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341 results on '"Scuderi C"'

1. Targeting neuroinflammation in Alzheimer’s disease

Author

Bronzuoli MR, Iacomino A, Steardo L, and Scuderi C

Subjects
Neuroinflammation, Astrocyte, Microglia, Alzheimer’s disease, Pathology, RB1-214, Therapeutics. Pharmacology, RM1-950
Abstract

Maria Rosanna Bronzuoli,1 Aniello Iacomino,2 Luca Steardo,1 Caterina Scuderi1 1Department of Physiology and Pharmacology “Vittorio Erspamer”, Sapienza University of Rome, Rome, Italy; 2Faculty of Psychology, University of Rome “G. Marconi”, Rome, Italy Abstract: Almost 47 million people suffer from dementia worldwide, with an estimated new case diagnosed every 3.2 seconds. Alzheimer’s disease (AD) accounts for approximately 60%–80% of all dementia cases. Given this evidence, it is clear dementia represents one of the greatest global public health challenges. Currently used drugs alleviate the symptoms of AD but do not treat the underlying causes of dementia. Hence, a worldwide quest is under way to find new treatments to stop, slow, or even prevent AD. Besides the classic targets of the oldest therapies, represented by cholinergic and glutamatergic systems, β-amyloid (Aβ) plaques, and tau tangles, new therapeutic approaches have other targets. One of the newest and most promising strategies is the control of reactive gliosis, a multicellular response to brain injury. This phenomenon occurs as a consequence of a persistent glial activation, which leads to cellular dysfunctions and neuroinflammation. Reactive gliosis is now considered a key abnormality in the AD brain. It has been demonstrated that reactive astrocytes surround both Aβ plaques and tau tangles. In this condition, glial cells lose some of their homeostatic functions and acquire a proinflammatory phenotype amplifying neuronal damage. So, molecules that are able to restore their physiological functions and control the neuroinflammatory process offer new therapeutic opportunities for this devastating disease. In this review, we describe the role of neuroinflammation in the AD pathogenesis and progression and then provide an overview of the recent research with the aim of developing new therapies to treat this disorder. Keywords: reactive gliosis, astrocyte, microglia, Alzheimer’s disease

Published
2016

2. Changes at glutamate tripartite synapses in the prefrontal cortex of a new animal model of resilience/vulnerability to acute stress

Author

Bonifacino, T, Mingardi, J, Facchinetti, R, Sala, N, Frumento, G, Ndoj, E, Valenza, M, Paoli, C, Ieraci, A, Torazza, C, Balbi, M, Guerinoni, M, Muhammad, N, Russo, I, Milanese, M, Scuderi, C, Barbon, A, Steardo, L, Bonanno, G, Popoli, M, Musazzi, L, Bonifacino T., Mingardi J., Facchinetti R., Sala N., Frumento G., Ndoj E., Valenza M., Paoli C., Ieraci A., Torazza C., Balbi M., Guerinoni M., Muhammad N., Russo I., Milanese M., Scuderi C., Barbon A., Steardo L., Bonanno G., Popoli M., Musazzi L., Bonifacino, T, Mingardi, J, Facchinetti, R, Sala, N, Frumento, G, Ndoj, E, Valenza, M, Paoli, C, Ieraci, A, Torazza, C, Balbi, M, Guerinoni, M, Muhammad, N, Russo, I, Milanese, M, Scuderi, C, Barbon, A, Steardo, L, Bonanno, G, Popoli, M, Musazzi, L, Bonifacino T., Mingardi J., Facchinetti R., Sala N., Frumento G., Ndoj E., Valenza M., Paoli C., Ieraci A., Torazza C., Balbi M., Guerinoni M., Muhammad N., Russo I., Milanese M., Scuderi C., Barbon A., Steardo L., Bonanno G., Popoli M., and Musazzi L.

Abstract

Stress represents a main risk factor for psychiatric disorders. Whereas it is known that even a single trauma may induce psychiatric disorders in humans, the mechanisms of vulnerability to acute stressors have been little investigated. In this study, we generated a new animal model of resilience/vulnerability to acute footshock (FS) stress in rats and analyzed early functional, molecular, and morphological determinants of stress vulnerability at tripartite glutamate synapses in the prefrontal cortex (PFC). We found that adult male rats subjected to FS can be deemed resilient (FS-R) or vulnerable (FS-V), based on their anhedonic phenotype 24 h after stress exposure, and that these two populations are phenotypically distinguishable up to two weeks afterwards. Basal presynaptic glutamate release was increased in the PFC of FS-V rats, while depolarization-evoked glutamate release and synapsin I phosphorylation at Ser9 were increased in both FS-R and FS-V. In FS-R and FS-V rats the synaptic expression of GluN2A and apical dendritic length of prelimbic PFC layers II–III pyramidal neurons were decreased, while BDNF expression was selectively reduced in FS-V. Depolarization-evoked (carrier-mediated) glutamate release from astroglia perisynaptic processes (gliosomes) was selectively increased in the PFC of FS-V rats, while GLT1 and xCt levels were higher and GS expression reduced in purified PFC gliosomes from FS-R. Overall, we show for the first time that the application of the sucrose intake test to rats exposed to acute FS led to the generation of a novel animal model of resilience/vulnerability to acute stress, which we used to identify early determinants of maladaptive response related to behavioral vulnerability to stress.

Published
2023

3. Acute Ketamine Facilitates Fear Memory Extinction in a Rat Model of PTSD Along With Restoring Glutamatergic Alterations and Dendritic Atrophy in the Prefrontal Cortex

Author

Sala, N, Paoli, C, Bonifacino, T, Mingardi, J, Schiavon, E, La Via, L, Milanese, M, Tornese, P, Datusalia, A, Rosa, J, Facchinetti, R, Frumento, G, Carini, G, Salerno Scarzella, F, Scuderi, C, Forti, L, Barbon, A, Bonanno, G, Popoli, M, Musazzi, L, Sala N., Paoli C., Bonifacino T., Mingardi J., Schiavon E., La Via L., Milanese M., Tornese P., Datusalia A. K., Rosa J., Facchinetti R., Frumento G., Carini G., Salerno Scarzella F., Scuderi C., Forti L., Barbon A., Bonanno G., Popoli M., Musazzi L., Sala, N, Paoli, C, Bonifacino, T, Mingardi, J, Schiavon, E, La Via, L, Milanese, M, Tornese, P, Datusalia, A, Rosa, J, Facchinetti, R, Frumento, G, Carini, G, Salerno Scarzella, F, Scuderi, C, Forti, L, Barbon, A, Bonanno, G, Popoli, M, Musazzi, L, Sala N., Paoli C., Bonifacino T., Mingardi J., Schiavon E., La Via L., Milanese M., Tornese P., Datusalia A. K., Rosa J., Facchinetti R., Frumento G., Carini G., Salerno Scarzella F., Scuderi C., Forti L., Barbon A., Bonanno G., Popoli M., and Musazzi L.

Abstract

Stress represents a major risk factor for psychiatric disorders, including post-traumatic stress disorder (PTSD). Recently, we dissected the destabilizing effects of acute stress on the excitatory glutamate system in the prefrontal cortex (PFC). Here, we assessed the effects of single subanesthetic administration of ketamine (10 mg/kg) on glutamate transmission and dendritic arborization in the PFC of footshock (FS)-stressed rats, along with changes in depressive, anxious, and fear extinction behaviors. We found that ketamine, while inducing a mild increase of glutamate release in the PFC of naïve rats, blocked the acute stress-induced enhancement of glutamate release when administered 24 or 72 h before or 6 h after FS. Accordingly, the treatment with ketamine 6 h after FS also reduced the stress-dependent increase of spontaneous excitatory postsynaptic current (sEPSC) amplitude in prelimbic (PL)-PFC. At the same time, ketamine injection 6 h after FS was found to rescue apical dendritic retraction of pyramidal neurons induced by acute stress in PL-PFC and facilitated contextual fear extinction. These results show rapid effects of ketamine in animals subjected to acute FS, in line with previous studies suggesting a therapeutic action of the drug in PTSD models. Our data are consistent with a mechanism of ketamine involving re-establishment of synaptic homeostasis, through restoration of glutamate release, and structural remodeling of dendrites.

