Horm Metab Res 2014; 46(03): 211-218
DOI: 10.1055/s-0033-1363958
Endocrine Care
© Georg Thieme Verlag KG Stuttgart · New York

Circulating and Urinary Adrenal Corticosterone, Progesterone, and Estradiol in Response to Acute Stress in Female Mice (Mus musculus)

J. B. Thorpe
1   Department of Psychology, Neuroscience & Behaviour, McMaster University Hamilton, Ontario, Canada
,
K. E. Gould
1   Department of Psychology, Neuroscience & Behaviour, McMaster University Hamilton, Ontario, Canada
,
E. D. Borman
1   Department of Psychology, Neuroscience & Behaviour, McMaster University Hamilton, Ontario, Canada
,
D. deCatanzaro
1   Department of Psychology, Neuroscience & Behaviour, McMaster University Hamilton, Ontario, Canada
› Author Affiliations
Further Information

Publication History

received 19 July 2013

accepted 10 December 2013

Publication Date:
20 January 2014 (online)

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Abstract

In studies of stress, it can be difficult to obtain blood rapidly enough to avoid confounding steroid measures. Noninvasive urinary steroid measures may provide an alternative insofar as they reflect systemic steroids. In Experiment 1, we profiled urinary corticosterone, progesterone, and estradiol in ovariectomized female mice following 1 h on an elevated platform. This increased urinary corticosterone for 3 h and progesterone for 4 h. In Experiment 2, blood and urine samples were obtained at 0–6 h following stressor offset. Females showed increased serum corticosterone and progesterone immediately after stressor offset. Urinary corticosterone was increased at both 0 and 2 h post-stress, while an increase in progesterone 2–6 h after stressor offset was not significant. Estradiol was not influenced by this mild stressor. In Experiment 3, mice were exposed to a more severe 1 h stressor, a rat across a wire-mesh grid. In serum, both corticosterone and progesterone were elevated immediately after stressor offset and returned to baseline within 2 h. In urine, this severe stressor elevated corticosterone immediately and 2 h after stressor offset, and in progesterone 2 h after stressor offset. Estradiol in serum was not dynamic, but it was significantly elevated in urine 4 h after stressor offset. Urinary measures generally reflected systemic measures; however, with a different time course resulting in a longer return to baseline. We suggest that the relative value of serum or urinary steroid measures in mice depends upon the experimental design, and that estradiol may only respond when the stressor is severe.