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West HW, Dangas K, Antoniades C. Advances in Clinical Imaging of Vascular Inflammation: A State-of-the-Art Review. JACC Basic Transl Sci 2024; 9:710-732. [PMID: 38984055 PMCID: PMC11228120 DOI: 10.1016/j.jacbts.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/12/2023] [Accepted: 10/12/2023] [Indexed: 07/11/2024]
Abstract
Vascular inflammation is a major contributor to cardiovascular disease, particularly atherosclerotic disease, and early detection of vascular inflammation may be key to the ultimate reduction of residual cardiovascular morbidity and mortality. This review paper discusses the progress toward the clinical utility of noninvasive imaging techniques for assessing vascular inflammation, with a focus on coronary atherosclerosis. A discussion of multiple modalities is included: computed tomography (CT) imaging (the major focus of the review), cardiac magnetic resonance, ultrasound, and positron emission tomography imaging. The review covers recent progress in new technologies such as the novel CT biomarkers of coronary inflammation (eg, the perivascular fat attenuation index), new inflammation-specific tracers for positron emission tomography-CT imaging, and others. The strengths and limitations of each modality are explored, highlighting the potential for multi-modality imaging and the use of artificial intelligence image interpretation to improve both diagnostic and prognostic potential for common conditions such as coronary artery disease.
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Affiliation(s)
- Henry W West
- Acute Multidisciplinary Imaging and Interventional Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Central Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Katerina Dangas
- Acute Multidisciplinary Imaging and Interventional Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Charalambos Antoniades
- Acute Multidisciplinary Imaging and Interventional Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
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2
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González MI, González-Arjona M, Cussó L, Morcillo MÁ, Aguilera-Correa JJ, Esteban J, Kestler M, Calle D, Cerón C, Cortes-Canteli M, Muñoz P, Bouza E, Desco M, Salinas B. In Vivo Detection of Staphylococcus aureus Infections Using Radiolabeled Antibodies Specific for Bacterial Toxins. Int J Biomed Imaging 2024; 2024:3655327. [PMID: 38665417 PMCID: PMC11045290 DOI: 10.1155/2024/3655327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/02/2024] [Accepted: 01/13/2024] [Indexed: 04/28/2024] Open
Abstract
Purpose The Gram-positive Staphylococcus aureus bacterium is one of the leading causes of infection in humans. The lack of specific noninvasive techniques for diagnosis of staphylococcal infection together with the severity of its associated complications support the need for new specific and selective diagnostic tools. This work presents the successful synthesis of an immunotracer that targets the α-toxin released by S. aureus. Methods [89Zr]Zr-DFO-ToxAb was synthesized based on radiolabeling an anti-α-toxin antibody with zirconium-89. The physicochemical characterization of the immunotracer was performed by high-performance liquid chromatography (HPLC), radio-thin layer chromatography (radio-TLC), and electrophoretic analysis. Its diagnostic ability was evaluated in vivo by positron emission tomography/computed tomography (PET/CT) imaging in an animal model of local infection-inflammation (active S. aureus vs. heat-killed S. aureus) and infective osteoarthritis. Results Chemical characterization of the tracer established the high radiochemical yield and purity of the tracer while maintaining antibody integrity. In vivo PET/CT image confirmed the ability of the tracer to detect active foci of S. aureus. Those results were supported by ex vivo biodistribution studies, autoradiography, and histology, which confirmed the ability of [89Zr]Zr-DFO-ToxAb to detect staphylococcal infectious foci, avoiding false-positives derived from inflammatory processes. Conclusions We have developed an immuno-PET tracer capable of detecting S. aureus infections based on a radiolabeled antibody specific for the staphylococcal alpha toxins. The in vivo assessment of [89Zr]Zr-DFO-ToxAb confirmed its ability to selectively detect staphylococcal infectious foci, allowing us to discern between infectious and inflammatory processes.
