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https://www.readbyqxmd.com/read/28623160/basic-concepts-in-molecular-biology-related-to-genetics-and-epigenetics
#1
Dolores Corella, Jose M Ordovas
The observation that "one size does not fit all" for the prevention and treatment of cardiovascular disease, among other diseases, has driven the concept of precision medicine. The goal of precision medicine is to provide the best-targeted interventions tailored to an individual's genome. The human genome is composed of billions of sequence arrangements containing a code that controls how genes are expressed. This code depends on other nonstatic regulators that surround the DNA and constitute the epigenome...
June 13, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28521334/lifestyle-recommendations-for-the-prevention-and-management-of-metabolic-syndrome-an-international-panel-recommendation
#2
Pablo Pérez-Martínez, Dimitri P Mikhailidis, Vasilios G Athyros, Mónica Bullo, Patrick Couture, María I Covas, Lawrence de Koning, Javier Delgado-Lista, Andrés Díaz-López, Christian A Drevon, Ramón Estruch, Katherine Esposito, Montserrat Fitó, Marta Garaulet, Dario Giugliano, Antonio García-Ríos, Niki Katsiki, Genovefa Kolovou, Benoît Lamarche, Maria Ida Maiorino, Guillermo Mena-Sánchez, Araceli Muñoz-Garach, Dragana Nikolic, José M Ordovás, Francisco Pérez-Jiménez, Manfredi Rizzo, Jordi Salas-Salvadó, Helmut Schröder, Francisco J Tinahones, Rafael de la Torre, Ben van Ommen, Suzan Wopereis, Emilio Ros, José López-Miranda
The importance of metabolic syndrome (MetS) lies in its associated risk of cardiovascular disease and type 2 diabetes, as well as other harmful conditions such as nonalcoholic fatty liver disease. In this report, the available scientific evidence on the associations between lifestyle changes and MetS and its components is reviewed to derive recommendations for MetS prevention and management. Weight loss through an energy-restricted diet together with increased energy expenditure through physical activity contribute to the prevention and treatment of MetS...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28439531/genome-and-cd4-t-cell-methylome-wide-association-study-of-circulating-trimethylamine-n-oxide-in-the-genetics-of-lipid-lowering-drugs-and-diet-network-goldn
#3
Stella Aslibekyan, Marguerite R Irvin, Bertha A Hidalgo, Rodney T Perry, Elias J Jeyarajah, Erwin Garcia, Irina Shalaurova, Paul N Hopkins, Michael A Province, Hemant K Tiwari, Jose M Ordovas, Devin M Absher, Donna K Arnett
BACKGROUND: Trimethylamine-N-oxide (TMAO), an atherogenic metabolite species, has emerged as a possible new risk factor for cardiovascular disease. Animal studies have shown that circulating TMAO levels are regulated by genetic and environmental factors. However, large-scale human studies have failed to replicate the observed genetic associations, and epigenetic factors such as DNA methylation have never been examined in relation to TMAO levels. METHODS AND RESULTS: We used data from the family-based Genetics of Lipid Lowering Drugs and Diet Network (GOLDN) to investigate the heritable determinants of plasma TMAO in humans...
June 2017: Journal of Nutrition & Intermediary Metabolism
https://www.readbyqxmd.com/read/28352986/genetic-associations-with-lipoprotein-subfraction-measures-differ-by-ethnicity-in-the-multi-ethnic-study-of-atherosclerosis-mesa
#4
Zhe Wang, Ani Manichukal, David C Goff, Samia Mora, Jose M Ordovas, Nicholas M Pajewski, Wendy S Post, Jerome I Rotter, Michele M Sale, Stephanie A Santorico, David Siscovick, Michael Y Tsai, Donna K Arnett, Stephen Rich, Alexis C Frazier-Wood
A recent genome-wide association study associated 62 single nucleotide polymorphisms (SNPs) from 43 genomic loci, with fasting lipoprotein subfractions in European-Americans (EAs) at genome-wide levels of significance across three independent samples. Whether these associations are consistent across ethnicities with a non-European ancestry is unknown. We analyzed 15 lipoprotein subfraction measures, on 1677 African-Americans (AAs), 1450 Hispanic-Americans (HAs), and 775 Chinese-Americans (CHN) participating in the multi-ethnic study of atherosclerosis (MESA)...
