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Cuellar-Calabria H, Burcet G, Juarez-Garcia MS, Reyes-Juárez JL, Pizzi MN, Aguadé-Bruix S, Roque A. Implementing a coronary CT angiography protocol based on the body mass index: Radiation dose reduction, image quality, and diagnostic performance. Radiologia (Engl Ed) 2024; 66:2-12. [PMID: 38365351 DOI: 10.1016/j.rxeng.2022.01.004] [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: 11/08/2021] [Accepted: 01/28/2022] [Indexed: 02/18/2024]
Abstract
OBJECTIVES To evaluate the relation between the coronary calcium score and the posterior choice of kilovoltage according to radiologists' criteria in a standard coronary CT angiography protocol to rule out coronary disease. To quantify the reduction in ionizing radiation after linking kilovoltage to patients' body mass index in a low-dose protocol with iterative model reconstruction. To evaluate the image quality and diagnostic performance of the low-dose protocol. MATERIAL AND METHODS We compared anthropometric characteristics, calcium score, kilovoltage levels, size-specific dose estimates (SSDE), and the dose-length product (DLP) between a group of 50 patients who were prospectively recruited to undergo coronary CT angiography with a low-dose protocol and a historical group of 50 patients who underwent coronary CT angiography with the standard protocol. We correlated these parameters, the number of coronary segments that could not be evaluated with and without temporal padding, the attenuation, and the signal-to-noise ratio in the ascending aorta in the low-dose protocol with excellent imaging quality according to a semiquantitative scale. To calculate the diagnostic performance per patient, we used 24-month clinical follow-up including all tests as the gold standard. RESULTS In the standard protocol, the presence of coronary calcium correlated with the selection of high kilovoltage (p = 0.02); this correlation was not found in the low-dose protocol (p = 0.47). Median values of SSDE and DLP were significantly (p < 0.001) lower and less dispersed in the low-dose protocol [9.22 mGy (IQR 7.84-12.1 mGy) vs. 26.5 mGy (IQR 21.3-36.3 mGy) in the standard protocol] and [97 mGy cm (IQR 78-134 mGy cm) vs. 253 mGy cm (IQR 216-404 mGy cm) in the standard protocol], respectively. The overall quality of the images obtained with the low-dose protocol was considered good or excellent in 96% of the studies. The parameters associated with image quality in a multivariable model (C statistic = 0.792) were heart rate (estimated coefficient, -0,12 [95% confidence interval: -0.2, -0.04]; p < 0.01) and the SSDE (estimated coefficient, -0,26 [95% confidence interval: -0.51, -0.01]; p < 0.05). The CAD-RADS modifier for a not fully evaluable or diagnostic study was used on two occasions (4%); the final measures for the diagnosis of coronary disease were sensitivity 100%, specificity 94%, and efficacy 94%. CONCLUSIONS In the standard protocol, the radiologist selects higher kilovoltage for CT angiography studies for patients whose previous calcium score indicates the presence of coronary calcium. In the low-dose protocol, linking kilovoltage with body mass index enables the dose of radiation to be reduced by 65% while obtaining excellent or good image quality in 96% of studies and excellent diagnostic performance.
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Affiliation(s)
- H Cuellar-Calabria
- Àrea d'Imatge Cardiovascular, Servicio de Radiodiagnóstico, Institut Diagnòstic per la Imatge (IDI), Hospital Universitari Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Research Institute (VHIR), Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain.
| | - G Burcet
- Àrea d'Imatge Cardiovascular, Servicio de Radiodiagnóstico, Institut Diagnòstic per la Imatge (IDI), Hospital Universitari Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Research Institute (VHIR), Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M S Juarez-Garcia
- Àrea d'Imatge Cardiovascular, Servicio de Radiodiagnóstico, Institut Diagnòstic per la Imatge (IDI), Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - J L Reyes-Juárez
- Àrea d'Imatge Cardiovascular, Servicio de Radiodiagnóstico, Institut Diagnòstic per la Imatge (IDI), Hospital Universitari Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Research Institute (VHIR), Barcelona, Spain
| | - M N Pizzi
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Research Institute (VHIR), Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - S Aguadé-Bruix
- Servicio de Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Research Institute (VHIR), Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - A Roque
- Àrea d'Imatge Cardiovascular, Servicio de Radiodiagnóstico, Institut Diagnòstic per la Imatge (IDI), Hospital Universitari Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Research Institute (VHIR), Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
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2
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Caselli C, Ragusa R, Di Giorgi N, Lorenzoni V, Buechel RR, Teresinska A, Pizzi MN, Roque A, Poddighe R, Knuuti J, Parodi O, Pelosi G, Scholte A, Rocchiccioli S, Neglia D. Association of serum MMP9 with adverse features of plaque progression in patients with chronic coronary syndrome (CCS). Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous studies have demonstrated that MMP-9 may be a predictor of atherosclerotic plaque instability and future adverse cardiovascular events, but longitudinal data on the association between MMP9 and coronary disease progression are lacking.
Purpose
This study is aimed at investigating whether MMP9 is associated with atherosclerotic plaque progression.
Methods
MMP9 serum levels were measured in stable patients with chronic coronary syndrome (CCS) undergoing coronary computed tomography angiography at baseline and after a period of 6.5±1.1 years of follow up to assess progression of Total, Fibrous, Fibro-fatty, Necrotic Core, and Dense Calcium plaque volume (PV). The relationship of serum MMP9 with plaque progression was assessed using linear regression analysis, adjusting for clinical variables including, age, sex, risk factors, medical therapy, LDL-C, TG/HDL-C ratio, hs-CRP, and the presence of obstructive CAD (>50% coronary stenosis in at least one major coronary vessels).
Results
A total of 157 patients (58±8 years of age; 66% males) were included in the analysis, with median MMP9 values of 135±186 mg/dL (mean ± SD). Annual changes of Total, Fibrous-Fatty and Necrotic Core PV were significantly different across MMP9 tertiles (Figure 1). Multivariable linear regression analysis demonstrated a positive association between serum levels of MMP9 and annual change of Total and Necrotic Core PV (Figure 1).
Conclusion
Among patients with CCS, MMP9 serum levels were an independent predictor of progression of coronary plaque burden and, in particular, of adverse plaque features, such as Necrotic Core PV. This association was robust and independent from baseline traditional cardiovascular risk factors and medications, supporting for MMP9 a role as a novel marker of residual coronary risk.
Funding Acknowledgement
Type of funding sources: Public grant(s) – EU funding. Main funding source(s): Horizon 2020 - Project “Simulation Modeling of coronary ARTery disease: a tool for clinical decision support–SMARTool”
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Affiliation(s)
- C Caselli
- Institute of Clinical Physiology (IFC) , Pisa , Italy
| | - R Ragusa
- Institute of Clinical Physiology (IFC) , Pisa , Italy
| | - N Di Giorgi
- Institute of Clinical Physiology (IFC) , Pisa , Italy
| | - V Lorenzoni
- Sant'Anna School of Advanced Studies , Pisa , Italy
| | - R R Buechel
- University Hospital Zurich , Zurich , Switzerland
| | | | - M N Pizzi
- University Hospital Vall d'Hebron , Barcelona , Spain
| | - A Roque
- University Hospital Vall d'Hebron , Barcelona , Spain
| | - R Poddighe
- USL Toscana Northwest , Viareggio , Italy
| | - J Knuuti
- University of Turku , Turku , Finland
| | - O Parodi
- Fondazione Toscana Gabriele Monasterio , Pisa , Italy
| | - G Pelosi
- Institute of Clinical Physiology (IFC) , Pisa , Italy
| | - A Scholte
- Leiden University Medical Center , Leiden , The Netherlands
| | | | - D Neglia
- Fondazione Toscana Gabriele Monasterio , Pisa , Italy
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Agostini F, Campese S, Vianello R, Pizzi M, Cipriani A, Zanetti M. A post processing pipeline to prepare raw data for machine learning algorithms in cardiac magnetic resonance imaging. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeac141.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Artificial Intelligence is an emergent tool in clinical practice for post processing of medical images. Machine Learning (ML) pipelines are created for data of interest extraction and algorithm application. A common issue in data extraction is represented by noisy datasets, like those of CMR studies, characterized by multiple images, acquired by different techniques, axis orientation and contrast timing.
Purpose
A ML pipeline for extraction of LGE images from raw DICOM data is presented. Additionally, steps for normalization of image number and automatically heart localization are outlined.
Methods and Results
642 consecutive CMR studies were analyzed.
Pipeline, Part 1. By looking at the metadata in raw files, ‘SequenceName’ tag was used to discard cine images, ‘ScanningSequence’ tag to select Gradient Recall and Inversion Recovery techniques (Inversion Time > 100 ms), ‘SequenceVariant’ tag to discard Steady State images (See Fig. 1). Orientation of the major axis was computed and ‘Axial’ or ‘Coronal’ images removed. Scans were grouped together by image orientation (requesting a min and max number of elements per group) and only the group with the largest number of files was selected. Finally, DICOMs were grouped by image shape (demanding a min number of elements), and only the series with the highest resolution was retained. Then, for each subject, the extracted series consists of a 3D-array (N,H,W), with N number of slices, and (H,W) image resolution. The attributes were not homogeneous between subjects.
Pipeline, Part 2. Given a desired final number of slices and resolution, the 3D-array was reshaped through a spline interpolation. In order to have a focus on the heart, a Region of Interest (ROI) extractor was implemented, based on a YOLO network for object detection. The network was applied on all the slices (Fig. 2); then the images were cropped by keeping the largest bounding box. This step allowed us to remove the background by only selecting the relevant ROIs. To manage the data more easily, images were saved as a NumPy Array, while other useful Dicom metadata (e.g. weight, age, …) were stored using the json standard.
At the end of the ML pipeline, images can be reduced to a common resolution and forwarded to ML algorithms.
By using this pipeline, a great amount of information not needed for LGE analysis can be discarded, granting a significant reduction in terms of data storage. In our series, the original dataset extended for about 200 GB; by requesting 10 slices per subject with a resolution of 128 by 128 pixels (also extracting heart ROI) the final dimension was reduced to 108 MB.
Conclusions
In this work, we presented a post-processing pipeline for CRM images and LGE analysis. Given in input raw CRM the pipeline is able to (i) remove unuseful data, (ii) extract heart ROIs storing also Dicom metadata, (iii) normalize slices and image resolution, and (iv) store the processed CRM into ready-format for ML techniques. Fig.1:Pipeline Schematic RepresentationFig.2:YOLO Heart Extraction
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Affiliation(s)
| | - S Campese
- University of Padua , Padova , Italy
| | | | - M Pizzi
- University of Padua , Padova , Italy
| | | | - M Zanetti
- University of Padua , Padova , Italy
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Campese S, Agostini F, Sciarretta T, Pizzi M, Cipriani A, Zanetti M. Myocardial fibrosis detection using kernel methods: preliminary results from a cardiac magnetic resonance study. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeac141.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Asserting the presence of myocardial fibrosis from cardiac magnetic resonance (CMR) images is sometimes a complex task, even for experienced cardiac imagers. The application of artificial intelligence models to the evaluation process can be of help for enhancing diagnostic accuracy.
Purpose
In this work, we tested two different Machine Learning (ML) algorithms, namely kernel methods with Support Vector Machine (SVM) and Convolutional Neural Network (CNN) to a cohort of consecutive CMR studies. The goal was a binary classification task, aimed to identify myocardial scar (present/absent).
Methods
Dataset consisted of 642 CMR scans, equally divided into healthy and fibrosis-affected. Raw DICOM files were preprocessed through an automated pipeline, in order to retrieve only short-axis post contrast acquisitions. Heart regions were then individuated using a YOLO network, in order to remove the background and focus only on data of interest. Finally, for each subject 10 slices were extracted through interpolation, and all images resized to 128 by 128 pixels. Dataset was divided into training and test sets, with proportions 80%-20%.
Results
The first analysis was based on state-of-the-art CNN models, pre-trained on the ImageNet dataset. The training of the models was optimized using "reduce learning rate on the plateau", "early stopping", and standard data augmentation techniques. Experiments showed that CNNs-based models led to poor performances.
