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Effects of Morus alba L. (Mulberry) Leaf Extract in Hypercholesterolemic Mice on Suppression of Cholesterol Synthesis

ABSTRACT: To investigate effects of intake of mulberry leaf extracts on hypercholesterolemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that mulberry leaf extracts up-regulated the gene expression involved in suppression of cholesterol synthesis and stimulation of innate-adaptive Immunity. Mice were fed a high-cholesterol diet without/with orally administration of mulberry leaf extracts for 4 weeks. Livers were taken for RNA extraction and hybridization on Agilent microarrays.

ORGANISM(S): Mus musculus

SUBMITTER: Yukihiro Kobayashi

PROVIDER: E-GEOD-65839 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Effects of Morus alba L. (Mulberry) Leaf Extract in Hypercholesterolemic Mice on Suppression of Cholesterol Synthesis

Project description:To investigate effects of intake of mulberry leaf extracts on hypercholesterolemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that mulberry leaf extracts up-regulated the gene expression involved in suppression of cholesterol synthesis and stimulation of innate-adaptive Immunity.

2016-01-01 | GSE65839 | GEO

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Impact of embryonically-derived Kupffer cells depletion on liver gene expression under hypercholesterolemic conditions

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Mexican Ganoderma lucidum extracts decrease lipogenesis modulating transcriptional metabolic networks and gut microbiota in C57BL/6 mice fed with a high-cholesterol diet from early Drosophila embryo

Project description:Background: Prevention of hyperlipidemia and associated diseases is a health priority. Complementary medicine based on scientific evidence has recently recognized the potential of natural products for modulating lipid metabolism, such as the medicinal mushroom Ganoderma lucidum (Gl), which possesses hypocholesterolemic, prebiotic and antidiabetic properties. Methods: Whole-transcriptomic changes in liver and kidney from a mouse model (C57BL/6), under a high-cholesterol diet and standardized Gl extracts (Gl-1, Gl-2) or simvastatin administration, were analyzed to determine Gl hypocholesterolemic activity. Further effects of Gl extracts on lipid metabolism were evaluated using an in vitro hepatic-like macrophage model. Additionally, correlations among hepatic gene expression, microbiota and serum lipid profiles in vivo established by Gl extracts were evaluated. Results: Based on the hepatic and renal mRNA profiles of mice treated with Gl extracts and high-cholesterol diet, we identified relevant metabolic pathways modulated by Gl involving the restriction of lipid biosynthesis and the enrichment of lipid degradation and secretion. We further showed that Gl extracts induce a significant decrease of macrophage lipid storage and cholesterol biosynthesis, which occurs concomitantly by the down-modulation of Fasn and Elovl6. We also determined that prebiotic effects of Gl extracts modulating gut microbiota are correlated with the gene expression portraits. Conclusions: Our high-throughput analysis allowed to identify key transcriptomic nodes established by Gl extracts and their interaction with microbiome composition related to lipid catabolic signaling. Our results indicated that our Gl extracts have a robust potential to be used as transcriptome modulators and prebiotic agents to prevent metabolic disorders associated to hypercholesterolemia.

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Offsprings of crosses between hypercholesterolemic and normocholesterolemic parents LUMC-HKG-ApoE-Atherosclerosis

Project description:Enhanced prenatal fatty streak formation in human fetuses has been associated with maternal hypercholesterolemia. However, the possible roles of maternal genetic background and in utero environment on development of atherosclerosis in adult life have not been unraveled. We generated genetically identical heterozygous apoE-deficient mice offspring with a different maternal background to study the intrauterine effect of maternal genotype and associated hypercholesterolemia on the developing vascular system. As read out for increased atherosclerosis development in adult life, a constrictive collar was placed around the carotid artery to induce lesion formation. A significant increase in endothelial cell activation and damage was detected in the carotid arteries of heterozygous apoE-deficient fetuses with apoE-deficient mothers compared with offspring from wild type mothers, but no fatty streak formation was observed. Postnatally, all carotid arteries revealed normal morphology. In adult offspring with maternal apoE-deficiency, the constrictive collar resulted in severe lesion (9/10) development compared with no to only minor lesions (2/10) in offspring of wild type mothers. Microarray analysis showed no effect of maternal apoE-deficiency on gene expression in adult offspring. We conclude that maternal apoE-deficiency not only affects fetal arteries, but also increases the susceptibility for development of collar-induced atherosclerosis in adult life. Keywords: Atheroslcersosis development

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AIBP-mediated Cholesterol Efflux Instructs Hematopoietic Stem and Progenitor Cell Fate

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