Published
2022

5. Acute Ketamine Facilitates Fear Memory Extinction in a Rat Model of PTSD Along With Restoring Glutamatergic Alterations and Dendritic Atrophy in the Prefrontal Cortex

Author

Sala N., Paoli C., Bonifacino T., Mingardi J., Schiavon E., La Via L., Milanese M., Tornese P., Datusalia A. K., Rosa J., Facchinetti R., Frumento G., Carini G., Salerno Scarzella F., Scuderi C., Forti L., Barbon A., Bonanno G., Popoli M., Musazzi L., Sala, N, Paoli, C, Bonifacino, T, Mingardi, J, Schiavon, E, La Via, L, Milanese, M, Tornese, P, Datusalia, A, Rosa, J, Facchinetti, R, Frumento, G, Carini, G, Salerno Scarzella, F, Scuderi, C, Forti, L, Barbon, A, Bonanno, G, Popoli, M, and Musazzi, L

Subjects
acute stress, glutamate transmission, ketamine, prefrontal cortex (PFC), animal model, acute stress, ketamine, PTSD, prefrontal cortex (PFC), glutamate transmission, dendritic arborization, fear extinction, animal model, Settore BIO/14 - Farmacologia, PTSD, dendritic arborization, fear extinction, acute stre
Abstract

Stress represents a major risk factor for psychiatric disorders, including post-traumatic stress disorder (PTSD). Recently, we dissected the destabilizing effects of acute stress on the excitatory glutamate system in the prefrontal cortex (PFC). Here, we assessed the effects of single subanesthetic administration of ketamine (10 mg/kg) on glutamate transmission and dendritic arborization in the PFC of footshock (FS)-stressed rats, along with changes in depressive, anxious, and fear extinction behaviors. We found that ketamine, while inducing a mild increase of glutamate release in the PFC of naïve rats, blocked the acute stress-induced enhancement of glutamate release when administered 24 or 72 h before or 6 h after FS. Accordingly, the treatment with ketamine 6 h after FS also reduced the stress-dependent increase of spontaneous excitatory postsynaptic current (sEPSC) amplitude in prelimbic (PL)-PFC. At the same time, ketamine injection 6 h after FS was found to rescue apical dendritic retraction of pyramidal neurons induced by acute stress in PL-PFC and facilitated contextual fear extinction. These results show rapid effects of ketamine in animals subjected to acute FS, in line with previous studies suggesting a therapeutic action of the drug in PTSD models. Our data are consistent with a mechanism of ketamine involving re-establishment of synaptic homeostasis, through restoration of glutamate release, and structural remodeling of dendrites.

Published
2022

7. Possible implication of undescribed SMN1-SMN2 genotype in chronic EMG-pattern of SMA with transitory acute denervation

Author

Vitello, G. A., Calì, F., Mirella Vinci, Scuderi, C., L’episcopo, F., Musumeci, A., Musumeci, S. A., and Nicotera, A. G.

Subjects
Electromyography, Case Report, SMA, Hereditary Motor Neuropathies, SMN1, nervous system diseases, SMN2
Abstract

Spinal muscular atrophy (SMA) refers to a group of genetic neuromuscular disorders affecting lower motor neurons causative of numerous phenotypes. To date, according to the age of onset, maximum muscular activity achieved, and life expectation four types of SMA are recognized, all caused by mutations in the SMN1 gene with SMN2 copy number influencing disease severity. Herein, we describe the case of a 31-year-old young male with normal psychomotor development who has experienced fatigue, cramps, and muscle fasciculations in the lower limbs for a period of 2 months. Based on electrophysiological and clinical findings we performed SMA genetic, clinical exome and RNA expression of candidate genes which led us to suggest SMN1-SMN2 genes [(2+0) and (0+0)] combination as possibly being implicated in the phenotype.

Published
2020

8. Biallelic mutations in neurofascin cause neurodevelopmental impairment and peripheral demyelination

Author

Efthymiou, S., Salpietro, V., Malintan, N., Poncelet, M., Kriouile, Y., Fortuna, S., Zorzi, R. de, Payne, K., Henderson, L.B., Cortese, A., Maddirevula, S., Alhashmi, N., Wiethoff, S., Ryten, M., Botia, J.A., Provitera, V., Schuelke, M., Vandrovcova, J., Groppa, S., Karashova, B.M., Nachbauer, W., Boesch, S., Arning, L., Timmann, D., Cormand, B., Perez-Duenas, B., Goraya, J.S., Sultan, T., Mine, J., Avdjieva, D., Kathom, H., Tincheva, R., Banu, S., Pineda-Marfa, M., Veggiotti, P., Ferrari, M.D., Maagdenberg, A.M.J.M. van den, Verrotti, A., Marseglia, G., Savasta, S., Garcia-Silva, M., Ruiz, A.M., Garavaglia, B., Borgione, E., Portaro, S., Sanchez, B.M., Boles, R., Papacostas, S., Vikelis, M., Rothman, J., Kullmann, D., Papanicolaou, E.Z., Dardiotis, E., Maqbool, S., Ibrahim, S., Kirmani, S., Rana, N.N., Atawneh, O., Lim, S.Y., Shaikh, F., Koutsis, G., Breza, M., Mangano, S., Scuderi, C., Morello, G., Stojkovic, T., Zollo, M., Heimer, G., Dauvilliers, Y.A., Minetti, C., Al-Khawaja, I., Al-Mutairi, F., Hamed, S., Pipis, M., Bettencourt, C., Rinaldi, S., Walsh, L., Torti, E., Iodice, V., Najafi, M., Karimiani, E.G., Maroofian, R., Siquier-Pernet, K., Boddaert, N., Lonlay, P. de, Cantagrel, V., Aguennouz, M., Khorassani, M. el, Schmidts, M., Alkuraya, F.S., Edvardson, S., Nolano, M., Devaux, J., Houlden, H., SYNAPS Study Grp, Efthymiou, S., Salpietro, V., Malintan, N., Poncelet, M., Kriouile, Y., Fortuna, S., De Zorzi, R., Payne, K., Henderson, L. B., Cortese, A., Maddirevula, S., Alhashmi, N., Wiethoff, S., Ryten, M., Botia, J. A., Provitera, V., Schuelke, M., Vandrovcova, J., Walsh, L., Torti, E., Iodice, V., Najafi, M., Karimiani, E. G., Maroofian, R., Siquier-Pernet, K., Boddaert, N., De Lonlay, P., Cantagrel, V., Aguennouz, M., El Khorassani, M., Schmidts, M., Alkuraya, F. S., Edvardson, S., Nolano, M., Devaux, J., Houlden, H., Groppa, S., Karashova, B. M., Nachbauer, W., Boesch, S., Arning, L., Timmann, D., Cormand, B., Perez-Duenas, B., Goraya, J. S., Sultan, T., Mine, J., Avdjieva, D., Kathom, H., Tincheva, R., Banu, S., Pineda-Marfa, M., Veggiotti, P., Ferrari, M. D., Van Den Maagdenberg, A. M. J. M., Verrotti, A., Marseglia, G., Savasta, S., Garcia-Silva, M., Ruiz, A. M., Garavaglia, B., Borgione, E., Portaro, S., Sanchez, B. M., Boles, R., Papacostas, S., Vikelis, M., Rothman, J., Kullmann, D., Papanicolaou, E. Z., Dardiotis, E., Maqbool, S., Ibrahim, S., Kirmani, S., Rana, N. N., Atawneh, O., Lim, S. -Y., Shaikh, F., Koutsis, G., Breza, M., Mangano, S., Scuderi, C., Morello, G., Stojkovic, T., Zollo, M., Heimer, G., Dauvilliers, Y. A., Minetti, C., Al-Khawaja, I., Al-Mutairi, F., Hamed, S., Pipis, M., Bettencourt, C., Rinaldi, S., Institut des Neurosciences de Montpellier - Déficits sensoriels et moteurs (INM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Laboratory of Molecular Biophysics, Department of Biochemistry, Department of Biochemistry, Hertie Institute for Clinical Brain Research and Center for Neurology, University of Tübingen, Department of Medical and Molecular Genetics, King‘s College London, Department of Human Genetics, Ruhr University Bochum (RUB), Universitat de Barcelona (UB), Fondazione, Leiden University Medical Center (LUMC), Department of Physiology and Cellular Biophysics [New York, NY, USA], Columbia University College of Physicians and Surgeons, Department of Microbiology, Università degli studi di Catania [Catania], Institut de Myologie, Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Association française contre les myopathies (AFM-Téléthon)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Ceinge, centro di Ingegneria Genetica e Biotecnologie Avanzate, Unité des troubles du sommeil, Centre de référence national sur les maladies rares (narcolepsie, hypersomnie idiopathique, syndrome de Kleine-Levin)-Hôpital Gui-de-Chauliac, Muscular and Neurodegenerative Disease Unit, University of Genoa (UNIGE), Department of Molecular Neuroscience, University College of London [London] (UCL)-Institute of Neurology, Indiana University, Indiana University [Bloomington], Indiana University System-Indiana University System, Molecular and Clinical Sciences Institute - St George’s [London, UK] (Genetics Research Centre), University of London [London], Imagine - Institut des maladies génétiques (IMAGINE - U1163), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Neuroimagerie en psychiatrie (U1000), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service métabolisme, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-CHU Necker - Enfants Malades [AP-HP], Department of Genetics and Metabolic Diseases and the Monique and Jacques Roboh Department of Genetic Research, Hadassah Hebrew University Medical Center [Jerusalem], Centre de recherche en neurobiologie - neurophysiologie de Marseille (CRN2M), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Efthymiou S., Salpietro V., Malintan N., Poncelet M., Kriouile Y., Fortuna S., De Zorzi R., Payne K., Henderson L.B., Cortese A., Maddirevula S., Alhashmi N., Wiethoff S., Ryten M., Botia J.A., Provitera V., Schuelke M., Vandrovcova J., Walsh L., Torti E., Iodice V., Najafi M., Karimiani E.G., Maroofian R., Siquier-Pernet K., Boddaert N., De Lonlay P., Cantagrel V., Aguennouz M., El Khorassani M., Schmidts M., Alkuraya F.S., Edvardson S., Nolano M., Devaux J., Houlden H., Groppa S., Karashova B.M., Nachbauer W., Boesch S., Arning L., Timmann D., Cormand B., Perez-Duenas B., Goraya J.S., Sultan T., Mine J., Avdjieva D., Kathom H., Tincheva R., Banu S., Pineda-Marfa M., Veggiotti P., Ferrari M.D., Van Den Maagdenberg A.M.J.M., Verrotti A., Marseglia G., Savasta S., Garcia-Silva M., Ruiz A.M., Garavaglia B., Borgione E., Portaro S., Sanchez B.M., Boles R., Papacostas S., Vikelis M., Rothman J., Kullmann D., Papanicolaou E.Z., Dardiotis E., Maqbool S., Ibrahim S., Kirmani S., Rana N.N., Atawneh O., Lim S.-Y., Shaikh F., Koutsis G., Breza M., Mangano S., Scuderi C., Morello G., Stojkovic T., Zollo M., Heimer G., Dauvilliers Y.A., Minetti C., Al-Khawaja I., Al-Mutairi F., Hamed S., Pipis M., Bettencourt C., Rinaldi S., Efthymiou, Stephanie, Salpietro, Vincenzo, Malintan, Nancy, Poncelet, Mallory, Kriouile, Yamna, Fortuna, Sara, De Zorzi, Rita, Payne, Katelyn, Henderson, Lindsay B, Cortese, Andrea, Maddirevula, Sateesh, Alhashmi, Nadia, Wiethoff, Sarah, Ryten, Mina, Botia, Juan A, Provitera, Vincenzo, Schuelke, Marku, Vandrovcova, Jana, Walsh, Laurence, Torti, Erin, Iodice, Valeria, Najafi, Maryam, Karimiani, Ehsan Ghayoor, Maroofian, Reza, Siquier-Pernet, Karine, Boddaert, Nathalie, De Lonlay, Pascale, Cantagrel, Vincent, Aguennouz, Mhammed, El Khorassani, Mohamed, Schmidts, Miriam, Alkuraya, Fowzan S, Edvardson, Simon, Nolano, Maria, Devaux, Jérôme, Houlden, Henry, Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Association française contre les myopathies (AFM-Téléthon)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Université Paris Diderot - Paris 7 (UPD7)-CHU Necker - Enfants Malades [AP-HP], Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Association française contre les myopathies (AFM-Téléthon)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Male, [SDV]Life Sciences [q-bio], [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Nerve Fibers, Myelinated, Gene Frequency, Neurodevelopmental Disorder, [SDV.BC.IC]Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], Nerve Growth Factor, Protein Isoforms, Child, ComputingMilieux_MISCELLANEOUS, Myelin Sheath, neurofascin, neurodevelopment, peripheral demyelination, Allele, Demyelinating Disease, Genomics, neurodevelopment, neurofascin, peripheral demyelination, Settore MED/39 - Neuropsichiatria Infantile, Pedigree, [SDV.IMM.IA]Life Sciences [q-bio]/Immunology/Adaptive immunology, Child, Preschool, Peripheral Nerve, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Female, Neuroglia, Human, Adult, Adolescent, Nervous System Malformations, Guillain-Barre Syndrome, Axon, Nervous System Malformation, Ranvier's Nodes, Humans, Nerve Growth Factors, Peripheral Nerves, Alleles, Autoantibodies, Infant, Protein Isoform, Original Articles, Axons, nervous system, Neurodevelopmental Disorders, Cell Adhesion Molecule, Mutation, Cell Adhesion Molecules, Demyelinating Diseases
Abstract

