INTERPLAY BETWEEN CYPRINID 3 (CYHV-3/KHV) AND...
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![Page 1: INTERPLAY BETWEEN CYPRINID 3 (CYHV-3/KHV) AND …carpconference.hgk.hr/wp-content/uploads/2017/07/Rakus.K-Zagreb-1.… · herpesvirus 3 (cyhv-3/khv) and common carp body temperature](https://reader034.fdocuments.in/reader034/viewer/2022052515/5a73c80a7f8b9a93088b5c7a/html5/thumbnails/1.jpg)
INTERPLAY BETWEEN CYPRINID HERPESVIRUS 3 (CYHV-3/KHV) AND
COMMON CARP BODY TEMPERATURE
KRZYSZTOF RAKUS JAGIELLONIAN UNIVERSITY IN KRAKOW
POLAND
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FACULTY OF VETERINARY MEDICINE
UNIVERSITY OF LIEGE
PROF. ALAIN VANDERPLASSCHEN
IMMUNOLOGY-VACCINOLOGY
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Homologous host-virus model
RESEARCH MODEL
Common carp CyHV-3/KHV
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Live attenuated vaccine VACCINE AGAINST KOI HERPESVIRUS
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KHV/CYHV-3
Koi herpesvirus (KHV) = Cyprinid herpesvirus 3 (CyHV-3)
Dead carp (>100,000) from Biwa Lake (Japan, 2004) (Matsui et al., 2008)
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CYHV-3 AT THE WORLD
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CYHV-3 AT THE WORLD
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CYPRINID HERPESVIRUS 3
CLASSIFICATION
CeH
V-1
7
IcH
V-1
Sa
lHV
-1
Sa
lHV
-2
RaH
V-1
RaH
V-2
Os
HV
-1
HH
V-1
HH
V-3
C
eH
V-9
EH
V-1
E
HV
-4
Ga
HV
-2
Ga
HV
-1
HH
V-5
Mu
HV
-1
HH
V-6
HH
V-7
ElH
V-1
HH
V-4
HH
V-8
Bo
HV
-4
Bo
HV
-2
Bo
HV
-5
Bo
HV
-1
Alloherpesviridae Herpesviridae
Malacoherpesviridae
BL
HV
CyH
V-3
CyH
V-2
CyH
V-1
1000 MA
450 MA
200 MA
Order: Herpesvirales
Family: Alloherpesviridae
Genus: Cyprinivirus
Species: Cyprinid herpesvirus 3
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100 nm
(Hedrick 2000)
Glycoprotein
Envelope
Tegument
Genome
Capsid
CyHV-3 Herpesvirus
CYPRINID HERPESVIRUS 3
MORPHOLOGY
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• Linear, double stranded DNA
• 295 kb
• 155 ORF
• Genes encode proteins potentially involved in immune evasion mechanisms
ORF4 and ORF12 TNFR homologues
ORF16 G-protein coupled receptor
ORF134 IL-10 homologue
ORF112 Zalpha domain containing protein
ORF139 Poxvirus B22R homologue
CYPRINID HERPESVIRUS 3
GENOME
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Common carp Koi carp
HOST SPECIES
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KHV DISEASE
• Highly infective
• High mortality
Apathy
Hyperemia
Mucus hypersecretion
Gill necrosis
Herpetic lesions
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- CyHV-3 replication in cell culture is restricted by temperature and is blocked at the non-permissive temperature of 30oC (Dishon et al., 2007).
- The disease caused by CyHV-3 occured when water temperature is between 18°C to 28°C (Michel et al., 2010).
MORTALITY NO MORTALITY
THE EFFECT OF TEMPERATURE ON CYHV-3
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BEHAVIOURAL FEVER
In ectothermic animals, fever is based on a behavior modification leading the individual to reside in a warmer environment, hence is
named “behavioural fever”
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WORKING HYPOTHESES
Do Common carp express behavioural fever in response to CyHV-3 infection?
And if so, is the expression of behavioural fever salutary for the carp?
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MCT (multichamber tank) with temperature gradient
TANK SYSTEM
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TANK SYSTEM
MCT (multichamber tank) with temperature gradient
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TANK SYSTEM
MCT (multichamber tank) with temperature gradient
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Axis of symmetry
DO COMMON CARP EXPRESS BEHAVIORAL FEVER IN RESPONSE TO CYHV-3 INFECTION?
Mock-infected CyHV-3-infected
15 fish 15 fish
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DO COMMON CARP EXPRESS BEHAVIORAL FEVER IN RESPONSE TO CYHV-3 INFECTION?
Mock-infected CyHV-3-infected
COMMON CARP EXPRESS BEHAVIORAL FEVER IN RESPONSE
TO CYHV-3 INFECTION
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COMMON CARP EXPRESS BEHAVIORAL FEVER IN RESPONSE TO CYHV-3 INFECTION
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IS THE EXPRESSION OF BEHAVIORAL FEVER SALUTARY FOR COMMON CARP?
34°C 28°C 24°C
Survival analysis
SCT (ang. single chamber tanks)
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MCT- blocked
32°C 28°C 24°C
THE EXPRESSION OF BEHAVIORAL FEVER IS SALUTARY FOR
COMMON CARP
IS THE EXPRESSION OF BEHAVIORAL FEVER SALUTARY FOR COMMON CARP?
Survival analysis
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CLINICAL SIGNS OF FISH BLOCKED AT DIFFERENT TEMPERATURE
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FEEDING
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CONCLUSIONS
Carp express salutary behavioral fever in response to CyHV-3 infection
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ACKNOWLEWDGMENTS Immunology and Vaccinology (FARAH-ULg) Alain Vanderplasschen Maygane Ronsmans Maxime Boutier Joanna Jazowiecka-Rakus and all my other colleagues…
Biostatistics (FARAH-ULg) Frédéric Farnir
Wageningen University Geert Wiegertjes Maria Forlenza Carla Piazzon de Haro
Instituto Gulbenkian de Ciencia Alekos Athanasiadis
UCL Thomas Michiels
University of Glasgow Andrew Davison
INRA Pierre Boudinot
Lancaster University Derek Gatherer
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