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Pietikäinen A, Siitonen R, Liljenbäck H, Eskola O, Söderström M, Roivainen A, Hytönen J. In vivo imaging of Lyme arthritis in mice by [ 18F]fluorodeoxyglucose positron emission tomography/computed tomography. Scand J Rheumatol 2017. [PMID: 28649922 DOI: 10.1080/03009742.2017.1287306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Lyme borreliosis (LB) is a tick-borne infectious disease caused by Borrelia burgdorferi spirochaetes, which are able to disseminate from the tick-bite site to distant organs. Mouse models are widely used to study LB and especially Lyme arthritis (LA), but only a few whole-animal in vivo imaging studies on the pathogenesis of B. burgdorferi infection in mice have been published so far. The existing imaging techniques have their drawbacks and, therefore, novel tools to complement the array of available LB imaging methodologies are needed. METHOD The applicability of positron emission tomography combined with computed tomography (PET/CT) imaging was evaluated as a method to monitor LB and especially LA in the C3H/HeN mouse model infected with wild-type B. burgdorferi N40 bacteria. The imaging results were compared with the traditional LA analysis methods, such as tibiotarsal joint swelling and histopathological assessment of joint inflammation. RESULTS PET/CT imaging provided high-resolution images with quantitative information on the spatial and temporal distribution of the [18F]fluorodeoxyglucose ([18F]FDG) tracer in B. burgdorferi-infected mice. The [18F]FDG accumulated in the affected joints and activated lymph nodes of infected mice, while the tracer signal could not be visualized in these organs in uninfected control animals. Importantly, in vivo PET/CT imaging data were in agreement with the histopathological scoring of inflammation of mouse joints. CONCLUSION PET/CT imaging with [18F]FDG is a reliable method to longitudinally monitor the development and progression of B. burgdorferi infection-induced inflammation in vivo in mouse joints.
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Affiliation(s)
- A Pietikäinen
- a Department of Medical Microbiology and Immunology , University of Turku , Turku , Finland.,b Turku Doctoral Programme for Molecular Medicine , University of Turku , Turku , Finland
| | - R Siitonen
- c Turku PET Centre , Turku University Hospital and University of Turku , Turku , Finland
| | - H Liljenbäck
- c Turku PET Centre , Turku University Hospital and University of Turku , Turku , Finland.,d Turku Center for Disease Modeling , University of Turku , Turku , Finland
| | - O Eskola
- c Turku PET Centre , Turku University Hospital and University of Turku , Turku , Finland
| | - M Söderström
- e Department of Pathology and Forensic Medicine , Turku University Hospital and University of Turku , Turku , Finland
| | - A Roivainen
- c Turku PET Centre , Turku University Hospital and University of Turku , Turku , Finland.,d Turku Center for Disease Modeling , University of Turku , Turku , Finland
| | - J Hytönen
- a Department of Medical Microbiology and Immunology , University of Turku , Turku , Finland.,f Department of Clinical Microbiology and Immunology , Turku University Hospital , Turku , Finland
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Emamifar A, Hess S, Gerke O, Hermann AP, Laustrup H, Hansen PS, Thye-Rønn P, Marcussen N, Svendstrup F, Gildberg-Mortensen R, Bang JC, Farahani ZA, Chrysidis S, Toftegaard P, Andreasen RA, le Greves S, Andersen HR, Olsen RN, Hansen IMJ. Polymyalgia rheumatica and giant cell arteritis-three challenges-consequences of the vasculitis process, osteoporosis, and malignancy: A prospective cohort study protocol. Medicine (Baltimore) 2017; 96:e7297. [PMID: 28658131 PMCID: PMC5500053 DOI: 10.1097/md.0000000000007297] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Polymyalgia rheumatica (PMR) and giant cell arteritis (GCA) are common inflammatory conditions. The diagnosis of PMR/GCA poses many challenges since there are no specific diagnostic tests. Recent literature emphasizes the ability of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) to assess global disease activity in inflammatory diseases. 18F-FDG PET/CT may lead to the diagnosis at an earlier stage than conventional imaging and may also assess response to therapy. With respect to the management of PMR/GCA, there are 3 significant areas of concern as follows: vasculitis process/vascular stiffness, malignancy, and osteoporosis. METHODS AND ANALYSIS All patients with suspected PMR/GCR referred to the Rheumatology section of Medicine Department at Svendborg Hospital, Denmark. The 4 separate studies in the current protocol focus on: the association of clinical picture of PMR/GCA with PET findings; the validity of 18F-FDG PET/CT scan for diagnosis of PMR/GCA compared with temporal artery biopsy; the prevalence of newly diagnosed malignancies in patients with PMR/GCA, or PMR-like syndrome, with the focus on diagnostic accuracy of 18F-FDG PET/CT scan compared with conventional workup (ie, chest X-ray/abdominal ultrasound); and the impact of disease process, and also steroid treatment on bone mineral density, body composition, and vasculitis/vascular stiffness in PMR/GCA patients. ETHICS AND DISSEMINATION The study has been approved by the Regional Ethics Committee of the Region of Southern Denmark (identification number: S-20160098) and Danish Data Protection Agency (J.nr 16/40522). Results of the study will be disseminated via publications in peer-reviewed journals, and presentation at national and international conferences.
