Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 13/03/2024
• Auteurs : Nina GrandremyPaul BourriauEdwin DachéMarie-Madeleine DanielouMathieu DorayChristine DupuyBertrand ForestLaetitia JalabertMartin HuretSophie Le MestreAntoine NowaczykPierre PetitgasPhilippe PineauJustin RouxelMorgan TardivelJean-Baptiste Romagnan
• Organismes : Dynamique et durabilité des écosystèmes : de la source à l’océan Dynamique et durabilité des écosystèmes : de la source à l’océan Biologie et Ecologie des Ecosystèmes Marins Profonds Unité Dynamiques des Écosystèmes Côtiers Dynamique et durabilité des écosystèmes : de la source à l’océan La Rochelle Université LIttoral ENvironnement et Sociétés Unité Recherches et Développements Technologiques Institut de la Mer de Villefranche Dynamique et durabilité des écosystèmes : de la source à l’océan Dynamique et durabilité des écosystèmes : de la source à l’océan Environnements et Paléoenvironnements OCéaniques Institut Français de Recherche pour l'Exploitation de la Mer LIttoral ENvironnement et Sociétés Unité Recherches et Développements Technologiques Institut Français de Recherche pour l'Exploitation de la Mer Unité Recherches et Développements Technologiques Dynamique et durabilité des écosystèmes : de la source à l’océan
• Publié dans Earth System Science Data le 23/10/2020

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Résumé : This paper presents two metazoan zooplankton datasets obtained by imaging samples collected on the Bay of Biscay continental shelf in spring during the PELGAS (PELagique GAScogne) integrated surveys over the 2004–2019 period. The samples were collected at night with a 200 µm mesh-size WP2 net fitted with a Hydrobios (back-run stop) mechanical flowmeter and hauled vertically from the sea floor to the surface, with the maximum depth set at 100 m when the bathymetry was deeper than this. The first dataset originates from samples collected from 2004 to 2016 and imaged on land with the ZooScan and is composed of 1 153 507 imaged and measured objects. The second dataset originates from samples collected from 2016 to 2019 and imaged onboard the R/V Thalassa with the ZooCAM and is composed of 702 111 imaged and measured objects. The imaged objects are composed of zooplankton individuals, zooplankton pieces, non-living particles and imaging artefacts ranging from 300 µm to 3.39 mm in equivalent spherical diameter which were individually imaged, measured and identified. Each imaged object is geolocated and associated with a station, a survey, a year and other metadata. Each object is described by a set of morphological and grey-level-based features (8 bit encoding, 0 = black, 255 = white), including size, that were automatically extracted from each individual image. Each object was taxonomically identified using the web-based application Ecotaxa with built-in random-forest and CNN-based semi-automatic sorting tools, which was followed by expert validation or correction. The objects were sorted into 172 taxonomic and morphological groups. Each dataset features a table combining metadata and data at individual-object granularity from which one can easily derive quantitative population and community descriptors such as abundances, mean sizes, biovolumes, biomasses and size structure. Each object's individual image is provided along with the data. These two datasets can be used in combination for ecological studies, as the two instruments are interoperable, or they can be used as training sets for ZooScan and ZooCAM users. The data presented here are available at the SEANOE dataportal: https://doi.org/10.17882/94052 (ZooScan dataset, Grandremy et al., 2023c) and https://doi.org/10.17882/94040 (ZooCAM dataset, Grandremy et al., 2023d).

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Fichiers liés : essd-16-1265-2024.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 13/03/2024
• Auteurs : Nina GrandremyPaul BourriauEdwin DachéMarie-Madeleine DanielouMathieu DorayChristine DupuyBertrand ForestLaetitia JalabertMartin HuretSophie Le MestreAntoine NowaczykPierre PetitgasPhilippe PineauJustin RouxelMorgan TardivelJean-Baptiste Romagnan
• Organismes : Dynamique et durabilité des écosystèmes : de la source à l’océan Dynamique et durabilité des écosystèmes : de la source à l’océan Biologie et Ecologie des Ecosystèmes Marins Profonds Unité Dynamiques des Écosystèmes Côtiers Dynamique et durabilité des écosystèmes : de la source à l’océan LIttoral ENvironnement et Sociétés Unité Recherches et Développements Technologiques Institut de la Mer de Villefranche Dynamique et durabilité des écosystèmes : de la source à l’océan Dynamique et durabilité des écosystèmes : de la source à l’océan Environnements et Paléoenvironnements OCéaniques Institut Français de Recherche pour l'Exploitation de la Mer LIttoral ENvironnement et Sociétés Unité Recherches et Développements Technologiques Unité Recherches et Développements Technologiques Dynamique et durabilité des écosystèmes : de la source à l’océan
• Publié dans Earth System Science Data le 23/10/2020

