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Hypothalamic transcriptome of Spraque Dawley rat at postnatal day 10 exposed to maternal high fat diet or control diet

ABSTRACT: Hypothalamic transcriptome of Spraque Dawley rat at postnatal day 10 exposed to maternal high fat diet or control diet

PROVIDER: PRJNA419761 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6322000.fastq.gz	Fastqsanger.gz
	SRR6322010.fastq.gz	Fastqsanger.gz
	SRR6321991.fastq.gz	Fastqsanger.gz
	SRR6322001.fastq.gz	Fastqsanger.gz
	SRR6322011.fastq.gz	Fastqsanger.gz

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Hypothalamic transcriptome of Spraque Dawley rat at postnatal day 10 exposed to maternal high fat diet or control diet

Project description:We have compared hypothalamic transcriptome of rat offspring exposed to maternal high fat diet or control diet

2017-12-01 | GSE107324 | GEO

Diet induced obesity is independent of metabolic endotoxemia, Tlr4 signalling and hypothalamic inflammation

Project description:A number of studies have proposed that excess food intake, particularly of high fat diets arise due dysregulation of homeostatic mechanisms regulating neuroendocrine control of appetite and energy balance. Current dogma suggests high fat diets invoke hypothalamic inflammation which reduces hypothalamic sensitivity to metabolic and hormonal cues of conveying peripheral status of energy balance, such as leptin and insulin. A hypothesis for the mechanism leading to hypothalamic inflammation is based on high fat diet mediated changes in gut microbiota which are then proposed to increase circulating levels of lipopolysaccharide (LPS). This in turn activates a hypothalamic inflammatory response via the toll-like receptor (TLR4) and CD14. The aim of this study was to determine hypothalamic gene expression in response to long term feeding of a high fat diet, taking into account the importance of using a control diet with a similar composition and balanced for sucrose content.

2018-10-23 | E-MTAB-6929 | biostudies-arrayexpress

Phosphoribotrap-based profiling of activated hypothalamic cells during acute high-fat diet (HFD)-feeding

Project description:To identify novel neurocircuits activated upon short-term HFD feeding, we employed phosphoribotrap-profiling, which allows for the unbiased identification of alterations in neuronal activation via immunoprecipitation of phosphorylated S6 ribosomal protein-tagged ribosomes from hypothalamic extracts of mice exposed to either 3 days of normal chow diet or HFD-feeding. We have analyzed mRNA selectively expressed in hypothalamic cells activated by a either normal chow diet (NCD)-feeding for 3 days or high fat diet (HFD)-feeding for 3 days. 10-week-old male C57/BL6N mice were put either on a normal chow diet or a high fat diet for 3 days. Afterwards, mice were sacrificed by cervical dislocation. The hypothalamus was rapidly dissected using a stainless steel brain matrix and immediately frozen in liquid nitrogen. Hypothalamic tissues were pooled (8 per IP).

2020-04-16 | GSE137737 | GEO

Peri-adolescent high-fructose diet effects on hypothalamic transcriptome

Project description:Fructose consumption has increased by over 25% since 1970, and excess consumption has deleterious metabolic effects. Additionally, fructose can alter hypothalamic pituitary adrenal axis function, potentially resulting in increased vulnerability to mood disorders. Adolescents are the greatest consumers of fructose and also at a critical period of development. Here, we examine the effects of consumption of a 55% fructose diet from weaning until adulthood on the hypothalamic transcriptome.

2015-03-25 | GSE56238 | GEO

Early Leptin Intervention Reverses Perturbed Energy Balance Regulating Hypothalamic Neuropeptides in the Pre- and Postnatal Calorie Restricted Offspring

Project description:Pre- and postnatal calorie restriction is associated with postnatal growth restriction, reduced circulating leptin concentrations and perturbed energy balance. Hypothalamic regulation of energy balance demonstrates enhanced orexigenic (NPY, AgRP) and diminished anorexigenic (POMC, CART) neuropeptide expression (PN21) setting the stage for subsequent development of obesity. Leptin replenishment during the early postnatal period (PN2-PN8) led to reversing the hypothalamic orexigenic:anorexigenic neuropeptide ratio at PN21 by only reducing the orexigenic (NPY, AgRP) without affecting the anorexigenic (POMC, CART) neuropeptide expression. This hypothalamic effect was mediated via enhanced leptin receptor (ObRb) signaling that involved increased pSTAT3 but reduced PTP1B. This was further confirmed by an increase in body weight at PN21 in response to intracerebroventricular administration of antisense ObRb oligonucleotides (PN2-PN8). The change in the hypothalamic neuropeptide balance in response to leptin administration caused increased oxygen consumption, carbon dioxide production and physical activity which resulted in increased milk intake (PN14) with no change in body weight. This is in contrast to the reduction in milk intake with no effect on energy expenditure and physical activity observed in controls. We conclude that pre- and postnatal calorie restriction perturbs hypothalamic neuropeptide regulation of energy balance setting the stage for hyperphagia and reduced energy expenditure, hallmarks of obesity. Leptin in turn reverses this phenotype by increasing hypothalamic ObRb signaling (sensitivity) and affecting only the orexigenic arm of the neuropeptide balance.

