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https://www.readbyqxmd.com/read/28550509/possible-involvement-of-acss2-gene-in-alcoholism
#1
Andrea Frozino Ribeiro, Roseli Boerngen de Lacerda, Diego Correia, Ana Lúcia Brunialti-Godard, Débora Marques de Miranda, Valdir Ribeiro Campos, Valéria Fernandes de Souza, Angela Maria Ribeiro
Alcoholism is a psychiatric disorder that composes one of the principal causes of health disabilities in the world population. Furthermore, the available pharmacotherapy is limited. Therefore, this research was carried out to better understand the basis of the underlying neurobiological processes of this disorder and to discover potential therapeutic targets. Real-time PCR analysis was performed in the amygdala nuclei region of the brain of mice exposed to a chronic three-bottle free-choice model (water, 5 and 10% v/v ethanol)...
May 26, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28436483/itraq-based-proteomic-analysis-reveals-key-proteins-affecting-muscle-growth-and-lipid-deposition-in-pigs
#2
Zhixiu Wang, Peng Shang, Qinggang Li, Liyuan Wang, Yangzom Chamba, Bo Zhang, Hao Zhang, Changxin Wu
Growth rate and meat quality, two economically important traits in pigs, are controlled by multiple genes and biological pathways. In the present study, we performed a proteomic analysis of longissimus dorsi muscle from six-month-old pigs from two Chinese native mini-type breeds (TP and DSP) and two introduced western breeds (YY and LL) using isobaric tag for relative and absolute quantification (iTRAQ). In total, 4,815 peptides corresponding to 969 proteins were detected. Comparison of expression patterns between TP-DSP and YY-LL revealed 288 differentially expressed proteins (DEPs), of which 169 were up-regulated and 119 were down-regulated...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28393214/a-novel-mutation-c-121%C3%A2-13t-a-in-the-polypyrimidine-tract-of-the-splice-acceptor-site-of-intron-2-causes-exon-3-skipping-in-mitochondrial-acetoacetyl-coa-thiolase-gene
#3
Yuka Aoyama, Hideo Sasai, Elsayed Abdelkreem, Hiroki Otsuka, Mina Nakama, Sandeep Kumar, Shrikiran Aroor, Anju Shukla, Toshiyuki Fukao
Mitochondrial acetoacetyl-CoA thiolase (T2) (gene symbol: ACAT1) deficiency is an autosomal recessive disorder affecting isoleucine catabolism and ketone body utilization. In this study, mutational analysis of an Indian T2-deficient patient revealed a homozygous mutation (c.121‑13T>A) located at the polypyrimidine tract of the splice acceptor site of intron 2, and exon 3 skipping was identified by cDNA analysis using cycloheximide. We made three mutant constructs (c.121‑13T>A, T>C, and T>G substitutions) followed by making a wild-type minigene construct that included an ACAT1 segment from exon 2 to 4 for a splicing experiment...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28385599/intramyocellular-lipid-content-and-lipogenic-gene-expression-responses-following-a-single-bout-of-resistance-type-exercise-differ-between-young-and-older-men
#4
Kostas Tsintzas, Francis B Stephens, Tim Snijders, Benjamin T Wall, Scott Cooper, Joanne Mallinson, Lex B Verdijk, Luc J C van Loon
The aim of this study was to examine the temporal relationship between intramyocellular lipid (IMCL) content and the expression of genes associated with IMCL turnover, fat metabolism, and inflammation during recovery from an acute bout of resistance type exercise in old versus young men. Seven healthy young (23±2years, 77.2±2.9kg) and seven healthy older (72±1years, 79.3±4.9kg) males performed a single bout of resistance exercise involving 6 sets of 10 repetitions of leg press and 6 sets of 10 repetitions of leg extension at 75% one-repetition maximum (1-RM)...