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Résumé : This paper presents two metazoan zooplankton datasets obtained by imaging samples collected on the Bay of Biscay continental shelf in spring during the PELGAS integrated surveys, over the 2004–2019 period. The samples were collected at night, with a WP2 200 µm mesh size fitted with a Hydrobios (back-run stop) mechanical flowmeter, hauled vertically from the sea floor to the surface with a maximum depth set at 100 m when the bathymetry is deeper. The first dataset originates from samples collected from 2004 to 2016, imaged on land with the ZooScan and is composed of 1,153,507 imaged and measured objects. The second dataset originates from samples collected from 2016 to 2019, imaged on board the R/V Thalassa with the ZooCAM and is composed of 702,111 imaged and measured objects. The imaged objects is composed of zooplankton individuals, zooplankton pieces, non-living particles and imaging artefacts, ranging from 300 µm to 3.39 mm Equivalent Spherical Diameter, individually imaged, measured and identified. Each imaged object is geolocated, associated to a station, a survey, a year and other metadata. Each object is described by a set of morphological and grey level based features (8 bits encoding, 0 = black, 255 = white), including size, automatically extracted on each individual image. Each object was taxonomically identified using the web based application Ecotaxa with built-in, random forest and CNN based, semi-automatic sorting tools followed by expert validation or correction. The objects were sorted in 172 taxonomic and morphological groups. Each dataset features a table combining metadata and data, at the individual object granularity, from which one can easily derive quantitative population and communities descriptors such as abundances, mean sizes, biovolumes, biomasses, and size structure. Each object’s individual image is provided along with the data. These two datasets can be used combined together for ecological studies as the two instruments are interoperable, or as training sets for ZooScan and ZooCAM users.

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Fichiers liés : essd-16-1265-2024.pdf

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• Type de publi. : Communication dans un congrès
• Date de publi. : 11/03/2024
• Auteurs : Boubacar DiarraKarine GuillouardMeryem OuzzifPhilippe MerleJean-Bernard Stefani
• Organismes : Orange Innovation Orange Innovation Orange Innovation Self-adaptation for distributed services and large software systems Sound Programming of Adaptive Dependable Embedded Systems

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Résumé : Kubernetes has emerged as the leading platform for orchestrating cloud-native network functions (CNF). The description of the hardware and software architecture of systems to be deployed with Kubernetes is defined in configuration files called manifests. In order to address the errors that these manifests may contain, manifest verification tools have been developed. However, evaluating and selecting the most appropriate verification tool for a given project is a difficult task. To facilitate this evaluation process, we identified and characterized the most relevant verification capabilities, useful also in the CNF context. The selected capabilities serve as criteria for the evaluation of manifest verification tools. In total, we have identified 13 criteria, like the variety of verification types or the ability to carry out JSON Schema-based verification. The identified criteria were used to evaluate 16 of the most commonly used verification tools in the Kubernetes community. This evaluation revealed several shortcomings in the existing tools.

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Fichiers liés : icin-camera-ready.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 09/03/2024
• Auteurs : Oumaima MoubsetDenis FillouxHugo FontèsCharlotte JulianEmmanuel FernandezSerge GalziLaurence BlondinSélim Ben ChehidaJean-Michel LettFrançois MesléardSimona KrabergerJoy M CusterAndrew SalywonElizabeth MakingsArmelle MaraisFrédéric ChiroleuPierre LefeuvreDarren MartinThierry CandresseArvind VarsaniVirginie RavignéPhilippe Roumagnac
• Organismes : Plant Health Institute of Montpellier Département Systèmes Biologiques Plant Health Institute of Montpellier Institut méditerranéen de biodiversité et d'écologie marine et continentale Institut de recherche de la Tour du Valat Plant Health Institute of Montpellier Plant Health Institute of Montpellier Plant Health Institute of Montpellier Département Systèmes Biologiques Plant Health Institute of Montpellier Peuplements végétaux et bioagresseurs en milieu tropical Peuplements végétaux et bioagresseurs en milieu tropical Département Systèmes Biologiques Institut méditerranéen de biodiversité et d'écologie marine et continentale Institut de recherche de la Tour du Valat Arizona State University [Tempe] Arizona State University [Tempe] Desert Botanical Garden Arizona State University [Tempe] Biologie du fruit et pathologie Peuplements végétaux et bioagresseurs en milieu tropical Peuplements végétaux et bioagresseurs en milieu tropical Laboratoire de Matériaux Céramiques et de Mathématiques University of Cape Town Biologie du fruit et pathologie Arizona State University [Tempe] University of Cape Town Plant Health Institute of Montpellier Plant Health Institute of Montpellier
• Publié dans Virus Evolution le 25/01/2017

