Ch. 42 Flashcards
An opportunistic fungal infection that occurs in patients taking broad-spectrum antibiotics, antineoplastics, or immunosuppressants, as well as in immunocompromised persons.
Candidiasis (caused by Candida albicans)
When candidiasis occurs in the mouth it is commonly referred to as ______. Commonly seen in newborns or immunocompromised persons.
Thrush or oral candidiasis
A yeast infection and occurs most commonly in individuals with diabetes mellitus, women taking oral contraceptives, and pregnant women.
Vaginal candidiasis
casofungin
Systemic Antifungal
ketoconazole
Drug class?
Imidazole (Systemic Antifungal)
clotrimazole
Topical Antifungal
miconazole
Topical Antifungal
Polyenes
nystatin (Topical Antfungal) amphotericin B (Systemic Antifungal)
Triazoles
fluconazole (Systemic Antifungal)
itraconazole
voriconazole
Echinocandins
caspofungin
micafungin
MOA: Taken up by fungal cells and interferes with DNA
synthesis. Result: fungal cell death
flucytosine
Disrupts cell division, results inhibited fungal mitosis (reproduction)
griseofulvin
MOA: Bind to sterols in cell membrane. Result: fungal cell death. Do not bind to human cell membranes or kill
human cells
Polyenes (amphotericin B and nystatin)
Inhibit fungal cell cytochrome P-450 enzymes,
resulting in cell membrane leaking. Lead to altered cell membrane. Result: altered cellular metabolism and fungal cell
death
Imidazoles and triazoles (ketoconazole,
fluconazole, itraconazole, voriconazole)
Prevent the synthesis of glucans, which are
essential components of fungal cell walls.
Causes fungal cell death
Echinocandins (caspofungin, micafungin)