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https://www.readbyqxmd.com/read/29323266/aif-loss-deregulates-hematopoiesis-and-reveals-different-adaptive-metabolic-responses-in-bone-marrow-cells-and-thymocytes
#1
Lauriane Cabon, Audrey Bertaux, Marie-Noëlle Brunelle-Navas, Ivan Nemazanyy, Laurianne Scourzic, Laure Delavallée, Laura Vela, Mathieu Baritaud, Sandrine Bouchet, Cécile Lopez, Vu Quang Van, Kevin Garbin, Danielle Chateau, Françoise Gilard, Marika Sarfati, Thomas Mercher, Olivier A Bernard, Santos A Susin
Mitochondrial metabolism is a tightly regulated process that plays a central role throughout the lifespan of hematopoietic cells. Herein, we analyze the consequences of the mitochondrial oxidative phosphorylation (OXPHOS)/metabolism disorder associated with the cell-specific hematopoietic ablation of apoptosis-inducing factor (AIF). AIF-null (AIF-/Y ) mice developed pancytopenia that was associated with hypocellular bone marrow (BM) and thymus atrophy. Although myeloid cells were relatively spared, the B-cell and erythroid lineages were altered with increased frequencies of precursor B cells, pro-erythroblasts I, and basophilic erythroblasts II...
January 11, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29317208/zinc-alpha2-glycoprotein-promotes-browning-in-adipocytes
#2
Xin-Hua Xiao, Xiao-Yan Qi, Ya-Di Wang, Li Ran, Jing Yang, Huan-Li Zhang, Can-Xin Xu, Ge-Bo Wen, Jiang-Hua Liu
Recent studies have highlighted recruiting and activating brite adipocytes in WAT (so-called "browning") would be an attractive anti-obesity strategy. Zinc alpha2 glycoprotein (ZAG) is reported to ameliorate glycolipid metabolism and lose body weight in obese mice. However whether the body reducing effect mediated by browning programme remains unclear. Here, we show that overexpression of ZAG in 3T3-L1 adipocytes enhanced expression of brown fat-specific markers (UCP-1, PRDM16 and CIDEA), mitochondrial biogenesis genes (PGC-1α, NRF-1/2 and mtTFA) and the key lipid metabolism lipases (ATGL, HSL, CPT1-A and p-acyl-CoA carboxylase)...
January 6, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29314768/medium-and-long-chain-acylcarnitines-are-associated-with-osteoarthritis-severity-and-arterial-stiffness-in-end-stage-osteoarthritis-patients-a-case-control-study
#3
Kaspar Tootsi, Jaak Kals, Mihkel Zilmer, Kaido Paapstel, Aigar Ottas, Aare Märtson
AIM: Arterial pathology has been suggested to be involved in osteoarthritis (OA). Metabolic profiling enables the determination of low-molecular-weight molecules, which might further explain the pathogenesis of OA and its relationship with cardiovascular diseases (CVD). The aim of this study was to compare the metabolic profile of lipid metabolism-related compounds and arterial stiffness in OA patients and in controls. METHOD: The serum of 70 end-stage OA patients prior to joint replacement surgery and 82 age-matched controls were analyzed by the AbsoluteIDQ™ p180 kit (BIOCRATES Life Sciences AG, Innsbruck, Austria) using the targeted metabolomic approach...