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Résumé : The increase in human-mediated introduction of plant species to new regions has resulted in a rise of invasive exotic plant species (IEPS) that has had significant effects on biodiversity and ecosystem processes. One commonly accepted mechanism of invasions is that proposed by the enemy release hypothesis (ERH), which states that IEPS free from their native herbivores and natural enemies in new environments can outcompete indigenous species and become invasive. We here propose the virome release hypothesis (VRH) as a virus-centered variant of the conventional ERH that is only focused on enemies. The VRH predicts that vertically transmitted plant-associated viruses (PAV, encompassing phytoviruses and mycoviruses) should be co-introduced during the dissemination of the IEPS, while horizontally transmitted PAV of IEPS should be left behind or should not be locally transmitted in the introduced area due to a maladaptation of local vectors. To document the VRH, virome richness and composition as well as PAV prevalence, co-infection, host range, and transmission modes were compared between indigenous plant species and an invasive grass, cane bluestem (Bothriochloa barbinodis), in both its introduced range (southern France) and one area of its native range (Sonoran Desert, Arizona, USA). Contrary to the VRH, we show that invasive populations of B. barbinodis in France were not associated with a lower PAV prevalence or richness than native populations of B. barbinodis from the USA. However, comparison of virome compositions and network analyses further revealed more diverse and complex plant-virus interactions in the French ecosystem, with a significant richness of mycoviruses. Setting mycoviruses apart, only one putatively vertically transmitted phytovirus (belonging to the Amalgaviridae family) and one putatively horizontally transmitted phytovirus (belonging to the Geminiviridae family) were identified from B. barbinodis plants in the introduced area. Collectively, these characteristics of the B. barbinodis-associated PAV community in southern France suggest that a virome release phase may have immediately followed the introduction of B. barbinodis to France in the 1960s or 1970s, and that, since then, the invasive populations of this IEPS have already transitioned out of this virome release phase, and have started interacting with several local mycoviruses and a few local plant viruses.

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Fichiers liés : Moubset-VE-2024-CC-BY-NC.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 05/03/2024
• Auteurs : Sybren de HoogThomas WalshSarah A AhmedAna Alastruey-IzquierdoBarbara D AlexanderMaiken Cavling ArendrupEsther BabadyFeng-Yan BaiJoan-Miquel Balada-LlasatAndrew BormanAnuradha ChowdharyAndrew ClarkRobert C ColgroveOliver A CornelyTanis C DinglePhilippe J DufresneJeff FullerJean-Pierre GangneuxConnie GibasHeather GlasgowYvonne GraserJacques GuillotAndreas H. GrollGerhard HaaseKimberly HansonAmanda HarringtonDavid L HawksworthRandall T HaydenMartin HoeniglVit HubkaKristie JohnsonJulianne V KusRuoyu LiJacques MeisMichaela LacknerFanny LanternierSixto Leal Jr.Francesca LeeShawn LockhartPaul LuethyIsabella MartinKyung J Kwon-ChungWieland MeyerM. Hong NguyenLuis Ostrosky-ZeichnerElizabeth PalavecinoPreeti PancholiPeter G PappasGary W ProcopScott A RedheadDaniel D RhoadsStefan RiedelBryan StevensKaede Ota SullivanPaschalis VergidisEmmanuel RoilidesAmir SeyedmousaviLili TaoVania A VicenteRoxana G VitaleQi-Ming WangNancy L WengenackLars WestbladeNathan P WiederholdP. Lewis WhiteChristina M WojewodaSean X Zhang
• Organismes : Radboud University Medical Center [Nijmegen] Peking University [Beijing] University of Maryland School of Medicine National Institute of Neurological Disorders and Stroke [Bethesda] Instituto de Salud Carlos III [Madrid] Duke University [Durham] Copenhagen University Hospital [Denmark] = Københavns Universitetshospital [Danmark] Memorial Sloan Kettering Cancer Center Chinese Academy of Sciences [Beijing] University of Delhi University of Glasgow Universität zu Köln = University of Cologne Archéosciences Bordeaux Archéosciences Bordeaux Institut de recherche en santé, environnement et travail Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou] Archéosciences Bordeaux Charité - UniversitätsMedizin = Berlin University Medicine École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique SFR UA 4208 Interactions Cellulaires et Applications Thérapeutiques Infections Respiratoires Fongiques University of Delhi RWTH Aachen University = Rheinisch-Westfälische Technische Hochschule Aachen Institut Pasteur [Paris] University of Texas Health Science Center University of Vermont [Burlington] Johns Hopkins University School of Medicine [Baltimore]
• Publié dans Journal of Clinical Microbiology le 01/11/2020

