Chronotype changes during puberty depend on gonadal hormones in the slow-developing rodent, Octodon degus
Open accessAbstract
During puberty, human adolescents develop a later chronotype, exhibiting a delay in the timing of rest and activity as well as other daily physiological rhythms. The purpose of this study was to determine whether similar changes in chronotype occur during puberty in a laboratory rodent species, and, if so, to determine whether they are due to pubertal hormones acting on the circadian timekeeping system. To test this hypothesis, we carefully tracked daily activity rhythms across puberty in the slow-developing rodent Octodon degus. We confirmed that male degus showed a large reorganization of activity rhythms that correlated with secondary sex development during puberty, including a loss of bimodality and a 3-5 h phase-advance. Similar to humans, this circadian reorganization showed distinct sex differences, with females showing little change during puberty in two separate experiments. Prepubertal gonadectomy (GDX) eliminated the changes, whereas SHAM gonadectomy had little impact. Therefore, gonadal hormones are likely to play a role in pubertal changes in chronotype in this rodent species. Using evidence from a variety of species, including our recent studies in the rat, we conclude that chronotype changes during puberty are a well-demonstrated phenomenon in mammals.
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The homeostatic drive to sleep changes during adolescence.
“This review specifically focuses on adolescent changes in the circadian timekeeping system, but there is growing evidence that the homeostatic drive to sleep also changes during adolescence (see recent reviews by Carskadon [27] and Hagenauer et al. [67]).”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [67]
The pubertal shift in rest/activity rhythms in rodents is similar to that in human adolescents.
“This meant that, overall, both rodent species showed a large (2-4) hr shift in the phasing of their rest/activity rhythms during pubertal development, similar to human adolescents (Figure 2C-D, [66-67, 75, 114, 185]).”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [67]
In degus, females did not seem to shift their activity rhythms at all during puberty, despite males showing large changes in chronotype.
“For degus, the sex difference was absolute: females did not seem to shift their activity rhythms at all during puberty, despite the fact that males showed large changes in chronotype [67].”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [67]
Gonadectomized animals either completely lacked a shift in chronotype during the normal pubertal period (degus) or showed a much diminished shift (rats).
“We found that gonadectomized animals either completely lacked a shift in chronotype during the normal pubertal period (degus: [67, 75]) or showed a much diminished shift in chronotype (rats: [66]).”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [67]
Both rodent species showed a large (2-4) hr shift in the phasing of their rest/activity rhythms during pubertal development.
“This meant that, overall, both rodent species showed a large (2-4) hr shift in the phasing of their rest/activity rhythms during pubertal development, similar to human adolescents (Figure 2C-D, [66-67, 75, 114, 185]).”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [67]
In the degu, there is a brief increase in activity levels during puberty that appears only to be related to gonadal hormones in females, and which then disappears as the animals mature, so the increase in activity level cannot explain the development of more consolidated, phase-advanced rest/activity rhythms during puberty.
“In the degu, there is a brief increase in activity levels during puberty that appears only to be related to gonadal hormones in females, and which then disappears as the animals mature [67], so the increase in activity level cannot explain the development of more consolidated, phase-advanced rest/activity rhythms during puberty.”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [67]
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Leung, S. (2014) · YorkSpace (York University) · Cited by 1 · see citing works
Identifikácia chronotypov vysokoškolských študentiek
Vančová, D., Jančoková, Ľ., Palovičová, J., & Pivovarniček, P. (2013) · Studia sportiva · doi:10.5817/sts2013-2-9
Effect of diurnal aerobic intervention on indicators of body composition of young women
Pivovarniček, P., Kondrátová, D., Jančoková, Ľ., Malý, T., Hank, M., Hráský, P., Malá, L., & Zahálka, F. (2019) · Biological Rhythm Research · doi:10.1080/09291016.2019.1586101
Women amateur street runners have a higher level of chronotype self- perception than men
de Carvalho, M. V., Guimarães, J. B., Bicalho, C. C. F., Machado, F. S. M., Lopes, B., & Coimbra, C. C. (2021) · Motriz Revista de Educação Física · doi:10.1590/s1980-65742021003621
Pivovarniček, P., Jančoková, Ľ., Vyšehradský, R., Hricko, L., Gavliakova, S., Sýkora, J., & Malý, T. (2023) · Chronobiology International · doi:10.1080/07420528.2023.2265473
- Authors
- Hagenauer, M. H., Ku, J. H., & Lee, T. M.
- Affiliations
- University of Michigan (US)
- Corresponding author
- Hagenauer, Megan Hastings
- Venue
- Hormones and Behavior
- Publisher
- Elsevier BV
- Published
- 2011-06
- Volume
- 60
- Issue
- 1
- Pages
- 37-45
- ISSN
- 0018-506X (ISSN-L)
- PMC
- PMC3112253
- OpenAlex
- W2039002237
- Cited by
- 41
- References
- 57
- Citations by year
- 2025: 3 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 4 · 2020: 2 · 2019: 4 · 2018: 2 · 2017: 1 · 2016: 2 · 2015: 4 · 2014: 2 · 2013: 6 · 2012: 3
- FWCI
- 1.88
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Hormones and Behavior (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Science Foundation
- University of Michigan
- National Heart, Lung, and Blood Institute (R01HL061667)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (T32HD007048)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Keywords
- chronotype, puberty, gonadal hormones, Octodon degus, circadian rhythm, activity rhythms, phase advance, sex differences, gonadectomy
- MeSH terms
- Animals, Circadian Rhythm, Female, Male, Orchiectomy, Running, Sex Factors, Sexual Maturation, Gonadal Hormones, Octodon, Sexual Development
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