Logo image
Time-of-day determines neuronal damage and mortality after cardiac arrest
Journal article   Open access   Peer reviewed

Time-of-day determines neuronal damage and mortality after cardiac arrest

Zachary M. Weil, Kate Karelina, Alan J. Su, Jacqueline M. Barker, Greg J. Norman, Ning Zhang, A. Courtney DeVries and Randy J. Nelson
Neurobiology of disease, v 36(2), pp 352-360
2009
PMID: 19664712
url
https://doi.org/10.1016/j.nbd.2009.07.032View
Published, Version of Record (VoR)Open Access (License Unspecified) Open

Abstract

Cardiac arrest Global ischemia Heart disease Microglia Proinflammatory cytokines Circadian Rhythms
Ischemic events in humans are not evenly distributed across the day. To discriminate between temporal differences in the incidence of ischemia and susceptibility to ischemic events, we examined the outcome of global ischemia in a murine model at three time points during the day. Global cerebral ischemia in mice during the light phase impairs survival and exacerbates outcome compared to ischemia at other times of the day. Specifically, mice that underwent cardiac arrest during the light phase had greater numbers of degenerating neurons, greater microglial activation, and increased proinflammatory cytokine production in the ischemia-vulnerable hippocampus, as well as increased locomotor activity. Time-of-day differences were not altered by the melatonin receptor antagonist luzindole. Our results document that brain tissue displays endogenous fluctuations in susceptibility to ischemic damage and demonstrate that small differences in time of onset can significantly influence ischemic outcomes.

Metrics

5 Record Views
24 citations in Scopus

Details

UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#3 Good Health and Well-Being

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
Web of Science research areas
Neurosciences
Logo image