ArticleActa veterinaria Scandinavica2023
Acute phase protein concentration in pharyngeal swabs from clinically healthy commercial dairy calves.
Article in Acta veterinaria Scandinavica, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundEarly diagnosis of disease in calves is crucial for fast recovery and prudent use of antibiotics. The serum concentration of acute phase proteins (APPs) is up- or downregulated in response to tissue injury and has been studied widely in human medicine. There is growing interest in using APPs as biomarkers for different diseases and as a tool to initiate and monitor treatment in veterinary medicine as well. The concentration of APPs in saliva in healthy calves has not been established and the use of pharyngeal swabs offers a non-invasive alternative to blood sampling. Pharyngeal swabs, tracheal aspirate (TA) and blood samples were collected from 84 clinically healthy commercial dairy calves and analyzed for the APPs serum amyloid A (SAA), haptoglobin (Hp) and lipopolysaccharide binding protein (LBP).
resultsWe found detectable concentrations of SAA, Hp and LBP in pharyngeal swabs from calves, as well as in TA and serum. There were no biologically interesting correlations between the SAA concentrations in serum and TA or pharyngeal swabs. This also applied to Hp and LBP concentrations in serum and TA or pharyngeal swabs.
conclusionsSAA, Hp and LBP can be measured in saliva and TA from calves, but there was no correlation between the specific APP concentration in serum and pharyngeal swab or TA. There was a considerable technical variation in the sampling method for both pharyngeal swab and TA, and further validation of the methods is needed.
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