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https://www.readbyqxmd.com/read/28611053/the-rs7903146-variant-in-the-tcf7l2-gene-increases-the-risk-of-prediabetes-type-2-diabetes-in-obese-adolescents-by-impairing-%C3%AE-cell-function-and-hepatic-insulin-sensitivity
#1
Catrina Cropano, Nicola Santoro, Leif Groop, Chiara Dalla Mann, Claudio Cobelli, Alfonso Galderisi, Romy Kursawe, Bridget Pierpont, Martina Goffredo, Sonia Caprio
OBJECTIVE: In this study, we aimed to explore the mechanism by which TCF7L2 rs7903146 risk allele confers susceptibility to impaired glucose tolerance (IGT) or type 2 diabetes (T2D) in obese adolescents. RESEARCH DESIGN AND METHODS: The rs7903146 variant in the TCF7L2 gene was genotyped in a multiethnic cohort of 955 youths. All subjects underwent an oral glucose tolerance test with the use of the Oral Minimal Model to assess insulin secretion, and 33 subjects underwent a hyperinsulinemic-euglycemic clamp...
June 13, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28607931/genetic-epidemiology-of-type-2-diabetes-in-mexican-mestizos
#2
REVIEW
Eiralí Guadalupe García-Chapa, Evelia Leal-Ugarte, Valeria Peralta-Leal, Jorge Durán-González, Juan Pablo Meza-Espinoza
There are currently about 415 million people with diabetes worldwide, a figure likely to increase to 642 million by 2040. In 2015, Mexico was the second Latin American country and sixth in the world in prevalence of this disorder with nearly 11.5 million of patients. Type 2 diabetes (T2D) is the main kind of diabetes and its etiology is complex with environmental and genetic factors involved. Indeed, polymorphisms in several genes have been associated with this disease worldwide. To estimate the genetic epidemiology of T2D in Mexican mestizos a systematic bibliographic search of published articles through PubMed, Scopus, Google Scholar, and Web of Science was conducted...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28595632/a-comparison-of-gene-expression-profiles-in-patients-with-coronary-artery-disease-type-2-diabetes-and-their-coexisting-conditions
#3
Rui Gong, Menghui Chen, Cuizhao Zhang, Manli Chen, Haibin Li
BACKGROUND: To support a hypothesis that there is an intrinsic interplay between coronary artery disease (CAD) and type 2 diabetes (T2D), we used RNA-seq to identify unique gene expression signatures of CAD, T2D, and coexisting conditions. METHODS: After transcriptome sequencing, differential expression analysis was performed between each disordered state and normal control group. By comparing gene expression profiles of CAD, T2D, and coexisting conditions, common and specific patterns of each disordered state were displayed...
June 8, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28594147/casein-kinase-1-epsilon-deletion-increases-mu-opioid-receptor-dependent-behaviors-and-binge-eating
#4
Lisa R Goldberg, Stacey L Kirkpatrick, Neema Yazdani, Kimberly P Luttik, Olga A Lacki, R Keith Babbs, David F Jenkins, W Evan Johnson, Camron D Bryant
Genetic and pharmacological studies indicate that casein kinase-1 epsilon (Csnk1e) contributes to psychostimulant, opioid, and ethanol motivated behaviors. We previously used pharmacological inhibition to demonstrate that Csnk1e negatively regulates the locomotor stimulant properties of opioids and psychostimulants. Here, we tested the hypothesis that Csnk1e negatively regulates opioid and psychostimulant reward using genetic inhibition and the conditioned place preference assay in Csnk1e knockout mice. Similar to pharmacological inhibition, Csnk1e knockout mice showed enhanced opioid-induced locomotor activity with the mu opioid receptor agonist fentanyl (0...
