1
|
Salvetat N, Checa-Robles FJ, Delacrétaz A, Cayzac C, Dubuc B, Vetter D, Dainat J, Lang JP, Gamma F, Weissmann D. AI algorithm combined with RNA editing-based blood biomarkers to discriminate bipolar from major depressive disorders in an external validation multicentric cohort. J Affect Disord 2024; 356:385-393. [PMID: 38615844 DOI: 10.1016/j.jad.2024.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/16/2024]
Abstract
Bipolar disorder (BD) is a leading cause of disability worldwide, as it can lead to cognitive and functional impairment and premature mortality. The first episode of BD is usually a depressive episode and is often misdiagnosed as major depressive disorder (MDD). Growing evidence indicates that peripheral immune activation and inflammation are involved in the pathophysiology of BD and MDD. Recently, by developing a panel of RNA editing-based blood biomarkers able to discriminate MDD from depressive BD, we have provided clinicians a new tool to reduce the misdiagnosis delay observed in patients suffering from BD. The present study aimed at validating the diagnostic value of this panel in an external independent multicentric Switzerland-based cohort of 143 patients suffering from moderate to major depression. The RNA-editing based blood biomarker (BMK) algorithm developped allowed to accurately discriminate MDD from depressive BD in an external cohort, with high accuracy, sensitivity and specificity values (82.5 %, 86.4 % and 80.8 %, respectively). These findings further confirm the important role of RNA editing in the physiopathology of mental disorders and emphasize the possible clinical usefulness of the biomarker panel for optimization treatment delay in patients suffering from BD.
Collapse
Affiliation(s)
- Nicolas Salvetat
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | | | - Aurélie Delacrétaz
- Les Toises. Center for psychiatry and psychotherapy, Lausanne, Switzerland
| | - Christopher Cayzac
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Benjamin Dubuc
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Diana Vetter
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Jacques Dainat
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Jean-Philippe Lang
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France; Les Toises. Center for psychiatry and psychotherapy, Lausanne, Switzerland
| | - Franziska Gamma
- Les Toises. Center for psychiatry and psychotherapy, Lausanne, Switzerland
| | - Dinah Weissmann
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France.
| |
Collapse
|
2
|
Hayashi MAF, Salvetat N, Cayzac C, Checa-Robles FJ, Dubuc B, Mereuze S, Nani JV, Molina F, Brietzke E, Weissmann D. Euthymic and depressed bipolar patients are characterized by different RNA editing patterns in blood. Psychiatry Res 2023; 328:115422. [PMID: 37643531 DOI: 10.1016/j.psychres.2023.115422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Bipolar disorder (BD) is a worldwide leading cause of disability. Inflammation roles in this disease is well established. ADAR1-mediated RNA editing is one of the key mechanisms regulating the inflammatory response. We have identified a panel of RNA editing-based blood biomarkers which allowed to discriminate unipolar from BD depression with high accuracy. We confirmed here the diagnostic value of this panel in a new cohort of BD patients recruited in Brazil. We also identified new combinations which allow a clear discrimination of BD from healthy controls and among BD subgroups, confirming that RNA editing is a key mechanism in BD.
Collapse
Affiliation(s)
- Mirian A F Hayashi
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), Rua 3 de maio 100, Ed. INFAR, 3rd floor, SP CEP 04044-020, Brazil; National Institute for Translational Medicine (INCT-TM, CNPq/FAPESP/CAPES), Ribeirão Preto, Brazil.
| | - Nicolas Salvetat
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, 1682 rue de la Valsière, Montpellier 34184, France
| | - Christopher Cayzac
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, 1682 rue de la Valsière, Montpellier 34184, France
| | | | - Benjamin Dubuc
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, 1682 rue de la Valsière, Montpellier 34184, France
| | - Sandie Mereuze
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, 1682 rue de la Valsière, Montpellier 34184, France
| | - João V Nani
- Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), Rua 3 de maio 100, Ed. INFAR, 3rd floor, SP CEP 04044-020, Brazil; National Institute for Translational Medicine (INCT-TM, CNPq/FAPESP/CAPES), Ribeirão Preto, Brazil
| | - Franck Molina
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, 1682 rue de la Valsière, Montpellier 34184, France
| | - Elisa Brietzke
- Department of Psychiatry, Queen's University School of Medicine, Kingston, Canada
| | - Dinah Weissmann
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, 1682 rue de la Valsière, Montpellier 34184, France.
