GPGeraldine Petit

Geraldine Petit

*This is an algorithmically generated author record based on publicly available information.

Current Organizations / Institutes

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Previous Organizations / Institutes

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Geraldine Petit has a total of 55 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Early abstinence in severe alcohol use disorder: MCP-1 decline, choroid plexus shrinkage, and region-specific grey-matter volume changes

    by Géraldine Petit, Mohamed Kotb Selim, Santiago Canals, Peter Stärkel, Laurence Dricot, Marie Poncin, Sophie Leclercq, Philippe De Timary

    In this longitudinal study, 37 patients with severe alcohol use disorder (SAUD) were tested at the beginning (T1) and end (T2) of supervised detoxification to explore the evolution of and relationship between systemic inflammation, volumetric changes for brain grey matter (GM) and choroid plexus (ChP), and clinical symptoms. At T1, patients exhibited high levels of anxiety, depression, and craving, and had elevated plasmatic pro-inflammatory cytokines, indicating low-grade systemic inflammation. Monocyte chemoattractant protein-1 (CCL2) (MCP-1) levels correlated positively with ChP volume and severity of withdrawal symptoms, while macrophage inflammatory protein-1 beta (CCL4) (MIP-1β) also correlated with ChP volume, together suggesting an acute immune response at T1, and underscoring the ChP as a potential neuroimmune biomarker to be further evaluated in future studies. During three weeks' abstinence, Interleukin-8 (IL-8), MIP-1β, and MCP-1 levels decreased, although MIP-1β did not return to control levels, and tumor necrosis factor-alpha (TNF-α) showed no significant reduction. Volumetric MRI analyses suggested two concurrent trajectories during detoxification. First, an overall "recovery-driven" pattern of rapidly increasing GM volume in widespread forebrain regions with parallel declines in ventricle size and craving. Second, GM in limbic cortical areas, temporal and inferior frontal cortex showed no significant volumetric gain. However, these regional volumes correlated significantly with declining MCP-1, indicative of a "deflation", potentially related to declining microglial activation. These findings highlight the role of inflammatory processes in shaping early neuroplastic changes during detoxification and point to a central role of MCP-1 in inflammation-driven morphometric changes.

  • Open Access

    Early abstinence in severe alcohol use disorder: MCP-1 decline, choroid plexus shrinkage, and region-specific grey-matter volume changes

    by Geraldine Petit, Selim Mohamed Kotb, Santiago Canals, Peter Starkel, Laurence Dricot, Marie Poncin, Sophie Leclercq, Philippe de Timary

    In this longitudinal study, 37 patients with severe alcohol use disorder (SAUD) were tested at the beginning (T1) and end (T2) of withdrawal to explore the evolution of and relationship between systemic inflammation, volumetric changes for brain grey matter (GM) and choroid plexus (ChP), and clinical symptoms. At T1, patients exhibited high levels of anxiety, depression, and craving, and had elevated plasmatic pro-inflammatory cytokines, indicating low-grade systemic inflammation. MCP-1 levels correlated positively with ChP volume and severity of withdrawal symptoms, while MIP-1β also correlated with ChP volume, together suggesting an acute immune response at T1, and underscoring the ChP as a potential neuroimmune biomarker. During three weeks’ abstinence, IL-8, MIP-1β, and MCP-1 levels decreased, although MIP-1β did not return to control levels, and TNF-α showed no significant reduction. Volumetric MRI analyses suggested two concurrent trajectories during withdrawal. First, an overall “recovery‐driven” pattern of rapidly increasing grey matter (GM) volume in widespread forebrain regions with parallel declines in ventricle size and craving. Second, GM in limbic cortical areas, temporal and inferior frontal cortex showed no significant volumetric gain. However, these regional volumes correlated significantly with declining MCP‐1, indicative of a “deflation”, potentially related to declining microglial activation. These findings highlight the role of inflammatory processes in shaping early neuroplastic changes during withdrawal and point to a central role of MCP‐1 in inflammation-driven morphometric changes.

  • Open Access

    Psychometric Properties of the Multidimensional Assessment of Covid-19-Related Fears (MAC-RF) in French-Speaking Healthcare Professionals and Community Adults

    by Gianluca Santoro, Joël Billieux, Vladan Starcevic, Yasser Khazaal, Alessandro Giardina, Maèva Flayelle, Alexandre Infanti, Laurent Karila, Géraldine Petit, Philippe de Timary, et al.

