Dynamic energy budget approaches for modelling organismal ageing

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Abstract

Ageing is a complex multifactorial process involving a progressive physiological decline that, ultimately, leads to the death of an organism. It involves multiple changes in many components that play fundamental roles under healthy and pathological conditions. Simultaneously, every organism undergoes accumulative 'wear and tear' during its lifespan, which confounds the effects of the ageing process. The scenario is complicated even further by the presence of both age-dependent and age-independent competing causes of death. Various manipulations have been shown to interfere with the ageing process. Calorie restriction, for example, has been reported to increase the lifespan of a wide range of organisms, which suggests a strong relation between energy metabolism and ageing. Such a link is also supported within the main theories for ageing: The free radical hypothesis, for instance, links oxidative damage production directly to energy metabolism. The Dynamic Energy Budgets (DEB) theory, which characterizes the uptake and use of energy by living organisms, therefore constitutes a useful tool for gaining insight into the ageing process. Here we compare the existing DEB-based modelling approaches and, then, discuss how new biological evidence could be incorporated within a DEB framework. © 2010 The Royal Society.

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CITATION STYLE

APA

Van Leeuwen, I. M. M., Vera, J., & Wolkenhauer, O. (2010). Dynamic energy budget approaches for modelling organismal ageing. Philosophical Transactions of the Royal Society B: Biological Sciences, 365(1557), 3443–3454. https://doi.org/10.1098/rstb.2010.0071

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