed to describe our experience in integrating dermoscopic images into PACS using DICOM as a guide for the health informatics and dermatology community. During 2022 we integrated the video dermoscopy equipment through a strategic plan with an 8-step procedure. We used the DICOM standard with Modality Worklist and Storage commitment. Three systems were involved (video dermoscopy software, the EHR, and PACS). We identified critical steps and faced many challenges, such as the lack of a final model of DICOM standard for dermatology images.
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Affiliation(s)
| | | | - María Agustina Ricci Lara
- Departamento de Informática en Salud, Hospital Italiano de Buenos Aires, Argentina
- Universidad Tecnológica Nacional, Ciudad Autónoma de Buenos Aires, Argentina
| | | | | | | | - Luciana Rubin
- Departamento de Informática en Salud, Hospital Italiano de Buenos Aires, Argentina
| | | | - Carlos Martín Otero
- Departamento de Informática en Salud, Hospital Italiano de Buenos Aires, Argentina
| | - Paula Otero
- Departamento de Informática en Salud, Hospital Italiano de Buenos Aires, Argentina
- Instituto Universitario del Hospital Italiano de Buenos Aires, Argentina
| | - Daniel Luna
- Departamento de Informática en Salud, Hospital Italiano de Buenos Aires, Argentina
- Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), UE de triple dependencia CONICET - Instituto Universitario del Hospital Italiano (IUHI)
- Instituto Universitario del Hospital Italiano de Buenos Aires, Argentina
| | | | - Sonia Elizabeth Benitez
- Departamento de Informática en Salud, Hospital Italiano de Buenos Aires, Argentina
- Instituto Universitario del Hospital Italiano de Buenos Aires, Argentina
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de la Torre BG, Albericio F. The Pharmaceutical Industry in 2023: An Analysis of FDA Drug Approvals from the Perspective of Molecules. Molecules 2024; 29:585. [PMID: 38338330 PMCID: PMC10856271 DOI: 10.3390/molecules29030585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
With the COVID-19 pandemic behind us, the U.S. Food and Drug Administration (FDA) has approved 55 new drugs in 2023, a figure consistent with the number authorized in the last five years (53 per year on average). Thus, 2023 marks the second-best yearly FDA harvest after 2018 (59 approvals) in all the series. Monoclonal antibodies (mAbs) continue to be the class of drugs with the most approvals, with an exceptional 12, a number that makes it the most outstanding year for this class. As in 2022, five proteins/enzymes have been approved in 2023. However, no antibody-drug conjugates (ADCs) have been released onto the market. With respect to TIDES (peptides and oligonucleotides), 2023 has proved a spectacular year, with a total of nine approvals, corresponding to five peptides and four oligonucleotides. Natural products continue to be the best source of inspiration for drug development, with 10 new products on the market. Three drugs in this year's harvest are pegylated, which may indicate the return of pegylation as a method to increase the half-lives of drugs after the withdrawal of peginesatide from the market in 2013. Following the trends in recent years, two bispecific drugs have been authorized in 2023. As in the preceding years, fluorine and/or N-aromatic heterocycles are present in most of the drugs. Herein, the 55 new drugs approved by the FDA in 2023 are analyzed exclusively on the basis of their chemical structure. They are classified as the following: biologics (antibodies, proteins/enzymes); TIDES (peptide and oligonucleotides); combined drugs; pegylated drugs; natural products; nitrogen aromatic heterocycles; fluorine-containing molecules; and other small molecules.
