François Vabret - Academia.edu (original) (raw)
Papers by François Vabret
Journal of Clinical Medicine
Alcohol Use Disorder (AUD) results in sleep disturbances that may have deleterious impacts on cog... more Alcohol Use Disorder (AUD) results in sleep disturbances that may have deleterious impacts on cognition, especially on memory. However, little is known about the sleep architecture in patients with Korsakoff’s syndrome (KS). This study aims at characterizing sleep disturbances in KS compared to AUD without KS and at specifying the relationships with cognitive impairments. Twenty-nine AUD patients (22 without KS and 7 with KS) and 15 healthy controls underwent a neuropsychological assessment and a polysomnography. The severity of sleep-disordered breathing and sleep fragmentation was similar in AUD and KS patients compared to controls. Sleep architecture differed between both patient groups: the proportion of slow-wave sleep was reduced in AUD patients only, while a lower proportion of rapid-eye movement (REM) sleep was specifically observed in KS patients. The proportion of REM sleep correlated with the severity of episodic memory deficits when AUD and KS were examined together. The...
Santé publique, Sep 28, 2022
Journal of Neuroscience Research
Chronic and excessive alcohol consumption can result in alcohol use disorder (AUD) without neurol... more Chronic and excessive alcohol consumption can result in alcohol use disorder (AUD) without neurological complications and in Korsakoff's syndrome (KS) when combined with thiamine deficiency. These two clinical forms are accompanied by widespread structural brain damage in both the fronto‐cerebellar (FCC) and Papez circuits (PC) as well as in the parietal cortex, resulting in cognitive and motor deficits. BEARNI is a screening tool especially designed to detect neuropsychological impairments in AUD. However, the sensitivity of this tool to the structural brain damage of AUD and KS patients remains unknown. Eighteen KS patients, 47 AUD patients and 27 healthy controls (HC) underwent the BEARNI test and a 3 T‐MRI examination. Multiple regression analyses conducted between GM density and performance on each BEARNI subtest revealed correlations with regions included in the FCC, PC, thalamus and posterior cortex (precuneus and calcarine regions). All these brain regions were altered i...
Elsevier Masson, Feb 28, 2014
Elsevier Masson, Mar 31, 2016
Alcoholism: Clinical and Experimental Research, 2021
BackgroundThe aim of the present study was to determine whether the Brief Evaluation of Alcohol‐R... more BackgroundThe aim of the present study was to determine whether the Brief Evaluation of Alcohol‐Related Neuropsychological Impairments (BEARNI), a screening tool developed to identify neuropsychological deficits in alcohol use disorder (AUD) patients, can also be used for the early identification of AUD patients at risk of developing Korsakoff’s syndrome (KS).MethodsEighteen KS patients, 47 AUD patients and 27 healthy controls underwent BEARNI testing (including 5 subtests targeting episodic memory, working memory, executive function, visuospatial abilities, and ataxia) and a comprehensive neuropsychological examination.ResultsPerformance of AUD and KS patients on BEARNI subtests was consistent with the results on the standardized neuropsychological assessment. On BEARNI, ataxia and working memory deficits observed in AUD were as severe as those exhibited by KS patients, whereas for visuospatial abilities, a graded effect of performance was found. In contrast, the subtests involving...
NPG Neurologie - Psychiatrie - Gériatrie, 2016
Resume La conscience de soi est sous-tendue par des fonctions cognitives superieures pouvant etre... more Resume La conscience de soi est sous-tendue par des fonctions cognitives superieures pouvant etre affaiblies par un trouble de l’usage de l’alcool (TUAL), notamment chez les personnes âgees, plus vulnerables aux effets toxiques du produit. Les troubles cognitifs et comportementaux induits par la consommation chronique et excessive d’alcool, aujourd’hui clairement definis, peuvent mimer l’apparition de pathologies neurodegeneratives, posant ainsi la question du diagnostic differentiel. Des outils de depistage du TUAL, mais aussi des troubles cognitifs consecutifs a ce TUAL, sont maintenant a disposition des cliniciens. Une adaptation du parcours de soins est necessaire chez une personne âgee presentant un TUAL, notamment en cas d’atteintes cognitives susceptibles d’entraver l’avancee motivationnelle et la prise de conscience de la pathologie.