June 8, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/28592605/interaction-between-genes-and-macronutrient-intake-on-the-risk-of-developing-type-2-diabetes-systematic-review-and-findings-from-european-prospective-investigation-into-cancer-epic-interact
#5
Sherly X Li, Fumiaki Imamura, Zheng Ye, Matthias B Schulze, Jusheng Zheng, Eva Ardanaz, Larraitz Arriola, Heiner Boeing, Courtney Dow, Guy Fagherazzi, Paul W Franks, Antonio Agudo, Sara Grioni, Rudolf Kaaks, Verena A Katzke, Timothy J Key, Kay Tee Khaw, Francesca R Mancini, Carmen Navarro, Peter M Nilsson, N Charlotte Onland-Moret, Kim Overvad, Domenico Palli, Salvatore Panico, J Ramón Quirós, Olov Rolandsson, Carlotta Sacerdote, María-José Sánchez, Nadia Slimani, Ivonne Sluijs, Annemieke Mw Spijkerman, Anne Tjonneland, Rosario Tumino, Stephen J Sharp, Elio Riboli, Claudia Langenberg, Robert A Scott, Nita G Forouhi, Nicholas J Wareham
Background: Gene-diet interactions have been reported to contribute to the development of type 2 diabetes (T2D). However, to our knowledge, few examples have been consistently replicated to date.Objective: We aimed to identify existing evidence for gene-macronutrient interactions and T2D and to examine the reported interactions in a large-scale study.Design: We systematically reviewed studies reporting gene-macronutrient interactions and T2D. We searched the MEDLINE, Human Genome Epidemiology Network, and WHO International Clinical Trials Registry Platform electronic databases to identify studies published up to October 2015...
June 7, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28587604/kcnj11-abcc8-and-tcf7l2-polymorphisms-and-the-response-to-sulfonylurea-treatment-in-patients-with-type-2-diabetes-a-bioinformatics-assessment
#6
Jingwen Song, Yunzhong Yang, Franck Mauvais-Jarvis, Yu-Ping Wang, Tianhua Niu
BACKGROUND: Type 2 diabetes (T2D) is a worldwide epidemic with considerable health and economic consequences. Sulfonylureas are widely used drugs for the treatment of patients with T2D. KCNJ11 and ABCC8 encode the Kir6.2 (pore-forming subunit) and SUR1 (regulatory subunit that binds to sulfonylurea) of pancreatic β cell KATP channel respectively with a critical role in insulin secretion and glucose homeostasis. TCF7L2 encodes a transcription factor expressed in pancreatic β cells that regulates insulin production and processing...
June 6, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28584296/transcriptome-analysis-in-blood-cells-from-children-reveals-potential-early-biomarkers-of-metabolic-alterations
#7
J Sánchez, C Picó, W Ahrens, R Foraita, A Fraterman, L A Moreno, P Russo, A Siani, A Palou
OBJECTIVES: The development of effective strategies to prevent childhood obesity and its comorbidities requires new, reliable early biomarkers. Here, we aimed to identify in peripheral blood cells (PBCs) potential transcript-based biomarkers of unhealthy metabolic profile associated to overweight/obesity in children. METHODS: We performed a whole-genome microarray analysis in blood cells to identify genes differentially expressed between overweight and normal weight children to obtain novel transcript-based biomarkers predictive of metabolic complications...
June 6, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28577307/disrupting-interactions-between-%C3%AE-catenin-and-activating-tcfs-reconstitutes-ground-state-pluripotency-in-mouse-embryonic-stem-cells
#8
Abil Saj, Sujash S Chatterjee, Bowen Zhu, Engin Cukuroglu, Tenzin Gocha, Xiaoqian Zhang, Jonathan Göke, Ramanuj DasGupta
The 2i-media, composed of two small molecule inhibitors (PD0325901 and CHIR99021) against MEK and GSK3-kinases, respectively, is known to establish naïve ground state pluripotency in mouse embryonic stem cells (mESCs). These inhibitors block MEK-mediated differentiation, while driving β-catenin dependent de-repression of pluripotency promoting targets. However, accumulating evidence suggest that β-catenin's association with activating TCFs (TCF7 and TCF7L2) can induce expression of several lineage-specific prodifferentiation genes...
June 2, 2017: Stem Cells
https://www.readbyqxmd.com/read/28511671/erratum-to-investigation-of-the-association-between-the-tcf7l2-rs7903146-c-t-gene-polymorphism-and-obesity-in-a-cameroonian-population-a-pilot-study
#9
Aurelie Nguimmo-Metsadjio, Barbara Atogho-Tiedeu, Jean Jacques Noubiap, Marie-Solange Evehe, Rosine Djokam-Dadjeu, Olivier Sontsa Donfack, Dieudonne Nanfa, Edith Pascale M Mato, Elvis Ndonwi Ngwa, Magellan Guewo-Fokeng, Priscille Pokam-Fosso, Wilfred F Mbacham, Jean Claude Mbanya, Eugene Sobngwi
No abstract text is available yet for this article.
