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Microarray analysis of rat hepatic gene expression identifies new genes associated with postprandial triglyceridemia

ABSTRACT: The acute response four hours after a fat load of extra virgin olive oil was investigated using DNA microarrays. Hepatic gene expression was analysed in Wistar Rats.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE17859 | GEO | 2010/08/28

SECONDARY ACCESSION(S): PRJNA120103

REPOSITORIES: GEO

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Microarray analysis of rat hepatic gene expression identifies new genes associated with postprandial triglyceridemia

Project description:The acute response four hours after a fat load of extra virgin olive oil was investigated using DNA microarrays. Hepatic gene expression was analysed in Wistar Rats. Male rats, weighing 250- 300 g (purchased from Charles River, Barcelona, Spain), were used for experiments. Rats, housed in sterile filter-top cages (3-4 per cage), were acclimatized in a room maintained at 20ºC with a 12-h light-dark cycle for 10 days, allowed ad libitum access to water and standard chow diet (Pascual S.A., Barcelona, Spain), and fasted for 18 h before experiments. Two study groups were established: a) The control group did not receive any fat meal. The other group was fed 5 ml of olive oil (Aceites Toledo, Spain) as a bolus and sacrificed 4 hours after the feeding, respectively. This amount represents the use of a dose of 16 mL olive oil/ kg.

2010-08-28 | E-GEOD-17859 | biostudies-arrayexpress

Transcription profiling of colon mucosa from HLAB27 transgenic rats fed extra-virgin olive oil rich in polyphenols

Project description:HLA-B27 transgenic rats, experimental model of chronic colitis, fed with a diet in which the lipid component was provided by corn oil (CO group), extra-virgin olive oil rich in phenols, 718.8 mg of total phenols/kg of olive oil (EVOO group) or the same extra-virgin olive oil, deprived of phenolic compounds but retaining other minor components such as a-tocopherol (ROO group).

2018-11-26 | E-MTAB-6218 | biostudies-arrayexpress

GE expression profile of PBMCs in healthy subjects and MS patients after extra virgin olive oil (EVOO) intake - PART 3 - MS Patients

Project description:Gene expression profiles of PBMCs in patients with MS following extra virgin olive oil intake. The aim of the present study was to investigate the whole-genome gene and miRNA profiles of after EVOO intake. Results provide the information of changes in PBMCs transcriptome following EVOO intake. RNA obtained from PBMCs of the same patients before and after extra virgin olive oil intake (paired samples). Comparisons: T0 vs. T1 (paired samples)

2016-07-19 | E-GEOD-84591 | biostudies-arrayexpress

Gene expression profile of PBMCs in healthy subjects and MS Patients after extra virgin olive oil (EVOO) intake - Part 1 (Controls)

Project description:Gene expression profiles of PBMCs in healthy subjects following extra virgin olive oil intake. The aim of the present study was to investigate the whole-genome gene and miRNA profiles of after EVOO intake. Results provide the information of changes in PBMPs transcriptome following EVOO intake. RNA obtained from PBMCs of the same subjects before and after extra virgin olive oil intake (paired samples). Comparisons: T0 vs. T1 (paired samples) - Controls

2016-07-19 | E-GEOD-75025 | biostudies-arrayexpress

miRNA expression profile of PBMCs in healthy subjects after extra virgin olive oil (EVOO) intake - Part 2 (Controls)

Project description:miRNA expression profiles of PBMCs in healthy subjects following extra virgin olive oil intake. The aim of the present study was to investigate the whole-genome gene and miRNA profiles of PBMCs after EVOO intake. Results provide the information of changes in PBMPs transcriptome following EVOO intake. RNA obtained from PBMCs of the same patients before and after extra virgin olive oil intake (paired samples). Comparisons: T0 vs. T1 (paired samples) - Controls

2016-07-19 | E-GEOD-75026 | biostudies-arrayexpress

Hepatic transcriptomics of squalene in male Apoe-deficient mice on Western diet

Project description:Background and Purpose: Squalene is the main hydrocarbon present in extra virgin olive oil and it has been reported to have anti-steatotic properties in different animal models. The aims of this study were to investigate its effects on liver transcriptomics in Male C57BL/6J Apoe-deficient mice. Experimental Approaches: Male C57BL/6J Apoe-deficient mice were fed a purified Western diet with or without squalene during 11 weeks and hepatic squalene content was assessed. Hepatic transcriptomic changes were studied and confirmed by RT-qPCR. Key Results: Squalene supplementation increased its hepatic content. The Cyp2b10 and Cyp2c55 gene expressions were significantly up-regulated by the squalene intake in all animal models, with independence of sex, sexual hormones, dietary fat content, genetic background and dose, and were strongly associated with antioxidant defense capacity and with lipid content and composition. Conclusions and Implications: hepatic squalene exerts its activity through overexpression of these cytochromes and their changes in virgin olive oil diets may be due to squalene.

2021-04-30 | GSE145343 | GEO

miRNA expression profile of PBMCs in healthy subjects after extra virgin olive oil (EVOO) intake - Part 2 (Controls)

2016-07-19 | GSE75026 | GEO

Gene expression profile of PBMCs in healthy subjects and MS Patients after extra virgin olive oil (EVOO) intake - Part 1 (Controls)

2016-07-19 | GSE75025 | GEO

GE expression profile of PBMCs in healthy subjects and MS patients after extra virgin olive oil (EVOO) intake - PART 3 - MS Patients

2016-07-19 | GSE84591 | GEO

Olive oil phenols and GE in the aging mouse brain

Project description:The aim of this study was to evaluate whether the dietary treatment with olive oil phenols modifies the profile of microRNA and gene expression in different areas of the aging mouse brain and to correlate these changes with the cognitive and motor changes observed in the same aging animals. C57Bl/6J mice were fed from middle age to senescence with extra-virgin olive oil (10% wt/wt dry diet) rich in polyphenols (H-EVOO group, total polyphenol dose/day, 6mg/kg) or with the same extra-virgin olive oil deprived of phenolic compounds (L-EVOO group). By whole gene expression analysis we identified 53 genes differentially expressed in the cortex of H-EVOO mice compared to L-EVOO mice and no genes differentially expressed in the cerebellum. Gene Set Expression analysis (GSEA) found 6 gene sets significantly modulated by the dietary treatments in cortex, like the agrin-related postsynaptic differentiation gene set, involved in cholinergic synaptic differentiation and maintenance, exerting effects on axonal and dendritic growth. miRNA profiling found only 6 miRNA differentially modulated after 12 months of feeding and 63 after six months. Among them we noted miRNAs previously associated to neurodegenerative disorders such as mir101, 8.5 time more expressed in the cortex of L-EVOO fed mice compared to the H-EVOO group and no expressed in young mice. We extended our analysis on cortex harvested from transgenic TgCRND8 mice, a model of Alzheimer's disease, observing an overall down-regulation of miRNAs compared to mice of the same age. On the contrary, the H-EVOO fed mice cortex showed expression profiles similar to those of young mice, results supporting our previous data demonstrating that extra virgin olive oil rich in polyphenols may improve some age-related dysfunctions.

2013-09-10 | E-MTAB-1530 | biostudies-arrayexpress

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