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• W1979231444 abstract "Electroconvulsive therapy (ECT) is a potent therapy in severe treatment-refractory depression. Although commonly applied in psychiatric clinical routine since decades, the exact neurobiological mechanism regarding its efficacy remains unclear. Results from preclinical and clinical studies emphasize a crucial involvement of the serotonin-1A receptor (5-HT1A) in the mode of action of antidepressant treatment. This includes associations between treatment response and changes in 5-HT1A function and density by antidepressants. Further, alterations of the 5-HT1A receptor are consistently reported in depression. To elucidate the effect of ECT on 5-HT1A receptor binding, 12 subjects with severe treatment-resistant major depression underwent three positron emission tomography (PET) measurements using the highly selective radioligand [carbonyl-11C]WAY100635, twice before (test–retest variability) and once after 10.08±2.35 ECT sessions. Ten patients (∼83%) were responders to ECT. The voxel-wise comparison of the 5-HT1A receptor binding (BPND) before and after ECT revealed a widespread reduction in cortical and subcortical regions (P<0.05 corrected), except for the occipital cortex and the cerebellum. Strongest reductions were found in regions consistently reported to be altered in major depression and involved in emotion regulation, such as the subgenual part of the anterior cingulate cortex (−27.5%), the orbitofrontal cortex (−30.1%), the amygdala (−31.8%), the hippocampus (−30.6%) and the insula (−28.9%). No significant change was found in the raphe nuclei. There was no significant difference in receptor binding in any region comparing the first two PET scans conducted before ECT. This PET study proposes a global involvement of the postsynaptic 5-HT1A receptor binding in the effect of ECT." @default.
• W1979231444 created "2016-06-24" @default.
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• W1979231444 date "2012-07-03" @default.
• W1979231444 modified "2023-10-15" @default.
• W1979231444 title "Global decrease of serotonin-1A receptor binding after electroconvulsive therapy in major depression measured by PET" @default.
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• W1979231444 doi "https://doi.org/10.1038/mp.2012.93" @default.
• W1979231444 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3526726" @default.
• W1979231444 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22751491" @default.
• W1979231444 hasPublicationYear "2012" @default.
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