PMID- 28994640 OWN - NLM STAT- MEDLINE DCOM- 20190909 LR - 20190909 IS - 1532-2750 (Electronic) IS - 1098-612X (Linking) VI - 20 IP - 10 DP - 2018 Oct TI - Serum symmetric dimethylarginine and creatinine in Birman cats compared with cats of other breeds. PG - 905-912 LID - 10.1177/1098612X17734066 [doi] AB - Objectives The aim of this study was to assess whether, in contrast to serum creatinine, which is higher in Birman cats than in other breeds, the serum concentration of symmetric dimethylarginine (SDMA) is comparable in clinically healthy Birmans and in the general feline population. This could allow, in this breed, to better evaluate chronic kidney disease (CKD). Methods Serum creatinine and SDMA were measured in clinically healthy Birmans (n = 50) and in cats of other breeds (n = 46), and the results were statistically compared. A breed-specific reference interval (RI) was established for Birmans and compared with the RI for the general feline population (0.0-14.0 microg/dl). Results Creatinine (1.58 +/- 0.36 mg/dl) and SDMA (12.2 +/- 2.8 microg/dl) were higher ( P <0.001) in Birmans than in cats of other breeds (1.19 +/- 0.17 mg/dl; 10.3 +/- 2.5 microg/dl). In 20/50 Birman cats (40.0%) serum creatinine was higher than both the non-breed-specific RI of our laboratory and the threshold recommended to classify cats as IRIS stage 2 (1.6 mg/dl). The concentration of SDMA was higher than the pre-existing RI in 10/50 Birmans (20.0%) and in four cats of other breeds (8.7%). Among Birmans, the proportion of cats with SDMA >14 microg/dl was lower ( P <0.017) than the proportion of cats with creatinine >1.60 mg/dl. However, the deviation from the upper limit of the RI was lower than the analytical variability of the method in 7/10 Birmans and in 4/4 cats of other breeds. The breed-specific RI (3.5-18.7 microg/dl) overlapped with the pre-existing one. Conclusions and relevance SDMA may be a better marker of CKD in Birman cats than creatinine when non-breed-specific RIs are utilised. The coupled analysis of creatinine and SDMA could help prevent errors in diagnosing and staging CKD in Birman cats. FAU - Paltrinieri, Saverio AU - Paltrinieri S AD - 1 Department of Veterinary Medicine, University of Milan, Milan, Italy. AD - 2 Veterinary Teaching Hospital, University of Milan, Lodi, Italy. FAU - Giraldi, Marco AU - Giraldi M AD - 1 Department of Veterinary Medicine, University of Milan, Milan, Italy. AD - 2 Veterinary Teaching Hospital, University of Milan, Lodi, Italy. FAU - Prolo, Amanda AU - Prolo A AD - 1 Department of Veterinary Medicine, University of Milan, Milan, Italy. FAU - Scarpa, Paola AU - Scarpa P AD - 1 Department of Veterinary Medicine, University of Milan, Milan, Italy. AD - 2 Veterinary Teaching Hospital, University of Milan, Lodi, Italy. FAU - Piseddu, Eleonora AU - Piseddu E AD - 3 IDEXX Laboratories, Novara, Italy. FAU - Beccati, Massimo AU - Beccati M AD - 4 ADDA, Veterinary Clinic, Capriate San Gervasio, Bergamo, Italy. FAU - Graziani, Benedetta AU - Graziani B AD - 5 Di Gregoli-Tomei Veterinary Clinic, S Macario in Piano, Lucca, Italy. FAU - Bo, Stefano AU - Bo S AD - 6 Bo-Ferro Veterinary Clinic, Turin, Italy. LA - eng PT - Journal Article DEP - 20171010 PL - England TA - J Feline Med Surg JT - Journal of feline medicine and surgery JID - 100897329 RN - 0 (Biomarkers) RN - 49787G1ULV (symmetric dimethylarginine) RN - 94ZLA3W45F (Arginine) RN - AYI8EX34EU (Creatinine) SB - IM MH - Animals MH - Arginine/*analogs & derivatives/blood MH - Biomarkers/blood MH - Cat Diseases/*blood MH - Cats MH - Creatinine/*blood MH - Female MH - Male MH - Pedigree MH - Reference Values MH - Renal Insufficiency, Chronic/blood/*veterinary EDAT- 2017/10/11 06:00 MHDA- 2019/09/10 06:00 CRDT- 2017/10/11 06:00 PHST- 2017/10/11 06:00 [pubmed] PHST- 2019/09/10 06:00 [medline] PHST- 2017/10/11 06:00 [entrez] AID - 10.1177/1098612X17734066 [doi] PST - ppublish SO - J Feline Med Surg. 2018 Oct;20(10):905-912. doi: 10.1177/1098612X17734066. Epub 2017 Oct 10.