Quiz 4 (Other Antimicrobials and Antiparasitic) Flashcards
Chloramphenicol-type antibiotic approved for use in cattle
Florfenicol
What is the withdrawal time for florfenicol?
28 day
which species should not receive florfenicol?
Not for use in adult dairy cows or veal calves
what is dermatophytosis?
Ring worm
what are some topical antifungal drugs? (2)
- Miconazole
2. Nystatin
what is miconazole commonly used to treat?
dermatophytosis
what combination of drugs is nystatin? (3)
- Antibiotic
- anti-inflammatory
- antifungal
what does nystatin not treat?
ring worm
what drug forms is nystatin available in? (2)
- topical
2. oral administration
what can griseofulvin cause in a fetus?
skeletal malformaiton
what drug form is griseofulvin available for horses?
powder
what are some systemica antifungals? (4)
- Ketoconazole
- Itraconazole
- Amphotericin B
- Griseofulvin
which route is griseofulvin given?
oral
where can griseofulvin reach high concentrations?
skin, hair, and nails
what animal considerations can griseofulvin be toxic
pregnant animals and cats
what administration route is ketaconazole and itraconazole given?
oral administration
what administration route is amphotericin B gven?
IV
what are the possible adverse effects when giving ketaconazole/itraconazole?
liver damage
what are the possible adverse effects when giving amphotericin B?
liver disease
what can ketaconazole be used to treat? (2)
- ring worm
2. malassezia pachydermitis
what is malassezia pachydermitits?
yeast ear/skin infection
when is amphotercin B used?
internal fungal infections
what is Famciclovir used to treat?
herpes virus infection
what route of administration is Famciclovir given?
oral
what are some antiviral drug? (4)
- Lysine (Viralys)
- Famciclovir
- Oceltamivir (Tamiflu)
- Alfa interferon
which is the largest group of drugs used in veterinary medicine?
Antiparasitics
what considerations do you used when choosing an antiparasitic? (4)
- susceptibility of parasite
- likely toxicity to animal
- price
- ease of application
when using antiparasitics what should you take into account?
parasite’s life cycle
why is understanding the parasites life cycle inportant when treating with antiparasitics? (2)
- may only be effective against adult parasites
2. other steps may be necessary for successful treatment
anthlmintic
drug used to kill helminth parasite
helminth parasites
nematode, cestode, and trematodes
antiparasitic
drug used to kill or inhibit the growth of internal and external parasites
antinematodal
antiparasitic that is effective against nematodes or “roundworms”
anticestodal
antiparasitic that is effective against cestodes or “tapeworms”
antiprotozoal
antiparasitics that is effective against protozoa
antitrematodals
antiparasitic that is effective against tremtodes or “fluke worms”
what are some antinematodal antiparasitics? (6)
- Tetrahydropyrimidines
- Benzimidazoles
- Piperazines
- Avermectins
- Organophosphates
- Levamisole
which is the most impotant nematode in cattle
tricostrongyle
what are some examples of Tetrahydropyrimidines? (2)
- pyrantel (Strongid, Nemex, Banminth)
2. morantel (Nematel)
which anitnematodal drug is considered to be safest?
Tetrahydropyrimidines
how do Tetrahydropyrimidine affect the parasite?
kill parasites by interfering w/ their CNS
what is the spectrum of activty of Tetrahydropyrimidines in horses? (3)
- ascarids
- strongyles
- pinworms
what is the spectrum of activty of Tetrahydropyrimidines in cattle?
trichostrongyles
what is the spectrum of activty of Tetrahydropyrimidines in cats and dogs? (2)
- ascarids
2. hookworms
what should you do before administering liquid forms of pyrantel?
should be shaken
which other antinematodal should you not use Tetrahydropyrimidines with?
why?
organophosphate
could possibly cause CNS abnormalities
which antinematodal is one of the most effective and commonly used antiparasitics?
Benzimidazoles
what are some example fo benzimidazoles? (7)
- fenbendazole (Panacur)
- mebendazole (Telmin)
- thiabendazole (Equizole)
- oxibendazole (Filaribits Plus, Anthelcide)
- albendazole (Valbazen)
- oxfenbendazole (Synanthic)
- *febantel (Drontal Plus, Rintal)
when metabalized orally what does febantel become?
fenbendazole and oxfenbendaole
fenbendazole
Panacur
mebendazole
Telmin
thiabendazole
Equizole
oxibendazole
Filaribits Plus, Anthelcide
albendazole
Valbazen
oxfenbendazole
Synanthic
*febantel
Drontal Plus, Rintal
How do benzimidazoles effect the parasites?
by interfering w/ energy metabolism
what is the spectrum of activity of benzimidazoles in horses? (3)
- strongyles
- pinworms
- ascarids
what is the spectrum of activity of benzimidazoles in cattle? (3)
- trichostrongyles
- ascarids
- stomach worms
what is the spectrum of activity of benzimidazoles in cats and dogs? (4)
- ascarids
- hookworms
- whipworms
- some tapeworms
which tapeworm species are benzimidazoles effective against?
tenia
in cattle what is albendazole effective against?
liver flukes
in cattle what is fenbendazole effective against?
lungworms
what can benzimidazoles cause but are rarely observed?
