STREPTOCOCCUS & ENTEROCOCCUS Flashcards

(51 cards)

1
Q

Streptococcus FAMILY

A

Streptococcacea

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2
Q

Majority of strepto are __ anaerobes

A

facultative

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3
Q

ANTIGEN Group A

A

rhamnose-N-acetylglucosamine

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4
Q

ANTIGEN Group B

A

rhamnose-glucosamine polysaccharide

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5
Q

ANTIGEN Group C

A

rhamnose-N-acetylgalactosamine

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6
Q

ANTIGEN Group D

A

glycerol teichoic acid containing D-alanine and glucose

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7
Q

ANTIGEN Group F

A

glucopyranosyl-N-acetylgalactosamine

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8
Q

the only acid stable in Lancefield group Antigen

A

S.agalactiae (B)

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9
Q

C carbohydrate (polysaccharide) in the cell wall

A

Lancefield Classification

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10
Q

Group A

A

S.pyogenes

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11
Q

Group B

A

S.agalactiae

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12
Q

Group C

A

S.dysagalactiae

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13
Q

Group D

A

S.bovis group

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14
Q

Group A, C, F, G, N

A

Anginosus
Mutans
Mitis
Salivarius

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15
Q

streptococcus that does not have antigen

A

S.pneumoniae

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16
Q

S.pneumoniae is also part of ____

A

viridans group

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17
Q

8 virulence factor of GAS

A
  1. M protein
  2. Protein F & Lipoteichoic Acid
  3. Hyaluronic Acid Capsule
    4.Streptolysin O and S
  4. Deoxyribonuclease
  5. Streptokinase
    7.Hyaluronidase
  6. Streptococcal Pyrogenic Exotoxins
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18
Q

M protein is encoded by the genes

A

emm

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19
Q

resist phagocytosis & adherence to mucosal cells

A

M protein

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20
Q

adherence to epithelial cells

A

Protein F and Lipoteichoic Acid

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21
Q

Meaning of Protein F

A

Fibronectin binding protein

22
Q

impede phagocytosis
most noticeable in very young cultures

A

Hyaluronic ACid Capsule

23
Q

SLO anaerobic or aerobic?

24
Q

SLS anaerobic or aerobic

25
O hemolysin: _
oxygen labile
26
S hemolyis: _
oxygen stable
27
cells lysed: leukocytes, platelets, and other cells as well as RBcs
SLO
28
cells lysed: leukocyetes
SLS
29
highly immunogenic
SLO
30
non-immunogenic
SLS
31
Ab detected by:
Anti-streptolysisn O (ASO) test
32
potent protease
Deoxyribonuclease
33
most common DNase
B
34
DNase immunogenic?
yuh
35
Fibrinolysin
Streptokinase
36
lysis of fibrin clots through the action on plasminogen-plasmin-lyses clot
streptokinase
37
allows bacteria to escape from blood clots
streptokinase
38
immunogenic but not specific to GAS (can be found in Group C & Group G
Streptokinase
39
spreading factor
Hyaluronidase
40
enzyme that solubilize the ground substance of mammalian connective tissues
Hyaluronidase
41
cause a red spreading rash
Streptococcal Pyrogenic Infections
42
red spreading rash referred to as ___
erythrogenic toxin (scarlet fever)
43
-flat -deep -indistinct tissue
cellulites
44
-raised -superficial -clear, well defined borders
Erysipelas
45
most common GAS infection
Bacterial pharyngitis
46
impetigo,cellulites, erysipelas, wound infection, arthritis, scarlet fever
pyodermal infection
47
Type 2 "flesh eating bacteria"
Necrotizing Fascitis
48
-SpeA -M1 and M3
Streptococcal Toxic Syndrome
49
rheumatic fever n acute glomerulonephritis
poststreptococcal sequelae
50
Treatment of choice:
penicillin
51