May 16, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28499350/transcription-factor-associated-combinatorial-epigenetic-pattern-reveals-higher-transcriptional-activity-of-tcf7l2-regulated-intragenic-enhancers
#10
Qi Liu, Russell Bonneville, Tianbao Li, Victor X Jin
BACKGROUND: Recent studies have suggested that combinations of multiple epigenetic modifications are essential for controlling gene expression. Despite numerous computational approaches have been developed to decipher the combinatorial epigenetic patterns or "epigenetic code", none of them has explicitly addressed the relationship between a specific transcription factor (TF) and the patterns. METHODS: Here, we developed a novel computational method, T-cep, for annotating chromatin states associated with a specific TF...
May 12, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28482944/increased-birth-weight-is-associated-with-altered-gene-expression-in-neonatal-foreskin
#11
L J Reynolds, R I Pollack, R J Charnigo, C S Rashid, A J Stromberg, S Shen, J M O'Brien, K J Pearson
Elevated birth weight is linked to glucose intolerance and obesity health-related complications later in life. No studies have examined if infant birth weight is associated with gene expression markers of obesity and inflammation in a tissue that comes directly from the infant following birth. We evaluated the association between birth weight and gene expression on fetal programming of obesity. Foreskin samples were collected following circumcision, and gene expression analyzed comparing the 15% greatest birth weight infants (n=7) v...
May 9, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28472810/the-long-non-coding-rna-crnde-promotes-colorectal-carcinoma-progression-by-competitively-binding-mir-217-with-tcf7l2-and-enhancing-the-wnt-%C3%AE-catenin-signaling-pathway
#12
Bo Yu, Xuan Ye, Qiong Du, Bin Zhu, Qing Zhai, Xin-Xiang Li
BACKGROUND/AIMS: The long non-coding RNA colorectal neoplasia differentially expressed (CRNDE) contributes to the proliferation and migration of tumors. However, its molecular mechanism underlying gastric cancer remains unknown. In the present study, we investigated whether CRNDE was involved in the development of colorectal cancer via the binding of microRNA (miR)-217 with transcription factor 7-like 2 (TCF7L2) to enhance the Wnt signaling pathway. METHODS: Quantitative polymerase chain reaction was used to detect CRNDE, miR-217 and TCF7L2 in colorectal cancer tissues and cells...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28467300/tcf7l1-promotes-skin-tumorigenesis-independently-of-%C3%AE-catenin-through-induction-of-lcn2
#13
Amy T Ku, Timothy M Shaver, Ajay S Rao, Jeffrey M Howard, Christine N Rodriguez, Qi Miao, Gloria Garcia, Diep Le, Diane Yang, Malgorzata Borowiak, Daniel N Cohen, Vida Chitsazzadeh, Abdul H Diwan, Kenneth Y Tsai, Hoang Nguyen
The transcription factor TCF7L1 is an embryonic stem cell signature gene that is upregulated in multiple aggressive cancer types, but its role in skin tumorigenesis has not yet been defined. Here we document TCF7L1 upregulation in skin squamous cell carcinoma (SCC) and demonstrate that TCF7L1 overexpression increases tumor incidence, tumor multiplicity, and malignant progression in the chemically induced mouse model of skin SCC. Additionally, we show that downregulation of TCF7L1 and its paralogue TCF7L2 reduces tumor growth in a xenograft model of human skin SCC...
