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Digital biomarkers enable automated, longitudinal monitoring in a mouse model of aging

Baran, Szczepan, Lim, Maria A., Do, Johnny P., Stolyar, Polina, Rabe, Mark D., Schaevitz, Laura R. and Cadena, Samuel (2021) Digital biomarkers enable automated, longitudinal monitoring in a mouse model of aging. The journals of gerontology. Series A, Biological sciences and medical sciences. ISSN 1758535X


To understand the growing needs of an aging human population, there is demand for scalable and reproducible approaches to study animal models of aging and to test novel therapeutic interventions. We investigated the sensitivity and utility of a continuous monitoring platform and its digital biomarkers (motion, breathing rate, and wheel running) to evaluate behavioral and physiological differences between "young" (12 weeks) and "old" (23 months) male C57BL/6J mice with or without running wheels in the home cage. Compared to young mice, old mice showed marked reductions in motion and breathing rate, as well as altered circadian rhythms. Mice without running wheels possessed lower breathing rates compared to their counterparts with running wheels. Digital biomarkers showed age-dependent changes in response to routine procedures (cage changes and blood sampling) and alterations in subjects that unexpectedly reached endpoint. Continuous collection of digital biomarkers in the home cage can enhance current approaches by providing unbiased longitudinal monitoring for large-scale aging studies.

Item Type: Article
Keywords: 3Rs Behavior Breathing rate Endpoint detection Rodent
Date Deposited: 10 Mar 2021 00:45
Last Modified: 10 Mar 2021 00:45


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