Related Experiment Video
Updated: Jun 24, 2025
The Use of Mouse Splenocytes to Assess Pathogen-associated Molecular Pattern Influence on Clock Gene Expression
Published on: July 24, 2018
Microglia, circadian rhythm and lifestyle factors
Han Jiao1, Andries Kalsbeek1, Chun-Xia Yi1
1Department of Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, the Netherlands; Department of Clinical Chemistry, Laboratory of Endocrinology, Amsterdam University Medical Center, location AMC, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience, Amsterdam, the Netherlands.
Abstract:
Microglia, a vital homeostasis-keeper of the central nervous system, perform critical functions such as synaptic pruning, clearance of cellular debris, and participation in neuroinflammatory processes. Recent research has shown that microglia exhibit strong circadian rhythms that not only actively regulate their own immune activity, but also affect neuronal function. Disruptions of the circadian clock have been linked to a higher risk of developing a variety of diseases. In this article we will provide an overview of how lifestyle factors impact microglial function, with a focus on disruptions caused by irregular sleep-wake patterns, reduced physical activity, and eating at the wrong time-of-day. We will also discuss the potential connection between these lifestyle factors, disrupted circadian rhythms, and the role of microglia in keeping brain health. This article is part of the Special Issue on "Microglia".
Insights
Lifestyle factors like poor sleep, inactivity, and irregular eating disrupt microglia, the brain's immune cells. This disruption impacts brain health and may increase disease risk by affecting circadian rhythms.
Area of Science:
- Neuroscience
- Immunology
- Chronobiology
Background:
- Microglia are crucial for central nervous system homeostasis, involved in synaptic pruning, debris clearance, and neuroinflammation.
- Microglia display significant circadian rhythms influencing their immune activity and neuronal function.
- Disruptions to the circadian clock are associated with increased disease risk.
Purpose of the Study:
- To provide an overview of how lifestyle factors affect microglial function.
- To focus on disruptions caused by irregular sleep-wake patterns, reduced physical activity, and mistimed eating.
- To discuss the link between lifestyle, circadian disruption, and microglial roles in brain health.
Main Methods:
- Literature review and synthesis of current research on microglia, circadian rhythms, and lifestyle factors.
- Analysis of studies investigating the impact of sleep, physical activity, and eating patterns on microglial function.
- Exploration of the mechanistic links between lifestyle-induced circadian disruption and microglial-mediated brain health.
Main Results:
- Irregular sleep-wake cycles, sedentary behavior, and non-timed food intake disrupt microglial circadian rhythms.
- These disruptions can impair microglial homeostatic functions and promote neuroinflammation.
- Evidence suggests a connection between lifestyle-induced circadian disruption and compromised brain health via microglial pathways.
Conclusions:
- Lifestyle factors significantly impact microglial function and circadian regulation within the brain.
- Maintaining regular sleep, physical activity, and eating schedules is vital for supporting microglial health and overall brain well-being.
- Further research is warranted to fully elucidate the therapeutic potential of targeting lifestyle-induced circadian disruptions for neurological disorders.
