Abstract
Primary lateral sclerosis (PLS) is a diagnosis of exclusion in patients with progressive spinobulbar spasticity and could be part of the clinical spectrum of ALS. Unlike ALS, which is familial in 5 to 10% of the cases, PLS has been described as a sporadic disorder in adults. The authors report two patients with PLS from unrelated SOD1-negative familial ALS families. These observations provide further evidence that PLS can be linked pathophysiologically to ALS.
MeSH terms
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Adult
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Aged
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Aged, 80 and over
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Amyotrophic Lateral Sclerosis / diagnosis
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Amyotrophic Lateral Sclerosis / genetics*
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Amyotrophic Lateral Sclerosis / physiopathology*
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Brain Stem / pathology
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Brain Stem / physiopathology
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Comorbidity
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DNA Mutational Analysis
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Disease Progression
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Family Health
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Female
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Genetic Predisposition to Disease / genetics*
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Genetic Testing
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Genotype
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Humans
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Male
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Middle Aged
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Motor Neuron Disease / diagnosis
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Motor Neuron Disease / genetics*
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Motor Neuron Disease / physiopathology*
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Motor Neurons / pathology
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Muscle, Skeletal / innervation
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Muscle, Skeletal / physiopathology
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Mutation / genetics
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Pedigree
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Spinal Cord / pathology
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Spinal Cord / physiopathology
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Superoxide Dismutase / genetics
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Superoxide Dismutase-1
Substances
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SOD1 protein, human
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Superoxide Dismutase
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Superoxide Dismutase-1