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Wysokińska E, Cichos J, Kowalczyk A, Karbowiak M, Strządała L, Bednarkiewicz A, Kałas W. Toxicity Mechanism of Low Doses of NaGdF₄:Yb 3+,Er 3+ Upconverting Nanoparticles in Activated Macrophage Cell Lines. Biomolecules 2019; 9:biom9010014. [PMID: 30609856 PMCID: PMC6359000 DOI: 10.3390/biom9010014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/15/2018] [Accepted: 12/21/2018] [Indexed: 02/03/2023] Open
Abstract
Gadolinium-doped nanoparticles (NPs) are regarded as promising luminescent probes. In this report, we studied details of toxicity mechanism of low doses of NaGdF4-based fluorescent nanoparticles in activated RAW264.7, J774A.1 macrophages. These cell lines were specifically sensitive to the treatment with nanoparticles. Using nanoparticles of three different sizes, but with a uniform zeta potential (about −11 mV), we observed rapid uptake of NPs by the cells, resulting in the increased lysosomal compartment and subsequent superoxide induction along with a decrease in mitochondrial potential, indicating the impairment of mitochondrial homeostasis. At the molecular level, this led to upregulation of proapoptotic Bax and downregulation of anti-apoptotic Bcl-2, which triggered the apoptosis with phosphatidylserine externalization, caspase-3 activation and DNA fragmentation. We provide a time frame of the toxicity process by presenting data from different time points. These effects were present regardless of the size of nanoparticles. Moreover, despite the stability of NaGdF4 nanoparticles at low pH, we identified cell acidification as an essential prerequisite of cytotoxic reaction using acidification inhibitors (NH4Cl or Bafilomycin A1). Therefore, approaching the evaluation of the biocompatibility of such materials, one should keep in mind that toxicity could be revealed only in specific cells. On the other hand, designing gadolinium-doped NPs with increased resistance to harsh conditions of activated macrophage phagolysosomes should prevent NP decomposition, concurrent gadolinium release, and thus the elimination of its toxicity.
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Affiliation(s)
- Edyta Wysokińska
- Hirszfeld Institute of Immunology and Experimental Therapy, PAS, 53-114 Wroclaw, Poland.
| | - Jakub Cichos
- Faculty of Chemistry, University of Wroclaw, 50-383 Wroclaw, Poland.
| | | | | | - Leon Strządała
- Hirszfeld Institute of Immunology and Experimental Therapy, PAS, 53-114 Wroclaw, Poland.
| | | | - Wojciech Kałas
- Hirszfeld Institute of Immunology and Experimental Therapy, PAS, 53-114 Wroclaw, Poland.
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Prybylski JP, Coste Sanchez C, Jay M. Impact of chelation timing on gadolinium deposition in rats after contrast administration. Magn Reson Imaging 2019; 55:140-144. [PMID: 30321663 PMCID: PMC6263939 DOI: 10.1016/j.mri.2018.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 10/02/2018] [Accepted: 10/06/2018] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To determine if gadolinium (Gd) can be rechelated once released from Gd-based contrast agents (GBCAs) and deposited in vivo. Despite extensive research comparing GBCAs and GBCA formulations as well as the ongoing debate about their risks of deposition and the role of Gd release, it remains unknown if retained Gd can be eliminated by administering chelating agents. MATERIALS AND METHODS Rats were injected intravenously with 10 doses of 1 mmol/kg gadodiamide and treated with intravenous Zn-DTPA (30 μmol/kg) concomitantly or 1, 4 or 8 h after GBCA administration (N = 3 rats per group). After euthanization, tissues were harvested three days after the last dose of gadodiamide and tissue Gd concentrations were assessed by ICP-MS. Additionally, a simulation of a single 0.1 mmol/kg gadopentetate dose with 30 μmol/kg DTPA given either concomitantly or within the first 24 h after GBCA was run; simulated tissue Gd concentrations were compared with those observed in rats to determine if simulated trends were accurate. RESULTS Concomitant DTPA did not produce a significant reduction in Gd concentration in any organ for rats. There was a time-dependent trend in liver Gd reduction. The 1 h timepoint was associated with a non-significant increase in kidney, brain and femur Gd relative to untreated controls. There were no significant deviations from the model-predicted Gd changes. DISCUSSION Both the simulation and rat study did not identify major benefits for chelation at the doses given, despite the simulation assuming all Gd deposited in tissues is unchelated. The potential redistribution in the rat study provide a compelling result that may impact the clinical relevance of further work investigating rechelation of Gd. Future work should further describe the three-dimensional dose-time-response relationship for preventing Gd deposition, and how that relates to long-term Gd toxicities.
