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Dive into the research topics where Pierre Fossion is active.

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Featured researches published by Pierre Fossion.


The International Journal of Neuropsychopharmacology | 2002

Venlafaxine compared with fluoxetine in outpatients with depression and concomitant anxiety

André De Nayer; Stefaan Geerts; Leo Ruelens; Michel Schittecatte; Eugeen De Bleeker; Ignace Van Eeckhoutte; J. L. Evrard; Paul Linkowski; Pierre Fossion; Sophie Leyman; A. Mignon

The aim of this double-blind study was to compare the efficacy and safety of venlafaxine vs. fluoxetine in the treatment of patients with depression and anxiety. A total of 146 moderately depressed patients with associated anxiety were randomized to receive 75 mg/d venlafaxine or 20 mg/d fluoxetine for 12 wk. Dose increases were permitted after 2 wk of treatment, to 150 mg/d venlafaxine and 40 mg/d fluoxetine, to optimize response. At the final visit, a statistically significantly greater efficacy of venlafaxine over fluoxetine was observed on depressive symptoms and concomitant anxiety, and 75.0 and 50.7% of patients administered venlafaxine and fluoxetine, respectively, showed an overall response. A sustained response (for at least 2 wk), present at the end of the study was achieved in 57.8 and 43.3% of patients in the venlafaxine and fluoxetine groups, respectively, and at the final visit, 59.4 and 40.3% of patients, respectively, were in remission (virtually asymptomatic). Dose increases were required by a greater percentage of patients in the fluoxetine group (52.9%), than in the venlafaxine group (37.1%), and in those patients whose dose was increased, a higher efficacy was again observed with venlafaxine. Venlafaxine and fluoxetine were well tolerated, with the most frequently experienced adverse events being nausea and headache. Fewer patients in the venlafaxine group than in the fluoxetine group reported at least one adverse event (55.7 and 67.1% patients, respectively). Venlafaxine therefore proved to be significantly more effective than fluoxetine in improving depressive symptoms and concomitant anxiety.


European Psychiatry | 2002

Psychiatric disorders and social characteristics among second-generation Moroccan migrants in Belgium: An age–and gender–controlled study conducted in a psychiatric emergency department

Pierre Fossion; Yves Ledoux; F Valente; Laurent Servais; L Staner; Isidore Pelc; Pierre Minner

PURPOSE Clinically, one of the most consistent clinical findings among migrant patients is an increase in the rate of psychosis. The aim of the present study was to confirm this finding in Belgium by comparing second-generation Moroccan migrant patients with Belgian patients, matched for the variables of age and gender. SUBJECTS AND METHOD We conducted a cross-sectional survey on 272 patients admitted in a psychiatric emergency unit during the year 1998. We used univariate and multivariate analyses to compare the two subgroups. RESULTS Multivariate analyses showed that migrant patients lived more often with their parental family and that they presented a higher rate of admission for psychotic disorders and a lower rate of employment. DISCUSSION Our findings add to the growing body of results showing increased incidence of psychosis among immigrants to European countries, but several factors have to be taken into account, particularly with regard to selection biases and differences in help-seeking behaviour and in family perception of the mental illness. CONCLUSION Our results are compatible with the hypothesis that unemployment is a contributing factor in the risk for psychosis among migrant groups. Further studies would be needed to better explain some of our results, particularly the role played by the families of migrant patients.


Journal of Affective Disorders | 2013

Depression, anxiety and loss of resilience after multiple traumas: an illustration of a mediated moderation model of sensitization in a group of children who survived the Nazi Holocaust

Pierre Fossion; Christophe Leys; Chantal Kempenaers; Stephanie Braun; Paul Verbanck; Paul Linkowski

