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https://www.readbyqxmd.com/read/28932925/hepatic-complications-of-anorexia-nervosa
#1
REVIEW
Elissa Rosen, Neeru Bakshi, Ashlie Watters, Hugo R Rosen, Philip S Mehler
Anorexia nervosa (AN) has the highest mortality rate of all psychiatric illnesses due to the widespread organ dysfunction caused by the underlying severe malnutrition. Starvation causes hepatocyte injury and death leading to a rise in aminotransferases. Malnutrition-induced hepatitis is common among individuals with AN especially as body mass index decreases. Acute liver failure associated with coagulopathy and encephalopathy can rarely occur. Liver enzymes may also less commonly increase as part of the refeeding process due to hepatic steatosis and can be distinguished from starvation hepatitis by the finding of a fatty liver on ultrasonography...
September 20, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28928236/histone-deacetylase-inhibition-ameliorates-hypertension-and-hyperglycemia-in-a-model-of-cushing-s-syndrome
#2
Hae-Ahm Lee, Seol-Hee Kang, Mina Kim, Eunjo Lee, Hyun-Min Cho, Eun-Kyung Moon, Inkyeom Kim
Cushing's syndrome (CS) caused by hypercortisolism is occasionally accompanied by metabolic disorders such as hypertension, diabetes mellitus (DM), dyslipidemia and central obesity. Thus, morbidity and mortality, observed in cardiovascular disease, are elevated in patients with CS. We hypothesized that HDAC inhibition (HDACi) decreased transcriptional activity of glucocorticoid receptor (GR), which ameliorates hypertension and hyperglycemia in patients with CS. To establish an animal model of hypercortisolism, Sprague-Dawley rats were infused with adrenocorticotropic hormone (ACTH, 40 ng/day) or dexamethasone (Dex, 10 μg/day) via osmotic minipumps for 4 weeks...
September 19, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28926951/insights-into-the-hexose-liver-metabolism-glucose-versus-fructose
#3
REVIEW
Bettina Geidl-Flueck, Philipp A Gerber
High-fructose intake in healthy men is associated with characteristics of metabolic syndrome. Extensive knowledge exists about the differences between hepatic fructose and glucose metabolism and fructose-specific mechanisms favoring the development of metabolic disturbances. Nevertheless, the causal relationship between fructose consumption and metabolic alterations is still debated. Multiple effects of fructose on hepatic metabolism are attributed to the fact that the liver represents the major sink of fructose...
September 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28911865/3-2-amino-ethyl-5-3-4-butoxyl-phenyl-propylidene-thiazolidine-2-4-dione-k145-ameliorated-dexamethasone-induced-hepatic-gluconeogenesis-through-activation-of-akt-foxo1-pathway
#4
Yanan Shi, Jiayun Qiao, Biao Mu, Bingfeng Zuo, Jihong Yuan
3-(2-amino-ethyl)-5-[3-(4-butoxyl-phenyl)-propylidene]-thiazolidine-2,4-dione (K145) is identified as a selective SphK2 inhibitor. It was previously reported as an anti-tumor agent, in this study we demonstrated that K145 was able to regulate hepatic gluconeogenesis and improve glucose intolerance in mice. C57BL/6 mice treated with dexamethasone injection were used as experimental animals, which exhibited impaired glucose tolerance and increased gluconeogenetic enzymes. After K145 treatment, we found that the impairment of glucose tolerance and gluconeogenetic genes mRNA expression were improved...
September 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28911860/glucose-elicits-serine-threonine-kinase-vrk1-to-phosphorylate-nuclear-pregnane-x-receptor-as-a-novel-hepatic-gluconeogenic-signal
#5
Saki Gotoh, Yuu Miyauchi, Rick Moore, Masahiko Negishi
Low glucose stimulated phosphorylation of pregnane X receptor (PXR) at Ser(350) in correlation with an increased gluconeogenesis in human hepatoma-derived HepG2 cells. Only glucose, but neither insulin nor glucagon, stimulated this phosphorylation. Here, serine/threonine kinase, vaccinia related kinase 1 (VRK1)-mediated phosphorylation of PXR is now defined as this glucose-elicited novel signal. In low glucose conditions, VRK1 directly phosphorylates PXR at Ser(350), enabling PO3-PXR to scaffold protein phosphatase PP2Cα...
