Foster mother rat entrains circadian adrenocortical rhythm in blinded pups
Abstract
Free-running patterns of blood corticosterone rhythm were examined between the fourth and eighth postnatal week in blinded pups optically enucleated on day 1. When blinded pups were raised by intact natural mothers, the peak time of corticosterone rhythm appeared near the time of light-dark (LD) transition, which was close to that of mothers, and then free-ran. This phase relation between mothers and pups showed that mothers entrained pups' corticosterone rhythm. When blinded pups born of LD (or DL) mothers were raised by DL (or LD) foster mothers, the corticosterone rhythm in blinded pups was close to that of foster mothers at 4 wk of age, indicating that a foster mother plays a predominant role in entraining the pups' rhythm. When blinded pups were raised by blinded mothers whose rhythm was out of phase of the lighting cycle, pups' rhythm was in phase with that of mothers, showing that lighting cycle did not affect the pups' rhythm. These facts indicate that the mother nursing pups acts as the most predominant entrainer of corticosterone rhythm of the blinded pups.
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The dam continues to serve as an effective zeitgeber until the 4th or 5th week of life (approximately P28-P35).
“Even after this point, the dam continues to serve as an effective zeitgeber until the 4th or 5th week of life (approximately P28–P35, [104, 184].”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [184]
Cites
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Maternal influences on the ontogeny of basal levels of plasma corticosterone in the rat
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The neuroendocrine control of the circadian system: Adolescent chronotype
Hagenauer, M. H., & Lee, T. M. (2012) · Frontiers in Neuroendocrinology · doi:10.1016/j.yfrne.2012.04.003 · Cited by 143 · see citing works
Maternal communication of circadian phase to the developing mammal
Reppert, S. (1988) · Psychoneuroendocrinology · doi:10.1016/0306-4530(88)90007-8 · Cited by 53 · see citing works
Sugishita, M., Takashima, M., Takeuchi, Y., Kato, Y., Yamauchi, T., & Takahashi, K. (1993) · Pharmacology Biochemistry and Behavior · doi:10.1016/0091-3057(93)90551-4 · Cited by 18 · see citing works
Self-citation
- Authors
- Takahashi, K., Hayafuji, C., & Murakami, N.
- ORCID
- Takahashi, K.
- Venue
- American Journal of Physiology-Endocrinology and Metabolism
- Publisher
- American Physiological Society
- Published
- 1982-12-01
- Volume
- 243
- Issue
- 6
- Pages
- E443-E449
- ISSN
- 0193-1849 (ISSN-L)
- 1522-1555
- OpenAlex
- W2412612545
- Cited by
- 31
- References
- 4
- Citations by year
- 2018: 1 · 2013: 1 · 2012: 1
- FWCI
- 1.19
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
- Keywords
- circadian entrainment, maternal care, blind rats, pup development, light-dark cycle, phase shift, obstetric nursing, free-running rhythm
- MeSH terms
- Adrenal Cortex, Aging, Animals, Behavior, Animal, Blindness, Circadian Rhythm, Corticosterone, Female, Male, Rats, Inbred Strains, Rats
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