The second attempt was based on kernel methods and SVM. Before feeding the input to the algorithm, dimensionality reduction was implemented using a Principal Component Analysis retaining 99% of the variance. The resulting 335 features were passed as input to an SVM, testing different kernels (e.g. Linear, Gaussian, Cossim). Models were trained and optimized using a Grid Search with a 5-fold Cross-Validation. The best SVM configuration displayed an accuracy of 68% and a sensitivity of 60%.
Improved results could be obtained using state-of-the-art Multiple Kernel Learning algorithms, leading to 71% accuracy and sensitivity of 72% (with a 12% increment with respect to the previous algorithm).
Conclusions
Our preliminary results of this study showed the possibility for a ML system to learn to identify myocardial fibrosis, directly from raw CMR images. In particular, kernel methods were able to achieve good and significant results, even with small amounts of data, suggesting room for improvement. In future works, we plan to furtherly explore kernel methods to improve the results and to build an end-to-end solution for cardiac imagers.
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Affiliation(s)
- S Campese
- University of Padua , Padova , Italy
| | | | | | - M Pizzi
- University of Padua , Padova , Italy
| | | | - M Zanetti
- University of Padua , Padova , Italy
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Rocchiccioli S, Di Giorgi N, Michelucci E, Signore G, Scholte AJHA, Knuuti J, Buechel RR, Teresinska A, Pizzi MN, Roque A, Poddighe R, Parodi O, Pelosi G, Neglia D, Caselli C. A common plasma lipidomics signature of cardiometabolic and coronary risk in statin users. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – EU funding. Main funding source(s): European Commission in the H2020 program: Project SMARTool, “Simulation
Modeling of coronary ARTery disease: a tool for clinical decision support—SMARTool”
Background and aims
The coexistence of elevated plasma triglycerides (TG) and low high-density lipoprotein cholesterol (HDL-C) may contribute to the residual cardiometabolic risk of coronary artery disease (CAD) independently of total cholesterol and low-density lipoprotein cholesterol (LDL-C) absolute plasma levels [1]. Aim of this study is to assess whether a high TG/HDL-C ratio is characterized by a specific lipidomics signature in statin users and its relationship with the coronary risk score defined by coronary computed tomography angiography (CTA).
Methods
TG/HDL-C ratio was calculated in 132 patients (68.8±7.7 years, 85 males) with suspected or known CAD referred to coronary CTA and receiving statins treatment in the last 6.3 ± 1.4 years before enrolment. Patients were grouped according to TG/HDL-C ratio quartiles: IQ (≤1.694), IIQ (1.695-2.399), IIIQ (2.400-3.281), and IVQ (>3.282). Coronary CTA exams were analysed according to the modified 17-segment American Heart Association classification [2] and interpretable segments were visually assessed for degree of stenosis and plaque composition. A comprehensive coronary risk score (CTA score) [3], previously validated as predictor of adverse outcome, was calculated in each patient. Except for subjects with normal arteries (CTA score = 0), all patients were classified into 3 groups of CTA score severity: low (score < 5), intermediate (score 5-20) and high (score > 20) risk [4]. Patient-specific plasma targeted lipidomics was performed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). This approach allowed to quantify 69 circulating lipids encompassing six lipid classes (triacylglycerol [TG], phosphatidylcholine [PC], phosphatidylethanolamine [PE], ceramide [Cer], sphingomyelin [SM], cholesterol ester [CE]). Differential analysis was performed using TG/HDL-C and CTA score annotation.
Results
18 altered lipid species in the group with higher TG/HDL-C ratio were also altered in the group with higher CTA risk score. This common set of lipids is composed of CE(16:0), CE(18:0), PC(38:2), 8 SM [SM(34:2), SM(38:2), SM(41:2), SM(41:1), SM(42:4), SM(42:3), SM(42:1), SM(43:3)], TG(52:1) and 6 PE [PE(34:0), PE(34:1), PE(34:2), PE(36:1), PE(36:2), PE(36:3)], and represents the lipidomics signature associating elevated plasma TG/HDL-C ratio with high CTA risk score in statin users.
Conclusion
In patients with stable CAD under statin treatment, a specific pattern of altered lipids, characterized by reduced plasma levels of cholesterol esters and sphingomyelins and increased levels of triacylglicerols and phosphatidylethanolamines, is associated with high TG/HDL-C ratio and high CTA score. This specific lipidomic signature identifies patients with higher residual cardiometabolic and coronary risk, not tackled by current lipid lowering therapy, unveiling possible new molecular targets of treatment.
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Affiliation(s)
| | - N Di Giorgi
- Institute of Clinical Physiology of CNR , Pisa , Italy
| | - E Michelucci
- Institute of Clinical Physiology of CNR , Pisa , Italy
| | - G Signore
- University of Pisa, Department of Biology, Biochemistry Unit , Pisa , Italy
| | - AJHA Scholte
- Leiden University Medical Center, Department of Cardiology , Leiden , Netherlands (The)
| | - J Knuuti
- Turku PET Centre , Turku , Finland
| | - RR Buechel
- University Hospital Zurich, Department of Nuclear Medicine, Cardiac Imaging , Zurich , Switzerland
| | - A Teresinska
- National Institute of Cardiology , Warsaw , Poland
| | - MN Pizzi
- University Hospital Vall d'Hebron, Department of Cardiology , Barcelona , Spain
| | - A Roque
- University Hospital Vall d'Hebron, Department of Radiology , Barcelona , Spain
| | - R Poddighe
- USL Toscana Northwest, Cardiologia , Viareggio , Italy
| | - O Parodi
- Fondazione Toscana Gabriele Monasterio , Pisa , Italy
| | - G Pelosi
- Institute of Clinical Physiology of CNR , Pisa , Italy
| | - D Neglia
- Fondazione Toscana Gabriele Monasterio , Pisa , Italy
| | - C Caselli
- Institute of Clinical Physiology of CNR , Pisa , Italy
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Erba PA, Sollini M, Zanca R, Cavinato L, Ragni A, Ten Hove D, Glaudemans AWJM, Pizzi MN, Roque A, Ieva F, Slart RHJA. [18F]FDG-PET/CT radiomics in patients suspected of infective endocarditis. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
AIM [18F]FDG-PET/CT is part of the diagnostic algorithm for IE diagnosis. Increased [18F]FDG uptake with focal and heterogenous pattern at valve, intravalvular or perivalvular at visual analysis is consistent with IE. Diffuse, homogeneous or low valvular [18F]FDG uptake make diagnosis more challenging. Semiquantitative parameters may be of value in such case of equivocal PET findings; however, they are still not validated in IE. In this study we aim to assess the value of [18F]FDG PET/CT radiomics in IE diagnosis. Further, we build a model for radiomics-based prediction of PET/CT findings, patient classification and stratification as well as prediction of the final diagnosis. Materials and Methods We evaluated a series of [18F]FDG PET/CT scans in 447 patients (M:F =284:163, mean age 67± 16yrs), with suspected IE (519 valves, NVE = 109, PVE = 410), studied in 3 different centers between January 2015- 2020. Clinical, surgical data, antimicrobial treatment, microbiology and biochemistry, imaging and the DUKE/2015 ESC classification were collected. PET/CT images were semiautomatically segmented (Advantage Workstation, GE) and texture features extracted by LIFEx software. For the analysis we used absolute correlation exclusion criteria and PCA based dimensionality reduction, MANOVA test and LR for multivariate testing. Prior to model building by Random Forest (80% training sets, 20% test), we applied covariance matrix for correlated feature removal and SMOTE for preprocessing the imbalanced dataset. Results MANOVA and LR showed a positive contribution of radiomics in predicting PET/CT results and IE diagnosis, with a different signature in IE-positive/IE-negative patients (80% in training, 70% in validation). Of interest, the signature of patients with equivocal PET/CT findings was similar to IE-negative signature. Clustering-based stratification identify in two groups, one with milder disease presenting weak or no [18F]FDG uptake and one with more severe disease. Our LR models with incremental complexity (Table 1 and 2) demonstrated that the richer the information fed into the model the higher the performances, reaching 90% of AUC. However, the performance of model M5 and M6 is almost equal, suggesting a limited contribution of radiomics in classifying IE. Conclusion [18F]FDG PET/CT radiomics provide a limited, yet positive, contribution in the classification of EI. Nevertheless, radiomics was fundamental in defining PET outcome, thus it could support visual imaging assessment in particular when equivocal [18F]FDG findings are present. Further steps focusing on refinement of the IE diagnostic criteria, on explainable analysis on positive/negative patients to be transferred in equivocal cases. Ultimately, the identification of radiomic signature would help to define thresholds to discriminate between mild infection and severe IE, in a risk score fashion. Abstract Table 1 Abstract Table 2
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Affiliation(s)
- PA Erba
- Azienda Ospedaliero Universitaria Pisana, Department of Translational Research and Advanced Technology in Medicine , Pisa, Italy
| | - M Sollini
- Humanitas Clinical and Research Center, Nuclear Medicine, Humanitas Clinical and Research,Department of Biomedical Sciences, Milan, Italy
| | - R Zanca
- Azienda Ospedaliero Universitaria Pisana, Department of Translational Research and Advanced Technology in Medicine , Pisa, Italy
| | - L Cavinato
- Milan Polytechnic, MOX – Modeling and Scientific Computing, Department of Mathematics, Politecnico di Milano, Milan, Italy
| | - A Ragni
- Milan Polytechnic, MOX – Modeling and Scientific Computing, Department of Mathematics, Politecnico di Milano, Milan, Italy
| | - D Ten Hove
- University Medical Center Groningen, Department of Nuclear Medicine and Molecular Imaging, Groningen, Netherlands (The)
| | - AWJM Glaudemans
- University Medical Center Groningen, Department of Nuclear Medicine and Molecular Imaging, Groningen, Netherlands (The)
| | - MN Pizzi
- University Hospital Vall d"Hebron, Department of Cardiology, Barcelona, Spain
| | - A Roque
- University Hospital Vall d"Hebron, Department of Radiology, Barcelona, Spain
| | - F Ieva
- Milan Polytechnic, MOX – Modeling and Scientific Computing, Department of Mathematics, Politecnico di Milano, Milan, Italy
| | - RHJA Slart
- University Medical Center Groningen, Department of Nuclear Medicine and Molecular Imaging, Groningen, Netherlands (The)
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7
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Roque A, Pizzi MN, Fernandez-Hidalgo N, Romero-Farina G, Burcet G, Reyes JL, Cuellar-Calabria H, Aguade-Bruix S. The valve uptake index: a new measure in [18F]FDG PET/CT for the diagnosis of prosthetic valve endocarditis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Diagnosis of PVE by PET/CTA is based on visual and quantitative evaluation of morpho-metabolic features. The FDG uptake pattern is a main diagnostic criterion, but can be visually unclear and susceptible to subjectivity. The valve uptake index (VUI) is a new measure designed to provide a more objective indication of the distribution of metabolic activity.
Purpose
To validate the diagnostic accuracy of the valve uptake index (VUI) (SUVmax-SUVmean)/SUVmax, in patients with suspicion of prosthetic valve endocarditis (PVE). To establish a cut-off value that allows diagnosis of infection. Finally, to determine the incremental value of adding the VUI to the classic parameters for the diagnostis of PVE by PET/CT.
Methods
Retrospective analysis of 122 patients, with a conclusive diagnosis of definite or rejected PVE and who had undergone a cardiac PET/CTA scan. We measured the VUI and recorded the SUVmax, SUVratio, uptake pattern and the presence of endocarditis-related anatomic lesions. The diagnostic accuracy of these parameters was calculated.
Results
The VUI values were 0.54±0.1 vs. 0.36±0.08 in the definite PVE group vs. the rejected group, respectively (mean±SD; p<0.001). A cut-off value of VUI>0.45 showed a sensitivity, specificity and diagnostic accuracy for PVE of 85%, 90.3% and 87.4%, and significantly increased diagnostic ability for confirming endocarditis when combined with the standard diagnostic criteria.