July 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28361105/single-nucleotide-substitution-t-to-a-in-the-polypyrimidine-stretch-at-the-splice-acceptor-site-of-intron-9-causes-exon-10-skipping-in-the-acat1-gene
#5
Hideo Sasai, Yuka Aoyama, Hiroki Otsuka, Elsayed Abdelkreem, Mina Nakama, Tomohiro Hori, Hidenori Ohnishi, Lesley Turner, Toshiyuki Fukao
BACKGROUND: β-ketothiolase (T2, gene symbol ACAT1) deficiency is an autosomal recessive disorder, affecting isoleucine and ketone body metabolism. We encountered a patient (GK03) with T2 deficiency whose T2 mRNA level was <10% of the control, but in whom a previous routine cDNA analysis had failed to find any mutations. Genomic PCR-direct sequencing showed homozygosity for c.941-9T>A in the polypyrimidine stretch at the splice acceptor site of intron 9 of ACAT1. Initially, we regarded this variant as not being disease-causing by a method of predicting the effect of splicing using in silico tools...
March 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28220263/characterization-and-outcome-of-41-patients-with-beta-ketothiolase-deficiency-10%C3%A2-years-experience-of-a-medical-center-in-northern-vietnam
#6
Khanh Ngoc Nguyen, Elsayed Abdelkreem, Roberto Colombo, Yuki Hasegawa, Ngoc Thi Bich Can, Thao Phuong Bui, Hai Thanh Le, Mai Thi Chi Tran, Hoan Thi Nguyen, Hung Thanh Trinh, Yuka Aoyama, Hideo Sasai, Seiji Yamaguchi, Toshiyuki Fukao, Dung Chi Vu
Beta-ketothiolase (T2) deficiency is an inherited disease of isoleucine and ketone body metabolism caused by mutations in the ACAT1 gene. Between 2005 and 2016, a total of 41 patients with T2 deficiency were identified at a medical center in northern Vietnam, with an estimated incidence of one in 190,000 newborns. Most patients manifested ketoacidotic episodes of varying severity between 6 and 18 months of age. Remarkably, 28% of patients showed high blood glucose levels (up to 23.3 mmol/L). Ketoacidotic episodes recurred in 43% of patients...
February 20, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28039067/prenatal-betaine-exposure-alleviates-corticosterone-induced-inhibition-of-cyp27a1-expression-in-the-liver-of-juvenile-chickens-associated-with-its-promoter-dna-methylation
#7
Yun Hu, Qinwei Sun, Yibo Zong, Jie Liu, Abdulrahman A Idriss, Nagmeldin A Omer, Ruqian Zhao
Sterol 27-hydroxylase (CYP27A1) plays an important role in cholesterol homeostasis by degrading cholesterol to bile acids. Betaine can alleviate high-fat diet-induced hepatic cholesterol accumulation and maternal betaine treatment programs the hepatic expression of CYP27A1 in offspring. Excessive corticosterone (CORT) exposure causes hepatic cholesterol deposition in chickens, yet it remains unknown whether prenatal betaine modulates CORT-induced cholesterol accumulation in chicken liver later in life and whether it involves epigenetic gene regulation of CYP27A1...
May 15, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27928777/clinical-and-mutational-characterizations-of-ten-indian-patients-with-beta-ketothiolase-deficiency
#8
Elsayed Abdelkreem, Radha Rama Devi Akella, Usha Dave, Sudhir Sane, Hiroki Otsuka, Hideo Sasai, Yuka Aoyama, Mina Nakama, Hidenori Ohnishi, Shaimaa Mahmoud, Mohamed Abd El Aal, Toshiyuki Fukao
Beta-ketothiolase deficiency (mitochondrial acetoacetyl-CoA thiolase (T2) deficiency) is an inherited disease of isoleucine catabolism and ketone body utilization caused by ACAT1 mutations. We identified ten Indian patients who manifested with ketoacidotic episodes of variable severity. The patients showed increased urinary excretion of isoleucine-catabolic intermediates: 2-methyl-3-hydroxybutyrate, 2-methylacetoacetate, and tiglylglycine. Six patients had a favorable outcome, one died, and three developed neurodevelopmental sequela...
