76
|
Collet C, Maskali F, Clément A, Chrétien F, Poussier S, Karcher G, Marie PY, Chapleur Y, Lamandé-Langle S. Development of 6-[18F]fluoro-carbohydrate-based prosthetic groups and their conjugation to peptides via click chemistry. J Labelled Comp Radiopharm 2015; 59:54-62. [DOI: 10.1002/jlcr.3362] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 11/20/2015] [Accepted: 11/23/2015] [Indexed: 12/27/2022]
|
77
|
Zhang L, Huttin O, Girerd N, de Chillou C, Marie PY, Odille F, Felblinger J, Mandry D. Microvascular obstruction by delayed contrast-enhanced MRI remains a strong predictor of left ventricular remodeling even after successful reperfusion in acute myocardial infarction. J Cardiovasc Magn Reson 2015. [PMCID: PMC4328445 DOI: 10.1186/1532-429x-17-s1-p167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
|
78
|
Baggen VJM, Spinelli L, Venner C, Tuohinen S, Konopka M, Santoro C, Wahi S, Krstic I, Duchateau N, Handoko ML, Driessen MMP, Post MC, Van Dijk AP, Roos-Hesselink JW, Van Den Bosch AE, Takkenberg JJM, Sieswerda GT, Giudice CA, Castaldo D, Pisani A, Trimarco B, Huttin O, Mandry D, Voilliot D, Chabot JF, Marie PY, Juilliere Y, Chaouat A, Selton-Suty C, Skytta T, Virtanen V, Kellokumpu-Lehtinen PL, Raatikainen P, Burkhard-Jagodzinska K, Krol W, Zdanowicz R, Starczewski M, Aniol-Strzyzewska K, Jakubiak A, Sitkowski D, Dluzniewski M, Braksator W, Buonauro A, Bocchino ML, Esposito R, Canora A, Vaccaro A, Castaldo S, Sanduzzi Zamparelli A, Trimarco B, Galderisi M, Chong A, Deljanin Ilic M, Vrbic S, Marinkovic D, Ilic S, Sermesant M, Gibelin P, Ferrari E, Moceri P, Di Pasqua MC, Spruijt OA, Oosterveer FPT, Marcus JT, Bogaard HJ, Vonk Noordegraaf A. Moderated Posters session: pulmonary hypertension and other conditionsP516Echocardiographic findings predicting mortality in pulmonary arterial hypertension: a systematic review and meta-analysisP517Impairment of endothelial-mediated coronary flow reserve in patients with Anderson Fabry diseaseP518Comparative evaluation of various echocardiography-based methods for the estimation of pulmonary vascular resistance in pulmonary hypertensionP519Detection of early radiotherapy-induced changes in myocardial cyclic variation in breast cancer patients - an ultrasound tissue characterization studyP520Right ventricle adaptation changes resulting from endurance training in the group of junior cyclists - sex is an important determinantP521Impact of pulmonary hypertension on the impairment of right ventricular longitudinal function in patients with obstructive sleep apnea syndromeP522Improvement of echocardiographic (TTE) estimation of pulmonary vascular resistance (PVR) in comparison with right heart catheter measurementsP523Assessment of left ventricular function in breast cancer patients with adjuvant treatment (combined anthracyclines and trastuzumab): two years follow upP5243D regional right ventricular function in pulmonary hypertensionP525Simple echocardiographic parameters to assess right ventricular systolic function in patients with precapillary pulmonary hypertension: a comparison with cardiac magnetic resonance imaging. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
79
|
Huttin O, Petit MA, Bozec E, Eschalier R, Juillière Y, Moulin F, Lemoine S, Selton-Suty C, Sadoul N, Mandry D, Beaumont M, Felblinger J, Girerd N, Marie PY. Assessment of Left Ventricular Ejection Fraction Calculation on Long-axis Views From Cardiac Magnetic Resonance Imaging in Patients With Acute Myocardial Infarction. Medicine (Baltimore) 2015; 94:e1856. [PMID: 26512596 PMCID: PMC4985410 DOI: 10.1097/md.0000000000001856] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