See Karakaya and Wirth (doi:10.1093/brain/awz273) for a scientific commentary on this article. Neurofascin (NFASC) isoforms are immunoglobulin cell adhesion molecules involved in node of Ranvier assembly. Efthymiou et al. identify biallelic NFASC variants in ten unrelated patients with a neurodevelopmental disorder characterized by variable degrees of central and peripheral involvement. Abnormal expression of Nfasc155 is accompanied by severe loss of myelinated fibres., Axon pathfinding and synapse formation are essential processes for nervous system development and function. The assembly of myelinated fibres and nodes of Ranvier is mediated by a number of cell adhesion molecules of the immunoglobulin superfamily including neurofascin, encoded by the NFASC gene, and its alternative isoforms Nfasc186 and Nfasc140 (located in the axonal membrane at the node of Ranvier) and Nfasc155 (a glial component of the paranodal axoglial junction). We identified 10 individuals from six unrelated families, exhibiting a neurodevelopmental disorder characterized with a spectrum of central (intellectual disability, developmental delay, motor impairment, speech difficulties) and peripheral (early onset demyelinating neuropathy) neurological involvement, who were found by exome or genome sequencing to carry one frameshift and four different homozygous non-synonymous variants in NFASC. Expression studies using immunostaining-based techniques identified absent expression of the Nfasc155 isoform as a consequence of the frameshift variant and a significant reduction of expression was also observed in association with two non-synonymous variants affecting the fibronectin type III domain. Cell aggregation studies revealed a severely impaired Nfasc155-CNTN1/CASPR1 complex interaction as a result of the identified variants. Immunofluorescence staining of myelinated fibres from two affected individuals showed a severe loss of myelinated fibres and abnormalities in the paranodal junction morphology. Our results establish that recessive variants affecting the Nfasc155 isoform can affect the formation of paranodal axoglial junctions at the nodes of Ranvier. The genetic disease caused by biallelic NFASC variants includes neurodevelopmental impairment and a spectrum of central and peripheral demyelination as part of its core clinical phenotype. Our findings support possible overlapping molecular mechanisms of paranodal damage at peripheral nerves in both the immune-mediated and the genetic disease, but the observation of prominent central neurological involvement in NFASC biallelic variant carriers highlights the importance of this gene in human brain development and function.

Published
2019

10. Posterior fossa abnormalities in hereditary spastic paraparesis with spastin mutations

Author

Scuderi, C., Fichera, M., Calabrese, G., Elia, M., Amato, C., Savio, M., Borgione, E., Vitello, G.A., and Musumeci, S.A.

Subjects
Spasticity -- Genetic aspects, Gene mutations -- Research, Gene mutations -- Physiological aspects, Central nervous system -- Physiological aspects, Health, Psychology and mental health
Published
2009