Conclusions
The VUI had good diagnostic accuracy for PVE. The diagnostic power of currently used morphometabolic parametersis significantly increased by the addition of the VUI. Integration of the VUI in the diagnostic algorithm may clarify doubtful cases, and improve the diagnostic yield of PET/CTA.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- A Roque
- University Hospital Vall d'Hebron, Radiology, Barcelona, Spain
| | - M N Pizzi
- University Hospital Vall d'Hebron, Cardiology, Barcelona, Spain
| | | | - G Romero-Farina
- University Hospital Vall d'Hebron, Infectious Diseases, Barcelona, Spain
| | - G Burcet
- University Hospital Vall d'Hebron, Radiology, Barcelona, Spain
| | - J L Reyes
- University Hospital Vall d'Hebron, Radiology, Barcelona, Spain
| | | | - S Aguade-Bruix
- University Hospital Vall d'Hebron, Nuclear Medicine, Barcelona, Spain
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8
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El Mahdiui M, Smit J, van Rosendael A., Neglia D, Knuuti J, Saras A, Buechel R, Teresinska A, Pizzi M, Poddighe R, Mertens B, Caselli C, Rocchiccioli S, Parodi O, Pelosi W, Scholte A. Sex Differences In The Natural History Of Coronary Plaque Changes By Serial Coronary Computed Tomography Angiography. J Cardiovasc Comput Tomogr 2020. [DOI: 10.1016/j.jcct.2020.06.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Caselli C, Rocchiccioli S, Rosendael A, Buechel R, Teresinska A, Pizzi MN, Smith JM, Poddighe R, Campolo J, Vozzi F, Knuuti J, Pelosi G, Parodi O, Scholte A, Neglia D. P6167Low leptin plasma levels are associated with progression of coronary atherosclerosis in patients with stable coronary artery disease from the SMARTool Study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Leptin is an adipokine involved in energy homeostasis and has been related with established vascular risk factors. However, studies on the association of leptin plasma levels with coronary artery disease (CAD) have yielded conflicting results.
Purpose
Aim of the present study was to evaluate the association between leptin plasma levels and presence, severity and progression of coronary atherosclerosis in patients with suspected stable CAD.
Methods
In a cohort of 257 patients with symptoms of stable CAD enrolled in the SMARTool study, coronary computed tomography angiography (CTA), plasma leptin levels and clinical and bio-humoral CAD risk profile (including glucose, lipid and inflammation variables) were obtained at enrolment and after 6±1yrs of follow-up. Sixty-four patients were revascularized and the remaining 193 represent the population for the present study. CTA findings were categorised as no-minimal CAD (<30% stenosis), non-obstructive CAD (30%-50% stenosis) and obstructive CAD (≥50% stenosis in at least one major coronary vessel). A CTA risk score (based on plaque extent, severity, composition, and location) was calculated at baseline and at follow-up to assess coronary atherosclerotic burden and its progression (Δ CTA score≥5).
Results
CTA findings showed obstructive CAD in 11% of patients at baseline and in 15% at follow-up (p<0.0001). CTA risk score, was 8.03±7.80 at baseline and increased to 10.33±8.17 at follow-up (p<0.0001) with CAD progression in 20% of patients. Leptin plasma levels were inversely related with CTA findings both at baseline and follow-up (Figure). In a Cox model, baseline plasma leptin was an independent predictor of CAD progression, after adjustment for clinical risk factors, biomarkers, and treatment (HR 0.572, 95% CI 0.393–0.834, P=0.0037).
Figure 1
Conclusion
Plasma leptin is inversely associated with coronary atherosclerotic burden and disease progression in patients with stable CAD. This association is independent of known factors affecting leptin levels. These results could prompt further investigations on the pathophysiological mechanisms of this association.
Acknowledgement/Funding
EU H2020 research and innovation program under grant agreement No 689068
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Affiliation(s)
- C Caselli
- Institute of Clinical Physiology (IFC), Pisa, Italy
| | | | - A Rosendael
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - R Buechel
- University of Zurich, Zurich, Switzerland
| | | | - M N Pizzi
- University Hospital Vall d'Hebron, Barcelona, Spain
| | - J M Smith
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - R Poddighe
- Versilia Hospital, Lido Di Camaiore, Italy
| | - J Campolo
- CNR Institute of Clinical Physiology, Milan, Italy
| | - F Vozzi
- Institute of Clinical Physiology (IFC), Pisa, Italy
| | - J Knuuti
- University of Turku, Turku, Finland
| | - G Pelosi
- Institute of Clinical Physiology (IFC), Pisa, Italy
| | - O Parodi
- Institute of Clinical Physiology (IFC), Pisa, Italy
| | - A Scholte
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - D Neglia
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
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Pizzi MN, Fernandez-Hidalgo N, Cuellar-Calabria H, Aguade-Bruix S, Castell-Conesa J, Escobar M, Roque R. 194Initial assessment of the clinical impact and confirmation of the diagnostic ability of the 18F-FDG-PET/CTA prosthetic valve endocarditis. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez144.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M N Pizzi
- Hospital Vall d"Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | - N Fernandez-Hidalgo
- University Hospital Vall d"Hebron, Infectious Diseases Department, Barcelona, Spain
| | - H Cuellar-Calabria
- University Hospital Vall d"Hebron, Radiology Department, Barcelona, Spain
| | - S Aguade-Bruix
- Universitary Hospital Vall d´Hebron, Nuclear Medicine Department, Barcelona, Spain
| | - J Castell-Conesa
- Universitary Hospital Vall d´Hebron, Nuclear Medicine Department, Barcelona, Spain
| | - M Escobar
- University Hospital Vall d"Hebron, Radiology Department, Barcelona, Spain
| | - R Roque
- University Hospital Vall d"Hebron, Radiology Department, Barcelona, Spain
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Carrillo Villamizar EM, Espinet Coll C, Pizzi MN, Romero-Farina G, Calabuig A, Aguade-Bruix S. P316How do planar scatter free image of 123I-mIBG affects the heart/mediastinum index. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez148.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - M N Pizzi
- Hospital Vall d"Hebron, Barcelona, Spain
| | | | - A Calabuig
- Hospital Vall d"Hebron, Barcelona, Spain
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Aguade-Bruix S, Blanco Cano JS, Pizzi MN, Salcedo Pujantell MT, Roque Perez A, Espinet Coll C, Castell-Conesa J. 196Comparison of two preparation strategies for 18F-FDG myocardial uptake suppression in patients with suspected endocarditis. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez144.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | - M N Pizzi
- Hospital Vall d"Hebron, Barcelona, Spain
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Espinet Coll C, Carrillo Villamizar EM, Pizzi MN, Romero-Farina G, Calabuig A, Aguade-Bruix S. P317How attenuation correction affects the interpretation of 123I-mIBG SPECT images of cardiac sympathetic innervation. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez148.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | - M N Pizzi
- Hospital Vall d"Hebron, Barcelona, Spain
| | | | - A Calabuig
- Hospital Vall d"Hebron, Barcelona, Spain
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Roque A, Pizzi MN, Fernandez-Hidalgo N, Cuellar-Calabria H, Rios R, Ferreria N, Almirante B, Castell-Conesa J, Escobar M, Aguade-Bruix S. 3118F-FDG-PET/CTA of prosthetic heart valves: Postsurgical inflammatory patterns and its temporal evolution. Can we question the 3-month limit of the current guidelines? Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez142.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Roque
- University Hospital Vall d"Hebron, Radiology, Barcelona, Spain
| | - M N Pizzi
- University Hospital Vall d"Hebron, Cardiology, Barcelona, Spain
| | | | | | - R Rios
- University Hospital Vall d"Hebron, Cardiac Surgery, Barcelona, Spain
| | - N Ferreria
- University Hospital Vall d"Hebron, Cardiology, Barcelona, Spain
| | - B Almirante
- University Hospital Vall d"Hebron, Infectious Diseases, Barcelona, Spain
| | - J Castell-Conesa
- University Hospital Vall d"Hebron, Nuclear Medicine, Barcelona, Spain
| | - M Escobar
- University Hospital Vall d"Hebron, Radiology, Barcelona, Spain
| | - S Aguade-Bruix
- University Hospital Vall d"Hebron, Nuclear Medicine, Barcelona, Spain
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Aguade-Bruix S, Espinet Coll C, Carrillo Villamizar EM, Pizzi MN, Romero-Farina G. P165Systolic right ventricle dysfunction in oncological patients treated with cardiotoxic drugs. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez147.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | | | - M N Pizzi
- Hospital Vall d"Hebron, Barcelona, Spain
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16
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Roque A, Pizzi MN, Fernandez-Hidalgo N, Cuellar-Calabria H, Rios R, Ferreira N, Sambola A, Almirante B, Garcia-Dorado D, Castell J, Escobar M, Tornos P, Aguade-Bruix S. 524918F-FDG-PET/CTA of prosthetic cardiac valves: postsurgical inflammatory patterns and its temporal evolution. Can we question the 3-month limit of the current guidelines? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.5249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Roque
- University Hospital Vall d'Hebron, Radiology, Barcelona, Spain
| | - M N Pizzi
- University Hospital Vall d'Hebron, Cardiology, Barcelona, Spain
| | | | | | - R Rios
- University Hospital Vall d'Hebron, Cardiac Surgery, Barcelona, Spain
| | - N Ferreira
- University Hospital Vall d'Hebron, Cardiology, Barcelona, Spain
| | - A Sambola
- University Hospital Vall d'Hebron, Cardiology, Barcelona, Spain
| | - B Almirante
- University Hospital Vall d'Hebron, Infectious Diseases, Barcelona, Spain
| | - D Garcia-Dorado
- University Hospital Vall d'Hebron, Cardiology, Barcelona, Spain
| | - J Castell
- University Hospital Vall d'Hebron, Nuclear Medicine, Barcelona, Spain
| | - M Escobar
- University Hospital Vall d'Hebron, Radiology, Barcelona, Spain
| | - P Tornos
- University Hospital Vall d'Hebron, Cardiology, Barcelona, Spain
| | - S Aguade-Bruix
- University Hospital Vall d'Hebron, Nuclear Medicine, Barcelona, Spain
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Pizzi MN, Fernandez-Hidalgo N, Cuellar-Calabria H, Gonzalez-Alujas MT, Ferreira-Gonzalez I, Maisterra-Santos O, Rios R, Sambolla-Ayala A, Garcia-Dorado D, Almirante B, Tornos P, Aguade-Bruix S, Castell-Conesa J, Roque A. P2274First assessment of the clinical impact and confirmation of the diagnostic ability of the 18F-FDG-PET/CTA prosthetic valve endocarditis. New data supports initial results. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M N Pizzi
- Hospital Vall d'Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | - N Fernandez-Hidalgo
- University Hospital Vall d'Hebron, Infectious Diseases Department, Barcelona, Spain
| | - H Cuellar-Calabria
- University Hospital Vall d'Hebron, Radiology Department, Barcelona, Spain
| | - M T Gonzalez-Alujas
- Hospital Vall d'Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | - I Ferreira-Gonzalez
- Hospital Vall d'Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | | | - R Rios
- University Hospital Vall d'Hebron, Cardiovascular Surgery, Barcelona, Spain
| | - A Sambolla-Ayala
- Hospital Vall d'Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | - D Garcia-Dorado
- Hospital Vall d'Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | - B Almirante
- University Hospital Vall d'Hebron, Infectious Diseases Department, Barcelona, Spain
| | - P Tornos
- Hospital Vall d'Hebron, Cardiology Department, Epidemiology Unit, Barcelona, Spain
| | - S Aguade-Bruix
- Universitary Hospital Vall d'Hebron, Nuclear Medicine Department, Barcelona, Spain
| | - J Castell-Conesa
- Universitary Hospital Vall d'Hebron, Nuclear Medicine Department, Barcelona, Spain
| | - A Roque
- University Hospital Vall d'Hebron, Radiology Department, Barcelona, Spain
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Smit JM, Van Rosendael AR, Barbon F, Neglia D, Knuuti J, Buechel R, Teresinska A, Pizzi MN, Poddighe R, Caselli C, Rocchiccioli S, Parodi O, Pelosi G, Scholte AJ. 3009Quantitative CTA analysis of coronary plaque progression in SMARTool clinical study: the association between baseline clinical parameters and plaque progression. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J M Smit
- Leiden University Medical Center, Cardiology, Leiden, Netherlands
| | | | | | - D Neglia
- Gabriele Monasterio Foundation, Pisa, Italy
| | - J Knuuti
- Turku University Hospital, Turku, Finland
| | - R Buechel
- University of Zurich, Zurich, Switzerland
| | | | - M N Pizzi
- University Hospital Vall d'Hebron, Department of Cardiology, Barcelona, Spain
| | - R Poddighe
- ASL12 U.O.C. Cardiologia, Viareggio, Italy
| | - C Caselli
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | | | - O Parodi
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | - G Pelosi
- Institute of Clinical Physiology, CNR, Pisa, Italy
| | - A J Scholte
- Leiden University Medical Center, Cardiology, Leiden, Netherlands
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Ciscato F, Filadi R, Masgras I, Pizzi M, Marin O, Frezzato F, Trentin L, Pizzo P, Bernardi P, Rasola A. PO-032 Displacement of hexokinase 2 from mitochondria induces mitochondrial Ca2 +overload and caspase-independent cell death in cancer cells. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Aguadé Bruix S, Roque Pérez A, Cuéllar Calabria H, Pizzi MN. Cardiac 18F-FDG PET/CT procedure for the diagnosis of prosthetic endocarditis and intracardiac devices. Rev Esp Med Nucl Imagen Mol 2018; 37:163-171. [PMID: 29496402 DOI: 10.1016/j.remn.2018.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 01/11/2018] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 11/17/2022]
Abstract
Infective endocarditis (IE) is a serious condition with a poor prognosis, its mortality unchanged significantly despite diagnostic and therapeutic advances in the last 30years. The diagnostic ability of the modified Duke criteria in prosthetic endocarditis and/or devices does not exceed 50%, so new tools are necessary for the diagnosis of this entity in this context. The 18F-FDG PET/CTA combines a highly sensitive technique to detect inflammatory-infectious activity with a technique with high anatomical resolution to assess the structural lesions associated with endocarditis. With a diagnostic sensitivity between 91-97%, this hybrid technique has become a useful diagnostic tool for patients with prosthetic valves or devices and suspicion of IE, becoming a major criterion in the diagnostic algorithm of current guidelines. This excellent diagnostic ability depends directly on the quality of the obtained exploration and the knowledge at the time of interpreting the images. The aim of this review is to describe and standardize the methodology of cardiac 18F-FDG PET/CTA in the diagnosis of endocarditis in prosthetic valves and intracardiac devices, with special emphasis on the particularities of the patient's preparation, the PET and CT acquisition procedures, and the subsequent imaging postprocessing and interpretation.
