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Equivalent servings of free-range reindeer promote greater net protein balance compared to commercial beef.

Authors
  • Coker, Melynda S1
  • Schutzler, Scott E2
  • Park, Sanghee2
  • Williams, Rick H2
  • Ferrando, Arny A2
  • Deutz, Nicolaas E P3
  • Wolfe, Robert R2
  • Coker, Robert H4, 5
  • 1 Department of Natural Resources and Environment, University of Alaska Fairbanks, Fairbanks, AK, USA.
  • 2 Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
  • 3 Department of Health and Kinesiology, Texas A and M University, College Station, TX, USA.
  • 4 Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK, USA.
  • 5 Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.
Type
Published Article
Journal
International Journal of Circumpolar Health
Publisher
Informa UK (Taylor & Francis)
Publication Date
Dec 01, 2021
Volume
80
Issue
1
Pages
1897222–1897222
Identifiers
DOI: 10.1080/22423982.2021.1897222
PMID: 33704030
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Wild game consumption has been associated with health benefits but the acute influence on human protein metabolism remains unknown. We compared feeding-induced responses of equivalent amounts of free-range reindeer (FR) and commercial beef (CB) on protein kinetics using stable isotope methodology. Seven participants (age: 40 ± 14 years; body mass index: 24 ± 3 kg/m2) completed two randomised studies, ingesting 2 oz of FR or CB. L-[ring 2H5]phenylalanine & L-[ring 2H2]tyrosine were delivered via primed, continuous intravenous infusion. Blood samples were collected during the basal period and following consumption of FR or CB. Feeding-induced changes in whole-body protein synthesis (PS), protein breakdown (PB), and net protein balance (NB) were determined via plasma sample isotope enrichment analysis by gas chromatography-mass spectrometry; plasma essential amino acid (EAA) concentrations were determined by liquid chromatography-electrospray ionisation-mass spectrometry. Plasma post-prandial EAA concentrations were higher with FR compared to CB (P < 0.05). The acute feeding-induced PS response was not different, but PB was reduced and contributed to a superior level of NB (P < 0.00001) in FR compared to CB. Our results demonstrate that FR may influence more favourable protein metabolism than CB. These data support potential health benefits of wild game onf whole-body protein.Abbreviations: BMI: body mass index; DIAAS: digestible indispensable amino acid score; CB: commercial beef; EAA: essential amino acids; FR: free-range reindeer; Ra: rate of appearance; UAF: University of Alaska Fairbanks; USDA: USA Department of Agriculture.

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