September 11, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28902910/pituitary-genomic-expression-profiles-of-steers-are-altered-by-grazing-of-high-vs-low-endophyte-infected-tall-fescue-forages
#6
Qing Li, Raquel Hegge, Phillip J Bridges, James C Matthews
Consumption of ergot alkaloid-containing tall fescue grass impairs several metabolic, vascular, growth, and reproductive processes in cattle, collectively producing a clinical condition known as "fescue toxicosis." Despite the apparent association between pituitary function and these physiological parameters, including depressed serum prolactin; no reports describe the effect of fescue toxicosis on pituitary genomic expression profiles. To identify candidate regulatory mechanisms, we compared the global and selected targeted mRNA expression patterns of pituitaries collected from beef steers that had been randomly assigned to undergo summer-long grazing (89 to 105 d) of a high-toxic endophyte-infected tall fescue pasture (HE; 0...
2017: PloS One
https://www.readbyqxmd.com/read/28901894/dietary-starch-types-affect-liver-nutrient-metabolism-of-finishing-pigs
#7
Chen Xie, Yanjiao Li, Jiaolong Li, Lin Zhang, Guanghong Zhou, Feng Gao
This study aimed to evaluate the effect of different starch types on liver nutrient metabolism of finishing pigs. In all ninety barrows were randomly allocated to three diets with five replicates of six pigs, containing purified waxy maize starch (WMS), non-waxy maize starch (NMS) and pea starch (PS) (the amylose to amylopectin ratios were 0·07, 0·19 and 0·28, respectively). After 28 d of treatments, two per pen (close to the average body weight of the pen) were weighed individually, slaughtered and liver samples were collected...
September 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28900165/gcn5l1-modulates-cross-talk-between-mitochondria-and-cell-signaling-to-regulate-foxo1-stability-and-gluconeogenesis
#8
Lingdi Wang, Iain Scott, Lu Zhu, Kaiyuan Wu, Kim Han, Yong Chen, Marjan Gucek, Michael N Sack
The mitochondrial enriched GCN5-like 1 (GCN5L1) protein has been shown to modulate mitochondrial protein acetylation, mitochondrial content and mitochondrial retrograde signaling. Here we show that hepatic GCN5L1 ablation reduces fasting glucose levels and blunts hepatic gluconeogenesis without affecting systemic glucose tolerance. PEPCK and G6Pase transcript levels are downregulated in hepatocytes from GCN5L1 liver specific knockout mice and their upstream regulator, FoxO1 protein levels are decreased via proteasome-dependent degradation and via reactive oxygen species mediated ERK-1/2 phosphorylation...
September 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28894632/dietary-incorporation-of-whey-protein-isolate-and-galactooligosaccharides-exhibits-improvement-in-glucose-homeostasis-and-insulin-resistance-in-high-fat-diet-fed-mice
#9
Praveen Kumar Kavadi, Ramesh Pothuraju, Jayasimha Chagalamarri, Gaurav Bhakri, Aswani Mallepogu, Raj Kumar Sharma
BACKGROUND: This study was planned to investigate the effectiveness of the whey protein isolate (WPI) of high purity and a galactooligosaccharides (GOS) preparation on glucose homeostasis and insulin resistance in high fat diet (HFD) (45.47% energy from fat) fed conditions in C57BL/6J mice. METHODS: Fasting blood glucose level, serum insulin, and glucagon-like peptide-1 (enzyme-linked immunosorbent assay) were measured; also, homeostasis model assessment of insulin resistance (HOMA-IR) was determined in different treatment groups...
July 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28888610/effects-of-monensin-on-glucose-metabolism-in-transition-dairy-cows
#10
X Markantonatos, G A Varga
Eight multiparous periparturient Holstein cows fitted with ruminal cannula were used in a split plot design to evaluate the effects of monensin on plasma glucose metabolism. Diets were top-dressed daily with 0 mg/cow of monensin (control) or 300 mg/cow of monensin (MON) both pre- and postpartum. Plasma glucose kinetic parameters on d -13 ± 2.0 and 19 ± 1.6 relative to parturition were determined by using stable isotopes. Na-1-(13)C3-Propionate (labeled propionate) was infused into the rumen to measure glucose synthesis originating from ruminal propionate, and U-(13)C-glucose (labeled glucose) was injected into the jugular vein to determine total glucose kinetics...
