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Genetically modified food

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https://www.readbyqxmd.com/read/29462651/no-subchronic-toxicity-of-multiple-herbicide-resistant-soybean-fg72-in-sprague-dawley-rats-by-90-days-feeding-study
#1
Zixin Xie, Shiying Zou, Wentao Xu, Xu Liu, Kunlun Huang, Xiaoyun He
The genetically modified (GM) soybean FG72 contains two exogenous genes: p-hydroxyphenylpyruvate dioxygenase (hppd) and double mutant 5-enol pyruvylshikimate-3-phosphate synthase (2mepsps), endowing the FG72 with the glyphosate and isoxaflutole herbicides resistant abilities for presence of the 2mEPSPS and HPPD W336 proteins. A food safety assessment of GM soybean FG72 was evaluated by a 90-days feeding study using three different dietary concentrations (7.5%, 15%, or 30% w/w) of the GM soybean or its corresponding non-GM cultivar Jack fed to Sprague-Dawley rats...
February 17, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29459232/arsenic-methylation-capacity-in-relation-to-nutrient-intake-and-genetic-polymorphisms-in-one-carbon-metabolism
#2
Brenda Gamboa-Loira, César Hernández-Alcaraz, A Jay Gandolfi, Mariano E Cebrián, Ana Burguete-García, Angélica García-Martínez, Lizbeth López-Carrillo
BACKGROUND: Nutrients and genetic polymorphisms participating in one-carbon metabolism may explain interindividual differences in inorganic arsenic (iAs) methylation capacity, which in turn may account for variations in susceptibility to iAs-induced diseases. OBJECTIVES: 1) To evaluate the association between polymorphisms in five one-carbon metabolism genes (FOLH1 c.223 T > C, MTHFD1 c.1958 G > A, MTHFR c.665 C > T, MTR c.2756 A > G, and MTRR c.66 A > G) and iAs methylation capacity; 2) To assess if previously reported associations between nutrient intake and iAs methylation capacity are modified by those polymorphisms...
February 17, 2018: Environmental Research
https://www.readbyqxmd.com/read/29446765/gut-microbiota-based-therapies-for-irritable-bowel-syndrome
#3
Emily K Stern, Darren M Brenner
Irritable bowel syndrome (IBS) is a common, heterogeneous disorder characterized by abdominal pain associated with changes in bowel habits. The pathogenesis of IBS is multifactorial and may relate to alterations in the gut microbiota, changes in visceral sensation and motility, and genetic and environmental factors. Administration of systemic antibiotics may increase the risk of IBS by altering gastrointestinal homeostasis. Therapeutic interventions for IBS with diarrhea that are thought to target alterations in the gut microbiota include the nonsystemic antibiotic rifaximin, the medical food serum-derived bovine immunoglobulin, prebiotics, probiotics, and dietary modification...
February 15, 2018: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/29433995/precision-nutrition-for-prevention-and-management-of-type-2-diabetes
#4
REVIEW
Dong D Wang, Frank B Hu
Precision nutrition aims to prevent and manage chronic diseases by tailoring dietary interventions or recommendations to one or a combination of an individual's genetic background, metabolic profile, and environmental exposures. Recent advances in genomics, metabolomics, and gut microbiome technologies have offered opportunities as well as challenges in the use of precision nutrition to prevent and manage type 2 diabetes. Nutrigenomics studies have identified genetic variants that influence intake and metabolism of specific nutrients and predict individuals' variability in response to dietary interventions...
February 9, 2018: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/29427161/safety-of-pseudomonas-chlororaphis-as-a-gene-source-for-genetically-modified-crops
#5
Jennifer A Anderson, Jamie Staley, Mary Challender, Jamie Heuton
Genetically modified crops undergo extensive evaluation to characterize their food, feed and environmental safety prior to commercial introduction, using a well-established, science-based assessment framework. One component of the safety assessment includes an evaluation of each introduced trait, including its source organism, for potential adverse pathogenic, toxic and allergenic effects. Several Pseudomonas species have a history of safe use in agriculture and certain species represent a source of genes with insecticidal properties...
February 9, 2018: Transgenic Research
https://www.readbyqxmd.com/read/29422865/dietary-safety-assessment-of-flk1-transgenic-fish
#6
Yalan Wei, Ling Huang, Jinghui Cao, Chenghui Wang, Jizhou Yan
Genetic engineering, also called genetic modification, is facing with growing demands of aquaculture and aquatic products. Although various genetically modified (GM) aquatics have been generated, it is important to evaluate biosafety of GM organisms on the human health before entering into our food chain. For this purpose, we establish a zebrafish wild adult feeding Flk1-transgenic larvae model to examine the predatory fish's histology in multiple tissues, and the global gene expression profile in the liver...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29414707/analyzing-thermal-stability-of-cell-membrane-of%C3%A2-salmonella-using-time-multiplexed-impedance-sensing
#7
Aida Ebrahimi, Laszlo N Csonka, Muhammad A Alam
Heat treatment is one of the most widely used methods for inactivation of bacteria in food products. Heat-induced loss of bacterial viability has been variously attributed to protein denaturation, oxidative stress, or membrane leakage; indeed, it is likely to involve a combination of these processes. We examine the effect of mild heat stress (50-55°C for ≤12 min) on cell permeability by directly measuring the electrical conductance of samples of Salmonella enterica serovar Typhimurium to answer a fundamental biophysical question, namely, how bacteria die under mild heat stress...