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Fichiers liés : de Hoog et al. - 2024 - Reply to Kidd et al., Inconsistencies within the .pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 04/03/2024
• Auteurs : Fabio d'AndreaJean-Philippe DuvelGwendal RivièreRobert VautardChristophe CassouJulien CattiauxDim CoumouDavide FarandaTamara HappéAglaé JézéquelAurélien RibesPascal Yiou
• Organismes : Laboratoire de Météorologie Dynamique (UMR 8539) Laboratoire de Météorologie Dynamique (UMR 8539) Institut Pierre-Simon-Laplace Climat, Environnement, Couplages et Incertitudes [Toulouse] Centre national de recherches météorologiques Laboratoire de Météorologie Dynamique (UMR 8539) London Mathematical Laboratory Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] Extrèmes : Statistiques, Impacts et Régionalisation Centre national de recherches météorologiques Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] Extrèmes : Statistiques, Impacts et Régionalisation
• Publié dans Geophysical Research Letters le 25/10/2020

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Résumé : Mid-tropospheric deep depressions in summer over the North Atlantic are shown to have strongly increased in the eastern and strongly decreased in the western North Atlantic region. This evolution is linked to a change in baroclinicity in the west of the North Atlantic ocean and over the North American coast, likely due to the increased surface temperature there. Deep depressions in the Eastern North Atlantic are linked to a temperature pattern typical of extreme heat events in the region. The same analysis is applied to a sample of CMIP6 model outputs, and no such trends are found. This study suggests a link between the observed increase of summer extreme heat events in the region and the increase of the number of Atlantic depressions. The failure of CMIP6 models to reproduce these events can consequently also reside in an incorrect reproduction of this specific feature of midlatitude atmospheric dynamics. Plain Language Summary Extreme temperatures events in Western Europe have been rising fast, and current global climate models are not able to reproduce this excess. There are different hypotheses to explain this discrepancy. One is that the large-scale atmospheric dynamics, responsible for the local weather, is not correctly represented by the models: indeed, the frequency and amplitude of some specific weather phenomena have been shown to be insufficiently reproduced, especially in summer. Here, we study one such phenomenon, namely the transient deep depressions, or extratropical cyclones, that travel across the Atlantic basin. A significant large increase of the number of these events is found in summer in the region of the North Atlantic off the western European coast. Depressions in that region are accompanied by high temperatures in continental western Europe. An ensemble of state of the art climate models are also analyzed and none of them is able to correctly reproduce the frequency of deep depressions nor their large trend, which suggests a common origin with the insufficient prediction of western European extreme heat events. Great caution should be used when analyzing climate change predictions in the region, and even more so when studying changes in complex dynamical phenomena.

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Fichiers liés : Geophysical Research Letters - 2024 - D'Andrea - Summer Deep Depressions Increase Over the Eastern North Atlantic.pdf

