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High Fat Diet (HFD)-Induced Obesity Augments the Deleterious Effects of Estrogen Deficiency on Bone: Evidence from ovariectomized Mice.

ABSTRACT: High Fat Diet (HFD)-Induced Obesity Augments the Deleterious Effects of Estrogen Deficiency on Bone: Evidence from ovariectomized Mice.

PROVIDER: PRJNA799009 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17680357_1.fastq.gz	Fastqsanger.gz
	SRR17680357_2.fastq.gz	Fastqsanger.gz
	SRR17680358_1.fastq.gz	Fastqsanger.gz
	SRR17680358_2.fastq.gz	Fastqsanger.gz
	SRR17680359_1.fastq.gz	Fastqsanger.gz

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High Fat Diet (HFD)-Induced Obesity Augments the Deleterious Effects of Estrogen Deficiency on Bone: Evidence from ovariectomized Mice.

Project description:There is an increasing clinical evidence that obesity exerts deleterious effects on the skeleton. While obesity coexists with estrogen deficiency in postmenopausal women, their combined effects on the skeleton are poorly studied. Thus, we investigated the impact of high-fat diet (HFD) on bone and metabolism of ovariectomized (OVX) female mice (C57BL/6J). OVX or sham operated mice were fed either HFD (60%fat) or normal diet (ND) (10%fat) for 12 weeks. HFD-OVX group exhibited pronounced increase in body weight (~86% in HFD and ~122% in HFD-OVX, p<0.0005) and impaired glucose tolerance. Bone microCT-scanning revealed a pronounced decrease in trabecular bone volume/total volume (BV/TV) in HFD-OVX (15.6±0.48% in HFD and 37.5±0.235% in HFD-OVX, p<0.005) and expansion of bone marrow adipose tissue (BMAT) (+60.7±9.9% in HFD vs +79.5±5.86% in HFD-OVX, p<0.005). Mechanistically, HFD-OVX treatment led to upregulation of genes markers of senescence, bone resorption, adipogenesis and inflammation and downregulation of gene markers of bone formation and bone development. Similarly, HFD- OVX treatment resulted in significant changes in bone tissue levels of Purine/Pyrimidine and Glutamate metabolisms, known to play a regulatory role in bone metabolism. Obesity and estrogen deficiency exert combined deleterious effects on bone resulting in accelerated cellular senescence, expansion of BMAT and impaired bone formation leading to decreased bone mass. Our results suggest that obesity may increase bone fragility in post-menopausal women.

2022-12-05 | GSE194075 | GEO

High-fat diet-induced obesity augments the deleterious effects of estrogen deficiency on bone: Evidence from ovariectomized mice.

Project description:Several epidemiological studies have suggested that obesity complicated with insulin resistance and type 2 diabetes exerts deleterious effects on the skeleton. While obesity coexists with estrogen deficiency in postmenopausal women, their combined effects on the skeleton are poorly studied. Thus, we investigated the impact of high-fat diet (HFD) on bone and metabolism of ovariectomized (OVX) female mice (C57BL/6J). OVX or sham operated mice were fed either HFD (60%fat) or normal diet (10%fat) for 12 weeks. HFD-OVX group exhibited pronounced increase in body weight (~86% in HFD and ~122% in HFD-OVX, p < 0.0005) and impaired glucose tolerance. Bone microCT-scanning revealed a pronounced decrease in trabecular bone volume/total volume (BV/TV) (-15.6 ± 0.48% in HFD and -37.5 ± 0.235% in HFD-OVX, p < 0.005) and expansion of bone marrow adipose tissue (BMAT; +60.7 ± 9.9% in HFD vs. +79.5 ± 5.86% in HFD-OVX, p < 0.005). Mechanistically, HFD-OVX treatment led to upregulation of genes markers of senescence, bone resorption, adipogenesis, inflammation, downregulation of gene markers of bone formation and bone development. Similarly, HFD-OVX treatment resulted in significant changes in bone tissue levels of purine/pyrimidine and Glutamate metabolisms, known to play a regulatory role in bone metabolism. Obesity and estrogen deficiency exert combined deleterious effects on bone resulting in accelerated cellular senescence, expansion of BMAT and impaired bone formation leading to decreased bone mass. Our results suggest that obesity may increase bone fragility in postmenopausal women.