To assess left ventricular ejection fraction (LVEF) accurately, cardiac magnetic resonance (CMR) can be indicated and lays on the evaluation of multiple slices of the left ventricle in short axis (CMRSAX). The objective of this study was to assess another method consisting of the evaluation of 2 long-axis slices (CMRLAX) for LVEF determination in acute myocardial infarction.One hundred patients underwent CMR 2 to 4 days after acute myocardial infarction. LVEF was computed by the area-length method on horizontal and vertical CMRLAX images. Those results were compared to reference values obtained on contiguous CMRSAX images in one hand, and to values obtained from transthoracic echocardiography (TTE) in the other hand. For CMRSAX and TTE, LVEF was computed with Simpson method. Reproducibility of LVEF measurements was additionally determined. The accuracy of volume measurements was assessed against reference aortic stroke volumes obtained by phase-contrast MR imaging.LVEF from CMRLAX had a mean value of 47 ± 8% and were on average 5% higher than reference LVEF from CMRSAX (42 ± 8%), closer to routine values from TTELAX (49 ± 8%), much better correlated with the reference LVEF from CMRSAX (R = 0.88) than that from TTE (R = 0.58), obtained with a higher reproducibility than with the 2 other techniques (% of interobserver variability: CMRLAX 5%, CMRSAX 11%, and TTE 13%), and obtained with 4-fold lower recording and calculation times than for CMRSAX. Apart from this, CMRLAX stroke volume was well correlated with phase-contrast values (R = 0.81).In patients with predominantly regional contractility abnormalities, the determination of LVEF by CMRLAX is twice more reproducible than the reference CMRSAX method, even though the LVEF is consistently overestimated compared with CMRSAX. However, the CMRLAX LVEF determination provides values closer to TTE measurements, the most available and commonly used method in clinical practice, clinical trials, and guidelines in ischemic cardiomyopathy. Moreover, LVEF determination by CMRLAX allows a 63% gain of acquisition/reading time compared with CMRSAX. Thus, despite the fact that LVEF obtained from CMRSAX remains the gold standard, CMRLAX should be considered to shorten the overall imaging acquisition and reading time as a putative replacement.
Collapse
|
80
|
Van Der Gucht A, Verger A, Yagdigul Y, Poussier S, Joly L, Watfa G, Benetos A, Karcher G, Marie PY. Complementarity of visual and voxel-based FDG-PET analysis to detect MCI-like hypometabolic pattern in elderly patients with hypertension and isolated memory complaints. Acta Radiol 2015; 56:980-9. [PMID: 25085109 DOI: 10.1177/0284185114542366] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 06/14/2014] [Indexed: 11/16/2022]
Abstract
BACKGROUND 18F-FDG PET can be used to aid in the diagnosis of Alzheimer's disease (AD) and clarify the diagnosis and prognosis of patients with mild cognitive impairment (MCI). PURPOSE To compare the results of a quantitative analysis of FDG-PET brain images to a standard visual analysis (SVA) with regards to the detection of MCI-like hypometabolic pattern in elderly patients with hypertension and subjective, isolated memory complaints. MATERIAL AND METHODS FDG-PET brain was performed in 71 patients (mean age, 76.4 ± 5.1 years; women, 53.5%). Images were analyzed for the presence of an MCI-like hypometabolic pattern using an SVA by 2 physicians and a voxel-based statistical procedure (statistical parametric mapping [SPM]) that compared each patient's images to normal reference samples from 19 elderly individuals obtained using the same PET camera. The reliability of these analyses was evaluated according to neuropsychological assessment results, including the Grober & Buschke Free and Cued Selective Reminding Test, and a combined analysis by a neuropsychologist. RESULTS An MCI-like hypometabolic pattern was documented in 5 patients (7%) by SVA and 7 patients (10%) by SPM analysis; however, only 2 of these patients were selected by both methods. The group characteristics of the 7 patients identified by the quantitative method were consistent with the MCI pattern, which included a higher rate of abnormal GB-FCSRT in Free Recall (57% vs. 9%, p < 0.05) or in Total Recall (29% vs. 8%, p < 0.05) when compared with other patients. In contrast, the group identified by SVA did not exhibit these characteristics. CONCLUSION A combined visual and quantitative analysis improves the diagnostic accuracy to detect an MCI-like hypometabolic pattern in elderly patients with hypertension and subjective, isolated memory complaints.
