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Minor forms of spinal muscular atrophy
Metelcová, Tereza ; Šolc, Roman (advisor) ; Daňková, Pavlína (referee)
Spinal muscular atrophy (SMA) is neuromuscular disorder. This disorder affects motor neurons in anterior horns of spinal cord and brainstem, and cause muscle weakness. Some forms of SMA may be cause by damage peripheral nerve. The most significant difference in the pathology of SMA emerging at the level of the spinal cord and peripheral nerves is deterioration of sensory ability. Decreased ability of sensation, due to damage to sensory nerves. Nowadays, it is known 29 forms of SMA, which differ genetically, age of onset of the disorder, severity of symptoms and life expectancy. Mutation of minor forms of SMA is very diverse. Mutated genes are located on 15 different chromosomes, including the X chromosome. Clinical symptoms of SMA is similar in most forms. Several forms has another symptom besides muscular weakness. Nowadays, it is not yet known genetic cause of all forms of SMA
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Spinal muscular atrophy
Bohatá, Jana ; Šolc, Roman (advisor) ; Brynychová, Iva (referee)
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder which affects α-motor neurons in anterior horns of spinal cord resulting in progressive muscle weakness. The estimated incidence is 1:10 000 and carrier frequency 1:40-1:60. SMA is classified into four grades depending on the age of onset and its severity. Life expectancy differs according to grade of SMA, patients suffering from the most serious grades live about two years, milder could live to adulthood. This disorder is caused by mutation of the SMN1 gene which is located on the fifth chromosome. In the majority of cases the type of mutation is homozygous deletion in SMN1 gene. Keywords: Spinal muscular atrophy; neuromuscular disorder; alpha motor neurons; autosomal recessive disorder; SMN1; SMN2
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Spinal muscular atrophy
Bohatá, Jana ; Šolc, Roman (advisor) ; Brynychová, Iva (referee)
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder which affects α-motor neurons in anterior horns of spinal cord resulting in progressive muscle weakness. The estimated incidence is 1:10 000 and carrier frequency 1:40-1:60. SMA is classified into four grades depending on the age of onset and its severity. Life expectancy differs according to grade of SMA, patients suffering from the most serious grades live about two years, milder could live to adulthood. This disorder is caused by mutation of the SMN1 gene which is located on the fifth chromosome. In the majority of cases the type of mutation is homozygous deletion in SMN1 gene. Keywords: Spinal muscular atrophy; neuromuscular disorder; alpha motor neurons; autosomal recessive disorder; SMN1; SMN2
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Minor forms of spinal muscular atrophy
Metelcová, Tereza ; Šolc, Roman (advisor) ; Daňková, Pavlína (referee)
Spinal muscular atrophy (SMA) is neuromuscular disorder. This disorder affects motor neurons in anterior horns of spinal cord and brainstem, and cause muscle weakness. Some forms of SMA may be cause by damage peripheral nerve. The most significant difference in the pathology of SMA emerging at the level of the spinal cord and peripheral nerves is deterioration of sensory ability. Decreased ability of sensation, due to damage to sensory nerves. Nowadays, it is known 29 forms of SMA, which differ genetically, age of onset of the disorder, severity of symptoms and life expectancy. Mutation of minor forms of SMA is very diverse. Mutated genes are located on 15 different chromosomes, including the X chromosome. Clinical symptoms of SMA is similar in most forms. Several forms has another symptom besides muscular weakness. Nowadays, it is not yet known genetic cause of all forms of SMA
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