| |
Collapse
|
3
|
Salvetat N, Checa-Robles FJ, Patel V, Cayzac C, Dubuc B, Chimienti F, Abraham JD, Dupré P, Vetter D, Méreuze S, Lang JP, Kupfer DJ, Courtet P, Weissmann D. A game changer for bipolar disorder diagnosis using RNA editing-based biomarkers. Transl Psychiatry 2022; 12:182. [PMID: 35504874 PMCID: PMC9064541 DOI: 10.1038/s41398-022-01938-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/30/2022] [Accepted: 04/19/2022] [Indexed: 11/08/2022] Open
Abstract
In clinical practice, differentiating Bipolar Disorder (BD) from unipolar depression is a challenge due to the depressive symptoms, which are the core presentations of both disorders. This misdiagnosis during depressive episodes results in a delay in proper treatment and a poor management of their condition. In a first step, using A-to-I RNA editome analysis, we discovered 646 variants (366 genes) differentially edited between depressed patients and healthy volunteers in a discovery cohort of 57 participants. After using stringent criteria and biological pathway analysis, candidate biomarkers from 8 genes were singled out and tested in a validation cohort of 410 participants. Combining the selected biomarkers with a machine learning approach achieved to discriminate depressed patients (n = 267) versus controls (n = 143) with an AUC of 0.930 (CI 95% [0.879-0.982]), a sensitivity of 84.0% and a specificity of 87.1%. In a second step by selecting among the depressed patients those with unipolar depression (n = 160) or BD (n = 95), we identified a combination of 6 biomarkers which allowed a differential diagnosis of bipolar disorder with an AUC of 0.935 and high specificity (Sp = 84.6%) and sensitivity (Se = 90.9%). The association of RNA editing variants modifications with depression subtypes and the use of artificial intelligence allowed developing a new tool to identify, among depressed patients, those suffering from BD. This test will help to reduce the misdiagnosis delay of bipolar patients, leading to an earlier implementation of a proper treatment.
Collapse
Affiliation(s)
- Nicolas Salvetat
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | | | - Vipul Patel
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Christopher Cayzac
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Benjamin Dubuc
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Fabrice Chimienti
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | | | - Pierrick Dupré
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Diana Vetter
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Sandie Méreuze
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
| | - Jean-Philippe Lang
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France
- Les Toises. Center for Psychiatry and Psychotherapy, Lausanne, Switzerland
| | - David J Kupfer
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Philippe Courtet
- Department of Psychiatric Emergency & Acute Care, Lapeyronie Hospital, CHU Montpellier, Montpellier, France
| | - Dinah Weissmann
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Montpellier, France.
| |
Collapse
|
4
|
Schneider FS, Molina L, Picot MC, L'Helgoualch N, Espeut J, Champigneux P, Alali M, Baptiste J, Cardeur L, Carniel C, Davy M, Dedisse D, Dubuc B, Fenech H, Foulongne V, Gaillard CF, Galtier F, Makinson A, Marin G, Santos RM, Morquin D, Ouedraogo A, Lejeune AP, Quenot M, Keiflin P, Robles FC, Rego CR, Salvetat N, Trento C, Vetter D, Molina F, Reynes J. Performances of rapid and connected salivary RT-LAMP diagnostic test for SARS-CoV-2 infection in ambulatory screening. Sci Rep 2022; 12:2843. [PMID: 35181680 PMCID: PMC8857239 DOI: 10.1038/s41598-022-04826-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 12/22/2021] [Indexed: 12/27/2022] Open
Abstract
In the context of social events reopening and economic relaunch, sanitary surveillance of SARS-CoV-2 infection is still required. Here, we evaluated the diagnostic performances of a rapid, extraction-free and connected reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay on saliva. Nasopharyngeal (NP) swabs and saliva from 443 outpatients were collected simultaneously and tested by reverse-transcription quantitative PCR (RT-qPCR) as reference standard test. Seventy-one individuals (16.0%) were positive by NP and/or salivary RT-qPCR. Sensitivity and specificity of salivary RT-LAMP were 85.9% (95%CI 77.8–94.0%) and 99.5% (98.7–100%), respectively. Performances were similar for symptomatic and asymptomatic participants. Moreover, SARS-CoV-2 genetic variants were analyzed and no dominant mutation in RT-LAMP primer region was observed during the period of the study. We demonstrated that this RT-LAMP test on self-collected saliva is reliable for SARS-CoV-2 detection. This simple connected test with optional automatic results transfer to health authorities is unique and opens the way to secure professional and social events in actual context of economics restart.