January 4, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29311481/a-ppar-pan-agonist-mhy2013-alleviates-age-related-hepatic-lipid-accumulation-by-promoting-fatty-acid-oxidation-and-suppressing-inflammation
#4
Hye Jin An, Bonggi Lee, Seong Min Kim, Dae Hyun Kim, Ki Wung Chung, Su Gyeong Ha, Kyung Chul Park, Yeo Jin Park, Seong Jin Kim, Hwi Young Yun, Pusoon Chun, Byung Pal Yu, Hyung Ryong Moon, Hae Young Chung
Nonalcoholic fatty liver disease (NAFLD) is frequently observed in obese and aged individuals. Peroxisome proliferator-activated receptors (PPARs) play a role in regulating hepatic lipid accumulation, a hallmark of NAFLD development. A PPAR pan agonist, 2-(4-(5,6-methylenedioxybenzo[d]thiazol-2-yl)-2-methylphenoxy)-2-methylpropanoic acid (MHY2013) has been shown to prevent fatty liver formation and insulin resistance in obese mice (db/db) model. However, the beneficial effects of MHY2013 in aged model remain unknown...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29242375/control-of-adventitious-root-architecture-in-rice-by-darkness-light-and-gravity
#5
Chen Lin, Margret Sauter
Rice is a semiaquatic plant that is well adapted to partial flooding. Rice stems develop adventitious root (AR) primordia at each node that slowly mature but emerge only when the plant gets flooded leading to the formation of a whole new secondary root system upon flooding. AR growth is induced by ethylene that accumulates in submerged plant tissues due to its lowered diffusion rate in water. Here we report that the architecture of the secondary root system in flooded rice plants is not only controlled by altered gas diffusion but also by gravity and light...
December 14, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29221849/molecular-regulation-of-fatty-acid-oxidation-in-skeletal-muscle-during-aerobic-exercise
#6
REVIEW
Anne-Marie Lundsgaard, Andreas Mæchel Fritzen, Bente Kiens
This review summarizes how fatty acid (FA) oxidation is regulated in skeletal muscle during exercise. From the available evidence it seems that acetyl-CoA availability in the mitochondrial matrix adjusts FA oxidation to exercise intensity and duration. This is executed at the step of mitochondrial fatty acyl import, as the extent of acetyl group sequestration by carnitine determines the availability of carnitine for the carnitine palmitoyltransferase 1 (CPT1) reaction. The rate of glycolysis seems therefore to be central to the amount of β-oxidation-derived acetyl-CoA that is oxidized in the tricarboxylic acid (TCA) cycle...
January 2018: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/29217172/nobiletin-induces-brown-adipocyte-like-phenotype-and-ameliorates-stress-in-3t3-l1-adipocytes
#7
Jameel Lone, Hilal Ahmad Parray, Jong Won Yun
Browning of white adipocytes (beiging) is an attractive therapeutic strategy against obesity and its associated metabolic complications. Nobiletin (NOB) is a polymethoxylated flavone present in Citrus fruits and has been reported to have anti-obesity effects. Here, we report that nobiletin exerts dual modulatory effects on adipocytes via induction of browning in 3T3-L1 white adipocytes and amelioration of stress in adipocytes. Nobiletin-induced beiging was investigated by determining expression levels of beige-specific genes and proteins by RT-PCR and immunoblot analysis, respectively...
December 4, 2017: Biochimie
https://www.readbyqxmd.com/read/29212325/chronic-heat-stress-impairs-meat-quality-of-breast-muscle-in-broilers-through-affecting-redox-status-and-energy-substances-metabolism
#8
Zhuang Lu, Xiaofang He, Bingbing Ma, Lin Zhang, Jiaolong Li, Yun Jiang, Guanghong Zhou, Feng Gao
We investigated the molecular mechanisms of chronic heat stress impairing broilers breast meat quality. Broilers were assigned to three groups including normal control (NC) group, heat stress (HS) group and pair-fed (PF) group. After 7d of heat exposure (32°C), high temperature caused oxidative stress, and elevated the activity of citrate synthase (CS), mRNA expression of M-CPT1, and phosphorylation level of AMPKα, and reduced the mRNA expression of avUCP. After 14d of heat exposure, heat stress increased lightness and drip loss and decreased pH and shear force of breast meat...
December 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29203241/the-splicing-factor-transformer2-tra2-functions-in-the-drosophila-fat-body-to-regulate-lipid-storage
#9
Cezary Mikoluk, Alexis A Nagengast, Justin R DiAngelo
Excess nutrients are stored as triglycerides mainly in the adipose tissue of an animal and these triglycerides are located in structures called lipid droplets. Previous genome-wide RNAi screens in Drosophila cells identified splicing factors as playing a role in lipid droplet formation. Our lab has recently identified the SR protein, 9G8, as an important factor in fat storage as decreasing its levels results in augmented triglyceride storage in the fat body. Previous in vitro studies have implicated 9G8 in the regulation of splicing of the sex determination gene doublesex (dsx) by binding to transformer (tra) and transformer2 (tra2); however, any function of these sex determination proteins in regulating metabolism is unknown...
