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MS2 - Infectious Disease > Opportunistic Infections > Flashcards

Flashcards in Opportunistic Infections Deck (9)
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1
Q

Almost all bacteria need iron for growth. What are two exceptions?

A

Treponema pallidum and Lactobacilli

2
Q

Which form of iron is insoluble?

A

Fe3+

3
Q

The _________ form of iron is red.

A

Fe3+

4
Q

______________ cross links alganine (sp?) in cystic fibrosis patients and aggravates Pseudomonas colonies.

A

Calcium (present in excess in CF patients)

5
Q

______________ has been observed to grow in distilled water or compounds that contain benzene.

A

P. aeruginosa

6
Q

P. aeruginosa’s toxin is similar to a toxin produced by what other kind of bacteria?

A

Gram-positive rod (being C. diphtheriae)

Note: Both have a binding unit (B) and an active unit (A). They have the same effect but target different proteins.

7
Q

Endotoxin activates three pathways: _________________.

A

the complement cascade, factor XII, and factor VII

8
Q

In addition to hot tubs and medical equipment, P. aeruginosa has also been found contaminating _____________.

A

piercing tools

9
Q

What’s the name of P. aeruginosa’s exotoxin?

A

Exotoxin A