Collapse
|
81
|
Lemarié J, Huttin O, Girerd N, Mandry D, Juillière Y, Moulin F, Lemoine S, Beaumont M, Marie PY, Selton-Suty C. Usefulness of Speckle-Tracking Imaging for Right Ventricular Assessment after Acute Myocardial Infarction: A Magnetic Resonance Imaging/Echocardiographic Comparison within the Relation between Aldosterone and Cardiac Remodeling after Myocardial Infarction Study. J Am Soc Echocardiogr 2015; 28:818-27.e4. [DOI: 10.1016/j.echo.2015.02.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Indexed: 10/23/2022]
|
82
|
Venner C, Huttin O, Aslam R, Mandry D, Marie PY, Chabot F, Chaouat A, Juillière Y, Selton-Suty C. 32 Non-invasive multi-modality imaging evaluation of pulmonary arterial elastance in patients with pulmonary hypertension. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2015. [DOI: 10.1016/s1878-6480(15)30270-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
83
|
Huttin O, Zhang L, Lamiral Z, Lemarié J, Mandry D, Lemoine S, Micard E, Marie PY, Sadoul N, Girerd N, Selton-Suty C. 35 Global and regional myocardial deformation mechanics of microvascular obstruction in acute myocardial infarction a three dimensional speckle-tracking imaging study. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2015. [DOI: 10.1016/s1878-6480(15)30273-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
84
|
Boufenzer A, Lemarié J, Simon T, Derive M, Bouazza Y, Tran N, Maskali F, Groubatch F, Bonnin P, Bastien C, Bruneval P, Marie PY, Cohen R, Danchin N, Silvestre JS, Ait-Oufella H, Gibot S. TREM-1 Mediates Inflammatory Injury and Cardiac Remodeling Following Myocardial Infarction. Circ Res 2015; 116:1772-82. [PMID: 25840803 DOI: 10.1161/circresaha.116.305628] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 04/03/2015] [Indexed: 11/16/2022]
Abstract
RATIONALE Optimal outcome after myocardial infarction (MI) depends on a coordinated healing response in which both debris removal and repair of the myocardial extracellular matrix play a major role. However, adverse remodeling and excessive inflammation can promote heart failure, positioning leucocytes as central protagonists and potential therapeutic targets in tissue repair and wound healing after MI. OBJECTIVE In this study, we examined the role of triggering receptor expressed on myeloid cells-1(TREM-1) in orchestrating the inflammatory response that follows MI. TREM-1, expressed by neutrophils and mature monocytes, is an amplifier of the innate immune response. METHODS AND RESULTS After infarction, TREM-1 expression is upregulated in ischemic myocardium in mice and humans. Trem-1 genetic invalidation or pharmacological inhibition using a synthetic peptide (LR12) dampens myocardial inflammation, limits neutrophils recruitment and monocyte chemoattractant protein-1 production, thus reducing classical monocytes mobilization to the heart. It also improves left ventricular function and survival in mice (n=20-22 per group). During both permanent and transient myocardial ischemia, Trem-1 blockade also ameliorates cardiac function and limits ventricular remodeling as assessed by fluorodeoxyglucose-positron emission tomographic imaging and conductance catheter studies (n=9-18 per group). The soluble form of TREM-1 (sTREM-1), a marker of TREM-1 activation, is detectable in the plasma of patients having an acute MI (n=1015), and its concentration is an independent predictor of death. CONCLUSIONS These data suggest that TREM-1 could constitute a new therapeutic target during acute MI.