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Affiliation(s)
- John P Prybylski
- Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States of America
| | - Carla Coste Sanchez
- Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States of America
| | - Michael Jay
- Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States of America.
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Should Spinal MRI Be Routinely Performed in Patients With Clinically Isolated Optic Neuritis? J Neuroophthalmol 2018; 38:502-510. [DOI: 10.1097/wno.0000000000000685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Screening BRCA1 and BRCA2 Mutation Carriers for Breast Cancer. Cancers (Basel) 2018; 10:cancers10120477. [PMID: 30513626 PMCID: PMC6315500 DOI: 10.3390/cancers10120477] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/19/2018] [Accepted: 11/29/2018] [Indexed: 01/15/2023] Open
Abstract
Women with BRCA mutations, who choose to decline or defer risk-reducing mastectomy, require a highly sensitive breast screening regimen they can begin by age 25 or 30. Meta-analysis of multiple observational studies, in which both mammography and magnetic resonance imaging (MRI) were performed annually, demonstrated a combined sensitivity of 94% for MRI plus mammography compared to 39% for mammography alone. There was negligible benefit from adding screening ultrasound or clinical breast examination to the other two modalities. The great majority of cancers detected were non-invasive or stage I. While the addition of MRI to mammography lowered the specificity from 95% to 77%, the specificity improved significantly after the first round of screening. The median follow-up of women with screen-detected breast cancer in the above observational studies now exceeds 10 years, and the long-term breast cancer-free survival in most of these studies is 90% to 95%. However, ongoing follow-up of these study patients, as well of women screened and treated more recently, is necessary. Advances in imaging technology will make highly sensitive screening accessible to a greater number of high-risk women.
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Abstract
Intravenous gadobutrol [Gadovist™ (EU); Gadavist® (USA)] is a second-generation, extracellular non-ionic macrocyclic gadolinium-based contrast agent (GBCA) that is approved for use in paediatric (including term neonates) and adult patients undergoing diagnostic contrast-enhanced (CE) MRI for visualization of pathological lesions in all body regions or for CE MRA to evaluate perfusion and flow-related abnormalities. Its unique physicochemical profile, including its high thermostability and proton relaxation times, means that gadobutrol is formulated at twice the gadolinium ion concentration of other GBCAs, resulting in a narrower bolus and consequently, improved dynamic image enhancement. Based on > 20 years of experience in the clinical trial and real-world settings (> 50 million doses) and its low risk for developing nephrogenic systemic fibrosis (NSF), gadobutrol represents an effective and safe diagnostic GBCA for use in CE MRI and MRA to visualize pathological lesions and vascular perfusion and flow-related abnormalities in all body regions in a broad spectrum of patients, including term neonates and other paediatric patients, young and elderly adult patients, and those with moderate or severe renal or hepatic impairment or cardiovascular (CV) disease.
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Ugga L, Cocozza S, Pontillo G, Russo C, Brescia Morra V, Lanzillo R, Riccio E, Pisani A, Brunetti A. Absence of infratentorial lesions in Fabry disease contributes to differential diagnosis with multiple sclerosis. Brain Behav 2018; 8:e01121. [PMID: 30277321 PMCID: PMC6236241 DOI: 10.1002/brb3.1121] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/12/2018] [Accepted: 08/17/2018] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND AND PURPOSE Multiple Sclerosis (MS) has been proposed as a possible differential diagnosis with Fabry Disease (FD). We evaluated the incidence of infratentorial lesions in FD patients, investigating whether their presence could help in differentiating these two conditions. We explored the diagnostic accuracy of this sign alone and in combination to the involvement of corpus callosum (CC). METHODS White Matter lesions were retrospectively evaluated on FLAIR images available from 136 MS and 144 FD patients. Infratentorial involvement was assessed considering the whole cerebellum, and the part of the brainstem included between the occipital foramen and the upper edge of the red nucleus. Furthermore, the presence of callosal lesions was also recorded, evaluating the portion of CC included between the two external walls of the lateral ventricles. RESULTS Infratentorial involvement was detectable in 119/136 (87.5%) MS patients, while it was present in only 17/144 (11.8%) FD patients. When the diagnostic performance of a positive infratentorial involvement was evaluated in combination with the presence of CC lesions, a specificity of 97%, with a positive predictive value of 96% was reached. CONCLUSIONS We concluded that the absence of infratentorial lesions, especially when combined to the evaluation of other typical imaging features, can help in the differential diagnosis between MS and FD.