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Affiliation(s)
- María Isabel González
- Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Unidad de Imagen Avanzada, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
| | - Mario González-Arjona
- Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
| | - Lorena Cussó
- Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Unidad de Imagen Avanzada, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
- CIBER de Salud Mental, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Miguel Ángel Morcillo
- Unidad de Aplicaciones Médicas de las Radiaciones Ionizantes, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain
| | - John Jairo Aguilera-Correa
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Servicio de Microbiología Clínica Instituto de Investigación Sanitaria Fundación Jiménez Díaz, UAM, 28040 Madrid, Spain
- CIBERINFEC-CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Jaime Esteban
- Servicio de Microbiología Clínica Instituto de Investigación Sanitaria Fundación Jiménez Díaz, UAM, 28040 Madrid, Spain
- CIBERINFEC-CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Martha Kestler
- Servicio de Microbiología y Enfermedades Infecciosas, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
| | - Daniel Calle
- Unidad de Imagen Avanzada, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
| | - Carlos Cerón
- Cardiovascular Risk Factors and Brain Function Programme, Centro Nacional de Investigaciones Cardiovasculares (CNIC) Carlos III, 28029 Madrid, Spain
| | - Marta Cortes-Canteli
- Cardiovascular Risk Factors and Brain Function Programme, Centro Nacional de Investigaciones Cardiovasculares (CNIC) Carlos III, 28029 Madrid, Spain
- Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), 28040 Madrid, Spain
| | - Patricia Muñoz
- CIBER de Salud Mental, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Servicio de Microbiología y Enfermedades Infecciosas, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Emilio Bouza
- CIBER de Salud Mental, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Servicio de Microbiología y Enfermedades Infecciosas, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Manuel Desco
- Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Unidad de Imagen Avanzada, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
- CIBER de Salud Mental, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Departamento de Bioingeniería, Universidad Carlos III de Madrid, 28911 Madrid, Spain
| | - Beatriz Salinas
- Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Unidad de Imagen Avanzada, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
- CIBER de Salud Mental, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Departamento de Bioingeniería, Universidad Carlos III de Madrid, 28911 Madrid, Spain
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Proaño-Bernal L, Gilabert-García A, Sharma-Sharma S, Mora-Barrera CM, Singer-De-la-Garza J, Beristain-de-la-Rosa PY, Basile-Alvarez MR, Guerra EC, Bermudez-Gonzalez JL, Luna-Alcala S, Espinola-Zavaleta N, Alexanderson-Rosas E. Positron emission tomography and its role in the assessment of vulnerable plaques in comparison to other imaging modalities. Front Med (Lausanne) 2024; 10:1293848. [PMID: 38425695 PMCID: PMC10902136 DOI: 10.3389/fmed.2023.1293848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/04/2023] [Indexed: 03/02/2024] Open
Abstract
The diagnosis and management of vulnerable plaques are topics of high interest in the cardiovascular field. Although imaging techniques like computed tomography angiography (MCTA) and ultrasonography (USG) can structurally evaluate atherosclerotic plaques, they are limited in examining internal cellular processes. Positron emission tomography (PET) molecular imaging, on the other hand, can highlight these cellular processes, including inflammation, angiogenesis, and lipid oxidation. Magnetic resonance imaging (MRI) is also a valuable non-invasive imaging technique that can provide detailed anatomical and functional information on the cardiovascular system. In this review, we compare the advantages and drawbacks of MCTA, USG and MRI imaging techniques with PET molecular imaging in evaluating vulnerable plaques. PET imaging allows physicians to measure different pathophysiological events within the plaque using intravenous radiotracers, of which 18F-fluorodeoxyglucose (18F-FDG) is the most validated one. By using 18F-FDG, physicians can understand the formation of the plaque, assess the accumulation of macrophages, and predict major cardiovascular events. However, some limitations exist in using 18F-FDG, including myocardial uptake and low sensitivity in imaging coronary arteries. We also mention other radiotracers that can help in evaluating vulnerable plaques, including 18F-NaF. Although PET imaging is still challenging, it has shown promise in evaluating vulnerable plaques and could be used to intervene in high-risk patients before major cardiovascular events occur.