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Affiliation(s)
- Beatriz G. de la Torre
- Kwazulu-Natal Research Innovation and Sequencing Platform (KRISP), College of Health Sciences, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Fernando Albericio
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa
- Department of Organic Chemistry, University of Barcelona, 08028 Barcelona, Spain
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Saglietto A, Bertello E, Barra M, Ferraro I, Rovera C, Orzan F, De Ferrari GM, Anselmino M. MRI pattern characterization of cerebral cardioembolic lesions following atrial fibrillation ablation. Front Cardiovasc Med 2024; 11:1327567. [PMID: 38327489 PMCID: PMC10847299 DOI: 10.3389/fcvm.2024.1327567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/09/2024] [Indexed: 02/09/2024] Open
Abstract
Background Recognizing etiology is essential for treatment and secondary prevention of cerebral ischemic events. A magnetic resonance imaging (MRI) pattern suggestive of an embolic etiology has been described but, to date, there are no uniformly accepted criteria. Aim The purpose of the study is to describe MRI features of ischemic cerebral lesions occurring after transcatheter ablation of atrial fibrillation (AF). Methods A systematic review and meta-analysis of studies performing brain imaging investigations before and after AF transcatheter ablation was performed. The incidence of cerebral ischemic lesions after AF transcatheter ablation was the primary endpoint. The co-primary endpoints were the prevalence of the different neuroimaging features regarding the embolic cerebral ischemic lesions. Results A total of 25 studies, encompassing 3,304 patients, were included in the final analysis. The incidence of ischemic cerebral lesions following AF transcatheter ablation was 17.2% [95% confidence interval (CI) 12.2%-23.8%], of which a minimal fraction was symptomatic [0.60% (95% CI 0.09%-3.9%)]. Only 1.6% of the lesions (95% CI 0.9%-3.0%) had a diameter >10 mm, and in 20.5% of the cases the lesions were multiple (95% CI 17.1%-24.4%). Brain lesions were equally distributed across the two hemispheres and the different lobes; cortical location was more frequent [64.0% (95% CI 42.9%-80.8%)] while the middle cerebral artery territory was the most involved 37.0% (95% CI 27.3-48.0). Conclusions The prevailing MRI pattern comprises a predominance of small (<10 mm) cortical lesions, more prevalent in the territory of the middle cerebral artery.
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Affiliation(s)
- Andrea Saglietto
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Eleonora Bertello
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Marina Barra
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Ilenia Ferraro
- Division of Cardiology, Santa Croce e Carle Hospital, Cuneo, Italy
| | - Chiara Rovera
- Department of Cardiology, Civic Hospital of Chivasso, Chivasso, Italy
| | - Fulvio Orzan
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Gaetano Maria De Ferrari
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Matteo Anselmino
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
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Crosetti E, Succo G, Sapino S, Bertotto I, Cirillo S, Petracchini M, Fondello G, Arrigoni G, Tascone M, Piazza C, Farina D, Ravanelli M. Twenty questions from the surgeon to the radiologist to better plan an open partial horizontal laryngectomy. Front Oncol 2024; 13:1305889. [PMID: 38328437 PMCID: PMC10847842 DOI: 10.3389/fonc.2023.1305889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/18/2023] [Indexed: 02/09/2024] Open
Abstract
Open partial horizontal laryngectomies (OPHLs) represent a valuable therapeutic option for tumors of the intermediate T-category and, in selected cases, for locally advanced tumors with low-volume extra-laryngeal extension. The eligibility of patients treated with this type of surgery has increased with the introduction of the modular approach to OPHL planning. This strategy follows the introduction of the classification proposed by the European Laryngological Society, based on the extent of horizontal resection. Optimization of the selection is the result of a meticulous work-up process involving close cooperation between experienced surgeons and radiologists, followed by final quality control by pathologists. Computed tomography and magnetic resonance imaging are study methods whose pearls and pitfalls are well known, especially when performed at a high level of expertise. In this paper, based on the experience of two high-volume centers, a checklist of 20 questions addressed by the surgeon to the radiologist before planning an OPHL was proposed. Considerations regarding case selection are reported for each of the questioned parameters. A very simple question-and-answer process is easy to understand and mainly addressed by less experienced colleagues who wish to increase their knowledge and skills in performing this type of surgery.
