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stearoyl desaturase

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https://www.readbyqxmd.com/read/28526925/polyphenolic-extract-attenuates-fatty-acid-induced-steatosis-and-oxidative-stress-in-hepatic-and-endothelial-cells
#1
Laura Vergani, Giulia Vecchione, Francesca Baldini, Elena Grasselli, Adriana Voci, Piero Portincasa, Pier Francesco Ferrari, Bahar Aliakbarian, Alessandro A Casazza, Patrizia Perego
PURPOSE: Phenolic compounds (PC) of virgin olive oil exert several biochemical and pharmacological beneficial effects. Some dietary PC seem to prevent/improve obesity and metabolic-related disorders such as non-alcoholic fatty liver disease (NAFLD). We investigated the possible effects of PC extracted from olive pomace (PEOP) and of the main single molecules present in the extract (tyrosol, apigenin, oleuropein, p-coumaric and caffeic acid) in protecting hepatocytes and endothelial cells against triglyceride accumulation and oxidative stress...
May 19, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28526339/magnesium-isoglycyrrhizinate-blocks-fructose-induced-hepatic-nf-%C3%AE%C2%BAb-nlrp3-inflammasome-activation-and-lipid-metabolism-disorder
#2
Xiao-Juan Zhao, Yan-Zi Yang, Yan-Jing Zheng, Shan-Chun Wang, Hong-Mei Gu, Ying Pan, Shui-Juan Wang, Hong-Jiang Xu, Ling-Dong Kong
Magnesium isoglycyrrhizinate as a hepatoprotective agent possesses immune modulation and anti-inflammation, and treats liver diseases. But its effects on immunological-inflammatory and metabolic profiles for metabolic syndrome with liver injury and underlying potential mechanisms are not fully understood. In this study, magnesium isoglycyrrhizinate alleviated liver inflammation and lipid accumulation in fructose-fed rats with metabolic syndrome. It also suppressed hepatic inflammatory signaling activation by reducing protein levels of phosphorylation of nuclear factor-kappa B p65 (p-NF-κB p65), inhibitor of nuclear factor kappa-B kinase α/β (p-IKKα/β) and inhibitor of NF-κB α (p-IκBα) as well as nucleotide-binding domain (NOD)-like receptor protein 3 (NLRP3), apoptosis-associated speck-like protein (ASC) and Caspase-1 in rats, being consistent with its reduction of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and IL-6 levels...
May 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28515640/carcass-and-meat-characteristics-and-gene-expression-in-intramuscular-adipose-tissue-of-korean-native-cattle-fed-finishing-diets-supplemented-with-5-palm-oil
#3
Sungkwon Park, Zhang Yan, Changweon Choi, Kyounghoon Kim, Hyunjeong Lee, Youngkyoon Oh, Jinyoung Jeong, Jonggil Lee, Stephen B Smith, Seongho Choi
We hypothesized that supplementing finishing diets with palm oil would promote adipogenic gene expression but depress stearoyl-CoA desaturase (SCD) gene expression in intramuscular (i.m.) adipose tissues of Hanwoo steers during fattening period (from 16 to 32 mon of age). Fourteen Hanwoo steers were allotted randomly to 2 groups of 7 steers based on initial BW and fed either a basal diet (control) or the basal diet supplemented with 5% palm oil (BDSP). At slaughter, i.m. adipose tissue was harvested for analysis of adipogenic gene expression and fatty acid composition...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28486699/stearoyl-coa-desaturase-activity-in-bovine-cumulus-cells-protects-the-oocyte-against-saturated-fatty-acid-stress
#4
Hilde Aardema, Helena T A van Tol, Richard W Wubbolts, Jos F H M Brouwers, Bart M Gadella, Bernard A J Roelen
Metabolic rich and poor conditions are both characterized by elevated free fatty acid levels and have been associated with impaired female fertility. In particular, saturated free fatty acids have a dose-dependent negative impact on oocyte developmental competence, while mono-unsaturated free fatty acids appear less harmful. Cumulus cells seem to protect the oocyte against free fatty acids and the aim of this study was to determine the mechanism behind this protection In particular the role of the enzyme stearoyl-CoA desaturase (SCD) that converts saturated into mono-unsaturated fatty acids was investigated...
