Cited by 87Stress Responses and CortisolAdrenal Hormones and DisordersNeuropeptides and Animal Physiology

Impaired Basal and Restraint-Induced Epinephrine Secretion in Corticotropin-Releasing Hormone- Deficient Mice1

Jeong, Kyeong-Hoon, Jacobson, Lauren, Pacák, Karel, Widmaier, Eric P., Goldstein, David S., Majzoub, Joseph A.·2000·Endocrinology

Abstract

CRH is thought to play a role in responses of the adrenocortical and adrenomedullary systems during stress. To investigate the role of CRH in stress-induced secretions of corticosterone and epinephrine, we subjected wild-type (WT) and CRH-deficient (knockout, KO) mice to restraint, and analyzed plasma corticosterone, plasma catecholamines, and adrenal phenylethanolamine N-methyltransferase (PNMT) gene expression and activity before and during 3 h of restraint. Plasma corticosterone increased over 40-fold in WT mice, but minimally in CRH KO mice. Adrenal corticosterone content tended to increase in CRH KO mice, although to levels 5-fold lower than that in WT mice. CRH KO mice had significantly lower plasma epinephrine and higher norepinephrine than WT mice at baseline, and delayed epinephrine secretion during restraint. Adrenal PNMT messenger RNA content in CRH KO mice tended to be lower than that in WT mice, though the degree of induction was similar in both genotypes. PNMT enzyme activity was significantly lower in CRH KO mice. Pharmacological adrenalectomy abolished restraint-induced corticosterone secretion and PNMT gene expression in WT mice, consistent with an absolute requirement of glucocorticoids for PNMT gene expression. We conclude that glucocorticoid insufficiency in CRH KO mice leads to decreased basal and restraint-induced plasma epinephrine and adrenal PNMT gene expression and enzyme activity.

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Crossref · 10.1210/endo.141.3.7370

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Authors
Jeong, K.-H., Jacobson, L., Pacák, K., Widmaier, E. P., Goldstein, D. S., & Majzoub, J. A.
Affiliations
  • Harvard University (US)
  • National Institutes of Health (US)
  • Boston University (US)
Corresponding author
Majzoub, Joseph A.
Venue
Endocrinology
Published
2000-03
Volume
141
Issue
3
Pages
1142-1150
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W1974684692
Cited by
87
References
57
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 5 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 7 · 2015: 3 · 2013: 7 · 2012: 1
FWCI
1.94
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r29dk049333-03, 5r01dk050511-06)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK49333, R01 DK50511)
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
corticotropin-releasing factor, epinephrine secretion, norepinephrine, corticosterone, restraint stress, phenylethanolamine N-methyltransferase, glucocorticoid insufficiency, adrenalectomy, stress response, catecholamines
MeSH terms
Adrenalectomy, Animals, Corticosterone, Corticotropin-Releasing Hormone, Epinephrine, Glucocorticoids, Male, Mice, Inbred C57BL, Restraint, Physical, RNA, Messenger, Stress, Psychological, Tyrosine 3-Monooxygenase, In Situ Hybridization, Mice, Knockout, Reverse Transcriptase Polymerase Chain Reaction, Mice

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