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• Type de publi. : Rapport
• Date de publi. : 04/03/2024
• Auteurs : Emilie GovalEmmanuelle AllartPierre AntoinePatrick AugusteJean-Jacques BahainAxel BeauchampPaule CoudretSylvie CoutardKarine Dautel DevreeseRudy DebiakPascal DepaepeLaurent DeschodtJean-Pierre FagnartPhilippe FerayCaroline FontDavid HérissonMarina PagliJennifer LantoineJean‑luc LochtOlivier MoineClément ParisJulie PerrotteNoémie SévêqueLuc Vallin
• Organismes : Histoire naturelle de l'Homme préhistorique Ministère de la Culture et de la Communication Ministère de la Culture et de la Communication Laboratoire de géographie physique : Environnements Quaternaires et Actuels Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 Histoire naturelle de l'Homme préhistorique Muséum national d'Histoire naturelle Centre de Recherche en Archéologie, Archéosciences, Histoire Direction de l'Archéologie du Pas-de-Calais Institut national de recherches archéologiques préventives Laboratoire de géographie physique : Environnements Quaternaires et Actuels Palais des Beaux-Arts de Lille Institut national de recherches archéologiques préventives Institut national de recherches archéologiques préventives Histoire naturelle de l'Homme préhistorique Institut national de recherches archéologiques préventives Laboratoire de géographie physique : Environnements Quaternaires et Actuels Conseil général de la Somme - Centre archéologique départemental Institut national de recherches archéologiques préventives Institut national de recherches archéologiques préventives Centre National de la Recherche Scientifique Archéologies et Sciences de l'Antiquité Anthropologie des techniques, des espaces et des territoires au Pliocène et au Pléistocène Ministère de la Culture et de la Communication Archéologies et Sciences de l'Antiquité Anthropologie des techniques, des espaces et des territoires au Pliocène et au Pléistocène Institut national de recherches archéologiques préventives Institut national de recherches archéologiques préventives Laboratoire de géographie physique : Environnements Quaternaires et Actuels Laboratoire de géographie physique : Environnements Quaternaires et Actuels Institut national de recherches archéologiques préventives Archéologies et Sciences de l'Antiquité Université Paris Nanterre Anthropologie des techniques, des espaces et des territoires au Pliocène et au Pléistocène GeoArchEon SARL Archéologie et histoire ancienne : Méditerranée - Europe Ministère de la Culture et de la Communication

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Résumé : Ce rapport de décompose en trois sections, la première rassemble la documentation administrative, la seconde rappelle la problématique générale du projet et présente les résultats obtenus, la troisième se compose des annexes. Sauf mention contraire en tête de chapitre les textes et la mise en page sont réalisés par Emilie Goval.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 03/03/2024
• Auteurs : Salvatore TeresiPaolo SgarroAurélie KandazoglouThéo FrottierMaxime CulotWilliams Savero TorresChadi Al KhatibMaxen Cosset-CheneauCécile GrèzesPierre NoéLouis HutinKevin GarelloLorena AnghelGuillaume PrenatLaurent VilaManuel BibesJean-Philippe Attané
• Organismes : SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants SPINtronique et TEchnologie des Composants Laboratoire Albert Fert (ex-UMPhy Unité mixte de physique CNRS/Thales) SPINtronique et TEchnologie des Composants

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Résumé : We report a new approach to generate and detect spin currents by exploiting the interplay between spin-orbit effects and ferroelectricity, in two classes of materials: two-Dimensional Electron Gases (2DEGS) appearing at oxides surfaces or interfaces [1], and ferroelectric Rashba semiconductors [2]. While spintronics has traditionally relied on ferromagnetic metals as spin generators and detectors, efficient spin-charge interconversion enabled by spin-orbit coupling in non-magnetic systems has drawn considerable interest in recent years, in a new field called spinorbitronics.Our results demonstrate that the spin-to-charge conversion, due to the spin-orbit coupling, can be controlled in sign in a remanent way, through the ferroelectric polarization. Such a control can lead to the emergence of a ferroelectric spintronics, which could result in a large reduction of the power consumption of non-volatile spintronic devices. It also provides a way for a non-destructive readout of ferroelectric states.

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• Type de publi. : Article dans une revue
• Date de publi. : 02/03/2024
• Auteurs : Maurice MugabowindekweMartin BrandtAthanase MukuralindaPhilippe CiaisFlorian ReinerAnkit KariryaaChristian IgelJérôme ChaveOle MertzPierre HiernauxXiaoye TongGaspard RwanyiziriDimitri GominskiSizhuo LiSiyu LiuIvan GasangwaYves HategekimanaAlain NdoliJean NduwamunguSassan SaatchiRasmus Fensholt
• Organismes : Department of Geosciences and Natural Resource Management [Copenhagen] Department of Geosciences and Natural Resource Management [Copenhagen] Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] Department of Geosciences and Natural Resource Management [Copenhagen] Department of Geosciences and Natural Resource Management [Copenhagen] Department of Geosciences and Natural Resource Management [Copenhagen] Department of Geosciences and Natural Resource Management [Copenhagen] Department of Geosciences and Natural Resource Management [Copenhagen]
• Publié dans Communications Earth & Environment le 27/10/2020