May 8, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28483521/sterol-regulatory-element-binding-protein-1-inhibitors-decrease-pancreatic-cancer-cell-viability-and-proliferation
#5
Siqingaowa, Sathiya Sekar, Venkat Gopalakrishnan, Changiz Taghibiglou
Sterol regulatory element-binding protein1 (SREBP1) is a key regulatory factor that controls lipid homeostasis. Overactivation of SREBP1 and elevated lipid biogenesis are considered the major characteristics in malignancies of prostate cancer, endometrial cancer, and glioblastoma. However, the impact of SREBP1 activation in the progression of pancreatic cancer has not been explored. The present study examines the effect of suppression of SREBP1 activation by its inhibitors like fatostatin and PF429242 besides analyzing the impact of inhibitory effects on SREBP1 downstream signaling cascade such as fatty acid synthase (FAS), hydroxymethylglutaryl-CoA reductase (HMGCoAR), stearoyl-CoA desaturase-1 (SCD-1), and tumor protein like p53 in MIA PaCa-2 pancreatic cancer cells...
May 5, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28477022/downregulated-long-noncoding-rna-aldbgalg0000005049-induces-inflammation-in-chicken-muscle-suffered-from-selenium-deficiency-by-regulating-stearoyl-coa-desaturase
#6
Ruifeng Fan, Changyu Cao, Xia Zhao, Qunxiang Shi, Jinxin Zhao, Shiwen Xu
Long non-coding RNAs (lncRNAs) have been demonstrated to play a pivotal role in proliferation and differentiation of muscles. However, the study on the roles of lncRNAs in Selenium (Se) deficiency induced muscle injury is still unclear. In this study, deep sequencing was performed to profile lncRNAs and mRNAs of the muscles from the Se deficiency (-Se group) and control (C group) chickens. The results revealed that 38 lncRNAs (23 up-regulated and 15 down-regulated) and 687 mRNAs (285 up-regulated and 402 down-regulated) were significantly dysregulated expressed, and the significantly dysregulated pathway including Phagosome, Cardiac muscle contraction, and Peroxisome Proliferator-Activated Receptor (PPAR) in -Se group...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28465608/depot-specific-differences-in-fatty-acid-composition-and-distinct-associations-with-lipogenic-gene-expression-in-abdominal-adipose-tissue-of-obese-women
#7
P Petrus, D Edholm, F Rosqvist, I Dahlman, M Sundbom, P Arner, M Rydén, U Risérus
Cardiometabolic diseases are primarily linked to enlarged visceral adipose tissue (VAT). However, some data suggest heterogeneity within the subcutaneous (SAT) depot with potential metabolic differences between the superficial (sSAT) and deep (dSAT) compartments. We aimed to investigate the heterogeneity of these three depots with regard to fatty acid (FA) composition and gene expression. Adipose tissue biopsies were collected from 75 obese women undergoing laparoscopic gastric bypass surgery. FA composition and gene expression were determined with gas chromatography and qRT-PCR, respectively...
May 3, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28461402/stearoyl-acyl-carrier-protein-desaturase-mutations-uncover-an-impact-of-stearic-acid-in-leaf-and-nodule-structure
#8
Naoufal Lakhssassi, Vincent Colantonio, Nicholas David Flowers, Zhou Zhou, Jason Scott Henry, Shiming Liu, Khalid Meksem
Stearoyl-acyl carrier protein desaturase (SACPD-C) has been reported to control the accumulation of seed stearic acid; however, no study has previously reported its involvement in leaf stearic acid content and impact on leaf structure and morphology. A subset of an EMS mutagenized population of soybean c.v. 'Forrest' was screened to identify mutants within the GmSACPD-C gene. Using a forward genetics approach, one nonsense and four missense Gmsacpd-c mutants were identified to have high levels of seed, nodule, and leaf stearic acid content...
