Philippe Courtet

Université de Montpellier | UM1 · Emergencic Psychiatry

Previous studies have suggested that alterations in white matter (WM) microstructure are implicated in suicidal thoughts and behaviours (STBs). However, findings of diffusion tensor imaging (DTI) studies have been inconsistent. In this large-scale mega-analysis conducted by the ENIGMA Suicidal Thoughts and Behaviours (ENIGMA-STB) consortium, we exa...

Introduction: Bipolar disorders (BD) are characterized by mood symptoms that can worsen medication side effects. We aimed to study the association between residual mood signs and self-reported side effects in the euthymic phase of BD. Methods: We assessed residual mood signs using the Montgomery–Asberg Depression Rating scale (MADRS) and Young Mani...

Background Obsessive-compulsive disorder (OCD) and eating disorders (ED) share common features, including the presence of obsessions and compulsions, and they often co-occur. Additionally, there is a significant comorbidity between ED and childhood traumatic experiences (CTE), as well as between CTE and OCD. Various biological and environmental fac...

Over 700,000 people die by suicide annually. Collecting longitudinal fine-grained data about at-risk individuals, as they occur in the real world, can enhance our understanding of the temporal dynamics of suicide risk, leading to better identification of those in need of immediate intervention. Self-assessment questionnaires were collected over tim...

The SmartCrisis-Teen Study Protocol. Abstract: Suicidal behavior and Non-Suicidal Self-Injuries (NSSIs) are a major health problem in the adolescent population. New technologies can contribute to the development of innovative interventions in suicide prevention. Here, we present the SmartCrisis-Teen study protocol. The study consists of a randomize...

Background: Individuals with bipolar disorders (BD) have an estimated loss of life expectancy around 10-15 years. Several laboratory-measured biomarkers of accelerated aging exist (e.g., telomere length), however with a questionable transferability to bedside. There is a need for easily and inexpensively measurable markers of aging, usable in rout...

Objectives Electroconvulsive therapy (ECT) is one of the most effective treatments in mood disorders, mainly in major depressive episode (MDE) in the context of either unipolar (MDD) or bipolar disorder (BD). However, ECT remains a neglected and underused treatment. Older people are at high risk patients for the development of adverse drug reaction...

Background and Hypothesis Schizophrenia (SCZ) and anorexia nervosa (AN) are 2 severe and highly heterogeneous disorders showing substantial familial co-aggregation. Genetic factors play a significant role in both disorders, but the shared genetic etiology between them is yet to be investigated. Study Design Using summary statistics from recent lar...

Purpose of Review In this narrative review we wanted to describe the relationship of autonomic nervous system activity with social environment and suicidal spectrum behaviors. Recent Findings Patients with suicidal ideation/suicide attempt have higher sympathetic nervous system (SNS) and lower parasympathetic nervous system (PNS) activity in resti...

Background BIPCOM aims to (1) identify medical comorbidities in people with bipolar disorder (BD); (2) examine risk factors and clinical profiles of Medical Comorbidities (MC) in this clinical group, with a special focus on Metabolic Syndrome (MetS); (3) develop a Clinical Support Tool (CST) for the personalized management of BD and medical comorbi...

Objective: The Psychological-Physical-Pain Visual Analogue Scale (PPP-VAS) was thought to probably help in identifying patients at risk of suicide. However, no data on its validity to measure psychological pain was available. Our main aim was to investigate the convergent validity of the PPP-VAS using two well-validated scales of psychological pain...

Decision-making styles are a habit-based propensity that drive behavior and affect daily life. Rational and intuitive decision-making styles have been associated with good mental health. However, the underlying mechanisms are not clear. In the last decade, high basal levels of heart rate variability (HRV) have been proposed as an index of health an...

Bipolar disorders (BD) are characterized by mood symptoms that can worsen medication side effects. We aimed to study the association between mood signs and self-reported side effects in the euthymic phase of BD. We assessed mood signs using the MADRS and YMRS and self-reported side effects using the PRISE-M for 880 males and 1369 females with BD. W...

Background: Major depressive disorder is one of the leading causes of disability worldwide. Recently, the WHO has highlighted the negative impact of recent crises (COVID-19 pandemic, war in Ukraine, economic crisis). Although most international guidelines recommend psychological and psychosocial interventions as a first-line treatment for mild to...

Background With 11,558 deaths and 200,000 suicide attempts in 2019, France is among the European countries most affected. The aim of this study was to determine the costs and burden of suicides and suicide attempts in France (population 67 million). Methods We estimated direct costs, comprising healthcare, as well as post-mortem costs including au...

Bipolar disorder (BD) has been associated with premature cellular aging with shortened telomere length (TL) as compared to the general population. We recently identified a subgroup of young individuals with prematurely shortened TL. The aims of the present study were to replicate this observation in a larger sample and analyze the expression levels...

