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93 Cards in this Set

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What are the major and minor systems affected by hepatozoonosis?
1 - MS
2 - GI
What is the main species affected by Hepatozoonosis?
dog
What agents cause hepatozoonosis?
H. americanum (NA)
H. canis
What is the vector for hepatozoonosis?
Ambyloma maculatum
-Gulf Coast Tick
What are the carriers for Hepatozoonosis?
coyote and bob-cat
The primary clinical sign of hepatozoonosis is in the MS. What are the details?
muscle pain and atrophy, severe hyperestheisa over the paraspinal region, joint pain (periostitis), stiffness
Is hepatozoonosis an acute or chronic disease?
chronic wasting disease of dogs
How is H. americanum transmitted?
ingesting the tick
GI is a secondary symptom of hepatozoonosis. describe.
often seen before muscle pain; acute, bloody diarrhea
Is there a fever with hepatozoonois?
yes - cyclic
What are three common things to see on the lab report with hepatozoonosis?
-neutrophilic extreme leukocytosis +/- left shift (looks like leukemia)
-non-regenerative anemia of chronic disease
-hypoalbuminemia (because also have protein loosing nephropathy (renal disease and failure)
What are you looking for on radiographs with hepatozoonosis?
periostitis where muscles attach to bones (long bones and pelvis)
What is the best way to diagnosis hepatozoonosis?
demonstrate organism - gamonts in neutrophils or monocytes in blood

-tissue - skeletal muscle biopsy (cystic form)

-also can do ELISA or PCR
What is the treatment for hepatozoonosis?
-For remission (TCP - TMPS/chloramphenicol/pyrimethamine) for 14 days

-To reduce relapses - decoquinate daily
-NSAIDs to reduce joint pain

also - coccidiostat Toltrazonuril
How long are dogs infected with hepatozoonosis?
life - long infection
What is the one primary and three secondary systems affected by Borreliosis?
1- MS
2 - Renal, GI, Cardiac

-also CNS
What is the species most affected by Borreliosis?
dog
What is the vector for Borreliosis?

-How long must it be attached?
Ixodes scapularis/pacificus

48 hours
What is the agent that causes Borreliosis?
Borrelia burdorferi
What is the reservoir for Borreliosis?
deer/other wild life, rodents
The primary system hit by Borrelia is MS - describe the symptoms.
fever, anorexia, lethargy, lymphadenopathy, lameness +/- swollen joints arthropathy with acute syndrome
Is Borreliosis acute or chronic?
acute to asymptomatic, kidney disease with chronic form (acute, progressive renal failure)
Renal disease is another secondary problem of Lyme disease, why?
immune complexes form - immune complex glomerulonephritis
What aspect of GI problems do you see with lyme disease?
vomiting and diarrhea
Borrelia affects the heart - what happens?
heart block, collapse, weakness, tachyarrythmias, conduction bradycardia
How do you diagnose Borrelia?
seriologic testing for antibodies
-ELISA, IFA, Western Blot

-also part of the Snap 4DX the measures antibody to the C-6 B. burgdorferia protein
What drugs will you use to treat Borrelia?
-drugs from peniciilins and tetracyclins

- amocicillin, doxy, cefitriaxore, azithrymycin

- also NSAIDS for arthropathy
How do you prevent Borrelia?
-prevent ticks - permethrins and amitraz

- vaccination - generate OpsA and Ops B antibodies
What are the 3 primary systems and one secondary system hit by Leishmaniasis?
1 - Renal, Derm, HL
2 - MS
What is the primary animal hit by Leishmania?
dog - foxhounds are carriers
What is the agent of Leishmainia?

Vector?
L. infantum

Plebotomus
How is Leishmania transmitted?
direct/maternal, bites, exposure to blood
-amastigotes inside of marcophages
Dermatologic signs are a main sign of Leishmania. Describe these lesions.
seboreic skin, draining lesions, alopecia with severe, dry desquamitization
What are the key lab findings with Leishmania?
-HYPERproteinemia with a polyclonal gamopathy
-thrombocytopenia due to high gammaglobulins
-non-regenerative anemia
-signs of renal failure (proteinuria, azotemia, ect.)
what three treatment plans do we do?
optimal
alternative
emergency
The MS system is secondarily hit with Leishmania, what is seen with this?
supperative polyarthropathy that is non-septic

-immune complexes develop in the joints, polyarthritis
How do you diagnose Leishmania?
-demonstrate the organism in BM, splenic or lymphnode smears

-amastigotes in cytoplasm of macrophages

-also can use IFA or ELISA
Can you clear Leishmania from the body?

What is the treatment?
no

antimony with allopurinol
-liposomal amphotericin B
What 2 primary and 1 secondary system are hit by cytauxzoonosis?
1 - Respiratory and HL
2 - GI
What is the main species affected by cytauxzoonosis?
cats
Is cytoauxzoona a acute or chronic disease?
acute - 1-2 weeks to develop
What is the vector and reservoir for cytausxzoonosis?
vector - Dermacentor variabilis
reservoir - bobcat
What is the agent that causes cytauxzoonosis?
C. felis
HL is a primary system hit by C. felis. What are the clinical signs associated with this?
-DRAMATIC thromocytopenia that causes hemorrhage, coagulation disorder, pancytopenia, hepatosplenomegaly

-obstruction of blood flow thru tissues by mononuclear infiltrates and from anorexia
What are the lab findings with cytauxzoonosis?
-anemia, severe thrombocytopenia, neutropenia, icterus
What part of the GI is affected by cytauxzoonosis?
LIVER
How do you diagnosis cytauxzoonosis?
-clinical signs (fevor, pale MM, icteric, resp distress, hepatosplenomegaly)