May 3, 2017: ELife
https://www.readbyqxmd.com/read/28465699/transcription-factor-7-like-2-polymorphism-and-context-specific-risk-of-metabolic-syndrome-type-2-diabetes-and-dyslipidemia
#14
Abbasali Palizban, Mahnaz Rezaei, Hossein Khanahmad, Mohammad Fazilati
BACKGROUND: The transcription factor 7-like 2 gene (TCF7L2) is an element of the Wnt signaling pathway. There is lack of evidence if TCF7L2 has a functional role in lipid metabolism and regulation of the components constitutes the metabolic syndrome (MetSyn). The aims of this study were to evaluate whether the risk allele of TCF7L2 gene polymorphism is associated with dyslipidemia and MetSyn. MATERIALS AND METHODS: The MetSyn subjects were participated only based on the National Cholesterol Education Program - Third Adult Treatment Panel criteria...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28464262/a-tale-of-agriculturalists-and-hunter-gatherers-exploring-the-thrifty-genotype-hypothesis-in-native-south-americans
#15
Guillermo Reales, Diego L Rovaris, Vanessa C Jacovas, Tábita Hünemeier, José R Sandoval, Alcibiades Salazar-Granara, Darío A Demarchi, Eduardo Tarazona-Santos, Aline B Felkl, Michele A Serafini, Francisco M Salzano, Rafael Bisso-Machado, David Comas, Vanessa R Paixão-Côrtes, Maria Cátira Bortolini
OBJECTIVES: To determine genetic differences between agriculturalist and hunter-gatherer southern Native American populations for selected metabolism-related markers and to test whether Neel's thrifty genotype hypothesis (TGH) could explain the genetic patterns observed in these populations. MATERIALS AND METHODS: 375 Native South American individuals from 17 populations were genotyped using six markers (APOE rs429358 and rs7412; APOA2 rs5082; CD36 rs3211883; TCF7L2 rs11196205; and IGF2BP2 rs11705701)...
May 2, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28450117/tcf7l1-recruits-ctbp-and-hdac1-to-repress-dickkopf4-gene-expression-in-human-colorectal-cancer-cells
#16
Melanie A Eshelman, Meera Shah, Wesley M Raup-Konsavage, Sherri A Rennoll, Gregory S Yochum
The T-cell factor/Lymphoid enhancer factor (TCF/LEF; hereafter TCF) family of transcription factors are critical regulators of colorectal cancer (CRC) cell growth. Of the four TCF family members, TCF7L1 functions predominantly as a repressor of gene expression. Few studies have addressed the role of TCF7L1 in CRC and only a handful of target genes regulated by this repressor are known. By silencing TCF7L1 expression in HCT116 cells, we show that it promotes cell proliferation and tumorigenesis in vivo by driving cell cycle progression...
April 25, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28438156/relative-contribution-of-type-1-and-type-2-diabetes-loci-to-the-genetic-etiology-of-adult-onset-non-insulin-requiring-autoimmune-diabetes
#17
Rajashree Mishra, Alessandra Chesi, Diana L Cousminer, Mohammad I Hawa, Jonathan P Bradfield, Kenyaita M Hodge, Vanessa C Guy, Hakon Hakonarson, Didac Mauricio, Nanette C Schloot, Knud B Yderstræde, Benjamin F Voight, Stanley Schwartz, Bernhard O Boehm, Richard David Leslie, Struan F A Grant
BACKGROUND: In adulthood, autoimmune diabetes can present as non-insulin-requiring diabetes, termed as 'latent autoimmune diabetes in adults' (LADA). In this study, we investigated established type 1 diabetes (T1D) and type 2 diabetes (T2D) genetic loci in a large cohort of LADA cases to assess where LADA is situated relative to these two well-characterized, classic forms of diabetes. METHODS: We tested the association of T1D and T2D GWAS-implicated loci in 978 LADA cases and 1057 non-diabetic controls of European ancestry using a linear mixed model...
