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Hepatic transcriptomic changes following equivalent weight loss by calorie restriction or vertical sleeve gastrectomy in mice with hepatic steatosis

ABSTRACT: Hepatic transcriptomic changes following equivalent weight loss by calorie restriction or vertical sleeve gastrectomy in mice with hepatic steatosis

PROVIDER: PRJNA937704 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23588943_1.fastq.gz	Fastqsanger.gz
	SRR23588943_2.fastq.gz	Fastqsanger.gz
	SRR23588944_1.fastq.gz	Fastqsanger.gz
	SRR23588944_2.fastq.gz	Fastqsanger.gz
	SRR23588945_1.fastq.gz	Fastqsanger.gz

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Hepatic transcriptomic changes following equivalent weight loss by calorie restriction or vertical sleeve gastrectomy in mice with hepatic steatosis

Project description:Sleeve gastrectomy (VSG) leads to improvement in hepatic steatosis, associated with weight loss. The aims of this study were to investigate whether VSG leads to weight-loss independent improvements in liver steatosis in mice with diet-induced obesity (DIO); and to transcriptomically profile hepatic changes in mice undergoing VSG. Methods: Mice with DIO were treated with VSG, sham surgery with subsequent food restriction to weight-match to the VSG group (Sham-WM), or sham surgery with return to unrestricted diet (Sham-Ad lib). Hepatic transcriptomics were investigated at the end of the study period and treatment groups were compared with mice undergoing sham surgery only (Sham-Ad lib). Results: VSG led to much greater improvement in liver steatosis than Sham-WM (liver triglyceride mg/mg 2.5 ± 0.1, 2.1 ± 0.2, 1.6 ± 0.1 for Sham-AL, Sham-WM and VSG respectively; p=0.003). Homeostatic model assessment of insulin resistance was improved following VSG only (51.2 ± 8.8, 36.3 ± 5.3, 22.3 ± 6.1 for Sham-AL, Sham-WM and VSG respectively; p=0.03). The glucagon-alanine index, a measure of glucagon resistance, fell with VSG but was significantly increased in Sham-WM (9.8 ± 1.7, 25.8 ± 4.6 and 5.2 ± 1.2 in Sham Ad-lib, Sham-WM and VSG respectively; p=0.0003). Genes downstream of glucagon receptor signalling which govern fatty acid synthesis (Acaca, Acacb, Me1, Acyl, Fasn and Elovl6) were downregulated following VSG but upregulated in Sham-WM. Conclusion: Changes in glucagon sensitivity may contribute to weight-loss independent improvements in hepatic steatosis following VSG.

2024-03-13 | GSE225843 | GEO

Transcriptomics analysis of enteroendocrine cells after vertical sleeve gastrectomy

Project description:We report here the transcriptome of sorted enteroendocrine cells from duodenum, ileum and colon from mice after vertical sleeve gastrectomy or sham operation, weight matched or not. We analyze the effect of region of origin and surgery and gene expression and found that only region of origin had an impact on EEC transcriptome

2018-10-19 | GSE121489 | GEO

Peptidomics profiling of the murine gut after vertical sleeve gastrectomy

Project description:Profiling of the murine peptidome along the gastrointestinal tract and pancreas in vertical sleeve gastrectomy and sham operated mice. The study compares the peptidome of various portions of the GI tract using intact mass spectrometry and database searching. These peptides included most gut hormones including proglucagon derived peptides, PYY, GIP, somatostatin, neurotensin amongst others.

2019-02-09 | PXD011455 | Pride

Downregulation of hepatic lncRNA Gm19619 improves gluconeogenesis and lipogenesis following vertical sleeve gastrectomy in mice [ChIRP-Seq]

