Cited by 93Neuroendocrine regulation and behaviorElectrolyte and hormonal disordersCircadian rhythm and melatonin

Daily patterns of secretion of neurohypophysial hormones in man: effect of age

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Forsling, ML, Montgomery, H, Halpin, D, Windle, RJ, Treacher, DF·1998·Experimental Physiology

Abstract

The neurohypophysial hormone vasopressin contributes to control of urine output and, while urine flow shows a clear daily rhythm, there has been debate as to whether this is true of neurohypophysial hormones. A study was performed on fifteen adult males, with a mean age of 25 years, over a 24 h period, nine blood samples being taken at regular intervals for the determination of neurohypophysial hormones and indices of fluid balance. Samples were taken via an indwelling cannula so that sleep was undisturbed. A daily variation in the plasma concentrations of oxytocin and vasopressin was demonstrated with concentrations reaching a nadir in the late afternoon. Concentrations of both hormones peaked at 02.00 h. Vasopressin concentrations were inversely correlated with packed cell volume, indicating that the altered hormone release was affecting fluid retention. Consistent with this was the observation that the relationship of plasma osmolality to vasopressin depended on the time of day. To determine the effect of ageing, a similar study was performed on nine healthy elderly subjects with a mean age of 70 years. The nocturnal peak of vasopressin was markedly attenuated, while oxytocin release was similar to that in the younger group. These observations confirm the existence of a daily rhythm in the plasma concentrations of neurohypophysial hormones and indicate that the amplitude of the vasopressin change decreases with age.

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Crossref · 10.1113/expphysiol.1998.sp004124

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Authors
Forsling, M., Montgomery, H., Halpin, D., Windle, R., & Treacher, D.
Venue
Experimental Physiology
Publisher
Wiley
Published
1998-05
Volume
83
Issue
3
Pages
409-418
ISSN
  • 0958-0670 (ISSN-L)
  • 1469-445X
OpenAlex
W2128580090
Cited by
93
References
9
Citations by year
2026: 3 · 2025: 6 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 5 · 2019: 3 · 2018: 5 · 2017: 8 · 2016: 8 · 2015: 6 · 2014: 4 · 2013: 5 · 2012: 5
FWCI
4.18
Type
journal article
Language
en
Open access
Locations
  • Experimental Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
Wellcome Trust
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Electrolyte and hormonal disorders
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Keywords
vasopressin, oxytocin, neurohypophyseal hormones, circadian rhythm, diurnal variation, aging, plasma osmolality, fluid balance, fluid retention, hematocrit, older men
MeSH terms
Adult, Aged, Aging, Body Fluids, Circadian Rhythm, Humans, Male, Middle Aged, Osmolar Concentration, Pituitary Hormones, Posterior

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