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Affiliation(s)
- Lorenzo Ugga
- Department of Advanced Biomedical SciencesUniversity of Naples “Federico II”NaplesItaly
| | - Sirio Cocozza
- Department of Advanced Biomedical SciencesUniversity of Naples “Federico II”NaplesItaly
| | - Giuseppe Pontillo
- Department of Advanced Biomedical SciencesUniversity of Naples “Federico II”NaplesItaly
| | - Camilla Russo
- Department of Advanced Biomedical SciencesUniversity of Naples “Federico II”NaplesItaly
| | - Vincenzo Brescia Morra
- Department of Neurosciences and Reproductive and Odontostomatological SciencesUniversity of Naples “Federico II”NaplesItaly
| | - Roberta Lanzillo
- Department of Neurosciences and Reproductive and Odontostomatological SciencesUniversity of Naples “Federico II”NaplesItaly
| | - Eleonora Riccio
- Department of Public Health, Nephrology UnitUniversity of Naples “Federico II”NaplesItaly
| | - Antonio Pisani
- Department of Public Health, Nephrology UnitUniversity of Naples “Federico II”NaplesItaly
| | - Arturo Brunetti
- Department of Advanced Biomedical SciencesUniversity of Naples “Federico II”NaplesItaly
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An C, Kim DY, Choi JY, Han KH, Roh YH, Kim MJ. Noncontrast magnetic resonance imaging versus ultrasonography for hepatocellular carcinoma surveillance (MIRACLE-HCC): study protocol for a prospective randomized trial. BMC Cancer 2018; 18:915. [PMID: 30249190 PMCID: PMC6154402 DOI: 10.1186/s12885-018-4827-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 09/17/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Biannual ultrasound (US)-with or without alpha-fetoprotein (AFP)-is recommended by current guidelines for the surveillance of hepatocellular carcinoma (HCC). However, the inadequate sensitivity of US has been a concern. Magnetic resonance imaging (MRI) is known to have high sensitivity in detecting hepatic malignancies, even without contrast enhancement. The purpose of our study is to compare US with noncontrast (unenhanced) MRI for HCC surveillance of high-risk patients. METHODS/DESIGN MIRACLE-HCC (usefulness of noncontrast MagnetIc Resonance imAging versus nonContrast ultrasonography for surveiLlancE of HepatoCellular Carcinoma) is a prospective, single-center, nonblinded, balanced-randomized, parallel-group study. This study was approved by our institutional review board, and informed consent will be obtained from all participating patients. All patients with compensated liver cirrhosis will undergo noncontrast US or MRI, with serum AFP testing every 6 months. If a suspicious lesion is newly detected, or if the serum AFP level is elevated in an increasing trend for two consecutive tests, dynamic contrast-enhanced imaging will be performed to confirm the diagnosis. The primary endpoints are detection rates of very early or early stage HCC, stage distribution at the initial diagnosis, and false positive referral rates, which will be compared using Fisher's exact or chi-square tests. The study will include 416 patients in a tertiary academic medical center in South Korea. DISCUSSION MIRACLE-HCC is the first prospective randomized trial to compare the effectiveness of noncontrast MRI and noncontrast US in the surveillance of HCC in at-risk patients. The results of this trial will show whether noncontrast MRI surveillance is superior to noncontrast US surveillance in the early detection of HCC. The trial will also determine whether there are fewer false referrals with noncontrast MRI than with noncontrast US and, eventually, whether there is improvement in the overall survival of HCC patients. TRIAL REGISTRATION The date of trial registration (ClincalTrials.gov: NCT02514434 ) for this study is July 23, 2015. Enrollment of participants was finished in November 2017. No authors have relationships, conditions, or circumstances that present potential conflicts of interest.
