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https://www.readbyqxmd.com/read/28624275/nuclear-receptor-subfamily-1-group-h-member-2-lxrb-is-the-predominant-liver-x-receptor-subtype-regulating-transcription-of-2-major-lipogenic-genes-in-goat-primary-mammary-epithelial-cells
#1
H B Shi, C H Zhang, Z A Xu, X F Xu, Z B Lv, J Luo, J J Loor
In ruminants, recent research has identified a crucial role for liver X receptors (LXR) in regulating lipid metabolism in mammary cells. However, the differences between LXR subtypes in regulating ruminant lipid metabolism are unknown. We used overexpression and knockdown of LXRA and LXRB in goat primary mammary epithelial cells to distinguish subtype-specific regulation of sterol regulatory element binding protein 1c (SREBP1c) and fatty acid synthase (FASN) mRNA expression and their promoter activity. Incubation with siRNA targeting LXR decreased expression of LXRA and LXRB...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28615298/combination-treatment-with-orlistat-containing-nanoparticles-and-taxanes-is-synergistic-and-enhances-microtubule-stability-in-taxane-resistant-prostate-cancer-cells
#2
Joshua J Souchek, Amanda L Davis, Tanner K Hill, Megan B Holmes, Bowen Qi, Pankaj K Singh, Steven J Kridel, Aaron M Mohs
Taxane-based therapy provides a survival benefit in patients with metastatic prostate cancer, yet the median survival is less than 20 months in this setting due in part to taxane-associated resistance. Innovative strategies are required to overcome chemoresistance for improved patient survival. Here, NanoOrl, a new experimental nanoparticle formulation of the FDA-approved drug, orlistat, was investigated for its cytotoxicity in taxane-resistant prostate cancer utilizing two established taxane-resistant (TxR) cell lines...
June 14, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28615065/genome-wide-association-study-and-genomic-prediction-for-fatty-acid-composition-in-chinese-simmental-beef-cattle-using-high-density-snp-array
#3
Bo Zhu, Hong Niu, Wengang Zhang, Zezhao Wang, Yonghu Liang, Long Guan, Peng Guo, Yan Chen, Lupei Zhang, Yong Guo, Heming Ni, Xue Gao, Huijiang Gao, Lingyang Xu, Junya Li
BACKGROUND: Fatty acid composition of muscle is an important trait contributing to meat quality. Recently, genome-wide association study (GWAS) has been extensively used to explore the molecular mechanism underlying important traits in cattle. In this study, we performed GWAS using high density SNP array to analyze the association between SNPs and fatty acids and evaluated the accuracy of genomic prediction for fatty acids in Chinese Simmental cattle. RESULTS: Using the BayesB method, we identified 35 and 7 regions in Chinese Simmental cattle that displayed significant associations with individual fatty acids and fatty acid groups, respectively...
June 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28604762/tip30-regulates-lipid-metabolism-in-hepatocellular-carcinoma-by-regulating-srebp1-through-the-akt-mtor-signaling-pathway
#4
F Yin, G Sharen, F Yuan, Y Peng, R Chen, X Zhou, H Wei, B Li, W Jing, J Zhao
Lipid reprogramming has been considered as a crucial characteristic in hepatocellular carcinoma (HCC) initiation and progression. However, detailed molecular mechanisms have yet to be clearly defined. Here, we examined the effects of tumor suppressor TIP30 on the regulation of HCC lipid metabolism. We found that decreased TIP30 expression leads to elevated fatty acid synthesis and enhanced levels of lipogenic enzymes SCD and FASN in HCC cells. Moreover, SREBP1 is one of the key transcription factors regulating liver lipid metabolism, and TIP30 deficiency significantly increased SREBP1 expression and nuclear accumulation...
June 12, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28599789/microrna-126-participates-in-lipid-metabolism-in-mammary-epithelial-cells
#5
Meiqiang Chu, Yong Zhao, Yanni Feng, Hongfu Zhang, Jing Liu, Ming Cheng, Lan Li, Wei Shen, Hongfang Cao, Qiang Li, Lingjiang Min
Lipids are a major component of milk and are important for infant growth and development. MicroRNA-126 (miR-126) has previously been observed in mammary glands and adipocytes and is known to be involved in lipid metabolism during the process of atherosclerosis. However, it remains unknown whether miR-126 also participates in lipid metabolism in mammary luminal epithelial cells (MECs). In the current investigation, miR-126-3p inhibition stimulated lipid synthesis in MECs in part through increasing levels of the lipid synthesis enzymes FASN, ACSL1, and Insig1...