11. Early-infantile onset epilepsy and developmental delay caused by bi-allelic GAD1 variants

Author

Neuray, C., Maroofian, R., Scala, M., Sultan, T., Pai, G. S., Mojarrad, M., Khashab, H. E., Deholl, L., Yue, W., Alsaif, H. S., Zanetti, M. N., Bello, O., Person, R., Eslahi, A., Khazaei, Z., Feizabadi, M. H., Efthymiou, S., El-Bassyouni, H. T., Soliman, D. R., Tekes, S., Ozer, L., Baltaci, V., Khan, S., Beetz, C., Amr, K. S., Salpietro, V., Jamshidi, Y., Alkuraya, F. S., Houlden, H., Groppa, S., Karashova, B. M., Nachbauer, W., Boesch, S., Arning, L., Timmann, D., Cormand, B., Perez-Duenas, B., Synaps, Group, Di Rosa, G., Aguennouz, M., Goraya, J. S., Mine, J., Avdjieva, D., Kathom, H., Tincheva, R., Banu, S., Pineda-Marfa, M., Veggiotti, P., Ferrari, M. D., Verrotti, A., Marseglia, G., Savasta, S., Garcia-Silva, M., Ruiz, A. M., Garavaglia, B., Borgione, E., Portaro, S., Sanchez, B. M., Boles, R., Papacostas, S., Vikelis, M., Papanicolaou, E. Z., Dardiotis, E., Maqbool, S., Ibrahim, S., Kirmani, S., Rana, N. N., Atawneh, O., Koutsis, G., Breza, M., Mangano, S., Scuderi, C., Morello, G., Stojkovic, T., Zollo, M., Heimer, G., Dauvilliers, Y. A., Striano, P., Al-Khawaja, I., Al-Mutairi, F., Sherifa, H., Neuray C., Maroofian R., Scala M., Sultan T., Pai G.S., Mojarrad M., Khashab H.E., deHoll L., Yue W., Alsaif H.S., Zanetti M.N., Bello O., Person R., Eslahi A., Khazaei Z., Feizabadi M.H., Efthymiou S., El-Bassyouni H.T., Soliman D.R., Tekes S., Ozer L., Baltaci V., Khan S., Beetz C., Amr K.S., Salpietro V., Jamshidi Y., Alkuraya F.S., Houlden H., Mangano S., Dicle Üniversitesi, Tıp Fakültesi, Temel Tıp Bilimleri Bölümü, Tıbbi Biyoloji Ana Bilim Dalı, Tekeş, Selahattin, University College of London [London] (UCL), Paracelsus Medizinische Privatuniversität = Paracelsus Medical University (PMU), University of Genoa (UNIGE), IRCCS Istituto Giannina Gaslini [Genoa, Italy], Children's Hospital [Lahore], Institute of Child Health [Lahore], Medical University of South Carolina [Charleston] (MUSC), Mashhad University of Medical Sciences, Ain Shams University (ASU), University of Oxford [Oxford], GeneDx [Gaithersburg, MD, USA], Khorasan Razavi Agricultural and Natural Resources Research and Education Center, National Research Centre [Cairo, Egypt], Benha University (BU), Dicle University, CENTOGENE AG, University of London [London], King Faisal Specialist Hospital [Riyadh, Saudi Arabia] (Research Centre), and SYNaPS Study Group: Stanislav Groppa, Blagovesta Marinova Karashova, Wolfgang Nachbauer, Sylvia Boesch, Larissa Arning, Dagmar Timmann, Bru Cormand, Belen Pérez-Dueñas, Gabriella Di Rosa, Jatinder S Goraya, Tipu Sultan, Jun Mine, Daniela Avdjieva, Hadil Kathom, Radka Tincheva, Selina Banu, Mercedes Pineda-Marfa, Pierangelo Veggiotti, Michel D Ferrari, Alberto Verrotti, Giangluigi Marseglia, Salvatore Savasta, Mayte García-Silva, Alfons Macaya Ruiz, Barbara Garavaglia, Eugenia Borgione, Simona Portaro, Benigno Monteagudo Sanchez, Richard Boles, Savvas Papacostas, Michail Vikelis, Eleni Zamba Papanicolaou, Efthymios Dardiotis, Shazia Maqbool, Shahnaz Ibrahim, Salman Kirmani, Nuzhat Noureen Rana, Osama Atawneh, George Koutsis, Marianthi Breza, Salvatore Mangano, Carmela Scuderi, Eugenia Borgione, Giovanna Morello, Tanya Stojkovic, Massimi Zollo, Gali Heimer, Yves A Dauvilliers, Pasquale Striano, Issam Al-Khawaja, Fuad Al-Mutairi, Hamed Sherifa

Subjects
Male, 0301 basic medicine, Glutamate decarboxylase, Malalties cerebrals, Neurotransmissors, Neurodevelopmental delay, Epilepsy, 0302 clinical medicine, MESH: Child, Age of Onset, Child, cleft palate, GAD1, AcademicSubjects/SCI01870, Glutamate Decarboxylase, Glutamate receptor, Muscle weakness, purl.org/becyt/ford/3.1 [https], Neurotransmitters, MESH: Infant, Hypotonia, muscle weakne, Cleft palate, MESH: Epilepsy, Child, Preschool, Muscle Hypotonia, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], purl.org/becyt/ford/3 [https], Female, Brain diseases, Abnormalities, medicine.symptom, Multiple, medicine.drug, epilepsy, muscle weakness, neurodevelopmental delay, MESH: Glutamate Decarboxylase, medicine.medical_specialty, MESH: Abnormalities, Multiple, MESH: Mutation, MESH: Age of Onset, Biology, Inhibitory postsynaptic potential, GAD1, cleft palate, epilepsy, muscle weakness, neurodevelopmental delay, gamma-Aminobutyric acid, 03 medical and health sciences, Excitatory synapse, Internal medicine, medicine, Humans, Abnormalities, Multiple, Preschool, Alleles, MESH: Neurodevelopmental Disorders, MESH: Humans, MESH: Muscle Hypotonia, MESH: Alleles, MESH: Child, Preschool, Infant, medicine.disease, MESH: Male, Epilèpsia, Editor's Choice, 030104 developmental biology, Endocrinology, Neurodevelopmental Disorders, Mutation, AcademicSubjects/MED00310, Neurology (clinical), MESH: Female, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, 030217 neurology & neurosurgery, Reports
Abstract

Mice lacking GAD1 show neonatal mortality, but the human phenotype associated with GAD1 disruption is poorly characterized. Neuray et al. describe six patients with biallelic GAD1 mutations, presenting with early-infantile onset epilepsy, neurodevelopmental delay, muscle weakness and non-CNS manifestations., Gamma-aminobutyric acid (GABA) and glutamate are the most abundant amino acid neurotransmitters in the brain. GABA, an inhibitory neurotransmitter, is synthesized by glutamic acid decarboxylase (GAD). Its predominant isoform GAD67, contributes up to ∼90% of base-level GABA in the CNS, and is encoded by the GAD1 gene. Disruption of GAD1 results in an imbalance of inhibitory and excitatory neurotransmitters, and as Gad1−/− mice die neonatally of severe cleft palate, it has not been possible to determine any potential neurological dysfunction. Furthermore, little is known about the consequence of GAD1 disruption in humans. Here we present six affected individuals from six unrelated families, carrying bi-allelic GAD1 variants, presenting with developmental and epileptic encephalopathy, characterized by early-infantile onset epilepsy and hypotonia with additional variable non-CNS manifestations such as skeletal abnormalities, dysmorphic features and cleft palate. Our findings highlight an important role for GAD1 in seizure induction, neuronal and extraneuronal development, and introduce GAD1 as a new gene associated with developmental and epileptic encephalopathy.

Published
2020

13. AMPA receptor GluA2 subunit defects are a cause of neurodevelopmental disorders

Author

Salpietro, V. Dixon, C.L. Guo, H. Bello, O.D. Vandrovcova, J. Efthymiou, S. Maroofian, R. Heimer, G. Burglen, L. Valence, S. Torti, E. Hacke, M. Rankin, J. Tariq, H. Colin, E. Procaccio, V. Striano, P. Mankad, K. Lieb, A. Chen, S. Pisani, L. Bettencourt, C. Männikkö, R. Manole, A. Brusco, A. Grosso, E. Ferrero, G.B. Armstrong-Moron, J. Gueden, S. Bar-Yosef, O. Tzadok, M. Monaghan, K.G. Santiago-Sim, T. Person, R.E. Cho, M.T. Willaert, R. Yoo, Y. Chae, J.-H. Quan, Y. Wu, H. Wang, T. Bernier, R.A. Xia, K. Blesson, A. Jain, M. Motazacker, M.M. Jaeger, B. Schneider, A.L. Boysen, K. Muir, A.M. Myers, C.T. Gavrilova, R.H. Gunderson, L. Schultz-Rogers, L. Klee, E.W. Dyment, D. Osmond, M. Parellada, M. Llorente, C. Gonzalez-Peñas, J. Carracedo, A. Van Haeringen, A. Ruivenkamp, C. Nava, C. Heron, D. Nardello, R. Iacomino, M. Minetti, C. Skabar, A. Fabretto, A. Hanna, M.G. Bugiardini, E. Hostettler, I. O’Callaghan, B. Khan, A. Cortese, A. O’Connor, E. Yau, W.Y. Bourinaris, T. Kaiyrzhanov, R. Chelban, V. Madej, M. Diana, M.C. Vari, M.S. Pedemonte, M. Bruno, C. Balagura, G. Scala, M. Fiorillo, C. Nobili, L. Malintan, N.T. Zanetti, M.N. Krishnakumar, S.S. Lignani, G. Jepson, J.E.C. Broda, P. Baldassari, S. Rossi, P. Fruscione, F. Madia, F. Traverso, M. De-Marco, P. Pérez-Dueñas, B. Munell, F. Kriouile, Y. El-Khorassani, M. Karashova, B. Avdjieva, D. Kathom, H. Tincheva, R. Van-Maldergem, L. Nachbauer, W. Boesch, S. Gagliano, A. Amadori, E. Goraya, J.S. Sultan, T. Kirmani, S. Ibrahim, S. Jan, F. Mine, J. Banu, S. Veggiotti, P. Zuccotti, G.V. Ferrari, M.D. Van Den Maagdenberg, A.M.J. Verrotti, A. Marseglia, G.L. Savasta, S. Soler, M.A. Scuderi, C. Borgione, E. Chimenz, R. Gitto, E. Dipasquale, V. Sallemi, A. Fusco, M. Cuppari, C. Cutrupi, M.C. Ruggieri, M. Cama, A. Capra, V. Mencacci, N.E. Boles, R. Gupta, N. Kabra, M. Papacostas, S. Zamba-Papanicolaou, E. Dardiotis, E. Maqbool, S. Rana, N. Atawneh, O. Lim, S.Y. Shaikh, F. Koutsis, G. Breza, M. Coviello, D.A. Dauvilliers, Y.A. AlKhawaja, I. AlKhawaja, M. Al-Mutairi, F. Stojkovic, T. Ferrucci, V. Zollo, M. Alkuraya, F.S. Kinali, M. Sherifa, H. Benrhouma, H. Turki, I.B.Y. Tazir, M. Obeid, M. Bakhtadze, S. Saadi, N.W. Zaki, M.S. Triki, C.C. Benfenati, F. Gustincich, S. Kara, M. Belcastro, V. Specchio, N. Capovilla, G. Karimiani, E.G. Salih, A.M. Okubadejo, N.U. Ojo, O.O. Oshinaike, O.O. Oguntunde, O. Wahab, K. Bello, A.H. Abubakar, S. Obiabo, Y. Nwazor, E. Ekenze, O. Williams, U. Iyagba, A. Taiwo, L. Komolafe, M. Senkevich, K. Shashkin, C. Zharkynbekova, N. Koneyev, K. Manizha, G. Isrofilov, M. Guliyeva, U. Salayev, K. Khachatryan, S. Rossi, S. Silvestri, G. Haridy, N. Ramenghi, L.A. Xiromerisiou, G. David, E. Aguennouz, M. Fidani, L. Spanaki, C. Tucci, A. Raspall-Chaure, M. Chez, M. Tsai, A. Fassi, E. Shinawi, M. Constantino, J.N. De Zorzi, R. Fortuna, S. Kok, F. Keren, B. Bonneau, D. Choi, M. Benzeev, B. Zara, F. Mefford, H.C. Scheffer, I.E. Clayton-Smith, J. Macaya, A. Rothman, J.E. Eichler, E.E. Kullmann, D.M. Houlden, H. SYNAPS Study Group

