Hepatic transcriptome changes in testosterone-deficient pigs fed a high-fat diet
Ontology highlight
ABSTRACT:
ORGANISM(S): Sus scrofa
SUBMITTER: zhaowei cai
PROVIDER: E-GEOD-62696 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:Purpose: Obesity and dyslipidemia are associated with increased risk of renal disease.Testosterone deficiency aggravated high-fat diet-induced obesity and hypercholeterolemia. However,whether testosterone deficiency or testosterone deficiency-induced dyslipidemia aggravate the progression of renal disease is not clear. To gain insight into the role of testosterone in modulating renal lipid metabolism, we profiled renal gene expression by RNA-Seq in HFC-fed intact male pigs (IM), castrated male pigs (CM), and castrated male pigs with testosterone replacement (CMT). Methods: Sexually mature male miniature pigs were either surgical castrated or sham-operated, and castrated with testosterone replacement. We administrated to pigs a high-fat and high-cholesterol (HFC) diet for twelve weeks. RNA-Seq was employed to profile renal gene expression in pigs with different testosterone levels. Conclusions: This study demonstrated that testosterone deficiency aggravated renal lipid accumulation in pigs fed an HFC diet and that these effects could be reversed by testosterone replacement therapy. Impaired metabolic processes, bile acid secretion,estrogen signaling pathway and enhanced triglyceride synthesis may contribute to the increased renal lipid accumulation induced by testosterone deficiency and an HFC diet.
2023-01-17 | GSE125343 | GEO
Project description:Testosterone deficiency causes fat deposit, particularly in the visceral region, and its replacement might reverse fat accumulation, but the underlying mechanisms of such processes are largely unclear. To gain insights into the genome-wide role of testosterone on visceral adipose tissue (VAT), RNA-Seq was used to investigate testosterone deficiency induced changes of VAT in miniature pigs fed a high-fat and high-cholesterol (HFC) diet among intact male pigs (IM), castrated male pigs (CM), and castrated male pigs with testosterone replacement (CMT) treatments. The results showed that testosterone deficiency induced VAT deposit and increased serum leptin level. Moreover, a total of 1,732 differentially expressed genes (DEGs) were identified between different two groups. Compared with gene expression profiles in IM and CMT pigs, upregulated genes in CM pigs, i.e., LOC100520753 (CD68), LCN2, EMR1, NCF1 (p47phox), and NOX2 (GP91-PHOX), were mainly enriched in inflammatory response, oxidation-reduction process, and response to oxidative stress, while downregulated genes in CM pigs, i.e., DIO3, PCK1, and ABHD5, mainly focused on small molecule metabolic process. Taken together, our study provides a novel genome-wide view on the role of testosterone on VAT deposit under HFC diet, thus improving our understanding of the molecular mechanisms involved in VAT changes induced by testosterone deficiency.
2017-02-10 | GSE77544 | GEO
Project description:To gain insight into the role of testosterone in modulating hepatic fat accumulation, we collected liver tissues from high fat diet-fed intact male pigs, castrated male pigs, and castrated male pigs with testosterone replacement. RNA-Seq was employed to profile hepatic gene expression in pigs with different testosterone levels.