June 6, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28596796/hesperidin-protects-against-acute-alcoholic-injury-through-improving-lipid-metabolism-and-cell-damage-in-zebrafish-larvae
#6
Zhenting Zhou, Weichao Zhong, Haiyan Lin, Peng Huang, Ning Ma, Yuqing Zhang, Chuying Zhou, Yuling Lai, Shaohui Huang, Shiying Huang, Lei Gao, Zhiping Lv
Alcoholic liver disease (ALD) is a series of abnormalities of liver function, including alcoholic steatosis, steatohepatitis, and cirrhosis. Hesperidin, the major constituent of flavanone in grapefruit, is proved to play a role in antioxidation, anti-inflammation, and reducing multiple organs damage in various animal experiments. However, the underlying mechanism of resistance to alcoholic liver injury is still unclear. Thus, we aimed to investigate the protective effects of hesperidin against ALD and its molecular mechanism in this study...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28588696/mapk-p53-mediated-fasn-expression-in-bone-tumors
#7
Ye Jiang, Xiaofan Yin, Liang Wu, Qiang Qin, Jun Xu
The correlation between mitogen-activated protein kinase (MAPK)/P53 signaling-dependent fatty acid synthase (FASN) expression and bone tumors was examined in the present study. We established the SH081 bone tumor cell line, which was used to determine the expression of FASN and MAPK/P53 at the mRNA and protein levels in bone tumor cells and normal cells. Compared with the normal cells, the expression of MAPK/P53 and FASN mRNA was significantly elevated, whereas inhibition of MAPK/P53 decreased FASN expression...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28585425/cide-gene-expression-in-adipose-tissue-liver-and-skeletal-muscle-from-obese-and-lean-pigs
#8
Yue-Qin Qiu, Xue-Fen Yang, Xian-Yong Ma, Yun-Xia Xiong, Zhi-Mei Tian, Qiu-Li Fan, Li Wang, Zong-Yong Jiang
The expression of the cell death-inducing DNA fragmentation factor α-like effector (CIDE) family including Cidea, Cideb, and Cidec was significantly increased in mouse and human models of obesity. However, there was less information on these genes' expression in pigs. Here, we hypothesized that different fat accumulation between lean (Duroc×Landrace×Yorkshire gilts, DLY) and obese (Lantang) pigs was attributed to porcine CIDE-modulating lipid metabolism. Our data showed that Cidea and Cidec were expressed at a high level in adipose tissue, and at a relatively high level in skeletal muscle, whereas Cideb was mainly expressed in the liver in both breeds of pig...
June 2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28576870/role-of-mir-383-and-mir-146b-in-different-propensities-to-obesity-in-male-mice
#9
Shu-Fang Xia, Xiao-Mei Duan, Xiang-Rong Cheng, Li-Mei Chen, Yan-Jun Kang, Peng Wang, Xue Tang, Yong-Hui Shi, Guowei Le
The study was designed to investigate the possible mechanisms of hepatic microRNAs (miRs) in regulating local thyroid hormone (TH) action and ultimately different propensities to high-fat diet (HFD) induced obesity. When obesity-prone (OP) and obesity-resistant (OR) mice were fed high-fat diet for 7 weeks, OP mice showed apparent hepatic steatosis, with significantly higher body weight and lower hepatic thyroid hormone receptor b (TRb) expression and type 1 deiodinase (DIO1) activity than OR mice. Next-generation sequencing technology revealed that 13 miRs in liver were dysregulated between the two phenotypes, of which 8 miRs were predicted to target on Dio1 or TRb...
June 2, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28571744/kr-pok-zbtb7c-regulates-cancer-cell-proliferation-through-glutamine-metabolism
#10
Man-Wook Hur, Jae-Hyeon Yoon, Min-Young Kim, Hyeonseok Ko, Bu-Nam Jeon
Kr-POK (ZBTB7c) is a kidney cancer-related POK transcription factor that not only represses transcription of CDKN1A but also increases expression of FASN. However, precisely how Kr-POK affects cell metabolism by controlling gene expression in response to an energy source in rapidly proliferating cells remains unknown. In this study, we characterized the molecular and functional features of Kr-POK in the context of tumor growth and glutamine metabolism. We found that cells expressing Kr-POK shRNA exhibited more severe cell death than control cells in glucose-deprived medium, and that knockdown of Kr-POK decreased glutamine uptake...
