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https://www.readbyqxmd.com/read/28934139/phyllodulcin-a-natural-sweetener-regulates-obesity-related-metabolic-changes-and-fat-browning-related-genes-of-subcutaneous-white-adipose-tissue-in-high-fat-diet-induced-obese-mice
#1
Eunju Kim, Soo-Min Lim, Min-Soo Kim, Sang-Ho Yoo, Yuri Kim
Phyllodulcin is a natural sweetener found in Hydrangea macrophylla var. thunbergii. This study investigated whether phyllodulcin could improve metabolic abnormalities in high-fat diet (HFD)-induced obese mice. Animals were fed a 60% HFD for 6 weeks to induce obesity, followed by 7 weeks of supplementation with phyllodulcin (20 or 40 mg/kg body weight (b.w.)/day). Stevioside (40 mg/kg b.w./day) was used as a positive control. Phyllodulcin supplementation reduced subcutaneous fat mass, levels of plasma lipids, triglycerides, total cholesterol, and low-density lipoprotein cholesterol and improved the levels of leptin, adiponectin, and fasting blood glucose...
September 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28934090/adipogenic-effects-and-gene-expression-profiling-of-firemaster%C3%A2-550-components-in-human-primary-preadipocytes
#2
Emily W Y Tung, Vian Peshdary, Remi Gagné, Andrea Rowan-Carroll, Carole L Yauk, Adéle Boudreau, Ella Atlas
BACKGROUND: Exposure to flame retardants has been associated with negative health outcomes including metabolic effects. As polybrominated diphenyl ether flame retardants were pulled from commerce, human exposure to new flame retardants such as Firemaster® 550 (FM550) has increased. Although previous studies in murine systems have shown that FM550 and its main components increase adipogenesis, the effects of FM550 in human models have not been elucidated. OBJECTIVES: The objectives of this study were to determine if FM550 and its components are active in human preadipocytes, and to further investigate their mode of action...
September 14, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28931545/regulation-of-genes-related-to-cholesterol-metabolism-in-rainbow-trout-oncorhynchus-mykiss-fed-plant-based-diet
#3
Tengfei Zhu, Genevieve Corraze, Elisabeth Plagnes-Juan, Edwige Quillet, Mathilde Dupont-Nivet, Sandrine Skiba-Cassy
Compared to fishmeal and fish oil, plant ingredients differ not only in the protein content, amino acid and fatty acid profiles but are also devoid of cholesterol, the major component of cell membrane and precursor of several bioactive compounds. Based on these nutritional characteristics, plant-based diets can affect fish physiology and cholesterol metabolism. In order to investigate the mechanisms underlying cholesterol homeostasis, rainbow trout were fed from 1g body weight during six months with a totally plant-based diet (V), a marine diet (M) and a marine restricted diet (MR) with feed intake adjusted to that of the V group...
September 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28928276/precursor-microrna-122-inhibits-synthesis-of-insig1-isoform-mrna-by-modulating-polyadenylation-site-usage
#4
Kara L Norman, Tzu-Chun Chen, Gusti Zeiner, Peter Sarnow
The insulin-induced gene 1 protein (Insig1) inhibits the cholesterol biosynthesis pathway by retaining transcription factor SREBP in the endoplasmic reticulum, and by causing the degradation of HMGCR, the rate-limiting enzyme in cholesterol biosynthesis. Liver-specific microRNA miR-122, on the other hand, enhances cholesterol biosynthesis by an unknown mechanism. We have found that Insig1 mRNAs are generated by alternative cleavage and polyadenylation, resulting in specific isoform mRNA species. During high cholesterol abundance, the short 1...
September 19, 2017: RNA
https://www.readbyqxmd.com/read/28920951/srebp-controlled-glucose-metabolism-is-essential-for-nk-cell-functional-responses
#5
Nadine Assmann, Katie L O'Brien, Raymond P Donnelly, Lydia Dyck, Vanessa Zaiatz-Bittencourt, Róisín M Loftus, Paul Heinrich, Peter J Oefner, Lydia Lynch, Clair M Gardiner, Katja Dettmer, David K Finlay
Activated natural killer (NK) cells engage in a robust metabolic response that is required for normal effector function. Using genetic, pharmacological and metabolic analyses, we demonstrated an essential role for Srebp transcription factors in cytokine-induced metabolic reprogramming of NK cells that was independent of their conventional role in the control of lipid synthesis. Srebp was required for elevated glycolysis and oxidative phosphorylation and promoted a distinct metabolic pathway configuration in which glucose was metabolized to cytosolic citrate via the citrate-malate shuttle...