Abstract

AMPA receptors (AMPARs) are tetrameric ligand-gated channels made up of combinations of GluA1-4 subunits encoded by GRIA1-4 genes. GluA2 has an especially important role because, following post-transcriptional editing at the Q607 site, it renders heteromultimeric AMPARs Ca2+-impermeable, with a linear relationship between current and trans-membrane voltage. Here, we report heterozygous de novo GRIA2 mutations in 28 unrelated patients with intellectual disability (ID) and neurodevelopmental abnormalities including autism spectrum disorder (ASD), Rett syndrome-like features, and seizures or developmental epileptic encephalopathy (DEE). In functional expression studies, mutations lead to a decrease in agonist-evoked current mediated by mutant subunits compared to wild-type channels. When GluA2 subunits are co-expressed with GluA1, most GRIA2 mutations cause a decreased current amplitude and some also affect voltage rectification. Our results show that de-novo variants in GRIA2 can cause neurodevelopmental disorders, complementing evidence that other genetic causes of ID, ASD and DEE also disrupt glutamatergic synaptic transmission. © 2019, The Author(s).

Published
2019

19. AMPA receptor GluA2 subunit defects are a cause of neurodevelopmental disorders

Author

Salpietro, V, Dixon, CL, Guo, H, Bello, OD, Vandrovcova, J, Efthymiou, S, Maroofian, R, Heimer, G, Burglen, L, Valence, S, Torti, E, Hacke, M, Rankin, J, Tariq, H, Colin, E, Procaccio, V, Striano, P, Mankad, K, Lieb, A, Chen, S, Pisani, L, Bettencourt, C, Mannikko, R, Manole, A, Brusco, A, Grosso, E, Ferrero, GB, Armstrong-Moron, J, Gueden, S, Bar-Yosef, O, Tzadok, M, Monaghan, KG, Santiago-Sim, T, Person, RE, Cho, MT, Willaert, R, Yoo, Y, Chae, J-H, Quan, Y, Wu, H, Wang, T, Bernier, RA, Xia, K, Blesson, A, Jain, M, Motazacker, MM, Jaeger, B, Schneider, AL, Boysen, K, Muir, AM, Myers, CT, Gavrilova, RH, Gunderson, L, Schultz-Rogers, L, Klee, EW, Dyment, D, Osmond, M, Parellada, M, Llorente, C, Gonzalez-Penas, J, Carracedo, A, Van Haeringen, A, Ruivenkamp, C, Nava, C, Heron, D, Nardello, R, Iacomino, M, Minetti, C, Skabar, A, Fabretto, A, Chez, M, Tsai, A, Fassi, E, Shinawi, M, Constantino, JN, De Zorzi, R, Fortuna, S, Kok, F, Keren, B, Bonneau, D, Choi, M, Benzeev, B, Zara, F, Mefford, HC, Scheffer, IE, Clayton-Smith, J, Macaya, A, Rothman, JE, Eichler, EE, Kullmann, DM, Houlden, H, Raspall-Chaure, M, Hanna, MG, Bugiardini, E, Hostettler, I, O'Callaghan, B, Khan, A, Cortese, A, O'Connor, E, Yau, WY, Bourinaris, T, Kaiyrzhanov, R, Chelban, V, Madej, M, Diana, MC, Vari, MS, Pedemonte, M, Bruno, C, Balagura, G, Scala, M, Fiorillo, C, Nobili, L, Malintan, NT, Zanetti, MN, Krishnakumar, SS, Lignani, G, Jepson, JEC, Broda, P, Baldassari, S, Rossi, P, Fruscione, F, Madia, F, Traverso, M, De-Marco, P, Perez-Duenas, B, Munell, F, Kriouile, Y, El-Khorassani, M, Karashova, B, Avdjieva, D, Kathom, H, Tincheva, R, Van-Maldergem, L, Nachbauer, W, Boesch, S, Gagliano, A, Amadori, E, Goraya, JS, Sultan, T, Kirmani, S, Ibrahim, S, Jan, F, Mine, J, Banu, S, Veggiotti, P, Zuccotti, G, Ferrari, MD, Van Den Maagdenberg, AMJ, Verrotti, A, Marseglia, GL, Savasta, S, Soler, MA, Scuderi, C, Borgione, E, Chimenz, R, Gitto, E, Dipasquale, V, Sallemi, A, Fusco, M, Cuppari, C, Cutrupi, MC, Ruggieri, M, Cama, A, Capra, V, Mencacci, NE, Boles, R, Gupta, N, Kabra, M, Papacostas, S, Zamba-Papanicolaou, E, Dardiotis, E, Maqbool, S, Rana, N, Atawneh, O, Lim, SY, Shaikh, F, Koutsis, G, Breza, M, Coviello, DA, Dauvilliers, YA, AlKhawaja, I, AlKhawaja, M, Al-Mutairi, F, Stojkovic, T, Ferrucci, V, Zollo, M, Alkuraya, FS, Kinali, M, Sherifa, H, Benrhouma, H, Turki, IBY, Tazir, M, Obeid, M, Bakhtadze, S, Saadi, NW, Zaki, MS, Triki, CC, Benfenati, F, Gustincich, S, Kara, M, Belcastro, V, Specchio, N, Capovilla, G, Karimiani, EG, Salih, AM, Okubadejo, NU, Ojo, OO, Oshinaike, OO, Oguntunde, O, Wahab, K, Bello, AH, Abubakar, S, Obiabo, Y, Nwazor, E, Ekenze, O, Williams, U, Iyagba, A, Taiwo, L, Komolafe, M, Senkevich, K, Shashkin, C, Zharkynbekova, N, Koneyev, K, Manizha, G, Isrofilov, M, Guliyeva, U, Salayev, K, Khachatryan, S, Rossi, S, Silvestri, G, Haridy, N, Ramenghi, LA, Xiromerisiou, G, David, E, Aguennouz, M, Fidani, L, Spanaki, C, Tucci, A, Salpietro, V, Dixon, CL, Guo, H, Bello, OD, Vandrovcova, J, Efthymiou, S, Maroofian, R, Heimer, G, Burglen, L, Valence, S, Torti, E, Hacke, M, Rankin, J, Tariq, H, Colin, E, Procaccio, V, Striano, P, Mankad, K, Lieb, A, Chen, S, Pisani, L, Bettencourt, C, Mannikko, R, Manole, A, Brusco, A, Grosso, E, Ferrero, GB, Armstrong-Moron, J, Gueden, S, Bar-Yosef, O, Tzadok, M, Monaghan, KG, Santiago-Sim, T, Person, RE, Cho, MT, Willaert, R, Yoo, Y, Chae, J-H, Quan, Y, Wu, H, Wang, T, Bernier, RA, Xia, K, Blesson, A, Jain, M, Motazacker, MM, Jaeger, B, Schneider, AL, Boysen, K, Muir, AM, Myers, CT, Gavrilova, RH, Gunderson, L, Schultz-Rogers, L, Klee, EW, Dyment, D, Osmond, M, Parellada, M, Llorente, C, Gonzalez-Penas, J, Carracedo, A, Van Haeringen, A, Ruivenkamp, C, Nava, C, Heron, D, Nardello, R, Iacomino, M, Minetti, C, Skabar, A, Fabretto, A, Chez, M, Tsai, A, Fassi, E, Shinawi, M, Constantino, JN, De Zorzi, R, Fortuna, S, Kok, F, Keren, B, Bonneau, D, Choi, M, Benzeev, B, Zara, F, Mefford, HC, Scheffer, IE, Clayton-Smith, J, Macaya, A, Rothman, JE, Eichler, EE, Kullmann, DM, Houlden, H, Raspall-Chaure, M, Hanna, MG, Bugiardini, E, Hostettler, I, O'Callaghan, B, Khan, A, Cortese, A, O'Connor, E, Yau, WY, Bourinaris, T, Kaiyrzhanov, R, Chelban, V, Madej, M, Diana, MC, Vari, MS, Pedemonte, M, Bruno, C, Balagura, G, Scala, M, Fiorillo, C, Nobili, L, Malintan, NT, Zanetti, MN, Krishnakumar, SS, Lignani, G, Jepson, JEC, Broda, P, Baldassari, S, Rossi, P, Fruscione, F, Madia, F, Traverso, M, De-Marco, P, Perez-Duenas, B, Munell, F, Kriouile, Y, El-Khorassani, M, Karashova, B, Avdjieva, D, Kathom, H, Tincheva, R, Van-Maldergem, L, Nachbauer, W, Boesch, S, Gagliano, A, Amadori, E, Goraya, JS, Sultan, T, Kirmani, S, Ibrahim, S, Jan, F, Mine, J, Banu, S, Veggiotti, P, Zuccotti, G, Ferrari, MD, Van Den Maagdenberg, AMJ, Verrotti, A, Marseglia, GL, Savasta, S, Soler, MA, Scuderi, C, Borgione, E, Chimenz, R, Gitto, E, Dipasquale, V, Sallemi, A, Fusco, M, Cuppari, C, Cutrupi, MC, Ruggieri, M, Cama, A, Capra, V, Mencacci, NE, Boles, R, Gupta, N, Kabra, M, Papacostas, S, Zamba-Papanicolaou, E, Dardiotis, E, Maqbool, S, Rana, N, Atawneh, O, Lim, SY, Shaikh, F, Koutsis, G, Breza, M, Coviello, DA, Dauvilliers, YA, AlKhawaja, I, AlKhawaja, M, Al-Mutairi, F, Stojkovic, T, Ferrucci, V, Zollo, M, Alkuraya, FS, Kinali, M, Sherifa, H, Benrhouma, H, Turki, IBY, Tazir, M, Obeid, M, Bakhtadze, S, Saadi, NW, Zaki, MS, Triki, CC, Benfenati, F, Gustincich, S, Kara, M, Belcastro, V, Specchio, N, Capovilla, G, Karimiani, EG, Salih, AM, Okubadejo, NU, Ojo, OO, Oshinaike, OO, Oguntunde, O, Wahab, K, Bello, AH, Abubakar, S, Obiabo, Y, Nwazor, E, Ekenze, O, Williams, U, Iyagba, A, Taiwo, L, Komolafe, M, Senkevich, K, Shashkin, C, Zharkynbekova, N, Koneyev, K, Manizha, G, Isrofilov, M, Guliyeva, U, Salayev, K, Khachatryan, S, Rossi, S, Silvestri, G, Haridy, N, Ramenghi, LA, Xiromerisiou, G, David, E, Aguennouz, M, Fidani, L, Spanaki, C, and Tucci, A