Collapse
Affiliation(s)
- Francisco Santos Schneider
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Laurence Molina
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Marie-Christine Picot
- Clinical Research and Epidemiology Unit, Department of Medical Information, Montpellier University Hospital, University of Montpellier, Montpellier, France.,INSERM Centre Investigation Clinique 1411, University Hospital, Montpellier, France
| | - Nicolas L'Helgoualch
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Julien Espeut
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Pierre Champigneux
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Mellis Alali
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Julie Baptiste
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Lise Cardeur
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | | | - Martin Davy
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | | | - Benjamin Dubuc
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Hugo Fenech
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Vincent Foulongne
- PCCEI, Univ Montpellier, INSERM, EFS, Univ Antilles, Montpellier, France
| | - Carole Fruchart Gaillard
- CEA, INRAE, Department of Medicines and Healthcare Technologies (DMTS), University of Paris-Saclay, SIMoS, Gif-sur-Yvette, France
| | - Florence Galtier
- INSERM Centre Investigation Clinique 1411, University Hospital, Montpellier, France
| | - Alain Makinson
- Infectious Diseases Department, Montpellier University Hospital, Montpellier, France.,TransVIHMI, IRD, INSERM, University of Montpellier, Montpellier, France
| | - Grégory Marin
- Clinical Research and Epidemiology Unit, Department of Medical Information, Montpellier University Hospital, University of Montpellier, Montpellier, France
| | - Raissa Medina Santos
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - David Morquin
- Infectious Diseases Department, Montpellier University Hospital, Montpellier, France.,TransVIHMI, IRD, INSERM, University of Montpellier, Montpellier, France
| | - Alimata Ouedraogo
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Alexandra Prieux Lejeune
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Marine Quenot
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | | | - Francisco Checa Robles
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Carolina Rodrigues Rego
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Nicolas Salvetat
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Charline Trento
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Diana Vetter
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Franck Molina
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.
| | - Jacques Reynes
- Infectious Diseases Department, Montpellier University Hospital, Montpellier, France.,TransVIHMI, IRD, INSERM, University of Montpellier, Montpellier, France
| |
Collapse
|
5
|
Niro F, Dubuc B, Gaynor-Sodeifi K, Jensen D. Effect of end-inspiratory lung volume and breathing pattern on neural activation of the diaphragm and extra-diaphragmatic inspiratory muscles in healthy adults. J Appl Physiol (1985) 2021; 131:1679-1690. [PMID: 34734781 DOI: 10.1152/japplphysiol.01118.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study examined the effect of changes in end-inspiratory lung volume (EILV) and breathing pattern on neural activation of the crural diaphragm (EMGDIA) and of the sternocleidomastoid (EMGSCM), scalene (EMGSCA) and external intercostal muscles (EMGINT) at constant ventilation (V̇E). Twelve healthy adults performed a series of 30-sec breathing trials at a constant V̇E corresponding to 15% of their maximum voluntary ventilation while (i) altering EILV at a constant breathing pattern and (ii) altering breathing pattern at a constant EILV. Using a real-time visual display of each participant's spirogram, EILV was voluntarily targeted at 65% (EILV65%), 75% (EILV75%), 85% (EILV85%) and 95% (EILV95%) of each participant's inspired vital capacity, while breathing frequency (fR) was targeted at 15, 35 and 50 breaths/min using a metronome. The tidal volume needed for a participant to maintain V̇E constant across trials was achieved via changes in end-expiratory lung volume. A multipair esophageal electrode catheter was used to record EMGDIA, while surface electrodes were used to record EMGSCM, EMGSCA and EMGINT. On average, EMGDIA, EMGSCM, EMGSCA and EMGINT increased as a function of increasing EILV at constant V̇E, independent of changes in breathing pattern. The magnitudes of these increases were particularly notable in the transition from EILV85% to EILV95%, especially for EMGSCM and EMGSCA. In healthy adults, as EILV increases towards total lung capacity, progressive compensatory increases in neural activation of the diaphragm and extra-diaphragmatic inspiratory muscles are needed to support V̇E, independent of changes in breathing pattern.
