Extremely variable clinic and genetic features characterize Mitochondrial Encephalomyopathy Disorders (MED). Pathogenic mitochondrial DNA (mtDNA) defects can be divided into large-scale rearrangements and single point mutations. Clinical manifestations become evident when a threshold percentage of the total mtDNA is mutated. In some MED, the "mutant load" in an affected tissue is directly related to the severity of the phenotype. However, the clinical phenotype is not simply a direct consequence of the relative abundance of mutated mtDNA. Other factors, such as nuclear background, can contribute to the disease process, resulting in a wide range of phenotypes caused by the same mutation. Using Affymetrix oligonucleotide cDNA microarrays (HG-U133A), we studied the gene expression profile of muscle tissue biopsies obtained from 12 MED patients (4 common 4977-bp deleted mtDNA and 8 A3243G: 4 PEO and 4 MELAS phenotypes) compared with age-matched healthy individuals.
Skeletal muscle gene expression profiling in mitochondrial disorders.
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View SamplesSMARD1 is an infantile autosomal recessive motor neuron (MN) disease, caused by mutations in the Immunoglobulin mu binding protein 2 (IGHMBP2).
Transplanted ALDHhiSSClo neural stem cells generate motor neurons and delay disease progression of nmd mice, an animal model of SMARD1.
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View SamplesThis SuperSeries is composed of the SubSeries listed below.
Genetic correction of human induced pluripotent stem cells from patients with spinal muscular atrophy.
Specimen part
View SamplesSpinal Muscular Atrophy (SMA) is an autosomal recessive motor neuron disease and is the second most common genetic disorder leading to death in childhood. Motoneurons derived from induced pluripotent stem cells (iPS cells) obtained by reprogramming SMA patient and his healthy father fibroblasts, and genetically corrected SMA-iPSC obtained converting SMN2 into SMN1 with target gene correction (TGC), were used to study gene expression and splicing events linked to pathogenetic mechanisms.
Genetic correction of human induced pluripotent stem cells from patients with spinal muscular atrophy.
Specimen part
View SamplesSpinal Muscular Atrophy (SMA) is an autosomal recessive motor neuron disease and is the second most common genetic disorder leading to death in childhood. Stem cell transplantation could represent a therapeutic approach for motor neuron diseases such as SMA. We examined the theraputics effects of a spinal cord neural stem cell population and their ability to modify SMA phenotype.
Neural stem cell transplantation can ameliorate the phenotype of a mouse model of spinal muscular atrophy.
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View SamplesAluminum toxicity is one of the major limiting factors for many crops worldwide. The primary symptom of Al toxicity syndrome is the inhibition of root growth, leading to poor water and nutrient absorption. The causes of this inhibition are still elusive, with several biochemical pathways being affected and with a significant variation between species. Most of the work done so far to investigate the genes responsible for Al tolerance used hydroponic culture. Here we evaluated plant responses using soil as substrate, which is a condition closer to the field reality.
Transcriptional profile of maize roots under acid soil growth.
Specimen part
View SamplesBackground: Exercise has a positive effect on overall health. This study was performed to get an overview of the effects of mixed exercise training on skeletal muscl
Identification of human exercise-induced myokines using secretome analysis.
Sex, Age, Race
View SamplesNatural grape-juice fermentations involve the sequential development of different yeast species which strongly influence the chemical and sensorial traits of the final product. In the present study,we aimed to examine the transcriptomic response of Saccharomyces cerevisiae to the presence of Hanseniaspora guilliermondii wine fermentation.
Genomic expression program of Saccharomyces cerevisiae along a mixed-culture wine fermentation with Hanseniaspora guilliermondii.
Treatment, Time
View SamplesWe treated logarithmically growing cultures of E.coli with a sub-lethal dose of an antimicrobial arylamide compound (PMX 10070) and Polymyxin B sulfate to measure transcriptional responses in an effort to understand mechanism of action
Antibacterial mechanism of action of arylamide foldamers.
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View SamplesTranscriptome analysis of growth hormone dependant genes in glomerular podocytes
Growth hormone (GH)-dependent expression of a natural antisense transcript induces zinc finger E-box-binding homeobox 2 (ZEB2) in the glomerular podocyte: a novel action of gh with implications for the pathogenesis of diabetic nephropathy.
Specimen part, Treatment
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