September 18, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28918543/dietary-docosahexaenoic-acid-decreased-lipid-accumulation-via-inducing-adipocytes-apoptosis-of-grass-carp-ctenopharygodon-idella
#6
Ai Jin, Cai-Xia Lei, Jing-Jing Tian, Jian Sun, Hong Ji
The purpose of this study was to explore the mechanism of by which docosahexaenoic acid (DHA) inhibit the accumulation of adipose tissue lipid in grass carp (Ctenopharyngodon idella). We therefore designed two semi-purified diets, namely DHA-free (control) and DHA-supplemented, and fed them to grass carp (22.19 ± 1.76 g) for 3 and 6 weeks. DHA supplementation led to a significantly lower intraperitoneal fat index (IPFI) than that in the control group by reducing the number of adipocytes but significantly higher adipocyte size (P < 0...
September 17, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28902410/monascus-fermented-red-mold-dioscorea-protects-mice-against-alcohol-induced-liver-injury-while-its-metabolites-ankaflavin-and-monascin-regulates-ethanol-induced-ppar-%C3%AE-and-srebp-1-expression-in-hepg2-cells
#7
Chih-Fu Cheng, Tzu-Ming Pan
BACKGROUND: Alcoholic hepatitis is a necroinflammatory process that is associated with fibrosis and leads to cirrhosis in 40% of cases. The hepatoprotective effects of red mold dioscorea (RMD) from Monascus purpureus NTU 568 were evaluated in vivo using a mouse model of chronic alcohol-induced liver disease (ALD). RESULTS: ALD mice were orally administered vehicle (ALD group) or vehicle plus 307.5, 615.0, or 1537.5 mg kg(-1) (1×, 2×, and 5×) RMD for 5 weeks...
September 13, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28891024/resveratrol-supplementation-improves-lipid-and-glucose-metabolism-in-high-fat-diet-fed-blunt-snout-bream
#8
Dingdong Zhang, Yanan Yan, Hongyan Tian, Guangzhen Jiang, Xiangfei Li, Wenbin Liu
Here, we aimed to investigate whether resveratrol (RSV) can ameliorate high-fat diet (HFD)-induced metabolic disorder in fish. Blunt snout bream (Megalobrama amblycephala) with average weight 27.99 ± 0.56 g were fed a normal fat diet (NFD, 5% fat, w/w), a HFD (11% fat), or a HFD supplemented with 0.04, 0.36, or 1.08% RSV for 10 weeks. As expected, fish fed a HFD developed hepatic steatosis, as shown by elevated hepatic and plasma triglycerides, raised whole body fat, intraperitoneal fat ratio and hepatosomatic index, and increased plasma alanine aminotransferase (ALT) and aspartate aminotransferase (AST)...
September 10, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28883496/overexpression-of-insig-2-inhibits-atypical-antipsychotic-induced-adipogenic-differentiation-and-lipid-biosynthesis-in-adipose-derived-stem-cells
#9
Chien-Chih Chen, Li-Wen Hsu, Kuang-Tzu Huang, Shigeru Goto, Chao-Long Chen, Toshiaki Nakano
Atypical antipsychotics (AAPs) are considered to possess superior efficacy for treating both the positive and negative symptoms of schizophrenia; however, AAP use often causes excessive weight gain and metabolic abnormalities. Recently, several reports have demonstrated that AAPs activate sterol regulatory element-binding protein (SREBP). SREBP, SREBP cleavage-activating protein (SCAP) and insulin-induced gene (Insig) regulate downstream cholesterol and fatty acid biosynthesis. In this study, we explored the effects of clozapine, olanzapine and risperidone on SREBP signaling and downstream lipid biosynthesis genes in the early events of adipogenic differentiation in adipose-derived stem cells (ASCs)...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28882805/suppressor-of-cytokine-signaling-3-socs3-is-related-to-pro-inflammatory-cytokine-production-and-triglyceride-deposition-in-turbot-scophthalmus-maximus
#10
Peng Tan, Mo Peng, Dongwu Liu, Huarong Guo, Kangsen Mai, Rui Nian, Benoit Macq, Qinghui Ai
Turbot (Scophthalmus maximus) is an economically important fish that is farmed by aquaculture for human consumption. Aquacultured turbot are commonly fed a high-lipid diet; however, this diet causes excessive lipid deposition and the overexpression of pro-inflammatory cytokines. Studies in mammals have indicated that a relationship exists between pro-inflammatory cytokine overexpression and altered lipid metabolism through the activation of suppressor of cytokine signaling 3 (SOCS3). In this study, we investigated the relationship between SOCS3 and triglyceride (TG) deposition and mechanism of SOCS3 activation in farmed turbot fed high-lipid diet (HLD)...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28869898/3-o-glucosylation-of-quercetin-enhances-inhibitory-effects-on-the-adipocyte-differentiation-and-lipogenesis
#11
Chang Won Lee, Jeong Yeon Seo, Jisun Lee, Ji Won Choi, Sarang Cho, Jae Youn Bae, Jae Kyung Sohng, Sung Oog Kim, Jihoon Kim, Yong Il Park
Glycosylation of natural flavonoids with various sugar moieties can affect their physicochemical and pharmacological properties. In this study, the plant flavonoids quercetin aglycon (Quer) and quercetin 3-O-glucoside (Q3G) were evaluated and compared for their potential anti-obesity effects. The Q3G dose-dependently reduced the TG contents and lipid accumulation in 3T3-L1 adipocyte cells, by 52% and 60% at 20μM, respectively, compared to differentiated control (100%), which were 1.6-fold and 2.4-fold higher reduction than Quer...