December 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29198236/acetate-alters-the-process-of-lipid-metabolism-in-rabbits
#10
C Fu, L Liu, F Li
An experiment was conducted to investigate the effect of acetate treatment on lipid metabolism in rabbits. New Zealand Rabbits (30 days, n=80) randomly received a subcutaneous injection (2 ml/injection) of 0, 0.5, 1.0 or 2.0 g/kg per day body mass acetate (dissolved in saline) for 4 days. Our results showed that acetate induced a dose-dependent decrease in shoulder adipose (P0.05), acetate treatment significantly decreased the plasma adiponectin, insulin and triglyceride concentrations (P<0.05). In adipose, acetate injection significantly up-regulated the gene expression of peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer-binding protein α (C/EBPα), differentiation-dependent factor 1 (ADD1), adipocyte protein 2 (aP2), carnitine palmitoyltransferase 1 (CPT1), CPT2, hormone-sensitive lipase (HSL), G protein-coupled receptor (GPR41), GPR43, adenosine monophosphate-activated protein kinase α1 (AMPKα1), adiponectin receptor (AdipoR1), AdipoR2 and leptin receptor...
December 4, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29197622/protective-effects-of-dioscin-against-fructose-induced-renal-damage-via-adjusting-sirt3-mediated-oxidative-stress-fibrosis-lipid-metabolism-and-inflammation
#11
Yujie Qiao, Lina Xu, Xufeng Tao, Lianhong Yin, Yan Qi, Youwei Xu, Xu Han, Zeyao Tang, Xiaodong Ma, Kexin Liu, Jinyong Peng
In the present work, the effects and possible mechanisms of dioscin, one natural product from the famous vegetable Dioscoreae rhizoma (Shanyao in Chinese), against high fructose-induced renal injury in rats were tested. The results showed that dioscin significantly restored fructose-induced renal injury by decreasing the levels of Cr, BUN, and rehabilitating histopathological changes. In addition, dioscin markedly adjusted the levels of MDA, SOD and GSH-Px, reduced ROS level in renal tissue, and decreased the levels of TG, FFA, α-SMA and COL1A...
December 2, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29178253/kefir-peptides-prevent-hyperlipidemia-and-obesity-in-high-fat-diet-induced-obese-rats-via-lipid-metabolism-modulation
#12
Yu-Tang Tung, Hsiao-Ling Chen, Hsin-Shan Wu, Mei-Hsuan Ho, Kowit-Yu Chong, Chuan-Mu Chen
SCOPE: Obesity has reached epidemic proportions worldwide. Obesity is a complex metabolic disorder that is linked to numerous serious health complications with high morbidity. The present study evaluated the effects of kefir peptides on high fat diet-induced obesity in rats. METHODS AND RESULTS: Kefir peptides markedly improved obesity, including body weight gain, inflammatory reactions and the formation of adipose tissue fat deposits around the epididymis and kidney, and adipocyte size...
November 24, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29148037/growth-performance-fatty-acid-composition-lipid-deposition-and-hepatic-lipid-metabolism-related-gene-expression-in-juvenile-pond-loach-misgurnus-anguillicaudatus-fed-diets-with-different-dietary-soybean-oil-levels
#13
Y Li, Z Jia, X Liang, D Matulic, M Hussein, J Gao
A 10 week feeding trial was conducted to evaluate the effects of different dietary soybean oil (SO) levels on growth performance, fatty-acid composition and lipid deposition in viscera, histology and histochemistry of liver, intestine and hepatic-lipid metabolism-related gene expressions in pond loach Misgurnus anguillicaudatus juveniles. Misgurnus anguillicaudatus (mean ± s.d. mass 0·40 ± 0·01 g) were fed five experimental diets containing SO at different concentrations: 0, 20, 32, 56 and 100% SO and a diet containing 100% fish oil (100% FO)...