December 8, 2016: JIMD Reports
https://www.readbyqxmd.com/read/27912096/drugging-acat1-for-cancer-therapy
#9
Javier Garcia-Bermudez, Kivanç Birsoy
In this issue, Fan et al. (2016) show that oncogenic tyrosine kinases can promote glycolysis by phosphorylating and stabilizing the tetrameric form of mitochondrial acetyl-coA acetyltransferase 1 (ACAT1). The authors further identify a small molecule ACAT1 inhibitor that displays anti-cancer effects.
December 1, 2016: Molecular Cell
https://www.readbyqxmd.com/read/27867011/tetrameric-acetyl-coa-acetyltransferase-1-is-important-for-tumor-growth
#10
Jun Fan, Ruiting Lin, Siyuan Xia, Dong Chen, Shannon E Elf, Shuangping Liu, Yaozhu Pan, Haidong Xu, Zhiyu Qian, Mei Wang, Changliang Shan, Lu Zhou, Qun-Ying Lei, Yuancheng Li, Hui Mao, Benjamin H Lee, Jessica Sudderth, Ralph J DeBerardinis, Guojing Zhang, Taofeek Owonikoko, Manila Gaddh, Martha L Arellano, Hanna J Khoury, Fadlo R Khuri, Sumin Kang, Paul W Doetsch, Sagar Lonial, Titus J Boggon, Walter J Curran, Jing Chen
Mitochondrial acetyl-CoA acetyltransferase 1 (ACAT1) regulates pyruvate dehydrogenase complex (PDC) by acetylating pyruvate dehydrogenase (PDH) and PDH phosphatase. How ACAT1 is "hijacked" to contribute to the Warburg effect in human cancer remains unclear. We found that active, tetrameric ACAT1 is commonly upregulated in cells stimulated by EGF and in diverse human cancer cells, where ACAT1 tetramers, but not monomers, are phosphorylated and stabilized by enhanced Y407 phosphorylation. Moreover, we identified arecoline hydrobromide (AH) as a covalent ACAT1 inhibitor that binds to and disrupts only ACAT1 tetramers...
December 1, 2016: Molecular Cell
https://www.readbyqxmd.com/read/27813192/naltrexone-changes-the-expression-of-lipid-metabolism-related-proteins-in-the-endoplasmic-reticulum-er-stress-induced-hepatic-steatosis-in-mice
#11
Azam Moslehi, Fatemeh Nabavizadeh, Ali Zekri, Fatemeh Amiri
Endoplasmic reticulum (ER) stress is closely associated with several chronic diseases such as obesity, atherosclerosis, type 2 diabetes, and hepatic steatosis. Steatosis in hepatocytes may also lead to disorders such as non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH), fibrosis, and possibly cirrhosis. Opioid peptides are involved in triglyceride and cholesterol dysregulation. Naltrexone also attenuates ER stress induced hepatic steatosis in mice. In this study, we evaluated the effects of naltrexone on the expression of lipid metabolism-related nuclear factors and enzymes in the ER stress induced hepatic steatosis...
November 4, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/27809520/simultaneous-time-dependent-surface-enhanced-raman-spectroscopy-metabolomics-and-proteomics-reveal-cancer-cell-death-mechanisms-associated-with-gold-nanorod-photothermal-therapy
#12
Moustafa R K Ali, Yue Wu, Tiegang Han, Xiaoling Zang, Haopeng Xiao, Yan Tang, Ronghu Wu, Facundo M Fernández, Mostafa A El-Sayed
In cancer plasmonic photothermal therapy (PPTT), plasmonic nanoparticles are used to convert light into localized heat, leading to cancer cell death. Among plasmonic nanoparticles, gold nanorods (AuNRs) with specific dimensions enabling them to absorb near-infrared laser light have been widely used. The detailed mechanism of PPTT therapy, however, still remains poorly understood. Typically, surface-enhanced Raman spectroscopy (SERS) has been used to detect time-dependent changes in the intensity of the vibration frequencies of molecules that appear or disappear during different cellular processes...