May 1, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28458350/therapeutic-effect-of-gypenosides-on-nonalcoholic-steatohepatitis-via-regulating-hepatic-lipogenesis-and-fatty-acid-oxidation
#9
Hongshan Li, Hao Ying, Airong Hu, Yaoren Hu, Dezhou Li
Nonalcoholic steatohepatitis (NASH) is the most frequent cause of liver dysfunction and a common global problem. Gypenosides can decrease pathological modifications of high-fat diet-induced rat atherosclerosis; however, its effect and mechanism on NASH remain unclear. In this study, rats were randomly divided into normal control and model groups. Model rats were fed with a high-fat diet and treated with gypenosides, rosiglitazone, or water for 6 weeks. We found that liver tissues showed significant hepatic steatosis and vacuolar degeneration with significantly higher triglyceride (TG), free fatty acid (FFA) and malonyl CoA, serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma-glutamyl transferase (GGT) activities in model group versus normal control group (p<0...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28452935/the-stearoyl-coa-desaturase-1-desat1-in-drosophila-cooperated-with-myc-to-induce-autophagy-and-growth-a-potential-new-link-to-tumor-survival
#10
Chiara Paiardi, Zhasmine Mirzoyan, Sheri Zola, Federica Parisi, Andrea Vingiani, Maria Enrica Pasini, Paola Bellosta
Lipids are an important energy supply in our cells and can be stored or used to produce macromolecules during lipogenesis when cells experience nutrient starvation. Our proteomic analysis reveals that the Drosophila homologue of human Stearoyl-CoA desaturase-1 (Desat1) is an indirect target of Myc in fat cells. Stearoyl-CoA desaturases are key enzymes in the synthesis of monounsaturated fatty acids critical for the formation of complex lipids such as triglycerides and phospholipids. Their function is fundamental for cellular physiology, however in tumors, overexpression of SCD-1 and SCD-5 has been found frequently associated with a poor prognosis...
April 28, 2017: Genes
https://www.readbyqxmd.com/read/28448568/inhibitory-effects-of-fenretinide-metabolites-n-4-methoxyphenyl-retinamide-mpr-and-4-oxo-n-4-hydroxyphenyl-retinamide-3-keto-hpr-on-fenretinide-molecular-targets-%C3%AE-carotene-oxygenase-1-stearoyl-coa-desaturase-1-and-dihydroceramide-%C3%AE-4-desaturase-1
#11
Eugenia Poliakov, William Samuel, Todd Duncan, Danielle B Gutierrez, Nathan L Mata, T Michael Redmond
The therapeutic capacity of fenretinide (N-[4-hydroxyphenyl] retinamide; 4-HPR) has been demonstrated for several conditions, including cancer, obesity, diabetes, and ocular disease. Yet, the mechanisms of action for its pleiotropic effects are still undefined. We hypothesized that investigation of two of the major physiological metabolites of fenretinide, N-[4-methoxyphenyl]retinamide (MPR) and 4-oxo-N-(4-hydroxyphenyl)retinamide (3-keto-HPR), might begin to resolve the multifaceted effects of this synthetic retinoid...
2017: PloS One
https://www.readbyqxmd.com/read/28442322/in-vitro-and-in-vivo-antitumor-activities-of-t-3764518-a-novel-and-orally-available-small-molecule-stearoyl-coa-desaturase-1-inhibitor
#12
Satoru Nishizawa, Hiroyuki Sumi, Yoshihiko Satoh, Yukiko Yamamoto, Satoshi Kitazawa, Kohei Honda, Hideo Araki, Kazuyo Kakoi, Keisuke Imamura, Masako Sasaki, Ikuo Miyahisa, Yoshinori Satomi, Ryuuichi Nishigaki, Megumi Hirayama, Kazunobu Aoyama, Hironobu Maezaki, Takahito Hara
Most cancer cells are characterized by elevated lipid biosynthesis. The rapid proliferation of cancer cells requires de novo synthesis of fatty acids. Stearoyl-CoA desaturase-1 (SCD1), a key enzyme for lipogenesis, is overexpressed in various types of cancer and plays an important role in cancer cell proliferation. Therefore, it has been studied as a candidate target for cancer therapy. In this study, we demonstrate the pharmacological properties of T-3764518, a novel and orally available small molecule inhibitor of SCD1...
