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 language | English |
|---|---|
| Pages (from-to) | 858-866 |
| Number of pages | 9 |
| Journal | The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences |
| Volume | 75 |
| Issue number | 5 |
| Early online date | 4 Mar 2020 |
| DOIs | |
| Publication status | Published - 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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Iain Fraser Cytometry Centre
Duncan, L. (Senior Application Scientist), Laird, A. (Technician) & Burgoyne, K. (Technician)
Institute of Medical SciencesResearch Facilities: Facility
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