Collapse
|
85
|
Morel O, Mandry D, Micard E, Kauffmann C, Lamiral Z, Verger A, Chevalier-Mathias E, Mathias J, Karcher G, Meneroux B, Rossignol P, Marie PY. Evidence of Cyclic Changes in the Metabolism of Abdominal Aortic Aneurysms During Growth Phases: ¹⁸F-FDG PET Sequential Observational Study. J Nucl Med 2015; 56:1030-5. [PMID: 25791991 DOI: 10.2967/jnumed.114.146415] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 01/05/2015] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED The rates of growth of medically treated abdominal aortic aneurysms (AAA) are difficult to determine, and relationships with parietal inflammation and with metabolic parameters from (18)F-FDG PET remain unclear. This (18)F-FDG PET sequential observational study was aimed at analyzing the metabolic changes accompanying the growth phases of medically treated AAA. METHODS Thirty-nine patients (37 men; age [mean ± SD], 71 ± 12 y) exhibiting small and medically treated AAA (maximal diameter, 46 ± 3 mm) underwent (18)F-FDG PET and CT angiography at baseline and 9 mo later. Clinical and imaging parameter correlates of the 9-mo increase in maximal diameter were investigated; these included (18)F-FDG maximal standardized uptake values (SUVmax) averaged for slices encompassing the AAA volume. RESULTS Of the 39 patients, 9 (23%) had a significant (≥2.5 mm) increase in maximal diameter at 9 mo, whereas the remaining 30 did not. The patients with an increase in maximal diameter at 9 mo exhibited lower SUVmax within the AAA at baseline than patients who did not have such an increase (1.80 ± 0.45 vs. 2.21 ± 0.52; P = 0.04); they also displayed a trend toward greater changes in SUVmax at 9 mo (difference between 9 mo and baseline: +0.40 ± 0.85 vs. -0.06 ± 0.57; P = 0.07). Similar levels were ultimately reached in both groups at 9 mo (2.20 ± 0.83 and 2.15 ± 0.66). SUVmax was a significant, yet modest, baseline predictor of the absolute change in maximal diameter during follow-up (P = 0.049). CONCLUSION The enhancement in the maximal diameter of small AAA was preceded by a stage with a low level of (18)F-FDG uptake, but this low level of uptake was no longer documented after the growth phases, suggesting a pattern of cyclic metabolic changes.
Collapse
|
86
|
Perrin M, Djaballah W, Moulin F, Claudin M, Veran N, Imbert L, Poussier S, Morel O, Besseau C, Verger A, Boutley H, Karcher G, Marie PY. Stress-first protocol for myocardial perfusion SPECT imaging with semiconductor cameras: high diagnostic performances with significant reduction in patient radiation doses. Eur J Nucl Med Mol Imaging 2015; 42:1004-11. [DOI: 10.1007/s00259-015-3016-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/02/2015] [Indexed: 11/25/2022]
|
87
|
Imbert L, Galbrun E, Odille F, Poussier S, Noel A, Wolf D, Karcher G, Marie PY. Assessment of a Monte-Carlo simulation of SPECT recordings from a new-generation heart-centric semiconductor camera: from point sources to human images. Phys Med Biol 2015; 60:1007-18. [PMID: 25574814 DOI: 10.1088/0031-9155/60/3/1007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Geant4 application for tomographic emission (GATE), a Monte-Carlo simulation platform, has previously been used for optimizing tomoscintigraphic images recorded with scintillation Anger cameras but not with the new-generation heart-centric cadmium-zinc-telluride (CZT) cameras. Using the GATE platform, this study aimed at simulating the SPECT recordings from one of these new CZT cameras and to assess this simulation by direct comparison between simulated and actual recorded data, ranging from point sources to human images. Geometry and movement of detectors, as well as their respective energy responses, were modeled for the CZT 'D.SPECT' camera in the GATE platform. Both simulated and actual recorded data were obtained from: (1) point and linear sources of (99m)Tc for compared assessments of detection sensitivity and spatial resolution, (2) a cardiac insert filled with a (99m)Tc solution for compared assessments of contrast-to-noise ratio and sharpness of myocardial borders and (3) in a patient with myocardial infarction using segmented cardiac magnetic resonance imaging images. Most of the data from the simulated images exhibited high concordance with the results of actual images with relative differences of only: (1) 0.5% for detection sensitivity, (2) 6.7% for spatial resolution, (3) 2.6% for contrast-to-noise ratio and 5.0% for sharpness index on the cardiac insert placed in a diffusing environment. There was also good concordance between actual and simulated gated-SPECT patient images for the delineation of the myocardial infarction area, although the quality of the simulated images was clearly superior with increases around 50% for both contrast-to-noise ratio and sharpness index. SPECT recordings from a new heart-centric CZT camera can be simulated with the GATE software with high concordance relative to the actual physical properties of this camera. These simulations may be conducted up to the stage of human SPECT-images even if further refinement is needed in this setting.
