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https://www.readbyqxmd.com/read/27885961/insig2-polymorphism-and-weight-gain-dyslipidemia-and-serum-adiponectin-in-finnish-patients-with-schizophrenia-treated-with-clozapine
#1
Suvi Koskinen, Olli Kampman, Anssi Solismaa, Leo-Pekka Lyytikäinen, Niko Seppälä, Merja Viikki, Mari Hämäläinen, Eeva Moilanen, Nina Mononen, Terho Lehtimäki, Esa Leinonen
AIM: To investigate INSIG2's association with obesity, weight change and serum lipid profile during clozapine treatment. MATERIALS & METHODS: Subjects with schizophrenia (n = 190) were genotyped, identifying seven SNPs. Genetic risk scores (GRSs) were calculated to adiponectin, high-density lipoprotein cholesterol, triglycerides and weight gain. RESULTS: In the model for weight gain, SNPs rs12151787, rs17047733 and rs10490626 were selected...
November 25, 2016: Pharmacogenomics
https://www.readbyqxmd.com/read/27723468/soy-isoflavones-glycine-max-ameliorates-hypertriglyceridemia-and-hepatic-steatosis-in-high-fat-fed-ovariectomized-wistar-rats-an-experimental-model-of-postmenopausal-obesity
#2
Sankar Panneerselvam, Rajaa Muthu Packirisamy, Zachariah Bobby, Sajini Elizabeth Jacob, Magadi Gopalakrishna Sridhar
Obesity emerged as the major risk factor for metabolic syndrome. Postmenopausal women are more prone to develop obesity than premenopausal women. The absence of safe and effective conventional treatments for postmenopausal obesity has changed the focus to natural products as alternative remedy. We investigated the molecular basis of the effect of soy isoflavones (SIFs) on hypertriglyceridemia and hepatic steatosis in an animal model of postmenopausal obesity. Ovariectomized (OVX) and sham-operated Wistar rats were fed with high-fat diet (HFD) and normal diet for 8 weeks with and without SIF extract (150mg/kg body weight/day)...
September 8, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/27687066/four-novel-polymorphisms-of-buffalo-insig2-gene-are-associated-with-milk-production-traits-in-chinese-buffaloes
#3
Tingxian Deng, Chunying Pang, Xiaoya Ma, Xingrong Lu, Anqin Duan, Peng Zhu, Xianwei Liang
Insulin-induced genes (INSIGs), including INSIG1 and INSIG2, are important mediators that play a pivotal role in the lipid metabolism and could cause the retention of the SCAP/SREBP complex. Therefore, the objective of this study is to detect the single nucleotide polymorphisms (SNPs) of buffalo INSIG2 gene and evaluate their associations with milk production traits in Chinese buffaloes. A total of four SNPs (g.621272A > G, g.621364A > C, g.632543G > A, and g.632684C > T) were identified using DNA pooled sequencing, and the SNP genotyping for the identified SNPs was performed by using Matrix-assisted laser desorption/ionization time of flight mass spectrometry method from 264 individuals...
September 27, 2016: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/27568546/setdb2-links-glucocorticoid-to-lipid-metabolism-through-insig2a-regulation
#4
Manuel Roqueta-Rivera, Ryan M Esquejo, Peter E Phelan, Katalin Sandor, Bence Daniel, Fabienne Foufelle, Jun Ding, Xiaoman Li, Sepideh Khorasanizadeh, Timothy F Osborne
Transcriptional and chromatin regulations mediate the liver response to nutrient availability. The role of chromatin factors involved in hormonal regulation in response to fasting is not fully understood. We have identified SETDB2, a glucocorticoid-induced putative epigenetic modifier, as a positive regulator of GR-mediated gene activation in liver. Insig2a increases during fasting to limit lipid synthesis, but the mechanism of induction is unknown. We show Insig2a induction is GR-SETDB2 dependent. SETDB2 facilitates GR chromatin enrichment and is key to glucocorticoid-dependent enhancer-promoter interactions...
September 13, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/27217270/pharmacogenetic-associations-of-antipsychotic-drug-related-weight-gain-a-systematic-review-and-meta-analysis
#5
Jian-Ping Zhang, Todd Lencz, Ryan X Zhang, Masahiro Nitta, Lawrence Maayan, Majnu John, Delbert G Robinson, W Wolfgang Fleischhacker, Rene S Kahn, Roel A Ophoff, John M Kane, Anil K Malhotra, Christoph U Correll
Although weight gain is a serious but variable adverse effect of antipsychotics that has genetic underpinnings, a comprehensive meta-analysis of pharmacogenetics of antipsychotic-related weight gain is missing. In this review, random effects meta-analyses were conducted for dominant and recessive models on associations of specific single nucleotide polymorphisms (SNP) with prospectively assessed antipsychotic-related weight or body mass index (BMI) changes (primary outcome), or categorical increases in weight or BMI (≥7%; secondary outcome)...
