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7 results on '"Melani, F."'

1. Seizure Outcome of Temporal Lobe Epilepsy Surgery in Adults and Children: A Systematic Review and Meta-Analysis.

Author

Barba C, Giometto S, Lucenteforte E, Pellacani S, Matta G, Bettiol A, Minghetti S, Falorni L, Melani F, Di Giacomo G, Giordano F, De Masi S, and Guerrini R

Subjects
Adolescent, Adult, Child, Humans, Retrospective Studies, Seizures complications, Seizures surgery, Treatment Outcome, Epilepsy complications, Epilepsy, Temporal Lobe complications, Epilepsy, Temporal Lobe surgery
Abstract

Background: Temporal lobe epilepsy (TLE) surgery is associated with the best seizure outcome in adults, although its long-term results remain suboptimal. Retrospective pediatric studies suggest better figures whose determinants are poorly understood., Objective: To conduct a systematic review and meta-analysis of studies on the efficacy of TLE surgery in children (age younger than 18 years) and adults., Methods: We searched MEDLINE, Embase, and Cochrane Library for TLE surgery original research from January 1, 1990, until May 12, 2020. The outcome measures were seizure freedom since surgery and seizure freedom either at last or longest follow-up. We meta-analyzed the proportion of children and adults achieving either Engel I/International League Against Epilepsy (ILAE) 1 or Engel IA/ILAE 1A outcome by follow-up duration, type of surgery, histopathology, neuroimaging, quality of the studies, and publication period. We used a random effects model with Freeman-Tukey double arcsine transformation of proportions., Results: From 40 409 records identified, we included 277 studies (30 848 patients). The proportions of patients achieving Engel I/ILAE 1 and Engel IA/ILAE 1A outcomes were 0.74 (95% CI, 0.69-0.78) and 0.61 (0.48-0.74) for children and 0.69 (0.67-0.71) and 0.56 (0.52-0.60) for adults. Histopathology significantly influenced Engel I/ILAE 1 outcome in adults but not in children ( P < .0001), while the type of surgery significantly influenced Engel I/ILAE 1 outcome in children but not in adults., Conclusion: The proportion of seizure freedom after TLE surgery was higher in children, although not significantly. Histopathology and the surgical approach can influence seizure outcome, with age-related variability., (Copyright © Congress of Neurological Surgeons 2022. All rights reserved.)

Published
2022
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2. Expanding the genetic and phenotypic spectrum of CHD2-related disease: From early neurodevelopmental disorders to adult-onset epilepsy.

Author

De Maria B, Balestrini S, Mei D, Melani F, Pellacani S, Pisano T, Rosati A, Scaturro GM, Giordano L, Cantalupo G, Fontana E, Zammarchi C, Said E, Leuzzi V, Mastrangelo M, Galosi S, Parrini E, and Guerrini R

Subjects
DNA-Binding Proteins genetics, Electroencephalography, Humans, Mutation, Phenotype, Epilepsy genetics, Neurodevelopmental Disorders genetics
Abstract

CHD2 encodes the chromodomain helicase DNA-binding protein 2, an ATP-dependent enzyme that acts as a chromatin remodeler. CHD2 pathogenic variants have been associated with various early onset phenotypes including developmental and epileptic encephalopathy, self-limiting or pharmacoresponsive epilepsies and neurodevelopmental disorders without epilepsy. We reviewed 84 previously reported patients carrying 76 different CHD2 pathogenic or likely pathogenic variants and describe 18 unreported patients carrying 12 novel pathogenic or likely pathogenic variants, two recurrent likely pathogenic variants (in two patients each), three previously reported pathogenic variants, one gross deletion. We also describe a novel phenotype of adult-onset pharmacoresistant epilepsy, associated with a novel CHD2 missense likely pathogenic variant, located in an interdomain region. A combined review of previously published and our own observations indicates that although most patients (72.5%) carry truncating CHD2 pathogenic variants, CHD2-related phenotypes encompass a wide spectrum of conditions with developmental delay/intellectual disability (ID), including prominent language impairment, attention deficit hyperactivity disorder and autistic spectrum disorder. Epilepsy is present in 92% of patients with a median age at seizure onset of 2 years and 6 months. Generalized epilepsy types are prevalent and account for 75.5% of all epilepsies, with photosensitivity being a common feature and adult-onset nonsyndromic epilepsy a rare presentation. No clear genotype-phenotype correlation has emerged., (© 2021 Wiley Periodicals LLC.)

Published
2022
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3. Automatic detection and sonification of nonmotor generalized onset epileptic seizures: Preliminary results.