Collapse
|
88
|
Bousquenaud M, Marie PY, Devaux Y. Permanent Occlusion of the Left Anterior Coronary Artery in the Rat. Bio Protoc 2015. [DOI: 10.21769/bioprotoc.1663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
|
89
|
Voilliot D, Odille F, Mandry D, Andronache M, Huttin O, Girerd N, Magnin-Poull I, Sellal JM, Olivier A, Manenti V, Felblinger J, Brembilla-Perrot B, Marie PY, Blangy H, Aliot E, Sadoul N, De Chillou C. 0141: Value of cardiac magnetic resonance imaging to predict the occurrence of ventricular tachycardia in post-infarct patients. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2015. [DOI: 10.1016/s1878-6480(15)71674-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
90
|
Liu Y, Maureira P, Gauchotte G, Falanga A, Marie V, Olivier A, Groubatch F, Gu C, Marie PY, Tran N. Effect of chronic left ventricular unloading on myocardial remodeling: Multimodal assessment of two heterotopic heart transplantation techniques. J Heart Lung Transplant 2014; 34:594-603. [PMID: 25703962 DOI: 10.1016/j.healun.2014.11.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/05/2014] [Accepted: 11/12/2014] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Cardiac recovery is possible by means of mechanical unloading yet remains rare. Excessive unloading-associated myocardial atrophy and fibrosis may adversely affect the process of reverse remodeling. In this study, we sought to evaluate the effect of different intensities of chronic left ventricular (LV) unloading on myocardial remodeling. METHODS Twenty-five isogenic Lewis rats underwent complete LV unloading (CU, n = 15) induced by heterotopic heart transplantation or partial LV unloading (PU, n = 10) by heterotopic heart-lung transplantation. Information obtained from serial echocardiography, 2-deoxy-2[(18)F]fluoro-d-glucose ((18)F-FDG)-positron emission tomography, and an LV pressure-volume catheter were used to evaluate the morphology, glucose metabolism, and hemodynamic performance of the orthotopic hearts and heterotopic transplants over 4 weeks. Cell size, collagen content, tissue cytokines (interleukin [IL]-1α, IL-2, IL-6, IL-10, tumor necrosis factor-α, and vascular endothelial growth factor), and matrix metalloproteinase-2 and -9 were also determined. The recorded parameters included LV end-systolic dimension, LV end-diastolic dimension, posterior wall thickness, diastolic interventricular septum thickness, LV fractional shortening, and LV ejection fraction. RESULTS We demonstrated an LV load-dependent relationship using echo-based structural (left posterior wall thickness, diastolic interventricular septum thickness, and left ventricular end-diastolic dimension) and functional (LV fractional shortening and LV ejection fraction) parameters, as well as an (18)F-FDG uptake (all p < 0.05). This load-dependent relationship was also evidenced in measurements from the pressure-volume conductance catheter (stroke volume, stroke work, cardiac output, dP/dTmax, and -dP/dTmin; all p < 0.05). Significant myocardial atrophy and fibrosis were observed in unloaded hearts, whereas concentrations of cytokines and matrix metalloproteinases were comparable in both unloading conditions. CONCLUSIONS Partial and complete unloading affected the remodeling of non-failing hearts in a rodent model to different extents on myocardial atrophy, fibrosis, glucose metabolism, and mechanical work. Cardiac atrophy is the prominent change after mechanical unloading, which exaggerates the proportion of total collagen that is responsible for diastolic dysfunction.
