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von Wolff, G.* ; Avrabos, C.* ; Stepan, J.* ; Wurst, W. ; Deussing, J.M.* ; Holsboer, F.* ; Eder, M.*

Voltage-sensitive dye imaging demonstrates an enhancing effect of corticotropin-releasing hormone on neuronal activity propagation through the hippocampal formation.

J. Psychiatr. Res. 45, 256-261 (2011)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Corticotropin-releasing hormone (CRH) is thought to play an important role in the pathophysiology of stress-related psychiatric disorders, such as major depressive disorder (MDD) and post-traumatic stress disorder (PTSD). However, knowledge about the actions of CRH at the neuronal network level is only scarce. Here, we examined whether CRH affects neuronal activity propagation through the hippocampal formation (HF), a brain region which is likely to be involved in MDD and PTSD. For this purpose, we applied voltage-sensitive dye imaging (VSDI) to specifically cut hippocampal brain slices obtained from adult mice. This approach allowed us to investigate evoked neuronal activity propagation through the HF with micrometer spatial and millisecond temporal resolution. Application of CRH (50 nM) to slices increased neuronal activity propagation from the dentate gyrus (DG) to the CA1 subfield. This effect of CRH was caused by amplification of neuronal excitation on its passage through the HF and absent in mice lacking the CRH receptor type 1 (CRHR1). In conclusion, our study presents a VSDI assay for the investigation of neuronal activity propagation through the HF and demonstrates that CRH, via CRHR1, enhances this activity propagation. This effect of CRH might contribute to alterations of memory formation seen in MDD and PTSD. Moreover, it could influence hippocampal regulation of hypothalamic-pituitary-adrenal axis (HPA-axis) activity.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Corticotropin-releasing hormone (CRH); Stress; Psychiatric disorders; Hippocampus; Voltage-sensitive dye imaging (VSDI); Neuronal network activity
Sprache englisch
Veröffentlichungsjahr 2011
Prepublished im Jahr 2010
HGF-Berichtsjahr 2010
ISSN (print) / ISBN 0022-3956
e-ISSN 1879-1379
Quellenangaben Band: 45, Heft: 2, Seiten: 256-261 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed
POF Topic(s) 30204 - Cell Programming and Repair
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er) Genetics and Epidemiology
PSP-Element(e) G-500500-001
G-520600-001
PubMed ID 20619419
Scopus ID 78650679000
Erfassungsdatum 2010-10-07