Floras A, Holowaychuk M, Bienzle D, Bersenas A, Sharif S, Harvey T, Nordone S, Wood G. N-terminal pro-C-natriuretic peptide and cytokine kinetics in dogs with endotoxemia.
J Vet Intern Med 2014;
28:1447-53. [PMID:
25056958 PMCID:
PMC4895570 DOI:
10.1111/jvim.12409]
[Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/06/2014] [Accepted: 06/11/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND
Serum N-terminal pro-C-natriuretic peptide (NT-proCNP) concentration at hospital admission has sufficient sensitivity and specificity to differentiate naturally occurring sepsis from nonseptic systemic inflammatory response syndrome (SIRS). However, little is known about serum NT-proCNP concentrations in dogs during the course of sepsis.
OBJECTIVE
To determine serum NT-proCNP and cytokine kinetics in dogs with endotoxemia, a model of canine sepsis.
SAMPLES
Eighty canine serum samples.
METHODS
Eight healthy adult Beagles were randomized to receive Escherichia coli lipopolysaccharide (LPS, 5 μg/kg) or placebo (0.9% NaCl) as a single IV dose in a randomized crossover study. Serum collected at 0, 1, 2, 4, and 24 hours was stored at -80°C for batch analysis. Serum NT-proCNP was measured by ELISA and 13 cytokines and chemokines by multiplex magnetic bead-based assay.
RESULTS
Serum NT-proCNP concentrations did not differ significantly between LPS- and placebo-treated dogs at any time. When comparing serum cytokine concentrations, LPS-treated dogs had higher interleukin-6 (IL-6), IL-10, TNF-α and KC-like at 1, 2, and 4 hours; higher CCL2 at 1, 2, 4, and 24 hours; and higher IL-8 and CXCL10 at 4 hours compared to placebo-treated dogs. There were no differences in serum GM-CSF, IFN-γ, IL-2, IL-7, IL-15 or IL-18 between LPS- and placebo-treated dogs.
CONCLUSIONS AND CLINICAL IMPORTANCE
Serum NT-proCNP concentration does not change significantly in response to LPS administration in healthy dogs. Certain serum cytokine and chemokine concentrations are significantly increased within 1-4 hours after LPS administration and warrant further investigation as tools for the detection and management of sepsis in dogs.
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