Collapse
Affiliation(s)
- Frank Niro
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
| | - Benjamin Dubuc
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
| | - Kaveh Gaynor-Sodeifi
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
| | - Dennis Jensen
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada.,Research Institute of the McGill University Health Centre, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Research Centre for Physical Activity and Health, Faculty of Education, McGill University, Montréal, Quebec, Canada
| |
Collapse
|
6
|
Salvetat N, Chimienti F, Cayzac C, Dubuc B, Checa-Robles F, Dupre P, Mereuze S, Patel V, Genty C, Lang JP, Pujol JF, Courtet P, Weissmann D. Phosphodiesterase 8A to discriminate in blood samples depressed patients and suicide attempters from healthy controls based on A-to-I RNA editing modifications. Transl Psychiatry 2021; 11:255. [PMID: 33931591 PMCID: PMC8087806 DOI: 10.1038/s41398-021-01377-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 03/19/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022] Open
Abstract
Mental health issues, including major depressive disorder, which can lead to suicidal behavior, are considered by the World Health Organization as a major threat to global health. Alterations in neurotransmitter signaling, e.g., serotonin and glutamate, or inflammatory response have been linked to both MDD and suicide. Phosphodiesterase 8A (PDE8A) gene expression is significantly decreased in the temporal cortex of major depressive disorder (MDD) patients. PDE8A specifically hydrolyzes adenosine 3',5'-cyclic monophosphate (cAMP), which is a key second messenger involved in inflammation, cognition, and chronic antidepressant treatment. Moreover, alterations of RNA editing in PDE8A mRNA has been described in the brain of depressed suicide decedents. Here, we investigated PDE8A A-to-I RNA editing-related modifications in whole blood of depressed patients and suicide attempters compared to age-matched and sex-matched healthy controls. We report significant alterations of RNA editing of PDE8A in the blood of depressed patients and suicide attempters with major depression, for which the suicide attempt took place during the last month before sample collection. The reported RNA editing modifications in whole blood were similar to the changes observed in the brain of suicide decedents. Furthermore, analysis and combinations of different edited isoforms allowed us to discriminate between suicide attempters and control groups. Altogether, our results identify PDE8A as an immune response-related marker whose RNA editing modifications translate from brain to blood, suggesting that monitoring RNA editing in PDE8A in blood samples could help to evaluate depressive state and suicide risk.
Collapse
Affiliation(s)
- Nicolas Salvetat
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Fabrice Chimienti
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Christopher Cayzac
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Benjamin Dubuc
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Francisco Checa-Robles
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Pierrick Dupre
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Sandie Mereuze
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Vipul Patel
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Catherine Genty
- Department of Emergency Psychiatry and Acute Care, University Hospital/INSERM U1061, 191 Av. du Doyen Gaston Giraud, Montpellier, 34295 France
| | - Jean-Philippe Lang
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Jean-François Pujol
- grid.4444.00000 0001 2112 9282ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184 France
| | - Philippe Courtet
- Department of Emergency Psychiatry and Acute Care, University Hospital/INSERM U1061, 191 Av. du Doyen Gaston Giraud, Montpellier, 34295 France
| | - Dinah Weissmann
- ALCEDIAG/Sys2Diag, CNRS UMR 9005, Parc Euromédecine, Cap Delta, 1682 Rue de la Valsière, Montpellier, 34184, France.