June 2017: Human Genetics
https://www.readbyqxmd.com/read/28340351/bedside-back-to-bench-building-bridges-between-basic-and-clinical-genomic-research
#5
Teri A Manolio, Douglas M Fowler, Lea M Starita, Melissa A Haendel, Daniel G MacArthur, Leslie G Biesecker, Elizabeth Worthey, Rex L Chisholm, Eric D Green, Howard J Jacob, Howard L McLeod, Dan Roden, Laura Lyman Rodriguez, Marc S Williams, Gregory M Cooper, Nancy J Cox, Gail E Herman, Stephen Kingsmore, Cecilia Lo, Cathleen Lutz, Calum A MacRae, Robert L Nussbaum, Jose M Ordovas, Erin M Ramos, Peter N Robinson, Wendy S Rubinstein, Christine Seidman, Barbara E Stranger, Haoyi Wang, Monte Westerfield, Carol Bult
Genome sequencing has revolutionized the diagnosis of genetic diseases. Close collaborations between basic scientists and clinical genomicists are now needed to link genetic variants with disease causation. To facilitate such collaborations, we recommend prioritizing clinically relevant genes for functional studies, developing reference variant-phenotype databases, adopting phenotype description standards, and promoting data sharing.
March 23, 2017: Cell
https://www.readbyqxmd.com/read/28337931/utilizing-nutritional-genomics-to-tailor-diets-for-the-prevention-of-cardiovascular-disease-a-guide-for-upcoming-studies-and-implementations
#6
REVIEW
Dolores Corella, Oscar Coltell, George Mattingley, José V Sorlí, Jose M Ordovas
Personalized diets based on an individual's genome to optimize the success of dietary intervention and reduce genetic cardiovascular disease (CVD) risk, is one of the challenges most frequently discussed in the scientific community. Areas covered: The authors gathered literature-based evidence on nutritional genomics and CVD phenotypes, our own results and research experience to provide a critical overview of the current situation of using nutritional genomics to tailor diets for CVD prevention and to propose guidelines for future studies and implementations...
May 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28298293/discovery-and-fine-mapping-of-loci-associated-with-mufas-through-trans-ethnic-meta-analysis-in-chinese-and-european-populations
#7
Yao Hu, Toshiko Tanaka, Jingwen Zhu, Weihua Guan, Jason H Y Wu, Bruce M Psaty, Barbara McKnight, Irena B King, Qi Sun, Melissa Richard, Ani Manichaikul, Alexis C Frazier-Wood, Edmond K Kabagambe, Paul N Hopkins, Jose M Ordovas, Luigi Ferrucci, Stefania Bandinelli, Donna K Arnett, Yii-Der I Chen, Shuang Liang, David S Siscovick, Michael Y Tsai, Stephen S Rich, Myriam Fornage, Frank B Hu, Eric B Rimm, Majken K Jensen, Rozenn N Lemaitre, Dariush Mozaffarian, Lyn M Steffen, Andrew P Morris, Huaixing Li, Xu Lin
MUFAs are unsaturated FAs with one double bond and are derived from endogenous synthesis and dietary intake. Accumulating evidence has suggested that plasma and erythrocyte MUFA levels are associated with cardiometabolic disorders, including CVD, T2D, and metabolic syndrome (MS). Previous genome-wide association studies (GWASs) have identified seven loci for plasma and erythrocyte palmitoleic and oleic acid levels in populations of European origin. To identify additional MUFA-associated loci and the potential functional variant at each locus, we performed ethnic-specific GWAS meta-analyses and trans-ethnic meta-analyses in more than 15,000 participants of Chinese and European ancestry...
May 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28292532/-intravenous-iron-functional-recovery-and-delirium-in-patients-with-hip-fracture-federef-study-single-centre-randomised-placebo-controlled-and-double-blind-clinical-trial-2014-001923-53-eudract-number
#8
Rafael Bielza Galindo, Jesús Llorente Gutiérrez, José Luis Pérez González, Asunción Mora Casado, David Blanco Díaz, Javier Escalera Alonso, Adoración Morales Fernández, Cristina Molano Ortiz, Beredys Esmirla García López, Nazaret Del Amo Del Arco, Juan Pablo Barro Ordovas, Estefanía Arias Muñana, Marta Neira Álvarez, David Sanz Rosa, Jorge Fco Gómez Cerezo
INTRODUCTION: There are no previous studies evaluating the effect of intravenous iron therapy on functional and cognitive status of patients with hip fracture (HF). MATERIAL AND METHODS: A single-centre randomised, placebo-controlled, double-blind and parallel treatment, clinical trial has been designed to assess the efficacy of intravenous iron therapy during the peri-operative period in elderly patients suffering from a HF. Blinding will be ensured by the packaging of the drug infusion system...