Collapse
|
91
|
Zangrando J, Zhang L, Vausort M, Maskali F, Marie PY, Wagner DR, Devaux Y. Identification of candidate long non-coding RNAs in response to myocardial infarction. BMC Genomics 2014; 15:460. [PMID: 24917243 PMCID: PMC4070571 DOI: 10.1186/1471-2164-15-460] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/04/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) constitute a novel class of non-coding RNAs. LncRNAs regulate gene expression, thus having the possibility to modulate disease progression. In this study, we investigated the changes of lncRNAs expression in the heart after myocardial infarction (MI). RESULTS Adult male C57/BL6 mice were subjected to coronary ligation or sham operation. In a derivation group of 4 MI and 4 sham-operated mice sacrificed 24 hours after surgery, microarray analysis showed that MI was associated with up-regulation of 20 lncRNAs and down-regulation of 10 lncRNAs (fold-change >2). Among these, 2 lncRNAs, called myocardial infarction-associated transcript 1 (MIRT1) and 2 (MIRT2), showed robust up-regulation in the MI group: 5-fold and 13-fold, respectively. Up-regulation of these 2 lncRNAs after MI was confirmed by quantitative PCR in an independent validation group of 8 MI and 8 sham-operated mice (9-fold and 16-fold for MIRT1 and MIRT2, P < 0.001). In a time-course analysis involving 21 additional MI mice, the expression of both lncRNAs peaked 24 hours after MI and returned to baseline after 2 days. In situ hybridization revealed an up-regulation of MIRT1 expression in the left ventricle of MI mice. Expression of MIRT1 and MIRT2 correlated with the expression of multiple genes known to be involved in left ventricular remodeling. Mice with high level of expression of MIRT1 and MIRT2 had a preserved ejection fraction. CONCLUSION Myocardial infarction induces important changes in the expression of lncRNAs in the heart. This study motivates further investigation of the role of lncRNAs in left ventricular remodeling.
Collapse
|
92
|
Liu Y, Maureira P, Selton-Suty C, Folliguet T, Marie PY, Mandry D, Villemot JP, Tran N, Cahn V. Small cardiac hemangioma: a challenge for diagnosis and dilemma for management. Ann Thorac Surg 2014; 97:e11-3. [PMID: 24384214 DOI: 10.1016/j.athoracsur.2013.07.104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 07/08/2013] [Accepted: 07/22/2013] [Indexed: 11/28/2022]
Abstract
A small cardiac tumor in the left ventricle was discovered incidentally in a 53-year-old patient by echocardiography and was further confirmed by magnetic resonance imaging. A clinical diagnosis of "fibroelastoma or myxoma with an atypical location?" was made, and an uneventful surgical resection was carried out in consideration of the potential embolic risk. The histologic analysis revealed a capillary hemangioma. A posteriori, we reviewed the coronary angiography performed 2 years earlier and found a typical "tumor blush" sign. We discuss the diagnostic features of this case and the alternative approaches that could have been chosen, including a conservative approach with close follow-up.
Collapse
|
93
|
Bonnemains L, Odille F, Cherifi A, Marie PY, Pasquier C, Felblinger J. Free-breathing with motion-correction and video projection during cardiac MRI : a paediatric design ! J Cardiovasc Magn Reson 2014. [PMCID: PMC4044961 DOI: 10.1186/1532-429x-16-s1-p319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
94
|
Zhang L, Huttin O, Moulin F, Marie PY, Mandry D. Dynamic changes in myocardial architecture after reperfused acute myocardial infarction (AMI): insights from the prospective REMI study (REmodeling after Myocardial Infarction). J Cardiovasc Magn Reson 2014. [PMCID: PMC4045078 DOI: 10.1186/1532-429x-16-s1-p223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
95
|
Bonnemains L, Villemin T, Escanye JM, Hossu G, Odille F, Vanhuyse F, Felblinger J, Marie PY. Diagnostic and prognostic value of MRI T2 quantification in heart transplant patients. Transpl Int 2013; 27:69-76. [DOI: 10.1111/tri.12222] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/21/2013] [Accepted: 10/20/2013] [Indexed: 12/01/2022]
|
96
|