Alcohol and Alcoholism, 2015
Alcohol and Alcoholism, 2015
Alcohol and Alcoholism, 2015
L'Encéphale, 2016
Alcohol-related cognitive impairments are largely underestimated in clinical practice, even thoug... more Alcohol-related cognitive impairments are largely underestimated in clinical practice, even though they could limit the benefit of alcohol treatment and hamper the patient's ability to remain abstinent or to respect his/her therapeutic contract. These neuropsychological deficits can impact the management of patients well before the development of the well-known Korsakoff's syndrome. Indeed, even in the absence of ostensible neurological complications, excessive and chronic alcohol consumption results in damage of brain structure and function. The frontocerebellar circuit and the circuit of Papez, respectively involved in motor and executive abilities and episodic memory, are mainly affected. Those brain dysfunctions are associated with neuropsychological deficits, including deficits of executive functions, episodic memory, social cognition, as well as visuospatial and motor abilities. Such cognitive disorders can interfere with the motivation process to abandon maladjusted drinking behavior in favor of a healthier lifestyle (such as abstinence or controlled alcohol consumption). They can also limit the patient's capacity to fully benefit from treatment (notably psychoeducation and cognitive-behavioural treatments) currently widely proposed in French Addiction departments. In addition, they may contribute to relapse which is multi-determinated. A neuropsychological assessment appears therefore crucial to take relevant clinical decisions. However, very few addiction departments have the human and financial resources to conduct an extensive neuropsychological examination of all patients with alcohol dependence. Some brief screening tools can be used, notably the MOntreal Cognitive Assessment and the Brief Evaluation of Alcohol-Related Neuropsychological Impairments, which has been especially designed to assess cognitive and motor deficits in alcoholism. These tools can be used by non-psychologist clinicians to detect alcohol-related cognitive deficits, which require an extensive cognitive examination conducted by a neuropsychologist. The presence of cognitive dysfunctions in patients early in abstinence should encourage clinicians to adjust the modalities of the treatment. The fact to favor recovery of cognitive functions and brain volumes with abstinence or drastic reduction of alcohol consumption could be a first way to make it possible for patients to be cognitively able to benefit from treatment. Further studies are required to determine whether specifically designed cognitive remediation could boost (accelerate or increase) the recovery of brain functioning. Additionally, a potential effect of thiamine to limit alcohol-related cognitive deficits before the development of neurological complications remains to be determined. In this review, we presented the pattern of structural brain damage and the associated cognitive and motor impairments in alcohol-dependent patients. We then emphasized the harmful effects of neuropsychological deficits in the management of these patients. We also pointed how relevant it is to screen patients with neuropsychological impairments and we focused on the presentation of two brief screening tools for cognitive impairments, especially designed for alcohol-related deficits or not. Finally, we reported how these neuropsychological impairments could be taken into consideration the treatment of alcohol addiction by adjusting its timing and modalities.
European Psychiatry, 2015
Les déficits neuropsychologiques consécutifs à l’alcoolo-dépendance affectent principalement la m... more Les déficits neuropsychologiques consécutifs à l’alcoolo-dépendance affectent principalement la mémoire épisodique, la mémoire de travail et les capacités visuospatiales, ainsi que les fonctions exécutives et motrices [1,2]. Ces déficits présents notamment en début de sevrage peuvent conduire à un bénéfice limité des ateliers psychothérapeutiques et entraver le maintien de l’abstinence des patients alcoolo-dépendants [3,4]. Ainsi, une évaluation neuropsychologique étendue conduite après sevrage semble essentielle afin d’orienter la prise en charge clinique de ces patients. Cependant, peu de services d’addictologie ont les ressources humaines et financières pour conduire une telle évaluation chez chaque patient. L’objectif de cette étude était donc d’examiner la validité et les qualités psychométriques d’un outil de dépistage : le BEARNI (pour Brief Examination of Alcohol-Related Neuropsychological Impairments). Cet outil a été spécialement développé pour être accessible au personnel...