BACKGROUND Depressive and anxiety disorders (DAD) have become a major public health problem. Multiple trauma is known to increase the risk of DAD through a sensitization mechanism. We investigate the hypothesis that resilience is a mediator of this mechanism. METHODS Former Hidden Children (FHC), the Jewish youths who spent World War II in various hideaway shelters across Nazi-occupied Europe, were compared with a control group. In each group, we measured the presence of multiple traumas, the resilience with the Resilience Scale for Adults, which has a six factors solution, and the DAD with the Hopkins Symptoms Checklist. We test a mediated moderation model with childhood trauma as the predictor; Later trauma as the moderator; Resilience as the mediator; and DAD as the outcome variable. RESULTS Results are consistent with a sensitization model of DAD mediated by resilience: confrontation with a primary trauma during childhood followed by secondary trauma(s) after childhood damages resilience, which, in turn, results in higher level of DAD. LIMITATIONS We are unable to differentiate if the sensitization process is a consequence of the nature of the trauma endured by FHC (long-standing exposure to extreme external events) or a consequence of the fact that this first trauma occurred during childhood. CONCLUSIONS Resilience construct is multi-factorial and a limited damaging of some of the factors is sufficient to lead to DAD even if other factors remain unaltered. Resilience can be altered by multiple traumas and, therefore, needs to be bolstered in therapy sessions.


Journal of Affective Disorders | 2015

Transgenerational transmission of trauma in families of Holocaust survivors: The consequences of extreme family functioning on resilience, Sense of Coherence, anxiety and depression

Pierre Fossion; Christophe Leys; Caroline L. Vandeleur; Chantal Kempenaers; Stephanie Braun; Paul Verbanck; Paul Linkowski

BACKGROUND The psychological transmission of the noxious effects of a major trauma from one generation to the next remains unclear. The present study aims to identify possible mechanisms explaining this transmission among families of Holocaust Survivors (HS). We hypothesized that the high level of depressive and anxiety disorders (DAD) among HS impairs family systems, which results in damaging coping strategies of their children (CHS) yielding a higher level of DAD. METHODS 49 CHS completed the Resilience Scale for Adults, the Hopkins Symptom Check List-25, the 13-Item Sense of Coherence (SOC) scale, and the Family Adaptability and Cohesion Scale. We test a mediation model with Family types as the predictor; coping strategies (i.e. Resilience or SOC) as the mediator; and DAD as the outcome variable. RESULTS Results confirm that the CHS׳ family types are more often damaged than in general population. Moreover, growing in a damaged family seems to impede development of coping strategies and, therefore, enhances the occurrence of DAD. LIMITATIONS The present investigation is correlational and should be confirmed by other prospective investigations. CONCLUSIONS At a theoretical level we propose a mechanism of transmission of the noxious effects of a major trauma from one generation to the next through family structure and coping strategies. At a clinical level, our results suggest to investigate the occurrence of trauma among parents of patients consulting for DAD and to reinforce their coping strategies.


Journal of Affective Disorders | 2014

Disentangling Sense of Coherence and Resilience in case of multiple traumas

Pierre Fossion; Christophe Leys; Chantal Kempenaers; Stephanie Braun; Paul Verbanck; Paul Linkowski

BACKGROUND Depressive and anxiety disorders (DAD) are a major public health problem. Trauma endured during childhood is known to increase the risk of DAD in adulthood. We investigate the hypothesis that Sense of Coherence (SOC) is a mediator between childhood trauma and depressive and anxious symptoms (DAD) in adulthood. We also explore the nature (personality trait or aptitude) of SOC and attempt to disentangle the concepts of resilience and SOC. METHOD Former hidden children (FHC), the Jewish youths who spent World War II in various hideaway shelters across Nazi-occupied Europe, were compared with a control group. In each group we measured the presence of multiple traumas, the resilience with the Resilience Scale for Adults, the DAD with the Hopkins Symptoms Checklist and the SOC with the SOC-13 self-report questionnaire. We tested a mediated moderation model with childhood Trauma as the predictor; Adulthood trauma as the moderator; SOC as the mediator; and DAD as the outcome variable. RESULTS Results were consistent with a sensitization model of DAD partially mediated by SOC. A first component of SOC was similar to an aptitude and another part of SOC was more similar to a personality trait. LIMITATIONS We are unable to differentiate if the sensitization process is a consequence of the nature of the trauma endured by FHC (long-standing exposure to extreme external events) or a consequence of the fact that this first trauma occurred during childhood. CONCLUSION Our results could account for the controversial debate regarding the life time stability of SOC.