November 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27173213/amfr-gene-silencing-inhibits-the-differentiation-of-porcine-preadipocytes
#6
C Z Chen, Y N Zhu, M L Chai, L S Dai, Y Gao, H Jiang, L J Zhang, Y Ding, S Y Liu, Q Y Li, W F Lu, J B Zhang
Our study clarifies the role of the autocrine motility factor receptor (AMFR) gene in porcine preadipocyte differentiation. AMFR-siRNA was transfected into porcine preadipocytes and the preadipocytes were induced to differentiation. Subsequently, qRT-PCR was conducted to examine changes in mRNA expression of a series of genes in porcine preadipocytes, including AMFR, sterol-regulatory element-binding protein-1a (SREBP1a), SREBP2, insulin-induced gene 1 (Insig1), and Insig2. Expression changes in the mRNA of genes regulating adipocyte differentiation were also analyzed using qRT-PCR, including peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer-binding protein alpha (C/EBPα), and Kruppel-like factor 2 (KLF2)...
2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/26965892/pig-fatness-in-relation-to-fasn-and-insig2-genes-polymorphism-and-their-transcript-level
#7
Maria Grzes, Slawomir Sadkowski, Katarzyna Rzewuska, Maciej Szydlowski, Marek Switonski
Fat content and fatty acid (FA) profile influence meat quality in pigs. These parameters are important for consumers due to their preferences for healthy, high quality meat. The aim of this study was searching for polymorphisms and transcript levels of two positional and functional candidate genes, FASN and INSIG2, encoding proteins which take part in lipid metabolism. The molecular findings were analyzed in relation to fatness traits. Pigs of four commercial breeds were included: Polish Landrace (PL), Polish Large White (PLW), Duroc and Pietrain...
May 2016: Molecular Biology Reports
https://www.readbyqxmd.com/read/26914024/white-pitaya-hylocereus-undatus-juice-attenuates-insulin-resistance-and-hepatic-steatosis-in-diet-induced-obese-mice
#8
Haizhao Song, Zihuan Zheng, Jianan Wu, Jia Lai, Qiang Chu, Xiaodong Zheng
Insulin resistance and hepatic steatosis are the most common complications of obesity. Pitaya is an important source of phytochemicals such as polyphenols, flavonoid and vitamin C which are related to its antioxidant activity. The present study was conducted to evaluate the influence of white pitaya juice (WPJ) on obesity-related metabolic disorders (e.g. insulin resistance and hepatic steatosis) in high-fat diet-fed mice. Forty-eight male C57BL/6J mice were assigned into four groups and fed low-fat diet with free access to water or WPJ, or fed high-fat diet with free access to water or WPJ for 14 weeks...
2016: PloS One
https://www.readbyqxmd.com/read/26832365/fish-oil-alleviated-high-fat-diet-induced-non-alcoholic-fatty-liver-disease-via-regulating-hepatic-lipids-metabolism-and-metaflammation-a-transcriptomic-study
#9
Fahu Yuan, Hualin Wang, Yu Tian, Qi Li, Lei He, Na Li, Zhiguo Liu
BACKGROUND: Intake of fish oil rich in n-3 polyunsaturated fatty acids (PUFAs) is believed to be beneficial against development of non-alcoholic fatty liver disease (NAFLD). However, the underlying mechanisms remain unclear. This study was to gain further understanding of the potential mechanisms of the protective effects of fish oil against NAFLD. METHODS: Ten male Sprague-Dawley rats were fed a control diet (CON), a Western style high-fat and high-cholesterol diet (WD), or a WD diet containing fish oil (FOH) for 16 weeks respectively...
2016: Lipids in Health and Disease
https://www.readbyqxmd.com/read/26827442/-expression-of-genes-which-control-glucose-metabolism-in-blood-cells-of-the-obese-boys-with-insulin-resistance
#10
O V Tiazhka, D O Minchenko, V V Davydov, O S Moliavko, O A Budreiko, D K Kulieshova, O H Minchenko
We studied the expression of genes, which responsible for glucose metabolism, in the blood of obese boys with and without of insulin resistance as well as in normal (control) individuals. It was shown that the expression level of PFKFB3 gene is increased, PFKFB1 and INSIG2--is decreased, but HK2 gene--significantly does not change in the blood cells of obese boys with normal insulin sensitivity as compared to control group. Insulin resistance in obese boys leads to up-regulation of INSIG2 gene expression as well as to down-regulation of PFKFB1, PFKFB3, and HK2 genes in the blood...
