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Open AccessArticle

Influence of Dietary Ingredients on Lean Body Percent, Uremic Toxin Concentrations, and Kidney Function in Senior-Adult Cats

1
Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, Oregon, OR 97333-4802, USA
2
Pet Nutrition Center, Hill’s Pet Nutrition, Topeka, Kansas, KS 66617-1587, USA
3
IDEXX Laboratories, One IDEXX Drive, Westbrook, ME 04092, USA
*
Author to whom correspondence should be addressed.
Metabolites 2019, 9(10), 238; https://doi.org/10.3390/metabo9100238
Received: 19 August 2019 / Revised: 16 October 2019 / Accepted: 17 October 2019 / Published: 19 October 2019
The goal of this study was to determine if modification of currently available maintenance foods with alternative ingredients, botanicals (fruit and vegetables), and increased amounts of functional lipids (fish oil) would delay the age-associated decline in glomerular filtration rate (GFR) and lean body mass (LBM) in senior-adult cats. Forty-four healthy cats (mean age, 12.2 years; range 10.7 to 14.0 years) were fed one of three foods (n = 14 or 15 per group) for six months: control food with 32.6% protein (as fed), or control food supplemented with increasing amounts of functional food bioactives: fish oil, fruit and vegetables, different protein sources, and <32.0% protein [functional foods one (FF1) and two (FF2)]. Senior-adult cats were compared before and after the feeding trial with 20 young-adult cats (mean age, 3.5 years; range 2.1 to 4.9 years). Compared with younger cats, older cats had decreased lean-body percent and serum albumin concentrations. Feeding FF1 and FF2 for six months increased lean-body percent, maintained serum albumin concentrations, increased GFR, decreased serum symmetric dimethylarginine (SDMA) concentrations, and decreased concentrations of the uremic toxin 3-indoxyl sulfate. These dietary changes may assist in offsetting sarcopenia and the chronic inflammation associated with aging in senior-adult cats. View Full-Text
Keywords: cats; circulating metabolomes; glomerular filtration rate; lean body mass; renal biomarkers cats; circulating metabolomes; glomerular filtration rate; lean body mass; renal biomarkers
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Hall, J.A.; Jackson, M.I.; Farace, G.; Yerramilli, M.; Jewell, D.E. Influence of Dietary Ingredients on Lean Body Percent, Uremic Toxin Concentrations, and Kidney Function in Senior-Adult Cats. Metabolites 2019, 9, 238.

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