November 30, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27796716/association-of-breast-cancer-risk-in-brca1-and-brca2-mutation-carriers-with-genetic-variants-showing-differential-allelic-expression-identification-of-a-modifier-of-breast-cancer-risk-at-locus-11q22-3
#13
Yosr Hamdi, Penny Soucy, Karoline B Kuchenbaeker, Tomi Pastinen, Arnaud Droit, Audrey Lemaçon, Julian Adlard, Kristiina Aittomäki, Irene L Andrulis, Adalgeir Arason, Norbert Arnold, Banu K Arun, Jacopo Azzollini, Anita Bane, Laure Barjhoux, Daniel Barrowdale, Javier Benitez, Pascaline Berthet, Marinus J Blok, Kristie Bobolis, Valérie Bonadona, Bernardo Bonanni, Angela R Bradbury, Carole Brewer, Bruno Buecher, Saundra S Buys, Maria A Caligo, Jocelyne Chiquette, Wendy K Chung, Kathleen B M Claes, Mary B Daly, Francesca Damiola, Rosemarie Davidson, Miguel De la Hoya, Kim De Leeneer, Orland Diez, Yuan Chun Ding, Riccardo Dolcetti, Susan M Domchek, Cecilia M Dorfling, Diana Eccles, Ros Eeles, Zakaria Einbeigi, Bent Ejlertsen, Christoph Engel, D Gareth Evans, Lidia Feliubadalo, Lenka Foretova, Florentia Fostira, William D Foulkes, George Fountzilas, Eitan Friedman, Debra Frost, Pamela Ganschow, Patricia A Ganz, Judy Garber, Simon A Gayther, Anne-Marie Gerdes, Gord Glendon, Andrew K Godwin, David E Goldgar, Mark H Greene, Jacek Gronwald, Eric Hahnen, Ute Hamann, Thomas V O Hansen, Steven Hart, John L Hays, Frans B L Hogervorst, Peter J Hulick, Evgeny N Imyanitov, Claudine Isaacs, Louise Izatt, Anna Jakubowska, Paul James, Ramunas Janavicius, Uffe Birk Jensen, Esther M John, Vijai Joseph, Walter Just, Katarzyna Kaczmarek, Beth Y Karlan, Carolien M Kets, Judy Kirk, Mieke Kriege, Yael Laitman, Maïté Laurent, Conxi Lazaro, Goska Leslie, Jenny Lester, Fabienne Lesueur, Annelie Liljegren, Niklas Loman, Jennifer T Loud, Siranoush Manoukian, Milena Mariani, Sylvie Mazoyer, Lesley McGuffog, Hanne E J Meijers-Heijboer, Alfons Meindl, Austin Miller, Marco Montagna, Anna Marie Mulligan, Katherine L Nathanson, Susan L Neuhausen, Heli Nevanlinna, Robert L Nussbaum, Edith Olah, Olufunmilayo I Olopade, Kai-Ren Ong, Jan C Oosterwijk, Ana Osorio, Laura Papi, Sue Kyung Park, Inge Sokilde Pedersen, Bernard Peissel, Pedro Perez Segura, Paolo Peterlongo, Catherine M Phelan, Paolo Radice, Johanna Rantala, Christine Rappaport-Fuerhauser, Gad Rennert, Andrea Richardson, Mark Robson, Gustavo C Rodriguez, Matti A Rookus, Rita Katharina Schmutzler, Nicolas Sevenet, Payal D Shah, Christian F Singer, Thomas P Slavin, Katie Snape, Johanna Sokolowska, Ida Marie Heeholm Sønderstrup, Melissa Southey, Amanda B Spurdle, Zsofia Stadler, Dominique Stoppa-Lyonnet, Grzegorz Sukiennicki, Christian Sutter, Yen Tan, Muy-Kheng Tea, Manuel R Teixeira, Alex Teulé, Soo-Hwang Teo, Mary Beth Terry, Mads Thomassen, Laima Tihomirova, Marc Tischkowitz, Silvia Tognazzo, Amanda Ewart Toland, Nadine Tung, Ans M W van den Ouweland, Rob B van der Luijt, Klaartje van Engelen, Elizabeth J van Rensburg, Raymonda Varon-Mateeva, Barbara Wappenschmidt, Juul T Wijnen, Timothy Rebbeck, Georgia Chenevix-Trench, Kenneth Offit, Fergus J Couch, Silje Nord, Douglas F Easton, Antonis C Antoniou, Jacques Simard