September 1, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28869259/anti-hyperlipidemic-effect-of-rice-bran-polysaccharide-and-its-potential-mechanism-in-high-fat-diet-mice
#12
Ying Nie, Feijun Luo, Long Wang, Tao Yang, Limin Shi, Xinhua Li, Junjun Shen, Wei Xu, Ting Guo, Qinlu Lin
Hyperlipidemia occurs very often in modern society along with a high calorie intake and is regarded as one of the greatest risk factors for the prevalence of cardiac vascular disease (CVD). In this study, we investigated the anti-hyperlipidemic effect of the rice bran polysaccharides (RBP) and its mechanism in a high fat diet animal model. 60 ICR mice were randomly divided into 3 groups, which included Control, HFD (high fat diet) and HFD + RBP, and each group included 20 mice. The control group was fed with a standard diet while the other two groups were fed with HFD...
September 4, 2017: Food & Function
https://www.readbyqxmd.com/read/28867797/flavonoid-rich-extract-of-paulownia-fortunei-flowers-attenuates-diet-induced-hyperlipidemia-hepatic-steatosis-and-insulin-resistance-in-obesity-mice-by-ampk-pathway
#13
Chanmin Liu, Jieqiong Ma, Jianmei Sun, Chao Cheng, Zhaojun Feng, Hong Jiang, Wei Yang
The flavonoid-rich extract from Paulownia fortunei flowers (EPF) has been reported to prevent obesity and other lipid metabolism disease. However, the mechanism of its protective effects is not yet clear. The objective of this study was to investigate molecular factors involved in the hypoglycemic and hypolipidemic effects of EPF in obese mice fed a high-fat diet (HFD). Male h ICR (Institute of Cancer Research) mice were fed a HFD containing or not containing the EPF (50 or 100 mg/kg) for eight weeks. EPF reduced body weight gain, lipid accumulation in livers and levels of lipid, glucose and insulin in plasma as well as reduced insulin resistance as compared with the HFD group...
August 30, 2017: Nutrients
https://www.readbyqxmd.com/read/28866046/formaldehyde-alters-triglyceride-synthesis-and-very-low-density-lipoprotein-secretion-in-a-time-dependent-manner
#14
Jianying Bai, Pan Wang, Yanfei Liu, Yan Zhang, Yaofu Li, Zhen He, Lifang Hou, Ruifeng Liang
Formaldehyde is a common indoor air pollutant that is toxic to the liver. This study aimed to investigate the effects of formaldehyde on triglyceride metabolism in human hepatocellular carcinoma cells (HepG2). Cell viability was detected using a MTT (3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide) assay. Following treatment with different concentrations of formaldehyde for 24 and 48h, the intra and extra-hepatocellular triglyceride (TG) content was determined using a chemical-enzymatic method; Western blotting was used to detect the levels of fatty acid synthesis and VLDL-related proteins...
August 30, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28864421/twinfilin-1-enhances-milk-bio-synthesis-and-proliferation-of-bovine-mammary-epithelial-cells-via-the-mtor-signaling-pathway
#15
Lu Li, Lijie Liu, Bo Qu, Xueying Li, Xuejun Gao, Minghui Zhang
Twinfilin1 (TWF1) is an actin monomer-binding protein, which biological function has not yet been fully uncovered. In our previous study, we found by mass spectrometry analysis that TWF1 might be one of the major proteins responsible for milk bio-synthesis and proliferation of bovine mammary epithelial cells (BMECs). The purpose of this study was to explore the possible mechanism by which TWF1 regulates signaling pathways that enhance milk bio-synthesis and proliferation of BMECs. We first explored the effects of TWF1 on milk bio-synthesis and cell proliferation, and analyzed the role of TWF1 on the protein levels of signaling molecules (mTOR, SREBP-1c and Cyclin D1) related to milk bio-synthesis and cell proliferation...
