Transcriptome profile of subcutaneous adipocytes isolated from obese vs. lean postmenopausal women
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE44000 | GEO | 2013/02/02
SECONDARY ACCESSION(S): PRJNA188320
REPOSITORIES: GEO
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Project description:Adipocytes isolated from lean and obese postmenopausal women with no significant differences in metabolic syndrome parameters demonstrate changes in multiple inflammatory, metabolic and structural gene families. Purified adipocyte samples were isolated from subcutaneous adipose tissue surgical biopsies of 7 obese (BMI>30) and 7 lean (BMI<25) postmenoposal women and gene expression was quantified with Agilent-014850, 4X44K human whole genome platform arrays (GPL6480)
2013-02-02 | E-GEOD-44000 | biostudies-arrayexpress
Project description:Obtaining adipose tissue samples are paramount to the understanding of human obesity. We have examined the impact of needle-aspirated and surgical biopsy techniques on the study of subcutaneous adipose tissue (scAT) gene expression in both obese and lean subjects. Biopsy sampling methods have a significant impact on data interpretation and revealed that gene expression profiles derived from surgical tissue biopsies better capture the significant changes in molecular pathways associated with obesity. We hypothesize that this is because needle biopsies do not aspirate the fibrotic fraction of scAT; which subsequently results in an under-representation of the inflammatory and metabolic changes that coincide with obesity. This analysis revealed that the biopsy technique influences the gene expression underlying the biological themes commonly discussed in obesity (e.g. inflammation, extracellular matrix, metabolism, etc), and is therefore a caveat to consider when designing microarray experiments. These results have crucial implications for the clinical and physiopathological understanding of human obesity and therapeutic approaches. Keywords: subject and tissue biopsy technique comparison Tissue samples from lean and obese subjects were analyzed: total of 36 hybridizations. The goal was to compare the effect of biopsy sampling methods on global subcutaneous adipose tissue gene expression analyses. The following subject groups were used for the analysis: 9 lean subjects: needle biopsy 9 lean subjects: surgical biopsy 9 obese subjects: needle biopsy 9 obese subjects: surgical biopsy
2008-12-22 | E-GEOD-12050 | biostudies-arrayexpress
Project description:The aim of the project was to compare global gene expression in adipocytes from obese patients and lean controls. Subcutaneous adipose tissue was collected from severely obese patients undergoing bariatric surgery (average body-mass index (BMI) of 45.5 kg/m2 (n = 12, thereof 4 men) and healthy lean patients undergoing hernia repairs (average BMI of 24.2 kg/m2 (n = 12, thereof 7 men), between 27 and 56 years of age. Adipocytes were isolated by collagenase treatment of adipose tissue, followed by filtering and centrifugation. Floating adipocytes were lysed in Qiazol before RNA purification and microarray analysis.
2018-12-12 | E-MTAB-6728 | biostudies-arrayexpress
Project description:Adipose, once considered an inert storage depot, is now known to be an active endocrine tissue involved in total body homeostasis and metabolism, which exerts effects on multiple systems including food intake, immune function, and blood glucose regulation. Adipose tissue depots are known to have unique metabolic and gene expression profiles in vivo and when cultured in vitro. Differences in adipose tissue depot function could be important in determining chronic disease risk. Few comparisons of depot gene expression have been performed in the dog. Utilizing microarray technology, our objective was to identify differentially expressed genes and enriched functional pathways between subcutaneous and gonadal adipose of lean and obese dogs. Subcutaneous and gonadal adipose tissue samples were collected from 9 intact female beagles (4 yr-old; 4 lean controls; 5 obese ad libitum-fed) after 24 wk of ad libitum feeding.
2012-01-15 | E-GEOD-29280 | biostudies-arrayexpress
Project description:Microarray analysis comparing gene expression profiles of adipocytes from non-diabetic lean vs non-diabetic obese Pima Indian subjects to identify differentially expressed adipocyte genes with obesity. RNA samples of isolated abdominal subcutaneous adipocytes from 20 lean (10 Males / 10 Females, aged 31±6 year, Body Mass Index 25±3 kg/m2 ) and 19 obese (9M/10F, 29±5y, 55±8 kg/m2 ) subjects were hybridized individually to Affymetrix oligonucleotide arrays HG-U95A, B, C, D, and E.
