Cited by 283Stress Responses and CortisolAdrenal Hormones and DisordersNeuropeptides and Animal Physiology

The neurosteroid tetrahydroprogesterone attenuates the endocrine response to stress and exerts glucocorticoid-like effects on vasopressin gene transcription in the rat hypothalamus

Patchev, V·1996·Neuropsychopharmacology

Abstract

The neurosteroid tetrahydroprogesterone (5 alpha-pregnan-3 alpha-ol-20-one, allopregnanolone, THP), has been previously shown to counteract the anxiogenic effects of corticotropin-releasing hormone (CRH) and to interfere with noradrenergic and corticosteroid-mediated regulation of CRH release and gene transcription. Those observations indicated that, besides its sedative and analgesic activity, THP may also affect the neuroendocrine response to stress in a mode resembling that of corticosteroids. To examine this possibility, we compared the ability of THP, its precursor progesterone (P4), and the glucocorticoids dexamethasone (DEX) and corticosterone (CORT) to influence the pituitary-adrenal response to acute emotional stress and the adrenalectomy-induced increase in the gene transcription of the stress-related peptide arginine vasopressin (AVP) and of corticosteroid receptors (MR and GR) in the brain. Pretreatment of rats with a single dose of THP or P4 (50 micrograms/kg) significantly attenuated the elevation of plasma adrenocorticotropin (ACTH) and serum corticosterone after emotional stress; both steroids were, however, less potent than a similar dose of DEX. Administration of 1 mg of THP, CORT, or P4 to adrenalectomized (ADX) rats attenuated the increase in AVP mRNA levels in the ventromedial subdivision of the hypothalamic paraventricular nucleus (PVN), as compared with vehicle-treated ADX rats. However, whereas CORT and P4 influenced the ADX-induced increase in the transcription of both types of corticosteroid receptors in the hippocampus, these were unaffected by THP. In contrast to the glucocorticoids, THP and P4 failed to decrease plasma ACTH levels in rats deprived of endogenous steroids. These results demonstrate that the neurosteroid THP and its precursor P4 resemble glucocorticoids in their suppression of the pituitary-adrenal response to emotional stress; however, THP influences the transcription of glucocorticoid-responsive genes in brain structures involved in the regulation of the hypothalamo-pituitary-adrenal system in a fashion that is quite distinct from that obtained with glucocorticoids.

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Crossref · 10.1016/s0893-133x(96)00096-6

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Authors
Patchev, V
Affiliations
Max Planck Institute of Psychiatry (DE)
Corresponding author
Patchev, V
Venue
Neuropsychopharmacology
Published
1996-12
Volume
15
Issue
6
Pages
533-540
ISSN
0893-133X (ISSN-L)
OpenAlex
W2072990514
Cited by
283
References
0
Citations by year
2026: 3 · 2025: 4 · 2024: 10 · 2023: 5 · 2022: 5 · 2021: 9 · 2020: 8 · 2019: 11 · 2018: 10 · 2017: 3 · 2016: 10 · 2015: 6 · 2014: 16 · 2013: 12 · 2012: 11
FWCI
3.47
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • Max-Planck-Gesellschaft
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
tetrahydroprogesterone, allopregnanolone, neurosteroids, progesterone, pituitary-adrenal response, emotional stress, vasopressin, paraventricular nucleus, corticosteroid receptors, mineralocorticoid receptor, glucocorticoid receptor, ACTH, corticosterone, dexamethasone, adrenalectomy, hypothalamus
MeSH terms
Adrenocorticotropic Hormone, Animals, Anti-Inflammatory Agents, Arginine Vasopressin, Corticosterone, Dexamethasone, Glucocorticoids, Hypothalamus, Male, Pregnanolone, Progesterone, Receptors, Steroid, Stress, Psychological, Anti-Anxiety Agents, Transcription, Genetic, Rats, Wistar, Neuroprotective Agents, Rats

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