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Affiliation(s)
- S Aguadé Bruix
- Servicio de Medicina Nuclear, Hospital Universitari Vall d'Hebron, Barcelona, España; VHIR: Vall d'Hebron Institut de Recerca, Barcelona, España; Universitat Autònoma de Barcelona, Barcelona, España.
| | - A Roque Pérez
- Servicio de Radiología, Hospital Universitari Vall d'Hebron, Barcelona, España; IDI: Institut de Diagnòstic per la Imatge, Barcelona, España; Universitat Autònoma de Barcelona, Barcelona, España
| | - H Cuéllar Calabria
- Servicio de Radiología, Hospital Universitari Vall d'Hebron, Barcelona, España; IDI: Institut de Diagnòstic per la Imatge, Barcelona, España; Universitat Autònoma de Barcelona, Barcelona, España
| | - M N Pizzi
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Barcelona, España; VHIR: Vall d'Hebron Institut de Recerca, Barcelona, España; Universitat Autònoma de Barcelona, Barcelona, España
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Abstract
PURPOSE OF REVIEW This article reviews the current imaging role of 18F-fluordeoxyglucose positron emission computed tomography (18F-FDG-PET/CT) combined with cardiac CT angiography (CTA) in infective endocarditis and discusses the strengths and limitations of this technique. RECENT FINDINGS The diagnosis of infective endocarditis affecting prosthetic valves and intracardiac devices is challenging because echocardiography and, therefore, the modified Duke criteria have well-recognized limitations in this clinical scenario. The high sensitivity of 18F-FDG-PET/CT for the detection of infection associated with the accurate definition of structural damage by gated cardiac CTA in a combined technique (PET/CTA) has provided a significant increase in diagnostic sensitivity for the detection of IE. PET/CTA has proven to be a useful diagnostic tool in patients with suspected infective endocarditis. The additional information provided by this technique improves diagnostic performance in prosthetic valve endocarditis when it is used in combination with the Duke criteria. The findings obtained in PET/CTA studies have been included as a major criterion in the recently updated diagnostic algorithm in infective endocarditis guidelines.
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Affiliation(s)
- A Roque
- Department of Radiology, Hospital Universitari Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain. .,IDI (Institut de Diagnòstic per la Imatge), Barcelona, Spain. .,Universitat Autònoma de Barcelona, Bellaterra, Spain.
| | - M N Pizzi
- Department of Cardiology, Hospital Universitari Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain.,Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - H Cuéllar-Calàbria
- Department of Radiology, Hospital Universitari Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain.,IDI (Institut de Diagnòstic per la Imatge), Barcelona, Spain.,Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - S Aguadé-Bruix
- Department of Nuclear Medicine, Hospital Universitari Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain.,Universitat Autònoma de Barcelona, Bellaterra, Spain
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Sirchia G, Almini D, Bellobuono A, Giovanetti A, Marconi M, Mercuriali F, Mozzi F, Parravicini A, Pizzi M, Zanuso F. Prevalence of Hepatitis C Virus Antibodies in Italian Blood Donors. Vox Sang 2017. [DOI: 10.1159/000461154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Taniguchi Y, Takahashi Y, Toba T, Yamada S, Yokoi K, Kobayashi S, Okajima S, Shimane A, Kawai H, Yasaka Y, Smanio P, Oliveira MA, Machado L, Cestari P, Medeiros E, Fukuzawa S, Okino S, Ikeda A, Maekawa J, Ichikawa S, Kuroiwa N, Yamanaka K, Igarashi A, Inagaki M, Patel K, Mahan M, Ananthasubramaniam K, Mouden M, Yokota S, Ottervanger J, Knollema S, Timmer J, Jager P, Padron K, Peix A, Cabrera L, Pena Bofill V, Valera D, Rodriguez Nande L, Carrillo Hernandez R, Mena Esnard E, Fernandez Columbie Y, Bertella E, Baggiano A, Mushtaq S, Segurini C, Loguercio M, Conte E, Beltrama V, Petulla' M, Andreini D, Pontone G, Guzic Salobir B, Dolenc Novak M, Jug B, Kacjan B, Novak Z, Vrtovec M, Mushtaq S, Pontone G, Bertella E, Conte E, Segurini C, Volpato V, Baggiano A, Formenti A, Pepi M, Andreini D, Ajanovic R, Husic-Selimovic A, Zujovic-Ajanovic A, Mlynarski R, Mlynarska A, Golba K, Sosnowski M, Ameta D, Goyal M, Kumar D, Chandra S, Sethi R, Puri A, Dwivedi SK, Narain VS, Saran RK, Nekolla S, Rischpler C, Nicolosi S, Langwieser N, Dirschinger R, Laugwitz K, Schwaiger M, Goral JL, Napoli J, Forcada P, Zucchiatti N, Damico A, Damico A, Olivieri D, Lavorato M, Dubesarsky E, Montana O, Salgado C, Jimenez-Heffernan A, Ramos-Font C, Lopez-Martin J, Sanchez De Mora E, Lopez-Aguilar R, Manovel A, Martinez A, Rivera F, Soriano E, Maroz-Vadalazhskaya N, Trisvetova E, Vrublevskaya O, Abazid R, Kattea M, Saqqah H, Sayed S, Smettei O, Winther S, Svensson M, Birn H, Jorgensen H, Botker H, Ivarsen P, Bottcher M, Maaniitty T, Stenstrom I, Saraste A, Pikkarainen E, Uusitalo V, Ukkonen H, Kajander S, Bax J, Knuuti J, Choi T, Park H, Lee C, Lee J, Seo Y, Cho Y, Hwang E, Cho D, Sanchez Enrique C, Ferrera C, Olmos C, Jimenez - Ballve A, Perez - Castejon MJ, Fernandez C, Vivas D, Vilacosta I, Nagamachi S, Onizuka H, Nishii R, Mizutani Y, Kitamura K, Lo Presti M, Polizzi V, Pino P, Luzi G, Bellavia D, Fiorilli R, Madeo A, Malouf J, Buffa V, Musumeci F, Rosales S, Puente A, Zafrir N, Shochat T, Mats A, Solodky A, Kornowski R, Lorber A, Boemio A, Pellegrino T, Paolillo S, Piscopo V, Carotenuto R, Russo B, Pellegrino S, De Matteis G, Perrone-Filardi P, Cuocolo A, Piscopo V, Pellegrino T, Boemio A, Carotenuto R, Russo B, Pellegrino S, De Matteis G, Petretta M, Cuocolo A, Amirov N, Ibatullin M, Sadykov A A, Saifullina G, Ruano R, Diego Dominguez M, Rodriguez Gabella T, Diego Nieto A, Diaz Gonzalez L, Garcia-Talavera J, Sanchez Fernandez P, Leen A, Al Younis I, Zandbergen-Harlaar S, Verberne H, Gimelli A, Veltman C, Wolterbeek R, Bax J, Scholte A, Mooney D, Rosenblatt J, Dunn T, Vasaiwala S, Okuda K, Nakajima K, Nystrom K, Edenbrandt L, Matsuo S, Wakabayashi H, Hashimoto M, Kinuya S, Iric-Cupic V, Milanov S, Davidovic G, Zdravkovic V, Ashikaga K, Yoneyama K, Akashi Y, Shugushev Z, Maximkin D, Chepurnoy A, Volkova O, Baranovich V, Faibushevich A, El Tahlawi M, Elmurr A, Alzubaidi S, Sakrana A, Gouda M, El Tahlawi R, Sellem A, Melki S, Elajmi W, Hammami H, Okano M, Kato T, Kimura M, Funasako M, Nakane E, Miyamoto S, Izumi T, Haruna T, Inoko M, Massardo T, Swett E, Fernandez R, Vera V, Zhindon J, Fernandez R, Swett E, Vera V, Zhindon J, Alay R, Massardo T, Ohshima S, Nishio M, Kojima A, Tamai S, Kobayashi T, Murohara T, Burrell S, Van Rosendael A, Van Den Hoogen I, De Graaf M, Roelofs J, Kroft L, Bax J, Scholte A, Rjabceva I, Krumina G, Kalvelis A, Chanakhchyan F, Vakhromeeva M, Kankiya E, Koppes J, Knol R, Wondergem M, Van Der Ploeg T, Van Der Zant F, Lazarenko SV, Bruin VS, Pan XB, Declerck JM, Van Der Zant FM, Knol RJJ, Juarez-Orozco LE, Alexanderson E, Slart R, Tio R, Dierckx R, Zeebregts C, Boersma H, Hillege H, Martinez-Aguilar M, Jordan-Rios A, Christensen TE, Ahtarovski KA, Bang LE, Holmvang L, Soeholm H, Ghotbi AA, Andersson H, Ihlemann N, Kjaer A, Hasbak P, Gulya M, Lishmanov YB, Zavadovskii K, Lebedev D, Stahle M, Hellberg S, Liljenback H, Virta J, Metsala O, Yla-Herttuala S, Saukko P, Knuuti J, Saraste A, Roivainen A, Thackeray J, Wang Y, Bankstahl J, Wollert K, Bengel F, Saushkina Y, Evtushenko V, Minin S, Efimova I, Evtushenko A, Smishlyaev K, Lishmanov Y, Maslov L, Okuda K, Nakajima K, Kirihara Y, Sugino S, Matsuo S, Taki J, Hashimoto M, Kinuya S, Ahmadian A, Berman J, Govender P, Ruberg F, Miller E, Piriou N, Pallardy A, Valette F, Cahouch Z, Mathieu C, Warin-Fresse K, Gueffet J, Serfaty J, Trochu J, Kraeber-Bodere F, Van Dijk J, Mouden M, Ottervanger J, Van Dalen J, Jager P, Zafrir N, Ofrk H, Vaturi M, Shochat T, Hassid Y, Belzer D, Sagie A, Kornowski R, Kaminek M, Metelkova I, Budikova M, Koranda P, Henzlova L, Sovova E, Kincl V, Drozdova A, Jordan M, Shahid F, Teoh Y, Thamen R, Hara N, Onoguchi M, Hojyo O, Kawaguchi Y, Murai M, Udaka F, Matsuzawa Y, Bulugahapitiya DS, Avison M, Martin J, Liu YH, Wu J, Liu C, Sinusas A, Daou D, Sabbah R, Bouladhour H, Coaguila C, Aguade-Bruix S, Pizzi M, Romero-Farina G, Candell-Riera J, Castell-Conesa J, Patchett N, Sverdlov A, Miller E, Daou D, Sabbah R, Bouladhour H, Coaguila C, Smettei O, Abazid R, Boulaamayl El Fatemi S, Sallam L, Snipelisky D, Park J, Ray J, Shapiro B, Kostkiewicz M, Szot W, Holcman K, Lesniak-Sobelga A, Podolec P, Clerc O, Possner M, Liga R, Vontobel J, Mikulicic F, Graeni C, Benz D, Herzog B, Gaemperli O, Kaufmann P. Poster Session 1: Sunday 3 May 2015, 08:30-18:00 * Room: Poster Area. