Epilepsy and EEG Findings in Males with Fragile X Syndrome
Corresponding Author
S. A. Musumeci
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Address correspondence and reprint requests to Dr. S. A. Musumeci at Oasi Institute for Research on Mental Retardation and Brain Aging, Via C. Ruggero, 73, I-94018 Troina (EN), Italy.Search for more papers by this authorR. J. Hagerman
Department of Pediatrics, University of Colorado Health Sciences Center, Child Development Unit, The Children Hospital, Denver, Colorado, U.S.A.
Search for more papers by this authorR. Ferri
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Search for more papers by this authorP. Bosco
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Search for more papers by this authorB. Dalla Bernardina
Child Neuropsychiatry, University of Verona, Verona
Search for more papers by this authorC. A. Tassinari
Department of Neurology, University of Bologna, Bellaria Hospital, Bologna
Search for more papers by this authorG. B. De Sarro
Department of Experimental and Clinical Medicine, School of Medicine, University of Reggio Calabria, Reggio Calabria, Italy
Search for more papers by this authorM. Elia
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Search for more papers by this authorCorresponding Author
S. A. Musumeci
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Address correspondence and reprint requests to Dr. S. A. Musumeci at Oasi Institute for Research on Mental Retardation and Brain Aging, Via C. Ruggero, 73, I-94018 Troina (EN), Italy.Search for more papers by this authorR. J. Hagerman
Department of Pediatrics, University of Colorado Health Sciences Center, Child Development Unit, The Children Hospital, Denver, Colorado, U.S.A.
Search for more papers by this authorR. Ferri
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Search for more papers by this authorP. Bosco
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Search for more papers by this authorB. Dalla Bernardina
Child Neuropsychiatry, University of Verona, Verona
Search for more papers by this authorC. A. Tassinari
Department of Neurology, University of Bologna, Bellaria Hospital, Bologna
Search for more papers by this authorG. B. De Sarro
Department of Experimental and Clinical Medicine, School of Medicine, University of Reggio Calabria, Reggio Calabria, Italy
Search for more papers by this authorM. Elia
Oasi Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
Search for more papers by this authorAbstract
Summary: Purpose and Methods: One hundred and ninety-two fragile X male patients were investigated for seizures and EEG findings, 168 in a retrospective and 24 in another prospective study, to characterize the natural history of seizures, epilepsy, and EEG abnormalities in males with this syndrome.
Results: Seizures were documented in 35 (18.2%) of 192 patients; they never started before the age of 2 years or after the age of 9 years. Seizures were frequently of the complex partial type and less frequently of the partial motor and generalized type. Seizures involving frontal and temporal lobes were commonly seen and were usually well controlled by anticonvulsants. In the majority of young fragile X patients studied, an age-related paroxysmal EEG pattern was found, which showed neurophysiologic characteristics very similar to those of the centrotemporal spikes.
Conclusions: These findings confirm that fragile X syndrome can be considered a genetic model of epilepsy.
REFERENCES
- 1 Lubs HA, Marker X chromosome. Am J Hum Genet 1969; 21: 231–44.
- 2 Sutherland GR. Fragile site of human chromosome: demonstration of their dependence on the type of tissue culture medium. Science 1977; 197: 265–6.
- 3 Opitz JM, Sutherland GR. Conference report: International Workshop on the Fragile X and X-linked Mental Retardation. Am J Med Genet 1984; 17: 5–94.
- 4 Neri G, Opitz JM, Mikkelsen M, Jacobs PA, Davies K, Turner G. Conference report: Third International Workshop on the Fragile X and X-linked Mental Retardation. Am J Med Genet 1988; 30: 61–328.
- 5 Fu YH, Kuhl DPA, Pizzuti A, et al. Variation of the CGG Repeat at the fragile X site results in genetic instability: resolution of the Sherman paradox. Cell 1991; 67: 1047–58.
- 6 Fridell RA, Benson RE, Hua J, Bogard HP, Cullen BR. A nuclear role for the fragile X mental retardation protein. EMBO J 1996; 15: 5408–14.
- 7 Musumeci SA, Ferri R, Colognola RM, Neri G, Sanfilippo S, Bergonzi P. Prevalence of a novel epileptogenic EEG pattern in the Martin: Bell syndrome. Am J Med Genet 1988; 30: 207–12.
- 8 Harvey J, Judge C, Wiener S. Familial X-linked mental retardation with an X chromosome abnormality. J Med Genet 1977; 11: 46–50.
