Homo sapiens
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ABSTRACT:
PROVIDER: PRJNA103477 | ENA |
REPOSITORIES: ENA
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Project description:Characterization of genes associated with adipose tissue is key to understanding the pathogenesis of obesity and developing treatments for this disorder. Differential gene expression in the adipose tissue has been described in adulthood but none studies have been developed on childhood. The purpose of this study was to compare gene expression in omental adipose tissue from obese prepubertal and normal weight children. We selected 5 obese (BMI adjusted for age and sex z score >2) and 6 normal weight children. RNA was extracted from omental adipose tissue biopsies and cRNA was hybridizated on the human genome U133 Plus 2.0 Arrays (Affymetrix®). Microarray experiments were performed for each sample, and selected group of gene expression values were confirmed with real-time RT-PCR in 10 obese and 10 normal weigth prepubertal children. 1276 genes were found to be differentially expressed at P<0.05. Of those differential genes, 201 were upregulated (Fc>2) and 42 were downregulated (Fc<-2). Genes involved in metabolic and signalling pathways were altered in childhood obesity. Experiment Overall Design: Adipose tissue and blood samples were obtained from 27 children, 14 obese (BMI adjusted for age and sex z score > 2) and 13 non obese undergoing appendix surgery. About 400 mg of adipose tissue was taken and immediately immersed in RNAlater solution and stored at -80°C for gene expression analysis. Informed consent was obtained from all patients after the nature of the study was explained, and the experimental design was approved, from an ethical and scientific standpoint, by the Hospitalâs Ethical Committee responsible for research.
2008-10-26 | E-GEOD-9624 | biostudies-arrayexpress
Project description:Characterization of genes associated with adipose tissue is key to understanding the pathogenesis of obesity and developing treatments for this disorder. Differential gene expression in the adipose tissue has been described in adulthood but none studies have been developed on childhood. The purpose of this study was to compare gene expression in omental adipose tissue from obese prepubertal and normal weight children. We selected 5 obese (BMI adjusted for age and sex z score >2) and 6 normal weight children. RNA was extracted from omental adipose tissue biopsies and cRNA was hybridizated on the human genome U133 Plus 2.0 Arrays (Affymetrix®). Microarray experiments were performed for each sample, and selected group of gene expression values were confirmed with real-time RT-PCR in 10 obese and 10 normal weigth prepubertal children. 1276 genes were found to be differentially expressed at P<0.05. Of those differential genes, 201 were upregulated (Fc>2) and 42 were downregulated (Fc<-2). Genes involved in metabolic and signalling pathways were altered in childhood obesity. Keywords: disease state analysis
2008-10-01 | GSE9624 | GEO
Project description:Gene Expression Profiling in Omental Adipose Tissue of Morbidly Obese Diabetic African Americans
| PRJNA291192 | ENA
Project description:Gene expression analysis of subcutaneous and omental adipose tissue from obese, insulin-resistant women
| PRJNA296027 | ENA
Project description:This SuperSeries is composed of the following subset Series: GSE29409: Subcutaneous and omental white adipose tissue biopsies analysed from five obese patients GSE29410: Subcutaneous and omental white adipose tissue biopsies analysed from three obese patients Refer to individual Series
2012-01-01 | E-GEOD-29411 | biostudies-arrayexpress
Project description:The association between central obesity and insulin resistance reflects the properties of visceral adipose tissue. Our aim was to gain further insight into this association by analysing the lipid composition of subcutaneous and omental adipose tissue in obese women with and without insulin resistance. Subcutaneous and omental adipose tissue and serum were obtained from 29 obese nondiabetic women, 13 of whom were hyperinsulinemic. Histology, and lipid and gene profiling were performed. In omental adipose tissue of obese, insulin-resistant women, adipocyte hypertrophy and macrophage infiltration were accompanied by an increase in GM3 ganglioside and its synthesis enzyme ST3GAL5; in addition, phosphatidylethanolamine (PE) lipids were increased and their degradation enzyme, PEMT, decreased. ST3GAL5 was expressed predominantly in adipose stromovascular cells and PEMT in adipocytes. Insulin resistance was also associated with an increase in PE lipids in serum. Total RNA was isolated and up to 400 ng of total RNA per sample was labelled and hybridized to Illumina HumanHT-12_V4 expression BeadChip platform. Paired subcutaneous and omental samples from 6 women were analysed.
2015-12-07 | E-GEOD-73108 | biostudies-arrayexpress
Project description:Individualized analysis through expression profiling of 20,000 probes in 28 tissue samples evaluated in subcutaneous and omental adipose tissue obtained during surgical intervention in non-obese and obese patients. Patients consisted of men and women of varying body size (lean to severely obese). Samples were collected at the time of operation in the fasting state. Samples consisted of subcutaneous and omental adipose tissue as well as a blood sample from lean and obese men and women removed in the fasting state at the time of surgery.
2010-06-20 | E-GEOD-15524 | biostudies-arrayexpress
Project description:Purpose: To profile the transcriptomes of omental adipose tissues from obese and lean humans. Methods: Omental adipose tissues from obese and lean patients were subjected to RNA-Seq. Results: Differential expression analysis identified 206 dysregulated genes (p-value < 0.05 by moderated t-test and fold change M-bM-^IM-% 2 in obesity) that are known to be involved in a multitude of functions, including response to stress, inflammatory response and leukocyte adhesion. Differential splicing analysis uncovered the possible role of TLR4 RNA splicing in obesity. Our findings suggest that, as a person experiences weight gain/obesity, the adipose splicing pattern of TLR4 transcripts changes in favor of activation of TLR4 signaling, which in turn may contribute to the progression of obesity-related inflammation and complications. Conclusion: This study provides a look into the transcriptome of disease-state adipose tissue in obesity, and demonstrates the potential importance of aberrant RNA splicing and expression in obesity-associated immune dysregulation. Study design is of cross-sectional nature. Seven samples (three obese and four lean) were analyzed.
2015-02-11 | E-GEOD-55008 | biostudies-arrayexpress
Project description:The association between central obesity and insulin resistance reflects the properties of visceral adipose tissue. Our aim was to gain further insight into this association by analysing the lipid composition of subcutaneous and omental adipose tissue in obese women with and without insulin resistance. Subcutaneous and omental adipose tissue and serum were obtained from 29 obese nondiabetic women, 13 of whom were hyperinsulinemic. Histology, and lipid and gene profiling were performed. In omental adipose tissue of obese, insulin-resistant women, adipocyte hypertrophy and macrophage infiltration were accompanied by an increase in GM3 ganglioside and its synthesis enzyme ST3GAL5; in addition, phosphatidylethanolamine (PE) lipids were increased and their degradation enzyme, PEMT, decreased. ST3GAL5 was expressed predominantly in adipose stromovascular cells and PEMT in adipocytes. Insulin resistance was also associated with an increase in PE lipids in serum.
2015-12-07 | GSE73108 | GEO
Project description:To find out the regulating pathways of AIP1 in Type 2 Diabetes, we performed a proteomic array of omental adipose tissue between obese T2D and obese patients.
2022-07-04 | PXD033235 | Pride