April 25, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28430825/discovery-and-fine-mapping-of-adiposity-loci-using-high-density-imputation-of-genome-wide-association-studies-in-individuals-of-african-ancestry-african-ancestry-anthropometry-genetics-consortium
#18
Maggie C Y Ng, Mariaelisa Graff, Yingchang Lu, Anne E Justice, Poorva Mudgal, Ching-Ti Liu, Kristin Young, Lisa R Yanek, Mary F Feitosa, Mary K Wojczynski, Kristin Rand, Jennifer A Brody, Brian E Cade, Latchezar Dimitrov, Qing Duan, Xiuqing Guo, Leslie A Lange, Michael A Nalls, Hayrettin Okut, Salman M Tajuddin, Bamidele O Tayo, Sailaja Vedantam, Jonathan P Bradfield, Guanjie Chen, Wei-Min Chen, Alessandra Chesi, Marguerite R Irvin, Badri Padhukasahasram, Jennifer A Smith, Wei Zheng, Matthew A Allison, Christine B Ambrosone, Elisa V Bandera, Traci M Bartz, Sonja I Berndt, Leslie Bernstein, William J Blot, Erwin P Bottinger, John Carpten, Stephen J Chanock, Yii-Der Ida Chen, David V Conti, Richard S Cooper, Myriam Fornage, Barry I Freedman, Melissa Garcia, Phyllis J Goodman, Yu-Han H Hsu, Jennifer Hu, Chad D Huff, Sue A Ingles, Esther M John, Rick Kittles, Eric Klein, Jin Li, Barbara McKnight, Uma Nayak, Barbara Nemesure, Adesola Ogunniyi, Andrew Olshan, Michael F Press, Rebecca Rohde, Benjamin A Rybicki, Babatunde Salako, Maureen Sanderson, Yaming Shao, David S Siscovick, Janet L Stanford, Victoria L Stevens, Alex Stram, Sara S Strom, Dhananjay Vaidya, John S Witte, Jie Yao, Xiaofeng Zhu, Regina G Ziegler, Alan B Zonderman, Adebowale Adeyemo, Stefan Ambs, Mary Cushman, Jessica D Faul, Hakon Hakonarson, Albert M Levin, Katherine L Nathanson, Erin B Ware, David R Weir, Wei Zhao, Degui Zhi, Donna K Arnett, Struan F A Grant, Sharon L R Kardia, Olufunmilayo I Oloapde, D C Rao, Charles N Rotimi, Michele M Sale, L Keoki Williams, Babette S Zemel, Diane M Becker, Ingrid B Borecki, Michele K Evans, Tamara B Harris, Joel N Hirschhorn, Yun Li, Sanjay R Patel, Bruce M Psaty, Jerome I Rotter, James G Wilson, Donald W Bowden, L Adrienne Cupples, Christopher A Haiman, Ruth J F Loos, Kari E North
Genome-wide association studies (GWAS) have identified >300 loci associated with measures of adiposity including body mass index (BMI) and waist-to-hip ratio (adjusted for BMI, WHRadjBMI), but few have been identified through screening of the African ancestry genomes. We performed large scale meta-analyses and replications in up to 52,895 individuals for BMI and up to 23,095 individuals for WHRadjBMI from the African Ancestry Anthropometry Genetics Consortium (AAAGC) using 1000 Genomes phase 1 imputed GWAS to improve coverage of both common and low frequency variants in the low linkage disequilibrium African ancestry genomes...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28420445/investigation-of-the-association-between-the-tcf7l2-rs7903146-c-t-gene-polymorphism-and-obesity-in-a-cameroonian-population-a-pilot-study
#19
Aurelie Nguimmo-Metsadjio, Barbara Atogho-Tiedeu, Jean Jacques Noubiap, Marie-Solange Evehe, Rosine Djokam-Dadjeu, Olivier Sontsa Donfack, Dieudonne Nanfa, Edith Pascale M Mato, Elvis Ndonwi Ngwa, Magellan Guewo-Fokeng, Priscille Pokam-Fosso, Wilfred F Mbacham, Jean Claude Mbanya, Eugene Sobngwi
OBJECTIVE: This study aimed at investigating the association between the rs7903146 (C/T) polymorphism of the TCF7L2 gene with obesity in a Cameroonian population. METHOD: This was a case-control pilot study including 61 obese and 61 non-obese Cameroonian adults. Anthropometric indices of obesity, blood pressure, fasting blood glucose, and blood lipids were measured. The rs7903146 (C/T) polymorphism of the TCF7L2 gene was genotyped using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), and genotypes were correlated with clinical and biological parameters...
April 18, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28404897/tcf7l2-polymorphisms-and-the-risk-of-schizophrenia-in-the-chinese-han-population
#20
Lijun Liu, Jingjie Li, Mengdan Yan, Jing Li, Junyu Chen, Yi Zhang, Xikai Zhu, Li Wang, Longli Kang, Dongya Yuan, Tianbo Jin
Single nucleotide polymorphisms (SNPs) in TCF7L2 (Transcription Factor 7-Like 2) reportedly affect susceptibility to schizophrenia (SCZ). We examined the association between TCF7L2 polymorphisms and SCZ susceptibility in a Chinese Han population. Six SNPs were genotyped in 499 SCZ patients and 500 healthy individuals, after which their associations with SCZ were evaluated using the Chi-squared test and genetic model analyses. We observed that the allele A of rs12573128 is associated with an increased SCZ risk (odds ratio [OR] = 1...
April 25, 2017: Oncotarget
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