Antifungal Agents Flashcards
All fatty acids and their salts have fungicidal properties
FATTY ACIDS
Only topically, Inhibits androgen and adrenal steroid synthesis
Ketoconazole
Adverse Effect of Ketoconazole
gynecomastia
present in perspiration (0.01%)
Propionic Acid
from caprylic acid (in coconut and palm oil)
Sodium Caprylate
from destructive distillation of castor oil
Undecylenic Acid
Lacks the endocrinologic effects of ketoconazole
Itraconazole
inhibits squalene epoxidase
Terbinafine
Absorption is increased with fatty acids
GRISEOFULVIN (Penicillum griseofulvum)
Excellent penetrability into the CSF
Fluconazole (PO, IV)
DOC for cryptococcal meningitis
Fluconazole (PO, IV)
DOC for systemic mycoses
Amphotericin B
Mechanism of Action of GRISEOFULVIN (Penicillum griseofulvum)
Interacts with the microtubule within the fungus and inhibit mitosis (metaphase)
Mechanism of Action of AZOLES
interacts with C 14 α demethylase to block demethylation of lanosterol to ergosterol in membranes
Mechanism of Action of POLYENES
Pore formation; binds to ergosterol—>disrupts membrane function—>cell death
Candida infections
Nystatin
(Streptomyces natalensis)
Natamycin
(Streptomyces noursei)
Nystatin
(Streptomyces nodosus)
Amphotericin B
pyrimidine, + Amphotericin B
Flucytosine
(systemic mycoses & meningitis Cryptococcus & Candida)
Amphotericin B
Mechanism of Action of NUCLEOSIDES
Inhibits DNA and RNA synthesis
For superficial mycoses
Clotrimazole, Miconazole, Econazole
For SC and systemic mycoses
Ketoconazole, Itraconazole, Fluconazole