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Affiliation(s)
- Leonardo Proaño-Bernal
- Department of Nuclear Cardiology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico
- Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Ana Gilabert-García
- Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | | | | | | | | | | | - Enrique C. Guerra
- Department of Nuclear Cardiology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico
- Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Jorge Luis Bermudez-Gonzalez
- Department of Internal Medicine, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Mexico City, Mexico
| | - Santiago Luna-Alcala
- Department of Nuclear Cardiology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico
| | - Nilda Espinola-Zavaleta
- Department of Nuclear Cardiology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico
| | - Erick Alexanderson-Rosas
- Department of Nuclear Cardiology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico
- Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
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4
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Wang M, Zhang J, Ma J, Liu L, Wang J, Zhang C. Imaging findings and clinical relevance of 68Ga-Pentixafor PET in atherosclerosis: a systematic review. BMC Med Imaging 2023; 23:166. [PMID: 37884885 PMCID: PMC10601147 DOI: 10.1186/s12880-023-01134-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 10/20/2023] [Indexed: 10/28/2023] Open
Abstract
OBJECTIVE We aimed to perform a qualitative synthesis of evidence on the role of 68Ga-Pentixafor PET in atherosclerosis. METHODS A systematic search of the PubMed and Embase databases for studies reporting the evaluation of atherosclerotic lesions by 68Ga-Pentixafor PET was performed with a search time frame from database creation to 2022-12-26. The diagnostic test evaluation tool QUADAS-2 was used to evaluate the quality of the included literature and to perform descriptive analyses of relevant outcome indicators. RESULTS A total of 6 studies with 280 patients were included. One study reported only imaging outcome metrics, while the other five studies reported imaging outcome metrics and clinical correlation metrics. For imaging outcomes, three studies reported imaging results for 68Ga-Pentixafor PET only, and the other three studies reported imaging results for comparative analysis of 68Ga-Pentixafor PET with 18F-FDG PET. For clinical correlation, three studies reported the correlation between tracer uptake and cardiovascular risk factors, one study reported the correlation between tracer uptake and plaque calcification, and one study reported the correlation between all three: tracer uptake, cardiovascular risk factors, and plaque calcification. CONCLUSION 68Ga-Pentixafor PET has a good imaging effect on atherosclerotic lesions, and it is a promising imaging modality that may replace 18F-FDG PET for atherosclerosis imaging in the future. In patients with atherosclerosis, there is a clear clinical correlation between cardiovascular risk factors, tracer uptake, and plaque calcification.
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Affiliation(s)
- Min Wang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan, PR China
| | - Jiayu Zhang
- Department of General Surgery (Breast Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Jiao Ma
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan, PR China
| | - Liyi Liu
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan, PR China
| | - Jia Wang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan, PR China
| | - Chunyin Zhang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China.
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China.
- Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan, PR China.
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5
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Antonova LV, Sevostianova VV, Silnikov VN, Krivkina EO, Velikanova EA, Mironov AV, Shabaev AR, Senokosova EA, Khanova MY, Glushkova TV, Akentieva TN, Sinitskaya AV, Markova VE, Shishkova DK, Lobov AA, Repkin EA, Stepanov AD, Kutikhin AG, Barbarash LS. Comparison of the Patency and Regenerative Potential of Biodegradable Vascular Prostheses of Different Polymer Compositions in an Ovine Model. Int J Mol Sci 2023; 24:ijms24108540. [PMID: 37239889 DOI: 10.3390/ijms24108540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
The lack of suitable autologous grafts and the impossibility of using synthetic prostheses for small artery reconstruction make it necessary to develop alternative efficient vascular grafts. In this study, we fabricated an electrospun biodegradable poly(ε-caprolactone) (PCL) prosthesis and poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/poly(ε-caprolactone) (PHBV/PCL) prosthesis loaded with iloprost (a prostacyclin analog) as an antithrombotic drug and cationic amphiphile with antibacterial activity. The prostheses were characterized in terms of their drug release, mechanical properties, and hemocompatibility. We then compared the long-term patency and remodeling features of PCL and PHBV/PCL prostheses in a sheep carotid artery interposition model. The research findings verified that the drug coating of both types of prostheses improved their hemocompatibility and tensile strength. The 6-month primary patency of the PCL/Ilo/A prostheses was 50%, while all PHBV/PCL/Ilo/A implants were occluded at the same time point. The PCL/Ilo/A prostheses were completely endothelialized, in contrast to the PHBV/PCL/Ilo/A conduits, which had no endothelial cells on the inner layer. The polymeric material of both prostheses degraded and was replaced with neotissue containing smooth-muscle cells; macrophages; proteins of the extracellular matrix such as type I, III, and IV collagens; and vasa vasorum. Thus, the biodegradable PCL/Ilo/A prostheses demonstrate better regenerative potential than PHBV/PCL-based implants and are more suitable for clinical use.