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Affiliation(s)
- Chansik An
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Do Young Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Jin-Young Choi
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Kwang Hyub Han
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Yun Ho Roh
- Biostatistics Collaboration Unit, Medical Research Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Myeong-Jin Kim
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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Is an Intravenous Injection of Gadolinium Really Necessary for Intralabyrinthine Schwannomas MR Examination? Otol Neurotol 2018; 39:e579-e584. [PMID: 29957669 DOI: 10.1097/mao.0000000000001881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Our aim was to confirm the usefulness of T2-weighted (T2W) gradient-echo sequence for detection and topographic diagnosis of intralabyrinthine schwannomas (ILS) compared with T1W contrast-enhanced sequence as gold standard, to evaluate the necessity of intravenous gadolinium injection for ILS follow-up imaging. METHODS Thirty patients with ILS were retrospectively enrolled and compared to a control group of 30 patients with no inner ear pathology. All patients underwent a T2W gradient-echo steady-state free precession (SSFP) acquisition at 3T, which was visually analyzed by two radiologists and compared to contrast-enhanced T1W sequence. A quantitative analysis was also performed, with the measurement of the tumor and inner ear signal on T2W images and the measurement of the tumor length in cochlear schwannomas. RESULTS T2W FIESTA-C sequence correctly diagnosed ILS with a sensitivity (Se) of 95% and a specificity (Sp) of 100%, with matching results for their topographic evaluation (Se 92%, Sp 98%) compared with the gold-standard. The difference between the two sequences was only 2.5%, with excellent interobserver agreement. The tumor signal on T2W images was significantly lower than the normal bright signal of the normal inner ear fluids (mean signal ratio = 0.42 vs 0.98). CONCLUSION The positive and topographic diagnostic accuracy of T2W FIESTA-C sequence was excellent compared with the T1W contrast-enhanced sequence, even though the latter remains easier and faster to analyze for an untrained radiologist. The performances of T2W gradient-echo sequence at 3T make it a reasonable alternative strategy for following ILS after they are diagnosed.
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Stoll ML, Kau CH, Waite PD, Cron RQ. Temporomandibular joint arthritis in juvenile idiopathic arthritis, now what? Pediatr Rheumatol Online J 2018; 16:32. [PMID: 29695255 PMCID: PMC5918758 DOI: 10.1186/s12969-018-0244-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 04/04/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Arthritis involving the temporomandibular joint (TMJ) complicates 40 - 96% of cases of juvenile idiopathic arthritis (JIA), potentially leading to devastating changes to form and function. Optimal evaluation and management of this joint remains a matter of ongoing discussion. METHODS We performed a PubMed search for all articles with keywords "temporomandibular" and "arthritis", covering the dates 2002 through February 28, 2018. A separate PubMed search was performed for all articles with keywords "temporomandibular joint", "arthritis", and "treatment" covering the same dates. FINDINGS The TMJ is a particularly challenging joint to assess, both clinically and with imaging studies. Clinical assessment of the TMJ is hampered by the low sensitivity of joint pain as well as the absence of physical exam findings early in the disease process. As with all joints, plain radiography and computed tomography only detect arthritic sequelae. Additionally, there is mixed data on the sensitivity of ultrasound, leaving magnetic resonance imaging (MRI) as the optimal diagnostic modality. However, several recent studies have shown that non-arthritic children can have subtle findings on MRI consistent with TMJ arthritis, such as joint effusion and contrast enhancement. Consequently, there has been an intense effort to identify features that can be used to differentiate mild TMJ arthritis from normal TMJs, such as the ratio of the enhancement within the TMJ itself compared to the enhancement in surrounding musculature. With respect to treatment of TMJ arthritis, there is minimal prospective data on medical therapy of this complicated joint. Retrospective studies have suggested that the response to medical therapy of the TMJ may lag behind that of other joints, prompting use of intraarticular (IA) therapy. Although most studies have shown short-term effectiveness of corticosteroids, the long-term safety of this therapy on local growth as well as on the development of IA heterotopic bone have prompted recommendations to limit use of IA corticosteroids. Severe TMJ disease from JIA can also be managed non-operatively with splints in a growing child, as well as with surgery. CONCLUSION In this review, we summarize literature on the diagnosis and management of TMJ arthritis in JIA and suggest a diagnostic and therapeutic algorithm for children with refractory TMJ arthritis.
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Affiliation(s)
- Matthew L. Stoll
- 0000000106344187grid.265892.2Department of Pediatrics, University of Alabama at Birmingham (UAB), 1600 7th Avenue South, Children’s Park Place North Suite G10, Birmingham, 35233 AL USA
| | - Chung H. Kau
- 0000000106344187grid.265892.2Department of Orthodontics, UAB, 1720 2nd Avenue South, School of Dentistry Building 305, Birmingham, 35294 AL USA
| | - Peter D. Waite
- 0000000106344187grid.265892.2Department of Oral and Maxillofacial Surgery, UAB, 1720 2nd Avenue South, School of Dentistry Building 419, Birmingham, 35294 AL USA
| | - Randy Q. Cron
- 0000000106344187grid.265892.2Department of Pediatrics, University of Alabama at Birmingham (UAB), 1600 7th Avenue South, Children’s Park Place North Suite G10, Birmingham, 35233 AL USA
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Pullicino R, Radon M, Biswas S, Bhojak M, Das K. A Review of the Current Evidence on Gadolinium Deposition in the Brain. Clin Neuroradiol 2018. [PMID: 29523896 DOI: 10.1007/s00062-018-0678-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Over the past 3 years, gadolinium-based contrast agents have been linked to MRI signal changes in the brain, which have been found to be secondary to gadolinium deposition in the brain, particularly in the dentate nuclei and globus pallidus even in patients having an intact blood-brain barrier and a normal renal function. This tends to occur more in linear agents than with macrocyclic agents. Nonetheless, there has been no significant evidence that this has any clinical consequence. We reviewed the current evidence related to this new phenomenon and the precautionary approach taken by regulatory agencies.