February 6, 2018: Biophysical Journal
https://www.readbyqxmd.com/read/29407674/biopolymer-strategy-for-the-treatment-of-wilson-s-disease
#8
Miroslav Vetrik, Jana Mattova, Hana Mackova, Jan Kucka, Pavla Pouckova, Olivia Kukackova, Jiri Brus, Sebastian Eigner-Henke, Ondrej Sedlacek, Ludek Sefc, Petr Stepanek, Martin Hruby
Wilson's disease is a genetic disorder that causes excessive accumulation of copper in the body, leading to toxic damage, especially in the liver and nervous system. The current treatment cause burdensome side effects. We describe the use of chemically modified biopolymer carriers based on microcrystalline cellulose and chitosan containing the highly specific copper chelator 8-hydroxyquinoline as a new type of therapy for Wilson's disease. The chelators can scavenges copper ions released from food during digestion and copper ions present in secretions in the gastrointestinal tract...
February 1, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29374794/the-interaction-between-apolipoprotein-b-insertion-deletion-polymorphism-and-macronutrient-intake-on-lipid-profile-and-serum-leptin-and-ghrelin-levels-in-type-2-diabetes-mellitus-patients
#9
Masoumeh Rafiee, Gity Sotoudeh, Mahmoud Djalali, Ehsan Alvandi, Mohammadreza Eshraghian, Fatemeh Javadi, Farideh Doostan, Fariba Koohdani
PURPOSE: We aimed to study whether macronutrient intake could modify the association between ApoB Ins/Del and lipid profile, and serum leptin and ghrelin in type 2 diabetes mellitus (T2DM) patients. METHODS: In this study, 700 T2DM patients were recruited. Anthropometric, biochemical and molecular data were collected, and Diet was assessed using a food frequency questionnaire. The interactions were tested using ANCOVA. RESULTS: Del-allele carriers with high-MUFA and carbohydrate (≥ 12 and ≥ 54% of energy, respectively) had significantly higher TG (P = 0...
January 27, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29355665/scientific-underpinnings-of-biotechnology-regulatory-frameworks
#10
Savannah Gleim, Stuart J Smyth
Part of what is presently missing at domestic regulatory levels (and that is important at the international level as well) is a detailed understanding of what the rules of, and for, regulation should be, who the actors, stakeholders and major decision makers are and finally, how to get agreement about the rules. Greater insights into the system of rules that underpin regulatory frameworks for agri-food and biotechnology products in genetically modified (GM) crop- adopting nations will provide value by clarifying the evidence used to commercialize these technologies...
January 17, 2018: New Biotechnology
https://www.readbyqxmd.com/read/29343740/modifiable-lifestyle-behaviors-but-not-a-genetic-risk-score-associate-with-metabolic-syndrome-in-evening-chronotypes
#11
Beatriz Vera, Hassan S Dashti, Purificación Gómez-Abellán, Antonio M Hernández-Martínez, Alberto Esteban, Frank A J L Scheer, Richa Saxena, Marta Garaulet
Evening chronotype associates with health complications possibly via lifestyle factors, while the contribution of genetics is unknown. The aim was to study the relative contributions of genetics, lifestyle, and circadian-related physiological characteristics in metabolic risk of evening chronotype. In order to capture a biological contribution to chronotype, a genetic-risk-score (GRS), comprised of 15 chronotype-related variants, was tested. Moreover, a wide range of behavioral and emotional eating factors was studied within the same population...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29337228/withdrawn-monitoring-the-prevalence-of-genetically-modified-gm-maize-in-iran-food-products
#12
Motahreh Sadat Hosseini, Gilda Eslami, Bahador Hajimohammadi, Hossein Fallahzadeh, Zahra Derakhshan, Gea Oliveri Conti, Margherita Ferrante
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
January 11, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29310289/an-ultrasensitive-electrochemical-immunosensor-for-cry1ab-based-on-phage-displayed-peptides
#13
Xin Lu, Dong-Jian Jiang, Jia-Xiang Yan, Zhen-E Ma, Xiu-Er Luo, Tai-Long Wei, Yang Xu, Qing-Hua He
The rapid and widespread adoption of Bacillus thuringiensis (Bt) proteins in genetically modified (GM) crops has raised concerns about the impact of GM crops on environment and food safety. A sensitive and specific method for detecting Bt proteins in GM crops is of great significance for environment and food risk assessment. In this study, using Cry1Ab as a model Bt protein, an ultrasensitive electrochemical immunosensor for Cry1Ab protein has been developed based on phage displayed peptide. Phage displayed peptides against Cry1Ab protein were obtained from a phage displayed peptide library without animal immunization process through biopanning-elution strategy...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29306662/ciguatoxins-activate-the-calcineurin-signalling-pathway-in-yeasts-potential-for-development-of-an-alternative-detection-tool
#14
Hélène Martin-Yken, Camille Gironde, Sylvain Derick, Hélène Taiana Darius, Christophe Furger, Dominique Laurent, Mireille Chinain
Ciguatoxins (CTXs) are lipid-soluble polyether compounds produced by dinoflagellates from the genus Gambierdiscus spp. typically found in tropical and subtropical zones. This endemic area is however rapidly expanding due to environmental perturbations, and both toxic Gambierdiscus spp. and ciguatoxic fishes have been recently identified in the North Atlantic Ocean (Madeira and Canary islands) and Mediterranean Sea. Ciguatoxins bind to Voltage Gated Sodium Channels on the membranes of sensory neurons, causing Ciguatera Fish Poisoning (CFP) in humans, a disease characterized by a complex array of gastrointestinal, neurological, neuropsychological, and cardiovascular symptoms...