Verger A, Imbert L, Yagdigul Y, Fay R, Djaballah W, Rouzet F, Fourquet N, Poussier S, Roch V, Le Guludec D, Karcher G, Marie PY. Factors affecting the myocardial activity acquired during exercise SPECT with a high-sensitivity cardiac CZT camera as compared with conventional Anger camera. Eur J Nucl Med Mol Imaging 2013; 41:522-8. [PMID: 24202049 DOI: 10.1007/s00259-013-2617-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 10/14/2013] [Indexed: 10/26/2022]
Abstract
PURPOSE Injected doses are difficult to optimize for exercise SPECT since they depend on the myocardial fraction of injected activity (MFI) that is detected by the camera. The aim of this study was to analyse the factors affecting MFI determined using a cardiac CZT camera as compared with those determined using conventional Anger cameras. METHODS Factors affecting MFI were determined and compared in patients who had consecutive exercise SPECT acquisitions with (201)Tl (84 patients) or (99m)Tc-sestamibi (87 patients) with an Anger or a CZT camera. A predictive model was validated in a group of patients routinely referred for (201)Tl (78 patients) or (99m)Tc-sestamibi (80 patients) exercise CZT SPECT. RESULTS The predictive model involved: (1) camera type, adjusted mean MFI being ninefold higher for CZT than for Anger SPECT, (2) tracer type, adjusted mean MFI being twofold higher for (201)Tl than for (99m)Tc-sestamibi, and (3) logarithm of body weight. The CZT SPECT model led to a +1 ± 26% error in the prediction of the actual MFI from the validation group. The mean MFI values estimated for CZT SPECT were more than twofold higher in patients with a body weight of 60 kg than in patients with a body weight of 120 kg (15.9 and 6.8 ppm for (99m)Tc-sestamibi and 30.5 and 13.1ppm for (201)Tl, respectively), and for a 14-min acquisition of up to one million myocardial counts, the corresponding injected activities were only 80 and 186 MBq for (99m)Tc-sestamibi and 39 and 91 MBq for (201)Tl, respectively. CONCLUSION Myocardial activities acquired during exercise CZT SPECT are strongly influenced by body weight and tracer type, and are dramatically higher than those obtained using an Anger camera, allowing very low-dose protocols to be planned, especially for (99m)Tc-sestamibi and in non-obese subjects.
Collapse
|
97
|
Bousquenaud M, Maskali F, Poussier S, Zangrando J, Marie PY, Boutley H, Fay R, Karcher G, Wagner DR, Devaux Y. Cardioprotective effects of adenosine within the border and remote areas of myocardial infarction. EJNMMI Res 2013; 3:65. [PMID: 24028474 PMCID: PMC3847228 DOI: 10.1186/2191-219x-3-65] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 08/31/2013] [Indexed: 11/17/2022] Open
Abstract
Background Adenosine may have beneficial effects on left ventricular function after myocardial infarction (MI), but the magnitude of this effect on remote and MI areas is controversial. We assessed the long-term effects of adenosine after MI using electrocardiogram-triggered 18 F-fluorodeoxyglucose positron emission tomography. Methods Wistar rats were subjected to coronary ligation and randomized into three groups treated daily for 2 months by NaCl (control; n = 7), 2-chloroadenosine (CADO; n = 8) or CADO with 8-sulfophenyltheophilline, an antagonist of adenosine receptors (8-SPT; n = 8). Results After 2 months, control rats exhibited left ventricular remodelling, with increased end-diastolic volume and decreased ejection fraction. Left ventricular remodelling was not significantly inhibited by CADO. Segmental contractility, as assessed by the change in myocardial thickening after 2 months, was improved in CADO rats compared to control rats (+1.6% ± 0.8% vs. −2.3% ± 0.8%, p < 0.001). This improvement was significant in border (+5.6% ± 0.8% vs. +1.5% ± 0.8%, p < 0.001) and remote (−4.0% ± 1.0% vs. −10.4% ± 1.3%, p < 0.001) segments, but absent in MI segments. Histological analyses revealed that CADO reduced fibrosis, cardiomyocyte hypertrophy and apoptosis. Protective effects of CADO were blunted by 8-SPT. Conclusion Long-term administration of adenosine protects the left ventricle from contractile dysfunction following MI.