September 6, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28888537/a-gtp-dependent-phosphoenolpyruvate-carboxykinase-from-crassostrea-gigas-involved-in-immune-recognition
#11
Zhao Lv, Limei Qiu, Weilin Wang, Zhaoqun Liu, Zhuang Xue, Zichao Yu, Xiaorui Song, Hao Chen, Lingling Wang, Linsheng Song
Phosphoenolpyruvate carboxykinase (PEPCK) is well known as a key enzyme involved in the metabolic pathway of gluconeogenesis in organisms, but the information about its involvement in immune response is still very limited. In the present study, a novel PEPCK homolog named CgPEPCK was identified from oyster Crassostrea gigas. The deduced amino acid sequence of CgPEPCK shared 52%-74% similarities with those from other known PEPCKs. There were one conserved guanosine triphosphate (GTP) binding site, one substrate binding site, one metal binding site and one active site in CgPEPCK...
September 6, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28887709/mapping-and-comparative-proteomic-analysis-of-the-starch-biosynthetic-pathway-in-rice-by-2d-page-ms
#12
Tao-Shan Chang, Chih-Wei Liu, Yu-Ling Lin, Chao-Yi Li, Arthur Z Wang, Min-Wei Chien, Chang-Sheng Wang, Chien-Chen Lai
Our results not only provide a comprehensive overview of the starch biosynthetic pathway in the developing endosperm but also reveal some important protein markers that regulate the synthesis of starch. In human diets, rice (Oryza sativa L.) is an important source of starch, a substantial amount of which is accumulated in developing endosperm. A better understanding of the complicated pathways involved in starch biosynthesis is needed to improve the yield and quality of rice and other cereal crops through breeding...
September 8, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28885689/systematic-analysis-of-mrna-expression-profiles-in-skeletal-muscle-of-patients-with-type-ii-diabetes-the-glucocorticoid-was-central-in-pathogenesis
#13
Kan Shao, Li-Sha Shen, Hui-Hua Li, Shan Huang, Yong Zhang
Since the past thirty years, the prevalence of diabetes has more than doubled, making it an urgent challenge globally. We carried out systematic analysis with the public data of mRNA expression profiles in skeletal muscle to study the pathogenesis, since insulin resistance in the skeletal muscle is an early feature. We utilized three GEO datasets, containing total 60 cases and 63 normal samples. After the background removal, R package QC was utilized to finish the preprocessing of datasets. We obtained a dataset containing 2481 genes and 123 samples after the pre-processing...
September 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28882676/malonylome-analysis-in-developing-rice-oryza-sativa-seeds-suggesting-that-protein-lysine-malonylation-is-well-conserved-and-overlaps-with-acetylation-and-succinylation-substantially
#14
Hana Mujahid, Xiaoxi Meng, Shihai Xing, Xiaojun Peng, Cailin Wang, Zhaohua Peng
In recent years, lysine malonylation has garnered wide spread interest due to its potential regulatory roles. While studies have been performed in bacteria, mouse, and human, the involvement and the biological function of this modification in plant are still largely unknown. We examined the global proteome profile of lysine malonylation in developing rice seeds using affinity enrichment followed by LC-MS/MS analysis. We identified 421 malonylated lysine sites across 247 proteins. Functional analyses showed predominant presence of malonylated proteins in metabolic processes, including carbon metabolism, glycolysis/gluconeogenesis, TCA cycle, as well as photosynthesis...
September 4, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28878197/fructose-consumption-lipogenesis-and-non-alcoholic-fatty-liver-disease
#15
REVIEW
Kasper W Ter Horst, Mireille J Serlie
Increased fructose consumption has been suggested to contribute to non-alcoholic fatty liver disease (NAFLD), dyslipidemia, and insulin resistance, but a causal role of fructose in these metabolic diseases remains debated. Mechanistically, hepatic fructose metabolism yields precursors that can be used for gluconeogenesis and de novo lipogenesis (DNL). Fructose-derived precursors also act as nutritional regulators of the transcription factors, including ChREBP and SREBP1c, that regulate the expression of hepatic gluconeogenesis and DNL genes...