Aging & Mental Health | 2015

Beware of multiple traumas in PTSD assessment: the role of reactivation mechanism in intrusive and hyper-arousal symptoms

Pierre Fossion; Christophe Leys; Chantal Kempenaers; Stephanie Braun; Paul Verbanck; Paul Linkowski

Objectives: Post-traumatic stress disorder (PTSD) is a major public health problem defined by three symptom clusters: intrusion thoughts, avoidance mechanisms and hyper-arousal. Several authors have emphasized, that some or all of these symptoms related to a past traumatic experience could be reactivated, even after long asymptomatic periods. This study investigates the role of an additional trauma in the reactivation of a childhood trauma among a group of former hidden children (n = 65), the Jewish youths who spent World War II in various hideaway shelters in Nazi-occupied Europe. They were compared with a control group. Method: The presence or absence of an additional trauma in adulthood was assessed and PTSD symptoms were measured by using the Impact of Event Scale-Revised. Results: An additional trauma reactivates PTSD symptoms of intrusion thoughts and, marginally, symptoms of hyper-arousal. At the opposite, symptoms of avoidance were not reactivated. Conclusion: Our results confirm the role of an additional trauma in the reactivation of traumatic memories, related to an earlier trauma, in later life. Clinical and theoretical implications are discussed and perspectives are proposed.


The Journal of Psychology | 2014

Psychological and Socio-Demographic Data Contributing to the Resilience of Holocaust Survivors

Pierre Fossion; Christophe Leys; Chantal Kempenaers; Stephanie Braun; Paul Verbanck; Paul Linkowski

ABSTRACT The authors provide a within-group study of 65 Former Hidden Children (FHC; i.e., Jewish youths who spent World War II in various hideaway shelters across Nazi-occupied Europe) evaluated by the Hopkins Symptom Check List (HSCL), the Sense of Coherence Scale (SOCS), the Resilience Scale for Adults (RSA), and a socio-demographic questionnaire. The aim of the present article is to address the sensitization model of resilience (consisting in a reduction of resistance to additional stress due to previous exposure to trauma) and to identify the family, psychological, and socio-demographic characteristics that predict resilience among a group of FHC. The RSA score is negatively correlated with the number of post-war traumas and positively correlated with the SOCS score. FHC who have children present a higher RSA score than FHC who have no children. RSA global score negatively and significantly predicts HSCL score. In a global multivariate model, and in accordance with the sensitization model, the number of post-war traumas negatively predicts the RSA score. Moreover, the SOCS score and the number of children positively predict it. Therapeutic implications are discussed, limitations are considered, and further investigations are proposed.


Journal of Affective Disorders | 2018

Acceptance alone is a better predictor of psychopathology and well-being than emotional competence, emotion regulation and mindfulness

Ilios Kotsou; Christophe Leys; Pierre Fossion

Emotional competence, emotion regulation, mindfulness and acceptance have all been strongly associated to emotional disorders and psychological well-being in multiple studies. However little research has compared the unique predictive ability of these different constructs. We hypothesised that they will all share a large proportion of common variance and that when compared to the broader constructs emotional competence, emotion regulation and mindfulness, acceptance alone would predict a larger proportion of unique variance METHODS: 228 participants from a community sample completed anonymously measures of anxiety, depression, happiness, acceptance, mindfulness, emotional competence and emotion regulation. We then ran multiple regressions to assess and compare the predictive ability of these different constructs. RESULTS For measures of psychological distress, the acceptance measure uniquely accounted for between 4 and 30 times the variance that the emotional competence, emotion regulation and mindfulness measures did. LIMITATIONS These results are based on cross-sectional designs and non-clinical samples, longitudinal and experimental studies as clinical samples may be useful in order to assess the potential protective power of acceptance over time. Another limitation is the use of self-report questionnaires. CONCLUSIONS Results confirmed our hypothesis, supporting the research on the importance of acceptance as a central factor in the understanding of the onset and maintenance of emotional disorders.


