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EBV Flashcards

(18 cards)

1
Q

QUI EST CA FAMILLE

A

HERPESVIRUS

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2
Q

DONNER CES CARACTERISTIQUE

A

Famille: Herpesviridae, sous famille: γ-herpesvirinae.
ADN DB, icosaédrique, enveloppé.
Latence.

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3
Q

QUI EST MODE DE TRANSMITION

A

Transmission interhumaine directe par salive, et possible par transfusion.

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4
Q

EST CE TJS PI EST APPARENT

A

NON C’EST SOUVENT INAPARENT

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5
Q

QUI EST LEUR TROPISME

A

LYM B

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6
Q

QUI EST SITE DE LATENCE

A

LYMPHOCYTE B

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7
Q

DONNER DEUX MALADIE PEUT CAUSSER

A

MONONUCLEOSE INFETIEUX
LEUCOPLASIE CHEVELUE DE LA LANGUE

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8
Q

QUI EST AG RESPONSABLE DE DE IMMORTALITE LB

A

EBNA

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9
Q

QUELLE MOMENT APPARE AC ANTI-EBNA

A

Les Ac anti EBNA (IgG) apparaissent 2-3 mois après PI et persistent toute la vie.

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10
Q

QUI EST LE ROLE DE AG EAEA

A

NECCESER POUR LA REPLICATION

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11
Q

OU ON A L’APPARITION DE AC ANTI EA

A

Les Ac anti EA (IgA & IgG) disparaissent 2-3 mois après PI et réapparaissent lors
de RA.

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12
Q

QUI EST LE PREMIER AA APPARAIT

A

AC ANTI VCA IgM va disparaître mais IgG persistant, ils sont qui sont les 1ers à être détectés
(apparition précoce)

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13
Q

COMMENT DIAGNOSTIQUE

A

Prélèvements: sang , salive, LCR, biopsies.
Le diagnostic direct est impraticable en virologie courante (multiplication en vitro
qu’en LB, pas d’ECP)
Sérologie:
- ELISA/IF (Ac spécifique anti VCA, EBNA, EA)
- Réaction de Paul Bunnel et Davidsohn (spécifique de la mononucléose
infectieuse) → recherche d’Ac hétérophiles (agglutination de GR du mouton)
Moléculaire:
PCR: en cas de tumeur lié a l’EBV chez ID (charge virale), lymphome de Burkitt.

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14
Q

EST CE ON A ANTIVIRON

A

NONE

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15
Q

EST CE QUE La réaction de Paul Bunnell-Davidson permet la détection des anticorps anti-EA dans le cas de la
mononucléose infectieuse

A

OUI

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16
Q

EST CE QUE La réinfection par ce virus est marquée par une phase de virémie

17
Q

EST CE QUE C’eST UN VIRUS ONCOGENE

18
Q

EST CE QUE ON PEUT UTILISER DIAGNO DIRECT