September 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28877911/hepatic-gale-regulates-whole-body-glucose-homeostasis-by-modulating-tff3-expression
#16
Yi Zhu, Shangang Zhao, Yingfeng Deng, Ruth Gordillo, Alexandra L Ghaben, Mengle Shao, Fang Zhang, Ping Xu, Yang Li, Huachuan Cao, Olga Zagnitko, David A Scott, Rana K Gupta, Chao Xing, Bei B Zhang, Hua V Lin, Philipp E Scherer
Transcripts of key enzymes in the Leloir pathway of galactose metabolism in mouse livers are significantly increased after chronic high-fat high-sucrose feeding. UDP-galactose-4-epimerase (GALE) is the last enzyme in this pathway that converts UDP-galactose to UDP-glucose and was previously identified as a downstream target of the endoplasmic reticulum (ER) stress effector spliced X-box binding protein 1, suggesting an interesting crosstalk between galactose and glucose metabolism in the context of hepatic ER stress and whole body metabolic fitness...
September 6, 2017: Diabetes
https://www.readbyqxmd.com/read/28876386/a-possible-relationship-between-gluconeogenesis-and-glycogen-metabolism-in-rabbits-during-myocardial-ischemia
#17
Raquel R DE Aguiar, Daniela F Vale, Renato M DA Silva, Yolanda P Muniz, Fernanda Antunes, Carlos Logullo, André L A Oliveira, Adriana J DE Almeida
Ischemia is responsible for many metabolic abnormalities in the heart, causing changes in organ function. One of modifications occurring in the ischemic cell is changing from aerobic to anaerobic metabolism. This change causes the predominance of the use of carbohydrates as an energy substrate instead of lipids. In this case, the glycogen is essential to the maintenance of heart energy intake, being an important reserve to resist the stress caused by hypoxia, using glycolysis and lactic acid fermentation. In order to study the glucose anaerobic pathways utilization and understand the metabolic adaptations, New Zealand white rabbits were subjected to ischemia caused by Inflow occlusion technique...
August 31, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28874698/comparative-transcriptome-analysis-of-the-pacific-white-shrimp-litopenaeus-vannamei-muscle-reveals-the-molecular-basis-of-residual-feed-intake
#18
Ping Dai, Sheng Luan, Xia Lu, Kun Luo, Jie Kong
Feed efficiency is an economically important trait in genetic improvement programs of L. vannamei. Residual feed intake (RFI), an ideal measure of feed efficiency, is the difference between observed feed intake and expected feed requirement predicted from maintenance and production. Exploring the molecular basis of RFI is essential to facilitate the genetic breeding of feed efficiency in L. vannamei. However, few studies have been reported in this aspect. In this study, we sequenced muscle transcriptomes of a high-efficiency group, a low-efficiency group and a control group originating from two families, and compared the gene expression patterns between each extreme group and the control group...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28868790/insulin-regulation-of-gluconeogenesis
#19
REVIEW
Maximilian Hatting, Clint D J Tavares, Kfir Sharabi, Amy K Rines, Pere Puigserver
The coordinated regulation between cellular glucose uptake and endogenous glucose production is indispensable for the maintenance of constant blood glucose concentrations. The liver contributes significantly to this process by altering the levels of hepatic glucose release, through controlling the processes of de novo glucose production (gluconeogenesis) and glycogen breakdown (glycogenolysis). Various nutritional and hormonal stimuli signal to alter hepatic gluconeogenic flux, and suppression of this metabolic pathway during the postprandial state can, to a significant extent, be attributed to insulin...
September 3, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28867301/nonalcoholic-fatty-liver-disease-as-a-nexus-of-metabolic-and-hepatic-diseases
#20
REVIEW
Varman T Samuel, Gerald I Shulman
NAFLD is closely linked with hepatic insulin resistance. Accumulation of hepatic diacylglycerol activates PKC-ε, impairing insulin receptor activation and insulin-stimulated glycogen synthesis. Peripheral insulin resistance indirectly influences hepatic glucose and lipid metabolism by increasing flux of substrates that promote lipogenesis (glucose and fatty acids) and gluconeogenesis (glycerol and fatty acid-derived acetyl-CoA, an allosteric activator of pyruvate carboxylase). Weight loss with diet or bariatric surgery effectively treats NAFLD, but drugs specifically approved for NAFLD are not available...
August 29, 2017: Cell Metabolism
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