Antifungal Flashcards
Antifungal drug class that alter cell membrane permeability
Azoles
Polyenes
Terbinafine
Antifungal drug class that block beta glucan synthesis
Echinocandins
Antifungal drug class that block nucleic acid synthesis
Flucytosine
Antifungal drug class that disrupt microtubule function
Griseofulvin
___ binds to ergosterol forming artificial pores
amphotericin B
Amphotericin B cause nephrotoxicity which presents as ____
RTA with Mg and K wasting
Amphotericin B is used as systemic treatment for ____
- Aspergillus
- Blastomyces
- Candida albicans, crytptococcus
- Histoplasma
- Mucor
What are the lipid formulations of amphotericin B?
- Ambisome
- Amphotec
- Abelcet
Resistance pattern of ampho B
decreased level of ergosterol or change in membrane structure
DOC for fungal meningitis
Flucytosine
what is the active compound of flucystosine which has a fungistatic effect
5FU
what enzyme is used to convert flucytosine to 5-FU
cytosine deaminase
5 FU inhibits what enzyme?
thimidylate synthase
What is the resistance pattern of flucytosine
due to decreased activity of fungal permease and deaminase
____ inhibits ergosterol synthesis by inhibiting fungal P450-dependent enzyme
ketoconazole
drug of choice for chromoblastomycosis
flucytosine
drug of choice for chronic mucocutaneous candidiasis
ketoconazole
Antifungal drug that is a potent CYP 450 inducer affecting Phase 1
ketoconazole
____ interferes to steroid hormone synthesis
ketoconazole
What is the resistance pattern of ketoconazole?
changes in the sensitivity of target enzyme
What is the DOC as treatment and prophylaxis to cryptococcal meningitis
fluconazole
This is an alternative drug to ampho be in the treatment of C. neoformans
fluconazole
Antifungal drug that has good CNS penetrability
- Fluconazole
- Posaconazole
- Voriconazole
What is the only azole that has an activity agains rhizopus
Posaconazole
DOC for sporotrichosis
Itraconazole
may be used for subcutaneoous chromobastomycosis
itraconazole
____ inhibits beta glucan synthase decreasing fungal cell wall synthesis
Caspofungin
What is the salvage therapy for invasive aspergillosis?
caspofungin
Antifungal drug that can cause histamin release
caspofungin
Echinocandin that can increase the level of cyclosporin and tacrolimus
micafungin
[Systemic antifungal]
interferes with microtubule function
Griseofulvin
[Systemic antifungal]
that can cause disulfram reaction
griseogulvin
Griseofulvin action is increased by intake of ___
fatty meal
What is the resistance pattern of griseofulvin
decreased transport of drug into fungal cell wall
___ inhibits fungal squalene ixidase
terbinafine
[Systemic antifungal]
DOC for onychomycosis
Terbinafine
Where does terbinafine acumulate in the skin
keratin
[Superficial antifungal]
___ binds to fungal cell membrane forming artificial pores
nystatyin
[Superficial antifungal]
can be used for oropharyngeal, esophageal and vaginal candidiasis
Nystatin
[Superficial antifungal]
inhibit P450 dependent enyzyme blocking ergosterol synthesis
Clotrimazole
DOC for pityriasis versicolor
clotrimazole