Mycology and Fungal Diseases

Mycology and Fungal Diseases

fungi

spore bearing, lack of chlorophyl, have absorptive nutrition and reproduce sexually/asexually

heterotrophic

use reduced, preformed organic molecules a carbon source

osmotrophic

soluble nutrients are absobed through the cytoplasmic membrane

saprophytic

derive nutrition from degradation of dead organic matter

dimorphic

have two different morphological forms

thermal dimorphism

Exist in environment in hyphal form and then change in temperature changes and switches to yeast-phase

superficial, cutaneous, and subcutaneous mycosis

direct contact infections of the skin, hair and nails.

systemic mycosisq

fungal ingections that have disseminated to visceral tissues

opportunist mycosis

fungal infections caused by fungi with low inherent virulence that affect immunosuppressed individuals

superficial mycoses location

• scalp

• neck

• beard

• face

• arms

cutaneous mycoses locations

• hair of beard

• scalp

• skin

• buttocks

• feet

• nails

subcutaneous mycoses locations

• legs

• feet

• puncture wounds

superficial mycoses

fungal infections of the skin, hair, and nail that only invade only the stratum corneum and the superficial layers of the skin

Malasszia furfur

causes tinea versicolor brownish-red scales on skin of trunk, neck, face and arms

trochosporon ssp.

causes white Piedra, a superficial cosmetic fungal infection of the hair shaft.

cutaneous mycoses

• infection of the skin cells using keratin as a carbon source for growth

• most common fungal diseases in human