Vomiting and diarrhea rarely observed.
what benzimidazoles can be toxic to the liver? (2)
- Mebendazole
2. oxibendazole
which antinematodal is a commonly used grocery store dewormer?
piperazine
what can filaribits be used for
OTC daily Heart worm medication
what are some example of piperazines? (3)
- piperazine dihydrochloride (Pipa-Tabs)
- piperazine citrate (Sergeant’s Worm Away)
- diethylcarbamazine citrate (Nemacide, Filaribits)
piperazine dihydrochloride
Pipa-Tabs
piperazine citrate
Sergeant’s Worm Away
diethylcarbamazine citrate
Nemacide, Filaribits
how do piperazines effect the parasite?
paralyze worms
what is the spectrum of activity of piperazines in dogs and cats?
ascarids
how do Organophosphates effect the parasite?
kills parasites by interfering w/ their CNS
what are some examples of Organophosphates? (3)
- dichlorvos (Task)
- trichlorfon (Dyrex)
- coumaphos (Baymix)
what is the spectrum of activity of Organophosphates in dogs? (3)
- ascarids
- hookworms
- whipworms
what is the spectrum of activity of Organophosphates in horses?
bot worms
what kind of parasites are organophosphate most commonly used against?
external parasistes
wwhich antinematodal is commonly used in large animals
avermectin
what are some examples of avermectins? (4)
- Ivermectin (Ivomec, Eqvalan, Heartgard)
- Doramectin (Dectomax)
- Moxidectin (Quest, Cydectin, ProHeart 6)
- Selamectin (Revolution)
which avermectins are often used as a heartworm preventative? (2)
- Moxidectin
2. selamectin
what are avermectins commonly used for in large animals?
round worm
what are avermectins commonly used for in small animals?
heart worm
where did some fo the avermectins durive from?
streptomyces spp
How do avermectins affect the parasite?
kills parasites by interfering w/ their CNS
what is the spectum of activity for avermectins?
internal and external
what is the specturm of activity of avermectins in horses? (4)
- bots
- ascarids
- strongyles
- pinworms
what is the specturm of activity of avermectins in swine? (4)
- ascarids
- strongyles
- lungworms 4. (mites)
what is the specturm of activity of avermectins in cattle? (3)
- trichostrongyles
- lungworms 3.
- (sucking lice)
what is the specturm of activity of avermectins in dogs and cats? (3)
- heartworm microfilaria
- ascarids/hookworms in cats
- (fleas, mites)
which breed of dogs should you avoid using avermectins?
Why?
Collie breeds
some have genetic mutation that can lead to avermectin toxicity
what are some signs of avermectin toxicity? (5)
- hypersalivation
- dilated pupils
- ataxia
- tremors
- depression
what is a concerns with using avermectin on horses and cattle?
sometimes develop inflammatory reaction to dead parasites
what causes collies to be sensitive to avermectin?
MDR-1 genetic mutation
- Cannot produce a normal transport protein (p-glyco-protein) to remove drug from the CNS
why should cows not be treated with avermectin with possible bot flys?
Dead larva can created an inflammatory nodule in the esohagus or vetebral colum
Avoid treating during the late fall
which antinematodal drug is an older, inexpensive antiparasitic that has immunostimulant activity
Used mostly in large animals
how does levamisole affectthe parasite
CNS system
which group of species is levamisole moslty used in?
large animals
what is the spectrum of activity of levamisoel in horses? (2)
- ascarids
2. stronglyes
what is the spectrum of activity of levamisoel in cattle? (2)
- trichostrongyles
2. lungworms
what is the spectrum of activity of levamisoel in dogs and cats?
lungworms
what drug forms is levamisol available in
injectable and oral
what are some adult heart worm antiparasitics? (2)
- Thiacetarsemide (Caparsolate)
2. Melarsomine (Immiticide)
what are some microfilaria antiparasitics?
- Diethylcarbamazine (Filaribits)
- Ivermectin (Heartgard 30)
- Milbemycin oxime (Interceptor, Sentinel)
- Selamectin (Revolution)
- Moxidectin (Pro-Heart)
which antiparasitic is most commonly used to kill adult heatworm?
Melarsomine
why should you test for heart worm before placing the animal on preventative? (2)
- Treatment wont be enough
2. They will have and anafalactic reaction
what is an example of an anticestodal drug?
isoquinolones
what are some isoquinolones? (2)
- Praziquantel
2. Epsiprantel
what drug forms is praziquantel available in?
tablet and injectable
how does prazuquantel affect the parasite?
reduces the tapeworms resistance to digestion in the animals GIT
what is praziquantels spectrum on activity in dogs and cats?
all common tapeworm species
what are some possible side effect after administration of praziquantel?
vomiting and diarrhea occassion
how do you eliminate the reinfection of tapeworms?
must eliminate fleas and prevent hunting
what are some example fo praziquantel?
- droncit
2. drontal
what age can praziquantel be given to puppies and kittens
puppies 4 weeks
kitties 6 weeks
what route can epsiprantel be given?
oral
how does epsiprantel affect the parasites?
reduces the tapeworm’s resistance to digestion in the animal’s GIT
what is epsiprantel spectrum of activity?
effective against most tapeworm species infecting dogs & cats
which tapeworm species is epsiprantel not effective against?
Echinococcus
what age can epsiprantel be administered to puppies and kitties?
7 weeks
what is an antitrematodal drug? (2)
- Albendazole (Valbazen)
2. Clorsulon (Curatrem, Ivomec Plus)
how does albendazole and clorsulon affect the parasites?
interferes w/ parasite metabolism
what parasites are albendazole and clorsulon effective against in cattle?
liver flukes
what are some antitrematodal drugs
- Amprolium (Corid)
- Sulfonamide antibiotics
- Metronidazole (Flagyl)
how does amporlim effect coccidia?
inhibits thiamine uptake
what is amprolium used to treat in calves?
coccidia
what species is sufonaminde drugs used on to treat coccidia?
chickens, turkeys, cattle, dogs and cats
what is metronidazole use to treat in dog and cats?
giardia