Current Therapeutic Research-clinical and Experimental | 2002

An eight-week, open-label, uncontrolled, multicenter, phase IV study of remission rates in outpatients and inpatients with major depression treated with venlafaxine

Michel Dierick; André De Nayer; M. Ansseau; Hugo D'Haenen; Paul Cosyns; Ward W. Verbruggen; Arlette Seghers; Isidore Pelc; Pierre Fossion; Grigori Stefos; Joseph J. Peuskens; Michel M. Malfroid; Sophie Leyman; A. Mignon

Background: Venlafaxine is a structurally novel antidepressant that is believed to potentiate monoamine activity in the central nervous system. In preclinical studies, venlafaxine was shown to inhibit the neuronal uptake of serotonin and norepinephrine and, to a lesser degree, dopamine reuptake, but was without effect on monoamine oxidase (MAO) activity. Clinical trial results from similar to3000 patients suggest that venlafaxine is a safe and effective antidepressant with the potential to invoke an early onset of clinical activity. Objective: The purpose of this 8-week, open-label, uncontrolled, multi-center, Phase IV study was to examine the extent of remission and symptom relief in outpatients and inpatients with major depressive disorder treated with venlafaxine. Methods: This study was conducted at 12 centers across Belgium and Luxembourg. Consecutive, severely depressed inpatients and moderately depressed outpatients aged 18 to 70 years were eligible. Patients were administered open-label venlafaxine for 8 weeks. Dosing was initiated at venlafaxine 75 mg/d (37.5 mg BID), with dose adjustments made throughout the study, to a maximum daily dose of 375 mg for inpatients and 225 mg for outpatients. Results were measured using the Hamilton Depression (HAM-D) scale, the Montgomery-Asberg Depression Rating Scale (MADRS), and the Clinical Global Impression (CGI) scale. Results: A total of 149 consecutive patients (84 females, 65 males; mean age, 46.5 years; 88 outpatients, 61 inpatients) were enrolled; the intent-to-treat (ITT) population comprised 144 patients (84 outpatients, 60 inpatients); 111 patients (64 outpatients, 47 inpatients) completed the study. At the week 8 visit, 71.3% of patients (77/108) were considered to be responders according to the HAM-D scale; 73.8% (79/107) according to the MADRS; and 78.7% (85/108) according to the CGI scale. A sustained response was achieved in 33.3% of the ITT population (48/144), and at week 8, 50.8% of outpatients (32/63) and 37.8% of inpatients (17/45) were in remission according to the HAM-D scale. Venlafaxine was well tolerated at all doses, with the most frequently experienced adverse events (AEs) being nausea, sweating, and headache. Fewer inpatients than outpatients reported greater than or equal to 1 AE (57.4% [35/61] and 73.9% [65/88], respectively), despite receiving a higher maximum daily dose of venlafaxine. Conclusion: The results of this study indicate that venlafaxine was a tolerable and effective antidepressant in both outpatients and inpatients, with a significant proportion of patients achieving remission.


American Journal of Family Therapy | 2017

The Influence of Family Dynamics On Eating Disorders and Their Consequence On Resilience: A Mediation Model

Christophe Leys; Ilios Kotsou; Marine Goemanne; Pierre Fossion

ABSTRACT The objective of this research is to test a mediation model between family dynamics and eating disorders (ED) through resilience skills. A non-clinical sample of 143 young women (Mage D 19.9 years, SD D 4.2) was recruited. All participants completed three valid questionnaires: The Eating Attitudes Test (EAT 26), the Family Adaptability and Cohesion Scale III (FACES III), and the Resilience Scale for Adults (RSA). The results are consistent with this mediation model: resilience increases with balanced family dynamics. Resilience mediates the link between family dynamics and occurrence of ED.

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Christophe Leys

Université libre de Bruxelles

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Isidore Pelc

Université libre de Bruxelles

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Paul Linkowski

Université libre de Bruxelles

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Paul Verbanck

Université libre de Bruxelles

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Chantal Kempenaers

Université libre de Bruxelles

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Stephanie Braun

Université libre de Bruxelles

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Ilios Kotsou

Université libre de Bruxelles

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Heidi Rolin

Université libre de Bruxelles

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Charles Kornreich

Université libre de Bruxelles

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A. Mignon

Université catholique de Louvain

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