Author

Frassineti L, Barba C, Melani F, Piras F, Guerrini R, and Manfredi C

Subjects
Algorithms, Child, Data Analysis, Epilepsy, Generalized diagnosis, Female, Humans, Male, Pilot Projects, Wavelet Analysis, Electroencephalography methods, Epilepsy diagnosis, Seizures diagnosis
Abstract

Long-term video-EEG monitoring has improved diagnosis and treatment of epilepsy, especially in children. However, the amount of data neurophysiologists must analyze has grown remarkably. The main purpose of this paper is to provide a diagnostic support to speed up and ease EEG interpretation for a specific application concerning absence seizures, a type of non-motor generalized epileptic seizures. The proposed method consists of a pre-processing step where signals are filtered through the Stationary Wavelet Transform for the reduction of possible artefacts. Subsequently, a supervised automatic classification method is implemented for seizure detection, based on the Support Vector Machine Fine Gaussian method. Finally, a post-processing step is implemented in which spatial and temporal thresholds are defined for both online and offline application. In addition, a method that applies sonification techniques is developed. Sonification techniques could speed up the process of interpreting information, allowing rapid clinical intervention and a continuous monitoring of the event. The dataset consists of 30 EEG recordings performed in 24 children with absence seizures, clinically evaluated at the Meyer Children's Hospital in Firenze, Italy. The method shows encouraging results both in terms of balanced accuracy (about 96%) and latency times (1.25 s on average), which might make it suitable for online clinical trials. In fact, it was implemented in the perspective of a possible real-time application in clinical practice., (Copyright © 2019 Elsevier B.V. All rights reserved.)

Published
2019
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4. Continuous High Frequency Activity: a peculiar SEEG pattern related to specific brain regions.

Author

Melani F, Zelmann R, Mari F, and Gotman J

Subjects
Adolescent, Adult, Aged, Brain Mapping, Electrodes, Implanted, Female, Humans, Male, Occipital Lobe physiopathology, Seizures physiopathology, Sleep physiology, Brain physiopathology, Electroencephalography methods, Epilepsy physiopathology
Abstract

Objective: While visually marking the high frequency oscillations in the stereo-EEG of epileptic patients, we observed a continuous/semicontinuous activity in the ripple band (80-250 Hz), which we defined continuous High Frequency Activity (HFA). We aim to analyze in all brain regions the occurrence and significance of this particular pattern., Methods: Twenty patients implanted in mesial temporal and neocortical areas were studied. One minute of slow-wave sleep was reviewed. The background was classified as continuous/semicontinuous, irregular, or sporadic based on the duration of the fast oscillations. Each channel was classified as inside/outside the seizure onset zone (SOZ) or a lesion., Results: The continuous/semicontinuous HFA occurred in 54 of the 790 channels analyzed, with a clearly higher prevalence in hippocampus and occipital lobe. No correlation was found with the SOZ or lesions. In the occipital lobe the continuous/semicontinuous HFA was present independently of whether eyes were open or closed., Conclusions: We describe what appears to be a new physiological High Frequency Activity, independent of epileptogenicity, present almost exclusively in the hippocampus and occipital cortex but independent of the alpha rhythm., Significance: The continuous HFA may be an intrinsic characteristic of specific brain regions, reflecting a particular type of physiological neuronal activity., (Copyright © 2013 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.)

Published
2013
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5. Diagnostic implications of genetic copy number variation in epilepsy plus