| |
Collapse
|
7
|
Abraham JD, Salvetat N, Checa-Robles F, Patel V, Cayzac C, Dubuc B, Vetter D, Lang JP, Courtet P, Kupfer D, Weissmann D. Game changer in the diagnosis of bipolar disorder using RNA editing-based blood biomarkers. Eur Psychiatry 2021. [PMCID: PMC9471217 DOI: 10.1192/j.eurpsy.2021.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Introduction In clinical practice, differentiating Bipolar Disorder (BD) from unipolar depression is challenging due to the depressive symptoms, which are the core presentations of both disorders. Patients with BD are often misdiagnosed during depressive episodes resulting in a delay in proper treatment and a poor management of their condition. Objectives The aim of the present study is to discriminate between unipolar depression and BD using a panel of RNA edited blood biomarkers. Methods Depressed patients were classified according to clinical scores in MADRS and IDSC-30 depression scales. After blood collection and RNA extraction, we used whole-transcriptome sequencing to identify differential A-to-I editing events, and Targeted Next Generation Sequencing to validate those biomarkers. Results We discovered 646 variants differentially edited between depressed patients and control in a discovery cohort of 57 participants. After using stringent criteria and biological pathway analysis, 6 biomarker candidates were singled out and tested in a validation cohort of 160 patients suffering from unipolar depression and 95 BD patients in a depressive episode, which allowed a differential diagnosis of BD with an AUC of 0.935 and high specificity (Sp=84.6%) and sensitivity (Se=90.9%). Conclusions We have shown that a combination of 6 blood RNA editing-related biomarkers allows to discriminate unipolar and bipolar depression This 6 BMKs panel may be crucial to improve BD diagnosis and orientate the treatment therefore addressing the needs of millions of patients suffering from misdiagnosis and incorrect treatment for their diseases. This will change the game for the management of patients. Disclosure No significant relationships.
Collapse
|
8
|
Prieur A, Cappellini M, Habif G, Lefranc MP, Mazard T, Morency E, Pascussi JM, Flacelière M, Cahuzac N, Vire B, Dubuc B, Durochat A, Liaud P, Ollier J, Pfeiffer C, Poupeau S, Saywell V, Planque C, Assenat E, Bibeau F, Bourgaux JF, Pujol P, Sézeur A, Ychou M, Joubert D. Targeting the Wnt Pathway and Cancer Stem Cells with Anti-progastrin Humanized Antibodies as a Potential Treatment for K-RAS-Mutated Colorectal Cancer. Clin Cancer Res 2017; 23:5267-5280. [PMID: 28600477 DOI: 10.1158/1078-0432.ccr-17-0533] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/27/2017] [Accepted: 06/05/2017] [Indexed: 12/11/2022]
Abstract
Purpose: Patients with metastatic colorectal cancer suffer from disease relapse mainly due to cancer stem cells (CSC). Interestingly, they have an increased level of blood progastrin, a tumor-promoting peptide essential for the self-renewal of colon CSCs, which is also a direct β-catenin/TCF4 target gene. In this study, we aimed to develop a novel targeted therapy to neutralize secreted progastrin to inhibit Wnt signaling, CSCs, and reduce relapses.Experimental Design: Antibodies (monoclonal and humanized) directed against progastrin were produced and selected for target specificity and affinity. After validation of their effectiveness on survival of colorectal cancer cell lines harboring B-RAF or K-RAS mutations, their efficacy was assessed in vitro and in vivo, alone or concomitantly with chemotherapy, on CSC self-renewal capacity, tumor recurrence, and Wnt signaling.Results: We show that anti-progastrin antibodies decrease self-renewal of CSCs both in vitro and in vivo, either alone or in combination with chemotherapy. Furthermore, migration and invasion of colorectal cancer cells are diminished; chemosensitivity is prolonged in SW620 and HT29 cells and posttreatment relapse is significantly delayed in T84 cells, xenografted nude mice. Finally, we show that the Wnt signaling activity in vitro is decreased, and, in transgenic mice developing Wnt-driven intestinal neoplasia, the tumor burden is alleviated, with an amplification of cell differentiation in the remaining tumors.Conclusions: Altogether, these data show that humanized anti-progastrin antibodies might represent a potential new treatment for K-RAS-mutated colorectal patients, for which there is a crucial unmet medical need. Clin Cancer Res; 23(17); 5267-80. ©2017 AACR.
