Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression

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Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression. / Lillethorup, Thea P; Iversen, Peter; Fontain, Jesper; Wegener, Gregers; Doudet, Doris J; Landau, Anne M.

In: European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology, 03.2015, p. 404-412.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Lillethorup, TP, Iversen, P, Fontain, J, Wegener, G, Doudet, DJ & Landau, AM 2015, 'Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression', European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology, pp. 404-412. https://doi.org/10.1016/j.euroneuro.2014.12.003

APA

Lillethorup, T. P., Iversen, P., Fontain, J., Wegener, G., Doudet, D. J., & Landau, A. M. (2015). Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression. European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology, 404-412. https://doi.org/10.1016/j.euroneuro.2014.12.003

CBE

Lillethorup TP, Iversen P, Fontain J, Wegener G, Doudet DJ, Landau AM. 2015. Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression. European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology. 404-412. https://doi.org/10.1016/j.euroneuro.2014.12.003

MLA

Lillethorup, Thea P et al. "Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression". European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology. 2015, 404-412. https://doi.org/10.1016/j.euroneuro.2014.12.003

Vancouver

Lillethorup TP, Iversen P, Fontain J, Wegener G, Doudet DJ, Landau AM. Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression. European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology. 2015 Mar;404-412. https://doi.org/10.1016/j.euroneuro.2014.12.003

Author

Lillethorup, Thea P ; Iversen, Peter ; Fontain, Jesper ; Wegener, Gregers ; Doudet, Doris J ; Landau, Anne M. / Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression. In: European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology. 2015 ; pp. 404-412.

Bibtex

@article{37c07b9c278d46a3a890e904fd145e38,
title = "Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression",
abstract = "Despite years of drug development, electroconvulsive therapy (ECT) remains the most effective treatment for severe depression. The exact therapeutic mechanism of action of ECT is still unresolved and therefore we tested the hypothesis that the beneficial effect of ECT could in part be the result of increased noradrenergic neurotransmission leading to a decrease in α2-adrenoceptor binding. We have previously shown that both the Flinders sensitive line (FSL) and Flinders resistant line (FRL) rats had altered α2-adrenoceptor binding compared to control Sprague-Dawley (SD) rats. In this study, we treated female FSL, FRL and SD rats with electroconvulsive shock (ECS), an animal model of ECT, or sham stimulation for 10 days before brains were removed and cut into 20µm thick sections. Densities of α2-adrenoceptors were measured by quantitative autoradiography in the hippocampus, thalamic nucleus, hypothalamus, amygdala, frontal cortex, insular cortex, and perirhinal cortex using the α2-adrenoceptor antagonist, [(3)H]RX 821002. ECS decreased the binding of α2-adrenoceptors in cortical regions in the FSL and cortical and amygdaloid regions in the control FRL rats compared to their respective sham treated group. The normal SD controls showed no significant response to ECS treatment. Our data suggest that the therapeutic effect of ECS may be mediated through a decrease of α2-adrenoceptors, probably due to a sustained increase in noradrenaline release. These data confirm the importance of the noradrenergic system and the α2-adrenoceptor in depression and in the mechanism of antidepressant treatments.",
author = "Lillethorup, {Thea P} and Peter Iversen and Jesper Fontain and Gregers Wegener and Doudet, {Doris J} and Landau, {Anne M.}",
note = "Copyright {\circledC} 2014 Elsevier B.V. and ECNP. All rights reserved.",
year = "2015",
month = "3",
doi = "10.1016/j.euroneuro.2014.12.003",
language = "English",
pages = "404--412",
journal = "European Neuropsychopharmacology",
issn = "0924-977X",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Electroconvulsive shocks decrease α2-adrenoceptor binding in the Flinders rat model of depression

AU - Lillethorup, Thea P

AU - Iversen, Peter

AU - Fontain, Jesper

AU - Wegener, Gregers

AU - Doudet, Doris J

AU - Landau, Anne M.

N1 - Copyright © 2014 Elsevier B.V. and ECNP. All rights reserved.

PY - 2015/3

Y1 - 2015/3

N2 - Despite years of drug development, electroconvulsive therapy (ECT) remains the most effective treatment for severe depression. The exact therapeutic mechanism of action of ECT is still unresolved and therefore we tested the hypothesis that the beneficial effect of ECT could in part be the result of increased noradrenergic neurotransmission leading to a decrease in α2-adrenoceptor binding. We have previously shown that both the Flinders sensitive line (FSL) and Flinders resistant line (FRL) rats had altered α2-adrenoceptor binding compared to control Sprague-Dawley (SD) rats. In this study, we treated female FSL, FRL and SD rats with electroconvulsive shock (ECS), an animal model of ECT, or sham stimulation for 10 days before brains were removed and cut into 20µm thick sections. Densities of α2-adrenoceptors were measured by quantitative autoradiography in the hippocampus, thalamic nucleus, hypothalamus, amygdala, frontal cortex, insular cortex, and perirhinal cortex using the α2-adrenoceptor antagonist, [(3)H]RX 821002. ECS decreased the binding of α2-adrenoceptors in cortical regions in the FSL and cortical and amygdaloid regions in the control FRL rats compared to their respective sham treated group. The normal SD controls showed no significant response to ECS treatment. Our data suggest that the therapeutic effect of ECS may be mediated through a decrease of α2-adrenoceptors, probably due to a sustained increase in noradrenaline release. These data confirm the importance of the noradrenergic system and the α2-adrenoceptor in depression and in the mechanism of antidepressant treatments.

AB - Despite years of drug development, electroconvulsive therapy (ECT) remains the most effective treatment for severe depression. The exact therapeutic mechanism of action of ECT is still unresolved and therefore we tested the hypothesis that the beneficial effect of ECT could in part be the result of increased noradrenergic neurotransmission leading to a decrease in α2-adrenoceptor binding. We have previously shown that both the Flinders sensitive line (FSL) and Flinders resistant line (FRL) rats had altered α2-adrenoceptor binding compared to control Sprague-Dawley (SD) rats. In this study, we treated female FSL, FRL and SD rats with electroconvulsive shock (ECS), an animal model of ECT, or sham stimulation for 10 days before brains were removed and cut into 20µm thick sections. Densities of α2-adrenoceptors were measured by quantitative autoradiography in the hippocampus, thalamic nucleus, hypothalamus, amygdala, frontal cortex, insular cortex, and perirhinal cortex using the α2-adrenoceptor antagonist, [(3)H]RX 821002. ECS decreased the binding of α2-adrenoceptors in cortical regions in the FSL and cortical and amygdaloid regions in the control FRL rats compared to their respective sham treated group. The normal SD controls showed no significant response to ECS treatment. Our data suggest that the therapeutic effect of ECS may be mediated through a decrease of α2-adrenoceptors, probably due to a sustained increase in noradrenaline release. These data confirm the importance of the noradrenergic system and the α2-adrenoceptor in depression and in the mechanism of antidepressant treatments.

U2 - 10.1016/j.euroneuro.2014.12.003

DO - 10.1016/j.euroneuro.2014.12.003

M3 - Journal article

C2 - 25604421

SP - 404

EP - 412

JO - European Neuropsychopharmacology

JF - European Neuropsychopharmacology

SN - 0924-977X

ER -