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J Vet Diagn Invest ; 32(5): 664-674, 2020 Sep.
Article in English | MEDLINE | ID: mdl-32715975

ABSTRACT

Innate immunity plays a central role in the pathogenesis of chronic inflammatory enteropathies (CIE) in dogs, and further evaluation of the innate immune receptor for advanced glycation end-products (RAGE) is warranted. We measured serum concentrations of decoy receptor soluble RAGE (sRAGE) in 102 dogs diagnosed with CIE, and evaluated relationships with clinical disease severity, histologic lesion severity, concentrations of serum C-reactive protein (CRP), and serum and fecal calprotectin, S100A12, and alpha1-proteinase inhibitor (α1PI). Serum sRAGE levels were not associated with clinical disease activity, serum CRP, serum and fecal α1PI, calprotectin, or S100A12 concentrations. Microscopic lesions in the duodenum were more severe in dogs with serum sRAGE concentration ≤ 340 ng/L (p = 0.013). Serum sRAGE levels were weakly and inversely correlated with the severity of lymphoplasmacytic infiltration in the gastric antrum and duodenum, and with crypt dilation and the neutrophilic infiltrate in the duodenum, in univariate analysis (all p < 0.05), but none of the correlations remained statistically significant after correction for multiple comparisons. Our study confirms that CIE in dogs is associated with decreased serum sRAGE concentrations, suggesting a dysregulated sRAGE/RAGE axis.


Subject(s)
Blood/metabolism , Dog Diseases/diagnosis , Inflammation/veterinary , Receptor for Advanced Glycation End Products/deficiency , Animals , Biomarkers/blood , Blood Chemical Analysis/veterinary , Chronic Disease/veterinary , Dogs , Female , Inflammation/diagnosis , Male , Receptor for Advanced Glycation End Products/blood , Severity of Illness Index
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