2007-08-25 | E-GEOD-2508 | biostudies-arrayexpress
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2020-02-18 | GSE145412 | GEO
Project description:Obtaining adipose tissue samples are paramount to the understanding of human obesity. We have examined the impact of needle-aspirated and surgical biopsy techniques on the study of subcutaneous adipose tissue (scAT) gene expression in both obese and lean subjects. Biopsy sampling methods have a significant impact on data interpretation and revealed that gene expression profiles derived from surgical tissue biopsies better capture the significant changes in molecular pathways associated with obesity. We hypothesize that this is because needle biopsies do not aspirate the fibrotic fraction of scAT; which subsequently results in an under-representation of the inflammatory and metabolic changes that coincide with obesity. This analysis revealed that the biopsy technique influences the gene expression underlying the biological themes commonly discussed in obesity (e.g. inflammation, extracellular matrix, metabolism, etc), and is therefore a caveat to consider when designing microarray experiments. These results have crucial implications for the clinical and physiopathological understanding of human obesity and therapeutic approaches. Keywords: subject and tissue biopsy technique comparison
2008-12-22 | GSE12050 | GEO
Project description:Polycystic ovary syndrome (PCOS) is typically characterized by oligo or anovulation, hyperandrogenism and polycystic ovarian morphology, affecting 5-20% of women of reproductive age [1]. It has drawn significant attention as a major cause of anovulatory infertility and the syndrome of metabolic, reproductive and obstetrical disorders [2 ,+]. Due to heterogeneous clinical features and unclear pathogenesis of PCOS, the diagnosis and treatment strategies remain a matter of debate. To better understand the complex follicular development environment in PCOS, we conducted a TMT-based quantitative proteomic study to compare the composition of proteins, pathways and molecular functions of FF from lean and overweight/obese women with PCOS and that of healthy controls.
2019-10-31 | PXD013937 | Pride
Project description:Adipose, once considered an inert storage depot, is now known to be an active endocrine tissue involved in total body homeostasis and metabolism, which exerts effects on multiple systems including food intake, immune function, and blood glucose regulation. Adipose tissue depots are known to have unique metabolic and gene expression profiles in vivo and when cultured in vitro. Differences in adipose tissue depot function could be important in determining chronic disease risk. Few comparisons of depot gene expression have been performed in the dog. Utilizing microarray technology, our objective was to identify differentially expressed genes and enriched functional pathways between subcutaneous and gonadal adipose of lean and obese dogs.
2012-01-15 | GSE29280 | GEO
Project description:Objective: The etiology of PCOS is mostly unknown. Existing data support both genetic and environmental factors in its pathogenesis. Design: Prospective case - control study. Setting: University Hospital. Patients: 25 patients undergoing IVF-ICSI treatment. Intervention: Genome-wide oligonucleotide microarray technology was used to study differential gene-expression patterns of cultured human cumulus cells from IVF patients divided into 4 groups according to disease state (PCOS vs. Control) and BMI (Obese vs. Lean). Results: Two differential PCOS gene expression profiles were established: Lean-Type was formed by comparing PCOS lean (PL) vs. non-PCOS lean (NL) individuals; Obese-Type was formed by comparing PCOS obese (PO) vs. non-PCOS (NO) obese patients. Conclusions: Different molecular pathways are associated with PCOS in Lean and Obese individuals, as demonstrated by gene expression profiling of cumulus cells. Our findings provide insights into the molecular pathogenesis of PCOS. We used microarrays to study the gene expression of human cultured cumulus cells. We compared the genes expression of lean PCOS, Obese PCOS, lean controls and obese controls. Different molecular pathways are associated with PCOS in Lean and Obese patients. Experiment Overall Design: Cumulus cells obtained from woman undergoing IVF/ICSI. Following oocyte retrieval, cumulus cells were stripped from the oocyte, in preparation for the ICSI process, with a micropipette. After 48h in culture the cumulus cells were collected for RNA extraction and hybridization on Affymetrix microarrays. We compered the expression profile of 4 groups - lean PCOS, obese PCOS, lean controls and obese controls.
2008-06-11 | E-GEOD-10946 | biostudies-arrayexpress