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, Jan 14, 2015
Alcoholism is associated with widespread brain structural abnormalities affecting mainly the fron... more Alcoholism is associated with widespread brain structural abnormalities affecting mainly the frontocerebellar and the Papez's circuits. Brain glucose metabolism has received limited attention, and few studies used regions of interest approach and showed reduced global brain metabolism predominantly in the frontal and parietal lobes. Even though these studies have examined the relationship between grey matter shrinkage and hypometabolism, none has performed a direct voxel-by-voxel comparison between the degrees of structural and metabolic abnormalities. Seventeen alcoholic patients and 16 control subjects underwent both structural magnetic resonance imaging and (18)F-2-fluoro-deoxy-glucose-positron emission tomography examinations. Structural abnormalities and hypometabolism were examined in alcoholic patients compared with control subjects using two-sample t-tests. Then, these two patterns of brain damage were directly compared with a paired t-test. Compared to controls, alcohol...
Revue de neuropsychologie, 2013
Revue de neuropsychologie, 2013
Psychological Medicine, 2009
BackgroundPrevious findings revealed that the acquisition of new semantic concepts' labels wa... more BackgroundPrevious findings revealed that the acquisition of new semantic concepts' labels was impaired in uncomplicated alcoholic patients. The use of errorless learning may therefore allow them to improve learning performance. However, the flexibility of the new knowledge and the memory processes involved in errorless learning remain unclear.MethodNew concepts' labels acquisition was examined in 15 alcoholic patients and 15 control participants in an errorless learning condition compared with 19 alcoholic patients and 19 control subjects in a trial-and-error learning condition. The flexibility of the new information was evaluated using different photographs from those used in the learning sessions but representing the same concepts. All of the participants carried out an additional explicit memory task and an implicit memory task was also performed by subjects in the errorless learning condition.ResultsThe alcoholic group in the errorless condition differed significantly f...
Psychiatry Research: Neuroimaging, 2013
High motivation to change is a crucial triggering factor to patients&... more High motivation to change is a crucial triggering factor to patients' engagement in clinical treatment. This study investigates whether the low readiness to change observed in some alcoholic inpatients at treatment entry could, at least partially, be linked with macrostructural gray matter abnormalities in critical brain regions. Participants comprised 31 alcoholic patients and 27 controls, who underwent 1.5-T magnetic resonance imaging. The Readiness to Change Questionnaire, designed to assess three stages of motivation to change (precontemplation, contemplation and action stages), was completed by all patients, who were then divided into "Action" (i.e., patients in action stage) and "PreAction" (i.e., patients in precontemplation or in contemplation stage) subgroups. The PreAction subgroup, but not the Action subgroup, had gray matter volume deficits compared with controls. Unlike the patients in the Action subgroup, the PreAction patients had gray matter abnormalities in the cerebellum (Crus I), fusiform gyri and frontal cortex. The low level of motivation to modify drinking behavior observed in some alcoholic patients at treatment entry may be related to macrostructural brain abnormalities in regions subtending cognitive, emotional and social abilities. These brain volume deficits may result in impairment of critical abilities such as decision making, executive functions and social cognition skills. Those abilities may be needed to resolve ambivalence toward alcohol addiction and to apply "processes of change", which are essential for activating the desire to change problematic behavior.
Journal of Clinical Medicine
Alcohol Use Disorder (AUD) results in sleep disturbances that may have deleterious impacts on cog... more Alcohol Use Disorder (AUD) results in sleep disturbances that may have deleterious impacts on cognition, especially on memory. However, little is known about the sleep architecture in patients with Korsakoff’s syndrome (KS). This study aims at characterizing sleep disturbances in KS compared to AUD without KS and at specifying the relationships with cognitive impairments. Twenty-nine AUD patients (22 without KS and 7 with KS) and 15 healthy controls underwent a neuropsychological assessment and a polysomnography. The severity of sleep-disordered breathing and sleep fragmentation was similar in AUD and KS patients compared to controls. Sleep architecture differed between both patient groups: the proportion of slow-wave sleep was reduced in AUD patients only, while a lower proportion of rapid-eye movement (REM) sleep was specifically observed in KS patients. The proportion of REM sleep correlated with the severity of episodic memory deficits when AUD and KS were examined together. The...