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Affiliation(s)
- Richard Pullicino
- Neuroradiology Department, The Walton Centre NHS Foundation Trust, Lower Lane, L9 7LJ, Liverpool, UK.
| | - Mark Radon
- Neuroradiology Department, The Walton Centre NHS Foundation Trust, Lower Lane, L9 7LJ, Liverpool, UK
| | - Shubhabrata Biswas
- Neuroradiology Department, The Walton Centre NHS Foundation Trust, Lower Lane, L9 7LJ, Liverpool, UK
| | - Maneesh Bhojak
- Neuroradiology Department, The Walton Centre NHS Foundation Trust, Lower Lane, L9 7LJ, Liverpool, UK
| | - Kumar Das
- Neuroradiology Department, The Walton Centre NHS Foundation Trust, Lower Lane, L9 7LJ, Liverpool, UK
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Carotti M, Galeazzi V, Catucci F, Zappia M, Arrigoni F, Barile A, Giovagnoni A. Clinical utility of eco-color-power Doppler ultrasonography and contrast enhanced magnetic resonance imaging for interpretation and quantification of joint synovitis: a review. ACTA BIO-MEDICA : ATENEI PARMENSIS 2018; 89:48-77. [PMID: 29350637 PMCID: PMC6179068 DOI: 10.23750/abm.v89i1-s.7010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 01/11/2018] [Indexed: 12/11/2022]
Abstract
With the introduction of new biologics such as anti-TNF-alpha antibodies and other therapies in the treatment of inflammatory arthritis, capable of halting joint destruction and functional disability, there are new pressures on diagnostic and prognostic imaging. Early demonstration of pre-erosive inflammatory features and monitoring of the long-term effects of treatment are becoming increasingly important. Early detection of synovitis offers advantages in terms of allowing early instigation of therapy and may allow the identification of those patients displaying more aggressive disease who might benefit from early intervention with expensive DMARD therapy. Advanced imaging techniques such as ultrasound (US) and magnetic resonance imaging (MRI) have focussed on the demonstration and quantification of synovitis and allow early diagnosis of inflammatory arthropathies such as rheumatoid arthritis (RA) and psoriatic arthritis (PsA). Synovitis represents a potential surrogate measure of disease activity that can be monitored using either MRI or US; the techniques have, generally, focused on monitoring synovial volume or quality as assessed by its vascularity. However to achieve these goals, standardisation and validation of US and MRI are required to ensure accurate diagnosis, reproducibility and reliability. Each modality has different strengths and weaknesses and levels of validation. This article aims to increase the awareness of radiologists and rheumatologists about this field and to encourage them to participate and contribute to the ongoing development of these modalities. Without this collaboration, it is unlikely that these modalities will reach their full potential in the field of rheumatological imaging. This review is in two parts. The first part addresses the role of US and colour or power Doppler sonography (PDUS) in the detection and monitoring of synovitis in inflammatory arthropathies. The second part will look at advanced MR imaging and Dynamic contrast-enhanced MRI techniques and in particular how they are applied to the monitoring of the disease process.
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Manto M, Perrotta G. Toxic-induced cerebellar syndrome: from the fetal period to the elderly. HANDBOOK OF CLINICAL NEUROLOGY 2018; 155:333-352. [DOI: 10.1016/b978-0-444-64189-2.00022-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Lenkinski RE. Gadolinium Retention and Deposition Revisited: How the Chemical Properties of Gadolinium-based Contrast Agents and the Use of Animal Models Inform Us about the Behavior of These Agents in the Human Brain. Radiology 2017; 285:721-724. [DOI: 10.1148/radiol.2017172138] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Robert E. Lenkinski
- From the Department of Radiology and Advanced Imaging Research Center, University of Texas at Southwestern Medical Center, 5253 Harry Hines Blvd, Dallas, TX 75390-9061
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