Cited by 26Circadian rhythm and melatoninImpact of Light on Environment and HealthLight effects on plants

Light color importance for circadian entrainment in a diurnal (Octodon degus) and a nocturnal (Rattus norvegicus) rodent

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Bonmati-Carrion, Maria Angeles, Baño-Otalora, Beatriz, Madrid, Juan Antonio, Rol, Maria Angeles·2017·Scientific Reports

Abstract

The central circadian pacemaker (Suprachiasmatic Nuclei, SCN) maintains the phase relationship with the external world thanks to the light/dark cycle. Light intensity, spectra, and timing are important for SCN synchronisation. Exposure to blue-light at night leads to circadian misalignment that could be avoided by using less circadian-disruptive wavelengths. This study tests the capacity of a diurnal Octodon degus and nocturnal Rattus norvegicus to synchronise to different nocturnal lights. Animals were subjected to combined red-green-blue lights (RGB) during the day and to: darkness; red light (R); combined red-green LED (RG) lights; and combined red-green-violet LED (RGV) lights during the night. Activity rhythms free-ran in rats under a RGB:RG cycle and became arrhythmic under RGB:RGV. Degus remained synchronised, despite the fact that day and night-time lighting systems differed only in spectra, but not in intensity. For degus SCN c-Fos activation by light was stronger with RGB-light than with RGV. This could be relevant for developing lighting that reduces the disruptive effects of nocturnal light in humans, without compromising chromaticity.

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  • Studies of light at night exposure in diurnal rodent species generally yield similar affective responses to nocturnal rodents.

    “Studies of light at night exposure in diurnal rodent species generally yield similar affective responses to nocturnal rodents57,58.”

    From Circadian rhythm disruption and mental health (2020) · cites this paper as [57]

    The Results section compares how nocturnal light affects activity rhythms in diurnal degus and nocturnal rats, not their affective responses. A study of depressive-like responses in a diurnal rodent appears in the References, but this paper does not report a comparison of affective responses between diurnal and nocturnal rodents (searched: affective, depressive, anxiety). (LLM, conf=0.76)

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Authors
Bonmati-Carrion, M. A., Baño-Otalora, B., Madrid, J. A., & Rol, M. A.
Affiliations
Instituto Murciano de Investigación Biosanitaria (ES)
Corresponding author
Madrid, Juan Antonio
Venue
Scientific Reports
Published
2017-08-18
Volume
7
Issue
1
Pages
8846-8846
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2746060663
Cited by
26
References
83
Citations by year
2026: 2 · 2025: 3 · 2023: 3 · 2022: 4 · 2021: 5 · 2020: 5 · 2019: 2 · 2018: 2
FWCI
1.51
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Hispana (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Fundación Séneca (CB16/10/00239)
  • Centro de Investigación Biomédica en Red Fragilidad y Envejecimiento Saludable (CB16/10/00239)
  • Ministerio de Economía y Competitividad (CB16/10/00239, SAF2013-49132-C2-1-R, RD12/0043/0011, AYA2015-71542-REDT)
  • Ministerio de Ciencia e Innovación (AP2009-1051, RD12/0043)
  • Instituto de Salud Carlos III (RD12/0043/0011, CB16/10/00239, RD12/0043)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Physical Sciences › Environmental Science › Global and Planetary Change › Impact of Light on Environment and Health
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
Keywords
circadian entrainment, light color, suprachiasmatic nucleus, Octodon degus, Rattus norvegicus, circadian misalignment, blue light, c-Fos activation, circadian rhythm disruption, lighting design
MeSH terms
Animals, Behavior, Animal, Circadian Rhythm, Color, Female, Light, Lighting, Male, Motor Activity, Rodentia, Suprachiasmatic Nucleus, Photoperiod, Octodon

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