Treatments for GI Infection Flashcards
Abx of choice for C. difficile
vancomycin, fidaxomicin
Abx of choice for C. jejuni, Salmonella, Shigella
Cipro and azithromycin
MOA benzimidazoles
inhibition of microtubule polymerization via beta-tubulin binding and inhibition of mitochondrial fumarate reductase
MOA Ivermectin
binds selectively to glutamate-gated ion channels, induces hyperpolarization and results in tonic paralysis
MOA nitazoxanide
interferes with pyruvate:ferredoxin oxioreductase enzyme-dependent electron transfer reaction
MOA praziquantel
increases cell membrane permeability resulting in loss of intracellular calcium
MOA pyrantel pamoate
depolarizing neuromuscular blocker, opens cation channels and induces activation of nAChr, inhibits cholinesterases and results in spastic paralysis
MOA paromomycin
works similarly to aminoglycosides, on 30-S protein
MOA metronidazole and tinidazole
activated by electron transfer process creating nitro-radicals which disrupts DNA
MOA Atovaquone
interferes with mitochondrial electron transport and ATP/pyrimidine biosynthesis
MOA proguanil
inhibits DHF reductase-TMS enzyme, decreasing inhibition of DNA synthesis
Agent of choice for entamoeba histolytica
metronidazole followed by paromomycin
Agent of choice for ancylostoma and Necator
albendazole
Agent of choice for ascaris lumbricoides
albendazole
Agent of choice for Giardia
metronidazole