期刊
FRONTIERS IN PHYSIOLOGY
卷 13, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphys.2022.968574
关键词
gap junction; circadian; innexin; connexin; neuronal circuit; electrical synapse
类别
资金
- Science and Engineering Research Board Core Research Grant [CRG/2019/006802]
- JNCASR Intramural funds
- DST-SERB [CRG/2019/006802]
- DST-INSPIRE
- VS DST-INSPIRE Research Fellowship
Coherent circadian rhythms in behavior rely on well-coupled networks of circadian oscillators, with electrical synapses and chemical synapses interacting in neuronal networks. While the role of chemical synapses in these networks has been extensively studied, the role of electrical synapses in circadian networks remains relatively understudied and requires further exploration.
Several studies have indicated that coherent circadian rhythms in behaviour can be manifested only when the underlying circadian oscillators function as a well-coupled network. The current literature suggests that circadian pacemaker neuronal networks rely heavily on communication mediated by chemical synapses comprising neuropeptides and neurotransmitters to regulate several behaviours and physiological processes. It has become increasingly clear that chemical synapses closely interact with electrical synapses and function together in the neuronal networks of most organisms. However, there are only a few studies which have examined the role of electrical synapses in circadian networks and here, we review our current understanding of gap junction proteins in circadian networks of various model systems. We describe the general mechanisms by which electrical synapses function in neural networks, their interactions with chemical neuromodulators and their contributions to the regulation of circadian rhythms. We also discuss the various methods available to characterize functional electrical synapses in these networks and the potential directions that remain to be explored to understand the roles of this relatively understudied mechanism of communication in modulating circadian behaviour.
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