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Affiliation(s)
- Erika Crosetti
- Head and Neck Cancer Unit, San Giovanni Bosco Hospital, Turin, Italy
| | - Giovanni Succo
- Oncology Department, University of Turin, Head and Neck Cancer Unit, San Giovanni Bosco Hospital, Turin, Italy
| | - Silvia Sapino
- Head and Neck Cancer Unit, San Giovanni Bosco Hospital, Turin, Italy
| | - Ilaria Bertotto
- Radiology Service, Candiolo Cancer Institute, Candiolo, Italy
| | - Stefano Cirillo
- Radiology Service, Mauriziano Umberto I Hospital, Turin, Italy
| | | | | | - Giulia Arrigoni
- Head and Neck Cancer Unit, San Giovanni Bosco Hospital, Turin, Italy
| | - Martina Tascone
- Head and Neck Cancer Unit, San Giovanni Bosco Hospital, Turin, Italy
| | - Cesare Piazza
- Department of Otorhinolaryngology—Head and Neck Surgery, ASST Spedali Civili di Brescia, University of Brescia, School of Medicine, Brescia, Italy
| | - Davide Farina
- Department of Radiology, University of Brescia, Brescia, Italy
| | - Marco Ravanelli
- Department of Radiology, University of Brescia, Brescia, Italy
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246
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Seitz P, Cullmann J, Bucher S, Bütikofer L, Reichenbach S, Lötscher F, Amsler J, Christ L, Bonel HM, Villiger PM, Seitz L. Musculoskeletal magnetic resonance imaging findings support a common spectrum of giant cell arteritis and polymyalgia rheumatica. Rheumatology (Oxford) 2024:keae043. [PMID: 38265241 DOI: 10.1093/rheumatology/keae043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/03/2023] [Accepted: 12/02/2023] [Indexed: 01/25/2024] Open
Abstract
OBJECTIVES To investigate the proportion and distribution of contrast enhancement (CE) of musculoskeletal structures with MRI of the thorax/abdomen/pelvis in giant cell arteritis (GCA). METHODS CE at 34 musculoskeletal sites was rated with a 4-point ordinal scale. Patients were divided into groups with/without glucocorticoid (GC) treatment and with/without symptoms of polymyalgia rheumatica (PMR). Two composite scores were created: an MRI-score, including seven sites and a Limited-MRI-score, including four sites. RESULTS Retrospectively, 90 consecutive patients with GCA were included. The population included 54 and 36 patients with and without PMR symptoms, respectively, and 45 (50%) patients were receiving GCs at the time of MRI. CE was found in 90.7% of lumbar spines, 87.5% of the pelvis, 82.2% of shoulder girdles and in 95.6% at any site in patients without GCs. The proportion of patients without and with GCs with at least moderate enhancement was 91.1%/75.6% at ≥ 1-3, 75.6%/51.1% at ≥ 4-6 and 64.4%/28.9% at ≥ 7-9 sites. The mean difference between the proportion of pathological CE in patients with and without GCs was 27.4% for synovial sites and 18.3% for periarticular/musculotendinous sites. Both composite scores captured substantial differences between groups, correlation was very strong between scores. CONCLUSIONS MRI shows CE of musculoskeletal structures typical of PMR in most patients with GCA, supporting the concept of "GCA-PMR Spectrum Disease". Changes are more frequent at periarticular/musculotendinous sites and in the presence of PMR symptoms. A clear response to GCs is evident, less so for periarticular/musculotendinous sites.
