PMID- 36064726 OWN - NLM STAT- MEDLINE DCOM- 20220907 LR - 20240102 IS - 1751-0147 (Electronic) IS - 0044-605X (Print) IS - 0044-605X (Linking) VI - 64 IP - 1 DP - 2022 Sep 5 TI - Analytical performance of a canine ELISA monocyte chemoattractant protein-1 assay for use in cats and evaluation of circulating levels in normal weight and obese cats. PG - 22 LID - 10.1186/s13028-022-00640-3 [doi] LID - 22 AB - BACKGROUND: In human and murine obesity, adipose tissue dwelling macrophages and adipocytes produce monocyte chemoattractant protein-1 (MCP-1) leading to systemic low-grade inflammation. The aim of the study was to validate a canine MCP-1 ELISA assay for use in cats and to investigate whether a difference in MCP-1 concentrations could be detected between: a) cats having normal or elevated circulating serum amyloid A (SAA) levels and b) normal weight and obese cats. Serum obtained from 36 client-owned cats of various breed, age and sex with normal (n = 20) to elevated SAA (n = 16) was used for the validation of the canine MCP-1 ELISA assay. As no golden standard exists for measurement of inflammation, circulating MCP-1 concentrations were compared to SAA measurements, as an indicator of systemic inflammation. Analytical precision, dilution recovery and detection limit were calculated. A possible correlation between MCP-1 concentrations and obesity related measures (body fat percentage (BF%), insulin sensitivity and cytokine expression) were investigated in another population of 73 healthy, lean to obese, neutered domestic short-haired cats. RESULTS: Intra- (2.7-4.1%) and inter-assay (2.2-3.6%) coefficient of variation and dilution recovery were acceptable, and the detection limit was 27.1 pg/mL. MCP-1 did not correlate with SAA, and there was no difference between the inflammatory (SAA > 20 mg/L) and non-inflammatory group, due to a marked overlap in MCP-1 concentrations. Circulating MCP-1 concentrations were unaffected by BF% (r(2) = 2.7 x 10(-6), P = 0.21) and other obesity-related markers. CONCLUSIONS: The present canine ELISA assay seems to be able to measure circulating feline MCP-1. However, further studies are needed to determine its possible use for detecting inflammation in relation to disease processes or obesity-related low-grade inflammation in cats. CI - (c) 2022. The Author(s). FAU - Stenberg, Kathrine AU - Stenberg K AUID- ORCID: 0000-0003-3275-4256 AD - Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870, Frederiksberg, Denmark. katst@sund.ku.dk. FAU - Gensby, Line AU - Gensby L AD - Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870, Frederiksberg, Denmark. AD - AniCura Vangede Animal Hospital, Plantevej 2, 2870, Dyssegard, Denmark. FAU - Cremer, Signe Emilie AU - Cremer SE AD - Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870, Frederiksberg, Denmark. AD - Coloplast, Holtedam 1-3, 3050, Humlebaek, Denmark. FAU - Nielsen, Michelle Moller AU - Nielsen MM AD - Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870, Frederiksberg, Denmark. FAU - Bjornvad, Charlotte Reinhard AU - Bjornvad CR AD - Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870, Frederiksberg, Denmark. LA - eng GR - N2012-0024/Agria Djurforsakring/ PT - Journal Article DEP - 20220905 PL - England TA - Acta Vet Scand JT - Acta veterinaria Scandinavica JID - 0370400 RN - 0 (Chemokine CCL2) SB - IM MH - Animals MH - *Cat Diseases MH - Cats MH - Chemokine CCL2 MH - *Dog Diseases MH - Dogs MH - Enzyme-Linked Immunosorbent Assay/veterinary MH - Humans MH - *Inflammation/veterinary MH - *Insulin Resistance MH - Mice MH - Obesity/veterinary PMC - PMC9446815 OTO - NOTNLM OT - Feline OT - Inflammation OT - MCP-1 OT - Obesity OT - Sensitivity OT - Specificity OT - Validation COIS- The authors declare that they have no competing interests. EDAT- 2022/09/06 06:00 MHDA- 2022/09/08 06:00 PMCR- 2022/09/05 CRDT- 2022/09/05 23:59 PHST- 2021/12/21 00:00 [received] PHST- 2022/08/22 00:00 [accepted] PHST- 2022/09/05 23:59 [entrez] PHST- 2022/09/06 06:00 [pubmed] PHST- 2022/09/08 06:00 [medline] PHST- 2022/09/05 00:00 [pmc-release] AID - 10.1186/s13028-022-00640-3 [pii] AID - 640 [pii] AID - 10.1186/s13028-022-00640-3 [doi] PST - epublish SO - Acta Vet Scand. 2022 Sep 5;64(1):22. doi: 10.1186/s13028-022-00640-3.