March 11, 2017: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/28095783/genome-wide-expression-profiling-in-muscle-and-subcutaneous-fat-of-lambs-in-response-to-the-intake-of-concentrate-supplemented-with-vitamin-e
#9
Laura González-Calvo, Elda Dervishi, Margalida Joy, Pilar Sarto, Roberto Martin-Hernandez, Magdalena Serrano, Jose M Ordovás, Jorge H Calvo
BACKGROUND: The objective of this study was to acquire a broader, more comprehensive picture of the transcriptional changes in the L. Thoracis muscle (LT) and subcutaneous fat (SF) of lambs supplemented with vitamin E. Furthermore, we aimed to identify novel genes involved in the metabolism of vitamin E that might also be involved in meat quality. In the first treatment, seven lambs were fed a basal concentrate from weaning to slaughter (CON). In the second treatment, seven lambs received basal concentrate from weaning to 4...
January 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28057378/beneficial-effect-of-cetp-gene-polymorphism-in-combination-with-a-mediterranean-diet-influencing-lipid-metabolism-in-metabolic-syndrome-patients-cordioprev-study
#10
Antonio Garcia-Rios, Juan Francisco Alcala-Diaz, Francisco Gomez-Delgado, Javier Delgado-Lista, Carmen Marin, Ana Leon-Acuña, Antonio Camargo, Fernando Rodriguez-Cantalejo, Ruth Blanco-Rojo, Gracia Quintana-Navarro, Jose Maria Ordovas, Francisco Perez-Jimenez, Jose Lopez-Miranda, Pablo Perez-Martinez
The cholesteryl ester transfer protein (CETP) gene has been implicated in high-density lipoprotein (HDL-C) metabolism. However, little is known about the impact of this gene on metabolic syndrome (MetS) patients and its interaction with diet. Here, we evaluate whether the consumption of a Mediterranean diet, compared with a Low-fat diet, interacts with the rs3764261 SNP at the CETP locus to modify lipid metabolism in MetS patients. Plasma lipid concentrations and rs3764261 genotypes were determined in 424 MetS subjects participating in the CORDIOPREV clinical trial (NCT00924937)...
December 24, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27993926/oxidized-ldl-is-associated-with-metabolic-syndrome-traits-independently-of-central-obesity-and-insulin-resistance
#11
Yamilee Hurtado-Roca, Hector Bueno, Antonio Fernandez-Ortiz, Jose Maria Ordovas, Borja Ibañez, Valentin Fuster, Fernando Rodriguez-Artalejo, Martin Laclaustra
This study assesses whether oxidative stress, using oxidized LDL (ox-LDL) as a proxy, is associated with metabolic syndrome (MS), whether ox-LDL mediates the association between central obesity and MS, and whether insulin resistance mediates the association between ox-LDL and MS. We examined baseline data from 3,987 subjects without diabetes in the Progression of Early Subclinical Atherosclerosis (PESA) Study. For the second, third, and fourth ox-LDL quartiles versus the first, the odds ratios (95% CI) for MS were 0...
February 2017: Diabetes
https://www.readbyqxmd.com/read/27929407/polymorphism-of-the-transcription-factor-7-like-2-gene-tcf7l2-interacts-with-obesity-on-type-2-diabetes-in-the-predimed-study-emphasizing-the-heterogeneity-of-genetic-variants-in-type-2-diabetes-risk-prediction-time-for-obesity-specific-genetic-risk-scores
#12
RANDOMIZED CONTROLLED TRIAL
Dolores Corella, Oscar Coltell, Jose V Sorlí, Ramón Estruch, Laura Quiles, Miguel Ángel Martínez-González, Jordi Salas-Salvadó, Olga Castañer, Fernando Arós, Manuel Ortega-Calvo, Lluís Serra-Majem, Enrique Gómez-Gracia, Olga Portolés, Miquel Fiol, Javier Díez Espino, Josep Basora, Montserrat Fitó, Emilio Ros, José M Ordovás
Nutrigenetic studies analyzing gene-diet interactions of the TCF7L2-rs7903146 C > T polymorphism on type-2 diabetes (T2D) have shown controversial results. A reason contributing to this may be the additional modulation by obesity. Moreover, TCF7L2-rs7903146 is one of the most influential variants in T2D-genetic risk scores (GRS). Therefore, to increase the predictive value (PV) of GRS it is necessary to first see whether the included polymorphisms have heterogeneous effects. We comprehensively investigated gene-obesity interactions between the TCF7L2-rs7903146 C > T polymorphism on T2D (prevalence and incidence) and analyzed other T2D-polymorphisms in a sub-sample...
