Classification of Fungi Flashcards

1
Q

What is the treatment of Candida infections?

A

Flucanazole (azalea) and terbinafine (allylamine). Echinocandins for serious candida

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2
Q

What is the treatment for cryptococcosis?

A

Amhpoterecin B, flucanazole and flucytosine

ALL TOXIC

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3
Q

What are the infections caused by cryptococcosis?

A

Neoformans causes lung infection.
Gatti causes meningitis.

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4
Q

What can fungi be split into?

A

Yeasts or filamentous fungi (moulds)

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5
Q

What can fungi infect? (4)

A

Mammals, plants, insects, amphibians

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6
Q

How do fungi gain energy?

A

They’re chemo-organotrophic. take energy from oxidising reduced organic compounds

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7
Q

How do fungi gain nutrients?

A

They have a polysaccharide cell wall which absorbs nutrients

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8
Q

What is an essential part of fungi which is commonly attacked by anti-fungals?

A

Ergosterol - similar to cholesterol. Gives fungi permeability and fluidity

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9
Q

How do fungi attack a human generally?

A

They produce microscopic spores which we can inhale, usually pathogens or antigens. Also transmitted when comes into contact with the skin

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10
Q

What is mycoses? What are 3 types?

A

Any infection caused by fungi
superficial, submucosal or systemic disease

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11
Q

What are 4 common mycoses?

A

Candida, Aspergillosis, Cryptococcosis (systemic)
Superficial mycosis (not involved with internal organs)

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12
Q

What is characteristic of Candida albicans?

A

Yeast that lives in mouth, skin, gut, vagina, penis. Causes infection if internal environment changed, e.g. surgery or trauma allowing candida in gut to escape

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13
Q

What is characteristic of Candida auris and treatment?

A

Usually MDR, causes UTI’s. Can use echinocandins (if not resistant)

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14
Q

What is the treatment for aspergillosis?

A

Voriconazole

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15
Q

What is aspergillosis?

A

Infection that can be caused by inhaling conidia in the environment.

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16
Q

Aspergillosis examples

A

Asthma, aspergilloma (fungal ball in lung), disseminated aspergillosis (ball leaves lung and travels)

17
Q

What are the three types of dermatophytic fungi?

A

Ringworm (tinea), Athletes foot, Malassezia

18
Q

How does dermatophytic fungi grow?

A

Degrades keratin and uses it as nutrient source

19
Q

What is significant about malassezia?

A

Its a yeast found on all healthy skin, particularly in sebum-rich areas, causing pimples when infected

20
Q

What is the structure of a cryptococcosis?

A

It is yeast with a capsule and is inhaled in our environment

21
Q

Candida albicans vs tropicalis

A