Canal-U

Mon compte
LE STUDIUM Loire Valley Institute for Advanced Studies

Dr Christine Paillard - The Brown Ring disease in clams, a double-edged defense mechanism for shell disease recovery!


Copier le code pour partager la vidéo :
<div style="position:relative;padding-bottom:56.25%;padding-top:10px;height:0;overflow:hidden;"><iframe src="https://www.canal-u.tv/video/le_studium/embed.1/dr_christine_paillard_the_brown_ring_disease_in_clams_a_double_edged_defense_mechanism_for_shell_disease_recovery.60613?width=100%&amp;height=100%" style="position:absolute;top:0;left:0;width:100%;height: 100%;" width="550" height="306" frameborder="0" allowfullscreen scrolling="no"></iframe></div> Si vous souhaitez partager une séquence, indiquez le début de celle-ci , et copiez le code : h m s
Contacter la chaine
J’aime
Imprimer
partager facebook twitter

Dr Christine Paillard - The Brown Ring disease in clams, a double-edged defense mechanism for shell disease recovery!

Brown Ring disease is caused by Vibrio tapetis, which, by adhering to newly secreted shell matrices, interferes with the biomineralization process. Colonization and alteration of the matrices induce the deposit of conchiolin on the inner surface of the valves, forming a characteristic brown deposit instead of contributing to shell growth. This defense mechanism consists firstly in coating the bacteria within the organic layers of melanized matrices, and secondly in covering the brown deposit with shell layers to achieve complete healing of the shell. This defense phenotype varies greatly depending on, (1) the host physiology, its immune response and its microbiota, (2) the pathogen virulence and its capacity to modulate shell fluid pH, and (3) the environmental conditions. The first barriers V. tapetis faces, the mantle epithelium and the extrapallial fluids, react rapidly and hemocytosis and the activation of enzymes. This early immune response does not induce a decrease of host physiological parameters, suggesting a commensal relationship. On the other hand, in advanced stages of disease or incomplete recovery, the microparasite induces immunodepression and interrupted shell growth, clearly showing trade-offs between immune defense and biomineralization processes. Thus, in the context of Brown Ring Disease, immunity and shell repair processes interact closely either in synergy or as trade-offs depending on their position along the mutualism-parasitism interaction gradient.

 


  •  
  •  
    Date de réalisation : 24 Mars 2021
    Durée du programme : 20 min
    Classification Dewey : Biochimie
  •  
    Catégorie : Conférences
    Niveau : Tous publics / hors niveau
    Disciplines : Chimie
    Collections : LE STUDIUM Conferences, Innate immunity in a biomineralized context: trade-offs or synergies?
    ficheLom : Voir la fiche LOM
  •  
  •  
    Langue : Anglais
    Mots-clés : coquillage
    Conditions d’utilisation / Copyright : @LE STUDIUM 2021
 

commentaires


Ajouter un commentaire Lire les commentaires
*Les champs suivis d’un astérisque sont obligatoires.
Aucun commentaire sur cette vidéo pour le moment (les commentaires font l’objet d’une modération)
 

