Life span is prolonged in food-restricted autoimmune-prone (NZB×NZW)F(1) mice fed a diet enriched with (n-3) fatty acids

Christopher A. Jolly, Alagarraju Muthukumar, C. P Reddy Avula, Dean Troyer, Gabriel Fernandes

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

Moderate food and/or energy (calorie) restriction delays age-related immune dysfunction and prolongs life span in multiple animal models. The amount and type of dietary fatty acids can also profoundly affect life span. Marine-derived fish oils contain (n-3) fatty acids, which have potent anti-inflammatory properties. We therefore examined the influence of food restriction (40% overall reduction in intake of all dietary components) combined with substitution of fish oil for corn oil in a factorial design. Autoimmune-prone (NZB×NZW)F(1) (B/W) mice, which develop fatal autoimmune renal disease, were used. The food-restricted/fish oil diet maximally extended median life span to 645 d (vs. 494 d for the food-restricted corn oil diet). Similarly, fish oil prolonged life span in the ad libitum-fed mice to 345 d (vs. 242 for the ad libitum/corn oil diet), increased life span was partially associated with decreased body weight, blunting renal proinflammatory cytokine (interferon-γ, interleukins-10 and -12 and tumor necrosis factor-α) levels and lower nuclear factor-κB (NF-κB). Reductions in NF-κB were preceded by enhanced superoxide dismutase, catalase and glutathione peroxidase activities. These findings demonstrate the profound additive effects of food restriction and (n-3) fatty acids in prolonging life span in BAN mice. These observations may have additional implications in the management of obesity, diabetes, cancer and/or the aging process.

Original languageEnglish (US)
Pages (from-to)2753-2760
Number of pages8
JournalJournal of Nutrition
Volume131
Issue number10
DOIs
StatePublished - 2001

Keywords

  • (n-3) fatty acids
  • Autoimmunity
  • Food restriction
  • Mice
  • Renal disease

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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