4.1 Flashcards

1
Q

Bacillus se divise en different groupes selon

A

Étude de séquençage de ARN

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2
Q

Principal différence entre spores et endospores

A

Leur rôle

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3
Q

Bacillus
Angent pathogène majeur

A

Bacillus anthracis

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4
Q

Bacillus anthracis
Mise en garde

A

Niveau de risque 3
Spores pas tuee par chaleur
Stérilisation autoclave ou avec formol 10%

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5
Q

Bacillus anthracis
3 protéine endotoxines

A

Ag protecteur (AP)
Facteur œdème (FO)
Facteur létal (FL)

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6
Q

Bacillus anthracis
Combinaison 3 protéine exotoxine cause

A

Œdème
Diminution phagocytose
Réduction fonctionnement neutro
Augmentation susceptibilité infection

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7
Q

Bacillus anthracis
Manifestation clinique

A

Charbon cutané (99%)
Charbon pulmonaire

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8
Q

Bacillus anthracis
Traitement

A

Vaccin disponible pour vétérinaire, personnel militaire et autre personne consiste groupe à risque

Pénicillinosensible
Gentamicine, erythromycine, cipro, chloramphénicol

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9
Q

Autre espèce bacillus

A

Cereus
Subtilis
Stearithermophilus

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10
Q

Bacillus cereus:

A

Intoxication alimentaire

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11
Q

Bacillus subtilis:

A

Contaminant commun d’échantillon
Utilisé comme QC biologique pour oxyde éthylène

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12
Q

Bacillus stearothermophilus:

A

Croissance optimal 55-60°c
Utilisé comme QC autoclave

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13
Q

Bacillus
exigence de croissance

A

Anaérobie facultatif
Croître jusqu’à 42°c
Non- fastidieux

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14
Q

Bacillus
milieux culture

A

Colonie après 24h sont grand blanc grisâtre aspect granuleux

Pas hémolyse

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15
Q

Bacillus identification

A

Gram: B+
Non mobile
Cata:pos

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