April 2015: Likars'ka Sprava
https://www.readbyqxmd.com/read/26693219/treatment-with-ppar%C3%AE-agonist-clofibrate-inhibits-the-transcription-and-activation-of-srebps-and-reduces-triglyceride-and-cholesterol-levels-in-liver-of-broiler-chickens
#11
Lijun Zhang, Chunyan Li, Fang Wang, Shenghua Zhou, Mingjun Shangguan, Lina Xue, Bianying Zhang, Fuxiang Ding, Dequan Hui, Aihua Liang, Dongchang He
PPARα agonist clofibrate reduces cholesterol and fatty acid concentrations in rodent liver by an inhibition of SREBP-dependent gene expression. In present study we investigated the regulation mechanisms of the triglyceride- and cholesterol-lowering effect of the PPARα agonist clofibrate in broiler chickens. We observed that PPARα agonist clofibrate decreases the mRNA and protein levels of LXRα and the mRNA and both precursor and nuclear protein levels of SREBP1 and SREBP2 as well as the mRNA levels of the SREBP1 (FASN and GPAM) and SREBP2 (HMGCR and LDLR) target genes in the liver of treated broiler chickens compared to control group, whereas the mRNA level of INSIG2, which inhibits SREBP activation, was increased in the liver of treated broiler chickens compared to control group...
2015: PPAR Research
https://www.readbyqxmd.com/read/26662938/insulin-induced-gene-2-expression-correlates-with-colorectal-cancer-metastasis-and-disease-outcome
#12
Shengjie Sun, Guoqing Zhang, Qiong Sun, Zhiyong Wu, Weiwei Shi, Bo Yang, Ying Li
Colorectal cancer (CRC) is one of the most common cancers worldwide accounting for ∼9% of cancer-related deaths, 90% of which are due to metastasis resulting from resistance to chemotherapeutic agents. Hence, it is imperative to develop novel biomarkers of CRC. Insulin-induced gene 2 (INSIG2) has been previously reported to be a negative regulator of cholesterol synthesis and was recently identified as a putative-positive prognostic biomarker for colon and pancreatic cancer prognosis. Even though it has been suggested as a colon cancer biomarker and as an inhibitor of Bax-mediated apoptosis, the role of INSIG2 in CRC is elusive...
January 2016: IUBMB Life
https://www.readbyqxmd.com/read/26653843/purified-betacyanins-from-hylocereus-undatus-peel-ameliorate-obesity-and-insulin-resistance-in-high-fat-diet-fed-mice
#13
Haizhao Song, Qiang Chu, Dongdong Xu, Yang Xu, Xiaodong Zheng
Natural bioactive compounds in food have been shown to be beneficial in preventing the development of obesity, diabetes, and other metabolic diseases. Increasing evidence indicates that betacyanins possess free-radical-scavenging and antioxidant activities, suggesting their beneficial effects on metabolic disorders. The main objective of this study was to isolate and identify the betaycanins from Hylocereus undatus (white-fleshed pitaya) peel and evaluate their ability to ameliorate obesity, insulin resistance, and hepatic steatosis in high-fat-diet (HFD)-induced obese mice...
January 13, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/26438694/treatment-with-a-novel-oleic-acid-dihydroxyamphetamine-conjugation-ameliorates-non-alcoholic-fatty-liver-disease-in-obese-zucker-rats
#14
Juan M Decara, Francisco Javier Pavón, Juan Suárez, Miguel Romero-Cuevas, Elena Baixeras, Mariam Vázquez, Patricia Rivera, Ana L Gavito, Bruno Almeida, Jesús Joglar, Rafael de la Torre, Fernando Rodríguez de Fonseca, Antonia Serrano
Fatty liver disease is one of the main hepatic complications associated with obesity. To date, there are no effective treatments for this pathology apart from the use of classical fibrates. In this study, we have characterized the in vivo effects of a novel conjugation of oleic acid with an amphetamine derivative (OLHHA) in an animal model of genetic obesity. Lean and obese Zucker rats received a daily intraperitoneal administration of OLHHA (5 mg kg(-1)) for 15 days. Plasma and liver samples were collected for the biochemical and molecular biological analyses, including both immunohistochemical and histological studies...
October 1, 2015: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/26315393/regulation-of-cholesterol-homeostasis-by-hedgehog-signaling-in-osteoarthritic-cartilage
#15
Shabana Amanda Ali, Mushriq Al-Jazrawe, Henry Ma, Heather Whetstone, Raymond Poon, Sarah Farr, Mark Naples, Khosrow Adeli, Benjamin A Alman
OBJECTIVE: With no effective therapies to attenuate cartilage degeneration in osteoarthritis (OA), the result is pain and disability. Activation of hedgehog (HH) signaling causes changes related to the progression of OA, with higher levels of Gli-mediated transcriptional activation associated with increased disease severity. To elucidate the mechanism through which this occurs, this study sought to identify genes regulated by HH signaling in human OA chondrocytes. METHODS: Using human OA cartilage samples, microarray analyses were performed to detect changes in gene expression when the HH pathway was modulated...