2014-12-31 | GSE55384 | GEO

Female and Male C57Bl/6J Offspring Exposed to Maternal Obesogenic Diet Develop Altered Hypothalamic Energy Metabolism in Adulthood

Project description:Purpose: Study a cohort of C57Bl/6J dams, treated with a control or high-fat-high-sugar diet, and their adult offspring to explore potential hypothalamic mechanisms to explain the link between maternal and offspring obesity. Hypothalamic differential gene expression analysis was conducted following next-generation sequencing (NGS) and analyzed in Ingenuity Pathway Analysis. This methodology was supplementary to in vivo studies which characterized offspring metabolic phenotype. Methods: Total RNA was extracted from a subset of offspring hypothalamus tissue using a RNeasy Mini Kit (Qiagen, Germantown, MD). Tissues were homogenized in RLT buffer using mechanized syringe homogenization. RNA was assessed for purity and concentration using the NanoDrop (NanoDrop Technologies). Approximately 4ug of total RNA was used to generate cDNA by reverse transcription using a cDNA synthesis kit (Applied Biosystems, Carlsbad, CA). Results: There were 31,637 differentially expressed genes in adult OB offspring hypothalamus compared with control diet. Of the identified differentially expressed genes, there were 2510 differentially expressed genes that were significantly different between CON and OB offspring (Supplemental Table 3). In OB offspring, 65% of the identified differentially expressed genes were downregulated whereas 35% were upregulated. Conclusions: Collectively, data demonstrate that maternal obesity without diabetes is associated with adiposity and decreased hypothalamic energy production.

2022-04-13 | GSE200611 | GEO

Impact of maternal high fat diet on hypothalamic transcriptome in neonatal Sprague Dawley rats.

Project description:Maternal consumption of a high fat diet during early development has been shown to impact the formation of hypothalamic neurocircuitry, thereby contributing to imbalances in appetite and energy homeostasis and increasing the risk of obesity in subsequent generations. Early in postnatal life, the neuronal projections responsible for energy homeostasis develop in response to appetite-related peptides such as leptin. To date, no study characterises the genome-wide transcriptional changes that occur in response to exposure to high fat diet during this critical window. We explored the effects of maternal high fat diet consumption on hypothalamic gene expression in Sprague Dawley rat offspring at postnatal day 10. RNA-sequencing enabled discovery of differentially expressed genes between offspring of dams fed a high fat diet and offspring of control diet fed dams. Female high fat diet offspring displayed altered expression of 86 genes (adjusted P-value<0.05), including genes coding for proteins of the extra cellular matrix, particularly Collagen 1a1 (Col1a1), Col1a2, Col3a1, and the imprinted Insulin-like growth factor 2 (Igf2) gene. Male high fat diet offspring showed significant changes in collagen genes (Col1a1 and Col3a1) and significant upregulation of two genes involved in regulation of dopamine availability in the brain, tyrosine hydroxylase (Th) and dopamine reuptake transporter Slc6a3 (also known as Dat1). Transcriptional changes were accompanied by increased body weight, body fat and body length in the high fat diet offspring, as well as altered blood glucose and plasma leptin. Transcriptional changes identified in the hypothalamus of offspring of high fat diet mothers could alter neuronal projection formation during early development leading to abnormalities in the neuronal circuitry controlling appetite in later life, hence priming offspring to the development of obesity.

| S-EPMC5730210 | biostudies-literature

Maternal Western-style diet alters the transcriptome of chemically induced mammary tumors in female offspring rats

Project description:Some previous experimental studies have shown that early in life intake of high-fat or Western-style diets did alter the development of mammary cancer in adulthood female rats. Thus, the present study investigated the distinct gene expression patterns of chemically induced mammary tumors derived from female offspring whose dams intake control diet (CD) or Western-style diet (WD). During gestational days (GD) 12-21 and post-natal days (PND) 1-21, pregnant Sprague-Dawley (SD) rats were fed a CD diet or WD (high-fat and low-fiber and oligoelements) diet. On postnatal day (PND) 21, the female offspring received a single dose of carcinogen N-Methyl-N-Nitrosourea (MNU, 50 mg/kg) and CD diet for 12 weeks. Latency, incidence and tumor burden were registered. Mammary tumors samples were collected and histopathology and gene expression analysis were performed.

2018-10-12 | GSE96520 | GEO

Irx3 and Irx5 regulate hypothalamic postnatal neurogenesis and leptin sensitivity

Project description:Irx3 and Irx5 regulate hypothalamic postnatal neurogenesis and leptin sensitivity

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Expression data from hypothalamic samples of WT mice fed normal diet vs high fat diet

Project description:The consumption of a 60% high fat diet leads to increased body weight and the development of the metabolic syndrome. We analyzed hypothalamic samples of WT mice as it has been previously shown that the hypothalamus plays a crucial role in the regulation of energy homeostasis. We used microarrays to detail the global programme of gene expression affected by the consumption of a high fat diet specifically in the hypothalamus of WT mice.

2019-05-01 | GSE127056 | GEO

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