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Bacte Lec (Overview) [Prelims 1] > 5.3.1 Arcanobacterium spp. > Flashcards

5.3.1 Arcanobacterium spp. Flashcards

1
Q

How many species for Arcanobacterium species

A

6, 3 are clinically isolated

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2
Q

Acranobacterium haemolyticum is previously known as?

A

Corynebacterium haemolyticum

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3
Q

What are the arcanobacterium species?

A

haemolyticum
pyogenes
bernardiae

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4
Q

What are the clinical infections for Arcanobacterium haemolyticum?

A

Pharyngitis

Cervical Lymphadenopathy

Pruritic scarlatiniform rash with desquamation of the skin

Sepsis

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5
Q

Sweliing of lymph node at the neck

A

Cervical lymphadeonpathy

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6
Q

Paryngitis of Arcanobacterium haemolyticum is usually isolated to patients at agaes?

A

10-20 years old

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7
Q

All clinically isolated Arcanobacterium spp. causes pharyngitis?

A

TRUE

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8
Q

What is the clinical infection for A. pyogenes?

A

Spesis
Wound infection (From animal contact)

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9
Q

What is the clinical Infection for A. bernardiae?

A

Bacteremia
Wound infections
UTI
Septic arthritis

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10
Q

What are all bacteria that causes UTI (PRelim)

A

Arcanobacterium bernardiae

Staphylococcus saprophyticus

Staphylococcus epidermidis

Enterococcus faecalis

Staphylococcus lugdunensis

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11
Q

What is the microscopical characterisitics of Arcanobacterium haemolyticum?

A

Curved
Pointed ends (Fusiform)
Rudimenntary branching

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12
Q

When will Arcanobacterium haemolyticum exhibit coccal form?

A

48 hrs

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13
Q

How does rudimntary branching of A. haemolyticum happens?

A

Incubated aerobically with CO2

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14
Q

What is the cultural characteristics of Arcanobacterium haemolyticum?

A

small
Beta hemolytic
Depression (Pits agar)

Black opaque (When the colony is scraped)

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15
Q

What is the biochemical testing for Arcanobacterium haemolyticum?

A

Lipase and Lecithinase positive (EYA)

CAMP

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16
Q

What is the positive indicator for A. haemolyticum?

A

Reverse CAMP

17
Q

How reverse CAMP reaction occur?

A

Production of Phospholipase D

18
Q

What is the function of Phospholipids D?

A

Inhibits Beta-lysin

19
Q

What is the positive indicator for lecithinase?

A

Clear zone

20
Q

Lecithinase is also called?

A

Phospholipase C

21
Q

Splits the phospholipids lecithin that creates clear zone

A

Phosphlipase C

22
Q

Does A. haemolyticum exhibits arrowhead in CAMP?

A

False

23
Q

What is the bormal flora for arcanobacterium spp.?

A

Skin and Upper respiratory tract

Bacte Lec (Overview) [Prelims 1] (34 decks)

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