Abstract

AMPA receptors (AMPARs) are tetrameric ligand-gated channels made up of combinations of GluA1-4 subunits encoded by GRIA1-4 genes. GluA2 has an especially important role because, following post-transcriptional editing at the Q607 site, it renders heteromultimeric AMPARs Ca2+-impermeable, with a linear relationship between current and trans-membrane voltage. Here, we report heterozygous de novo GRIA2 mutations in 28 unrelated patients with intellectual disability (ID) and neurodevelopmental abnormalities including autism spectrum disorder (ASD), Rett syndrome-like features, and seizures or developmental epileptic encephalopathy (DEE). In functional expression studies, mutations lead to a decrease in agonist-evoked current mediated by mutant subunits compared to wild-type channels. When GluA2 subunits are co-expressed with GluA1, most GRIA2 mutations cause a decreased current amplitude and some also affect voltage rectification. Our results show that de-novo variants in GRIA2 can cause neurodevelopmental disorders, complementing evidence that other genetic causes of ID, ASD and DEE also disrupt glutamatergic synaptic transmission.

Published
2019

20. PDXK mutations cause polyneuropathy responsive to pyridoxal 5'-phosphate supplementation

Author

Chelban, V., Wilson, M. P., Warman Chardon, J., Vandrovcova, J., Zanetti, M. N., Zamba-Papanicolaou, E., Efthymiou, S., Pope, S., Conte, M. R., Abis, G., Liu, Y. -T., Tribollet, E., Haridy, N. A., Botia, J. A., Ryten, M., Nicolaou, P., Minaidou, A., Christodoulou, K., Kernohan, K. D., Eaton, A., Osmond, M., Ito, Y., Bourque, P., Jepson, J. E. C., Bello, O., Bremner, F., Cordivari, C., Reilly, M. M., Foiani, M., Heslegrave, A., Zetterberg, H., Heales, S. J. R., Wood, N. W., Rothman, J. E., Boycott, K. M., Mills, P. B., Clayton, P. T., Houlden, H., Kriouile, Y., Khorassani, M. E., Aguennouz, M., Groppa, S., Marinova Karashova, B., Van Maldergem, L., Nachbauer, W., Boesch, S., Arning, L., Timmann, D., Cormand, B., Perez-Duenas, B., Di Rosa, G., Goraya, J. S., Sultan, T., Mine, J., Avdjieva, D., Kathom, H., Tincheva, R., Banu, S., Pineda-Marfa, M., Veggiotti, P., Ferrari, M. D., van den Maagdenberg, A. M. J. M., Verrotti, A., Marseglia, G., Savasta, S., Garcia-Silva, M., Ruiz, A. M., Garavaglia, B., Borgione, E., Portaro, S., Sanchez, B. M., Boles, R., Papacostas, S., Vikelis, M., Giunti, P., Salpietro, V., Oconnor, E., Kullmann, D., Kaiyrzhanov, R., Sullivan, R., Khan, A. M., Yau, W. Y., Hostettler, I., Papanicolaou, E. Z., Dardiotis, E., Maqbool, S., Ibrahim, S., Kirmani, S., Rana, N. N., Atawneh, O., Lim, S. -Y., Shaikh, F., Koutsis, G., Breza, M., Mangano, S., Scuderi, C., Morello, G., Stojkovic, T., Torti, E., Zollo, M., Heimer, G., Dauvilliers, Y. A., Striano, P., Al-Khawaja, I., Al-Mutairi, F., Alkuraya, F. S., Sherifa, H., Rizig, M., Okubadejo, N. U., Ojo, O. O., Oshinaike, O. O., Wahab, K., Bello, A. H., Abubakar, S., Obiabo, Y., Nwazor, E., Ekenze, O., Williams, U., Iyagba, A., Taiwo, L., Komolafe, M., Oguntunde, O., Pchelina, S., Senkevich, K., Shashkin, C., Zharkynbekova, N., Koneyev, K., Manizha, G., Isrofilov, M., Guliyeva, U., Salayev, K., Khachatryan, S., Rossi, S., Silvestri, Gabriella, Bourinaris, T., Xiromerisiou, G., Fidani, L., Spanaki, C., Tucci, A., Silvestri G. (ORCID:0000-0002-1950-1468), Chelban, V., Wilson, M. P., Warman Chardon, J., Vandrovcova, J., Zanetti, M. N., Zamba-Papanicolaou, E., Efthymiou, S., Pope, S., Conte, M. R., Abis, G., Liu, Y. -T., Tribollet, E., Haridy, N. A., Botia, J. A., Ryten, M., Nicolaou, P., Minaidou, A., Christodoulou, K., Kernohan, K. D., Eaton, A., Osmond, M., Ito, Y., Bourque, P., Jepson, J. E. C., Bello, O., Bremner, F., Cordivari, C., Reilly, M. M., Foiani, M., Heslegrave, A., Zetterberg, H., Heales, S. J. R., Wood, N. W., Rothman, J. E., Boycott, K. M., Mills, P. B., Clayton, P. T., Houlden, H., Kriouile, Y., Khorassani, M. E., Aguennouz, M., Groppa, S., Marinova Karashova, B., Van Maldergem, L., Nachbauer, W., Boesch, S., Arning, L., Timmann, D., Cormand, B., Perez-Duenas, B., Di Rosa, G., Goraya, J. S., Sultan, T., Mine, J., Avdjieva, D., Kathom, H., Tincheva, R., Banu, S., Pineda-Marfa, M., Veggiotti, P., Ferrari, M. D., van den Maagdenberg, A. M. J. M., Verrotti, A., Marseglia, G., Savasta, S., Garcia-Silva, M., Ruiz, A. M., Garavaglia, B., Borgione, E., Portaro, S., Sanchez, B. M., Boles, R., Papacostas, S., Vikelis, M., Giunti, P., Salpietro, V., Oconnor, E., Kullmann, D., Kaiyrzhanov, R., Sullivan, R., Khan, A. M., Yau, W. Y., Hostettler, I., Papanicolaou, E. Z., Dardiotis, E., Maqbool, S., Ibrahim, S., Kirmani, S., Rana, N. N., Atawneh, O., Lim, S. -Y., Shaikh, F., Koutsis, G., Breza, M., Mangano, S., Scuderi, C., Morello, G., Stojkovic, T., Torti, E., Zollo, M., Heimer, G., Dauvilliers, Y. A., Striano, P., Al-Khawaja, I., Al-Mutairi, F., Alkuraya, F. S., Sherifa, H., Rizig, M., Okubadejo, N. U., Ojo, O. O., Oshinaike, O. O., Wahab, K., Bello, A. H., Abubakar, S., Obiabo, Y., Nwazor, E., Ekenze, O., Williams, U., Iyagba, A., Taiwo, L., Komolafe, M., Oguntunde, O., Pchelina, S., Senkevich, K., Shashkin, C., Zharkynbekova, N., Koneyev, K., Manizha, G., Isrofilov, M., Guliyeva, U., Salayev, K., Khachatryan, S., Rossi, S., Silvestri, Gabriella, Bourinaris, T., Xiromerisiou, G., Fidani, L., Spanaki, C., Tucci, A., and Silvestri G. (ORCID:0000-0002-1950-1468)

