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Antimicrobials, anti-fungals, anti-parasitics
Pharmacology Test 3
34
Pharmacology
Professional
11/21/2010

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Term
Penecillins
Definition
Inhibit bacterial cell wall synthesis (block assembly of peptidoglycan).
Term
Cephalosporins
Definition
Inhibit bacterial cell wall synthesis (block assembly of peptidoglycan).
Term
Vancomycin
Definition
Inhibits cell wall synthesis (block assembly of peptidoglycan).
Term
Bacitracin
Definition
Inhibits cell wall synthesis (block assemply of peptidoglycan).
Term
Polymyxins
Definition
Bind LPS and inhibit cell membrane function.
Term
Ionophores
Definition
Destroys cell membrane integrity by forming channels in the membrane.
Term
Sulfonamides
Definition
Blocks first step of folic acid synthesis (inhibits DNA formation).
Term
Diaminopyrimidines
Definition
Blocks second step of folic acid synthesis (inhibits DNA formation).
Term
Metronidazole
Definition
Causes fragmentation of bacterial and protozoal DNA. Undergoes reduction once inside cell and metabolite damages DNA.
Term
Nitrofurans
Definition
Induces DNA damage by being degraded inside cell and binds to DNA and causes strand breakage.
Term
Fluoroquinolones
Definition
Inhibit bacterial gyrase and/or topoisomerase IV. Inhibit DNA replication.
Term
Rifamycins
Definition
Inhibit bacterial RNA polymerase, thus inhibits RNA synthesis.
Term
Aminoglycosides and Spectinomycin
Definition
Inhibits bacterial protein synthesis by binding to 30s rRNA.
Term
Tetracyclines
Definition
Inhibit bacterial protein synthesis by binding the 30s rRNA subunit.
Term
Chloramphenicols
Definition
Inhibit bacterial protein synthesis by binding the 50s rRNA subunit.
Term
Macrolides
Definition
Inhibit bacterial protein synthesis by binding to 50s rRNA subunit.
Term
Lincosamides
Definition
Inhibit bacterial protein synthesis by binding to 50s rRNA subunit.
Term
Allyamines
Definition
Inhibit fungal cell wall synthesis by preventing conversion of squalene to lanoesterol.
Term
Azoles
Definition
Inhibit fungal wall synthesis by inhibiting the conversion of lanosterol to ergosterol.
Term
Polyenes
Definition
Bind fungal cell membrane ergosterol and inhibit membrane function.
Term
Flucytosine
Definition
Inhibits fungal RNA and DNA synthesis in specific fungi. It is a structural analogue of cytosine.
Term
Griseofulvin
Definition
Inhibits fungal DNA replication, binds microtubules to prevent division of cells.
Term
Organophosphates/Carbamates/Pyrethrins
Definition
Neurotoxic to ectoparasites.
Term
Macrocyclic lactones
Definition
Endectoside, neurotoxic to both internal and external parasites.
Term
Nitenpyram (Capstar)
Definition
Neurotoxic to fleas.
Term
Imidacloprid
Definition
Neurotoxic to fleas (adults and larvae) and grubs.
Term
Fipronil (Frontline)
Definition
Neurotoxic to adult fleas and ticks. Blocks GABA gated channels (paralysis).
Term
Metaflumazone (Promeris)
Definition
Neurotoxic to adult fleas, blocks Na channels causing paralysis.
Term
Lufenuron, Pyriproxyfen, Methoprene
Definition
Insect growth inhibitor, inhibits chitin formation by killing epidermal cells responsible for making chitin.
Term
Piperzine, levamisole, pyrantel/morantel
Definition
Neurotoxic to nematodes (paralyzed by cholinergic antagonist).
Term
Emodepside (Profender)
Definition
Neurotoxic to nematodes, causes influx of Ca and DAG into neuron and causes flaccid paralysis and death.
Term
Clorsulon
Definition
Flukicide that causes starvation of flukes by inhibiting glycolytic enzymes.
Term
Isoquinolones
Definition
Kill tapeworms and flukes by damaging tegument.
Term
Benzamidazoles
Definition
Kills all helminthes via starvation by interrupting energy metabolism. Kills eggs by binding to microtubules.
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