December 6, 2016: Nutrients
https://www.readbyqxmd.com/read/27919301/the-integration-of-epigenetics-and-genetics-in-nutrition-research-for-cvd-risk-factors
#13
Yiyi Ma, Jose M Ordovas
There is increasing evidence documenting gene-by-environment (G × E) interactions for CVD related traits. However, the underlying mechanisms are still unclear. DNA methylation may represent one of such potential mechanisms. The objective of this review paper is to summarise the current evidence supporting the interplay among DNA methylation, genetic variants, and environmental factors, specifically (1) the association between SNP and DNA methylation; (2) the role that DNA methylation plays in G × E interactions...
December 6, 2016: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/27792787/heritable-dna-methylation-in-cd4-cells-among-complex-families-displays-genetic-and-non-genetic-effects
#14
Kenneth Day, Lindsay L Waite, Arnald Alonso, Marguerite R Irvin, Degui Zhi, Krista S Thibeault, Stella Aslibekyan, Bertha Hidalgo, Ingrid B Borecki, Jose M Ordovas, Donna K Arnett, Hemant K Tiwari, Devin M Absher
DNA methylation at CpG sites is both heritable and influenced by environment, but the relative contributions of each to DNA methylation levels are unclear. We conducted a heritability analysis of CpG methylation in human CD4+ cells across 975 individuals from 163 families in the Genetics of Lipid-lowering Drugs and Diet Network (GOLDN). Based on a broad-sense heritability (H2) value threshold of 0.4, we identified 20,575 highly heritable CpGs among the 174,445 most variable autosomal CpGs (SD > 0.02). Tests for associations of heritable CpGs with genotype at 2,145,360 SNPs using 717 of 975 individuals showed that ~74% were cis-meQTLs (< 1 Mb away from the CpG), 6% of CpGs exhibited trans-meQTL associations (>1 Mb away from the CpG or located on a different chromosome), and 20% of CpGs showed no strong significant associations with genotype (based on a p-value threshold of 1e-7)...
2016: PloS One
https://www.readbyqxmd.com/read/27777315/epigenome-wide-association-study-of-triglyceride-postprandial-responses-to-a-high-fat-dietary-challenge
#15
Chao-Qiang Lai, Mary K Wojczynski, Laurence D Parnell, Bertha A Hidalgo, Marguerite Ryan Irvin, Stella Aslibekyan, Michael A Province, Devin M Absher, Donna K Arnett, José M Ordovás
Postprandial lipemia (PPL), the increased plasma TG concentration after consuming a high-fat meal, is an independent risk factor for CVD. Individual responses to a meal high in fat vary greatly, depending on genetic and lifestyle factors. However, only a few loci have been associated with TG-PPL response. Heritable epigenomic changes may be significant contributors to the unexplained inter-individual PPL variability. We conducted an epigenome-wide association study on 979 subjects with DNA methylation measured from CD4(+) T cells, who were challenged with a high-fat meal as a part of the Genetics of Lipid Lowering Drugs and Diet Network study...
December 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27729386/higher-chylomicron-remnants-and-ldl-particle-numbers-associate-with-cd36-snps-and-dna-methylation-sites-that-reduce-cd36
#16
Latisha Love-Gregory, Aldi T Kraja, Fiona Allum, Stella Aslibekyan, Åsa K Hedman, Yanan Duan, Ingrid B Borecki, Donna K Arnett, Mark I McCarthy, Panos Deloukas, Jose M Ordovas, Paul N Hopkins, Elin Grundberg, Nada A Abumrad
Cluster of differentiation 36 (CD36) variants influence fasting lipids and risk of metabolic syndrome, but their impact on postprandial lipids, an independent risk factor for cardiovascular disease, is unclear. We determined the effects of SNPs within a ∼410 kb region encompassing CD36 and its proximal and distal promoters on chylomicron (CM) remnants and LDL particles at fasting and at 3.5 and 6 h following a high-fat meal (Genetics of Lipid Lowering Drugs and Diet Network study, n = 1,117). Five promoter variants associated with CMs, four with delayed TG clearance and five with LDL particle number...