    The Multidimensional Assessment of COVID-19-Related Fears (MAC-RF) is an 8-item self-report measure, which is based on the theoretical premise that fear responses to COVID-19 involve different yet intertwined domains (i.e., bodily, relational, cognitive, and behavioural). In this multi-step study, we tested the psychometric properties of the French version of the MAC-RF and examined the reciprocal relationships among COVID-19-related fears. Data were collected in two French-speaking samples (N = 521 individuals from the community and N = 328 healthcare professionals). Internal reliability, convergent validity, construct validity, and internal structure of the MAC-RF were tested. The French version of the MAC-RF demonstrated good psychometric properties and a two-factor structure, with bodily and relational fears tapping into the first factor, and cognitive and behavioural fears tapping into the second factor. Healthcare professionals reported greater COVID-19-related fears than community participants. Correlation network analysis showed that fear for one’s own body and fear of taking action might increase the risk of experiencing other COVID-19-related fears. Limitations comprised the cross-sectional design of the study, risk of bias associated with self-report instruments, and use of online surveys. A careful assessment of different types of fear related to COVID-19 may have implications for prevention and clinical practice during the current coronavirus pandemic. The French version of the MAC-RF is valid and reliable and can thus be used for this purpose.


  • Open Access

    Links between psychopathological symptoms and cortical thickness in men with severe alcohol use disorder: A Magnetic Resonance Imaging study

    by Géraldine Petit, Sophie Leclercq, Caroline Quoilin, Marie Poncin, Peter Starkel, Pierre Maurage, Benjamin Rolland, Laurence Dricot, Philippe De Timary

    BackgroundAnxiety and depression are psychopathological states frequently co-occurring with severe alcohol use disorder (SAUD). These symptoms generally disappear with abstinence but may persist in some patients, increasing the relapse risk.MethodsThe cerebral cortex thickness of 94 male patients with SAUD was correlated with symptoms of depression and anxiety, both measured at the end (2-3 weeks) of the detoxification treatment. Cortical measures were obtained using surface-based morphometry implemented with Freesurfer.ResultsDepressive symptoms were associated with reduced cortical thickness in the superior temporal gyrus of the right hemisphere. Anxiety level was correlated with lower cortical thickness in the rostral middle frontal region, inferior temporal region, and supramarginal, postcentral, superior temporal, and transverse temporal regions of the left hemisphere, as well as with a large cluster in the middle temporal region of the right hemisphere.ConclusionsAt the end of the detoxification stage, the intensity of depressive and anxiety symptoms is inversely associated with the cortical thickness of regions involved in emotions-related processes, and the persistence of the symptoms could be explained by these brain deficits.

  • Open Access

    Case study: Developing a strategy combining human and empirical interventions to support the resilience of healthcare workers exposed to a pandemic in an academic hospital

    by Emilie Banse, Geraldine Petit, Geneviève Cool, Joëlle Durbecq, Isabelle Hennequin, Yasser Khazaal, Philippe de Timary

    The COVID-19 pandemic has put healthcare workers under important psychological pressure. Concerns have been raised regarding the mental health and psychological status of healthcare workers and have underlined the need for institutions to develop long-term interventions to support their resilience. The current case study presents the way a large university hospital in Brussels, Belgium, has evolved to deal with this health crisis and support its workers. Initiatives were multiple and complementary, as it was decided to combine different forms of clinical interventions that were developed by psychologists, psychiatrists, and human resources, to an empirical approach including a large survey that permitted to reach a much larger audience (the results of the study have been published previously). We describe the initially proposed measures of psychological support, including the creation of a telephone hotline, the presence of psychologists among teams of dedicated COVID-19 units, discussion groups, and individualized follow-ups, and their consequences on healthcare workers. Second, we address how these initial measures of support were modified to tailor in the best way possible the needs of healthcare workers, using a research action project that used a survey to measure and address the psychological distress of healthcare workers. We explain how, through different objectives (screening of distress, adaptation of initial measures based on reported needs, active reinforcement of individual and collective resilience, reminder of availability of help, and normalization of distress), a research action project can be a form of support and is an effective way for an institution to show its pre-occupation for the mental health of its teams. The current case study highlights how an institution can provide support and the importance of the use of a combined strategy to limit the consequences of a major health crisis on the mental health of its healthcare workers. Improving the resilience of healthcare workers both in the short and long term is of the essence to maintain optimal care of patients.


  • Open Access

    DRUG ADHERENCE AND PSYCHOLOGICAL FACTORS MATTER IN PATIENTS WITH RESISTANT HYPERTENSION - YES BUT WHICH ONES?

    by Marco Pappaccogli, Coralie Mg Georges, Geraldine Petit, Sabrina Ritscher, Marilucy Lopez-Sublet, Elvira Fanelli, Franco Rabbia, Pierre Wallemacq, Philippe De Timary, Stefan W. Toennes, et al.