- Blood smear - ID orgnaism
-PCR with EDTA blood
-Rads - lung, spleen and liver changes
-histopath - schizonts
What is the treatment for cytauxzoonosis?
-supportive care (fluids, blood, heparin for DIC)
-Imidocarb and Diminaxene (2 doses, 2 weeks apart)
- fluroquinolones, doxycycline
What is the prognosis for cytauxzoonosis?
poor to grave -- usually fatal
What is the one and only system affected by Mycoplasma?
HL
What is the main species affected by Mycoplasma?
cat
What are the agents that cause mycoplasma in the cat?
M. haemofelis, haemomintom, turicasis
What is the main vector for Mycoplasma?

How is it spread?
fleas and ticks (more important in dogs)

-oral, IV, IP, blood, transplacental
What are the risks associated with getting Mycoplasma?
outdoor, male, stress (FIV, FeLV)
Mycoplasma affects the HL system. Describe the clinical signs.
EXTRAvascular hemolysis (organism sits on top of cells)

-regnerative anemia
-inflammatory leukogram
-splenomegaly
-icerus
What secondary disease does the dog get with Mycoplasma?
Ehrlichia, Babesia
How do you diagnose Mycoplasma?
-blood - fresh from an ear, not in EDTA
(demonstrate org)
- response to treatment - when in doubt, treat
-PCR
What are the 4 antibacterials that with decrease the number of organisms of Mycoplasma, but not eliminate the disease? TEDC
TEDC
-tetracycline
-doxycycline
- chloramphenicol
-enrofloxacin
What should you assume about all animals that you find are positive for Mycoplasmosis?
assume they are carriers - can not get rid of all of the organisms
What are the main systems affected by Lepto (3 primary, 2 secondary)?
1- renal, GI, hemolympathics
2 - MS, Cardiac
What is the main species affected by Lepto?
dog
How is Lepto transmitted?
abraded skin, penetrates mucous membranes, other routes (bites, sex, transplacental, fomites)
Where does Lepto replicate?
vascular endothelium
What 2 organs are most affected by lepto?
liver
kidney (anuria/oliguria acutely; PU/PD chronically)
MS system is hit with lept. What lab value might you see an increase in?
CK
What lab values are abnormal with Lepto?
-leukocytosis, thrombocytopenia, anemia
-increased liver enzymes and bilirubin
-azotemia and isothenuria
-infammatory sediment
-CK increase
What other systems (other than the main) are affected by Lepto?
resp - cough and distress
-anterior uveitis
-CNS - meningeal pain
What is the Gold Standard for serology for Lepto?
MAT - microscopic agglutination test

1:3200 in non-vacinated or 4 fold increase over 2 weeks
How do you definitively diagnose Lepto?
ID in urine, blood, tissue
PCR on blood and urine not really helpful (false positives)
-histopath is good
What is the treatment for Lepto?
fluids
-antibiotics to
(1) eliminate bacterimai (ampiclin, PPG)
(2) eliminate carrier state (doxycyclin, macrolydes, then the mycins
How many serovars does the Lepto vaccine have?
4 - killed subunit vaccine
-grypo, pomona, icterohemorragicum, canicola
Is Lepto zoonotic?
yes
What are the main systems hit by RMSF?
1- CNS, HL, Resp
2- renal, derm
What is the main species hit by RMSF?
dog
What is the agent that causes RMSF?
rickettsia rickettsii
What are the vectors for RMSF?

How long do they need to be attached for disease to occur?
dermacentor variabilis and andersoni (dog and wood)

3-6 hours - SHORT
What are the reservoirs for RMSF?
rodents, hares, rabbits - 15% seroprevelance where ticks are found
Where doe the RMSF replicate?
endothelial cells
-cell replication and damage, causes vasculitis and can see disease as soon as 2-3 days after exposure
The CNS system is one of the main systems hit by RMSF. What are the clinical signs?
acute vestibular problems, cervical pain, seizures
Are resp signs with RMSF more prominent than Lepto?
YES
What are the HL signs with lepto?
thrombocytopenia --> petechia, eccymosis, edema of peripheral extremities, acute vascular damage and necrosis
What are the lab values with RMSF?
leukocytosis
thrombocytopenia
mild anemia
What are other clinical signs seen with RMSF?
conjunctivitis, uveitis/red eye
joint pain
How do you diagnosis RMSF?
-serology - titer greater than 1:512-1:1024 or 4 x increase

-direct FA or IHC
-PCR
What is the treamtment for RMSF?

TEDC
TEDC

tetracyclin, enroflox, doxy, chloramphenicol for 10-14 days
What is the prognosis for RMSF?
good - life-long immunity
What are the 2 diseases where HL are not affected?
Borreliosis
Hepatozoonosis
What are the 2 disease where derm problems are?
Prim - leishmania
Sec - RMSF
What are the 2 disease where CNS is a problem?
Prim - RMSF
Sec - Ehrlichiosis
What 2 disease is respiratory greatly affected?
RMSF and cytauxzoonosis
What are the 2 diseases where cardiac is a secondary problem?
Borreliosis and Lepto
What 3 disease are not affect in the MS system?
RMSF
Hemobartonella
cytausxzoonosis
What 5 disease affect the renal system?
Primary - 2
Secondary 3
Primary - Lepto, Leishmania
Secondary - RMSF, Borrelia, Ehrlicia