December 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27707805/telomerase-rna-component-genetic-variants-interact-with-the-mediterranean-diet-modifying-the-inflammatory-status-and-its-relationship-with-aging-cordioprev-study
#17
Francisco Gomez-Delgado, Javier Delgado-Lista, Javier Lopez-Moreno, Oriol Alberto Rangel-Zuñiga, Juan Francisco Alcala-Diaz, Ana Leon-Acuña, Andreea Corina, Elena Yubero-Serrano, Jose David Torres-Peña, Antonio Camargo, Antonio Garcia-Rios, Javier Caballero, Justo Castaño, Jose M Ordovas, Jose Lopez-Miranda, Pablo Perez-Martinez
BACKGROUND: Leukocyte telomere length (LTL) attrition has been associated with age-related diseases. Telomerase RNA Component (TERC) genetic variants have been associated with LTL; whereas fatty acids (FAs) can interact with genetic factors and influence in aging. We explore whether variability at the TERC gene locus interacts with FA profile and two healthy diets (low-fat diet vs Mediterranean diet [MedDiet]) modulating LTL, glucose metabolism, and inflammation status in coronary heart disease (CHD) patients...
October 5, 2016: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/27678433/assessment-of-postprandial-triglycerides-in-clinical-practice-validation-in-a-general-population-and-coronary-heart-disease-patients
#18
Pablo Perez-Martinez, Juan F Alcala-Diaz, Edmon K Kabagambe, Antonio Garcia-Rios, Michael Y Tsai, Javier Delgado-Lista, Genovefa Kolovou, Robert J Straka, Francisco Gomez-Delgado, Paul N Hopkins, Carmen Marin, Ingrid Borecki, Elena M Yubero-Serrano, James E Hixson, Antonio Camargo, Michael A Province, Javier Lopez-Moreno, Fernando Rodriguez-Cantalejo, Francisco J Tinahones, Dimitri P Mikhailidis, Francisco Perez-Jimenez, Donna K Arnett, Jose M Ordovas, Jose Lopez-Miranda
BACKGROUND: Previous studies have suggested that for clinical purposes, subjects with fasting triglycerides (TGs) between 89-180 mg/dl (1-2 mmol/l) would benefit from postprandial TGs testing. OBJECTIVE: To determine the postprandial TG response in 2 independent studies and validate who should benefit diagnostically from an oral-fat tolerance test (OFTT) in clinical practice. METHODS: A population of 1002 patients with coronary heart disease (CHD) from the CORDIOPREV clinical trial and 1115 white US subjects from the GOLDN study underwent OFTTs...
September 2016: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/27629052/lunch-eating-predicts-weight-loss-effectiveness-in-carriers-of-the-common-allele-at-perilipin1-the-ontime-obesity-nutrigenetics-timing-mediterranean-study
#19
Marta Garaulet, Beatriz Vera, Gemma Bonnet-Rubio, Purificación Gómez-Abellán, Yu-Chi Lee, José M Ordovás
BACKGROUND: We propose that eating lunch late impairs the mobilization of fat from adipose tissue, particularly in carriers of PERILIPIN1 (PLIN1) variants. OBJECTIVE: The aim was to test the hypothesis that PLIN1, a circadian lipid-stabilizing protein in the adipocyte, interacts with the timing of food intake to affect weight loss. DESIGN: A total of 1287 overweight and obese subjects [229 men and 1058 women; mean ± SD body mass index (in kg/m(2)): 31 ± 5] who attended outpatient obesity clinics were enrolled in the ONTIME (Obesity, Nutrigenetics, Timing, Mediterranean) study...
October 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27628044/genetic-admixture-and-body-composition-in-puerto-rican-adults-from-the-boston-puerto-rican-osteoporosis-study
#20
Sabrina E Noel, Sandra Arevalo, Caren E Smith, Chao-Qiang Lai, Bess Dawson-Hughes, Jose M Ordovas, Katherine L Tucker
Population admixture plays a role in the risk of chronic conditions that are related to body composition; however, our understanding of these associations in Puerto Ricans, a population characterized by multiple ancestries, is limited. This study investigated the relationship between genetic admixture and body composition in 652 Puerto Ricans from the Boston Puerto Rican Osteoporosis Study. Genetic ancestry was estimated from 100 ancestry-informative markers. Body composition measures were obtained from dual-energy X-ray absorptiometry...
September 14, 2016: Journal of Bone and Mineral Metabolism
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