Streptococci

Question 1

Pharyngitis, Impetigo, and folliculitis are:

Answer 1

suppurative non-invasive GAS related diseases

Question 2

Scarlet fever, pyoderma, and חיידק טורף are suppurative invasive diseases associated with:

Answer 2

streptococcus pyogenes (GAS)

Question 3

what are the non-suppurative diseases associated with GAS?

Answer 3

RF (M-protein similarity to self-antigens)

glomerulonephritis

Question 4

M protein and complement activation?

Answer 4

M protein protects the bacteria from being opsonized by the C3b protein. moreover, causing the dissociation of c3 convertase.
- binds fibrinogen and factor H.

Question 5

Erythema marginatum and TSS are:

Answer 5

Diseases caused by exotoxins of GAS:

Erythema marginatum is a systemic rush caused by erythrogenic toxins (A, B, C, D)
TSS (toxic shock syndrome) caused by super antigen