Author

Coppola, A., Cellini, E., Stamberger, H., Saarentaus, E., Cetica, V., Lal, D., Djemie, T., Bartnik-Glaska, M., Ceulemans, B., Helen Cross, J., Deconinck, T., Masi, S. D., Dorn, T., Guerrini, R., Hoffman-Zacharska, D., Kooy, F., Lagae, L., Lench, N., Lemke, J. R., Lucenteforte, E., Madia, F., Mefford, H. C., Morrogh, D., Nuernberg, P., Palotie, A., Schoonjans, A. -S., Striano, P., Szczepanik, E., Tostevin, A., Vermeesch, J. R., Van Esch, H., Van Paesschen, W., Waters, J. J., Weckhuysen, S., Zara, F., Jonghe, P. D., Sisodiya, S. M., Marini, C., Lehesjioki, A. -E., Craiu, D., Talvik, T., Caglayan, H., Serratosa, J., Sterbova, K., Moller, R. S., Hjalgrim, H., Lerche, H., Weber, Y., Helbig, I., von Spiczak, S., Barba, C., Bogaerts, A., Boni, A., Galizia, E. C., Chiari, S., Di Gacomo, G., Ferrari, A., Guarducci, S., Giglio, S., Holmgren, P., Leu, C., Melani, F., Novara, F., Pantaleo, M., Peeters, E., Pisano, T., Rosati, A., Sander, J., Schoeler, N., Stankiewicz, P., Striano, S., Suls, A., Traverso, M., Vandeweyer, G., Van Dijck, A., Zuffardi, O., Coppola, Antonietta, Cellini, Elena, Stamberger, Hannah, Saarentaus, Elmo, Cetica, Valentina, Lal, Denni, Djémié, Tania, Bartnik-Glaska, Magdalena, Ceulemans, Berten, Helen Cross, J., Deconinck, Tine, Masi, Salvatore De, Dorn, Thoma, Guerrini, Renzo, Hoffman-Zacharska, Dorotha, Kooy, Frank, Lagae, Lieven, Lench, Nichola, Lemke, Johannes R., Lucenteforte, Ersilia, Madia, Francesca, Mefford, Heather C., Morrogh, Deborah, Nuernberg, Peter, Palotie, Aarno, Schoonjans, An-Sofie, Striano, Pasquale, Szczepanik, Elzbieta, Tostevin, Anna, Vermeesch, Joris R., Van Esch, Hilde, Van Paesschen, Wim, Waters, Jonathan J, Weckhuysen, Sarah, Zara, Federico, Jonghe, Peter De, Sisodiya, Sanjay M., Marini, Carla, Lehesjioki, Anna-Elina, Craiu, Dana, Talvik, Tiina, Caglayan, Hande, Serratosa, Jose, Sterbova, Katalin, Møller, Rikke S., Hjalgrim, Helle, Lerche, Holger, Weber, Yvonne, Helbig, Ingo, von Spiczak, Sarah, Barba, Carmen, Bogaerts, Anneleen, Boni, Antonella, Galizia, Elisabeth Caruana, Chiari, Sara, Di Gacomo, Gianpiero, Ferrari, Annarita, Guarducci, Silvia, Giglio, Sabrina, Holmgren, Philip, Leu, Costin, Melani, Federico, Novara, Francesca, Pantaleo, Marilena, Peeters, Elke, Pisano, Tiziana, Rosati, Anna, Sander, Josemir, Schoeler, Natasha, Stankiewicz, Pawel, Striano, Salvatore, Suls, Arvid, Traverso, Monica, Vandeweyer, Geert, Van Dijck, Anke, and Zuffardi, Orsetta

Subjects
epilepsy gene, Epilepsy, DNA Copy Number Variations, Genotype, Comorbidity, array CGH, copy number variants, epilepsy genes, SNP array, Phenotype, Neurology, mental disorders, Full‐length Original Research, Humans, copy number variant, Genetic Predisposition to Disease, Neurology (clinical)
Abstract

Summary Objective Copy number variations (CNVs) represent a significant genetic risk for several neurodevelopmental disorders including epilepsy. As knowledge increases, reanalysis of existing data is essential. Reliable estimates of the contribution of CNVs to epilepsies from sizeable populations are not available. Methods We assembled a cohort of 1255 patients with preexisting array comparative genomic hybridization or single nucleotide polymorphism array based CNV data. All patients had “epilepsy plus,” defined as epilepsy with comorbid features, including intellectual disability, psychiatric symptoms, and other neurological and nonneurological features. CNV classification was conducted using a systematic filtering workflow adapted to epilepsy. Results Of 1097 patients remaining after genetic data quality control, 120 individuals (10.9%) carried at least one autosomal CNV classified as pathogenic; 19 individuals (1.7%) carried at least one autosomal CNV classified as possibly pathogenic. Eleven patients (1%) carried more than one (possibly) pathogenic CNV. We identified CNVs covering recently reported (HNRNPU) or emerging (RORB) epilepsy genes, and further delineated the phenotype associated with mutations of these genes. Additional novel epilepsy candidate genes emerge from our study. Comparing phenotypic features of pathogenic CNV carriers to those of noncarriers of pathogenic CNVs, we show that patients with nonneurological comorbidities, especially dysmorphism, were more likely to carry pathogenic CNVs (odds ratio = 4.09, confidence interval = 2.51‐6.68; P = 2.34 × 10−9). Meta‐analysis including data from published control groups showed that the presence or absence of epilepsy did not affect the detected frequency of CNVs. Significance The use of a specifically adapted workflow enabled identification of pathogenic autosomal CNVs in 10.9% of patients with epilepsy plus, which rose to 12.7% when we also considered possibly pathogenic CNVs. Our data indicate that epilepsy with comorbid features should be considered an indication for patients to be selected for a diagnostic algorithm including CNV detection. Collaborative large‐scale CNV reanalysis leads to novel declaration of pathogenicity in unexplained cases and can promote discovery of promising candidate epilepsy genes.

