Publications by authors named "Etain B"

Background: Quality of life is decreased in bipolar disorders (BD) and contributes to poor prognosis. However, little is known about the causal pathways that may affect it. This study aimed to explore health-related QoL (HRQoL) in BD and investigate its relationship with cognition and psychosocial functioning.

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Background: Despite a variability in response and a narrow therapeutic index, Lithium (Li) remains the gold standard treatment for bipolar disorders (BD), and a treatment of choice for unipolar disorders (UD). Red blood cell Li concentration (RBCLiC) and red blood cell/plasma Li ratio (LiR) have been studied in many areas of mood disorders (such as acute or chronic Li efficacy, adherence, side effects (SE), intoxication management) as well as in several research domains. This systematic review aims to synthesize the existing literature.

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Article Synopsis
  • Bipolar disorder (BD) is a complex mental health condition, and researchers aimed to identify a neurodevelopmental phenotype (NDP) that contributes to its development and impacts clinical outcomes.
  • By analyzing data from over 4,400 BD patients, they established nine specific clinical features that characterize this NDP, which are linked to poorer prognosis and treatment responses.
  • The findings suggest that patients with a higher NDP load may have overlapping genetic factors with ADHD, indicating a potential shared biological basis for these disorders.
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Background: Bipolar Disorder (BD) is associated with alterations of circadian rhythms of activity (CRA). Experimental research suggests that lithium (Li) modifies CRA, but this has been rarely explored in BD using actigraphy.

Methods: The sample comprised 88 euthymic BD-I cases with 3 weeks of actigraphy.

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In bipolar disorders, abnormalities of sleep patterns and of circadian rhythms of activity are observed during mood episodes, but also persist during euthymia. Shared vulnerabilities between mood disorders and abnormalities of sleep patterns and circadian rhythms of activity have been suggested. This exploratory study investigated the association between polygenic risk scores for bipolar disorder and major depressive disorder, actigraphy estimates of sleep patterns, and circadian rhythms of activity in a sample of 62 euthymic individuals with bipolar disorder.

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Background: Nutrition is largely affected in bipolar disorder (BD), however, there is a lack of understanding on the relationship between dietary categories, BD, and the prevalence of metabolic syndrome. The objective of this study is to examine dietary trends in BD and it is hypothesized that diets with increased consumption of seafood and high-fiber carbohydrates will be correlated to improved patient outcomes, and a lower frequency of metabolic syndrome.

Methods: This retrospective cohort study includes two French cohorts.

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  • Individuals with bipolar disorders (BD) tend to have a shorter life expectancy, prompting the need for easily measurable markers of accelerated aging like BioAge, calculated from routine blood tests and physical exams.
  • In a study of 2,220 outpatients with BD, results showed that a small percentage had significant BioAge Acceleration, which is linked to factors such as young age, male sex, being overweight, and sleep issues.
  • Further research is needed to confirm these findings with different groups and explore whether improving factors like metabolic health and sleep could impact aging rates in individuals with BD.
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Objectives: Anxiety and depressive symptoms, as well as cognitive dysfunctions, improve with abstinence in individuals with alcohol use disorders (AUD), but less is known about psychotic features. The objective of this study was to evaluate the psychosis proneness in a sample of individuals with severe AUD and potential changes after alcohol withdrawal.

Method: An observational study was conducted, assessing prospectively Peter's Delusional Inventory scale (PDI); anxiety and depression symptoms by MADRS and cognitive functioning by the MoCA at entry in daycare hospital (D0) and after 30 days (D30).

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  • This study investigates the link between mitochondrial blood biomarkers, specifically lactate and circulating cell-free mitochondrial DNA, and markers of metabolic syndrome in bipolar disorder patients, hypothesizing that lactate levels would be higher in those with metabolic syndrome.
  • The research involved a large cohort of 837 stable bipolar disorder patients and 237 others for validation, revealing that higher lactate levels correlated significantly with factors like triglycerides and blood pressure, indicating a strong association with metabolic syndrome.
  • The findings suggest that while lactate is a key biomarker related to metabolic syndrome in bipolar patients, circulating mitochondrial DNA levels do not show this same correlation, highlighting the potential for personalized treatment strategies based on these metabolite profiles.
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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 reactions.

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Defining homogeneous subgroups of bipolar disorder (BD) is a major goal in personalized psychiatry and research. According to the neurodevelopmental theory, age at onset may be a key variable. As potential trait markers of neurodevelopment, cognitive and functional impairment should be greater in the early form of the disease, particularly type 1 BD (BD I).

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Objectives: Persistent functional impairment is common in bipolar disorder (BD) and is influenced by a number of demographic, clinical, and cognitive features. The goal of this project was to estimate and compare the influence of key factors on community function in multiple cohorts of well-characterized samples of individuals with BD.

Methods: Thirteen cohorts from 7 countries included = 5882 individuals with BD across multiple sites.

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Monitoring of lamotrigine levels is recommended in epilepsy. However, in bipolar disorders (BD), no study has described the therapeutic range in daily practice and factors being associated to it. We used retrospective data of individuals with BD, treated with lamotrigine, and included in the FondaMental Advanced Centers of Expertise for Bipolar Disorders cohort.

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  • Bipolar disorder is linked to premature cellular aging, evidenced by shortened telomere length (TL), particularly in a subgroup of young individuals.
  • A study analyzed 542 individuals with bipolar disorder, finding a cluster of young people (average age 29.64) with significantly shorter TL.
  • Gene expression analysis revealed decreased levels of the gene POT1 in this subgroup, indicating a potential new mechanism related to telomere shortening in bipolar disorder.
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  • Lithium is the primary treatment for bipolar disorder (BD), but how it works and predicts outcomes is not fully understood.
  • A previous study identified key cellular pathways linked to lithium response, including focal adhesion and PI3K-Akt signaling.
  • In this new study, researchers confirmed these pathways in a larger group of 2039 patients but found no connection with the extracellular matrix, suggesting that issues with neuronal growth signaling may impact lithium effectiveness.
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Introduction: Metabolic syndrome (MetS) is a cluster of components including abdominal obesity, hyperglycemia, hypertension, and dyslipidemia. MetS is highly prevalent in individuals with bipolar disorders (BD) with an estimated global rate of 32.6%.

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Introduction: Disturbances in sleep and circadian rhythmicity (CR) are frequent in individuals with bipolar disorders (BD). Very few studies explored the associations between psychotropic medications and these disturbances in euthymic BD. Therefore, we aimed at exploring the associations between several classes of medications (lithium, sedative/non-sedative Atypical Antipsychotics (AAP), anticonvulsants, antidepressants, benzodiazepines) and sleep disturbances and CR dimensions in a sample of euthymic individuals with BD.

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Lithium is the gold standard treatment for bipolar disorder (BD). However, its mechanism of action is incompletely understood, and prediction of treatment outcomes is limited. In our previous multi-omics study of the Pharmacogenomics of Bipolar Disorder (PGBD) sample combining transcriptomic and genomic data, we found that focal adhesion, the extracellular matrix (ECM), and PI3K-Akt signaling networks were associated with response to lithium.

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Bipolar disorders (BD) are characterized by cognitive impairment during the euthymic phase, to which treatments can contribute. The anticholinergic properties of medications, i.e.

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