The brain–body energy conservation model of aging

ED Shaulson, AA Cohen, M Picard - Nature Aging, 2024 - nature.com
Aging involves seemingly paradoxical changes in energy metabolism. Molecular damage
accumulation increases cellular energy expenditure, yet whole-body energy expenditure …

[HTML][HTML] A platform to map the mind–mitochondria connection and the hallmarks of psychobiology: the MiSBIE study

C Kelly, C Trumpff, C Acosta, S Assuras, J Baker… - Trends in Endocrinology …, 2024 - cell.com
Health emerges from coordinated psychobiological processes powered by mitochondrial
energy transformation. But how do mitochondria regulate the multisystem responses that …

[HTML][HTML] The energetic cost of allostasis and allostatic load

N Bobba-Alves, RP Juster, M Picard - Psychoneuroendocrinology, 2022 - Elsevier
Chronic psychosocial stress increases disease risk and mortality, but the underlying
mechanisms remain largely unclear. Here we outline an energy-based model for the …

OxPhos defects cause hypermetabolism and reduce lifespan in cells and in patients with mitochondrial diseases

G Sturm, KR Karan, AS Monzel, B Santhanam… - Communications …, 2023 - nature.com
Patients with primary mitochondrial oxidative phosphorylation (OxPhos) defects present with
fatigue and multi-system disorders, are often lean, and die prematurely, but the mechanistic …

Mutual linearity of nonequilibrium network currents

PE Harunari, S Dal Cengio, V Lecomte, M Polettini - Physical Review Letters, 2024 - APS
For continuous-time Markov chains and open unimolecular chemical reaction networks, we
prove that any two stationary currents are linearly related upon perturbations of a single …

The bioenergetic cost of building a metazoan

M Lynch - Proceedings of the National Academy of Sciences, 2024 - pnas.org
All life forms depend on the conversion of energy into biomass used in growth and
reproduction. For unicellular heterotrophs, the energetic cost associated with building a cell …

Polyploidy in Xenopus lowers metabolic rate by decreasing total cell surface area

C Cadart, J Bartz, G Oaks, MZ Liu, R Heald - Current Biology, 2023 - cell.com
Although polyploidization is frequent in development, cancer, and evolution, impacts on
animal metabolism are poorly understood. In Xenopus frogs, the number of genome copies …

Dissipation and energy propagation across scales in an active cytoskeletal material

PJ Foster, J Bae, B Lemma, J Zheng… - Proceedings of the …, 2023 - National Acad Sciences
Living systems are intrinsically nonequilibrium: They use metabolically derived chemical
energy to power their emergent dynamics and self-organization. A crucial driver of these …

Emergent spatiotemporal organization in stochastic intracellular transport dynamics

K Joshi, HM York, CS Wright, RR Biswas… - Annual Review of …, 2024 - annualreviews.org
The interior of a living cell is an active, fluctuating, and crowded environment, yet it maintains
a high level of coherent organization. This dichotomy is readily apparent in the intracellular …

Thermodynamic bounds on time-reversal asymmetry

S Liang, S Pigolotti - Physical Review E, 2023 - APS
Quantifying irreversibility of a system using finite information constitutes a major challenge in
stochastic thermodynamics. We introduce an observable that measures the time-reversal …