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Bouyoucef SE, Uusitalo V, Kamperidis V, De Graaf M, Maaniitty T, Stenstrom I, Broersen A, Scholte A, Saraste A, Bax J, Knuuti J, Furuhashi T, Moroi M, Awaya T, Masai H, Minakawa M, Kunimasa T, Fukuda H, Sugi K, Berezin A, Kremzer A, Clerc O, Kaufmann B, Possner M, Liga R, Vontobel J, Mikulicic F, Graeni C, Benz D, Kaufmann P, Buechel R, Ferreira M, Cunha M, Albuquerque A, Ramos D, Costa G, Lima J, Pego M, Peix A, Cisneros L, Cabrera L, Padron K, Rodriguez L, Heres F, Carrillo R, Mena E, Fernandez Y, Huizing E, Van Dijk J, Van Dalen J, Timmer J, Ottervanger J, Slump C, Jager P, Venuraju S, Jeevarethinam A, Yerramasu A, Atwal S, Mehta V, Lahiri A, Arjonilla Lopez A, Calero Rueda MJ, Gallardo G, Fernandez-Cuadrado J, Hernandez Aceituno D, Sanchez Hernandez J, Yoshida H, Mizukami A, Matsumura A, Smettei O, Abazid R, Sayed S, Mlynarska A, Mlynarski R, Golba K, Sosnowski M, Winther S, Svensson M, Jorgensen H, Bouchelouche K, Gormsen L, Holm N, Botker H, Ivarsen P, Bottcher M, Cortes CM, Aramayo G E, Daicz M, Casuscelli J, Alaguibe E, Neira Sepulveda A, Cerda M, Ganum G, Embon M, Vigne J, Enilorac B, Lebasnier A, Valancogne L, Peyronnet D, Manrique A, Agostini D, Menendez D, Rajpal S, Kocherla C, Acharya M, Reddy P, Sazonova I, Ilushenkova Y, Batalov R, Rogovskaya Y, Lishmanov Y, Popov S, Varlamova N, Prado Diaz S, Jimenez Rubio C, Gemma D, Refoyo Salicio E, Valbuena Lopez S, Moreno Yanguela M, Torres M, Fernandez-Velilla M, Lopez-Sendon J, Guzman Martinez G, Puente A, Rosales S, Martinez C, Cabada M, Melendez G, Ferreira R, Gonzaga A, Santos J, Vijayan S, Smith S, Smith M, Muthusamy R, Takeishi Y, Oikawa M, Goral JL, Napoli J, Montana O, Damico A, Quiroz M, Damico A, Forcada P, Schmidberg J, Zucchiatti N, Olivieri D, Jeevarethinam A, Venuraju S, Dumo A, Ruano S, Rakhit R, Davar J, Nair D, Cohen M, Darko D, Lahiri A, Yokota S, Ottervanger J, Maas A, Mouden M, Timmer J, Knollema S, Jager P, Sanja Mazic S, Lazovic B, Marina Djelic M, Jelena Suzic Lazic J, Tijana Acimovic T, Milica Deleva M, Vesnina Z, Zafrir N, Bental T, Mats I, Solodky A, Gutstein A, Hasid Y, Belzer D, Kornowski R, Ben Said R, Ben Mansour N, Ibn Haj Amor H, Chourabi C, Hagui A, Fehri W, Hawala H, Shugushev Z, Patrikeev A, Maximkin D, Chepurnoy A, Kallianpur V, Mambetov A, Dokshokov G, Teresinska A, Wozniak O, Maciag A, Wnuk J, Dabrowski A, Czerwiec A, Jezierski J, Biernacka K, Robinson J, Prosser J, Cheung G, Allan S, Mcmaster G, Reid S, Tarbuck A, Martin W, Queiroz R, Falcao A, Giorgi M, Imada R, Nogueira S, Chalela W, Kalil Filho R, Meneghetti W, Matveev V, Bubyenov A, Podzolkov V, Shugushev Z, Maximkin D, Chepurnoy A, Baranovich V, Faibushevich A, Kolzhecova Y, Volkova O, Kallianpur V, Peix A, Cabrera L, Padron K, Rodriguez L, Fernandez J, Lopez G, Mena E, Fernandez Y, Dondi M, Paez D, Butcher C, Reyes E, Al-Housni M, Green R, Santiago H, Ghiotto F, Hinton-Taylor S, Pottle A, Mason M, Underwood S, Casans Tormo I, Diaz-Exposito R, Plancha-Burguera E, Elsaban K, Alsakhri H, Yoshinaga K, Ochi N, Tomiyama Y, Katoh C, Inoue M, Nishida M, Suzuki E, Manabe O, Ito Y, Tamaki N, Tahilyani A, Jafary F, Ho Hee Hwa H, Ozdemir S, Kirilmaz B, Barutcu A, Tan Y, Celik F, Sakgoz S, Cabada Gamboa M, Puente Barragan A, Morales Vitorino N, Medina Servin M, Hindorf C, Akil S, Hedeer F, Jogi J, Engblom H, Martire V, Pis Diez E, Martire M, Portillo D, Hoff C, Balche A, Majgaard J, Tolbod L, Harms H, Bouchelouche K, Soerensen J, Froekiaer J, Gormsen L, Nudi F, Neri G, Procaccini E, Pinto A, Vetere M, Biondi-Zoccai G, Falcao A, Chalela W, Giorgi M, Imada R, Soares J, Do Val R, Oliveira M, Kalil Filho R, Meneghetti J, Tekabe Y, Anthony T, Li Q, Schmidt A, Johnson L, Groenman M, Tarkia M, Kakela M, Halonen P, Kiviniemi T, Pietila M, Yla-Herttuala S, Knuuti J, Roivainen A, Saraste A, Nekolla S, Swirzek S, Higuchi T, Reder S, Schachoff S, Bschorner M, Laitinen I, Robinson S, Yousefi B, Schwaiger M, Kero T, Lindsjo L, Antoni G, Westermark P, Carlson K, Wikstrom G, Sorensen J, Lubberink M, Rouzet F, Cognet T, Guedj K, Morvan M, El Shoukr F, Louedec L, Choqueux C, Nicoletti A, Le Guludec D, Jimenez-Heffernan A, Munoz-Beamud F, Sanchez De Mora E, Borrachero C, Salgado C, Ramos-Font C, Lopez-Martin J, Hidalgo M, Lopez-Aguilar R, Soriano E, Okizaki A, Nakayama M, Ishitoya S, Sato J, Takahashi K, Burchert I, Caobelli F, Wollenweber T, Nierada M, Fulsche J, Dieckmann C, Bengel F, Shuaib S, Mahlum D, Port S, Gemma D, Refoyo E, Cuesta E, Guzman G, Lopez T, Valbuena S, Fernandez-Velilla M, Del Prado S, Moreno M, Lopez-Sendon J, Harbinson M, Donnelly L, Einstein AJ, Johnson LL, Deluca AJ, Kontak AC, Groves DW, Stant J, Pozniakoff T, Cheng B, Rabbani LE, Bokhari S, Caobelli F, Schuetze C, Nierada M, Fulsche J, Dieckmann C, Bengel F, Aguade-Bruix S, Pizzi M, Romero-Farina G, Terricabras M, Villasboas D, Castell-Conesa J, Candell-Riera J, Brunner S, Gross L, Todica A, Lehner S, Di Palo A, Niccoli Asabella A, Magarelli C, Notaristefano A, Ferrari C, Rubini G, Sellem A, Melki S, Elajmi W, Hammami H, Ziadi M, Montero J, Ameriso J, Villavicencio R, Benito Gonzalez TF, Mayorga Bajo A, Gutierrez Caro R, Rodriguez Santamarta M, Alvarez Roy L, Martinez Paz E, Barinaga Martin C, Martin Fernandez J, Alonso Rodriguez D, Iglesias Garriz I, Gemma D, Refoyo E, Cuesta E, Guzman G, Valbuena S, Rosillo S, Del Prado S, Torres M, Moreno M, Lopez-Sendon J, Taleb S, Cherkaoui Salhi G, Regbaoui Y, Ait Idir M, Guensi A, Puente A, Rosales S, Martinez C, Cabada M, Benito Gonzalez TF, Mayorga Bajo A, Gutierrez Caro R, Rodriguez Santamarta M, Alvarez Roy L, Martinez Paz E, Martin Lopez CE, Castano Ruiz M, Martin Fernandez J, Iglesias Garriz I. Poster Session 2: Monday 4 May 2015, 08:00-18:00 * Room: Poster Area. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pizzi MN, Aguadé-Bruix S, Roque A, Cuéllar-Calabria H, Romero-Farina G, García del Blanco B, Castell-Conesa J, García-Dorado D, Candell-Riera J. [SPECT, coronary angio-CT, invasive coronary angiography and fusion images in stable coronary disease]. Rev Esp Med Nucl Imagen Mol 2015; 34:173-80. [PMID: 25555322 DOI: 10.1016/j.remn.2014.11.004] [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: 09/04/2014] [Revised: 11/18/2014] [Accepted: 11/19/2014] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To evaluate the usefulness of the information obtained with SPECT, coronary angio-CT and fusion images, in patients with stable ischemic disease who need invasive coronary angiography (IA). MATERIAL AND METHODS Forty-six patients (65.98±8.3 years) with coronary disease were prospectively included. The fusion images generated after undergoing IA were used to evaluate the performance of these techniques in the diagnosis of multi-vessel coronary disease, the detection of the culprit vessel and the therapeutic management of these patients. RESULTS In the IA, 29 of the 46 patients (63%) had multi-vessel disease. SPECT could detect it in 48.2% and coronary angio-CT could detect it in 89.6%. Concordance between coronary angio-CT and IA in the diagnosis of the culprit vessel was 77% (kappa 0.6), and between SPECT and IA it was 73% (kappa 0.56). Although fusion images could have been obtained prior to IA, they would not have changed the therapeutic approach derived from SPECT and IA. CONCLUSIONS Coronary angio-CT has a high ability for the diagnosis of multi-vessel disease and the culprit lesion, and SPECT is a good functional complement of the IA in the detection of the most ischemic territory. However, the performance of fusion images in patients with stable ischemic disease, who have undergone a SPECT as the first non-invasive study and need IA, does not seem indicated because they would not have changed the therapeutic management derived from SPECT and IA information.