Abstract

Objective: To identify disease-causing variants in autosomal recessive axonal polyneuropathy with optic atrophy and provide targeted replacement therapy. Methods: We performed genome-wide sequencing, homozygosity mapping, and segregation analysis for novel disease-causing gene discovery. We used circular dichroism to show secondary structure changes and isothermal titration calorimetry to investigate the impact of variants on adenosine triphosphate (ATP) binding. Pathogenicity was further supported by enzymatic assays and mass spectroscopy on recombinant protein, patient-derived fibroblasts, plasma, and erythrocytes. Response to supplementation was measured with clinical validated rating scales, electrophysiology, and biochemical quantification. Results: We identified biallelic mutations in PDXK in 5 individuals from 2 unrelated families with primary axonal polyneuropathy and optic atrophy. The natural history of this disorder suggests that untreated, affected individuals become wheelchair-bound and blind. We identified conformational rearrangement in the mutant enzyme around the ATP-binding pocket. Low PDXK ATP binding resulted in decreased erythrocyte PDXK activity and low pyridoxal 5′-phosphate (PLP) concentrations. We rescued the clinical and biochemical profile with PLP supplementation in 1 family, improvement in power, pain, and fatigue contributing to patients regaining their ability to walk independently during the first year of PLP normalization. Interpretation: We show that mutations in PDXK cause autosomal recessive axonal peripheral polyneuropathy leading to disease via reduced PDXK enzymatic activity and low PLP. We show that the biochemical profile can be rescued with PLP supplementation associated with clinical improvement. As B6 is a cofactor in diverse essential biological pathways, our findings may have direct implications for neuropathies of unknown etiology characterized by reduced PLP levels. ANN NEUROL 2019;86:225–240.

Published
2019

21. PRUNE is crucial for normal brain development and mutated in microcephaly with neurodevelopmental impairment

Author

Zollo, M, Ahmed, M, Ferrucci, V, Salpietro, V, Asadzadeh, F, Carotenuto, M, Maroofian, R, Al-Amri, A, Singh, R, Scognamiglio, I, Mojarrad, M, Musella, L, Duilio, A, Di Somma, A, Karaca, E, Rajab, A, Al-Khayat, A, Mohan Mohapatra, T, Eslahi, A, Ashrafzadeh, F, Rawlins, LE, Prasad, R, Gupta, R, Kumari, P, Srivastava, M, Cozzolino, F, Kumar Rai, S, Monti, M, Harlalka, GV, Simpson, MA, Rich, P, Al-Salmi, F, Patton, MA, Chioza, BA, Efthymiou, S, Granata, F, Di Rosa, G, Wiethoff, S, Borgione, E, Scuderi, C, Mankad, K, Hanna, MG, Pucci, P, Houlden, H, Lupski, JR, Crosby, AH, Baple, EL, Zollo, Massimo, Ahmed, M., Ferrucci, Veronica, Salpietro, V., Asadzadeh, F., Carotenuto, Marianeve, Maroofian, R., Al Amri, A., Singh, R., Scognamiglio, I., Mojarrad, M., Musella, L., Duilio, Angela, Di Somma, Angela, Karaca, E., Rajab, A., Al Khayat, A., Mohapatra, T. M., Eslahi, A., Ashrafzadeh, F., Rawlins, L. E., Prasad, R., Gupta, R., Kumari, P., Srivastava, M, Cozzolino, Flora, Rai, S. K., Monti, Maria, Harlalka, G. V., Simpson, M. A., Rich, P., Al Salmi, F., Patton, M. A., Chioza, B. A., Efthymiou, S., Granata, F., Di Rosa, G., Wiethoff, S., Borgione, E., Scuderi, C., Mankad, K., Hanna, M. G., Pucci, Pietro, Houlden, H., Lupski, J. R., Crosby, A. H., and Baple, E. L.

Subjects
Male, Adolescent, Developmental delay, Developmental Disabilities, Nervous System, Microtubules, Normal brain development, Young Adult, Cell Movement, Recessive, Humans, microcephaly, Child, Preschool, Cytoskeleton, Cerebral Cortex, normal brain development, fungi, Brain, Infant, Cell Differentiation, Original Articles, Microtubule polymerization, PRUNE1, developmental delay, microcephaly, microtubule polymerization, tubulinopathy, normal brain development, Microcephaly, PRUNE1, Tubulinopathy, Carrier Proteins, Child, Preschool, Female, Genes, Recessive, Heredodegenerative Disorders, Nervous System, Mutation, Pedigree, microtubule polymerization, tubulinopathy, developmental delay, Genes, nervous system, Heredodegenerative Disorders
Abstract

Zollo et al. report that mutations in PRUNE1, a phosphoesterase superfamily molecule, underlie primary microcephaly and profound global developmental delay in four unrelated families from Oman, India, Iran and Italy. The study highlights a potential role for prune during microtubule polymerization, suggesting that prune syndrome may be a tubulinopathy., PRUNE is a member of the DHH (Asp-His-His) phosphoesterase protein superfamily of molecules important for cell motility, and implicated in cancer progression. Here we investigated multiple families from Oman, India, Iran and Italy with individuals affected by a new autosomal recessive neurodevelopmental and degenerative disorder in which the cardinal features include primary microcephaly and profound global developmental delay. Our genetic studies identified biallelic mutations of PRUNE1 as responsible. Our functional assays of disease-associated variant alleles revealed impaired microtubule polymerization, as well as cell migration and proliferation properties, of mutant PRUNE. Additionally, our studies also highlight a potential new role for PRUNE during microtubule polymerization, which is essential for the cytoskeletal rearrangements that occur during cellular division and proliferation. Together these studies define PRUNE as a molecule fundamental for normal human cortical development and define cellular and clinical consequences associated with PRUNE mutation.

Published
2017

34. DUCHENNE MUSCULAR DYSTROPHY - GENETICS

Author

Neri, M., primary, Mauro, A., additional, Gualandi, F., additional, Bruno, C., additional, Santorelli, F., additional, Tedeschi, S., additional, D'Amico, A., additional, Giardina, E., additional, Castori, M., additional, Cau, M., additional, Scuderi, C., additional, Sansone, V., additional, Messina, S., additional, Pegoraro, E., additional, Politano, L., additional, Bertini, E., additional, Comi, G., additional, Nigro, V., additional, Mercuri, E., additional, and Ferlini, A., additional

Published
2018
Full Text
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40. The Importance of the Enteric Glia and its Related ProductS100b Protein in Gut Inflammation

Author

Cirillo C, Capoccia E, Scuderi C, Steardo L, Esposito G., SARNELLI, GIOVANNI, CUOMO, ROSARIO, Cirillo, C, Capoccia, E, Sarnelli, Giovanni, Scuderi, C, Cuomo, Rosario, Steardo, L, and Esposito, G.

Subjects
S100 Beta protein, Gut inflammation, Enteric Glial Cells
Abstract

The urgent need of new pharmacological approaches that may enlarge the tools against inflammatory bowel diseases, lowering side effects and costs of the actually-used drugs is a very important challenge for gastroenterologists and pharmacologists. This short communication is aimed to highlight the importance of enteric glia and its derived signaling molecule S100B in the pathogenesis of chronic inflammation occurring in the gut. Once hyper-secreted, S100B, a small signaling diffusible Ca2+/Zn2+-binding protein, orchestrates a massive pro-inflammatory reaction in the gut, through the paracrine induction of nitric oxide and the recruitment of immune cells in the mucosa. A better understanding of the mechanisms by which enteric glia may trigger and perpetuate gut inflammation may address scientists to selectively target this cell population and decrease S100B overproduction may thus represent a significant innovation in this sense and open the field to novel therapies for inflammatory bowel diseases.