Dans la même collection

 Juan Matos - H2 production on 1D and 2D Carbon-containing Fe-, Co, and Ni-based foamy catalysts.
 Athanasios G. Konstandopoulos - Material and Reactor Technologies for Solar Fuels
 Sixto Malato - Solar photocatalytic hydrogen production at pilot scale
 Pascal Brault - Reactive molecular dynamics simulations of H2 production and conversion
 Olivier Joubert - Brief Overview of Current French Hydrogen Research Activities, Focus on Materials
 Ally Aukaloo - From molecular to nanostructured materials for artificial photosynthesis
 Giuseppe Marci - Photocatalytic reduction of CO2 in gas-solid and in liquid-solid regimes
 Alejandro Anson-Casaos - Photoelectrochemical characterization of C/TiO2 and C/ZnO nanomaterials in aqueous electrolyte
 José Solla-Gullon - Recent advances and remaining challenges on the use of shape-controlled-metal nanoparticles in Electrocatalysis
 Christel Laberty-Robert - Impact of Electrodes Nanostructuration on Photoelectrochemical Performances
 Carlos Sanchez - Electrolyte engineering for electrochemical CO2 reduction
 Joaquim Faria - Carbon geometries as the base concept for developing efficient photocatalysts
 Geyla Dubed Bandomo - CO2 conversion with {Mn(CO)3Br} molecular sites into Covalent-Organic Frameworks
 Jesus Iniesta - Electrochemical and structural characterization of mixed matrix membrane coated electrodes for CO2 electroreduction
 Hermenegildo García - Getting closer to a large scale process. Photocatalysts for light-assisted CO2 hydrogenation
 Beatriz Avila - CO2 electroreduction to formate on Sn, Bi and Sb nanostructured electrodes: from fundamental studies to practical devices
 Prof. Marc McKee & Prof. Maxwell Hincke - Integrative workshop - Lessons learned and the path forward for innate immunity in biomineralization
 Dr Robbie Rae - Biological armour used to kill parasites
 Dr Sophie Berland - Probing the mechanical properties and biochemical defence offered by shell matrix proteins in bivalves
 Dr Frédéric Marin - Mollusk shell matrices: unexpected functions in biomineralization
 Dr Joël Gautron - Integrative workshop - Avian eggshell biomineralization and innate immunity
 Dr Natalie Reznikov - Application of deep learning for segmentation of 3D images in biomineralization
 Dr Claudine Blin - The innate immune function and diversity of osteoclasts
 Dr Nicolas Guyot - Phylogenetic and structural evolution of egg antimicrobial proteins and peptides
 Prof. Maxwell Hincke - The chroriallantoic membrane: insight from proteomics.
 Dr Ian Dunn - The genetics and function of the cuticle, the eggs antimicrobial outer barrier.
 Dr Sophie Réhault-Godbert - The eggshell microbiome
 Dr Liliana D’Alba - Eggshell mineralization in relation to nesting ecology in reptiles
 Prof. Alejandro Rodriguez Navarro - Mechanisms of eggshell biomineralization
 Prof. Marc McKee - The structure of avian (chicken) eggshell
 Prof. Bernd Kaspers - The developing immune system of the chicken embryo
 Dr Tim Badman - Natureculture approaches in the World Heritage Convention, and beyond.
 Dr Tim Jardine - Canada’s freshwater deltas as complex and vulnerable social-ecological systems.
 Nupur Prothi Khanna - Cultural landscapes of Water systems in Asia
 Dave Pritchard - Action for culture and the water environment through the Ramsar Convention on Wetlands
 Dr Avril Horne - Participatory environmental flows assessments
 Dr Erin O'Donnell - Reshaping the human relationship with water: what happens when a river becomes a person?
 Dr Wendy Monk & Prof. André St-Hilaire - Adapting social-cultural-environmental flows for cold regions.
 Dr Nathalie Richards - From the Mau Forest to Lake Victoria: The Journey of the Mara River in East Africa
 Dr Fengzhi He & Dr Rebecca Tharme - Freshwater megafauna: diversity, status, and cultural importance
 Dr Simone Langhans - Weaving together plural values in freshwater management: a case study of the Upper Clutha catchment in Aotearoa New Zealand
 Prof. Karl Wantzen - Development(s) of the River Culture Concept
 Prof. Angela Arthington - Progress with environmental flows to maintain healthy rivers and healthy societies
 Dr Elżbieta Sikora - Supercritical CO2 plant extracts as raw materials in modern cosmetic formulations
 Dr Magdalena Malinowska - Grape cane extracts a natural ingredients with cosmetic activities
 Dr Paweł Siudem - Aronia melanocarpa Fruits as a Dietary Source of bioactive compounds: 1H‑NMR, HPLC-DAD, and Chemometric Studies
 Dr Viviana Martins - Potential of vineyard calcium sprays to improve grape berry and wine quality
 Prof Régis Gougeon - Messages in a bottle: from oenolomics to the structural resolution of the transient chemistry of wine aging
 PANEL 5: NÉOLIBÉRALISME, AUTORITARISME ET NÉO-CONSERVATISME
 PANEL 6: THE CAPITALISM’S WAR ON HUMAN LIVES
 PANEL 4: LA VALEUR NÉOLIBÉRALE DE L’HUMAIN
 PANEL 3: LA VIOLENCE DU GOUVERNEMENT NÉOLIBÉRAL
 PANEL 2: LE NÉOLIBÉRALISME ET LA “GUERRE CIVILE MONDIALE"
 PANEL 1: THE NEOLIBERAL PANDEMIC (DIS)ORDER, CARING AND SOLIDARITIES
 Prof. Kingston Mills - Local T cells and their subversion in protective immunity to infection in the respiratory tract
 Prof. Adrian Martineau - Vitamin D in the prevention and treatment of respiratory infections
 Dr Antoine Guillon - Flagellin-based antibacterial strategy and clinical perspectives
 Prof. Mike Surette - The Good and the Bad of Commensal-Pathogen Interactions in the Airways
 Dr Raphaël Duivenvoorden - Trained Immunity as a novel therapeutic strategy
 Dr Mustapha Si-Tahar - Towards a metabolic anti-influenza therapy
 Dr Aurélie Crabbé - Host metabolites modulate bacterial susceptibility to antibiotics
 Dr Guido Santos - Multi-level computational modeling as a tool to understand molecular mechanisms behind bacterial lung infection
 Dr Rodrigo Guabiraba - Precision cut lung slices: a novel versatile tool to examine host–pathogen interactions in the chicken lung
 Prof. Pieter Hiemstra - Antimicrobial Host Defence Peptides: Immunomodulatory Functions and Translational Prospects
FMSH
 
Facebook Twitter
Mon Compte