Published
2019

6. Diagnostic implications of genetic copy number variation in epilepsy plus

Author

Coppola, A1, 2, 3, Cellini, E4, Stamberger, H5, 6, 7, Saarentaus, E8, 9, 10, Cetica, V4, Lal, D10, 11, 12, Djémié, T5, 6, Bartnik-Glaska, M13, Ceulemans, B14, Cross, JH15, 16, 17, Deconinck, T5, De Masi S7, Dorn, T18, Guerrini, R, Hoffman-Zacharska, D14, Kooy, F19, Lagae, L20, Lench, N21, Lemke, JR22, Lucenteforte, E23, Madia, F25, Mefford, HC26, Morrogh, D21, Nuernberg, P27, Palotie, A11, Schoonjans, AS15, Striano, P28, Szczepanik, E29, Tostevin, A1, 2, Vermeesch, JR30, Van Esch H30, Van Paesschen W31, Waters, JJ21, Weckhuysen, S5, 6, 12, Zara, F25, De Jonghe P5, Sisodiya, SM1, Marini, C, EuroEPINOMICS-RES, Consortium, Lehesjioki AE, EpiCNV Consortium., Craiu, D, Talvik, T, Caglayan, H, Serratosa, J, Sterbova, K, Møller, Rs, Hjalgrim, H, Lerche, H, Weber, Y, Helbig, I, von Spiczak, S, Barba, C, Bogaerts, A, Boni, A, Galizia, Ec, Chiari, S, Di Gacomo, G, Ferrari, A, Garducci, S, Giglio, S, Holmgren, P, Leu, C, Melani, F, Novara, F, Pantaleo, M, Peeters, E, Pisano, T, Rosati, A, Sander, J, Schoeler, N, Stankiewicz, P, Striano, S, Suls, A, Traverso, M, Vandeweyer, G, Van Dijck, A, and Zuffardi, O.

Subjects
epilepsy
Published
2019

7. HCN1 mutation spectrum: from neonatal epileptic encephalopathy to benign generalized epilepsy and beyond

Author

Shoji Ichikawa, Ilaria Rivolta, Anna Binda, Laurie S. Sadler, Sonia Figueiroa, Renzo Guerrini, Annick Laridon, Pasquale Striano, Katalin Sterbova, Bina Santoro, Petra Laššuthová, Maria Margherita Mancardi, Francesca Ragona, Anna Rosati, Fernando Kok, Laura Canafoglia, Daniele Frattini, Elena Freri, Christine Coubes, Davide Mei, Bobby P. C. Koeleman, Daniel Bauer, Carla Marini, Christel Depienne, Carlotta Spagnoli, Sophie Scheidecker, Carlo Fusco, Tiziana Granata, Barbara Castellotti, Eva H. Brilstra, Federico Melani, Cristina Garrido, Cinzia Gellera, A. Micheil Innes, Wilfrid Carré, Christèle Dubourg, Elena Parrini, Alessandro Porro, Caroline Nava, Maria Giardino, Sophie Julia, Manuela Santos, Yves Alembik, Eric LeGuern, Andrea Barbuti, Silvana Franceschetti, Federico Zara, Paul Kuentz, Raffaella Milanesi, Catherine Mercer, Carine Dalle, Julien Thevenon, Nicolas Deconinck, Agnès Rastetter, Laurent Pasquier, Kay Hamacher, Renske Oegema, Gerhard Thiel, Dario DiFrancesco, Tiziana Pisano, Chelsea Chambers, Jacopo C. DiFrancesco, Guillaume Smits, Katherine L. Helbig, Julie Soblet, Jana Neupauerová, Damien R Clark, Johannes R. Lemke, Radhika Dhamija, Anna Moroni, Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Sorbonne Université - Faculté de Médecine (SU FM), Sorbonne Université (SU), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University Medical Center [Utrecht], Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Hôpital Arnaud de Villeneuve [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Génétique des Anomalies du Développement (GAD), IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne (UB), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], CHU Pontchaillou [Rennes], Les Hôpitaux Universitaires de Strasbourg (HUS), Children’s Hospital of Philadelphia (CHOP ), University Hospital Motol [Prague], University of Genoa (UNIGE), Université libre de Bruxelles (ULB), Hôpital Erasme [Bruxelles] (ULB), Faculté de Médecine [Bruxelles] (ULB), Université libre de Bruxelles (ULB)-Université libre de Bruxelles (ULB), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA), Universitätsklinikum Essen [Universität Duisburg-Essen] (Uniklinik Essen), Marini, C, Porro, A, Rastetter, A, Dalle, C, Rivolta, I, Bauer, D, Oegema, R, Nava, C, Parrini, E, Mei, D, Mercer, C, Dhamija, R, Chambers, C, Coubes, C, Thévenon, J, Kuentz, P, Julia, S, Pasquier, L, Dubourg, C, Carré, W, Rosati, A, Melani, F, Pisano, T, Giardino, M, Innes, A, Alembik, Y, Scheidecker, S, Santos, M, Figueiroa, S, Garrido, C, Fusco, C, Frattini, D, Spagnoli, C, Binda, A, Granata, T, Ragona, F, Freri, E, Franceschetti, S, Canafoglia, L, Castellotti, B, Gellera, C, Milanesi, R, Mancardi, M, Clark, D, Kok, F, Helbig, K, Ichikawa, S, Sadler, L, Neupauerová, J, Laššuthova, P, Šterbová, K, Laridon, A, Brilstra, E, Koeleman, B, Lemke, J, Zara, F, Striano, P, Soblet, J, Smits, G, Deconinck, N, Barbuti, A, Difrancesco, D, Leguern, E, Guerrini, R, Santoro, B, Hamacher, K, Thiel, G, Moroni, A, Di Francesco, J, and Depienne, C

