Peripheral proteomic changes after electroconvulsive seizures in a rodent model of non-response to chronic fluoxetine.

{"sci_version": "1.2", "schema": "https://corpus.bntrg.co.uk/sci/1.0/sci.schema.json", "id": "pmid:36386166", "kind": "science-record", "revision": 5, "content_hash": "sha256:bf31488c6b5c5a2bd35ccf1bac273de4c99dddbe59d7c7ef736021b353b55a20", "created_at": "2026-11-01T18:15:49Z", "updated_at": "2026-11-01T22:50:35Z", "generator": {"name": "corpus-assay-engine", "run_id": "reading-sci-2026-11-01"}, "paper": {"state": "complete", "title": "Peripheral proteomic changes after electroconvulsive seizures in a rodent model of non-response to chronic fluoxetine.", "doi": "10.3389/fphar.2022.993449", "pmid": "36386166", "authors": ["Rodolphe H Lebeau", "Indira Mendez-David", "Laura Kucynski-Noyau", "Céline Henry", "David Attali", "Marion Plaze", "Romain Colle", "Emmanuelle Corruble", "Alain M Gardier", "Raphaël Gaillard", "Jean-Philippe Guilloux", "Denis J David"], "journal": "Frontiers in pharmacology", "year": 2022, "abstract": "Major depressive disorder (MDD) is the psychiatric disorder with the highest prevalence in the world. Pharmacological antidepressant treatment (AD), such as selective serotonin reuptake inhibitors [SSRI, i.e., fluoxetine (Flx)] is the first line of treatment for MDD. Despite its efficacy, lack of AD response occurs in numerous patients characterizing Difficult-to-treat Depression. ElectroConvulsive Therapy (ECT) is a highly effective treatment inducing rapid improvement in depressive symptoms and high remission rates of ∼50-63% in patients with pharmaco-resistant depression. Nevertheless, the need to develop reliable treatment response predictors to guide personalized AD strategies and supplement clinical observation is becoming a pressing clinical objective. Here, we propose to establish a proteomic peripheral biomarkers signature of ECT response in an anxio/depressive animal model of non-response to AD. Using an emotionality score based on the analysis complementary behavioral tests of anxiety/depression (Elevated Plus Maze, Novelty Suppressed Feeding, Splash Test), we showed that a 4-week corticosterone treatment (35 μg/ml, Cort model) in C57BL/6JRj male mice induced an anxiety/depressive-like behavior. A 28-day chronic fluoxetine treatment (Flx, 18 mg/kg/day) reduced corticosterone-induced increase in emotional behavior. A 50% decrease in emotionality score threshold before and after Flx, was used to separate Flx-responding mice (Flx-R, n = 18), or Flx non-responder mice (Flx-NR, n = 7). Then, Flx-NR mice received seven sessions of electroconvulsive seizure (ECS, equivalent to ECT in humans) and blood was collected before and after ECS treatment. Chronic ECS normalized the elevated emotionality observed in Flx-NR mice. Then, proteins were extracted from peripheral blood mononuclear cells (PBMCs) and isolated for proteomic analysis using a high-resolution MS Orbitrap. Data are available via ProteomeXchange with identifier PXD037392. The proteomic analysis revealed a signature of 33 peripheral proteins associated with response to ECS (7 down and 26 upregulated). These proteins were previously associated with mental disorders and involved in regulating pathways which participate to the depressive disorder etiology.", "claims": [{"id": "claim-method", "statement": "A generalized linear mixed model (GLM) with a Poisson distribution was applied. This model suits in the case of a counting like SC.", "kind": "methodological", "target": null, "evidence": [{"asset": "source:pmid:36386166", "locator": "sections[19] \"2.8.2 Data processing and bioinformatics analysis\" paragraph 2", "quote": "A generalized linear mixed model (GLM) with a Poisson distribution was applied. 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All mice were 7–8 weeks old, weighed 23–25 g at the beginn", "on a 12L:12 D schedule (lights on at 06:00). Mice were housed in groups of five. Food and water wer", "d anxiety and depression-like phenotype in a mouse model of anxiety/depression. (A) Timeline of exper"], "order_basis": "paper_text_order:2388", "id": "assay:1"}, {"role": "analysis", "definition_id": "group_comparison", "definition_version": "f2132e96ae6c7a4e", "definition_digest": null, "required_operations": ["group_summary", "welch_t", "bootstrap_mean_difference", "group_comparison_anova"], "support_state": "supported", "source_hashes": {"dsl_catalogue": "f2132e96ae6c7a4e"}, "confidence": 1.0, "evidence": ["A generalized linear mixed model (GLM) with a Poisson distribution was applied. This model suits in the case of a counting like SC."], "order_basis": "consumes_earlier_output", "id": "assay:2"}]}