GEO DataSets

Analysis of skeletal muscle biopsies from insulin-treated type 2 diabetes (T2D) subjects before/after exercise training, pre-diabetics and healthy controls. Results provide insight into the molecular basis of T2D, the role of mitochondrial dysfunction, and the effects of prolonged exercise training.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 3 disease state, 34 individual, 3 protocol sets

Platform:

GPL570

Series:

GSE19420

42 Samples

Download data: CEL

(Submitter supplied) Skeletal muscle mitochondrial dysfunction is secondary to T2DM and can be improved by long-term regular exercise training Mitochondrial dysfunction has long been implicated to play a causative role in development of type 2 diabetes (T2DM). However, a growing number of recent studies provide data that mitochondrial dysfunction is a consequence of T2DM development. The aim of our study is to clarify in further detail the causal role of mitochondrial dysfunction in T2DM by a comprehensive ex vivo analysis of mitochondrial function combined with global gene expression analysis in muscle of pre-diabetic newly diagnosed untreated T2DM subjects and long-standing insulin treated T2DM subjects compared with age- and BMI-matched controls. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3880

Platform:

GPL570

42 Samples

Download data: CEL

(Submitter supplied) The aim of this study was therefore to investigate molecular mechanisms associated with insulin sensitivity in skeletal muscle by relating global skeletal muscle gene expression with a surrogate measure of insulin sensitivity, i.e. homeostatic model assessment of insulin resistance (HOMA-IR). To identify genes with skeletal muscle expression related to insulin sensitivity, we obtained muscle biopsies from 38 non-diabetic participants in study A. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL4133 GPL7144

47 Samples

Download data: CEL, TXT

(Submitter supplied) To identify genes correlated to insulin sensitivity in skeletal muscle, we studied 38 non-diabetic men from Malmö, Sweden. Briefly, the Malmö Exercise Intervention cohort consists of sedentary but otherwise healthy male subjects from southern Sweden. They all have European ancestry and 18 of them have a first-degree family member with T2D. The mean age and body mass index (BMI) were 37.71 ± 0.71 years and 28.47 ± 0.48 kg/m2, respectively, and the mean 1/the homeostatic model assessment-insulin resistance (HOMA-IR) was 0.69 ± 0.04

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL7144

38 Samples

Download data: CEL

(Submitter supplied) Myosine heavy chain I was overexpressed in mouse skeletal muscle. The transgenic mice, as well as the wild type mice, were endurance trained on treadmill for 5 days/week over 8 weeks at 80% peak aerobic capacity in comparison with untrained mice. The gene expression profiles of the skeletal muscles from wild-type trained (WTT) and untrained (WTUT), and transgenic trained (TGT) and untrained (TGUT) were measured using Affymetrix Mouse430A 2.0 GeneChips. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

20 Samples

Download data

(Submitter supplied) Type 2 diabetes mellitus (DM) is characterized by insulin resistance and pancreatic beta-cell dysfunction. In high-risk subjects, the earliest detectable abnormality is insulin resistance in skeletal muscle. Impaired insulin-mediated signaling, gene expression, and glycogen synthesis, and accumulation of intramyocellular triglycerides have all been linked with insulin resistance, but no specific defect responsible for insulin resistance and DM has been identified in humans. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL80

20 Samples

Download data: CEL

(Submitter supplied) Septic patients treated in the intensive care unit (ICU) often develop multiple organ failure including persistent skeletal muscle dysfunction which results in the patient’s protracted recovery process. We have demonstrated that muscle mitochondrial enzyme activities are impaired in septic ICU patients resulting in decreased cellular energy which will interfere with muscle function and metabolism. Here we use detailed phenotyping and genomics to elucidate mechanisms leading to these impairments. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3463

Platform:

GPL570

21 Samples

Download data: CEL

Analysis of muscle biopsies from septic patients treated in the intensive care unit. Septic patients often develop multiple organ failure including persistent skeletal muscle dysfunction. Results provide insight into the molecular defects driving loss of muscle function and metabolic homeostasis.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 2 disease state sets

Platform:

GPL570

Series:

GSE13205

21 Samples

Download data: CEL

(Submitter supplied) Five consecutive skeletal muscle biopsies were taken from a young healthy male research volunteer under controlled living conditions consisting of 3 meals and normal sleeping time. Samples were obtained with five hour-intervals, always at least 4 hours after the last meal at 8AM, 1PM, 6PM, 11PM and 4AM the next day. Biopsies were taken according to the Bergström method under local anesthesia from the m. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

5 Samples

Download data: CEL

(Submitter supplied) Skeletal muscle adapts to exercise training of various modes, intensities and durations with a programmed gene expression response. This study dissects the independent and combined effects of exercise mode, intensity and duration to identify which exercise has the most positive effects on skeletal muscle health. Full details on exercise groups can be found in: Kraus et al Med Sci Sports Exerc. 2001 Oct;33(10):1774-84 and Bateman et al Am J Cardiol. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

114 Samples

Download data: CEL, CHP

(Submitter supplied) Analysis of gene expression associated with exercise response. The hypothesis tested was that individuals with Type 2 Diabetes that failed to demonstrate exercise-induced metabolic improvements would also reflect this lack of response in their skeletal muscle transcriptional profile at baseline. Of 186 genes identified by microarray analysis, 70% were upregulated in Responders and downregulated in Non-responders. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

17 Samples

Download data: TXT

(Submitter supplied) Mitochondrial diseases are a heterogeneous group of monogenic disorders that result from impaired oxidative phosphorylation (OXPHOS). As neuromuscular tissues are highly energy-dependent, mitochondrial diseases often affect skeletal muscle. Although genetic and bioenergetic causes of OXPHOS impairment in human mitochondrial myopathies are well established, there is a limited understanding of metabolic drivers of muscle degeneration. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

32 Samples

Download data: TXT