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Résumé : Abstract Landscape restoration initiatives are mainly focusing on forest regeneration and agroforestry, especially in the Global South. However, due to a lack of monitoring tools, the carbon balance of restoration efforts remains poorly quantified. Here, we use satellite images from 2008 and 2019 to calculate carbon stocks for individual trees in Rwanda, a country which has been actively engaged in restoration activities over the past decade. We show that smallholder farmers on average planted about 3 trees per farm during 2008–2019, contributing about 50.4 million new trees at the national scale. The overall C sink of the new farmland trees was 0.13 Megagrams of Carbon per hectare per year, which is 6 times lower than gains observed from restoration of degraded forests (0.76 Megagrams of Carbon per hectare per year). If national greenhouse gas emissions remain at the level of 2019, agroforestry (~61% of national area coverage) and continued restoration of degraded natural forests (~0.5% of national area coverage) have the potential to offset about 80% of the national emissions before 2050. Our work monitors and quantifies progress and impact of landscape restoration projects and outlines a pathway to engage smallholder farmers with a limited number of on-farm trees into the expanding carbon market.

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Fichiers liés : s43247-024-01278-x.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/03/2024
• Auteurs : Guillaume PerrinElisabeth MolinierBenjamin GoryMaeva KyhengJulien LabreucheMarco PasiKevin JanotRomain BourcierIgor SibonArturo ConsoliJean-Philippe DesillesJean-Marc OlivotChrysanthi PapagiannakiSébastien SoizeJean-Christophe GentricCyril DargazanliJildaz CaroffRaoul PopOlivier NaggaraSolène MoulinOmer EkerQuentin AliasFrédéric ClarençonBertrand LapergueGaultier Marnat
• Organismes : Centre Hospitalier Régional Universitaire de Tours Centre Hospitalier Régional Universitaire de Tours Imagerie Adaptative Diagnostique et Interventionnelle Centre Hospitalier Régional Universitaire de Nancy Centre Hospitalier Régional Universitaire [CHU Lille] Centre Hospitalier Régional Universitaire [CHU Lille] Centre Hospitalier Régional Universitaire de Tours Centre Hospitalier Régional Universitaire de Tours Centre Hospitalier Universitaire de Nantes = Nantes University Hospital Centre Hospitalier Universitaire de Bordeaux Hôpital Foch [Suresnes] Fondation Ophtalmologique Adolphe de Rothschild [Paris] Centre Hospitalier Universitaire de Toulouse CHU Rouen Hôpital universitaire Robert Debré [Reims] Centre Hospitalier Régional Universitaire de Brest CHU Montpellier = Montpellier University Hospital Hôpital Bicêtre [GHU AP-HP. Université Paris-Saclay, Le Kremlin-Bicêtre] Centre Hospitalier Universitaire [Strasbourg] Centre Hospitalier Sainte-Anne [Paris] Hôpital universitaire Robert Debré [Reims] Service de neuroradiologie [Lyon] Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou] CHU Pitié-Salpêtrière [AP-HP] Hôpital Foch [Suresnes] Centre Hospitalier Universitaire de Bordeaux
• Publié dans Journal de Neuroradiologie / Journal of Neuroradiology le 26/10/2020

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Résumé : Background: The clinical benefit of mechanical thrombectomy(MT) for stroke patients with tandem occlusion is similar to that of isolated intracranial occlusions. However, the management of cervical internal carotid artery(ICA) occlusion during the MT, particularly in the setting of carotid dissection, remains controversial. We aimed to investigate the clinical impact of cervical ICA patency at day 1 on 3-month functional outcome. Methods: We collected data from the Endovascular Treatment in Ischemic Stroke, a prospective national registry in 30 French centers performing MT between January 2015 and January 2022. Inclusion criteria were consecutive tandem occlusions related to cervical ICA dissection treated with MT. Tandem occlusions of other etiology, isolated cervical ICA occlusions without intracranial thrombus and patients without day-1 ICA imaging were excluded. Primary endpoint was the 3-month functional outcome. Secondary endpoints included intracranial hemorrhage(ICH), excellent outcome, mortality and early neurological improvement. A sensitivity analysis was performed in patients with intracranial favorable recanalization after MT. Results: During the study period, 137 patients were included of which 89(65%) presented ICA patency at day 1. The odds of favorable outcome did not significantly differ between patients with patent and occluded ICA at day 1(68.7 vs 59.1%;aOR=1.30;95%CI 0.56-3.00,p=0.54). Excellent outcome, early neurological improvement, mortality and ICH were also comparable between groups. Sensitivity analysis showed similar results. Conclusion: ICA patency at day 1 in patients with tandem occlusions related to dissection did not seem to influence functional outcome. Endovascular recanalization of the cervical ICA including stenting might not be systematically required in this setting.

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Fichiers liés : PERRIN_2024.pdf

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