4.3.1 Listeria monocytogenes

Question 1

Characteristics of Listeria monocytogenes

Answer 1

Non spore forming
Coccobacillus
Primarily infect animals

Question 2

How listeria infect humans?

Answer 2

Dairy products at low temp (0-20)

Processed meat

Question 3

Temp required for Listeria monocytogenes

Answer 3

0-20

Question 4

What are the 3Cs?

Answer 4

Cheese, chicken coleslaw

Question 5

What are the virulence factor for Listeria?

Answer 5

Hemolysin (Listeriolysin O)

Protein p60
Catalase
Superoxide dismutase
Phospholipase C

BOOK:
Internalin
Act A
Siderophores

Question 6

Cell surface protein that induces phagocytosis

Answer 6

Internalin

Question 7

Induces actin polymerization on the surface of host cells producing cellular extensions and facilitating cell to cell spread

Answer 7

Act A

Question 8

Organisms capable of scavenging iron from human transferrin and of enhanced growth

Answer 8

Siderosphores?

Question 9

Virulence factor that induce phagocytosis an increase adhesion and penetration into mammalian cells

Answer 9

Protein p60

Question 10

A hemolytic and cytotoxic toxin that damages the phagocyte (phagocytice membrane)

Answer 10

Listeriolysin O