Cited by 100Circadian rhythm and melatoninGrowth Hormone and Insulin-like Growth FactorsHypothalamic control of reproductive hormones

Gender differences in the temporal organization of proclactin (PRL) secretion: evidence for a sleep-independent circadian rhythm of circulating PRL levels- a clinical research center study.

Waldstreicher, J, Duffy, J F, Brown, E N, Rogacz, S, Allan, J S, Czeisler, C A·1996·The Journal of Clinical Endocrinology & Metabolism

Abstract

Although a nocturnal rise in PRL secretion is well known, it has long been presumed to be evoked by sleep. To determine whether PRL secretion was driven by a sleep-independent circadian rhythm, we studied 12 men and 10 women using a constant routine protocol. Under the constant routine conditions of continuous semirecumbent wakefulness in constant indoor room light with hourly meals distributed throughout the day and night, a persistent circadian rhythm of PRL secretion was present in men and in women at the follicular and luteal phases of the menstrual cycle. Furthermore, the amplitude of this rhythm in women was significantly greater than that in men. The present data demonstrate the presence of a robust sleep-independent endogenous circadian rhythm of PRL secretion in humans. We hypothesize that this endogenous component of the circadian rhythm of PRL secretion together with those of body temperature, urine production, and cortisol, TSH, and melatonin secretion are driven by the central circadian pacemaker located in the suprachiasmatic nucleus of the hypothalamus.

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Crossref · 10.1210/jcem.81.4.8636355

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32 of 32 references verified0 citation errors · 0 not checkable

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  • A circadian decrease in prolactin at these morning hours has been described in volunteers not treated with dexamethasone.

    “Una disminución circadiana de la prolactina a estas horas, similar a la observada en el grupo placebo de nuestro estudio, ha sido descrita en voluntarios no tratados con dexametasona 33,34 .”

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Authors
Waldstreicher, J., Duffy, J. F., Brown, E. N., Rogacz, S., Allan, J. S., & Czeisler, C. A.
Affiliations
Harvard University (US)
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
1996-04
Volume
81
Issue
4
Pages
1483-1487
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2051715639
Cited by
100
References
32
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 1 · 2021: 3 · 2019: 5 · 2018: 1 · 2017: 1 · 2016: 5 · 2015: 6 · 2014: 4 · 2013: 3 · 2012: 3
FWCI
0.91
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01hd020174-03)
  • National Institute on Aging (R01AG006072, R01-AG-06072)
  • National Center for Research Resources (GCRC-2-MO1-RR02635, M01RR002635)
  • NIH Clinical Center
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01-HD-20174)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
prolactin secretion, circadian rhythm, gender differences, menstrual cycle, follicular phase, luteal phase, suprachiasmatic nucleus, nocturnal prolactin surge
MeSH terms
Adult, Analysis of Variance, Body Temperature, Circadian Rhythm, Female, Follicular Phase, Humans, Hydrocortisone, Luteal Phase, Male, Melatonin, Menstrual Cycle, Prolactin, Sex Characteristics, Sleep, Suprachiasmatic Nucleus, Thyrotropin, Urine, Wakefulness

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