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The effects of graded levels of calorie restriction XV: phase space attractors reveal distinct behavioral phenotypes

  • South China University of Technology
  • Chinese Academy of Sciences
  • University of Washington
  • Soochow University

Research output: Contribution to journalArticlepeer-review

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Abstract

Calorie restriction (CR) has a positive impact on health and lifespan. Previous work however does not reveal the whole underlying mechanism of bahavioral phenotypes under CR. We propose a new approach based on phase space reconstruction (PSR) to analyze the bahavioral responses of mice to graded CR. This involved reconstructing high-dimensional attractors which topologically represent the intrinsic dynamics of mice based on low-dimensional time series of movement counts observed during the 90 day time course of restriction. PSR together with correlation dimensions (CD), Kolmogorov entropy (KE) and multifractal spectra builds a map from internal attractors to the phenotype of mice and reveals the mice with increasing CR levels undergo significant changes from a normal to a new state. Features of the attractors (CD and KE) were significantly associated with gene expression profiles in the hypothalamus of the same individuals.
Original languageEnglish
Pages (from-to)858-866
Number of pages9
JournalThe Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Volume75
Issue number5
Early online date4 Mar 2020
DOIs
Publication statusPublished - May 2020

Bibliographical note

© The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: [email protected].

Keywords

  • calorie restriction
  • phase space reconstruction
  • attractors
  • gene expression
  • Phase space reconstruction
  • Calorie restriction
  • Attractors
  • Gene expression
  • MORTALITY
  • PROTEIN RESTRICTION
  • BODY-TEMPERATURE
  • KOLMOGOROV-ENTROPY
  • TRANSCRIPTOMIC RESPONSES
  • IMPACT
  • SHORT-TERM CALORIE
  • TIME-SERIES
  • PHYSICAL-ACTIVITY
  • LIFE

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