Florence Askenazy-Gittard

Florence Askenazy-Gittard


Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2014 in Molecular Autism
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SSSylvie Serret
Sylvie Serret
SHStephanie Hun
Stephanie Hun
GIGalina Iakimova
Galina Iakimova
JLJose Lozada
Jose Lozada
MAMargarita Anastassova
Margarita Anastassova
FAFlorence Askenazy-Gittard
Florence Askenazy-Gittard
It is widely accepted that emotion processing difficulties are involved in Autism Spectrum Conditions (ASC). An increasing number of studies have focused on the development of training programs and have shown promising results. However, most of these programs are appropriate for individuals with high-functioning ASC (HFA) but exclude individuals with low-functioning ASC (LFA). We have developed a computer-based game called JeStiMulE based on logical skills to teach emotions to individuals with ASC, independently of their age, intellectual, verbal and academic level.

7 May 2015 in BMC Psychiatry
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SSSylvie Serret
Sylvie Serret
STSusanne Thümmler
Susanne Thümmler
EDEmmanuelle Dor
Emmanuelle Dor
SVStephanie Vesperini
Stephanie Vesperini
ASAndreia Santos
Andreia Santos
FAFlorence Askenazy-Gittard
Florence Askenazy-Gittard
Phelan-Mc Dermid syndrome is a contiguous disorder resulting from 22q13.3 deletion implicating the SHANK3 gene. The typical phenotype includes neonatal hypotonia, moderate to severe intellectual disability, absent or delayed speech, minor dysmorphic features and autism or autistic-like behaviour. Recently, point mutations or micro-deletions of the SHANK3 gene have been identified, accompanied by a phenotype different from the initial clinically description in Phelan McDermid syndrome. Here we present two case studies with similar psychiatric and genetic diagnosis as well as similar clinical history and evolution. The two patients were diagnosed with autism spectrum disorders in childhood and presented regression with catatonia features and behavioural disorders after a stressful event during adolescence. Interestingly, both patients presented mutation/microdeletion of the SHANK3 gene, inducing a premature stop codon in exon 21. Different pharmacological treatments (antipsychotics, benzodiazepines, mood stabilizer drugs, antidepressants, and methylphenidate) failed to improve clinical symptoms and lead to multiple adverse events. In contrast, lithium therapy reversed clinical regression, stabilized behavioural symptoms and allowed patients to recover their pre-catatonia level of functioning, without significant side effects. These cases support the hypothesis of a specific SHANK3 phenotype. This phenotype might be linked to catatonia-like deterioration for which lithium use could be an efficient treatment. Therefore, these cases provide an important contribution to the field of autism research, clinical genetics and possible pharmacological answers.

18 December 2019 in Frontiers in Genetics
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AFarnaud fernandez
arnaud fernandez
MDMalgorzata Marta Drozd
Malgorzata Marta Drozd
STSusanne Thümmler
Susanne Thümmler
EDEmmanuelle Dor
Emmanuelle Dor
MCMaria Capovilla
Maria Capovilla
Barbara BardoniBarbara Bardoni
Barbara Bardoni
Childhood-onset schizophrenia (COS), a very rare and severe chronic psychiatric condition, is defined by an onset of positive symptoms (delusions, hallucinations and disorganized speech or behavior) before the age of 13. COS is associated with other neurodevelopmental disorders such as autism spectrum disorder (ASD) and attention deficit and hyperactivity disorder. Copy number variations (CNVs) represent well documented neurodevelopmental disorder risk factors and, recently, de novo single nucleotide variations (SNVs) in genes involved in brain development have also been implicated in the complex genetic architecture of COS. Here, we aim to review the genetic changes (CNVs and SNVs) reported for COS, going from previous studies to the whole genome sequencing era. We carried out a systematic review search in PubMed using the keywords “childhood(early)-onset schizophrenia(psychosis)” and “genetic(s) or gene(s) or genomic(s)” without language and date limitations. The main inclusion criteria are COS (onset before 13 years old) and all changes/variations at the DNA level (CNVs or SNVs). Thirty-six studies out of 205 met the inclusion criteria. Cytogenetic abnormalities (n = 72, including 66 CNVs) were identified in 16 autosomes and 2 sex chromosomes (X, Y), some with a higher frequency and clinical significance than others (e.g., 2p16.3, 3q29, 15q13.3, 22q11.21 deletions; 2p25.3, 3p25.3 and 16p11.2 duplications). Thirty-one single nucleotide mutations in genes principally involved in brain development and/or function have been found in 12 autosomes and one sex chromosome (X). We also describe five SNVs in X-linked genes inherited from a healthy mother, arguing for the X-linked recessive inheritance hypothesis. Moreover, ATP1A3 (19q13.2) is the only gene carrying more than one SNV in more than one patient, making it a strong candidate for COS. Mutations were distributed in various chromosomes illustrating the genetic heterogeneity of COS. More than 90% of CNVs involved in COS are also involved in ASD, supporting the idea that there may be genetic overlap between these disorders. Different mutations associated with COS are probably still unknown, and pathogenesis might also be explained by the association of different genetic variations (two or more CNVs or CNVs and SNVs) as well as association with early acquired brain lesions such as infection, hypoxia, or early childhood trauma.