A comprehensive handbook covering current, controversial, and debated topics in psychiatric practice, aligned to the EPA Scientific Sections. All chapters been written by international experts active within their respective fields and they follow a structured template, covering updates relevant to clinical practice and research, current challenges,...

BACKGROUND The literature investigating changes in biomarkers after internet-based psychological and mental health interventions is not yet extensively inquired. OBJECTIVE This rapid systematic review aims to provide a synthesis of literature examining the effects of internet-based psychological interventions on biomarkers. METHODS This review wa...

Background Internet-based psychological interventions provide accessible care to a wide range of users, overcoming some obstacles—such as distance, costs, and safety—that might discourage seeking help for mental issues. It is well known that psychological treatments and programs affect the body, as well as the mind, producing physiological changes...

Importance Examining translatable mitochondrial blood-based biological markers to identify its association with metabolic diseases in bipolar disorder. Objective To test whether mitochondrial metabolites, mainly lactate, and cell-free circulating mitochondrial DNA are associated with markers of metabolic syndrome in bipolar disorder, hypothesizing...

Background Physical pain is a common issue in people with bipolar disorder (BD). It worsens mental health and quality of life, negatively impacts treatment response, and increases the risk of suicide. Lithium, which is prescribed in BD as a mood stabilizer, has shown promising effects on pain. Methods This naturalistic study included 760 subjects...

Les patients souffrant de dépression suicidaire répondent moins bien aux traitements antidépresseurs conventionnels que ceux qui n’ont pas d’idées suicidaires. Une avancée prometteuse dans ce domaine est l’utilisation de la kétamine, qui a montré une efficacité significative et rapide dans la réduction de l’intensité des idées suicidaires chez les...

Since the middle of the 20th century, synthetic sex hormones (estrogens and progestins) have been administered to millions of pregnant or not women worldwide, mainly to avoid miscarriage or for comfort, although their mode of action and their effects on the mother and fetus were ignored. Despite the alerts and the description of somatic and psychia...

Depressive disorders represent the largest proportion of mental illnesses, and by 2030, they are expected to be the first cause of disability-adjusted life years [1]. The COVID-19 pandemic exacerbated prevalence and burden of depression and increased the occurrence of depressive symptoms in general population [2]. The urgency of implementing mental...

This paper offers a systematic review of quantitative and qualitative studies on the main twelve-step mutual-help (TSMH) groups (excluding Alcoholics Anonymous) and four meta-analyses exploring the correlation between (i) duration or involvement in TSMH groups and; (ii) severity of symptoms or quality of life. Systematic review was conducted follow...

Background Many patients with depression refuse treatment. Moreover, suicide attempters often display low perceived need of treatment and impaired decision-making. These observations raise questions about the capacity to treatment consent in depressed suicide attempters (SA). Methods In patients with current depressive episode ( N = 33 SAs and N =...

Previous studies set out profound cognitive impairments in subjects with treatment-resistant depression (TRD). However, little is known about the course of such alterations depending on levels of improvement in those patients followed longitudinally. The main objective of this study was to describe the course of cognitive impairments in responder v...

Background: Patients with major mood disorders are at high risk of suicidal behavior compared to the general population. Suicide is a public health concern, accounting for around 1.2% of deaths worldwide. Understanding its underlying mechanisms may help identify predictive biomarkers and design novel targeted treatments. Immune dysfunctions, in par...

Bipolar disorder (BD) has been associated with premature cellular aging with shortened telomere length (TL) as compared to the general population. We recently identified a subgroup of young individuals with prematurely shortened TL. The aims of the present study were to replicate this observation in a larger sample and analyze the expression levels...

Bipolar disorder (BD) is a chronic and severe psychiatric disorder associated with significant medical morbidity and reduced life expectancy. In this study, we assessed accelerated epigenetic aging in individuals with BD using various DNA methylation (DNAm)-based markers. For this purpose, we used five epigenetic clocks (Horvath, Hannum, EN, PhenoA...

Discerning potential associations between plasma biomarkers and the evolution of suicidal ideation (SI) in mood disorders could advance our understanding of disease progression. We evaluated a cohort of 149 mood disorder patients, assessing 32 plasma soluble proteins implicated in neuroplasticity and inflammation at baseline and six-month follow-up...

Background: Eating disorders (EDs) are liable to alter the disease course of bipolar disorder (BD). We explored the crossed clinical features between EDs and BD, particularly as a function of BD type (BD1 vs. BD2). Methods: 2929 outpatients attending FondaMental Advanced Centers of Expertise were assessed for BD and lifetime EDs with a semi-stru...

Background: This study explores factors associated with transitioning from recent suicidal ideation (SI) to suicide attempt (SA) in depressed outpatients. Methods: This is a case-control study nested in two cohorts (LUEUR and GENESE) of depressed adult outpatients recruited in France and followed up for six weeks. SI, depression, anxiety, insomn...