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Affiliation(s)
- M N Pizzi
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España.
| | - S Aguadé-Bruix
- Servicio de Medicina Nuclear, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - A Roque
- Servicio de Radiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - H Cuéllar-Calabria
- Servicio de Radiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - G Romero-Farina
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - B García del Blanco
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - J Castell-Conesa
- Servicio de Medicina Nuclear, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - D García-Dorado
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
| | - J Candell-Riera
- Servicio de Cardiología, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autónoma de Barcelona, Barcelona, España
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Mango D, Barbato G, Piccirilli S, Panico MB, Feligioni M, Schepisi C, Graziani M, Porrini V, Benarese M, Lanzillotta A, Pizzi M, Pieraccini S, Sironi M, Blandini F, Nicoletti F, Mercuri NB, Imbimbo BP, Nisticò R. Electrophysiological and metabolic effects of CHF5074 in the hippocampus: protection against in vitro ischemia. Pharmacol Res 2014; 81:83-90. [PMID: 24630950 DOI: 10.1016/j.phrs.2014.02.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 02/26/2014] [Accepted: 02/28/2014] [Indexed: 01/11/2023]
Abstract
CHF5074 is a non-steroidal anti-inflammatory derivative holding disease-modifying potential for the treatment of Alzheimer's disease. The aim of the present study was to characterize the electrophysiological and metabolic profile of CHF5074 in the hippocampus. Electrophysiological recordings show that CHF5074 inhibits in a dose-dependent manner the current-evoked repetitive firing discharge in CA1 pyramidal neurons. This result is paralleled by a dose-dependent reduction of field excitatory post-synaptic potentials with no effect on the paired-pulse ratio. The effects of CHF5074 were not mediated by AMPA or NMDA receptors, since the inward currents induced by local applications of AMPA and NMDA remained constant in the presence of this compound. We also suggest a possible activity of CHF5074 on ASIC1a receptor since ASIC1a-mediated current, evoked by application of a pH 5.5 solution, is reduced by pretreatment with this compound. Moreover, we demonstrate that CHF5074 treatment is able to counteract in hippocampal slices the OGD-induced increase in alanine, lactate and acetate levels. Finally, CHF5074 significantly reduced the apoptosis in hippocampal neurons exposed to OGD, as revealed by cleaved-caspase-3 immunoreactivity and TUNEL staining. Overall, the present work identifies novel mechanisms for CHF5074 in reducing metabolic acidosis, rendering this compound potentially useful also in conditions of brain ischemia.
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Affiliation(s)
- D Mango
- IRCCS Santa Lucia Foundation, Rome, Italy
| | - G Barbato
- European Brain Research Institute, Rita-Levi Montalcini Foundation, Rome, Italy; University of Rome Tor Vergata, Rome, Italy
| | | | - M B Panico
- IRCCS Santa Lucia Foundation, Rome, Italy
| | - M Feligioni
- European Brain Research Institute, Rita-Levi Montalcini Foundation, Rome, Italy
| | - C Schepisi
- IRCCS Santa Lucia Foundation, Rome, Italy; Sapienza University of Rome, Rome, Italy
| | - M Graziani
- Sapienza University of Rome, Rome, Italy
| | - V Porrini
- University of Brescia, Brescia, Italy
| | | | | | - M Pizzi
- University of Brescia, Brescia, Italy; IRCCS San Camillo, Venice, Italy
| | | | - M Sironi
- University of Milan, Milan, Italy
| | - F Blandini
- IRCCS Mondino National Neurological Institute, Pavia, Italy
| | | | - N B Mercuri
- IRCCS Santa Lucia Foundation, Rome, Italy; University of Rome Tor Vergata, Rome, Italy
| | - B P Imbimbo
- Research and Development Department, Chiesi Farmaceutici, Parma, Italy
| | - R Nisticò
- IRCCS Santa Lucia Foundation, Rome, Italy; Sapienza University of Rome, Rome, Italy.
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Rugge M, Fassan M, Pizzi M, Graham DY. Letter: gastric cancer and pernicious anaemia--often Helicobacter pylori in disguise. Aliment Pharmacol Ther 2013; 37:764-5. [PMID: 23458544 DOI: 10.1111/apt.12239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Accepted: 01/20/2013] [Indexed: 12/12/2022]
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Dell'Acqua ML, Lorenzini L, D'Intino G, Sivilia S, Pasqualetti P, Panetta V, Paradisi M, Filippi MM, Baiguera C, Pizzi M, Giardino L, Rossini PM, Calzà L. Functional and molecular evidence of myelin- and neuroprotection by thyroid hormone administration in experimental allergic encephalomyelitis. Neuropathol Appl Neurobiol 2012; 38:454-70. [PMID: 22007951 DOI: 10.1111/j.1365-2990.2011.01228.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIMS Recent data in mouse and rat demyelination models indicate that administration of thyroid hormone (TH) has a positive effect on the demyelination/remyelination balance. As axonal pathology has been recognized as an early neuropathological event in multiple sclerosis, and remyelination is considered a pre-eminent neuroprotective strategy, in this study we investigated whether TH administration improves nerve impulse propagation and protects axons. METHODS We followed up the somatosensory evoked potentials (SEPs) in triiodothyronine (T3)-treated and untreated experimental allergic encephalomyelitis (EAE) Dark-Agouti female rats during the electrical stimulation of the tail nerve. T3 treatment started on the 10th day post immunization (DPI) and a pulse administration was continued until the end of the study (33 DPI). SEPs were recorded at baseline (8 DPI) and the day after each hormone/ vehicle administration. RESULTS T3 treatment was associated with better outcome of clinical and neurophysiological parameters. SEPs latencies of the two groups behaved differently, being briefer and closer to control values (=faster impulse propagation) in T3-treated animals. The effect was evident on 24 DPI. In the same groups of animals, we also investigated axonal proteins, showing that T3 administration normalizes neurofilament immunoreactivity in the fasciculus gracilis and tau hyperphosphorylation in the lumbar spinal cord of EAE animals. No sign of plasma hyperthyroidism was found; moreover, the dysregulation of TH nuclear receptor expression observed in the spinal cord of EAE animals was corrected by T3 treatment. CONCLUSIONS T3 supplementation results in myelin sheath protection, nerve conduction preservation and axon protection in this animal model of multiple sclerosis.
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Affiliation(s)
- M L Dell'Acqua
- Department of Neurology, University Campus Bio-Medico, Rome, Italy
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Romero-Farina G, Aguadé-Bruix S, Pizzi MN, Cuberas-Borrós G, De León G, Castell-Conesa J, García-Dorado D, Candell-Riera J. [Analysis of the diastolic function by myocardial perfusion gated SPECT after coronary revascularization in acute myocardial infarction]. Rev Esp Med Nucl Imagen Mol 2012; 32:8-12. [PMID: 23159107 DOI: 10.1016/j.remn.2012.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 04/08/2012] [Accepted: 04/15/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To evaluate the evolutive changes in diastolic function after percutaneous coronary revascularization (PCR) in acute myocardial infarction (AMI), using myocardial perfusion gated SPECT. METHODS Thirty-two patients (mean 61.9±9.7 years, 7 women) were studied by two at rest gated SPECT: the first gated-SPECT-1 was performed with an injection of a dose of (99m)Tc-tetrofosmin prior to PCR and the second gated-SPECT-2 between the fourth and fifth weeks after AMI. Changes of peak filling rate (PFR) and the time to peak filling rate (TTPF) were assessed between both studies, and were related to the extent of salvaged myocardium (SM), end-diastolic (EDV) and end-systolic (ESV) volumes, and left ventricular ejection fraction (LVEF) changes. RESULTS An improvement was observed in diastolic function parameters Gated-SPECT-2: PFR increased significantly (P=0.011) while the TTPF decreased without reaching statistical significance (P=0.288). In multivariate analysis, adjusted by clinical and coronary variables, improvement of PFR was significantly associated with percentage of SM (P=0.030), increase in LVEF (P=0.004) and with ESV volume reduction (P=0.005). Improvement of TTPF was only related significantly to the percentage of SM (P=0.046). PFR increased 0.01 EDV/sec. and TTPF decreased 1.14ms for each cm(2) increase of the area of SM. CONCLUSIONS After PCR in AMI, the myocardial perfusion gated SPECT makes it possible to assess the significant improvement in diastolic function mainly related to the amount of MS.
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Affiliation(s)
- G Romero-Farina
- Unidad de Cardiología Nuclear, Hospital Universitario Vall d'Hebron, Institut de Recerca, Universidad Autónoma de Barcelona, Barcelona, España.
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Pizzi M, Fassan M, Cimino M, Zanardo V, Chiarelli S. Realdo Colombo's De Re Anatomica: The renaissance origin of the term “placenta” and its historical background. Placenta 2012; 33:655-7. [DOI: 10.1016/j.placenta.2012.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 03/12/2012] [Accepted: 03/13/2012] [Indexed: 11/30/2022]
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Rugge M, Fassan M, Pizzi M, Zorzetto V, Maddalo G, Realdon S, De Bernard M, Betterle C, Cappellesso R, Pennelli G, de Boni M, Farinati F. Autoimmune gastritis: histology phenotype and OLGA staging. Aliment Pharmacol Ther 2012; 35:1460-6. [PMID: 22519568 DOI: 10.1111/j.1365-2036.2012.05101.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 03/14/2012] [Accepted: 03/28/2012] [Indexed: 12/12/2022]
Abstract
BACKGROUND Among Western populations, the declining incidence of Helicobacter pylori infection coincides with a growing clinical impact of autoimmune gastritis. AIMS To describe the histological phenotype of autoimmune gastritis, also to test the prognostic impact of OLGA staging in the autoimmune setting. METHODS A single-institutional series (spanning the years 2003-2011) of 562 consecutive patients (M:F ratio: 1:3.7; mean age = 57.6 ± 14.4 years) with serologically confirmed autoimmune gastritis underwent histology review and OLGA staging. RESULTS Helicobacter pylori infection was ascertained histologically in 44/562 cases (7.8%). Forty six biopsy sets (8.2%) featured OLGA stages III-IV; they included all four cases of incidental epithelial neoplasia (three intraepithelial and one invasive; three of these four cases had concomitant H. pylori infection). There were 230 (40.9%) and 139 (24.7%) cases, respectively, of linear and micro-nodular enterochromaffin-like cell hyperplasia; 19 (3.4%) type I carcinoids were detected. The series included 116 patients who underwent repeated endoscopy/biopsy sampling (mean time elapsing between the two procedures = 54 months; range 24-108). Paired histology showed a significant (P = 0.009) trend towards a stage progression [the stage increased in 25/116 cases (22%); it remained unchanged in 87/116 cases (75%)]. CONCLUSIONS In autoimmune gastritis, the cancer risk is restricted to high-risk gastritis stages (III-IV), and is associated mainly with concomitant H. pylori infection. OLGA staging consistently depicts the time-dependent organic progression of the autoimmune disease and provides key information for secondary gastric cancer prevention strategies.
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Affiliation(s)
- M Rugge
- Department of Medicine, University of Padua, PD, Italy.
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Fassan M, Realdon S, Pizzi M, Balistreri M, Battaglia G, Zaninotto G, Ancona E, Rugge M. Programmed cell death 4 nuclear loss and miR-21 or activated Akt overexpression in esophageal squamous cell carcinogenesis. Dis Esophagus 2012; 25:263-8. [PMID: 21883657 DOI: 10.1111/j.1442-2050.2011.01236.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The programmed cell death 4 (PDCD4) tumor suppressor is down-regulated in several malignancies, and the (subcellular) expression of its protein product is modulated by both oncomiR miR-21 and protein kinase B (Akt). PDCD4 and activated Akt (phosphorylated Akt [pAkt]) expression were assessed immunohistochemically in 53 tissue samples obtained from 25 endoscopic esophageal mucosal resections performed for squamous intraepithelial neoplasia (IEN) or squamous intramucosal carcinoma (IM-SSC). In total, 33 IEN (low-grade = 15; high-grade = 15) and 20 IM-SSC specimens were considered; 50 additional tissue samples of histologically proven normal esophageal mucosa were considered as normal controls. To further validate the results achieved, miR-21 expression (as assessed by quantitative real-time polymerase chain reaction and in situ hybridization) was tested in another series of 15 normal esophageal tissue samples, 15 high-grade IEN, and 15 IM-SCCs. Normal suprabasal squamous epithelial layers consistently featured strong PDCD4 nuclear immunostaining, which was significantly lower (P < 0.001) in IEN (both low-and high-grade) and in IM-SSC. Conversely, pAkt and miR-21 expression was significantly up-regulated in the whole spectrum of preneoplastic/neoplastic lesions considered. PDCD4 down-regulation, as assessed by immunohistochemistry, is a reliable biomarker of early-stage squamous cell esophageal neoplasia, providing additional information in the histological assessment of these lesions.