Collapse
Affiliation(s)
| | | | | | | | - Thibault Mazard
- Institut Régional du Cancer de Montpellier, Montpellier, France
| | | | | | | | | | | | | | | | | | | | | | | | | | - Chris Planque
- Institut de Génomique Fonctionnelle, Montpellier, France
| | - Eric Assenat
- Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Frédéric Bibeau
- Institut Régional du Cancer de Montpellier, Montpellier, France
| | | | - Pascal Pujol
- Departement d'oncogénétique clinique, CHRU Montpellier, Montpellier, France
| | - Alain Sézeur
- Groupe Hospitalier Diaconesses Croix St Simon Chirurgie Digestive, Paris, France
| | - Marc Ychou
- Institut Régional du Cancer de Montpellier, Montpellier, France
| | | |
Collapse
|
9
|
Hagen NA, Lapointe B, Ong-Lam M, Dubuc B, Walde D, Gagnon B, Love R, Goel R, Hawley P, Ngoc AH, du Souich P. A multicentre open-label safety and efficacy study of tetrodotoxin for cancer pain. ACTA ACUST UNITED AC 2012; 18:e109-16. [PMID: 21655148 DOI: 10.3747/co.v18i3.732] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Cancer pain is highly prevalent, and existing treatments are often insufficient to provide adequate relief. OBJECTIVES We assessed the long-term safety and efficacy of subcutaneous tetrodotoxin treatment in reducing the intensity of chronic cancer-related pain. METHODS In this multicentre open-label longitudinal trial, 30 μg tetrodotoxin was administered subcutaneously twice daily for 4 days in a heterogeneous cohort of patients with persistent pain despite opioids and other analgesics. "Responder" was defined as a mean reduction of 30% or more in pain intensity from baseline; and "clinical responder" as some pain reduction, but less than 30%, plus agreement on the part of both the patient and the physician that a meaningful analgesic response to treatment had occurred. RESULTS Of 45 patients who entered the longitudinal trial, 41 had sufficient data for analysis. Of all 45 patients, 21 (47%) met the criteria for "responder" [16 patients (36%)] or "clinical responder" [5 patients (11%)]. Onset of pain relief was typically cumulative over days, and after administration ended, the analgesic effect subsided over the course of a few weeks. No evidence of loss of analgesic effect was observed during subsequent treatments (2526 patient-days in total and a maximum of 400 days in 1 patient). One patient withdrew from the study because of adverse events. Toxicity was usually mild (82%) or moderate (13%), and remained so through subsequent treatment cycles, with no evidence of cumulative toxicity or tolerance. CONCLUSIONS Long-term treatment with tetrodotoxin is associated with acceptable toxicity and, in a substantial minority of patients, resulted in a sustained analgesic effect. Further study of tetrodotoxin for moderate-to-severe cancer pain is warranted.
Collapse
Affiliation(s)
- N A Hagen
- Tom Baker Cancer Centre and Departments of Oncology, Clinical Neurosciences, and Medicine, University of Calgary, Calgary, AB.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Thibert R, Dubuc B, Dufour M, Tawashi R. Evaluation of the surface roughness of cystine stones using a visible laser diode scattering approach. Scanning Microsc 1993; 7:555-60; discussion 561. [PMID: 8108672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
To understand the processes of fragmentation and the chemical reactivity of solids, proper characterization of surface topography is crucial. This paper describes a non-destructive technique of quantifying the surface roughness of cystine renal stones, using visible laser diode scattering and fractal geometry. Fragments of cystine stones were mounted on microscope slides and coated by a carbon-sputtering apparatus. The slides were placed under a dynamic active-vision system, using a visible laser diode to measure three-dimensional surface coordinates. The data obtained were analyzed by fractal geometry. Surface fractal dimensions were determined by the variation method. The results showed that the surface of a compact-size sample can be evaluated quantitatively. The technique is valuable for the accurate presentation of surfaces in three dimensions.
Collapse
Affiliation(s)
- R Thibert
- Faculté de Pharmacie, Université de Montréal, Canada
| | | | | | | |
Collapse
|
11
|
Dubuc B, Castellucci VF. Receptive fields and properties of a new cluster of mechanoreceptor neurons innervating the mantle region and the branchial cavity of the marine mollusk Aplysia californica. J Exp Biol 1991; 156:315-34. [PMID: 1675656 DOI: 10.1242/jeb.156.1.315] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The rostral LE cluster (rLE) is a new set of mechanoreceptor neurons of the abdominal ganglion innervating the mantle area, the branchial cavity, the gill and the siphon of the marine mollusk Aplysia californica Cooper. We have compared the organization of rLE cell receptive fields with that of three other clusters of sensory neurons in the abdominal ganglion (LE, RE and RF) that we have reanalysed. There is extensive overlap of receptive fields from the four populations of sensory cells, and the most exposed areas of the mantle are the most densely innervated. The sensory threshold is similar for all groups. The action potentials of the LE, rLE and RE neurons are broadened by serotonin and the peptide SCPB and narrowed by dopamine and FMRFamide. The RF group does not show the same kind of sensitivity to these neuromodulators. The synaptic outputs of the LE and rLE neurons undergo similar synaptic depression and homosynaptic and heterosynaptic facilitation. We estimate that 100 mechanoreceptor neurons innervate the entire mantle and siphon skin, gill and branchial cavity of Aplysia. The degree of their convergence onto various interneurons and motor neurons mediating the gill- and siphon-withdrawal reflex and other reflexes is under investigation.