November 17, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/29136581/honokiol-exerts-dual-effects-on-browning-and-apoptosis-of-adipocytes
#14
Jameel Lone, Jong Won Yun
BACKGROUND: Induction of brown adipocyte-like phenotype (browning) in white adipocytes and promotion of apoptosis by dietary and pharmacological compounds is considered a novel strategy against obesity. Here, we show that honokiol exerts dual modulatory effects on adipocytes via induction of browning in 3T3-L1 white adipocytes and apoptosis as well as activation of HIB1B brown adipocytes combined with inhibition of apoptosis. METHODS: Honokiol-induced browning and apoptosis were investigated by determining expression levels of brown adipocyte-specific genes and proteins by RT-PCR and immunoblot analysis, respectively...
June 19, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29092796/ampk-activation-caused-by-reduced-liver-lactate-metabolism-protects-against-hepatic-steatosis-in-mct1-haploinsufficient-mice
#15
Lionel Carneiro, Mohamed Asrih, Cendrine Repond, Christine Sempoux, Jean-Christophe Stehle, Corinne Leloup, François R Jornayvaz, Luc Pellerin
OBJECTIVE: Hepatic steatosis is the first step leading to non-alcoholic fatty liver disease, which represents a major complication of obesity. Here, we show that MCT1 haploinsufficient mice resist to hepatic steatosis development when fed a high fat diet. They exhibit a reduced hepatic capacity to metabolize monocarboxylates such as lactate compared to wildtype mice. METHODS: To understand how this resistance to steatosis develops, we used HFD fed wildtype mice with hepatic steatosis and MCT1 haploinsufficient mice to study hepatic metabolism...
October 20, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29063809/thoracic-gamma-irradiation-induced-obesity-in-c57bl-6-female-mice
#16
Steven B Zhang, Shanmin Yang, Zhenhuan Zhang, Amy Zhang, Mei Zhang, Liangjie Yin, Katherine Casey-Sawicki, Steven Swarts, Sadasivan Vidyasagar, Lurong Zhang, Paul Okunieff
PURPOSE: To investigate the late effects of thoracic region irradiation (TRI) on mouse body weight. MATERIALS AND METHODS: Female C57BL/6 mice were divided into nonirradiated, 5 Gy total body irradiation, 9 Gy sub-total body irradiation, and 12.5 Gy thoracic region irradiation (TRI) groups. Changes in mouse weight were monitored every other week at similar time points for 12 months. The anatomical characteristics of abdominal visceral fat distribution were recorded, and mitochondrial DNA copy number in the hearts and livers and lipid metabolic signaling in the liver were analyzed...
October 24, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/29042644/hiv-1-viral-protein-r-vpr-induces-fatty-liver-in-mice-via-lxr%C3%AE-and-ppar%C3%AE-dysregulation-implications-for-hiv-specific-pathogenesis-of-nafld
#17
Neeti Agarwal, Dinakar Iyer, Chiara Gabbi, Pradip Saha, Sanjeet G Patel, Qianxing Mo, Benny Chang, Biman Goswami, Ulrich Schubert, Jeffrey B Kopp, Dorothy E Lewis, Ashok Balasubramanyam
HIV patients develop hepatic steatosis. We investigated hepatic steatosis in transgenic mice expressing the HIV-1 accessory protein Vpr (Vpr-Tg) in liver and adipose tissues, and WT mice infused with synthetic Vpr. Vpr-Tg mice developed increased liver triglyceride content and elevated ALT, bilirubin and alkaline phosphatase due to three hepatic defects: 1.6-fold accelerated de novo lipogenesis (DNL), 45% slower fatty acid ß-oxidation, and 40% decreased VLDL-triglyceride export. Accelerated hepatic DNL was due to coactivation by Vpr of liver X receptor-α (LXRα) with increased expression of its lipogenic targets Srebp1c, Chrebp, Lpk, Dgat, Fasn and Scd1, and intranuclear SREBP1c and ChREBP...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29038358/expression-of-genes-involved-in-carbohydrate-lipid-metabolism-in-muscle-and-fat-tissues-in-the-initial-stage-of-adult-age-obesity-in-fed-and-fasted-mice