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Affiliation(s)
- Larisa V Antonova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Viktoriia V Sevostianova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Vladimir N Silnikov
- Laboratory of Organic Synthesis, Institute of Chemical Biology and Fundamental Medicine of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Evgeniya O Krivkina
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Elena A Velikanova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Andrey V Mironov
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Amin R Shabaev
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Evgenia A Senokosova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Mariam Yu Khanova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Tatiana V Glushkova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Tatiana N Akentieva
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Anna V Sinitskaya
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Victoria E Markova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Daria K Shishkova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Arseniy A Lobov
- Department of Regenerative Biomedicine, Research Institute of Cytology, 4 Tikhoretskiy Prospekt, St. Petersburg 194064, Russia
| | - Egor A Repkin
- Centre for Molecular and Cell Technologies, St. Petersburg State University, Universitetskaya Embankment, 7/9, St. Petersburg 199034, Russia
| | - Alexander D Stepanov
- Institute of Medicine, Kemerovo State University, 6 Krasnaya Street, Kemerovo 650000, Russia
| | - Anton G Kutikhin
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
| | - Leonid S Barbarash
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Boulevard, Kemerovo 650002, Russia
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6
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Bartlett B, Lee S, Ludewick HP, Siew T, Verma S, Waterer G, Corrales-Medina VF, Dwivedi G. A multiple comorbidities mouse lung infection model in ApoE‑deficient mice. Biomed Rep 2023; 18:21. [PMID: 36846615 PMCID: PMC9944256 DOI: 10.3892/br.2023.1603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/09/2022] [Indexed: 02/09/2023] Open
Abstract
Acute pneumonia is characterised by a period of intense inflammation. Inflammation is now considered to be a key step in atherosclerosis progression. In addition, pre-existing atherosclerotic inflammation is considered to play a role in pneumonia progression and risk. In the present study, a multiple comorbidities murine model was used to study respiratory and systemic inflammation that results from pneumonia in the setting of atherosclerosis. Firstly, a minimal infectious dose of Streptococcus pneumoniae (TIGR4 strain) to produce clinical pneumonia with a low mortality rate (20%) was established. C57Bl/6 ApoE -/- mice were fed a high-fat diet prior to administering intranasally 105 colony forming units of TIGR4 or phosphate-buffered saline (PBS). At days 2, 7 and 28 post inoculation (PI), the lungs of mice were imaged by magnetic resonance imaging (MRI) and positron emission tomography (PET). Mice were euthanised and investigated for changes in lung morphology and changes in systemic inflammation using ELISA, Luminex assay and real-time PCR. TIGR4-inoculated mice presented with varying degrees of lung infiltrate, pleural effusion and consolidation on MRI at all time points up to 28 days PI. Moreover, PET scans identified significantly higher FDG uptake in the lungs of TIGR4-inoculated mice up to 28 days PI. The majority (90%) TIGR4-inoculated mice developed pneumococcal-specific IgG antibody response at 28 days PI. Consistent with these observations, TIGR4-inoculated mice displayed significantly increased inflammatory gene expression [interleukin (IL)-1β and IL-6] in the lungs and significantly increased levels of circulating inflammatory protein (CCL3) at 7 and 28 days PI respectively. The mouse model developed by the authors presents a discovery tool to understand the link between inflammation related to acute infection such as pneumonia and increased risk of cardiovascular disease observed in humans.