Santé publique, Sep 28, 2022
Journal of Neuroscience Research
Chronic and excessive alcohol consumption can result in alcohol use disorder (AUD) without neurol... more Chronic and excessive alcohol consumption can result in alcohol use disorder (AUD) without neurological complications and in Korsakoff's syndrome (KS) when combined with thiamine deficiency. These two clinical forms are accompanied by widespread structural brain damage in both the fronto‐cerebellar (FCC) and Papez circuits (PC) as well as in the parietal cortex, resulting in cognitive and motor deficits. BEARNI is a screening tool especially designed to detect neuropsychological impairments in AUD. However, the sensitivity of this tool to the structural brain damage of AUD and KS patients remains unknown. Eighteen KS patients, 47 AUD patients and 27 healthy controls (HC) underwent the BEARNI test and a 3 T‐MRI examination. Multiple regression analyses conducted between GM density and performance on each BEARNI subtest revealed correlations with regions included in the FCC, PC, thalamus and posterior cortex (precuneus and calcarine regions). All these brain regions were altered i...
Elsevier Masson, Feb 28, 2014
Elsevier Masson, Mar 31, 2016
Alcoholism: Clinical and Experimental Research, 2021
BackgroundThe aim of the present study was to determine whether the Brief Evaluation of Alcohol‐R... more BackgroundThe aim of the present study was to determine whether the Brief Evaluation of Alcohol‐Related Neuropsychological Impairments (BEARNI), a screening tool developed to identify neuropsychological deficits in alcohol use disorder (AUD) patients, can also be used for the early identification of AUD patients at risk of developing Korsakoff’s syndrome (KS).MethodsEighteen KS patients, 47 AUD patients and 27 healthy controls underwent BEARNI testing (including 5 subtests targeting episodic memory, working memory, executive function, visuospatial abilities, and ataxia) and a comprehensive neuropsychological examination.ResultsPerformance of AUD and KS patients on BEARNI subtests was consistent with the results on the standardized neuropsychological assessment. On BEARNI, ataxia and working memory deficits observed in AUD were as severe as those exhibited by KS patients, whereas for visuospatial abilities, a graded effect of performance was found. In contrast, the subtests involving...
NPG Neurologie - Psychiatrie - Gériatrie, 2016
Resume La conscience de soi est sous-tendue par des fonctions cognitives superieures pouvant etre... more Resume La conscience de soi est sous-tendue par des fonctions cognitives superieures pouvant etre affaiblies par un trouble de l’usage de l’alcool (TUAL), notamment chez les personnes âgees, plus vulnerables aux effets toxiques du produit. Les troubles cognitifs et comportementaux induits par la consommation chronique et excessive d’alcool, aujourd’hui clairement definis, peuvent mimer l’apparition de pathologies neurodegeneratives, posant ainsi la question du diagnostic differentiel. Des outils de depistage du TUAL, mais aussi des troubles cognitifs consecutifs a ce TUAL, sont maintenant a disposition des cliniciens. Une adaptation du parcours de soins est necessaire chez une personne âgee presentant un TUAL, notamment en cas d’atteintes cognitives susceptibles d’entraver l’avancee motivationnelle et la prise de conscience de la pathologie.