2015-01-08 | GSE62696 | GEO
Project description:Yorkshire pigs were divergently selected for residual feed intake (RFI) for 8 generations. Pigs with low RFI have reduced feed intake. Based on the resource allocation theory, we hypothesize that these low RFI pigs might have compromised immune response to immune stimulation. To test this hypothesis, twenty eight gilts of initial body weight (BW) of 63 4 kg from pigs selected for low RFI and high RFI were randomly selected for the ISU RFI selection project and utilized in two replicates (14 pigs/replicate) for this study. All pigs were housed in individual metabolism pens, had free access to water and were fed a corn-soy-based diet twice daily, and feed restricted (1.5 kg/day) as previously described. After a 9-day adaptation period pigs were randomly assigned within line to either a control (n = 6, three pigs per line) or lipopolysaccharide (LPS) challenge (n = 8, 4 pigs per line) group. Pigs in the challenge group were then repeatedly challenged with an intramuscular injection of 30, 36, 39, and 42 g/kg BW of LPS from E. coli O5:B5 (sigma-Aldrich, St. Louis, MO) dissolved in saline solution at time points 0, 48, 96, and 144 hours post initial injection (hpi) to compensate for LPS tolerance after initial injection, respectively, while animals in the control group were injected with an equivalent volume of saline solution at the equivalent time points. Rectal temperatures of individual pigs were measured immediately before the initial injection (serving as baseline, called 0 hpi for convenience), and 2, 4, 6, and 24 hpi, and 0, 4, 24 hours after each subsequent injection for all pigs. Blood samples were collected from the jugular vein into TempusTM Blood RNA tubes (Life Technologies, Grand Island, NY) for long-term storage at -80 C, EDTA tubes (BD, Franklin Lakes, NJ) for CBC tests and serum tubes for cytokine assays at 0, 2, 6, 24 and 168 hpi. At 168 hpi, all pigs were euthanized via barbiturate overdose, exsanguinated and tissue samples including the longissimus dorsi muscle, liver, spleen, and ileum were isolated, cleaned an frozen for later use. This study only focused on samples and data collected for the first 24 hours. Total RNA was extracted from the 32 blood samples of the treatment group in Replicate 2, collected at 0, 2, 6, and 24 hpi, by using preserved blood RNA purification kit I (Norgen Biotek Corp, Thorold, Ontario) per manufacturers instruction. On-column DNA digestion was performed as described using DNase I (Qiagen, Valencia, CA). Globin transcripts (HBB and HBA) were depleted by following an RNase H-mediated method. The quantity and integrity of the RNA were monitored by using Nanodrop 2000 (Thermo Scientific, Waltham, MA) and Bioanalyzer 2100 (Agilent Technologies, Santa Clara, CA) before and after globin depletion. The efficiency of globin depletion of each sample was checked by conventional RT-qPCR with -actin and GAPDH as the internal controls. Globin depletion efficiencies for all RNA samples were above 85%.
2017-03-24 | E-MTAB-5606 | biostudies-arrayexpress
Project description:In order to study the heart disorder that the long term, high energy diet caused, Bama miniature pigs were fed a high-fat, high-sucrose diet for 23 months. These pigs developed symptoms of metabolic syndrome and showed cardiac steatosis and hypertrophy with a greatly increased heart weight (1.82-fold, P<0.05) and heart volume (1.60-fold, P<0.05) compared with the control pigs. To understand the molecular mechanisms of cardiac steatosis and hypertrophy, nine pig heart cRNA samples were hybridized to porcine GeneChips. The control group consisted of 6 Bama pigs fed a control diet, and the HFHSD group comprised 6 pigs that were induced with a HFHS diet, which included 37% sucrose, 53% control diet and 10% pork lard. The pigs were fed twice every day and provided water ad libitum for 23 months. The pigs were fasted for 12 hours and euthanized with ketamine and xylazine. Pig hearts from the HFHSD group pigs (120, 126, 138, 140, 144, and 146) and three control group pigs (157, 159, and 161) were sampled and preserved in liquid nitrogen and then for RNA extraction and hybridization on Affymetrix microarrays.