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Affiliation(s)
- Pascal Seitz
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | | | - Susana Bucher
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | | | - Stephan Reichenbach
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
- Institute for Social and Preventive Medicine, University of Bern, Bern
| | - Fabian Lötscher
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Jennifer Amsler
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Lisa Christ
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Harald M Bonel
- Campusradiologie, Lindenhofgruppe, Bern, Switzerland
- Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Peter M Villiger
- Medical Center Monbijou, Rheumatology and Immunology, Bern, Switzerland
| | - Luca Seitz
- Department of Rheumatology and Immunology, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
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247
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Mudumbi KC, Burns EA, Schodt DJ, Petrova ZO, Kiyatkin A, Kim LW, Mangiacapre EM, Ortiz-Caraveo I, Rivera Ortiz H, Hu C, Ashtekar KD, Lidke KA, Lidke DS, Lemmon MA. Distinct interactions stabilize EGFR dimers and higher-order oligomers in cell membranes. Cell Rep 2024; 43:113603. [PMID: 38117650 PMCID: PMC10835193 DOI: 10.1016/j.celrep.2023.113603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/23/2023] [Accepted: 12/05/2023] [Indexed: 12/22/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is a receptor tyrosine kinase with important roles in many cellular processes as well as in cancer and other diseases. EGF binding promotes EGFR dimerization and autophosphorylation through interactions that are well understood structurally. How these dimers relate to higher-order EGFR oligomers seen in cell membranes, however, remains unclear. Here, we used single-particle tracking (SPT) and Förster resonance energy transfer imaging to examine how each domain of EGFR contributes to receptor oligomerization and the rate of receptor diffusion in the cell membrane. Although the extracellular region of EGFR is sufficient to drive receptor dimerization, we find that the EGF-induced EGFR slowdown seen by SPT requires higher-order oligomerization-mediated in part by the intracellular tyrosine kinase domain when it adopts an active conformation. Our data thus provide important insight into the interactions required for higher-order EGFR assemblies involved in EGF signaling.
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Affiliation(s)
- Krishna C Mudumbi
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA.
| | - Eric A Burns
- Department of Pathology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - David J Schodt
- Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA; Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87106, USA
| | - Zaritza O Petrova
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Anatoly Kiyatkin
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Lucy W Kim
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Emma M Mangiacapre
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Irais Ortiz-Caraveo
- Department of Pathology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - Hector Rivera Ortiz
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Chun Hu
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Kumar D Ashtekar
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA
| | - Keith A Lidke
- Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA; Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87106, USA
| | - Diane S Lidke
- Department of Pathology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
| | - Mark A Lemmon
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cancer Biology Institute, Yale University West Campus, West Haven, CT 06516, USA.
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248
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Shen Y, Howard L, Yu XY. Secondary Ion Mass Spectral Imaging of Metals and Alloys. Materials (Basel) 2024; 17:528. [PMID: 38276468 PMCID: PMC10820874 DOI: 10.3390/ma17020528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 01/27/2024]
Abstract
Secondary Ion Mass Spectrometry (SIMS) is an outstanding technique for Mass Spectral Imaging (MSI) due to its notable advantages, including high sensitivity, selectivity, and high dynamic range. As a result, SIMS has been employed across many domains of science. In this review, we provide an in-depth overview of the fundamental principles underlying SIMS, followed by an account of the recent development of SIMS instruments. The review encompasses various applications of specific SIMS instruments, notably static SIMS with time-of-flight SIMS (ToF-SIMS) as a widely used platform and dynamic SIMS with Nano SIMS and large geometry SIMS as successful instruments. We particularly focus on SIMS utility in microanalysis and imaging of metals and alloys as materials of interest. Additionally, we discuss the challenges in big SIMS data analysis and give examples of machine leaning (ML) and Artificial Intelligence (AI) for effective MSI data analysis. Finally, we recommend the outlook of SIMS development. It is anticipated that in situ and operando SIMS has the potential to significantly enhance the investigation of metals and alloys by enabling real-time examinations of material surfaces and interfaces during dynamic transformations.