Published
2012

41. Disruption of POGZ Is Associated with Intellectual Disability and Autism Spectrum Disorders

Author

Stessman, H.A., Willemsen, M.H., Fenckova, M., Penn, O., Hoischen, A., Xiong, B., Wang, T., Hoekzema, K., Vives, L., Vogel, I., Brunner, H.G., Burgt, I. van der, Ockeloen, C.W., Schuurs-Hoeijmakers, J.H.M., Wassink-Ruiter, J.S., Stumpel, C., Stevens, S.J., Vles, H.S., Marcelis, C.M., Bokhoven, H. van, Cantagrel, V., Colleaux, L., Nicouleau, M., Lyonnet, S., Bernier, R.A., Gerdts, J., Coe, B.P., Romano, C, Alberti, A., Grillo, L., Scuderi, C., Nordenskjold, M., Kvarnung, M., Guo, H., Xia, K., Piton, A., Gerard, B., Genevieve, D., Delobel, B., Lehalle, D., Perrin, L., Prieur, F., Thevenon, J., Gecz, J., Shaw, M., Pfundt, R., Keren, B., Jacquette, A., Schenck, A., Eichler, E.E., Kleefstra, T., Stessman, H.A., Willemsen, M.H., Fenckova, M., Penn, O., Hoischen, A., Xiong, B., Wang, T., Hoekzema, K., Vives, L., Vogel, I., Brunner, H.G., Burgt, I. van der, Ockeloen, C.W., Schuurs-Hoeijmakers, J.H.M., Wassink-Ruiter, J.S., Stumpel, C., Stevens, S.J., Vles, H.S., Marcelis, C.M., Bokhoven, H. van, Cantagrel, V., Colleaux, L., Nicouleau, M., Lyonnet, S., Bernier, R.A., Gerdts, J., Coe, B.P., Romano, C, Alberti, A., Grillo, L., Scuderi, C., Nordenskjold, M., Kvarnung, M., Guo, H., Xia, K., Piton, A., Gerard, B., Genevieve, D., Delobel, B., Lehalle, D., Perrin, L., Prieur, F., Thevenon, J., Gecz, J., Shaw, M., Pfundt, R., Keren, B., Jacquette, A., Schenck, A., Eichler, E.E., and Kleefstra, T.

Abstract

Item does not contain fulltext, Intellectual disability (ID) and autism spectrum disorders (ASD) are genetically heterogeneous, and a significant number of genes have been associated with both conditions. A few mutations in POGZ have been reported in recent exome studies; however, these studies do not provide detailed clinical information. We collected the clinical and molecular data of 25 individuals with disruptive mutations in POGZ by diagnostic whole-exome, whole-genome, or targeted sequencing of 5,223 individuals with neurodevelopmental disorders (ID primarily) or by targeted resequencing of this locus in 12,041 individuals with ASD and/or ID. The rarity of disruptive mutations among unaffected individuals (2/49,401) highlights the significance (p = 4.19 x 10(-13); odds ratio = 35.8) and penetrance (65.9%) of this genetic subtype with respect to ASD and ID. By studying the entire cohort, we defined common phenotypic features of POGZ individuals, including variable levels of developmental delay (DD) and more severe speech and language delay in comparison to the severity of motor delay and coordination issues. We also identified significant associations with vision problems, microcephaly, hyperactivity, a tendency to obesity, and feeding difficulties. Some features might be explained by the high expression of POGZ, particularly in the cerebellum and pituitary, early in fetal brain development. We conducted parallel studies in Drosophila by inducing conditional knockdown of the POGZ ortholog row, further confirming that dosage of POGZ, specifically in neurons, is essential for normal learning in a habituation paradigm. Combined, the data underscore the pathogenicity of loss-of-function mutations in POGZ and define a POGZ-related phenotype enriched in specific features.

Published
2016

42. Cannabidiol in vivo blunts beta-amyloid induced neuroinflammation by suppressing IL-1beta and iNOS expression

Author

ESPOSITO G, SCUDERI C, SAVANI C, STEARDO L. JR, COTTONE P, CUOMO V, STEARDO L., DE FILIPPIS, DANIELE, IUVONE, TERESA, Esposito, G, Scuderi, C, Savani, C, STEARDO L., Jr, DE FILIPPIS, Daniele, Cottone, P, Iuvone, Teresa, Cuomo, V, and Steardo, L.

Subjects
Interleukin-1beta, Fluorescent Antibody Technique, Nitric Oxide Synthase Type II, Enzyme-Linked Immunosorbent Assay, A beta, Nitric Oxide, Hippocampus, reactive gliosis, Mice, Glial Fibrillary Acidic Protein, IL-1 beta, Animals, Cannabidiol, RNA, Messenger, Inflammation, Amyloid beta-Peptides, Dose-Response Relationship, Drug, GFAP, Research Papers, Peptide Fragments, iNOS, Mice, Inbred C57BL, Disease Models, Animal, Neuroprotective Agents, Gene Expression Regulation, Neurotoxicity Syndromes, cannabidiol, mice
Abstract

Pharmacological inhibition of beta-amyloid (Abeta) induced reactive gliosis may represent a novel rationale to develop drugs able to blunt neuronal damage and slow the course of Alzheimer's disease (AD). Cannabidiol (CBD), the main non-psychotropic natural cannabinoid, exerts in vitro a combination of neuroprotective effects in different models of Abeta neurotoxicity. The present study, performed in a mouse model of AD-related neuroinflammation, was aimed at confirming in vivo the previously reported antiinflammatory properties of CBD.Mice were inoculated with human Abeta (1-42) peptide into the right dorsal hippocampus, and treated daily with vehicle or CBD (2.5 or 10 mg kg(-1), i.p.) for 7 days. mRNA for glial fibrillary acidic protein (GFAP) was assessed by in situ hybridization. Protein expression of GFAP, inducible nitric oxide synthase (iNOS) and IL-1beta was determined by immunofluorescence analysis. In addition, ELISA assay of IL-1beta level and the measurement of NO were performed in dissected and homogenized ipsilateral hippocampi, derived from vehicle and Abeta inoculated mice, in the absence or presence of CBD.In contrast to vehicle, CBD dose-dependently and significantly inhibited GFAP mRNA and protein expression in Abeta injected animals. Moreover, under the same experimental conditions, CBD impaired iNOS and IL-1beta protein expression, and the related NO and IL-1beta release.The results of the present study confirm in vivo anti-inflammatory actions of CBD, emphasizing the importance of this compound as a novel promising pharmacological tool capable of attenuating Abeta evoked neuroinflammatory responses.

Published
2007

47. Congenital muscular dystrophies with defective glycosylation of dystroglycan: apopulation study

Author

Mercuri, E, Messina, S, Bruno, C, Mora, M, Pegoraro, Elena, Comi, Gp, D'Amico, A, Aiello, C, Biancheri, R, Berardinelli, A, Boffi, P, Cassandrini, D, Laverda, ANNA MARIA, Moggio, M, Morandi, L, Moroni, I, Pane, M, Pezzani, Raffaele, Pichiecchio, A, Pini, A, Minetti, C, Mongini, T, Mottarelli, E, Ricci, E, Ruggieri, A, Saredi, S, Scuderi, C, Tessa, A, Toscano, A, Tortorella, G, Trevisan, CARLO PIETRO, Uggetti, C, Vasco, G, Santorelli, Fm, and Bertini, E.

Published
2009

49. Correlazioni genotipo-fenotipo nelle distrofie muscolari congenite con riduzione dell'alfa-distroglicano: uno studio italiano multicentrico

Author

Messina, Sonia, Bruno, C, Mora, M, Pegoraro, E, Comi, Gp, D'Amico, A, Aiello, C, Biancheri, R, Berardinelli, A, Boffi, P, Cassandrini, D, Laverda, A, Moggio, M, Morandi, L, Moroni, I, Pane, M, Pezzani, R, Pichiecchio, A, Pini, A, Minetti, C, Mongini, T, Mottarelli, E, Ricci, E, Ruggieri, A, Saredi, S, Scuderi, C, Tessa, A, Toscano, A, Tortorella, G, Trevisan, Cp, Uggetti, C, Vasco, G, Santorelli, Fm, and Bertini, E.

Published
2008

50. Genotype-phenotype correlations in congenital muscular dystrophies with defective glycosylation of dystroglycan: a multicentric study

Author

Messina, Sonia, Bruno, C, Mora, M, Pegoraro, E, Comi, Gp, D'Amico, A, Aiello, C, Biancheri, R, Berardinelli, A, Boffi, P, Cassandrini, D, Laverda, A, Moggio, M, Morandi, L, Moroni, I, Pane, M, Pezzani, R, Pichiecchio, A, Pini, A, Minetti, C, Mongini, T, Mottarelli, E, Ricci, E, Ruggieri, A, Saredi, S, Scuderi, C, Tessa, A, Toscano, A, Trevisan, Cp, Uggetti, C, Vasco, G, Santorelli, Fm, and Bertini, E.

Published
2008

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