- 9 Bowen P, Biederman B, Swallow KA. The X-linked syndrome of macroorchidism and mental retardation: further observations. Am J Med Genet 1978; 2: 409–14.
- 10 Larbrisseau A, Pierre J, Messier B, Richer CL. Fragile X chromosome and X-linked mental retardation. Can Med Assoc J 1982; 127: 123–7.
- 11 Fryns JP. The fragile X syndrome: a study of 83 families. Clin Genet 1984; 26: 497–528.
- 12 Partington MW. The fragile X syndrome II: preliminary data on growth and development in males. Am J Med Genet 1984; 17: 175–99.
- 13 Brondum-Nielsen K. Diagnosis of the fragile X syndrome (Martin-Bell syndrome): clinical findings in 27 males with the fragile site at Xq28. J Ment Defic Res 1983; 27: 211–26.
- 14 Finelli P, Pueschel SM, Padre-Mendoza T, O'Brien MM. Neurological findings in patients with the fragile-X syndrome. J Neurol Neurosurg Psychiatry 1985; 48: 150–3.
- 15 Wisniewski KE, Segan SM, Miezejeski CM, Sersen EA, Rudelli RD. The fra(X) syndrome: neurological, electrophysiological, and neuropathological abnormalities. Am J Med Genet 1991; 38: 476–80.
- 16 Arinami T, Sato M, Nakajima S, Kondo I. Auditory brain-stem responses in the fragile X syndrome. Am J Hum Genet 1988; 43: 46–51.
- 17 Vieregge P, Froster-Iskenius U. Clinico-neurological investigations in the fra(X) form of mental retardation. J Neurol 1989; 236: 85–92.
- 18 Musumeci SA, Ferri R, Elia M, Colognola RM, Bergonzi P, Tassinari CA. Epilepsy and fragile X syndrome: a follow-up study. Am J Med Genet 1991; 38: 511–3.
- 19 Ribacoba-Montero R, Salas-Puig J, Fernandez-Toral J, Fernandez-Martinez JM, MoralRato M. Fragile X syndrome and epilepsy. Neurologia 1995; 10: 70–5.
- 20 Commission on Classification and Terminology of the International League Against Epilepsy. Proposal for revised clinical and electroencephalographic classification of epileptic seizures. Epilepsia 1981; 22: 489–501.
- 21 Commission on Classification and Terminology of the International League Against Epilepsy. Proposal for revised classification of epilepsies and epileptic syndromes. Epilepsia 1989; 50: 389–99.
- 22 Kaufman AS, Faufman NS. Kaufman assessment battery for children. Circle Pines , MN : Am Guidance Service, 1983.
- 23 Wechsler D. Wechsler intelligence scale for children—revised. New York : The Psychological Corporation, 1973.
- 24 Terman L, Merrill M. Stanford-Binet intelligence scale: manual for the third revision, Form L-M. Boston : Houghton Mifflin Company, 1973.
- 25 McGavran L, Maxwell F. Cytogenetic aspects of the fragile X syndrome. In: RJ Hagerman, PM McBogg, eds. The fragile X syndrome: diagnosis, biochemistry, and intervention. Dillon , CO : Spectra Publishing Company, 1983: 55–81.
- 26 Bosco P, Ferri R, Call F, et al. Analysis of the FMR-1 gene and correlation with phenotype in Sicilian families with the fragile X syndrome. Bull Mol Biol Med 1995; 20: 149–51.
- 27 Musumeci SA, Colognola RM, Ferri R, et al. Fragile X syndrome: a particular epileptogenic EEG pattern. Epilepsia 1988; 29: 41–7.
- 28 Musumeci SA, Elia M, Ferri R, Scuderi S, Del Gracco S. Evoked spikes and giant somatosensory evoked potentials in a patient with fragile-X syndrome. Ital J Neurol Sci 1994; 15: 365–8.
- 29 Kluger G, Böhm I, Laub MC, Waldenmaier C. Epilepsy and fragile X gene mutations. Pediatr Neurol 1996; 15: 358–60.
- 30 Ferri R, Musumeci SA, Elia M, Del Gracco S, Scuderi S, Bergonzi P. Bit-mapped somatosensory evoked potentials in the fragile X syndrome. Neurophysiol Clin 1995; 24: 413–26.
- 31 Bouma PAD, Bovenkerk AC, Westendorp RGJ, Brouwer OF. The course of benign partial epilepsy of childhood with centrotemporal spikes: a meta-analysis. Neurology 1997; 48: 430–7.
