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Circuit development in the master clock network of mammals
Vania Carmona-Alcocer1, Kayla E Rohr1, Deborah A M Joye1
1Department of Biomedical Sciences, Marquette University, Milwaukee, Wisconsin.
The European Journal of Neuroscience
|November 8, 2018
Summary
The development of the mammalian circadian system, controlled by the suprachiasmatic nucleus (SCN), is crucial for adult clock function. Understanding SCN development reveals how clock mechanisms mature and impact daily rhythms.
Area of Science:
- Neuroscience
- Chronobiology
- Developmental Biology
Background:
- Daily rhythms in mammals are governed by the suprachiasmatic nucleus (SCN), the master circadian clock.
- While endogenous, the circadian system requires development postnatally in many species.
- SCN development significantly influences adult circadian system function.
Purpose of the Study:
- To review the ontogeny of cellular and circuit function within the SCN.
- To emphasize spatial and temporal patterns of SCN development in rodents.
- To explore factors influencing aberrant clock function maturation.
Main Methods:
- Review of existing literature on SCN development in model rodents (mice, rats, hamsters).
- Analysis of spatial and temporal patterns of SCN maturation.
- Focus on cellular and circuit-level developmental processes.
Main Results:
- SCN development is a complex process involving specific spatial and temporal patterns.
- Early SCN development influences the establishment of adult circadian timing.
- Mechanisms guiding SCN maturation are critical for proper clock function.
Conclusions:
- Understanding SCN ontogeny is key to comprehending adult circadian system function.
- Aberrant maturation of SCN clock function can be linked to developmental factors.
- Further research into SCN development mechanisms will illuminate clock function disorders.
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