Project description:Long non-coding RNAs (lncRNAs) are emerging important epigenetic regulators in metabolic processes. Whether they contribute to the metabolic effects of vertical sleeve gastrectomy (VSG), one of the most effective treatments for sustainable weight loss and metabolic improvement, is unknown. Herein, we identified a hepatic lncRNA Gm19619, which was strongly repressed by VSG but highly up-regulated by diet-induced obesity and overnight-fasting in mice. Forced transcription of Gm19619 in the mouse liver significantly promoted hepatic gluconeogenesis with the elevated expression of G6pc and Pck1. In contrast, AAV-CasRx mediated knockdown of Gm19619 in HFD-fed mice significantly improved hepatic glucose and lipid metabolism. Mechanistically, Gm19619 was enriched along genomic regions encoding leptin receptor (Lepr) and the transcriptional factor Foxo1, as revealed in chromatin isolation by RNA purification (ChIRP) assay and was confirmed to modulate their transcription in the mouse liver. In conclusion, Gm19619 may enhance gluconeogenesis and lipid metabolism in the liver.

2023-01-27 | GSE218905 | GEO

Downregulation of hepatic lncRNA Gm19619 improves gluconeogenesis and lipogenesis following vertical sleeve gastrectomy in mice [RNA-Seq]

2023-01-27 | GSE218904 | GEO

Gene expression profiling of the ileum following vertical sleeve gastrectomy compared to pair-fed sham surgery controls in mice with high-fat diet-induced obesity.

Project description:We report the expression profiles of ileal samples extracted from obese male C57Bl6 mice following vertical sleeve gastrectomy or sham surgery, focusing of gene signatures indicative of altered bile acid metabolism. We induced obesity in male C57bl6 mice through a high-fat diet. At 8 weeks, they were submitted to either a vertical sleeve gastrectomy (VSG) or a sham surgery; following surgery VSG mice were fed ad libitum while sham controls were pair-fed (SPF) to the experimental animals. During the four perioperative days, mice were fed a liquid Osmolite diet. Approximately 8 weeks after surgery mice were fasted overnight and gavaged with .5mL Osmolite; after one hour mice were sacrificed and the terminal ileum were extracted. RNA was extracted, quantified, and compared between VSG and SPF experimental groups.

2014-03-27 | E-GEOD-53782 | biostudies-arrayexpress

RNAseq Analysis of Mouse Stomach and Intestines Following Vertical Sleeve Gastrectomy

Project description:Bariatric surgery, an effective treatment for obesity and diabetes, leads to profound remodeling of whole body energy homeostasis. We utilized a mouse model of vertical sleeve gastrectomy (VSG), a common bariatric surgery as a tool to identify novel secreted proteins and peptides that might act as important metabolic regulators. We analyzed gene expression in the stomach and intestines following VSG or sham surgery in diet-induced obese mice and sought to identify differentially regulated genes encoding secreted proteins/peptides.

2017-10-14 | GSE104956 | GEO

Vertical sleeve gastrectomy reverses diet-induced gene-regulatory changes impacting lipid metabolism

Project description:Vertical sleeve gastrectomy (VSG) produces sustainable weight loss, remission of type 2 diabetes (T2D), and improvement of nonalcoholic fatty liver disease (NAFLD). However, the molecular mechanisms underlying the metabolic benefits of VSG have remained elusive. We have previously demonstrated that diet-induced obesity leads to chromatin modifications in the liver of mice. We demonstrate here that VSG in C57BL/6J wild-type male mice can reverse these chromatin modifications and thereby impact the expression of key metabolic genes. Genes involved in lipid metabolism, especially omega-6 fatty acid metabolism, are up-regulated in livers of mice after VSG while genes in inflammatory pathways are down-regulated after VSG. Consistent with gene expression changes, regulatory regions near genes involved in inflammatory response displayed decreased chromatin accessibility after VSG. Our results indicate that VSG induces global regulatory changes that impact hepatic inflammatory and lipid metabolic pathways, providing new insight into the mechanisms underlying the beneficial metabolic effects induced by VSG.

2017-07-13 | GSE94842 | GEO

Gene expression profiling of the ileum following vertical sleeve gastrectomy compared to pair-fed sham surgery controls in mice with high-fat diet-induced obesity.

2014-03-27 | GSE53782 | GEO

Transcriptomics analysis of enteroendocrine cells following vertical sleeve gastrectomy

Project description:Transcriptomics analysis of enteroendocrine cells following vertical sleeve gastrectomy

| PRJNA497456 | ENA