Collapse
|
98
|
Clique H, Cheng HLM, Marie PY, Felblinger J, Beaumont M. 3D myocardial T
1
mapping at 3T using variable flip angle method: Pilot study. Magn Reson Med 2013; 71:823-9. [DOI: 10.1002/mrm.24688] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
99
|
Maureira P, Marie PY, Liu Y, Yu F, Poussier S, Maskali F, Groubatch F, Karcher G, Tran N. Sustained therapeutic perfusion outside transplanted sites in chronic myocardial infarction after stem cell transplantation. Int J Cardiovasc Imaging 2013; 29:809-17. [PMID: 23404382 DOI: 10.1007/s10554-012-0147-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Accepted: 10/29/2012] [Indexed: 11/29/2022]
Abstract
This study aimed at comparing long-term variations in the perfusion of chronic myocardial infarction (MI) areas after local injections of autologous bone marrow stem cells (BMSCs). 14 coronary ligated rats with transmural chronic MI (4 months) were used: a control group (n = 7) versus a treated group (n = 7) in which (111)In labeled-BMSCs were directly engrafted on MI areas. By using (111)In/(99m)Tc SPECT and Sestamibi gated-SPECT,. left ventricle perfusion and function were monitored in all animals by serial (99m)Tc-Sestamibi pinhole gated-SPECT over a period of 6 months. Post-therapeutic myocardial perfusion improved as early as 48 h following injection in the 2 groups. This benefice was sustained during the 6-month follow-up in the non-engrafted MI-areas from treated rats (at 6-months: +10 ± 5 %), whereas the engrafted ones, as well as the MI areas from control rats, exhibited progressive deterioration over time (at 6-months: -9 ± 10 % and -5 ± 3 %, respectively). Perfusion enhancement of the chronic MI areas treated by BMSCs transplantation is: (1) marked in the following days, presumably because of an unspecific inflammatory reaction, and (2) sustained over the long term but only outside the sites of cell engraftment, suggesting a distant paracrine effect of transplanted cells.
Collapse
|
100
|
Rolland-Turner M, Goretti E, Bousquenaud M, Léonard F, Nicolas C, Zhang L, Maskali F, Marie PY, Devaux Y, Wagner D. Adenosine stimulates the migration of human endothelial progenitor cells. Role of CXCR4 and microRNA-150. PLoS One 2013; 8:e54135. [PMID: 23326587 PMCID: PMC3541240 DOI: 10.1371/journal.pone.0054135] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 12/10/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Administration of endothelial progenitor cells (EPC) represents a promising option to regenerate the heart after myocardial infarction, but is limited because of low recruitment and engraftment in the myocardium. Mobilization and migration of EPC are mainly controlled by stromal cell-derived factor 1α (SDF-1α) and its receptor CXCR4. We hypothesized that adenosine, a cardioprotective molecule, may improve the recruitment of EPC to the heart. METHODS EPC were obtained from peripheral blood mononuclear cells of healthy volunteers. Expression of chemokines and their receptors was evaluated using microarrays, quantitative PCR, and flow cytometry. A Boyden chamber assay was used to assess chemotaxis. Recruitment of EPC to the infarcted heart was evaluated in rats after permanent occlusion of the left anterior descending coronary artery. RESULTS Microarray analysis revealed that adenosine modulates the expression of several members of the chemokine family in EPC. Among these, CXCR4 was up-regulated by adenosine, and this result was confirmed by quantitative PCR (3-fold increase, P<0.001). CXCR4 expression at the cell surface was also increased. This effect involved the A(2B) receptor. Pretreatment of EPC with adenosine amplified their migration towards recombinant SDF-1α or conditioned medium from cardiac fibroblasts. Both effects were abolished by CXCR4 blocking antibodies. Adenosine also increased CXCR4 under ischemic conditions, and decreased miR-150 expression. Binding of miR-150 to the 3' untranslated region of CXCR4 was verified by luciferase assay. Addition of pre-miR-150 blunted the effect of adenosine on CXCR4. Administration of adenosine to rats after induction of myocardial infarction stimulated EPC recruitment to the heart and enhanced angiogenesis. CONCLUSION Adenosine increases the migration of EPC. The mechanism involves A(2B) receptor activation, decreased expression of miR-150 and increased expression of CXCR4. These results suggest that adenosine may be used to enhance the capacity of EPC to revascularize the ischemic heart.
Collapse
|