Cited by 35Circadian rhythm and melatoninHypothalamic control of reproductive hormonesNeuroendocrine regulation and behavior

Vasopressin regulates daily rhythms and circadian clock circuits in a manner influenced by sex

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Rohr, Kayla E., Telega, Adam, Savaglio, Alexandra, Evans, Jennifer A.·2021·Hormones and Behavior

Abstract

Arginine vasopressin (AVP) is a neurohormone that alters cellular physiology through both endocrine and synaptic signaling. Circadian rhythms in AVP release and other biological processes are driven by the suprachiasmatic nucleus (SCN) of the anterior hypothalamus. Loss of vasopressin signaling alters circadian behavior, but the basis of these effects remains unclear. Here we investigate the role of AVP signaling in circadian timekeeping by analyzing behavior and SCN function in a novel AVP-deficient mouse model. Consistent with previous work, loss of AVP signaling increases water consumption and accelerates recovery to simulated jetlag. We expand on these results to show that loss of AVP increases period, imprecision and plasticity of behavioral rhythms under constant darkness. Interestingly, the effect of AVP deficiency on circadian period was influenced by sex, with loss of AVP lengthening period in females but not males. Examining SCN function directly with ex vivo bioluminescence imaging of clock protein expression, we demonstrate that loss of AVP signaling modulates the period, precision, and phase relationships of SCN neurons in both sexes. This pattern of results suggests that there are likely sex differences in downstream targets of the SCN. Collectively, this work indicates that AVP signaling modulates circadian circuits in a manner influenced by sex, which provides new insight into sexual dimorphisms in the regulation of daily rhythms.

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Crossref · 10.1016/j.yhbeh.2020.104888

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  • Vasopressin is also produced in the suprachiasmatic nucleus, which regulates circadian rhythms, and in the accessory nuclei/nucleus circularis region, a likely source of vasopressin regulating aggression and competitive communication.

    “AVP is also produced in other hypothalamic nuclei such as the suprachiasmatic nucleus, well known for regulating circadian rhythms (42), and the accessory nuclei/nucleus circularis region, a likely source of AVP regulating aggression and competitive communication (43).”

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Authors
Rohr, K. E., Telega, A., Savaglio, A., & Evans, J. A.
Affiliations
Marquette University (US)
Corresponding author
Evans, Jennifer A.
Venue
Hormones and Behavior
Publisher
Elsevier BV
Published
2021-01
Volume
127
Pages
104888
ISSN
0018-506X (ISSN-L)
OpenAlex
W3102134631
Cited by
35
References
55
Citations by year
2026: 9 · 2025: 7 · 2024: 2 · 2023: 6 · 2022: 7 · 2021: 4
FWCI
2.18
Type
journal article
Language
en
Open access
Locations
  • Hormones and Behavior (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • e-Publications@Marquette (Marquette University) (submittedVersion)
Funders
  • Whitehall Foundation
  • National Institutes of Health
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
vasopressin, circadian clock, suprachiasmatic nucleus, sex differences, circadian period, water consumption, circadian phase, daily rhythms
MeSH terms
Animals, Arginine Vasopressin, Circadian Rhythm, Female, Male, Mice, Inbred C57BL, Mice, Transgenic, Nerve Net, Sex Characteristics, Suprachiasmatic Nucleus, Signal Transduction, Mice, CLOCK Proteins, Circadian Clocks

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