Evaluation of an onco-diet on body composition and inflammatory status of dogs with mammary tumor-Pilot study

PLoS One. 2023 Jul 6;18(7):e0287797. doi: 10.1371/journal.pone.0287797. eCollection 2023.

Abstract

A high-protein hypercaloric diet enriched with glutamine and omega-3 polyunsaturated fatty acids was called an onco-diet. The goal was to verify the modulation of the inflammatory response and body composition of female dogs with mammary tumor after mastectomy, during onco-diet consumption, using a randomized, double-blinded, clinical trial. Six bitches (average age of 8.6 years) were allocated into Control Group-diet without glutamine, EPA and DHA supplementation; and six bitches (10.0 years) were allocated into Test-diet enriched with glutamine and omega-3. Serum measurements of TNF-α, IL-6, IL-10, IGF-1, C-reactive protein and determination of body composition were performed at pre- and post-surgical times. Statistical tests were used to compare the nutrient intake and dietary effects on inflammatory variables between the diets. No differences in concentrations of different cytokines (p>0.05) and C-reactive protein (CRP) (p = 0.51) were observed between the groups. The test group had a higher concentration of IGF-1 (p<0.05), higher percentage of muscle mass (p<0.01) and lower body fat (p<0.01), but the difference was present from initial and throughout the study. Onco-diet, enriched with glutamine and omega-3, in the amounts evaluated in this study, was not sufficient to modulate the inflammation and body composition of female dogs with mammary tumors submitted to unilateral mastectomy.

Publication types

  • Randomized Controlled Trial, Veterinary
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Body Composition
  • C-Reactive Protein / metabolism
  • Diet / veterinary
  • Docosahexaenoic Acids
  • Dogs
  • Fatty Acids, Omega-3* / metabolism
  • Female
  • Glutamine / metabolism
  • Insulin-Like Growth Factor I / metabolism
  • Mastectomy
  • Neoplasms*
  • Pilot Projects

Substances

  • C-Reactive Protein
  • Docosahexaenoic Acids
  • Fatty Acids, Omega-3
  • Glutamine
  • Insulin-Like Growth Factor I

Grants and funding

This research was funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico [CNPq, process 13029446816]. First author is funded by a CNPq scholarship. Grandfood Indústria e Comércio LTDA, São Paulo, Brazil provided support in the form of salaries for author CFFP and funded this study, produced and supplied the diets. The specific roles of these authors are articulated in the ‘author contributions’ section. Funders did not have any role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.