Lecture 6 - Staphylococci Flashcards

1
Q

Looking through a microscopy, staph looks like…

A

A bunch of grapes

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2
Q

Staphylococci

A

G+ coccus

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3
Q

Two forms of staph

A

Coagulase +/-

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4
Q

Coagulase + physical features and type of staph

A

Gold, staph aureus

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5
Q

Coagulase - type of staph

A

Epidermis and sarophyticus

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6
Q

Where does staph epidermidis colonize?

A

The skin, everyone has it

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7
Q

S. Aureus colonizes what species and where?

A

Humans and in the nose and on the skin

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8
Q

How is S. aureus spread?

A

Through fomites

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9
Q

What is the most common nosocomial infection?

A

S. aureus

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10
Q

S. aureus creates a distinct physical trait

A

Abscess full of neutrophils/puss located on the skin. These require drainage and antibiotics

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11
Q

How does staph kill WBCs?

A

Through the release of toxins (hemolysis) causing more wide spread and infection

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12
Q

Impetigo is most commonly found on who and with what physical features?

A

Children, pimple like (non-bullous) or fluid filled blisters (bulls)

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13
Q

Stye physical features

A

Infection around the eye causing swelling which eventually goes away on its own

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14
Q

Furuncle (BOIL) caused by

A

Infected hair folicle

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15
Q

Carbuncles caused by

A

Infection of many hair folicles

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16
Q

Osteomyelitis is…

A

Infected bone marrow which is very challenging to treat

17
Q

Infective endocarditis is…

A

Infected heart valves causing lesions

18
Q

What causes Toxic Shock Syndrome (TSS)

A

S. aureus/pyogenes

19
Q

What caused Menstural TSS

A

High absorbancy tampons

20
Q

How do tampons cause Menstural TSS

A

By colonizing staph inside of the vagina and by changing the regulation of toxxins

21
Q

What happens when a super antigen is formed?

A

T-cells become over activated causing inflammatory response, cytokine storm and shock/organ failure

22
Q

What toxin is specific for the menstrual TSS?

A

TSS Toxin-1

23
Q

What happens when super antigen binds?

A

Activates T-cells