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CVClair VANDERSTEEN
Clair VANDERSTEEN
MPMagali Payne
Magali Payne
LDLouise-Émilie Dumas
Louise-Émilie Dumas
ÉCÉlisa Cancian
Élisa Cancian
APAlexandra Plonka
Alexandra Plonka
Auriane GrosAuriane Gros
Auriane Gros
(1) Background: Persistent post-viral olfactory disorders (PPVOD) are estimated at 30% of patients one year after COVID-19 infection. No treatment is, to date, significantly effective on PPVOD with the exception of olfactory training (OT). The main objective of this work was to evaluate OT efficiency on post-COVID-19 PPVOD. (2) Methods: Consecutive patients consulting to the ENT department with post-COVID-19 PPVOD were included after completing clinical examination, the complete Sniffin’ Stick Test (TDI), the short version of the Questionnaire of olfactory disorders and the SF-36. Patients were trained to practice a self-olfactory training with a dedicated olfactory training kit twice a day for 6 months before returning to undergo the same assessments. (3) Results: Forty-three patients were included and performed 3.5 months of OT in average. We observed a significant TDI score improvement, increasing from 24.7 (±8.9) before the OT to 30.9 (±9.8) (p < 0.001). Based on normative data, a significant increase in the number of normosmic participants was observed only for the threshold values (p < 0.001). Specific and general olfaction-related quality of life improved after the OT. (4) Conclusions: Olfactory function appeared to improve only in peripheral aspects of post-COVID-19 PPVOD after OT. Future controlled studies must be performed to confirm the OT role and justify new therapeutic strategies that may focus on the central aspects of post-COVID-19 PPVOD.

20 February 2019 in Frontiers in Psychiatry
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FAFlorence Askenazy-Gittard
Florence Askenazy-Gittard
MGMorgane Gindt
Morgane Gindt
LCLucie Chauvelin
Lucie Chauvelin
MBMichèle Battista
Michèle Battista
FGFabian Guenolé
Fabian Guenolé
STSusanne Thümmler
Susanne Thümmler
Recent years have seen a multiplication of terrorist attacks in public places across European and North American countries, thus heightening the need for public mental health planning and response strategies focused on the special needs of children and their families. The present article retrospectively analyzes the early phase psychiatric response for children and adolescents after the truck attack in Nice on July 14th, 2016. In addition, lessons which can be drawn from it will be discussed, with a focus on organizational challenges in the early phase. During the first 2 weeks after the attack, 668 individuals have been registered at the medico-psychological emergency unit of the Children's Hospitals of Nice, including 365 (54.6%) children and adolescents of all ages. Overall, 146 child and adolescent mental health care professionals participated in this specific facility, including 75 psychiatrists and psychologists. The implementation of the medico-psychological emergency unit dedicated to the pediatric population has been an indispensable and unprecedented public health challenge in our country. Future studies are needed in order to evaluate and to improve the efficiency of the individual as well as collective impact of early phase psychiatric interventions dedicated for children and adolescents after mass trauma.

31 May 2022 in Brain Sciences
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Julie FiorentinoJulie Fiorentino
Julie Fiorentino
MPMagali Payne
Magali Payne
ECElisa Cancian
Elisa Cancian
APAlexandra Plonka
Alexandra Plonka
LDLouise-Émilie Dumas
Louise-Émilie Dumas
Auriane GrosAuriane Gros
Auriane Gros
Background: One of the main symptoms of COVID-19 is hyposmia or even anosmia. Olfactory identification is most often affected. In addition, some cognitive disorders tend to appear following the infection, particularly regarding executive functions, attention, and memory. Olfaction, and especially olfactory identification, is related to semantic memory which manages general knowledge about the world. The main objective of this study was to determine whether semantic memory is impaired in case of persistent post COVID-19 olfactory disorders. Methods: 84 patients (average age of 42.8 ± 13.6 years) with post COVID-19 olfactory loss were included after consulting to the ENT department. The clinical evaluation was carried out with the Pyramid and Palm Tree Test, the word-retrieval task from the Grémots, the Sniffin’ Sticks Test and the Computerised Olfactory Test for the Diagnosis of Alzheimer’s Disease. Results: Semantic memory was impaired in 20% (n = 17) of patients, especially in the 19–39 age-group. The olfactory threshold was only significantly correlated with the semantic memory scores. Conclusions: Similar to all cognitive disorders, semantic disorders can have a negative impact on quality of life if left untreated. It is essential to carry out specific assessments of post COVID-19 patients to accurately determine their disorders and to put in place the best possible rehabilitation, such as speech and language therapy, to avoid quality-of-life impairment.