January 4, 2018: Environmental Research
https://www.readbyqxmd.com/read/29251599/three-parent-baby-is-it-ethical
#15
Neha Dahiya, Suneela Garg
The UK was the first country to legalise mitochondrial donation in October 2015. In 2016, the first three-parent baby was born in Mexico and the US Food and Drug Administration declared that further research on mitochondrial donation is ethically permissible. It has now become an important issue, raising as it does, the spectre of "genetically modified designer babies".
November 14, 2017: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/29243104/skepticism-regarding-vaccine-and-gluten-free-food-safety-among-patients-with-celiac-disease-and-non-celiac-gluten-sensitivity
#16
Loren G Rabinowitz, Haley M Zylberberg, Alan Levinovitz, Melissa S Stockwell, Peter H R Green, Benjamin Lebwohl
BACKGROUND: There has been a marked increase in the adoption of the gluten-free (GF) diet. AIMS: To query individuals with celiac disease (CD) and non-celiac gluten sensitivity (NCGS) on their beliefs toward the health effects of gluten, and safety of vaccines and GF food products. METHODS: We distributed a Web-based survey to individuals with CD and NCGS on a CD center e-mail list. We used univariate and multivariate analysis to compare responses of respondents with CD and NCGS...
December 14, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29227304/cell-based-immunotherapy-in-gynecologic-malignancies
#17
Bruce Schaar, Venkatesh Krishnan, Supreeti Tallapragada, Oliver Dorigo
PURPOSE OF REVIEW: To provide an overview of the principles, safety and efficacy of adoptive cell therapy (ACT) in solid tumors particularly in gynecological cancers. RECENT FINDINGS: Efforts to target solid tumors using tumor-infiltrating lymphocytes and genetically modified T cells have shown promising efficacy in some patients. Two food and drug administration approvals for the treatment of leukemia are the first gene therapies available for cancer treatment in the United States...
December 7, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29203875/the-individual-environment-not-the-family-is-the-most-important-influence-on-preferences-for-common-non-alcoholic-beverages-in-adolescence
#18
Andrea D Smith, Alison Fildes, Suzanna Forwood, Lucy Cooke, Clare Llewellyn
Beverage preferences are an important driver of consumption, and strong liking for beverages high in energy (e.g. sugar-sweetened beverages [SSBs]) and dislike for beverages low in energy (e.g. non-nutritive sweetened beverages [NNSBs]) are potentially modifiable risk factors contributing to variation in intake. Twin studies have established that both genes and environment play important roles in shaping food preferences; but the aetiology of variation in non-alcoholic beverage preferences is unknown. 2865 adolescent twins (18-19-years old) from the Twins Early Development Study were used to quantify genetic and environmental influence on variation in liking for seven non-alcoholic beverages: SSBs; NNSBs; fruit cordials, orange juice, milk, coffee, and tea...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29192598/personalized-medicine-pharmacogenomic-and-companion-biomarker
#19
Hana Manceau, Kawthar Amrani, Katell Peoc'h
The aim of this review is to provide a brief overview of personalized medicine, pharmacogenetics and companion tests. Personalized or stratified medicine is a new paradigm in the management of patients, aimed at better taking into account inter-individual variability. The response to drugs' intake varies considerably, depending on the transport and metabolism of the drugs, the target and the pathophysiological characteristics of the organism. Each stage is very variable and can be modified by endogenous factors (pathophysiology, age, sex, genetics…) or exogenous (environmental: taking other medicines, food, tobacco, alcohol…)...
December 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/29192561/genetic-engineering-as-a-powerful-tool-to-improve-probiotic-strains
#20
Daniel Bravo, José M Landete
Over the last decade, there has been increasing interest in the use of probiotic microorganisms. However, certain doubts have arisen around probiotics, because of the beneficial effects of these microorganisms are not clear yet, and in many occasions those beneficial effects have not been proven. Therefore, it would be of interest if these probiotic strains were able to acquire new attributes to allow them improve and increase their beneficial characteristics. Genetic engineering can be used for human applications; for instance, the resistance to antibiotics is removed and the probiotic bacteria are modified in its own DNA...
December 1, 2017: Biotechnology & Genetic Engineering Reviews
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