May 30, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28570659/caffeic-acid-and-hydroxytyrosol-have-anti-obesogenic-properties-in-zebrafish-and-rainbow-trout-models
#11
Esmail Lutfi, Patrick J Babin, Joaquim Gutiérrez, Encarnación Capilla, Isabel Navarro
Some natural products, known sources of bioactive compounds with a wide range of properties, may have therapeutic values in human health and diseases, as well as agronomic applications. The effect of three compounds of plant origin with well-known dietary antioxidant properties, astaxanthin (ATX), caffeic acid (CA) and hydroxytyrosol (HT), on zebrafish (Danio rerio) larval adiposity and rainbow trout (Onchorynchus mykiss) adipocytes was assessed. The zebrafish obesogenic test (ZOT) demonstrated the anti-obesogenic activity of CA and HT...
2017: PloS One
https://www.readbyqxmd.com/read/28565856/blocking-fatty-acid-synthase-inhibits-tumor-progression-of-human-osteosarcoma-by-regulating-the-human-epidermal-growth-factor-receptor-2-phosphoinositide-3-kinase-protein-kinase-b-signaling-pathway-in-xenograft-models
#12
Xuan Yin Chen, Hui Bing Ruan, Xin Hua Long, Ai Fen Peng, Long Dian Zhou, Jia Ming Liu, Yang Zhou, Zhi Li Liu
Previous studies have demonstrated that fatty acid synthase (FASN) is overexpressed in osteosarcoma (OS) cells and tissues and, therefore, knockdown of FASN may inhibit OS cell proliferation, migration and invasion via regulation of the human epidermal growth factor receptor 2 (HER2)/phosphoinositide 3-kinase (PI3K)/protein kinase B(Akt) signaling pathway in vitro. However, the tumor microenvironment has a crucial role in the determination of tumor malignant phenotype. The aim of the present study was to investigate the effect of knockdown of FASN on OS progression and the potential molecular mechanism in nude mice with orthotopic tumor implants in vivo...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28539716/prevention-mechanism-of-2-3-5-4-tetrahydroxy-stilbene-2-o-%C3%AE-d-glucoside-on-lipid-accumulation-in-steatosis-hepatic-l-02-cell
#13
Pei Lin, Jian-Mei Lu, Yan-Fang Wang, Wen Gu, Rong-Hua Zhao, Jie Yu
AIM: 2,3,5,4'-Tetrahydroxy-stilbene-2-O-β-d-glucoside (TSG), a natural stilbene, shows great activities in hepatic lipid regulation, especially for hepatic triglyceride lowering. However, information about its mechanisms on biosynthesis and degradation of triglyceride is still limited. This research pays close attention to clarify the mechanism of TSG on prevention of hepatic lipid accumulation. MATERIALS AND METHODS: TSG was given to steatosis hepatocyte L-02 cell induced by fat emulsion incubation...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28527383/tributyltin-and-triphenyltin-exposure-promotes-in-vitro-adipogenic-differentiation-but-alters-the-adipocyte-phenotype-in-rainbow-trout
#14
Esmail Lutfi, Natàlia Riera-Heredia, Marlon Córdoba, Cinta Porte, Joaquim Gutiérrez, Encarnación Capilla, Isabel Navarro
Numerous environmental pollutants have been identified as potential obesogenic compounds affecting endocrine signaling and lipid homeostasis. Among them, well-known organotins such as tributyltin (TBT) and triphenyltin (TPT), can be found in significant concentrations in aquatic environments. The aim of the present study was to investigate in vitro the effects of TBT and TPT on the development and lipid metabolism of rainbow trout (Onchorynchus mykiss) primary cultured adipocytes. Results showed that TBT and TPT induced lipid accumulation and slightly enhanced peroxisome proliferator-activated receptor gamma (PPARγ) and CCAAT enhancer binding protein alpha (C/EBPα) protein expression when compared to a control, both in the presence or absence of lipid mixture...
May 8, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28514198/piceatannol-reduces-fat-accumulation-in-caenorhabditis-elegans
#15
Peiyi Shen, Yiren Yue, Kee-Hong Kim, Yeonhwa Park
Excess fat accumulation and abnormal metabolism are involved in numerous diseases and thus the research on identification of compounds that can regulate energy homeostasis could significantly facilitate the current effort to prevent and/or treat metabolic disorders. Piceatannol, one of the natural stilbenes, was previously found to decrease lipid accumulation of 3T3-L1 adipocytes. However, its role in fat metabolism in vivo is not known. Thus, Caenorhabditis elegans as an animal model was used in the current study to determine the effect of piceatannol on fat accumulation and its underlying mechanisms...
