Cited by 1,853Circadian rhythm and melatoninSleep and Wakefulness ResearchHypothalamic control of reproductive hormones

Transplanted Suprachiasmatic Nucleus Determines Circadian Period

Ralph, Martin R., Foster, Russell G., Davis, Fred C., Menaker, Michael·1990·Science

Abstract

The pacemaker role of the suprachiasmatic nucleus in a mammalian circadian system was tested by neural transplantation by using a mutant strain of hamster that shows a short circadian period. Small neural grafts from the suprachiasmatic region restored circadian rhythms to arrhythmic animals whose own nucleus had been ablated. The restored rhythms always exhibited the period of the donor genotype regardless of the direction of the transplant or genotype of the host. The basic period of the overt circadian rhythm therefore is determined by cells of the suprachiasmatic region.

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Crossref · 10.1126/science.2305266

Cites

24 of 24 references verified0 citation errors · 0 not checkable

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  • In rodents, lesions of the suprachiasmatic nucleus abolish or attenuate daily rhythms in locomotor activity, body temperature, blood pressure, and heart rate, showing that these rhythms are endogenous rather than resulting from daily changes in behavior or environment.

    “In rodents, lesions of the SCN abolish or attenuate daily rhythms in locomotor activity, body temperature, BP, and HR (22)(23)(24), showing that these rhythms are endogenous rather than resulting from daily changes in behavior or environment.”

    From Role of the circadian system in cardiovascular disease (2018) · cites this paper as [22]

  • Fetal SCN tissue transplanted into the hypothalamus of SCN-lesioned animals restores behavioral rhythms, and the circadian period of the recipient is determined by the donor animal rather than the host.

    “Not only did these transplants restore behavioral rhythms, but the circadian period of the recipient also was determined by the period of the donor animal and not the previous period of the host (7).”

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Authors
Ralph, M. R., Foster, R. G., Davis, F. C., & Menaker, M.
Affiliations
  • University of Virginia (US)
  • Department of Biology, University of Virginia, Charlottesville, VA 22903.
  • Northeastern University (US)
Venue
Science
Published
1990-02-23
Volume
247
Issue
4945
Pages
975-978
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2046577583
Cited by
1,853
References
24
Citations by year
2026: 30 · 2025: 36 · 2024: 60 · 2023: 43 · 2022: 65 · 2021: 54 · 2020: 51 · 2019: 60 · 2018: 69 · 2017: 65 · 2016: 61 · 2015: 66 · 2014: 70 · 2013: 71 · 2012: 65
FWCI
34.69
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5f32mh009483-03, 5r01hd013162-16)
  • National Institute of Mental Health (MH09483)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD 18686, HD-13162)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
suprachiasmatic nucleus, circadian period, circadian pacemaker, neural transplantation, neural grafts, circadian rhythm
MeSH terms
Animals, Circadian Rhythm, Cricetinae, Immunohistochemistry, Male, Mutation, Nerve Tissue, Neuropeptide Y, Suprachiasmatic Nucleus, Vasopressins

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