PURPOSE: Cis-acting regulatory SNPs resulting in differential allelic expression (DAE) may, in part, explain the underlying phenotypic variation associated with many complex diseases. To investigate whether common variants associated with DAE were involved in breast cancer susceptibility among BRCA1 and BRCA2 mutation carriers, a list of 175 genes was developed based of their involvement in cancer-related pathways. METHODS: Using data from a genome-wide map of SNPs associated with allelic expression, we assessed the association of ~320 SNPs located in the vicinity of these genes with breast and ovarian cancer risks in 15,252 BRCA1 and 8211 BRCA2 mutation carriers ascertained from 54 studies participating in the Consortium of Investigators of Modifiers of BRCA1/2...
January 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27748876/exon-10-skipping-in-acat1-caused-by-a-novel-c-949g-a-mutation-located-at-an-exonic-splice-enhancer-site
#14
Hiroki Otsuka, Hideo Sasai, Mina Nakama, Yuka Aoyama, Elsayed Abdelkreem, Hidenori Ohnishi, Vassiliki Konstantopoulou, Jörn Oliver Sass, Toshiyuki Fukao
Beta-ketothiolase deficiency, also known as mitochondrial acetoacetyl-CoA thiolase (T2) deficiency, is an autosomal recessive disease caused by mutations in the acetyl‑CoA acetyltransferase 1 (ACAT1) gene. A German T2‑deficient patient that developed a severe ketoacidotic episode at the age of 11 months, was revealed to be a compound heterozygote of a previously reported null mutation, c.472A>G (p.N158D) and a novel mutation, c.949G>A (p.D317N), in ACAT1. The c.949G>A mutation was suspected to cause aberrant splicing as it is located within an exonic splicing enhancer sequence (c...
November 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27695485/effects-of-porphyromonas-gingivalis-lipopolysaccharide-on-the-expression-of-key-genes-involved-in-cholesterol-metabolism-in-macrophages
#15
Fen Liu, Yi Wang, Jing Xu, Fangqiang Liu, Rongdang Hu, Hui Deng
INTRODUCTION: Cardiovascular diseases are positively correlated with periodontal disease. However, the molecular mechanisms linking atherosclerosis and periodontal infection are not clear. This study aimed to determine whether Porphyromonas gingivalis lipopolysaccharide (Pg-LPS) altered the expression of genes regulating cholesterol metabolism in macrophages in the presence of low-density lipoprotein (LDL). MATERIAL AND METHODS: THP-1-derived macrophages were exposed to different concentrations (0...
October 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27678191/mir-467b-regulates-the-cholesterol-ester-formation-via-targeting-acat1-gene-in-raw-264-7-macrophages
#16
Bo Wang, Ping-Ping He, Gao-Feng Zeng, Tao Zhang, Xin-Ping Ou Yang
Previous studies have shown that miR-467b plays a central role in the progression of atherosclerosis via regulating LPL expression. However, the regulatory mechanism of miR-467b in regulateing the CE and FC formation is still unclear. Interestingly, computational analysis demonstrated that ACAT1 which converts intracellular FC into the storage form of CE, and ABCA1 which promotes cellular FC efflux may be target gene of miR-467b. Here, we examined whether miR-467b could target ACAT1 and ABCA1, thereby affecting the CE and FC formation in oxLDL-treatment RAW 264...