2015-10-31 | E-GEOD-67890 | biostudies-arrayexpress
Project description:The aim of this experiment was to identify changes in gene expression in muscle and liver between pigs that were divergent in feed efficiency. The animals were selected from two different farms of origin. 48 animals were utilized in this study. Following slaughter RNA Total RNA was extracted from liver and muscle ((25 mg) tissue using Trizol Reagent (Sigma-Aldrich, Arklow, Ireland) according to the manufacturer’s instructions, the crude RNA extract was further purified using the GenElute Mammalian Total RNA Miniprep Kit (RTN70, Sigma-Aldrich). Library construction and sequencing was performed by the next generation sequencing facility at the Institute of Molecular Medicine, University of Leeds, United Kingdom. The RNA-seq libraries were constructed using the Illumina TruSeq RNA Sample Preparation Kit v2 (Illumina, San Diego, CA) per the manufacturer’s instructions. One hundred base paired-end sequencing was run on an Illumina HiSeq2000 platform with each pool ran on two lanes on a flow cell.
2019-04-24 | E-MTAB-7435 | biostudies-arrayexpress
Project description:Transcriptional profiling in peritoneal adipose tissue of 48 pigs (132 days of age) originated from two lines divergently selected for residual feed intake (RFI) : low-RFI pigs (RFIneg), high-RFI pigs (RFIpl). Both lines were offered isocaloric and isoproteic diets with contrasted energy source and nutrients: low fat, low fiber (LF) diet or a high fat, high fiber (HF)diet during 10 weeks. Effects of RFI selection, diet and interaction between diet and line were investigated. Four experimental groups: low-RFI pigs fed high fat, high fiber diet (HF_RFIneg), high-RFI pigs fed high fat, high fiber diet(HF_RFIpl), low-RFI pigs fed low fat, low fiber diet (LF_RFIneg) and high-RFI pigs fed low fat, low fiber diet(LF_RFIpl). 12 pigs per condition. One replicate per array.
2016-07-01 | E-GEOD-70837 | biostudies-arrayexpress
Project description:Transcriptional profiling in subcutaneous adipose tissue of 48 pigs aged (132 days of age) originated from two lines divergently selected for residual feed intake (RFI) : low-RFI pigs (RFIneg), high-RFI pigs (RFIpl). Both lines were offered isocaloric and isoproteic diets with contrasted energy source and nutrients: low fat, low fiber (LF) diet or a high fat, high fiber (HF)diet during 10 weeks. Effects of RFI selection, diet and interaction between diet and line were investigated. Four experimental groups: low-RFI pigs fed high fat, high fiber diet (HF_RFIneg), high-RFI pigs fed high fat, high fiber diet(HF_RFIpl), low-RFI pigs fed low fat, low fiber diet (LF_RFIneg) and high-RFI pigs fed low fat, low fiber diet(LF_RFIpl). 12 pigs per condition. One replicate per array.
2016-07-01 | E-GEOD-70836 | biostudies-arrayexpress
Project description:We used Affymetrix microarrays to investigate gene expression changes in PBMNCs isolated from female and male pigs to determine significant modulatory effects that may have been induced by the intake of resveratrol during 9 months in high-fat fed animals . The aim of this work was to determine whether the intake of dietary levels of resveratrol (RES) exerted any modulatory effects, at the level of gene expression, in PBMNCs isolated from female and male pigs exposed to a H-F diet for 9 months. We first isolated PBMNCs, and the corresponding total RNA, from 5 female pigs and 5 male pigs at time 0 (beginning of the experiment) to determine basal gene expression levels and to compare sex differential gene expression. Animals designated to the control group were then fed a normal chow (5% beef tallow) for 9 months. Animals in the H-F diet were fed a chow with 20% of beef tallow and animals in the H-F diet supplemented with resveratrol were fed the 20% fat diet plus resveratrol (8 mg/Kg body weight per day). From each group, PBMNCs were isolated from 2 female and 2 male animals. Pure RNA was extracted from the PBMNCs for microarrays analyses (Affymetrix) and gene differential expression determined between the H-F fed animals and CT animals (to determine the effects of fat consumption) and between the H-F fed animals supplemented with RES and the H-F group (to determine the effects of RES on the fat consumption).
2010-08-08 | E-GEOD-23503 | biostudies-arrayexpress
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2016-07-01 | E-GEOD-70838 | biostudies-arrayexpress