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Affiliation(s)
- Amir Emamifar
- Department of Rheumatology, Odense University Hospital, Svendborg Hospital, Svendborg
| | - Søren Hess
- Faculty of Health Sciences, University of Southern Denmark
- Department of Nuclear Medicine, Odense University Hospital, Odense
- Department of Radiology and Nuclear Medicine, Hospital Southwest Jutland, Esbjerg
| | - Oke Gerke
- Department of Nuclear Medicine, Odense University Hospital, Odense
- Centre of Health Economics Research, University of Southern Denmark
| | | | - Helle Laustrup
- Department of Rheumatology, Odense University Hospital, Odense
| | - Per Syrak Hansen
- Diagnostic center, Odense University Hospital, Svendborg Hospital, Svendborg
| | - Peter Thye-Rønn
- Diagnostic center, Odense University Hospital, Svendborg Hospital, Svendborg
| | | | | | | | - Jacob Christian Bang
- Department of Radiology, Odense University Hospital, Svendborg Hospital, Svendborg
| | | | | | - Pia Toftegaard
- Department of Rheumatology, Odense University Hospital, Svendborg Hospital, Svendborg
| | | | | | - Hanne Randi Andersen
- Patient Research Partner, Department of Rheumatology, Odense University Hospital, Svendborg Hospital, Svendborg, Denmark
| | - Rudolf Nezlo Olsen
- Patient Research Partner, Department of Rheumatology, Odense University Hospital, Svendborg Hospital, Svendborg, Denmark
| | - Inger Marie Jensen Hansen
- Department of Rheumatology, Odense University Hospital, Svendborg Hospital, Svendborg
- Faculty of Health Sciences, University of Southern Denmark
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Bhattarai A, Nakajima T, Sapkota S, Arisaka Y, Tokue A, Yonemoto Y, Tsushima Y. Diagnostic value of 18F-fluorodeoxyglucose uptake parameters to differentiate rheumatoid arthritis from other types of arthritis. Medicine (Baltimore) 2017; 96:e7130. [PMID: 28640086 PMCID: PMC5484194 DOI: 10.1097/md.0000000000007130] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 12/23/2022] Open
Abstract
We aimed evaluate F-fluorodeoxyglucose uptake at major joints for differentiating patients with rheumatoid arthritis (RA) from those with non-RA arthritis using F-fluorodeoxyglucose (FDG)-positron emission tomography (PET).Eighteen patients with RA (13 women; age, 66.8 ± 13.2 years) and 17 patients with non-RA (6 women; age, 50.8 ± 12.5 years) were included. Twelve joints of each patient were examined: shoulder, elbow, wrist, hip, knee, and ankle on both sides. A visual scoring (VS) system was used; quantitative parameters such as maximum standardized uptake value (SUVmax), metabolic active volume (MAV), and total lesion glycolysis (TLG) were evaluated. Total score and value of each parameter were compared between the RA and non-RA groups.Total VS score (mean, 37.7 ± 9.0 vs 21.9 ± 7.2; P < .0001) and SUVmax (mean, 28.1 ± 8.5 vs 17.9 ± 5.8; P < .001) were significantly higher in the RA group than in the non-RA group. A significant between-group difference was also observed with respect to total MAV (608.3 ± 370.7 vs 176.5 ± 217.8; P < .001) and total TLG (1139.3 ± 759.1 vs 289.5 ± 395.4; P < .001). Receiver operating characteristic curve analysis revealed that total VS had the highest area under curve (.92), with sensitivity and specificity of 88.9% and 76.4%, respectively.Quantitative PET parameters could differentiate RA from non-RA. Total VS score, however, appears to be the best convenient qualitative tool for diagnosing RA.