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Affiliation(s)
- M Fassan
- Department of Medical Diagnostic Sciences and Special Therapies, Surgical Pathology and Cytopathology Unit, University of Padova, Italy
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Pizzi M, Ludwig K, Palazzolo G, Busatto G, Rettore C, Altavilla G. Cervical Follicular Dendritic Cell Sarcoma: A Case Report and Review of the Literature. Int J Immunopathol Pharmacol 2011; 24:539-44. [DOI: 10.1177/039463201102400231] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Follicular dendritic cell (FDC) sarcoma is a rare tumour with a low-to-intermediate grade of malignancy. It frequently occurs in cervical, mediastinal and axillary lymph nodes. In approximately 30% of cases an extranodal localization has been reported (tonsils, oral cavity, mediastinum, liver, and spleen). Very little is known about possible treatment options and overall prognosis. This case reports a 66 year-old patient, who underwent surgical removal of a persistently enlarged right cervical lymph node. The histopathological examination revealed a spindle cell tumour with lymphocyte and plasma cell infiltrates. Neoplastic cells stained positive for CD21, CD23 and CD35, thus confirming the diagnosis of FDC sarcoma. The neoplasm recurred two years later and partial regression was achieved by IGEV rescue therapy. We briefly discuss clinical history, histopathological differential diagnosis and treatment options of FDC sarcoma.
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Affiliation(s)
- M. Pizzi
- Department of Diagnostic Medical Sciences and Special Therapies University of Padova
| | - K. Ludwig
- Department of Diagnostic Medical Sciences and Special Therapies University of Padova
| | - G. Palazzolo
- Division of Medical Oncology, U.L.S.S. 15 “Alta Padovana”, Cittadella
| | - G. Busatto
- Department of Anatomic Pathology, U.L.S.S. 15 “Alta Padovana”, Cittadella
| | - C. Rettore
- Division of Radiology, U.L.S.S. 15 “Alta Padovana”, Cittadella, Padova, Italy
| | - G. Altavilla
- Department of Diagnostic Medical Sciences and Special Therapies University of Padova
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Lanzillotta A, Sarnico I, Ingrassia R, Boroni F, Branca C, Benarese M, Faraco G, Blasi F, Chiarugi A, Spano P, Pizzi M. The acetylation of RelA in Lys310 dictates the NF-κB-dependent response in post-ischemic injury. Cell Death Dis 2010; 1:e96. [PMID: 21368872 PMCID: PMC3032326 DOI: 10.1038/cddis.2010.76] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The activation of nuclear factor kappa B (NF-κB) p50/RelA is a key event in ischemic neuronal injury, as well as in brain ischemic tolerance. We tested whether epigenetic mechanisms affecting the acetylation state of RelA might discriminate between neuroprotective and neurotoxic activation of NF-κB during ischemia. NF-κB activation and RelA acetylation were investigated in cortices of mice subjected to preconditioning brain ischemia or lethal middle cerebral artery occlusion (MCAO) and primary cortical neurons exposed to preconditioning or lethal oxygen-glucose deprivation (OGD). In mice subjected to MCAO and in cortical neurons exposed to lethal OGD, activated RelA displayed a high level of Lys310 acetylation in spite of reduced total acetylation. Also, acetylated RelA on Lys310 interacted strongly with the CREB-binding protein (CBP). Conversely, RelA activated during preconditioning ischemia appeared deacetylated on Lys310. Overexpressing RelA increased Bim promoter activity and neuronal cell death both induced by lethal OGD, whereas overexpressing the acetylation-resistant RelA-K310R, carrying a mutation from Lys310 to arginine, prevented both responses. Pharmacological manipulation of Lys310 acetylation by the sirtuin 1 activator resveratrol repressed the activity of the Bim promoter and reduced the neuronal cell loss. We conclude that the acetylation of RelA in Lys310 dictates NF-κB-dependent pro-apoptotic responses and represents a suitable target to dissect pathological from neuroprotective NF-κB activation in brain ischemia.
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Affiliation(s)
- A Lanzillotta
- Division of Pharmacology and Experimental Therapeutics, Department of Biomedical Sciences & Biotechnologies, School of Medicine, University of Brescia, Istituto Nazionale di Neuroscienze Brescia, Italy
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Pinna A, Pontis S, Pizzi M, Morelli M. P2.017 Behavioural and biochemical characterization of c-Rel mutant mice as model of Parkinson's disease. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70368-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Imbimbo BP, Hutter-Paier B, Villetti G, Facchinetti F, Cenacchi V, Volta R, Lanzillotta A, Pizzi M, Windisch M. CHF5074, a novel gamma-secretase modulator, attenuates brain beta-amyloid pathology and learning deficit in a mouse model of Alzheimer's disease. Br J Pharmacol 2009; 156:982-93. [PMID: 19239474 DOI: 10.1111/j.1476-5381.2008.00097.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE We evaluated the effects of 1-(3',4'-dichloro-2-fluoro[1,1'-biphenyl]-4-yl)-cyclopropanecarboxylic acid (CHF5074), a new gamma-secretase modulator, on brain beta-amyloid pathology and spatial memory in transgenic mice expressing the Swedish and London mutations of human amyloid precursor protein (hAPP). EXPERIMENTAL APPROACH Sixty 6-month-old hAPP mice were treated for 6 months with CHF5074 or ibuprofen (375 ppm in the diet) or standard diet. Twenty-one wild-type mice received standard diet. KEY RESULTS Compared with transgenic controls, CHF5074 treatment significantly reduced the area occupied by plaques in cortex (P = 0.003) and hippocampus (P = 0.004). The number of plaques were also reduced by CHF5074 in both cortex (P = 0.022) and hippocampus (P = 0.005). Plaque-associated microglia in CHF5074-treated animals was lower than in transgenic controls in cortex (P = 0.008) and hippocampus (P = 0.002). Ibuprofen treatment significantly reduced microglia area in cortex and hippocampus but not beta-amyloid burden. On the last day of the Morris water maze, transgenic controls performed significantly worse than the non-transgenic animals and the CHF5074-treated transgenic mice, on the swimming path to reach the hidden platform. Ibuprofen-treated animals did not perform significantly better than transgenic controls. CONCLUSIONS AND IMPLICATIONS Chronic CHF5074 treatment reduced brain beta-amyloid burden, associated microglia inflammation and attenuated spatial memory deficit in hAPP mice. This novel gamma-secretase modulator is a promising therapeutic agent for Alzheimer's disease.
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Affiliation(s)
- B P Imbimbo
- Research and Development, Chiesi Farmaceutici, Via Palermo, Parma, Italy.
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Montecamozzo G, Leopaldi E, Baratti C, Previde P, Ferla F, Pizzi M, Sposato J, Pariani D, Sartani A, Trabucchi E. Incarcerated massive incisional hernia: extensive necrosis of the colon in a very obese patient. Surgical treatment and vacuum-assisted closure therapy: a case report. Hernia 2008; 12:641-3. [PMID: 18427907 DOI: 10.1007/s10029-008-0370-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Accepted: 03/14/2008] [Indexed: 11/24/2022]
Abstract
We discuss a diabetic obese patient with an extensive necrosis of the ascending and transverse colon plus segmental necrosis of the small bowel incarcerated in a massive median incisional hernia below the umbilicus. After a blood test and an abdominal CT scan (without contrast dial), the patient underwent an urgent operation. We performed an extended right hemicolectomy, multiple segmental small bowel resections and a terminal ileostomy. The defect of the abdominal wall was treated with vacuum-assisted closure (VAC) therapy with good results.
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Affiliation(s)
- G Montecamozzo
- Chirurgia I-Onco-Gastro-Surgical Departement, A.O. Luigi Sacco-Università degli Studi di Milano, Via G.B.Grassi 74, 20157, Milano, Italy
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Sarnico I, Boroni F, Benarese M, Alghisi M, Valerio A, Battistin L, Spano P, Pizzi M. Targeting IKK2 by pharmacological inhibitor AS602868 prevents excitotoxic injury to neurons and oligodendrocytes. J Neural Transm (Vienna) 2008; 115:693-701. [PMID: 18197358 DOI: 10.1007/s00702-007-0016-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Accepted: 12/17/2007] [Indexed: 01/01/2023]
Abstract
Among the diverse mechanisms involved in the pathophysiology of post-ischemic and post-traumatic injuries, excitotoxicity and nuclear factor-kappaB (NF-kappaB) activation through induction of IkappaB kinase (IKK) complex have a primary role. We investigated the effects of the selective inhibitor of the IKK2 subunit, the anilinopyrimidine derivative AS602868, on excitotoxic injury produced in rat organotypic hippocampal slices and cerebellar primary neurons. Brief exposure to N-methyl-D-aspartate (NMDA) induces astrocyte reactivity, neuron cell death and oligodendrocyte degeneration in hippocampal slices. Application of AS602868 elicited a long-lasting protection of both neurons and oligodendrocytes. Maximal effect was observed with prolonged application of the compound after NMDA exposure. Neuroprotection was also evident in primary cultures of cerebellar granule cells starting from 20 nM concentration. AS602868-elicited neuroprotection correlated with inhibition of NF-kappaB activity. Our results suggest that AS602868 may prove to be a valuable approach in treating neurodegeneration and demyelination associated with cerebral trauma and ischemia.
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Affiliation(s)
- I Sarnico
- Division of Pharmacology and Experimental Therapeutics, Department of Biomedical Sciences and Biotechnologies, School of Medicine, University of Brescia, Brescia, Italy
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Sarnico I, Boroni F, Benarese M, Sigala S, Lanzillotta A, Battistin L, Spano P, Pizzi M. Activation of NF-kappaB p65/c-Rel dimer is associated with neuroprotection elicited by mGlu5 receptor agonists against MPP(+) toxicity in SK-N-SH cells. J Neural Transm (Vienna) 2007; 115:669-76. [PMID: 18094921 DOI: 10.1007/s00702-007-0007-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Accepted: 12/04/2007] [Indexed: 12/25/2022]
Abstract
Nuclear factor-kappaB (NF-kappaB) is a transcriptional regulator of neuron survival eliciting diverse effects according to the specific composition of its active dimer. While p50/p65 mediates neurodegenerative events, c-Rel-containing dimers promote cell survival. Stimulation of metabotropic glutamate receptors type 5 (mGlu5) reduces neuron vulnerability to amyloid-beta through activation of anti-apoptotic, c-Rel-dependent transcription of Bcl-X(L) pathway. We here evaluated the protective activity of mGlu5 agonists in dopaminergic SK-N-SH cells exposed to 1-methyl-4-phenylpyridinium (MPP(+)), the active metabolite of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) causing parkinsonism in experimental animals. MPP(+) produced a concentration-dependent cell loss. Activation of mGlu5 receptors by CHPG (1 mM) and 3HPG (50 microM) abolished the toxic effect produced by 3 microM MPP(+). The neuroprotection was associated with activation of NF-kappaB p65/c-Rel dimer and reduction of p50/p65. These effects were prevented by the mGlu5 receptor antagonist MPEP (5 microM). It is suggested that mGlu5 receptor agonists through activation of a c-Rel-dependent anti-apoptotic pathway can rescue dopaminergic cell from mitochondrial toxicity.
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Affiliation(s)
- I Sarnico
- Division of Pharmacology and Experimental Therapeutics, Department of Biomedical Sciences and Biotechnologies, School of Medicine, University of Brescia, Brescia, Italy
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Memo M, Pizzi M, Belloni M, Benarese M, Spano P. Activation of Dopamine D2 Receptors Linked to Voltage-Sensitive Potassium Channels Reduces Forskolin-Induced Cyclic AMP Formation in Rat Pituitary Cells. J Neurochem 2006; 59:1829-35. [PMID: 1357100 DOI: 10.1111/j.1471-4159.1992.tb11016.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3,4-Dihydroxyphenylethylamine (dopamine) D2 receptor agonists, including BHT 920 and bromocriptine, and the potassium channel opener minoxidil share the property of hyperpolarizing the plasma membrane by activating voltage-dependent potassium channels. These drugs were tested for their ability to inhibit the cyclic AMP formation induced by forskolin either in intact or in broken pituitary cells. In contrast to bromocriptine, which was active in both experimental systems, BHT 920 and minoxidil inhibited the forskolin-induced cyclic AMP formation in intact-cell but not in broken-cell preparations. The effects of BHT 920 were (a) concentration dependent, with a calculated IC50 of 0.7 microM, (b) dopaminergic in nature, being specifically antagonized by sulpiride, (c) not additive with those induced by minoxidil, and (d) less effective in the presence of potassium channel blockers, such as 4-aminopyridine and tetraethylammonium. These data indicate that the inhibition of forskolin-induced cyclic AMP formation by BHT 920 in intact pituitary cells is not a primary consequence of receptor occupation, but a late event, possibly related to the opening of voltage-dependent potassium channels elicited by this drug through the activation of a subtype of dopamine D2 receptors uncoupled to adenylyl cyclase.
