Infectious Disease Flashcards
Drug class for Chloroquine sulfate
antimalarial
MoA for Chloroquine sulfate
increases accumulation of toxic free heme in parasite
Indications for Chloroquine sulfate
P. vivax, P. ovale, P. malariae, sensitive P. falciparum malaria
Drug class for Iodoquinol
antiamebocide
MoA for Iodoquinol
unknown
Indications for Iodoquinol
Tx acute & chronic intestinal amebiasis
Drug class for Metronidazole
antiamebocide
MoA for Metronidazole
disrupts helical DNA structure & causes DNA strand breakage
Indications for Metronidazole
tx susceptible anaerobic bacterial & protozoal infections, C. diff infections
Drug class for Mebendazole
antihelminthic
MoA for Mebendazole
inhibits microtubule synthesis
Indications for Mebendazole
tx infection hookworm, pinworm, ascariasis, trichuriasis
Drug class for Praziquantel
antihelminthic
MoA for Praziquantel
causes spastic paralysis & tegumental damage in helminths
Indications for Praziquantel
tx schistosome, taenia infections, several other rarer parasites
Drug class for Permethrin
antiscabide
MoA for Permethrin
delays Na ion influx through nerve & cell membrane producing paralysis & cell death
Indications for Permethrin
tx head louse, scabies
Drug class for Nitrofurantoin
urinary antiseptic
MoA for Nitrofurantoin
inhibits several bacterial enzyme systems (including acetyl CoA) interfering w/ metabolism & possibly cell wall synthesis
Indications for Nitrofurantoin
Px/Tx urinary tract infections
Drug class for Acyclovir, Famcyclovir, Valcyclovir
nucleoside
MoA for Acyclovir, Famcyclovir, Valcyclovir
inhibits viral DNA synthesis & viral replication
Indications for Acyclovir, Famcyclovir, Valcyclovir
mucocutaneous HSV 1 & 2, VZV infections
Drug class for Amantadine, Rimantadine
M2 pump inhibitor
MoA for Amantadine, Rimantadine
inhibits uncoating of influenza A virus preventing penetration of virus into host; dopamine agonist
Indications for Amantadine, Rimantadine
influenza A, Parkinson’s disease
Drug class for Oseltamivir
neuroamidase inhibitor
MoA for Oseltamivir
prodrug converted to active form & inhibits cleaving of virus from cellular envelope preventing release
Indications for Oseltamivir
tx/px influenza A & B
Drug class for Zanamivir
neuroamidase inhibitor
MoA for Zanamivir
inhibits cleaving of virus from cellular envelope preventing release
Indications for Zanamivir
tx/px influenza A & B
Drug class for Lamivudine
anti-hepatitis B drug
MoA for Lamivudine
inhibits viral RNA & DNA transcription
Indications for Lamivudine
tx HBV, HIV
Drug class for Pegylated Interferon Alfa 2a
anti-hepatitis B or C drug
MoA for Pegylated Interferon Alfa 2a
- binds to specific cell membrane receptors inhibiting viral penetration, translation, transcription, protein processing, maturation, release
- increases phagocytic activity macrophages
- increases # & survival of cytotoxic T cells
Indications for Pegylated Interferon Alfa 2a
tx HBV, HCV infections
Drug class for Ribavirin
anti-hepatitis C drug
MoA for Ribavirin
inhibits replication DNA, RNA, viruses via inhibition of protein synthesis
Indications for Ribavirin
RSV in infants, Hep c (w/ peg interferon alfa 2a)
Drug class for Sofosbuvir
anti-hepatitis C drug
MoA for Sofosbuvir
direct acting antiviral against HCV; prodrug that is converted to active from intracellularly & inhibits HCV NS5B RNA-dependent polymerase needed for viral replications & acts as a chain terminator
Indications for Sofosbuvir
tx of for Hep C genotype 1,2,3,4 (w/ Ribavirin or Pg Interferon alfa & Ribavirin)
Drug class for Ledipasvir & Sofosbuvir
anti-hepatitis C drug
MoA for Ledipasvir & Sofosbuvir
- Ledipasvir: inhibits HCV NS5A protein needed for viral replication
- Sofosbuvir: inhibits NS5B RNA-dependent RNA polymerase needed for viral replication & acts as a chain terminator
Indications for Ledipasvir & Sofosbuvir
chronic Hep C, genotype 1
Drug class for Rifampin
anti-tuberculosis drug
MoA for Rifampin
inhibits bacterial RNA synthesis by blocking RNA transcription
Indications for Rifampin
tx TB; elimination of meningococci from nasopharynx in carriers
Drug class for Isoniazid
anti-tubuerculosis drug
MoA for Isoniazid
possible interruption of mycolic acid synthesis resulting in disruption of bacterial cell wall
Indications for Isoniazid
tx TB, latent TB
Dx-Dx interaction for Iodoquinol
interferes w/ iodine metabolism
Which drug could be used to treat Giardia?
Metronidazole
Dx-Dx interaction for Metronidazole
ethanol (causes a disulfiram-like reaction)
What is a possible side effect of Nitrofurantoin?
pulmonary fibrosis
How is Nitrofurantoin metabolized and excreted?
very rapidly
How is the systemic absorption of Nitrofurantoin?
poor so don’t use with pyelonephritis; only use with straightforward UTIs
What type of antibiotics are safe to use in pregnant women?
macrolides
Acyclovir and Valcyclovir at high doses may cause what?
seizures
Which drug is a prodrug of Acyclovir?
Valcyclovir
On average, about how much/long does medication reduce flu symptoms?
about 1 day
Contra-indication for Zanamivir
underlying respiratory disease (COPD, asthma)
Oseltamivir needs to be started within how many hours of symptom onset?
48 hours
Common side effect of anti hepatitis C drugs?
flu-like syndrome, depression
Which drug may cause orange/red staining of body fluids?
Rifampin
Which anti-tuberculosis drug shouldn’t be used as a sole agent and why?
- Rifampin
- build resistance quickly
Major/important side effect of Isoniazid?
hepatitis
Other drug class for Lamivudine
antiretroviral drug: NRTIs
Drug class for Delavirdine
antiretroviral drug: NNRTs
Drug class for Darunavir
antiretroviral drug: PIs
Drug class for Enfuvirtide
antiretroviral drug: fusion inhibitors
Drug class for Maraviroc
antiretroviral drug: CCR5 antagonists
Drug class for Raltegravir
antiretroviral drug: integrase inhibitor