Cited by 205Cannabis and Cannabinoid ResearchStress Responses and CortisolNeuropeptides and Animal Physiology

Requirement of Cannabinoid Receptor Type 1 for the Basal Modulation of Hypothalamic-Pituitary-Adrenal Axis Function

Cota, Daniela, Steiner, Michel-Alexander, Marsicano, Giovanni, Cervino, Cristina, Herman, James P., Grübler, Yvonne, Stalla, Johanna, Pasquali, Renato +3 more·2007·Endocrinology

Abstract

The endocannabinoid system affects the neuroendocrine regulation of hormone secretion, including the activity of the hypothalamus-pituitary-adrenal (HPA) axis. However, the mechanisms by which endocannabinoids regulate HPA axis function have remained unclear. Here we demonstrate that mice lacking cannabinoid receptor type 1 (CB1−/−) display a significant dysregulation of the HPA axis. Although circadian HPA axis responsiveness is preserved, CB1−/− mice are characterized by an enhanced circadian drive on the HPA axis, resulting in elevated plasma corticosterone concentrations at the onset of the dark as compared with wild-type (CB1+/+) littermates. Moreover, CB1−/−-derived pituitary cells respond with a significantly higher ACTH secretion to CRH and forskolin challenges as compared with pituitary cells derived from CB1+/+ mice. Both CBL−/− and CB1+/+ mice properly respond to a high-dose dexamethasone test, but response to low-dose dexamethasone is influenced by genotype. In addition, CB1−/− mice show increased CRH mRNA levels in the paraventricular nucleus of the hypothalamus but not in other extrahypothalamic areas, such as the amygdala and piriform cortex, in which CB1 and CRH mRNA have been colocalized. Finally, CB1−/− mice have selective glucocorticoid receptor mRNA down-regulation in the CA1 region of the hippocampus but not in the dentate gyrus or paraventricular nucleus. Conversely, mineralocorticoid receptor mRNA expression levels were found unchanged in these brain areas. In conclusion, our findings indicate that CB1 deficiency enhances the circadian HPA axis activity peak and leads to central impairment of glucocorticoid feedback, thus further outlining the essential role of the endocannabinoid system in the modulation of neuroendocrine functions.

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Crossref · 10.1210/en.2005-1649

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Authors
Cota, D., Steiner, M.-A., Marsicano, G., Cervino, C., Herman, J. P., Grübler, Y., Stalla, J., Pasquali, R., Lutz, B., Stalla, G. K., & Pagotto, U.
Affiliations
  • Max Planck Institute of Psychiatry (DE)
  • Johannes Gutenberg University Mainz (DE)
  • IRCCS Azienda Ospedliero-Universitaria di Bologna Policlinico di Sant'Orsola (IT)
  • University of Cincinnati Medical Center (US)
Corresponding author
Pagotto, Uberto
Venue
Endocrinology
Published
2007-04-01
Volume
148
Issue
4
Pages
1574-1581
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2016871471
Cited by
205
References
49
Citations by year
2026: 4 · 2025: 4 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 5 · 2020: 7 · 2019: 4 · 2018: 11 · 2017: 11 · 2016: 9 · 2015: 17 · 2014: 19 · 2013: 15 · 2012: 7
FWCI
10.15
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
cannabinoid receptor type 1, CB1 knockout mice, hypothalamic-pituitary-adrenal axis, endocannabinoid system, circadian rhythm, corticosterone, ACTH secretion, corticotropin-releasing factor, paraventricular nucleus, glucocorticoid receptor, glucocorticoid negative feedback, dexamethasone suppression test, pituitary cells, hippocampal CA1
MeSH terms
Adrenocorticotropic Hormone, Animals, Circadian Rhythm, Corticotropin-Releasing Hormone, Female, Hippocampus, Hypothalamo-Hypophyseal System, Mice, Inbred C57BL, Pituitary-Adrenal System, RNA, Messenger, Growth Hormone, Mice, Knockout, Receptor, Cannabinoid, CB1, Mice

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