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Affiliation(s)
- M Memo
- Department of Biomedical Sciences and Biotechnologies, School of Medicine, University of Brescia, Italy
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Pizzi M, Sarnico I, Boroni F, Benarese M, Steimberg N, Mazzoleni G, Dietz GPH, Bähr M, Liou HC, Spano PF. Erratum: NF-κB factor c-Rel mediates neuroprotection elicited by mGlu5 receptor agonists against amyloid β-peptide toxicity. Cell Death Differ 2005. [DOI: 10.1038/sj.cdd.4401742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Pizzi M, Sarnico I, Boroni F, Benarese M, Steimberg N, Mazzoleni G, Dietz GPH, Bähr M, Liou HC, Spano PF. NF-κB factor c-Rel mediates neuroprotection elicited by mGlu5 receptor agonists against amyloid β-peptide toxicity. Cell Death Differ 2005; 12:761-72. [PMID: 15818410 DOI: 10.1038/sj.cdd.4401598] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Opposite effects of nuclear factor-kappaB (NF-kappaB) on neuron survival rely on activation of diverse NF-kappaB factors. While p65 is necessary for glutamate-induced cell death, c-Rel mediates prosurvival effects of interleukin-1beta. However, it is unknown whether activation of c-Rel-dependent pathways reduces neuron vulnerability to amyloid-beta (Abeta), a peptide implicated in Alzheimer's disease pathogenesis. We show that neuroprotection elicited by activation of metabotropic glutamate receptors type 5 (mGlu5) against Abeta toxicity depends on c-Rel activation. Abeta peptide induced NF-kappaB factors p50 and p65. The mGlu5 agonists activated c-Rel, besides p50 and p65, and the expression of manganese superoxide dismutase (MnSOD) and Bcl-X(L). Targeting c-Rel expression by RNA interference suppressed the induction of both antiapoptotic genes. Targeting c-Rel or Bcl-X(L) prevented the prosurvival effect of mGlu5 agonists. Conversely, c-Rel overexpression or TAT-Bcl-X(L) addition rescued neurons from Abeta toxicity. These data demonstrate that mGlu5 receptor activation promotes a c-Rel-dependent antiapoptotic pathway responsible for neuroprotection against Abeta peptide.
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Affiliation(s)
- M Pizzi
- Division of Pharmacology and Experimental Therapeutics, Department of Biomedical Sciences and Biotechnologies, School of Medicine, University of Brescia, 25123 Brescia, Italy.
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Pizzi M, Sarnico I, Boroni F, Benetti A, Benarese M, Spano PF. Inhibition of IκBα phosphorylation prevents glutamate-induced NF-κB activation and neuronal cell death. Re-Engineering of the Damaged Brain and Spinal Cord 2005; 93:59-63. [PMID: 15986728 DOI: 10.1007/3-211-27577-0_8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
NF-kappaB is a nuclear transcription factor involved in the control of fundamental cellular functions including regulation of cell survival. We investigated NF-kappaB activation induced by two opposing modulators of cell viability: IL-1beta and glutamate. We found that IL-1beta activated p50, p65 and c-Rel subunits of NF-kappaB, while glutamate activated only p50 and p65 proteins. Cell stimulation by glutamate, correlated with expression of the pro-apoptotic genes Caspase-3, Caspase-2L and Bax. Conversely, IL-1beta induced the expression of the short anti-apoptotic isoform of Caspase-2. Finally, we analysed the effect of the inhibition of IkappaBalpha degradation on glutamate-induced toxicity by using BAY 11-7082, a selective inhibitor of IkappaBalpha phosphorylation. Our results suggest that BAY 11-7082 preserves neuron viability from the glutamate-mediated injury.
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Affiliation(s)
- M Pizzi
- Division of Pharmacology, Department of Biomedical Sciences & Biotechnologies, Brescia, Italy.
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Goffi F, Boroni F, Benarese M, Sarnico I, Benetti A, Spano PF, Pizzi M. The inhibitor of I kappa B alpha phosphorylation BAY 11-7082 prevents NMDA neurotoxicity in mouse hippocampal slices. Neurosci Lett 2004; 377:147-51. [PMID: 15755516 DOI: 10.1016/j.neulet.2004.11.088] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2004] [Revised: 11/25/2004] [Accepted: 11/29/2004] [Indexed: 01/04/2023]
Abstract
NF-kappaB is a nuclear transcription factor involved in the control of fundamental cellular functions including cell survival. Among the many target genes of this factor, both pro- and anti-apoptotic genes have been described. To evaluate the contribution of NF-kappaB activation to excitotoxic insult, we analysed the effect of IkappaBalpha (IkappaBalpha) phosphorylation blockade on glutamate-induced toxicity in adult mouse hippocampal slices. By using immunocytochemical and EMSA techniques, we found that (i) acute exposure of hippocampal slices to NMDA induced nuclear translocation of NF-kappaB, (ii) NMDA-mediated activation of NF-kappaB was prevented by BAY 11-7082, an inhibitor of IkappaBalpha phosphorylation and degradation, and (iii) BAY 11-7082-mediated inhibition of NF-kappaB activation was associated with neuroprotection.
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Affiliation(s)
- F Goffi
- Division of Pharmacology, Department of Biomedical Sciences and Biotechnologies, Viale Europa, 11, 25123 Brescia, Italy
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Abstract
SUMMARY This paper describes the Pizzi Holistic Wellness Assessment tool. Using theory from the field of health promotion and expertise gained in his private home health practice, the author developed and pilot tested this assessment on a variety of individuals. The assessment is designed to be used with different populations in a variety of settings to help clients self assess their health and well-being.
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Affiliation(s)
- M Pizzi
- Sacred Heart University, Department of Occupational Therapy, Fairfield, CT, 06850
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Pizzi M, Benarese M, Boroni F, Goffi F, Valerio A, Spano PF. Neuroprotection by metabotropic glutamate receptor agonists on kainate-induced degeneration of motor neurons in spinal cord slices from adult rat. Neuropharmacology 2000; 39:903-10. [PMID: 10699456 DOI: 10.1016/s0028-3908(99)00257-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Research has provided evidence about the role of excitotoxicity in the pathophysiology of sporadic amyotrophic lateral sclerosis and suggests that AMPA/kainate receptor activation contributes greatly in mediating glutamate injury to motor neurons. The recent finding of variable expression of metabotropic glutamate (mGlu) receptor subtypes in adult rat spinal cord has prompted us to investigate their contribution to the excitotoxic process. We report here that stimulation of mGlu receptors efficiently prevents motor neuron degeneration induced by kainate. The application of kainate to lumbar spinal cord slices from adult rats induced a massive degeneration of motor neurons which became shrunken, dark and TUNEL-positive. On the contrary, no significant neurotoxicity was observed after NMDA application. A blockade of ionotropic non-NMDA receptors by CNQX, and mGlu receptor stimulation, efficiently counteracted kainate-mediated cell death. Among the various agonists for mGlu receptors, we tested 3-hydroxyphenylglycine (3HPG), which selectively stimulates group I mGlu receptors. In addition, we tested 2-(carboxycyclopropyl)glycine (L-CCG-I) and 4-carboxy-3-hydroxyphenylglycine (4C3HPG), two selective agonists for group II receptors, as well as L-amino-4-phosphonobutyrate (L-AP4), a preferential agonist for group III. The results suggest that all three groups of mGlu receptors are involved in inhibiting excitotoxic phenomena mediated by kainate on spinal cord motor neurons. This was despite being localized differently and, possibly, activating different neuroprotective pathways.
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Affiliation(s)
- M Pizzi
- Division of Pharmacology and Experimental Therapeutics, Department of Biomedical Sciences and Biotechnologies, School of Medicine, University of Brescia, Brescia, Italy.
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Nicoletti F, Bruno V, Catania MV, Battaglia G, Copani A, Barbagallo G, Ceña V, Sanchez-Prieto J, Spano PF, Pizzi M. Group-I metabotropic glutamate receptors: hypotheses to explain their dual role in neurotoxicity and neuroprotection. Neuropharmacology 1999; 38:1477-84. [PMID: 10530809 DOI: 10.1016/s0028-3908(99)00102-1] [Citation(s) in RCA: 132] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The role of group-I metabotropic glutamate receptors (mGlu1 and 5) in neurodegeneration is still controversial. While antagonists of these receptors are consistently neuroprotective, agonists have been found to either amplify or attenuate excitotoxic neuronal death. At least three variables affect responses to agonists: (i) the presence of the NR2C subunit in the NMDA receptor complex; (ii) the existence of an activity-dependent functional switch of group-I mGlu receptors, similar to that described for the regulation of glutamate release; and (iii) the presence of astrocytes expressing mGlu5 receptors. Thus, a number of factors, including the heteromeric composition of NMDA receptors, the exposure time to drugs or to ambient glutamate, and the function of astrocytes clearing extracellular glutamate and producing neurotoxic or neuroprotective factors, must be taken into account when examining the role of group-I mGlu receptors in neurodegeneration/neuroprotection.
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Affiliation(s)
- F Nicoletti
- Department of Pharmaceutical Sciences, University of Catania, Italy.
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Onorato J, Esposito S, Scovena E, Morandi B, Morelli M, Pizzi M, Zisa G, Marchisio P, Principi N. Eosinophil involvement and serum IgE level in HIV-1-infected children. J Allergy Clin Immunol 1999; 104:245-7. [PMID: 10400872 DOI: 10.1016/s0091-6749(99)70146-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- J Onorato
- Paediatric Department IV, University of Milan, L. Sacco Hospital, Milan, Italy
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Pizzi M, Boroni F, Bianchetti KM, Memo M, Spano P. Reversal of glutamate excitotoxicity by activation of PKC-associated metabotropic glutamate receptors in cerebellar granule cells relies on NR2C subunit expression. Eur J Neurosci 1999; 11:2489-96. [PMID: 10383638 DOI: 10.1046/j.1460-9568.1999.00669.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Stimulation of metabotropic glutamate receptors (mGluRs) belonging to group I has been found to reduce N-methyl-D-aspartate (NMDA) receptor function in terms of both intracellular calcium concentration ([Ca2+]i) rise and neurotoxicity in cultured cerebellar granule cells. In the present study, we investigated whether the mGluR-elicited modulation of glutamate responses might rely on the heteromeric composition of NMDA receptor channel. NMDA receptors consist of two distinct groups of subunits: NR1, that is ubiquitously in the receptor complexes; and NR2A-D, that differentiate and potentiate NMDA receptor responses by assembling with NR1. Among NR2 subunits, only NR2A and NR2C mRNAs and relative proteins are detected in cerebellar granule cells at 10 days in vitro. To dissect the involvement of the two different subunits in making the NMDA receptor channel sensitive to modulation by group I mGluR agonists, expression of the NR2C subunit was prevented by treating the cells with specific antisense oligodeoxynucleotide (ODN). The capability of the mGluR agonists, trans-1-amino-cyclopentane-1,3-dicarboxylic acid (tACPD, 100 microM) or 3 hydroxyphenylglycine (3HPG, 100 microM), and the protein kinase C (PKC) activator, 4beta-phorbol-12,13-dibutyrate (PDBu, 1 microM), to inhibit the function of resultant NMDA receptors was then evaluated. We found that depletion of the NR2C subunit abolished the inhibitory effect of group I mGluR stimulation on glutamate-induced [Ca2+]i rise and neurotoxicity. The antisense ODN treatment also prevented the inhibitory effect of PDBu on glutamate responses. Conversely, in NR2C-lacking neurons, both group I mGluRs and PKC stimulation enhanced NMDA receptor-mediated effects. The present findings indicate that the capability of PKC-associated mGluRs to modulate native NMDA receptor function relies on the heteromeric configuration of the receptor-channel complex. Particularly, expression of the NR2C subunit is required to make the NMDA receptor sensitive to inhibitory modulation by mGluRs or PKC activation.
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Affiliation(s)
- M Pizzi
- Division of Pharmacology, Department of Biomedical Sciences, School of Medicine, University of Brescia, Italy.
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