Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA102631 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Aging is associated with mitochondrial dysfunction and insulin resistance. We conducted a study to determine the role of long-term vigorous endurance exercise on age-related changes in insulin sensitivity and various indices of mitochondrial functions. Experiment Overall Design: Skeletal muscle transcript profiling was done using Vastus Lateralis muscle biopsy samples from 10 young sedentary (YS), 10 older sedentary (OS), 10 young trained (YT) and 10 older trained (OT) men and women. Note that YT2, YS1, and OT1 didn't pass the Quality Control Step of dChip (high array/single outliers). Sedentary subjects exercised less than 30 min/day, twice per week. Trained subjects performed ⥠1 hour cycling or running 6 days/week over the past 4 years.
2008-06-16 | E-GEOD-9103 | biostudies-arrayexpress
Project description:The skeletal muscle system plays an important role in the independence of older adults. In this study we examine differences in the skeletal muscle transcriptome between healthy young and older subjects and (pre‐)frail older adults. Additionally, we examine the effect of resistance‐type exercise training on the muscle transcriptome in healthy older subjects and (pre‐)frail older adults. Baseline transcriptome profiles were measured in muscle biopsies collected from 53 young, 73 healthy older subjects, and 61 frail older subjects. Follow‐up samples from these frail older subjects (31 samples) and healthy older subjects (41 samples) were collected after 6 months of progressive resistance‐type exercise training. Frail older subjects trained twice per week and the healthy older subjects trained three times per week. At baseline genes related to mitochondrial function and energy metabolism were differentially expressed between older and young subjects, as well as between healthy and frail older subjects. Three hundred seven genes were differentially expressed after training in both groups. Training affected expression levels of genes related to extracellular matrix, glucose metabolism, and vascularization. Expression of genes that were modulated by exercise training was indicative of muscle strength at baseline. Genes that strongly correlated with strength belonged to the protocadherin gamma gene cluster (r = −0.73). Our data suggest significant remaining plasticity of ageing skeletal muscle to adapt to resistance‐type exercise training. Some age‐related changes in skeletal muscle gene expression appear to be partially reversed by prolonged resistance‐type exercise training. The protocadherin gamma gene cluster may be related to muscle denervation and re‐innervation in ageing muscle.
2018-07-24 | GSE117525 | GEO
Project description:Transcription profiling by array of human vastus lateralis muscle from trained or sedentary young and old subjects
2015-10-22 | E-GEOD-9103 | ExpressionAtlas
Project description:Global microarray (HG U133 Plus 2.0) was used to investigate the effects of resistance exercise and resistance training on the skeletal muscle transcriptome profile of 28 young and old adults. Vastus lateralis muscle biopsies were obtained pre and 4hrs post resistance exercise in the beginning (untrained state) and at the end (trained state) of a 12 wk progressive resistance training program. A total of 28 subjects were included in this investigation. The young (n=16, 24±1y) participants included 8 males and 8 females. The old (n=12, 84±1y) participants included 6 males and 6 females. All subjects participated in 12 wks of progressive resistance training consisting of bilateral knee extensions with 3x10 reps at 70% of 1-RM, and 3d/wk for a total of 36 training sessions. Vastus lateralis biopsies were obtained in conjunction with the 1st and 36th (last) training session and included a basal biopsy and another biopsy 4hrs post the resistance exercise session (for a total of 4 biopsies per subject). The RNA integrity for all samples was very good with an average RIN number of 7.6. All 110 samples were analyzed on a separate microarray chip, and samples were not pooled between subjects. The study design allowed us to examine the acute effects of resistance exercise on the skeletal muscle transcriptome in the untrained and trained state. The design also provided information on the effects of resistance training on basal level gene expression and the effects of age on basal level gene expression
2012-02-21 | E-GEOD-28422 | biostudies-arrayexpress
Project description:Exercise training increases endurance by inducing global gene expression changes in skeletal muscles. The extent to which the genetic effects of exercise can be mimicked by synthetic drugs is unknown. We measured global skeletal muscle expression in sedentary and exercised mice treated with vehicle or PPARdelta ligand GW1516. PPARdelta is a transcriptional regulator of muscle oxidative metabolism and fatigue resistance. Experiment Overall Design: Sedentary and exercise trained C57Bl/6J mice were treated with vehicle or GW1516 for 4 weeks, followed by collection of quadriceps for gene expression analysis.
2008-10-21 | E-GEOD-11803 | biostudies-arrayexpress
Project description:The aim of this investigation was to evaluate the effect of training on the global transcriptional response of skeletal muscle to an acute bout of resistance exercise. Seven young healthy men and women underwent a 12-week supervised progressive unilateral arm resistance exercise (RE) training program. One week after the last session of training, subjects performed an acute bout of bilateral arm RE in which the trained and the untrained arm exercised at the same relative intensity. A muscle biopsy was obtained 4h post exercise from the biceps brachii of the trained and untrained arm. Trained and untrained muscle samples were analyzed for mRNA levels of over 20,000 annotated genes using Affymetrix U133 Plus 2.0 microarrays.
2011-12-15 | E-GEOD-28998 | biostudies-arrayexpress
Project description:Genome wise DNA methylation profiling of peripheral blood mononuclear cells (PBMCs) obtained from younger sedentary (Y-SED), older sedentary (O-SED) and older aerobically exercise trained (O-Ex) human subjects. The Illumina 450K methylation beadchip array was used to obtain DNA methylation profiles across approximately 450,000 CpG dinucleotide methylation loci in DNA isolated from PBMCs. Samples include 12 Y-SED subjects, 15 O-SED subjects and 11 O-Ex subjects.
2020-10-01 | GSE85311 | GEO
Project description:Global microarray (HG U133 Plus 2.0) was used to investigate the basal level skeletal muscle transcriptome profile of young and old adults. One vastus lateralis muscle biopsy was obtained in the basal state from 36 different subjects.
2012-02-21 | GSE25941 | GEO
Project description:Global microarray (HG U133 Plus 2.0) was used to investigate the basal level skeletal muscle transcriptome profile of young and old adults. One vastus lateralis muscle biopsy was obtained in the basal state from 36 different subjects. A total of 36 subjects were included in this investigation. The young (n=15, 25±1y) participants included 7 males and 8 females. The old (n=21, 78±1y) participants included 10 males and 11 females. All subjects were healthy and had never been involved in any formal exercise. Skeletal muscle biopsies were obtained from the vastus lateralis in the basal state. The RNA integrity of all 36 samples was very good with an average RIN number of 8.2. All samples were analyzed on a separate microarray chip, and samples were not pooled between subjects.
2012-02-21 | E-GEOD-25941 | biostudies-arrayexpress
Project description:Global microarray (HG U133 Plus 2.0) was used to investigate the effects of resistance exercise and resistance training on the skeletal muscle transcriptome profile of 28 young and old adults. Vastus lateralis muscle biopsies were obtained pre and 4hrs post resistance exercise in the beginning (untrained state) and at the end (trained state) of a 12 wk progressive resistance training program.
2012-02-21 | GSE28422 | GEO