- 32 Aicardi J. Benign epilepsy of childhood with rolandic spikes. In: J Aicardi, eds. Epilepsy in children. New York : Raven Press, 1986: 119–25.
- 33 Heijbel J, Blom S, Rasmuson M. Benign epilepsy of childhood with centrotemporal EEG foci: a genetic study. Epilepsia 1975; 16: 285–93.
- 34 Roger J, Bureau M. Les epilepsies partielles idiopathiques de l'enfant. Rev Neurol 1987; 1435: 381–91.
- 35 Rees M, Diebold U, Parker K, Doose H, Gardiner RM, Whitehouse DP. Benign childhood epilepsy with centrotemporal spikes and the focal wave trait is not linked to the fragile X region. Neuropediatrics 1993; 24: 211–3.
- 36 Shevell MI, Rosemblatt B, Watters GV, O'Gorian AM, Montes JL. “Pseudo-BECRS”: intracranial focal lesions suggestive of a primary partial epilepsy syndrome. Pediatr Neurol 1996; 14: 31–5.
- 37 Ambrosetto G. Treatable partial epilepsy and unilateral opercular neuronal migration disorder. Epilepsia 1993; 34: 604–8.
- 38 Ottman R, Annegers JF, Risch N, Hauser WA, Susser M. Relations of genetic and environmental factors in the etiology of epilepsy. Ann Neurol 1996; 39: 442–9.
- 39 Gastaut H. A new type of epilepsy: benign partial epilepsy of childhood with occipital spike-wave. Clin Electroencephalogr 1982; 13: 13–22.
- 40 DeMarco P, Tassinari CA. Extreme somatosensory evoked potential (ESEP): an EEG sign forecasting the possible occurrence of seizures in children. Epilepsia 1981; 22: 569–75.
- 41 Plasmati R, Michelucci R, Forti A, et al. The neurophysiological features of the benign partial epilepsy with rolandic spikes. Epilepsy Res Suppl 1992; 6: 45–8.
- 42 Landau WM, Kleffner FR. Syndrome of acquired aphasia with convulsive disorder in children. Neurology 1957; 7: 523–30.
- 43 Beaumanoir A, Nahory A. Les epilepsies benignes partielles: 11 cas d'epilepsie partielle frontale a evolution favorable. Rev EEG Neurophysiol 1983; 13: 207–11.
- 44 Tassinari CA, Bureau M, Dravet C, Roger J, Daniele-Natale O. Electrical status epilepticus during sleep in children (ESES). In: MB Sterman, MN Shouse, P Passouant, eds. Sleep and epilepsy. London : Academic Press, 1982: 465–79.
- 45 Doose H, Neubauer B, Carlsson G. Children with benign focal sharp waves in the EEG: developmental disorders and epilepsy. Neuropediatrics 1996; 27: 227–41.
- 46 Doose H, Brigger-Heur B, Neubauer B. Children with focal sharp waves: clinical and genetic aspects. Epilepsia 1997; 38: 788–96.
- 47 Mazzocco MMM, Hagerman RJ, Cronister A, Silverman MA, Pennington BF. Specific frontal lobe deficits among women with the fragile X gene. J Am Acad Child Adolesc Psychiatry 1992; 31: 1141–8.
- 48 Desai HB, Donat JM, Shokeir MH, Munoz DG. Amyotrophic lateral sclerosis in a patient with fragile X syndrome. Neurology 1990; 40: 378–80.
- 49 Rudelli RD, Brown WT, Wisniewski K, et al. Adult fragile X syndrome: clinico-neuropathological findings. Acta Neuropathol (Bert) 1985; 67: 289–95.
- 50 Hinton VJ, Brown WT, Wisniewski K, Rudelli RD. Analysis of neocortex in three males with the fragile X syndrome. Am J Med Genet 1991; 41: 289–94.
- 51 Reiss AL, Lee J, Freund L. Neuroanatomy of fragile X syndrome: the temporal lobe. Neurology 1994; 44: 1317–24.
- 52 Comery TA, Harris JB, Willems PJ, et al. Abnormal dendritic spines in fragile X knockout mice: maturation and pruning deficits. Proc Natl Acad Sci USA 1997; 94: 5401–4.
- 53 Musumeci SA, Ferri R, Elia M, et al. Sleep neurophysiology in fragile X patients. Dev Brain Dysfunct 1995; 8: 218–22.
- 54 Hagerman RJ, Fulton MJ, Leaman A, Riddle J, Hagerman K, Sobesky Y. A survey of fluoxetine therapy in fragile X syndrome. Dev Brain Dysfunct 1994; 7: 155–64.