April 22, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28440456/tetrahydropalmatine-inhibits-lipid-accumulation-through-ampk-signaling-pathway-in-3t3%C3%A2-l1-adipocytes
#13
Guang-Chun Piao, Guan-Cheng Liu, Xue-Jun Jin, Dan Jin, Hai-Dan Yuan
Tetrahydropalmatine (THP), one of the active components of Rhizoma corydalis, has been reported to exert several pharmacological effects, including anti‑inflammatory, anti‑tumor and analgesic activities. However, its effect on obesity and the underlying molecular mechanisms that may be involved have not yet been elucidated. In the present study, the inhibitory effects of THP on the adipogenesis in 3T3‑L1 adipocytes was examined using hstology, western blotting and RT‑qPCR. THP was identified to significantly suppress lipid accumulation in 3T3‑L1 cells and it inhibited pre‑adipocyte differentiation in a concentration‑dependent manner, as evidenced by the reduced formation of lipid droplets and decreased triglyceride levels and glycerol‑3‑phosphate dehydrogenase activity...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28434739/the-effect-of-conjugated-linoleic-acid-acetate-and-their-interaction-on-adipose-tissue-lipid-metabolism-in-nonlactating-cows
#14
N Urrutia, Y Ying, K J Harvatine
During biohydrogenation-induced milk fat depression, adipose tissue lipogenesis may be increased through nutrients spared from milk fat synthesis. However, the direct effect of trans-10, cis-12 conjugated linoleic acid (CLA) and the indirect effect of spared nutrients on adipose tissue lipogenesis during milk fat depression is not clear. The objective of this study was to determine the direct effect of CLA, spared acetate, and their interaction on adipose tissue lipogenesis using nonlactating dairy cows as an experimental model, which allows separation of the effect of CLA and nutrient sparing...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28420650/changes-in-lxr-signaling-influence-early-pregnancy-lipogenesis-and-protect-against-dysregulated-fetoplacental-lipid-homeostasis
#15
Vanya Nikolova, Georgia Papacleovoulou, Elena Bellafante, Luiza Borges Manna, Eugene Jansen, Silvère Baron, Shadi Abu-Hayyeh, Malcolm G Parker, Catherine Williamson
Human pregnancy is associated with enhanced de novo lipogenesis in the early stages followed by hyperlipidemia during advanced gestation. Liver X receptors (LXRs) are oxysterol-activated nuclear receptors which stimulate de novo lipogenesis and also promote the efflux of cholesterol from extrahepatic tissues followed by its transport back to the liver for biliary excretion. Although LXR is recognized as a master regulator of triglyceride and cholesterol homeostasis it is unknown whether it facilitates the gestational adaptations in lipid metabolism...
April 18, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28402008/genome-wide-association-studies-reveal-additional-related-loci-for-fatty-acid-composition-in-a-duroc-pig-multigenerational-population
#16
Shuji Sato, Yoshinobu Uemoto, Takashi Kikuchi, Sachiko Egawa, Kimiko Kohira, Tomomi Saito, Hironori Sakuma, Satoshi Miyashita, Shinji Arata, Keiichi Suzuki
The aim of the present study was to detect quantitative trait loci affecting fatty acid composition in back fat and intramuscular fat in a Duroc pig population comprising seventh-generation pedigrees using genome-wide association studies (GWAS). In total, 305 animals were genotyped using single nucleotide polymorphisms (SNPs) array and five selected SNPs from regions containing known candidate genes related to fatty acid synthesis or metabolism. In total, 24 genome-wide significant SNP regions were detected in 12 traits, and 76 genome-wide suggestive SNP regions were detected in 33 traits...