Alcohol and Alcoholism, 2015
Alcohol and Alcoholism, 2015
Alcohol and Alcoholism, 2015
L'Encéphale, 2016
Alcohol-related cognitive impairments are largely underestimated in clinical practice, even thoug... more Alcohol-related cognitive impairments are largely underestimated in clinical practice, even though they could limit the benefit of alcohol treatment and hamper the patient's ability to remain abstinent or to respect his/her therapeutic contract. These neuropsychological deficits can impact the management of patients well before the development of the well-known Korsakoff's syndrome. Indeed, even in the absence of ostensible neurological complications, excessive and chronic alcohol consumption results in damage of brain structure and function. The frontocerebellar circuit and the circuit of Papez, respectively involved in motor and executive abilities and episodic memory, are mainly affected. Those brain dysfunctions are associated with neuropsychological deficits, including deficits of executive functions, episodic memory, social cognition, as well as visuospatial and motor abilities. Such cognitive disorders can interfere with the motivation process to abandon maladjusted drinking behavior in favor of a healthier lifestyle (such as abstinence or controlled alcohol consumption). They can also limit the patient's capacity to fully benefit from treatment (notably psychoeducation and cognitive-behavioural treatments) currently widely proposed in French Addiction departments. In addition, they may contribute to relapse which is multi-determinated. A neuropsychological assessment appears therefore crucial to take relevant clinical decisions. However, very few addiction departments have the human and financial resources to conduct an extensive neuropsychological examination of all patients with alcohol dependence. Some brief screening tools can be used, notably the MOntreal Cognitive Assessment and the Brief Evaluation of Alcohol-Related Neuropsychological Impairments, which has been especially designed to assess cognitive and motor deficits in alcoholism. These tools can be used by non-psychologist clinicians to detect alcohol-related cognitive deficits, which require an extensive cognitive examination conducted by a neuropsychologist. The presence of cognitive dysfunctions in patients early in abstinence should encourage clinicians to adjust the modalities of the treatment. The fact to favor recovery of cognitive functions and brain volumes with abstinence or drastic reduction of alcohol consumption could be a first way to make it possible for patients to be cognitively able to benefit from treatment. Further studies are required to determine whether specifically designed cognitive remediation could boost (accelerate or increase) the recovery of brain functioning. Additionally, a potential effect of thiamine to limit alcohol-related cognitive deficits before the development of neurological complications remains to be determined. In this review, we presented the pattern of structural brain damage and the associated cognitive and motor impairments in alcohol-dependent patients. We then emphasized the harmful effects of neuropsychological deficits in the management of these patients. We also pointed how relevant it is to screen patients with neuropsychological impairments and we focused on the presentation of two brief screening tools for cognitive impairments, especially designed for alcohol-related deficits or not. Finally, we reported how these neuropsychological impairments could be taken into consideration the treatment of alcohol addiction by adjusting its timing and modalities.
European Psychiatry, 2015
Les déficits neuropsychologiques consécutifs à l’alcoolo-dépendance affectent principalement la m... more Les déficits neuropsychologiques consécutifs à l’alcoolo-dépendance affectent principalement la mémoire épisodique, la mémoire de travail et les capacités visuospatiales, ainsi que les fonctions exécutives et motrices [1,2]. Ces déficits présents notamment en début de sevrage peuvent conduire à un bénéfice limité des ateliers psychothérapeutiques et entraver le maintien de l’abstinence des patients alcoolo-dépendants [3,4]. Ainsi, une évaluation neuropsychologique étendue conduite après sevrage semble essentielle afin d’orienter la prise en charge clinique de ces patients. Cependant, peu de services d’addictologie ont les ressources humaines et financières pour conduire une telle évaluation chez chaque patient. L’objectif de cette étude était donc d’examiner la validité et les qualités psychométriques d’un outil de dépistage : le BEARNI (pour Brief Examination of Alcohol-Related Neuropsychological Impairments). Cet outil a été spécialement développé pour être accessible au personnel...
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, Jan 14, 2015
Alcoholism is associated with widespread brain structural abnormalities affecting mainly the fron... more Alcoholism is associated with widespread brain structural abnormalities affecting mainly the frontocerebellar and the Papez's circuits. Brain glucose metabolism has received limited attention, and few studies used regions of interest approach and showed reduced global brain metabolism predominantly in the frontal and parietal lobes. Even though these studies have examined the relationship between grey matter shrinkage and hypometabolism, none has performed a direct voxel-by-voxel comparison between the degrees of structural and metabolic abnormalities. Seventeen alcoholic patients and 16 control subjects underwent both structural magnetic resonance imaging and (18)F-2-fluoro-deoxy-glucose-positron emission tomography examinations. Structural abnormalities and hypometabolism were examined in alcoholic patients compared with control subjects using two-sample t-tests. Then, these two patterns of brain damage were directly compared with a paired t-test. Compared to controls, alcohol...