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Affiliation(s)
- Yanjie Shen
- College of Biology and Oceanography, Weifang University, 5147 Dongfeng East Street, Weifang 261061, China
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | - Logan Howard
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
- The Bredesen Center, 310 Ferris Hall, 1508 Middle Drive, Knoxville, TN 37996, USA
| | - Xiao-Ying Yu
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
- The Bredesen Center, 310 Ferris Hall, 1508 Middle Drive, Knoxville, TN 37996, USA
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249
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Korom M, Valadez EA, Tottenham N, Dozier M, Spielberg JM. Preliminary examination of the effects of an early parenting intervention on amygdala-orbitofrontal cortex resting-state functional connectivity among high-risk children: A randomized clinical trial. Dev Psychopathol 2024:1-9. [PMID: 38247369 DOI: 10.1017/s0954579423001669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
We examined the long-term causal effects of an evidence-based parenting program delivered in infancy on children's emotion regulation and resting-state functional connectivity (rs-fc) during middle childhood. Families were referred to the study by Child Protective Services (CPS) as part of a diversion from a foster care program. A low-risk group of families was also recruited. CPS-involved families were randomly assigned to receive the target (Attachment and Biobehavioral Catch-up, ABC) or a control intervention (Developmental Education for Families, DEF) before infants turned 2. Both interventions were home-based, manualized, and 10-sessions long. During middle childhood, children underwent a 6-min resting-state functional MRI scan. Amygdala seed-based rs-fc analysis was completed with intervention group as the group-level predictor of interest. Fifty-seven children (NABC = 21; NDEF = 17; NCOMP = 19; Mage = 10.02 years, range = 8.08-12.14) were scanned successfully. The DEF group evidenced negative left amygdala↔OFC connectivity, whereas connectivity was near zero in the ABC and comparison groups (ABCvsDEF: Cohen's d = 1.17). ABC may enhance high-risk children's regulatory neurobiology outcomes ∼8 years after the intervention was completed.
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Affiliation(s)
- Marta Korom
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, USA
| | - Emilio A Valadez
- Department of Human Development and Quantitative Methodology, University of Maryland, College Park, MD, USA
| | - Nim Tottenham
- Department of Psychology, Columbia University, New York, NY, USA
| | - Mary Dozier
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, USA
| | - Jeffrey M Spielberg
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, USA
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250
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Mady OY, Dewedar O, Abdine N, Zaytoon H, Haggag Y. Bioadhesive behaviors of HPMC E5: comparative analysis of various techniques, histological and human radiological evidence. Sci Rep 2024; 14:1840. [PMID: 38246953 PMCID: PMC10800332 DOI: 10.1038/s41598-024-52144-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 01/14/2024] [Indexed: 01/23/2024] Open
Abstract
Enhancing drug residence duration within the stomach offers distinct advantages for both localized and systemic effects. Numerous strategies have been proposed to extend drug residence time, with mucoadhesive polymers being a notable avenue. In this context, hydroxypropyl methylcellulose E5 has been employed as both a binding agent for granulating contrast metal powder and a mucoadhesive polymer, spanning various concentrations. The in vitro bioadhesion strength of the formulated tablets was gauged against the stomach lining of rabbits, for the quantification of bioadhesive forces. The temporal aspect of bioadhesion was evaluated through two approaches: one centered on gastric fluid dynamics and another proffered by the researchers, focusing on gastric wall kinetics. The results divulged a decline in bioadhesion force concomitant with high polymer concentrations. Histological examination of stained stomach sections revealed mucosal perturbations within the rabbit stomach. These disruptions exhibited an escalating trend in conjunction with elevated polymer concentrations, culminating in extensive disturbance at a 7.5% polymer concentration. The outcomes unveiled a direct relationship between polymer concentration increments and extended contact time. Subsequent radiological tracking of contrast metal behavior within a mature human stomach indicated a residence time of 6 h due to the entrapment of displaced components at disparate locations.
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Affiliation(s)
- Omar Y Mady
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Omar Dewedar
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| | - Noorelhoda Abdine
- Department of Histology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Hossam Zaytoon
- Department of Radiology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Yusuf Haggag
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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