Collapse
Affiliation(s)
- B Dubuc
- Laboratoire de Neurobiologie, Faculté de Médecine, Université de Montréal, Québec, Canada
| | | |
Collapse
|
12
|
Dodds K, Hauschild A, Dubuc B. Botulism in Canada--summary for 1988. Can Dis Wkly Rep 1989; 15:78-9. [PMID: 2720803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
13
|
Dodds K, Dubuc B. Botulism in Fort Chimo, Quebec. Can Dis Wkly Rep 1989; 15:79-80. [PMID: 2720804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
14
|
Dubuc B, Quiniou JF, Roques-Carmes C, Tricot C, Zucker SW. Evaluating the fractal dimension of profiles. Phys Rev A Gen Phys 1989; 39:1500-1512. [PMID: 9901387 DOI: 10.1103/physreva.39.1500] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
15
|
|
16
|
Akbarieh M, Dubuc B, Tawashi R. Surface studies of calcium oxalate dihydrate single crystals during dissolution in the presence of urine. Scanning Microsc 1987; 1:1397-403. [PMID: 3659870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Single crystals of Calcium Oxalate Dihydrate (COD) were grown from solution under controlled release of the reacting ions. Dissolution of COD was studied at different pH levels and in different dilutions of urine. The descriptors of the contour were determined during dissolution of COD using a quantitative morphological technique. The shape parameters and surface ruggedness were determined from Fourier and fractal analysis. The results obtained give quantitative information on the dissolution kinetics and the surface geometry of COD crystals in normal and diluted urine. Dissolution inhibition and morphological changes of COD crystals during dissolution were attributed to selective adsorption of urine non-ionic macromolecules on the crystal stepped surface. Surface etching of COD was found to depend on urine dilution and time of incubation. The data obtained suggest that the geometric structure of the surface is likely to be a potential factor in understanding crystal aggregation in stone formation.
Collapse
Affiliation(s)
- M Akbarieh
- Faculty of Pharmacy, University of Montreal, Quebec, Canada
| | | | | |
Collapse
|
17
|
Graham WG, O'Grady RV, Dubuc B. Pulmonary function loss in Vermont granite workers. A long-term follow-up and critical reappraisal. Am Rev Respir Dis 1981; 123:25-8. [PMID: 6257153 DOI: 10.1164/arrd.1981.123.1.25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Previous studies of Vermont granite workers averred that pulmonary function loss was occurring at 2 to 3 times the normal rate. The excess loss was attributed to the current, relatively low concentrations of dust prevailing in the stone sheds. Because the Vermont State Health Department had traditionally provided surveillance of granite workers to detect evidence of occupationally related illness, we offered pulmonary function screening to any currently employed worker. Spirometric data from the first 150 workers, compared with data from the previous studies, showed a large increase in the FVC and a smaller increase in the FEV1. We therefore undertook a survey of the entire stone shed work force, as well as of retired workers tested previously. The results in 487 current workers indicated an overall increase in FVC from 1974 to 1979 of 0.540 L, and an increase in FEV1 of 0.030 L: predicted losses based on the previous studies were 0.350 to 0.400 L in FVC and 0.250 to 0.350 L in the FEV1. Analysis of data in various subgroups, such as retired workers or those with more than 20 yr of work experience, also showed increases in FVC, and either slight gains or minimal losses in FEV1. The possible reasons for apparent improvement in pulmonary function are discussed. We concluded that technical deficiencies in the previous studies led to exaggerated and erroneous estimates of loss. At this time, the actual decrement in pulmonary function values for exposed granite workers is not known and requires further investigation. Because the newly proposed, stricter standard, for silica was importantly influenced by the previous studies, we believe that adoption of this standard would be premature.
Collapse
|