GEO DataSets

(Submitter supplied) Rationale: Physical inactivity is a risk factor for insulin resistance. We examined the effect of nine days of bed rest on basal and insulin stimulated expression of genes potentially involved in insulin action by applying hypothesis-generating microarray in parallel with candidate gene real-time PCR approaches in 20 healthy, young men. Furthermore, we investigated whether bed rest affected DNA methylation in the promoter region of the peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PPARGC1A) gene. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6480

60 Samples

Download data: TXT

(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:

GPL7144 GPL4133

47 Samples

Download data: CEL, TXT

(Submitter supplied) We studied 9 healthy young non-diabetic men without any family history of diabetes. The mean age and body mass index (BMI) were 25.33 ± 0.33 years and 24.57 ± 0.62 kg/m2, respectively, and the mean 1/ homeostatic model assessment of insulin resistance (HOMA-IR) was 1.17 ± 0.12. We included baseline gene expression profile data (i.e. only before bed rest)

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4133

9 Samples

Download data: TXT

(Submitter supplied) Recently, abnormalities in mitochondrial oxidative phosphorylation (OXPHOS) have been implicated in the pathogenesis of skeletal muscle insulin resistance in type 2 diabetes. In the present study, we hypothesized that decreased expression of OXPHOS genes could be of similar importance for insulin resistance in the polycystic ovary syndrome (PCOS). Using the HG-U133 Plus 2.0 expression array from Affymetrix, we analyzed gene expression in skeletal muscle from obese women with PCOS (n=16) and age- and body mass index-matched control women (n=13) metabolically characterized by euglycemic-hyperinsulinemic clamp and indirect calorimetry. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3104

Platform:

GPL570

29 Samples

Download data: CEL

Analysis of vastus lateralis muscles from women with insulin-resistant polycystic ovary syndrome (PCOS). Insulin resistance in skeletal muscles is a risk factor for the development of type 2 diabetes in women with PCOS. Results provide insight into the pathogenesis of insulin resistance in PCOS.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 disease state sets

Platform:

GPL570

Series:

GSE6798

29 Samples

Download data: CEL

(Submitter supplied) The present study concerns the effects of 21 days of sustained recumbence (bedrest) on skeletal muscle gene expression. 14 male subjects participated in normoxic bedrest (NBR) with muscle unloading, for 21 days, this is a substudy of tha PlanHab-study which apart from normoxic bedrest also involved hyboxic bedrest and hypoxic ambulation Throughout both bedrest interventions, each subject remained in a horizontal position at all times. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17692

24 Samples

Download data: CEL

(Submitter supplied) Genome-wide DNA methylation profiling of healthy young men following a control and high-fat overfeeding diet using Illumina's Infinium 27k Human DNA methylation Beadchip v. 1.2. DNA methylation profiles were obtained for 27,578 CpG sites in human skeletal muscle.

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

44 Samples

Download data: TXT

(Submitter supplied) Microarray-based studies of skeletal muscle from patients with type 2 diabetes and high-risk individuals have demonstrated that insulin resistance and reduced mitochondrial biogenesis co-exist early in the pathogenesis of type 2 diabetes independent of hyperglycaemia and obesity. It is unknown whether reduced mitochondrial biogenesis or other transcriptional alterations co-exist with impaired insulin-responsiveness in primary human muscle cells from patients with type 2 diabetes. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3681

Platform:

GPL8300

20 Samples

Download data: CEL

Analysis of myotube cell lines established from type 2 diabetes (T2D) subjects. Insulin resistance and reduced mitochondrial biogenesis coexist early in T2D pathogenesis independent of hyperglycemia and obesity. Results provide insight into the effect of T2D on developing skeletal muscle cells.

Organism:

Homo sapiens

Type:

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

Platform:

GPL8300

Series:

GSE12643

20 Samples

Download data: CEL

(Submitter supplied) Short-term bed rest is used to simulate muscle disuse in humans. In our previous reports, we found that 5d of bed rest induced a ~4% loss of skeletal muscle mass in OLD (60-79 y) but not YOUNG (18-28 y) subjects. Identifying muscle transcriptional events in response to bed rest and age-related differences will help identify therapeutic targets to offset muscle loss in vulnerable older adult populations. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

56 Samples

Download data: TXT

(Submitter supplied) The leg of healthy volunteers was locally deconditioned using three weeks of unilateral lower limb suspension (ULLS). The extremely deconditioned legs of subjects with a spinal cord injury (SCI) were trained using eight weeks of functional electrical stimulation (FES) exercise, 2-3 times per week (total 20 sessions). These models for local (in)activity were used to study changes in gene expression level of: A) Long-term deconditioning: before FES versus before ULLS (=SCI versus control); B) Short-term deconditioning: after ULLS versus before ULLS; and C) Exercise training: after FES versus before FES.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

14 Samples

Download data: CEL

(Submitter supplied) Genome wide DNA methylation from peripheral white blood cells (PWBCs) from individuals from different cohorts included in the MENA project. Samples included 474 individuals (DiOGenes-UNAV n=52, OBEPALIP n=29, Food4Me-UNAV n=39, GEDYMET n=57, ICTUS n=7, NUGENOB-UNAV n=22, PREDIMED-UNAV n=116, RESMENA n=44, OBEKIT n=96, and NormoP n=12). The Illumina Infinium 450k Human DNA methylation Beadchip or Infinium MethylationEPIC Beadchip (for OBEKIT) was used to obtain DNA methylation profiles across approximately 450,000 CpGs in these samples.

Organism:

Homo sapiens

Type:

Methylation profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL21145 GPL16304

474 Samples

Download data: IDAT, TXT

(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) The present study concerns the effects of 90 days of sustained recumbence (bedrest) on skeletal muscle gene expression with and without exercise countermeasures.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17586

41 Samples

Download data: CEL

(Submitter supplied) Exercise attenuates the development of chronic non-communicable diseases (NCDs). Gene signaling pathway analysis offers an opportunity to discover if electrically induced muscle exercise regulates key pathways among people living with spinal cord injury (SCI). We examined short-term and long-term durations of electrically induced skeletal muscle exercise on complex gene signaling pathways, specific gene regulation, and epigenetic tagging of PGC1a, a major transcription factor in skeletal muscle of men with SCI. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5175

30 Samples

Download data: CEL

(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