Revue de neuropsychologie, 2013
Revue de neuropsychologie, 2013
Psychological Medicine, 2009
BackgroundPrevious findings revealed that the acquisition of new semantic concepts' labels wa... more BackgroundPrevious findings revealed that the acquisition of new semantic concepts' labels was impaired in uncomplicated alcoholic patients. The use of errorless learning may therefore allow them to improve learning performance. However, the flexibility of the new knowledge and the memory processes involved in errorless learning remain unclear.MethodNew concepts' labels acquisition was examined in 15 alcoholic patients and 15 control participants in an errorless learning condition compared with 19 alcoholic patients and 19 control subjects in a trial-and-error learning condition. The flexibility of the new information was evaluated using different photographs from those used in the learning sessions but representing the same concepts. All of the participants carried out an additional explicit memory task and an implicit memory task was also performed by subjects in the errorless learning condition.ResultsThe alcoholic group in the errorless condition differed significantly f...
Psychiatry Research: Neuroimaging, 2013
High motivation to change is a crucial triggering factor to patients&... more High motivation to change is a crucial triggering factor to patients' engagement in clinical treatment. This study investigates whether the low readiness to change observed in some alcoholic inpatients at treatment entry could, at least partially, be linked with macrostructural gray matter abnormalities in critical brain regions. Participants comprised 31 alcoholic patients and 27 controls, who underwent 1.5-T magnetic resonance imaging. The Readiness to Change Questionnaire, designed to assess three stages of motivation to change (precontemplation, contemplation and action stages), was completed by all patients, who were then divided into "Action" (i.e., patients in action stage) and "PreAction" (i.e., patients in precontemplation or in contemplation stage) subgroups. The PreAction subgroup, but not the Action subgroup, had gray matter volume deficits compared with controls. Unlike the patients in the Action subgroup, the PreAction patients had gray matter abnormalities in the cerebellum (Crus I), fusiform gyri and frontal cortex. The low level of motivation to modify drinking behavior observed in some alcoholic patients at treatment entry may be related to macrostructural brain abnormalities in regions subtending cognitive, emotional and social abilities. These brain volume deficits may result in impairment of critical abilities such as decision making, executive functions and social cognition skills. Those abilities may be needed to resolve ambivalence toward alcohol addiction and to apply "processes of change", which are essential for activating the desire to change problematic behavior.
Alcohol-related neuropsychological impairments mainly affect episodic memory, working memory and ... more Alcohol-related neuropsychological impairments mainly affect episodic memory, working memory and visuospatial abilities, as well as executive and motor functioning. These impairments can prevent alcoholic patients early in abstinence from benefiting fully from treatment, and reduce their ability to remain abstinent. A neuropsychological assessment at alcohol treatment entry therefore seems essential for making the relevant clinical decisions. However, very few alcohol treatment departments have the financial and human resources needed to conduct an extensive neuropsychological examination of each alcoholic patient. The goal of the present study was therefore to assess the validity and the psychometric properties of the Brief Evaluation of Alcohol-Related Neuropsychological Impairments (BEARNI), a new screening tool especially designed to assess patients at alcohol treatment entry.
A total of 254 healthy controls completed the BEARNI, and 58 of them also performed an extensive neuropsychological battery. 73 alcoholic patients underwent both the BEARNI and the neuropsychological battery. This extensive neuropsychological battery of proven classification accuracy served as the reference (i.e., gold standard) for determining the alcoholic patient cognitive status.
An exploratory factor analysis validated the BEARNI’s underlying structure, highlighting five factors that reflected visuospatial abilities, executive functions, ataxia, verbal episodic memory and verbal working memory. The standardization of each BEARNI subtest and the two total scores revealed that this test has sufficient diagnostic accuracy for the detection of alcoholic patients with cognitive and motor impairments.
The present study indicates that the BEARNI is a useful screening tool in clinical settings for detecting alcoholic motor and cognitive impairments at treatment entry.