Short-term caloric restriction attenuates obesity- induced pro-inflammatory response in male rhesus macaques

Hollis Wright, Mithila Handu, Allen Jankeel, Ilhem Messaoudi, Oleg Varlamov

Research output: Contribution to journalArticle

Abstract

White adipose tissue (WAT) hypertrophy is an essential hallmark of obesity and is associated with the activation of resident immune cells. While the benefits of caloric restriction (CR) on health span are generally accepted, its effects on WAT physiology are not well understood. We previously demonstrated that short-term CR reverses obesity in male rhesus macaques exposed to a high-fat Western-style diet (WSD). Here, we analyzed subcutaneous WAT biopsies collected from this cohort of animals before and after WSD and following CR. This analysis showed that WSD induced adipocyte hypertrophy and inhibited β-adrenergic-simulated lipolysis. CR reversed adipocyte hypertrophy, but WAT remained insensitive to β-adrenergic agonist stimulation. Whole-genome transcriptional analysis revealed that β3-adrenergic receptor and de novo lipogenesis genes were downregulated by WSD and remained downregulated after CR. In contrast, WSD-induced pro-inflammatory gene expression was effectively reversed by CR. Furthermore, peripheral blood monocytes isolated during the CR period exhibited a significant reduction in the production of pro-inflammatory cytokines compared to those obtained after WSD. Collectively, this study demonstrates that short-term CR eliminates an obesity-induced pro-inflammatory response in WAT and peripheral monocytes.

Original languageEnglish (US)
Article number511
JournalNutrients
Volume12
Issue number2
DOIs
StatePublished - Feb 2020

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Keywords

  • Adipose tissue
  • Caloric restriction
  • High-fat diet
  • Nonhuman primates
  • Obesity
  • Transcriptome
  • Western-style diet

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

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