Journal
JOURNAL OF VETERINARY EMERGENCY AND CRITICAL CARE
Volume 28, Issue 1, Pages 9-19Publisher
WILEY
DOI: 10.1111/vec.12685
Keywords
acute phase proteins; canine; CRP; cytokines; SIRS
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ObjectiveTo evaluate C-reactive protein (CRP), interleukin 6 (IL-6), and tumor necrosis factor alpha (TNF-) kinetics in dogs with a systemic inflammatory response syndrome (SIRS) presented to an emergency service. We hypothesized serum CRP concentrations would increase and vary during hospitalization, and would correlate with plasma IL-6 and TNF- concentrations, vary in magnitude according to the underlying disease, and predict survival. DesignProspective, observational, clinical study. SettingUniversity emergency department. AnimalsSixty-nine dogs with SIRS weighing over 5 kg who could tolerate the blood sampling. InterventionsSerum and plasma were collected (and stored at -80 degrees C) at presentation (T0), after 6 (T6), 12 (T12), 24 (T24), and 72 (T72) hours, and at a follow-up visit at least 1 month after discharge (T1m). Underlying diseases were categorized as infection (I), neoplasia (N), trauma (T), gastric-dilation and volvulus (GDV), other gastrointestinal (GI), renal (R), and miscellaneous (M) disease. Measurements and Main ResultsSerum CRP concentration was measured using a canine-specific immunoturbidimetric assay. Biologically active plasma IL-6 and TNF- concentrations were assessed using bioassays. Forty-four dogs survived, 8 died, and 17 were euthanized. Nineteen dogs had follow-up visits. At T0, serum CRP concentration was above the reference interval in 73.1% (49/67), and was within the reference interval (0-141.9 nmol/L) throughout hospitalization in only 6% (4/67). Serum CRP concentrations were significantly higher (P < 0.0001) at T0 (882.9 1082.9 nmol/L) and at all time points during hospitalization (P < 0.0001) compared to T1m, with highest concentrations observed at T24 (906. 7 +/- 859.0 nmol/L). At T1m, serum CRP concentrations were within the reference interval (22.9 +/- 42.9 nmol/L) in 95% (18/19) of dogs. Logarithmic concentrations of serum CRP and plasma IL-6 were significantly correlated (P < 0.001, r = 0.479). None of the measured cytokines were associated with disease category or outcome. ConclusionsSerum CRP concentration is increased in dogs with SIRS, and decreases during treatment and hospitalization. Serum CRP, plasma IL-6, and plasma TNF- concentrations cannot predict outcome in dogs with SIRS.
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