January 2017: Biochimie
https://www.readbyqxmd.com/read/27648945/downregulation-of-mir-150-expression-by-dna-hypermethylation-is-associated-with-high-2-hydroxy-4-methylthio-butanoic-acid-induced-hepatic-cholesterol-accumulation-in-nursery-piglets
#17
Yimin Jia, Mingfa Ling, Luchu Zhang, Shuxia Jiang, Yusheng Sha, Ruqian Zhao
Excess 2-hydroxy-(4-methylthio)butanoic acid (HMB) supplementation induces hyperhomocysteinemia, which contributes to hepatic cholesterol accumulation. However, it is unclear whether and how high levels of HMB break hepatic cholesterol homeostasis in nursery piglets. In this study, HMB oversupplementation suppressed food intake and decreased body weight in nursery piglets. Hyperhomocysteinemia and higher hepatic cholesterol accumulation were observed in HMB groups. Accordingly, HMB significantly increased the protein content of 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) and glycine N-methyltransferase (GNMT) but decreased that of acyl-coenzyme A:cholesterol acyltransferase-1 (ACAT1)...
October 12, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27647838/esterification-of-24s-ohc-induces-formation-of-atypical-lipid-droplet-like-structures-leading-to-neuronal-cell-death
#18
Wakako Takabe, Yasuomi Urano, Diep-Khanh Ho Vo, Kimiyuki Shibuya, Masaki Tanno, Hiroaki Kitagishi, Toyoshi Fujimoto, Noriko Noguchi
The 24(S)-hydroxycholesterol (24S-OHC), which plays an important role in maintaining brain cholesterol homeostasis, has been shown to possess neurotoxicity. We have previously reported that 24S-OHC esterification by ACAT1 and the resulting lipid droplet (LD) formation are responsible for 24S-OHC-induced cell death. In the present study, we investigate the functional roles of 24S-OHC esters and LD formation in 24S-OHC-induced cell death, and we identify four long-chain unsaturated fatty acids (oleic acid, linoleic acid, arachidonic acid, and DHA) with which 24S-OHC is esterified in human neuroblastoma SH-SY5Y cells treated with 24S-OHC...
November 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27644038/advanced-glycation-end-products-increase-lipids-accumulation-in-macrophages-through-upregulation-of-receptor-of-advanced-glycation-end-products-increasing-uptake-esterification-and-decreasing-efflux-of-cholesterol
#19
Lei Xu, Yi-Ru Wang, Pei-Cheng Li, Bo Feng
BACKGROUND: Previous reports have suggested that advanced glycation end products (AGEs) participate in the pathogenesis of diabetic macroangiopathy. Our previous study have found that AGEs can increase the lipid droplets accumulation in aortas of diabetic rats, but the current understanding of the mechanisms remains incomplete by which AGEs affect lipids accumulation in macrophages and accelerate atherosclerosis. In this study, we investigated the role of AGEs on lipids accumulation in macrophages and the possible molecular mechanisms including cholesterol influx, esterification and efflux of macrophages...
September 19, 2016: Lipids in Health and Disease
https://www.readbyqxmd.com/read/27611366/ruminal-expression-of-the-nqo1-rgs5-and-acat1-genes-may-be-indicators-of-feed-efficiency-in-beef-steers
#20
R J Kern, C M Zarek, A K Lindholm-Perry, L A Kuehn, W M Snelling, H C Freetly, H C Cunningham, A M Meyer
Ruminal genes differentially expressed in crossbred beef steers from USMARC with variation in gain and feed intake were identified in a previous study. Several of the genes identified with expression patterns differing between animals with high gain-low feed intake and low gain-high feed intake were evaluated in a separate, unrelated population of Angus × Hereford beef steers from the University of Wyoming that was classified to differ in residual feed intake (RFI). Of the 17 genes tested, two were differentially expressed by RFI class in the Angus × Hereford animals...
February 2017: Animal Genetics
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