May 17, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28510098/body-mass-index-and-risk-of-colorectal-carcinoma-subtypes-classified-by-tumor-differentiation-status
#16
Akiko Hanyuda, Yin Cao, Tsuyoshi Hamada, Jonathan A Nowak, Zhi Rong Qian, Yohei Masugi, Annacarolina da Silva, Li Liu, Keisuke Kosumi, Thing Rinda Soong, Iny Jhun, Kana Wu, Xuehong Zhang, Mingyang Song, Jeffrey A Meyerhardt, Andrew T Chan, Charles S Fuchs, Edward L Giovannucci, Shuji Ogino, Reiko Nishihara
Previous studies suggest that abnormal energy balance status may dysregulate intestinal epithelial homeostasis and promote colorectal carcinogenesis, yet little is known about how host energy balance and obesity influence enterocyte differentiation during carcinogenesis. We hypothesized that the association between high body mass index (BMI) and colorectal carcinoma incidence might differ according to tumor histopathologic differentiation status. Using databases of the Nurses' Health Study and Health Professionals Follow-up Study, and duplication-method Cox proportional hazards models, we prospectively examined an association between BMI and the incidence of colorectal carcinoma subtypes classified by differentiation features...
May 16, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28501436/identification-of-the-bovine-hsl-gene-expression-profiles-and-its-association-with-fatty-acid-composition-and-fat-deposition-traits
#17
Xibi Fang, Zhihui Zhao, Ping Jiang, Haibin Yu, Hang Xiao, Runjun Yang
Hormone-sensitive lipase (HSL) is an intracellular neutral lipase capable of hydrolysing a variety of esters and is considered to be a candidate gene affecting fat deposition traits. Gene expression profiles of HSL were analysed in various adipose tissues of cattle, and the effect of HSL on lipid metabolism genes was analysed by a PCR array. Novel polymorphisms were identified within the HSL regulatory domain by sequencing, and the relationship between HSL variants and fat deposition traits was analysed. HSL mRNA was highly expressed in the subcutaneous and visceral fat of cattle...
May 6, 2017: Meat Science
https://www.readbyqxmd.com/read/28475135/modulation-of-ho-1-by-ferulic-acid-attenuates-adipocyte-differentiation-in-3t3-l1-cells
#18
Eun-Jeong Koh, Kui-Jin Kim, Young-Jin Seo, Jia Choi, Boo-Yong Lee
Ferulic acid (FA) is phenolic compound found in fruits. Many studies have reported that FA has diverse therapeutic effects against metabolic diseases. However, the mechanism by which FA modulates adipogenesis via the expression of heme oxygenase-1 (HO-1) implicated in suppression of adipocyte differentiation is not fully understood. We investigated whether HO-1 can be activated by FA and suppress adipogenic factors in 3T3-L1. Our results showed that FA suppresses triglyceride-synthesizing enzymes, fatty acid synthase (FASN) and acetyl-CoA carboxylase (ACC)...
May 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28457799/dietary-treatment-of-fatty-liver-high-dietary-protein-content-has-an-antisteatotic-and-antiobesogenic-effect-in-mice
#19
Sonia C Garcia Caraballo, Tine M Comhair, Cornelis H C Dejong, Wouter H Lamers, S Eleonore Koehler
Few studies have assessed the effect of changing ratios of dietary macronutrients on fat accumulation in adipose tissue and organs such as the liver in a 3×n(n≥3) factorial design. We investigated the effects of 7 diets from a single manufacturer containing 11-58en% protein (casein), 0-81en% carbohydrates (CHO; sucrose, maltrodextrin-10 and corn starch), and 8-42en% fat (triheptanoin, olive oil or cocoa butter) in C57BL/6J mice, a good model for diet-induced obesity and fatty liver. The diets were fed for 3weeks to wild-type and hyperlipidemic male and female mice...
April 28, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28449683/inhibition-of-nampt-aggravates-high-fat-diet-induced-hepatic-steatosis-in-mice-through-regulating-sirt1-ampk%C3%AE-srebp1-signaling-pathway
#20
Ling-Fang Wang, Xiao-Nv Wang, Cong-Cong Huang, Long Hu, Yun-Fei Xiao, Xiao-Hui Guan, Yi-Song Qian, Ke-Yu Deng, Hong-Bo Xin
BACKGROUND: Nonalcoholic fatty liver disease is one of the most common liver diseases in the world and is a typical hepatic manifestation of metabolic syndrome which is characterized with lipid accumulation in liver. Nicotinamide phosphoribosyltransferase (NAMPT) has been recently identified as an enzyme involved in nicotinamide adenine dinucleotide (NAD(+)) biosynthesis and plays an important role in cellular metabolism in variety of organs in mammals. The aim of this study was to investigate the effects of NAMPT on high fat diet-induced hepatic steatosis...
April 27, 2017: Lipids in Health and Disease
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