Francesca Madia

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OBJECTIVES SCN1A mutations were recently reported in several patients with severe myoclonic epilepsy in infancy (SMEI). The authors analyzed SCN1A mutations in 93 patients with SMEI and made genotype-phenotype correlation to clarify the role of this gene in the etiology of SMEI. METHODS All patients fulfilled the criteria for SMEI. The authors analyzed(More)
We describe four patients affected by chronic inflammatory demyelinating polyneuropathy (CIDP) in a pure motor form. Selective involvement of motor fibers was suggested by the absence of sensory symptoms, normal sensation at neurological examination and normal findings on electrophysiological testing of sensory fibres and sural nerve biopsy. The onset of(More)
PURPOSE EPM2B mutations have been found in a variable proportion of patients with Lafora disease (LD). Genotype-phenotype correlations suggested that EPM2B patients show a slower course of the disease, with delayed age at death, compared with EPM2A patients. We herein report clinical and genetic findings of 26 Italian LD patients. METHODS Disease(More)
OBJECTIVE To identify cryptic chromosomal deletions involving SCN1A in patients with severe myoclonic epilepsy of infancy (SMEI). METHODS Thirty-nine patients with SMEI and without SCN1A point mutations and their parents were typed with 14 intragenic SCN1A polymorphisms to identify hemizygosity. The parental origin and the extent of genomic deletions were(More)
PURPOSE The role of the familial background in severe myoclonic epilepsy of infancy (SMEI) has been traditionally emphasized in literature, with 25-70% of the patients having a family history of febrile seizures (FS) or epilepsy. We explored the genetic background of SMEI patients carrying SCN1A mutations to further shed light on the genetics of this(More)
Myoclonus has different clinical and neurophysiological features in patients with Unverricht-Lundborg (ULD) and Lafora body disease (LBD), probably because of a different cortical hyperexcitability profile. To investigate the role of intracortical inhibition in such different presentations, we used paired-pulse transcranial magnetic stimulation (TMS) in ten(More)
Sporadic amyotrophic lateral sclerosis (SALS) is a motor neuron degenerative disease of unknown etiology. Current thinking on SALS is that multiple genetic and environmental factors contribute to disease liability. Since neuronal acetylcholine receptors (nAChRs) are part of the glutamatergic pathway, we searched for sequence variants in CHRNA3, CHRNA4 and(More)
Familial amyloid polyneuropathy (FAP) is a rare condition caused by mutations of the transthyretin (TTR) gene and it is generally characterized by a length-dependent polyneuropathy affecting prevalently the small fibers. We reviewed clinical, electrophysiological and pathological findings of 15 unrelated patients with genetically confirmed TTR-FAP. All(More)
We identified a novel c.1556A>G transition in exon 12 of the HEXB gene associated with chronic Sandhoff's disease, changing a conserved aspartic acid to glycine at position 494 of the Hex beta-subunit; moreover, RT-PCR showed aberrant exon 12 skipping, causing a frame-shift and premature stop codon, consequent to the disruption of an exonic splicing(More)
BACKGROUND Severe myoclonic epilepsy of infancy (SMEI) or Dravet syndrome has been long suspected of having a genetic origin. Recently, mutations in SCN1A and GABRG2 have been described in SMEI patients. The sporadic nature of the SMEI syndrome and the occurrence of SCN1A and GABRG2 mutations in a mild familial phenotype, termed generalized epilepsy with(More)