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Affiliation(s)
- Benjamin Bartlett
- Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia 6150, Australia.,School of Medicine, The University of Western Australia, Perth, Western Australia 6009, Australia
| | - Silvia Lee
- Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia 6150, Australia.,Department of Microbiology, Pathwest Laboratory Medicine, Perth, Western Australia 6000, Australia
| | - Herbert P Ludewick
- Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia 6150, Australia.,Heart and Lung Research Institute, Harry Perkins Institute of Medical Research, Perth, Western Australia 6150, Australia
| | - Teck Siew
- Department of Nuclear Medicine, Fiona Stanley Hospital, Perth, Western Australia 6150, Australia.,Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Shipra Verma
- Department of Nuclear Medicine, Fiona Stanley Hospital, Perth, Western Australia 6150, Australia.,Department of Geriatric Medicine, Fiona Stanley Hospital, Perth, Western Australia 6150, Australia
| | - Grant Waterer
- School of Medicine, The University of Western Australia, Perth, Western Australia 6009, Australia.,Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Vicente F Corrales-Medina
- Department of Medicine, University of Ottawa, Ottawa, ON K1N 6N5, Canada.,Clinical Epidemiology Program, The Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | - Girish Dwivedi
- Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia 6150, Australia.,School of Medicine, The University of Western Australia, Perth, Western Australia 6009, Australia.,Department of Cardiology, Fiona Stanley Hospital, Perth, Western Australia 6150, Australia
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7
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Recent Advances in Cardiovascular Diseases Research Using Animal Models and PET Radioisotope Tracers. Int J Mol Sci 2022; 24:ijms24010353. [PMID: 36613797 PMCID: PMC9820417 DOI: 10.3390/ijms24010353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Cardiovascular diseases (CVD) is a collective term describing a range of conditions that affect the heart and blood vessels. Due to the varied nature of the disorders, distinguishing between their causes and monitoring their progress is crucial for finding an effective treatment. Molecular imaging enables non-invasive visualisation and quantification of biological pathways, even at the molecular and subcellular levels, what is essential for understanding the causes and development of CVD. Positron emission tomography imaging is so far recognized as the best method for in vivo studies of the CVD related phenomena. The imaging is based on the use of radioisotope-labelled markers, which have been successfully used in both pre-clinical research and clinical studies. Current research on CVD with the use of such radioconjugates constantly increases our knowledge and understanding of the causes, and brings us closer to effective monitoring and treatment. This review outlines recent advances in the use of the so-far available radioisotope markers in the research on cardiovascular diseases in rodent models, points out the problems and provides a perspective for future applications of PET imaging in CVD studies.
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8
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Acute Coronary Syndrome: Unravelling the Biology to Identify New Therapies. Cells 2022; 11:cells11244136. [PMID: 36552899 PMCID: PMC9776788 DOI: 10.3390/cells11244136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Acute coronary syndrome (ACS) encompasses a spectrum of presentations including unstable angina, non-ST elevation myocardial infarction (NSTEMI) and ST-elevation myocardial infarction (STEMI) [...].
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9
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Kondakov A, Berdalin A, Beregov M, Lelyuk V. Emerging Nuclear Medicine Imaging of Atherosclerotic Plaque Formation. J Imaging 2022; 8:jimaging8100261. [PMID: 36286355 PMCID: PMC9605050 DOI: 10.3390/jimaging8100261] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/01/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
Atherosclerosis is a chronic widespread cardiovascular disease and a major predisposing factor for cardiovascular events, among which there are myocardial infarction and ischemic stroke. Atherosclerotic plaque formation is a process that involves different mechanisms, of which inflammation is the most common. Plenty of radiopharmaceuticals were developed to elucidate the process of plaque formation at different stages, some of which were highly specific for atherosclerotic plaque. This review summarizes the current nuclear medicine imaging landscape of preclinical and small-scale clinical studies of these specific RPs, which are not as widespread as labeled FDG, sodium fluoride, and choline. These include oxidation-specific epitope imaging, macrophage, and other cell receptors visualization, neoangiogenesis, and macrophage death imaging. It is shown that specific radiopharmaceuticals have strength in pathophysiologically sound imaging of the atherosclerotic plaques at different stages, but this also may induce problems with the signal registration for low-volume plaques in the vascular wall.
