نتایج جستجو برای: spastic paraplegia
تعداد نتایج: 11676 فیلتر نتایج به سال:
We report the clinical features of 12 families with autosomal dominant spastic paraplegia (ADSP) linked to the SPG4 locus on chromosome 2p, the major locus for this disorder that accounts for approximately 40% of the families. Among 93 gene carriers, 32 (34%) were unaware of symptoms but were clinically affected. Haplotype reconstruction showed that 90% of the asymptomatic gene carriers present...
The hereditary spastic paraplegias are an expanding and heterogeneous group of disorders characterized by spasticity in the lower limbs. Plasma biomarkers are needed to guide the genetic testing of spastic paraplegia. Spastic paraplegia type 5 (SPG5) is an autosomal recessive spastic paraplegia due to mutations in CYP7B1, which encodes a cytochrome P450 7α-hydroxylase implicated in cholesterol ...
A large kinship is reported with dominantly inherited spastic paraplegia starting in the first decade of life; its clinical evolution was indistinguishable from that of "pure" hereditary spastic paraplegia (HSP). However, all patients studied had electrophysiological evidence of a predominantly sensory polyneuropathy, which was confirmed on nerve biopsy in three. The histological findings indic...
BACKGROUND Recently, a hexanucleotide repeat expansion in the C9orf72 gene has been identified to cause frontotemporal dementia, amyotrophic lateral sclerosis families and many other neurodegenerative diseases. Owing to the overlapping phenotypes among HSP, frontotemporal dementia and amyotrophic lateral sclerosis we hypothesized that C9orf72 expansions might be a genetic risk factor or modifie...
Central motor conduction (CMC) studies were carried out in 25 patients with hereditary spastic paraplegia (HSP). Responses evoked in the lower limbs by transcranial magnetic stimulation of the motor cortex were bilaterally absent in 33% of the patients and, when recordable, were delayed in 75% of cases. Responses in the upper limbs were mostly normal except for those from the five members of on...
S.T. de Bot, MD B.P.C. van de Warrenburg, MD, PhD H.P.H. Kremer, MD, PhD M.A.A.P. Willemsen, MD, PhD Because the medical literature on hereditary spastic paraplegia (HSP) is dominated by descriptions of adult case series, there is less emphasis on the genetic evaluation in suspected pediatric cases of HSP. The differential diagnosis of progressive spastic paraplegia strongly depends on the age ...
We describe the structure, genomic organization, and some transcription features of a human brain-specific gene previously localized to the genomic region involved in temporal lobe epilepsy and spastic paraplegia on chromosome 10q24. The gene, which consists of six exons disseminated over 16 kb of genomic DNA, is highly homologous to the porcine tmp83.5 gene and encodes a putative transmembrane...
The neuronal cell adhesion molecule L1 (L1CAM) is a transmembrane glycoprotein belonging to the immunoglobulin superfamily and is essential in the development of the nervous system. It is mainly expressed on neurons and Schwann cells, and plays a key role in axon outgrowth and pathfinding through interactions with various extracellular ligands and intracellular second messenger systems. Mutatio...
Hereditary spastic paraplegia (HSP) is a cluster of genetically heterogeneous disorders that has spastic paraplegia as the central feature. Autosomal dominant HSP (AD-HSP) is also genetically heterogeneous and seven loci have been identified so far on chromosomes 14q (SPG3), 2p (SPG4), 15q (SPG6), 8q (SPG8), 12q (SPG10), 19q (SPG12), and 2q (SPG13). Among them, the SPG4 gene named spastin (GenB...
4136 The Journal of Clinical Investigation http://www.jci.org Volume 123 Number 10 October 2013 reveals REEP1-dependent ER shaping. J Clin Invest. 2013;123(10):4273–4282. 12. Friedman JR, Lackner LL, West M, DiBenedetto JR, Nunnari J, Voeltz GK. ER tubules mark sites of mitochondrial division. Science. 2011;334(6054):358–362. 13. Allen Institute for Brain Science. Allen Mouse Brain Atlas. AIBS ...
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