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Erschienen in: The journal of nutrition, health & aging 10/2016

14.12.2015

Nutritional interventions that slow the age-associated decline in renal function in a canine geriatric model for elderly humans

verfasst von: Jean A. Hall, M. Yerramilli, E. Obare, M. Yerramilli, K. S. Panickar, G. Bobe, D. E. Jewell

Erschienen in: The journal of nutrition, health & aging | Ausgabe 10/2016

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Abstract

Objective

To determine the effects of feeding traditional and renal protective foods (RPF) supplemented with functional food bioactives on glomerular filtration rate (GFR), lean body percent (LB%), and selected circulating biomarker and metabolite concentrations in a geriatric dog model.

Design

Randomized block design and cross-sectional study. Setting: Hill’s Pet Nutrition, Inc. dog colony.

Participants

Eighty-one geriatric dogs (mean age, 10.4; range, 7.9-14.2 years) and 30 mature-adult dogs (mean age, 5.0; range, 3.3-6.9 years).

Intervention

Geriatric dogs were fed one of three foods (n = 27 per group) for 6 months: a traditional RPF (control) that was energy dense and mildly protein-restricted, or control food supplemented with increasing amounts of functional food bioactives: fish oil, lipoic acid, fruits and vegetables, and higher quality protein sources [functional foods one (FF1) and two (FF2)]. Geriatric dogs were compared before and after the feeding trial with mature adult dogs.

Measurements

Renal function was assessed by GFR, LB% was determined by dual energy x-ray absorptiometry, and circulating biomarkers and metabolites were measured in blood.

Results

Before the feeding trial, GFR (+28.2%), LB% (+18.6%), and serum total protein (+10.0%) were higher in mature versus healthy geriatric dogs (all P<0.001). Geriatric dogs consuming all three foods increased (P<0.001) GFR over time; group averages ranged from 13.0–16.9%. Dogs fed the highest supplemented level of bioactives (FF2) had lower (P<0.001) symmetric dimethylarginine (SDMA) concentrations (-14.3%). Feeding functional foods did not alter body weight, but increased (P<0.001) serum protein concentration (+6.7%).

Conclusion

Supplementation with functional food bioactives can temporarily reverse the age-associated decline in renal function and serum total protein.
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Metadaten
Titel
Nutritional interventions that slow the age-associated decline in renal function in a canine geriatric model for elderly humans
verfasst von
Jean A. Hall
M. Yerramilli
E. Obare
M. Yerramilli
K. S. Panickar
G. Bobe
D. E. Jewell
Publikationsdatum
14.12.2015
Verlag
Springer Paris
Erschienen in
The journal of nutrition, health & aging / Ausgabe 10/2016
Print ISSN: 1279-7707
Elektronische ISSN: 1760-4788
DOI
https://doi.org/10.1007/s12603-015-0636-3

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