January 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/26239543/the-effects-of-vitamin-d3-on-lipogenesis-in-the-liver-and-adipose-tissue-of-pregnant-rats
#16
Eun-Jin Kang, Jae-Eon Lee, Sung-Min An, Jae Ho Lee, Hyeog Soong Kwon, Byoung Chul Kim, Seon Jong Kim, Joo Man Kim, Dae Youn Hwang, Young-Jin Jung, Seung Yun Yang, Seung Chul Kim, Beum-Soo An
Obesity is a worldwide individual and public health issue, and contributes to the development of numerous chronic diseases. In particular, maternal obesity has harmful effects on both the mother and child during and after pregnancy. The digestion and metabolism of food are controlled by endocrine factors, including insulin, glucagon and estrogen. These hormonal factors are differentially regulated during pregnancy due to the specialized hormonal environment during this period. In the present study, we examined the effects of 1,25-dihydroxyvitamin D3 (VD3), an active hormonal form of nutritional vitamin D3, on lipid metabolism in pregnant rats...
October 2015: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/26161092/gender-specific-effect-of-102g-a-polymorphism-in-insulin-induced-gene-2-on-obesity-in-chinese-children
#17
Fang-Hong Liu, Jie-Yun Song, Yi-Ning Zhang, Jun Ma, Hai-Jun Wang
Background. Insulin induced gene 2 (INSIG2) encodes a protein that has a biological effect on regulation of adipocyte metabolism and body weight. This study aimed to investigate the association of INSIG2 gene -102G>A polymorphism with obesity related phenotypes in Chinese children and test gender-specific effects. Methods. The 2,030 independent individuals aged from 7 to 18 years, including 705 obese cases and 1,325 nonobese controls, were recruited from local schools. We measured the obesity-related phenotypes and detected the serum lipids...
2015: International Journal of Endocrinology
https://www.readbyqxmd.com/read/25607990/association-of-insig2-polymorphism-with-overweight-and-ldl-in-children
#18
Anne-Marie Kaulfers, Ranjan Deka, Lawrence Dolan, Lisa J Martin
BACKGROUND: Dyslipidemia and overweight are common issues in children. Identifying genetic markers of risk could lead to targeted interventions. A polymorphism of SNP rs7566605 near insulin-induced gene 2 (INSIG2) has been identified as a strong candidate gene for obesity, through its feedback control of lipid synthesis. OBJECTIVE: To identify polymorphisms in INSIG2 which are associated with overweight (BMI ≥ 85% for age) and dyslipidemia in children. HYPOTHESIS: The C allele of rs7566605 would be significantly associated with BMI and LDL...
2015: PloS One
https://www.readbyqxmd.com/read/25468613/isomer-specific-effects-of-conjugated-linoleic-acid-on-hdl-functionality-associated-with-reverse-cholesterol-transport
#19
COMPARATIVE STUDY
Nathalie Nicod, Robert S Parker, Elena Giordano, Virginia Maestro, Alberto Davalos, Francesco Visioli
High-density lipoproteins (HDLs) are atheroprotective because of their role in reverse cholesterol transport. The intestine is involved in this process because it synthesizes HDL, removes cholesterol from plasma and excretes it into the lumen. We investigated the role of selected dietary fatty acids on intestinal cholesterol uptake and HDL functionality. Caco-2 monolayers grown on Transwells were supplemented with either palmitic, palmitoleic, oleic, linoleic, docosahexaenoic, eicosapentaenoic, arachidonic or conjugated linoleic acids (CLAs): c9,t11-CLA; t9,t11-CLA; c10,t12-CLA...
February 2015: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/25214838/polymorphism-of-the-fto-gene-influences-body-weight-in-children-with-type-1-diabetes-without-severe-obesity
#20
Włodzimierz Luczyński, Wojciech Fendler, Anna Ramatowska, Agnieszka Szypowska, Agnieszka Szadkowska, Wojciech Młynarski, Miron Chumiecki, Przemysława Jarosz-Chobot, Joanna Chrzanowska, Anna Noczyńska, Agnieszka Brandt, Małgorzata Myśliwiec, Barbara Głowińska-Olszewska, Paweł Bernatowicz, Oksana Kowalczuk, Artur Bossowski
The objective was to compare the impact of clinical and genetic factors on body mass index (BMI) in children with type 1 diabetes (T1DM) without severe obesity. A total of 1,119 children with T1DM (aged 4-18 years) were qualified to take part in the study. All children were genotyped for variants of FTO, MC4R, INSIG2, FASN, NPC1, PTER, SIRT1, MAF, IRT1, and CD36. Results. Variants of FTO showed significant association with BMI-SDS in the T1DM group. The main factors influencing BMI-SDS in children with T1DM included female gender (P = 0...
2014: International Journal of Endocrinology
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