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Affiliation(s)
- Anu Bhattarai
- Department of Diagnostic Radiology and Nuclear Medicine
| | | | | | | | - Azusa Tokue
- Department of Diagnostic Radiology and Nuclear Medicine
| | - Yukio Yonemoto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine
| | - Yoshito Tsushima
- Department of Diagnostic Radiology and Nuclear Medicine
- Research Program for Diagnostic and Molecular Imaging, Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research (GIAR), Gunma, Japan
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Scherer DJ, Psaltis PJ. Future imaging of atherosclerosis: molecular imaging of coronary atherosclerosis with (18)F positron emission tomography. Cardiovasc Diagn Ther 2016; 6:354-67. [PMID: 27500093 DOI: 10.21037/cdt.2015.12.02] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Atherosclerosis is characterized by the formation of complex atheroma lesions (plaques) in arteries that pose risk by their flow-limiting nature and propensity for rupture and thrombotic occlusion. It develops in the context of disturbances to lipid metabolism and immune response, with inflammation underpinning all stages of plaque formation, progression and rupture. As the primary disease process responsible for myocardial infarction, stroke and peripheral vascular disease, atherosclerosis is a leading cause of morbidity and mortality on a global scale. A precise understanding of its pathogenic mechanisms is therefore critically important. Integral to this is the role of vascular wall imaging. Over recent years, the rapidly evolving field of molecular imaging has begun to revolutionize our ability to image beyond just the anatomical substrate of vascular disease, and more dynamically assess its pathobiology. Nuclear imaging by positron emission tomography (PET) can target specific molecular and biological pathways involved in atherosclerosis, with the application of (18)Fluoride PET imaging being widely studied for its potential to identify plaques that are vulnerable or high risk. In this review, we discuss the emergence of (18)Fluoride PET as a promising modality for the assessment of coronary atherosclerosis, focusing on the strengths and limitations of the two main radionuclide tracers that have been investigated to date: 2-deoxy-2-((18)F)fluoro-D-glucose ((18)F-FDG) and sodium (18)F-fluoride ((18)F-NaF).
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Affiliation(s)
- Daniel J Scherer
- Vascular Research Centre, Heart Health Theme, South Australian Health and Medical Research Institute, Adelaide, South Australia 5000, Australia;; Royal Adelaide Hospital, South Australia 5000, Australia; ; School of Medicine, The University of Adelaide, South Australia 5000, Australia
| | - Peter J Psaltis
- Vascular Research Centre, Heart Health Theme, South Australian Health and Medical Research Institute, Adelaide, South Australia 5000, Australia;; Royal Adelaide Hospital, South Australia 5000, Australia; ; School of Medicine, The University of Adelaide, South Australia 5000, Australia
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Adrenal tuberculosis masquerading as disseminated malignancy: A pitfall of 18 F-FDG PET/CT Imaging. Rev Esp Med Nucl Imagen Mol 2016. [DOI: 10.1016/j.remnie.2015.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gorla A, Gupta K, Sood A, Biswal C, Bhansali A, Mittal B. Adrenal tuberculosis masquerading as disseminated malignancy: A pitfall of 18 F-FDG PET/CT Imaging. Rev Esp Med Nucl Imagen Mol 2016; 35:257-9. [DOI: 10.1016/j.remn.2015.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 11/29/2022]
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Zhou PU, Tang J, Zhang D, Li G. False-positive 18F-fluorodeoxyglucose positron emission tomography/computed tomography in a patient with metallic implants following chondrosarcoma resection. Mol Clin Oncol 2016; 4:830-832. [PMID: 27123290 DOI: 10.3892/mco.2016.801] [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: 08/27/2015] [Accepted: 02/22/2016] [Indexed: 11/05/2022] Open
Abstract
Positron emission tomography (PET) with fluorine-18-labeled fluorodeoxyglucose (18F-FDG) has been used for the staging and evaluation of recurrence in cancer patients. We herein report a false-positive result of 18F-FDG PET/computed tomography (CT) scan in a patient following chondrosarcoma resection and metallic implanting. A 35-year-old male patient with chondrosarcoma of the left iliac bone underwent radical resection, metal brace implanting and radiotherapy. A high uptake of 18F-FDG was observed in the metallic implants and adjacent tissue during PET/CT scanning in the 5th year of follow-up. Tissue biopsy and follow-up examination identified no tumor recurrence or infection at these sites, suggesting that the results of 18F-FDG PET/CT must be interpreted with caution in cancer patients with metallic implants.
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Affiliation(s)
- P U Zhou
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Jinliang Tang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Dong Zhang
- Department of Pathology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Guanghui Li
- Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
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