August 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28863379/cassia-auriculata-flower-extract-attenuates-hyperlipidemia-in-male-wistar-rats-by-regulating-the-hepatic-cholesterol-metabolism
#16
Rajendran Vijayakumar, Vasanthi Nachiappan
Hyperlipidemia in the male albino Wistar rats was induced by Triton WR - 1339. The treatment of the hyperlipidemic animals with the ethanol extract of Cassia auriculata flower (Et-CAF) exhibited a dose dependent reduction in serum triacylglycerol, total cholesterol, low density lipoprotein (LDL), very low density lipoprotein (VLDL) similar to the hyperlipidemic animals treated with standard drug atorvastatin. Hyperlipidemia altered the protein and mRNA expression levels of the key genes (SREBP-1c, ACC1, SREBP-2, HMGR, HMGS, CYP7A1, and ABCA1) in lipid metabolism and the treatment with Et-CAF (300mg/kg b...
August 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28855656/ppar%C3%AE-dependent-insig2a-overexpression-inhibits-srebp-1c-processing-during-fasting
#17
Jae-Ho Lee, Hye Suk Kang, Hyeon Young Park, Young-Ah Moon, Yu Na Kang, Byung-Chul Oh, Dae-Kyu Song, Jae-Hoon Bae, Seung-Soon Im
Peroxisome-proliferator-activated receptor alpha (PPARα) and sterol regulatory element-binding protein (SREBP) play a role in regulating cellular fatty acid and cholesterol homeostasis via fatty acid oxidation and lipogenesis. The control of SREBP processing is regulated by the insulin induced gene (INSIG)2a protein, which binds SREBP to prevent SREBP translocation to the Golgi apparatus during nutrient starvation in the liver. However, the regulation of SREBP-1c processing by INSIGs during fasting and the regulatory mechanisms of the mouse Insig2a gene expression have not been clearly addressed...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28853872/oryzanol-modifies-high-fat-dietary-hfd-induced-obesity-expression-profile-and-inflammation-response-of-hepatic-tissues-in-mice
#18
Long Wang, Qinlu Lin, Tao Yang, Ying Liang, Yi Luo, Ying Nie, Junjun Shen, Xiangjin Fu, Yiping Tang, Feijun Luo
Hyperlipidemia occurs very often in modern society along with high calorie intake and it is one of the greatest risk factors caused multiple diseases. In the study, we investigated the anti-hyperlipidemic effect of oryzanol and its molecular mechanism in high fat diet (HFD) mouse model. 60 ICR mice were randomly divided into 3 groups, which include control group, HFD group and HFD+Ory group, and each group has 20 mice. The HFD+Ory group was additionally fed with 100 mg/kg of oryzanol by intragastric administration...
August 30, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28851937/serelaxin-improves-cardiac-and-renal-function-in-doca-salt-hypertensive-rats
#19
Dong Wang, Yuhuan Luo, Komuraiah Myakala, David J Orlicky, Evgenia Dobrinskikh, Xiaoxin Wang, Moshe Levi
Serelaxin, a recombinant form of the naturally occurring peptide hormone relaxin-2, is a pleiotropic vasodilating hormone that has been studied in patients with acute heart failure. In this study, the effects of serelaxin on cardiac and renal function, fibrosis, inflammation and lipid accumulation were studied in DOCA-salt treated rats. Uninephrectomized rats were assigned to two groups: controls provided with normal drinking water and DOCA provided with DOCA pellets and sodium chloride drinking water. After 4 weeks, the DOCA-salt rats were randomly selected and implanted with osmotic minipumps delivering vehicle or serelaxin for another 4 weeks...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28851735/oleate-increases-srebp-1-signaling-activity-in-scd1-deficient-hepatocytes
#20
Mohamed A Lounis, Karl-F Bergeron, Maggie S Burhans, James M Ntambi, Catherine Mounier
Stearoyl-CoA desaturase-1 (SCD1) is a key player in lipid metabolism. SCD1 catalyzes the synthesis of monounsaturated fatty acids (MUFA). MUFA are then incorporated into triacylglycerols and phospholipids. Previous studies have shown that Scd1 deficiency in mice induces metabolic changes in the liver characterized by a decrease in de novo lipogenesis and an increase in β-oxidation. Interestingly, Scd1 deficient mice show a decrease in the expression and maturation of the principal lipogenic transcription factor SREBP-1...
August 29, 2017: American Journal of Physiology. Endocrinology and Metabolism
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