Subjects
0301 basic medicine, Proband, Male, Models, Molecular, Potassium Channels, [SDV]Life Sciences [q-bio], Medizin, medicine.disease_cause, Epileptogenesis, Membrane Potentials, Epilepsy, 0302 clinical medicine, Hyperpolarization-Activated Cyclic Nucleotide-Gated Channels, Missense mutation, Child, Genetics, Mutation, Middle Aged, Phenotype, 3. Good health, Transmembrane domain, clinical spectrum, epilepsy, HCN1, intellectual disability, ion channel, Child, Preschool, Epilepsy, Generalized, Female, Spasms, Infantile, Adult, Adolescent, CHO Cells, Biology, 03 medical and health sciences, Young Adult, Cricetulus, medicine, Animals, Humans, Generalized epilepsy, Genetic Association Studies, Aged, Infant, medicine.disease, Electric Stimulation, 030104 developmental biology, Mutagenesis, Site-Directed, Neurology (clinical), 030217 neurology & neurosurgery
Abstract

International audience; Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels control neuronal excitability and their dysfunction has been linked to epileptogenesis but few individuals with neurological disorders related to variants altering HCN channels have been reported so far. In 2014, we described five individuals with epileptic encephalopathy due to de novo HCN1 variants. To delineate HCN1-related disorders and investigate genotype-phenotype correlations further, we assembled a cohort of 33 unpublished patients with novel pathogenic or likely pathogenic variants: 19 probands carrying 14 different de novo mutations and four families with dominantly inherited variants segregating with epilepsy in 14 individuals, but not penetrant in six additional individuals. Sporadic patients had epilepsy with median onset at age 7 months and in 36% the first seizure occurred during a febrile illness. Overall, considering familial and sporadic patients, the predominant phenotypes were mild, including genetic generalized epilepsies and genetic epilepsy with febrile seizures plus (GEFS+) spectrum. About 20% manifested neonatal/infantile onset otherwise unclassified epileptic encephalopathy. The study also included eight patients with variants of unknown significance: one adopted patient had two HCN1 variants, four probands had intellectual disability without seizures, and three individuals had missense variants inherited from an asymptomatic parent. Of the 18 novel pathogenic missense variants identified, 12 were associated with severe phenotypes and clustered within or close to transmembrane domains, while variants segregating with milder phenotypes were located outside transmembrane domains, in the intracellular N- and C-terminal parts of the channel. Five recurrent variants were associated with similar phenotypes. Using whole-cell patch-clamp, we showed that the impact of 12 selected variants ranged from complete loss-of-function to significant shifts in activation kinetics and/or voltage dependence. Functional analysis of three different substitutions altering Gly391 revealed that these variants had different consequences on channel biophysical properties. The Gly391Asp variant, associated with the most severe, neonatal phenotype, also had the most severe impact on channel function. Molecular dynamics simulation on channel structure showed that homotetramers were not conducting ions because the permeation path was blocked by cation(s) strongly complexed to the Asp residue, whereas heterotetramers showed an instantaneous current component possibly linked to deformation of the channel pore. In conclusion, our results considerably expand the clinical spectrum related to HCN1 variants to include common generalized epilepsy phenotypes and further illustrate how HCN1 has a pivotal function in brain development and control of neuronal excitability.

Published
2018

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