April 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28397284/altered-fatty-acid-metabolism-and-reduced-stearoyl-coenzyme-a-desaturase-activity-in-asthma
#17
N Rodriguez-Perez, E Schiavi, R Frei, R Ferstl, P Wawrzyniak, S Smolinska, M Sokolowska, N A Sievi, M Kohler, P Schmid-Grendelmeier, D Michalovich, K D Simpson, E M Hessel, M Jutel, M Martin-Fontecha, O Palomares, C A Akdis, L O'Mahony
BACKGROUND: Fatty acids and lipid mediator signaling play an important role in the pathogenesis of asthma, yet this area remains largely under-explored. The aims of this study were (i) to examine fatty acid levels and their metabolism in obese and non-obese asthma patients and (ii) to determine the functional effects of altered fatty acid metabolism in experimental models. METHODS: Medium- and long-chain fatty acid levels were quantified in serum from 161 human volunteers by LC/MS...
April 11, 2017: Allergy
https://www.readbyqxmd.com/read/28393901/changes-in-scd-gene-dna-methylation-after-bariatric-surgery-in-morbidly-obese-patients-are-associated-with-free-fatty-acids
#18
Sonsoles Morcillo, Gracia Mª Martín-Núñez, Sara García-Serrano, Carolina Gutierrez-Repiso, Francisca Rodriguez-Pacheco, Sergio Valdes, Montserrat Gonzalo, Gemma Rojo-Martinez, Francisco J Moreno-Ruiz, Alberto Rodriguez-Cañete, Francisco Tinahones, Eduardo García-Fuentes
Stearoyl CoA Desaturase-1 (SCD) is considered as playing an important role in the explanation of obesity. The aim of this study was to evaluate whether the DNA methylation SCD gene promoter is associated with the metabolic improvement in morbidly obese patients after bariatric surgery. The study included 120 subjects with morbid obesity who underwent a laparoscopic Roux-en Y gastric by-pass (RYGB) and a control group of 30 obese subjects with a similar body mass index (BMI) to that found in morbidly obese subjects six months after RYGB...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28380598/dietary-whole-and-cracked-linseed-increases-the-proportion-of-oleic-and-%C3%AE-linolenic-acids-in-adipose-tissues-and-decreases-stearoyl-coenzyme-a-desaturase-acetyl-coenzyme-a-carboxylase-and-fatty-acid-synthase-gene-expression-in-the-longissimus-thoracis-muscle
#19
X Z Li, C G Yan, J Yu, Q S Gao, S H Choi, J S Shin, S B Smith
We hypothesized that supplementation of linseed in a beef cattle fattening diet would increase PUFA concentrations in intramuscular adipose tissue and depress (), (), and () gene expression by decreasing () expression. Conversely, supplemental linseed would upregulate expression of () and () in muscle of Yanbian Yellow steers. Thirty steers were assigned at random to 3 groups of 10 steers fed either the basal diet (corn grain and corn silage-based commercial concentrate [CON]), the CON diet plus 8% whole linseed (WLS; DM basis), or the CON diet plus 8% cracked linseed (CLS; DM basis) for 6 mo...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28380538/anabolic-payout-of-terminal-implant-alters-adipogenic-gene-expression-of-the-longissimus-muscle-in-beef-steers
#20
Z K Smith, K Y Chung, S L Parr, B J Johnson
This experiment evaluated the dose and payout pattern of trenbolone acetate (TBA) and estradiol-17β (E) on LM mRNA expression of adenosine monophosphate-activated protein kinase-ɑ (-ɑ), β, G protein-coupled receptor 41(), G protein-coupled receptor 43 (), γ, and stearoyl CoA desaturase () in finishing feedlot steers as indicators of adipogenesis and marbling development. British × Continental steers (n = 168; 14 pens/treatment; initial BW = 362 kg) were used in a randomized complete block design. Treatments included: no implant (NI), Revalor-S (REV-S; 120 mg TBA + 24 mg E), or Revalor-XS (REV-X; delayed release implant: 80 mg TBA + 16 mg E [uncoated], 120 mg TBA + 24 mg E [coated], 200 mg TBA + 40 mg E [total])...
March 2017: Journal of Animal Science
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