Background: Modified pain perception is at the core of many theories on suicide; however, studies on the relationship between pain perception and suicidal behavior (attempt) have produced contradictory results. In this experimental study, we investigated whether physical pain and social pain are concomitantly influenced by suicidal ideation (SI) a...

Background Individuals with bipolar disorders (BD) are at risk of premature death, mainly due to medical comorbidities. Childhood maltreatment might contribute to this medical morbidity, which remains underexplored in the literature. Methods We assessed 2891 outpatients with BD (according to DSM-IV criteria). Childhood maltreatment was assessed us...

Bipolar disorders (BD) are characterized by cognitive impairment during the euthymic phase, to which treatments can contribute. The anticholinergic properties of medications, i.e., the ability of a treatment to inhibit cholinergic receptors, are associated with cognitive impairment in elderly patients and people with schizophrenia but this associat...

Background: Benzodiazepine long-term use (BLTU) is a public health challenge. We lack data on the consequences of LBTU on the trajectory of treatment-resistant depression (TRD). Objective: To determine the prevalence of BLTU in a nationwide non-selected population of patients with TRD, to determine the rate of patients succeeding at withdrawing...

Suicidal ideation and attempt might have distinct neural underpinnings. Identifying the neural substrates of suicide behaviors might help to reduce suicide rates. This study wanted to identify i) neural markers of suicide attempt using resting-state functional magnetic resonance imaging (rs-fMRI), and ii) associations between rs-fMRI metrics, suici...

The variability of suicidal thoughts and other clinical factors during follow-up has emerged as a promising phenotype to identify vulnerable patients through Ecological Momentary Assessment (EMA). In this study, we aimed to (1) identify clusters of clinical variability, and (2) examine the features associated with high variability. We studied a set...

Suicidal ideation (SI) is a major suicide risk factor; therefore, it is crucial to identify individuals with SI. Discrepancies between the clinicians and patients' estimation of SI may lead to under-evaluating the suicide risk. Yet, studies on discrepancies between self- and clinician-rated SI are lacking, although identifying the patients' sociode...

Depression is linked to dysfunctional appetitive and aversive motivational systems and effort-based decision-making, yet whether such deficits extend to social decisions remains unclear. Participants (23 non-depressed, 48 depressed - 24 with a past history of suicide attempt) completed a social decision-making task consisting in freely choosing whe...

Objective: A major limitation of current suicide research is the lack of power to identify robust correlates of suicidal thoughts or behavior. Variation in suicide risk assessment instruments used across cohorts may represent a limitation to pooling data in international consortia. Method: Here, we examine this issue through two approaches: (a) an...

Background: Converging evidence suggests that a subgroup of bipolar disorder (BD) with an early age at onset (AAO) may develop from aberrant neurodevelopment. However, the definition of early AAO remains unprecise. We thus tested which age cut-off for early AAO best corresponds to distinguishable neurodevelopmental pathways. Methods: We analyzed...

Objectives: Up to 70% individuals with bipolar disorder (BD) are lifetime tobacco smokers, a major modifiable risk factor for morbidity. However, quitting smoking is rarely proposed to individuals with BD, mainly because of fear of unfavorable metabolic or psychiatric changes. Evaluating the physical and mental impact of tobacco cessation is primo...

Background: Patients suffering from treatment-resistant depression (TRD) are at risk of suicide. Sleep and circadian rhythm alterations are widely recognized as core symptoms of major depressive disorder and are associated with suicidal ideation. Thus, sleep and circadian rhythm alterations may be targeted to prevent suicide. Methods: Patients w...

Objective: In this study, we combined ecological momentary assessment (EMA) with traditional clinical follow-up to explore correlates of suicidal relapse in patients with a history of suicidal behavior. Methods: Over 6 months, we followed up with 393 patients who completed baseline and follow-up interviews and were monitored through smartphone-base...

It is acknowledged that diethylstilbestrol (DES), a synthetic diphenol with powerful estrogenic properties, causes structural anomalies of the reproductive tract and increases the risk of cancer and genital malformations in children and grandchildren of mothers treated during pregnancy. Conversely, data on DES effects on neurodevelopment and psychi...

Suicidal ideation and behaviors, as devastating as they are, are extremely hard to prevent. Their pathophysiology is complex and not fully clear. However, mounting amount of evidence has emerged in recent years, pointing to multiple points of connection between inflammatory dysregulation and suicidal ideation and behaviors. A PubMed search was made...

BACKGROUND Suicide is a major global public health issue becoming increasingly common despite preventive efforts. Though current methods for predicting suicide risk are not sufficiently accurate, technological advances provide invaluable tools with which we may evolve toward a personalized, predictive approach. OBJECTIVE We aim to predict the shor...