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Affiliation(s)
- Anton Kondakov
- Ultrasound and Functional Diagnostics Department, Federal Center of Brain Research and Neurotechnologies, 117513 Moscow, Russia
- Radiology and Radiotherapy Department, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Alexander Berdalin
- Ultrasound and Functional Diagnostics Department, Federal Center of Brain Research and Neurotechnologies, 117513 Moscow, Russia
- Correspondence: or ; Tel.: +7-926-276-88-32
| | - Mikhail Beregov
- Ultrasound and Functional Diagnostics Department, Federal Center of Brain Research and Neurotechnologies, 117513 Moscow, Russia
| | - Vladimir Lelyuk
- Ultrasound and Functional Diagnostics Department, Federal Center of Brain Research and Neurotechnologies, 117513 Moscow, Russia
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10
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Yang W, Zhong Z, Feng G, Wang Z. Advances in positron emission tomography tracers related to vascular calcification. Ann Nucl Med 2022; 36:787-797. [PMID: 35834116 DOI: 10.1007/s12149-022-01771-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/03/2022] [Indexed: 11/28/2022]
Abstract
Microcalcification, a type of vascular calcification, increases the instability of plaque and easily leads to acute clinical events. Positron emission tomography (PET) is a new examination technology with significant advantages in identifying vascular calcification, especially microcalcification. The use of the 18F-NaF is undoubtedly the benchmark, and other PET tracers related to vascular calcification are also currently in development. Despite all this, a large number of studies are still needed to further clarify the specific mechanisms and characteristics. This review aimed at providing a summary of the application and progress of different PET tracers and also the future development direction.
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Affiliation(s)
- Wenjun Yang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Zhiqi Zhong
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Guoquan Feng
- Department of Radiology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Zhongqun Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China.
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Cardiovascular changes after pneumonia in a dual disease mouse model. Sci Rep 2022; 12:11124. [PMID: 35778475 PMCID: PMC9249762 DOI: 10.1038/s41598-022-15507-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/24/2022] [Indexed: 12/04/2022] Open
Abstract
Residual inflammation in cardiovascular organs is thought to be one of the catalysts for the increased risk of cardiovascular complications seen following pneumonia. To test this hypothesis, we investigated changes in plaque characteristics and inflammatory features in ApoE−/− mouse aorta and heart following pneumonia. Male ApoE−/− mice were fed a high fat diet for 8 weeks before intranasal inoculation with either Streptococcus pneumoniae serotype 4 (test group) or phosphate buffered saline (control group). Mice were sacrificed at 2-, 7- and 28-days post-challenge. Changes in plaque burden and characteristics in aortic root and thoracic aorta were characterized by Oil red O and Trichrome stains. Inflammatory changes were investigated by FDG-PET imaging and immunofluorescence staining. We found TIGR4-infected mice present with increased plaque presence in the aortic root and thoracic aorta at 2- and 28-days post-inoculation, respectively. Aortic wall remodelling was also more pronounced in mice challenged with pneumococci at 28 days post-inoculation. Aortic root plaques of infected mice had reduced collagen and smooth muscle cells, consistent with an unstable plaque phenotype. Pneumonia alters plaque burden, plaque characteristics, and aortic wall remodelling in ApoE−/− mice. These effects caused by Streptococcus pneumoniae TIGR4, may contribute to the increased risk of cardiovascular complications seen in survivors of this infection.
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