liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Acute effects on brain cholecystokinin-like concentration and anxiety-like behaviour in the female rat upon a single injection of 17β-estradiol
Linköping University, Department of Clinical and Experimental Medicine, Division of Cell Biology. Linköping University, Faculty of Health Sciences.
TNO Metabolic Health Research, Leiden, Netherlands.
Linköping University, Department of Clinical and Experimental Medicine, Division of Cell Biology. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Microbiology and Molecular Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Diagnostics, Department of Clinical Chemistry.
2014 (English)In: Pharmacology, Biochemistry and Behavior, ISSN 0091-3057, E-ISSN 1873-5177, Vol. 122, 222-227 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The neuropeptide cholecystokinin (CCK) has been implicated in the neurobiology of anxiety and panic disorders, as well as in dopamine-related behaviours. Anxiety and panic-disorders are twice as common in females compared to males, but studies of females are rare, although increasing in number. Limited studies have found that CCK fluctuates in limbic regions during the estrous cycle, and that CCK and its receptors are sensitive to estrogen.

AIM/PURPOSE: The aim of the present work was to study the acute effects of 17β-estradiol on anxiety-like behaviour and on CCK-like immunoreactivity (LI) in the female rat brain (amygdala, hippocampus, nucleus accumbens, and cingulate cortex).

METHODS: Four groups of female Sprague-Dawley rats were used: ovariectomized, ovariectomized+17β-estradiol-replacement, sham, and sham+17β-estradiol-replacement. The effect of 17β-estradiol-replacement on anxiety-related behaviour was measured in all animals on the elevated plus maze 2-24h after injection. CCK-LI concentration was measured in punch biopsies by means of radioimmunoassay.

RESULTS: 17β-estradiol decreased anxiety-like behaviour 2h after administration in ovariectomized and sham-operated animals, as demonstrated by increased exploration of the open arms compared to respective sesame oil-treated controls. This effect was not present when testing occurred 24h post-treatment. The rapid behavioural effect of 17β-estradiol was accompanied by changes in CCK-LI concentrations in regions of the limbic system including cingulate cortex, hippocampus, amygdala and nucleus accumbens.

CONCLUSION: Although the interpretation of these data requires caution since the data were collected from two different experiments, our results suggest that estrogen-induced anxiolytic effects may be associated with changes of the CCK-system in brain regions controlling anxiety-like behaviour.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 122, 222-227 p.
Keyword [en]
Anxiety, Cholecystokinin, Estrogen
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-106089DOI: 10.1016/j.pbb.2014.04.004ISI: 000338597000025PubMedID: 24732637OAI: diva2:713863
Available from: 2014-04-24 Created: 2014-04-24 Last updated: 2015-06-10Bibliographically approved

Open Access in DiVA

fulltext(1002 kB)54 downloads
File information
File name FULLTEXT01.pdfFile size 1002 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Holm, LovisaThorsell, AnnikaHilke, Susanne
By organisation
Division of Cell BiologyFaculty of Health SciencesDivision of Microbiology and Molecular MedicineDepartment of Clinical Chemistry
In the same journal
Pharmacology, Biochemistry and Behavior
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 54 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 91 hits
ReferencesLink to record
Permanent link

Direct link