Serum acute phase protein concentrations in dogs with hyperadrenocorticism with and without concurrent inflammatory conditions.
BACKGROUND
Acute phase proteins (APPs) are promising markers of inflammation in dogs, because they are more sensitive than WBC counts in detecting clinical and subclinical inflammation. Endogenous corticosteroids can mask an acute phase response and make it more difficult to identify underlying inflammatory disease.


OBJECTIVE
The purpose of this study was to evaluate the acute phase protein response in dogs with spontaneous hyperadrenocorticism (HAC) with and without concurrent inflammatory conditions.


METHODS
Serum concentrations of C-reactive protein (CRP), haptoglobin (Hp), fibrinogen, and albumin were measured in 44 healthy adult dogs and 39 dogs with HAC; the HAC group was further divided into dogs with and without concurrent infection/inflammation. A fourth group of dogs with severe sepsis and without HAC was compared with the dogs with HAC and severe sepsis.


RESULTS
Dogs with uncomplicated HAC had significantly higher Hp and fibrinogen concentrations compared with healthy control dogs (P<.001). Dogs with HAC and severe inflammatory disease also had significantly higher CRP and lower albumin concentrations than control dogs and dogs with HAC without concurrent inflammation. Dogs with sepsis but without HAC had significantly higher CRP concentrations than dogs with HAC and sepsis.


CONCLUSIONS
Dogs with HAC had increases in the moderate APPs (Hp and fibrinogen), and no significant changes in CRP and albumin compared with healthy dogs. Although concurrent HAC appeared to blunt the CRP response in dogs with sepsis, increased serum CRP concentration in dogs with HAC is likely indicative of severe concurrent inflammation.
Caldin
Marco
M
San Marco Veterinary Hospital, Padovas, Italy.
Tasca
Silvia
S
Carli
Erika
E
Bianchini
Silvia
S
Furlanello
Tommaso
T
Martinez-Subiela
Silvia
S
Cerón
Jose J
JJ
D000209:Acute-Phase Proteins / Q000378:metabolism*; D000308:Adrenocortical Hyperfunction / Q000097:blood / Q000150:complications / Q000662:veterinary*; D000818:Animals; D004283:Dog Diseases / Q000097:blood*; D004285:Dogs; D005260:Female; D007249:Inflammation / Q000097:blood / Q000150:complications / Q000662:veterinary*; D008297:Male
D000209:Acute-Phase Proteins