#18
Nadezhda M Bazhan, Alexandr V Baklanov, Julia V Piskunova, Antonina J Kazantseva, Elena N Makarova
C57Bl mice exhibit impaired glucose metabolism by the late adult age under standard living conditions. The aim of this study was to evaluate white adipose tissue (WAT), brown adipose tissue (BAT), and skeletal muscle expression of genes involved in carbohydrate-lipid metabolism at postpubertal stages preceding the late adult age in C57Bl mice. Muscle mRNA levels of uncoupling protein 3 (Ucp3) and carnitine palmitoyltransferase 1 (Cpt1) (indicators of FFA oxidation), WAT mRNA levels of hormone-sensitive lipase (Lipe) and lipoprotein lipase (Lpl) (indicators of lipolysis and lipogenesis), muscle and WAT mRNA levels of the type 4 glucose transporter Slc2a4 (indicators of insulin-dependent glucose uptake), and BAT mRNA levels of uncoupling protein 1 (Ucp1) (indicator of thermogenesis) were measured in fed and 16 h-fasted mice in three age groups: 10-week-old (young), 15-week-old (early adult), and 30-week-old (late adult)...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/29024108/changes-in-hepatic-glucose-and-lipid-metabolism-related-parameters-in-domestic-pigeon-columba-livia-during-incubation-and-chick-rearing
#19
X P Wan, P Xie, Z Bu, X T Zou
This study aimed to evaluate the hepatic glucose and lipid metabolism-related parameters of adult male and female White King pigeons (Columba livia) during incubation and chick rearing. At day 4 (I4), 10 (I10) and 17 (I17) of incubation and day 1 (R1), 7 (R7), 15 (R15) and 25 (R25) of chick rearing, livers were sampled from six pigeons for each sex. Glycogen and fat contents, activities of glycolytic enzymes (hexokinase, HK; 6-phosphofructokinase, 6-PFK), and genes expressions of key enzymes involved in glycolysis (pyruvate kinase, PK; glucokinase, GK), gluconeogenesis (phosphoenolpyruvate carboxykinase cytosolic, PCK1; fructose-1,6-bisphosphatase, FBP1; glucose-6-phosphatase, G6Pase), fatty acid synthesis (fatty acid synthase, FAS; acetyl-CoA carboxylase, ACC) and fatty acid β-oxidation (carnitine palmitoyltransferase 1, CPT1; acyl-CoA 1, ACO) were measured...
October 12, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28993954/obesity-alleviating-potential-of-asiatic-acid-and-its-effects-on-acc1-ucp2-and-cpt1-mrna-expression-in-high-fat-diet-induced-obese-sprague-dawley-rats
#20
P Rameshreddy, V V Sathibabu Uddandrao, Parim Brahmanaidu, S Vadivukkarasi, Ramavat Ravindarnaik, Pothani Suresh, K Swapna, A Kalaivani, Parimi Parvathi, P Tamilmani, Ganapathy Saravanan
The present study evaluated the effects of asiatic acid (AA), a pentacyclic triterpenoid from Centella asiatica on lipid metabolism parameters in a rat model of obesity induced using a high fat diet (HFD) for 42 days. AA (20 mg/kg body weight [BW]) was administered orally once daily for 42 days, and an orlistat-treated group of rats (10 mg/kg BW) was included for comparison. Changes in BW, blood glucose levels, insulin resistance and leptin, adiponectin, amylase, and lipase levels in the blood; lipid profiles of plasma; liver antioxidants levels; and acetyl CoA carboxylase(ACC), uncoupling protein-2 (UCP2), and carnitine palmitoyltransferase-1 (CPT1) mRNA expression were observed in the experimental rats...
October 9, 2017: Molecular and Cellular Biochemistry
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