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Estrogen and high-fat diet induced alterations of endometrial transcriptome profile in ovariectomized C57BL/6 mice

Project description:Unopposed estrogen stimulation and insulin resistance are known to play important roles in endometrial cancer (EC), but the relationship between these two factors and how they contribute to endometrial lesions is not completely understood. To investigate the endometrial transcriptome profiles and the associated molecular pathway alterations, we established an ovariectomized C57BL/6 mouse model treated with subcutaneous implantation of the 17-β estradiol (E2) pellet and/or high-fat diet (HFD) to mimic sustained estrogen stimulation and insulin resistance. We used microarrays to detail the global program of gene expression underlying the mice endometrium and indentified distinct classes of E2 and/or high-fat diet related ncRNA during this process.

2018-01-12 | GSE102103 | GEO

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Project description:To examine the effect of E2 treatment for the miRNA expression, at 15 week old, female wiled type mice were ovariectomized, and after one week, estradiol (E2) was delivered at a concentration of 0.050 mg/kg body weight/day. 24 hours after chemical treatment, uteruses from mice treated with or without E2 were dissected.

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Genome-wide expression profile of livers from mice fed HFD,SO-HFD or Viv chow [RNAseq]

Project description:Purpose: Aim of the study is to identify changes in hepatic gene expression induced by either a 40kcal% coconut oil rich high fat diet (HFD), a 40kcal% soybean oil plus coconut oil high fat diet (SO-HFD) or a low fat vivarium chow diet (Viv). Methods: Livers from mice that had been fed one of the above mentioned diets for 35 weeks, were used to make cDNA libraries that were then sent for deep sequencing, using the Illumina TruSeq RNA. Result: Many genes involved in metabolism, lipid binding, transport and storage and many Cyp genes are dysregulated in the two high fat diets as compared to Viv HFDs in SO-HFD mice. Comparing the two HFDs shows more metabolism and disease related genes dysregulated in SO-HFD vs HFD. Conclusion: A diet high in soybean oil may be more detrimental to metabolic health than a diet high in saturated fats. cDNA isolated from livers from mice fed HFD, SO-HFD or Viv for 35 weeks, were 50bp pair-ended sequenced in triplicate using Illumina TruSeq RNA Sample Prep v2 Kit.

2015-08-28 | E-GEOD-68360 | biostudies-arrayexpress

Global survey of miRNA microarray of uterus, ovariectomized female mice with or without estrogen (E2) treatment

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24 hour time course: regulation of uterine genes by estradiol in ovariectomized mice

Project description:Using microarray technology, we compared the global expression pattern of uterine RNA from ovariectomized control mice to those of ovariectomized mice treated with estradiol for various intervals between 30 minutes and 24 hours. Keywords: estrogen, uterus, genomic, mouse

2006-04-14 | GSE4664 | GEO

Mammary epithelial cell subpopulations from control and ovariectomized mice

Project description:To study the effect of pregnancy on mouse mammary epithelial subpopulations, epthelial cells derived from control or ovariectomized adult mice were isolated using fluorescence-activated cell sorting. After elimination of haematopoietic and endothelial cells, two distinct epithelial subpopulations were sorted using antibodies against CD29 and CD24. Based on the immunohistochemical phenotype, and in vivo and in vitro functional assays, these subpopulations were identified as mammary stem cell enriched (CD29hiCD24+) and luminal (CD29loCD24+) respectively (ref: Shackleton et al, Nature 2006). Microarray profiling was used to compare gene expression profiles of the two subpopulations isolated from ovariectomized and control mice.

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