    Objective: Altered psychological profiles are associated with drug adherence and drug resistance in patients with resistant hypertension (RHTN). However, treatment resistance may also result from increased arterial stiffness and target organ damage. The aim of this study was to assess the association of psychological factors with both drug adherence and drug resistance in two subtypes of patients with RHTN: younger patients without cardiovascular complications versus older or vascular patients. Design and method: Ninety-seven patients with RHTN were enrolled and split in two groups: patients 60y or older or with previous cardiovascular diseases (VRHTN), and younger patients without cardiovascular complications (NVRHTN). Drug adherence was assessed by urinary Liquid Chromatography coupled with tandem Mass Spectrometry. Drug resistance was evaluated by 24-hour ambulatory blood pressure adjusted for the number of antihypertensive drugs and drug adherence. Psychological profile was assessed using five validated questionnaires: the Brief Symptom Inventory (BSI), the Toronto Alexithymia Scale (TAS-20), the Emotion Regulation Questionnaire (ERQ), the Cognitive Emotion Regulation Questionnaire (CERQ) and the Post Traumatic Diagnostic Scale (PDS). Results: The proportion of fully adherent, partly adherent, and totally non-adherent patients was significantly different between NVRHTN (37, 39 and 24%) and VRHTN (67, 26 and 7 %) respectively (p-value = 0.010). After multiple regression analysis, independent predictors of poor drug adherence in NVRHTN were “adaptive strategies’’, male gender and family history of hypertension, accounting for 39.2% of the variability. Independent predictors of drug resistance were difficulties in planification and somatization, accounting for 39.0% of the variability. In the VRHTN group, predictors of drug adherence were yearly number of visits at the emergency department for hypertension and family history of cardiovascular events, accounting for 28.1% of the variability in drug adherence. Predictors of drug resistance were the number of visits at the emergency department and the total number of drugs prescribed per day, accounting for 35.0% of the variability in drug resistance. Conclusions: Poor drug adherence and altered psychological profiles appear to play a major role in younger patients with RHTN without cardiovascular complications. This subset of patients should be prioritized for assessment of drug adherence and psychological evaluation.

  • Open Access

    Psychological distress among hospital caregivers during and after the first wave of COVID-19: Individual factors involved in the severity of symptoms expression

    by Benoit Mennicken, Geraldine Petit, Jean-Cyr Yombi, Leila Belkhir, Gerald Deschietere, Nausica Germeau, Melissa Salavrakos, Gilles Moreau, Laurie Nizet, Geneviève Cool, et al.


  • Open Access

    Differential spontaneous recovery across cognitive abilities during detoxification period in alcohol-dependence

    by Géraldine Petit, Olivier Luminet, Mariana Cordovil De Sousa Uva, Alexis Zorbas, Pierre Maurage, Philippe De Timary

    There is a lack of consensus regarding the extent to which cognitive dysfunctions may recover upon cessation of alcohol intake by alcohol-dependents (AD), and the divergent findings are most likely due to methodological differences between the various studies. The present study was aimed at conducting a very strict longitudinal study of cognitive recovery in terms of assessment points, the duration of abstinence, control of age and duration of the addiction, and by use of individual analyses in addition to mean group comparisons. Our study further focused on the 2–3 week phase of alcohol detoxification that is already known to positively affect many biological, emotional, motivational, as well as neural variables, followed by longer-term therapies for which good cognitive functioning is needed. 41 AD inpatients undergoing a detoxification program, and 41 matched controls, were evaluated twice in terms of five cognitive functions (i.e., short-term memory, working memory, inhibition, cognitive flexibility, and verbal fluency) within a three-week interval [on the first day (T1) and the 18th day (T2) of abstinence for AD patients]. Emotional (positive and negative affectivity and depression) and motivational (craving) variables were also measured at both evaluation times. Although verbal fluency, short-term memory, and cognitive flexibility did not appear to be affected, the patients exhibited impaired inhibition and working memory at T1. While no recovery of inhibition was found to occur, the average working memory performance of the patients was comparable to that of the controls at T2. Improvements in emotional and motivational dimensions were also observed, although they did not correlate with the ones in working memory. Individual analysis showed that not all participants were impaired or recover the same functions. While inhibition deficits appear to persist after 18 days of detoxification, deficits in working memory, which is a central component of cognition, are greatly reduced after alcohol detoxification. Individual differences in the trajectory of recovery do arise however, and it might be worth implementing individual assessments of impaired functions at the end of the detoxification phase in order to maximize the chances of success in longer-term treatments and abstinence.