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Xin Dai, Gayan Bowatte, Adrian J Lowe, Melanie C Matheson, Lyle C Gurrin, John A Burgess, Shyamali C Dharmage, Caroline J Lodge
PURPOSE OF REVIEW: Glutathione S-transferase (GST) genes are involved in oxidative stress management and may modify the impact of indoor air pollution. We aimed to assess the influence of GST genes on the relationship between indoor air pollution and allergy/lung function. RECENT FINDINGS: Our systematic review identified 22 eligible studies, with 15 supporting a gene-environment interaction. Carriers of GSTM1/T1 null and GSTP1 val genotypes were more susceptible to indoor air pollution exposures, having a higher risk of asthma and lung function deficits...
March 20, 2018: Current Allergy and Asthma Reports
Jing Dong, David M Levine, Matthew F Buas, Rui Zhang, Lynn Onstad, Rebecca C Fitzgerald, Douglas A Corley, Nicholas J Shaheen, Jesper Lagergren, Laura J Hardie, Brian J Reid, Prasad G Iyer, Harvey A Risch, Carlos Caldas, Isabel Caldas, Paul D Pharoah, Geoffrey Liu, Marilie D Gammon, Wong-Ho Chow, Leslie Bernstein, Nigel C Bird, Weimin Ye, Anna H Wu, Lesley A Anderson, Stuart MacGregor, David C Whiteman, Thomas L Vaughan, Aaron P Thrift
BACKGROUND & AIMS: Genome-wide association studies (GWAS) have identified more than 20 susceptibility loci for esophageal adenocarcinoma (EA) and Barrett's esophagus (BE). However, variants in these loci account for a small fraction of cases of EA and BE. Genetic factors might interact with environmental factors to affect risk of EA and BE. We aimed to identify single nucleotide polymorphisms (SNPs) that may modify the associations of body mass index (BMI), smoking, and gastroesophageal reflux disease (GERD), with risks of EA and BE...
March 15, 2018: Clinical Gastroenterology and Hepatology
Øystein A Haaland, Rolv T Lie, Julia Romanowska, Miriam Gjerdevik, Håkon K Gjessing, Astanand Jugessur
Background: It is widely accepted that cleft lip with or without cleft palate (CL/P) results from the complex interplay between multiple genetic and environmental factors. However, a robust investigation of these gene-environment (GxE) interactions at a genome-wide level is still lacking for isolated CL/P. Materials and Methods: We used our R-package Haplin to perform a genome-wide search for GxE effects in isolated CL/P. From a previously published GWAS, genotypes and information on maternal periconceptional cigarette smoking, alcohol intake, and vitamin use were available on 1908 isolated CL/P triads of predominantly European or Asian ancestry...
2018: Frontiers in Genetics
Michael D Kappelman, Aksel Lange, Rachel L Randell, Patricia V Basta, Robert S Sandler, Kristina Laugesen, Anna Byrjalsen, Tina Christensen, Trine Frøslev, Rune Erichsen
Background: Epidemiologic studies combining exposure and outcome data with the collection of biosamples are needed to study gene-environment interactions that might contribute to the etiology of complex diseases such as pediatric Crohn's disease (CD). Nationwide registries, including those in Denmark and other Scandinavian countries, provide efficient and reliable sources of data for epidemiological studies evaluating the environmental determinants of disease. We performed a pilot study to test the feasibility of collecting salivary DNA to augment registry data in established cases of pediatric CD and randomly selected, population-based controls...
2018: Clinical Epidemiology
Stuart K Kim, John P A Ioannidis, Marwa A Ahmed, Andrew L Avins, John P Kleimeyer, Michael Fredericson, Jason L Dragoo
Plantar fascial disorder is comprised of plantar fasciitis and plantar fibromatosis. Plantar fasciitis is the most common cause of heel pain, especially for athletes involved in running and jumping sports. Plantar fibromatosis is a rare fibrous hyperproliferation of the deep connective tissue of the foot. To identify genetic loci associated with plantar fascial disorders, a genome-wide association screen was performed using publically available data from the Research Program in Genes, Environment and Health including 21,624 cases of plantar fascial disorders and 80,879 controls...
March 13, 2018: International Journal of Sports Medicine
Trinidad Dierssen-Sotos, Camilo Palazuelos-Calderón, José-Juan Jiménez-Moleón, Nuria Aragonés, Jone M Altzibar, Gemma Castaño-Vinyals, Vicente Martín-Sanchez, Inés Gómez-Acebo, Marcela Guevara, Adonina Tardón, Beatriz Pérez-Gómez, Pilar Amiano, Victor Moreno, Antonio J Molina, Jéssica Alonso-Molero, Conchi Moreno-Iribas, Manolis Kogevinas, Marina Pollán, Javier Llorca
BACKGROUND: Reproductive factors are well known risk factors for breast cancer; however, little is known about how genetic variants in hormonal pathways interact with that relationship. METHODS: One thousand one hundred thirty nine cases of breast cancer in women and 1322 frequency-matched controls were compared. Genetic variants in hormonal pathways (identified in the Kyoto Encyclopedia of Genes and Genomes) were screened according to their relationship with breast cancer using the Cochran-Armitage statistic...
March 12, 2018: BMC Cancer
Meifang Su, Xiaoying Chen, Yue Chen, Congyun Wang, Songtao Li, Xuhua Ying, Tian Xiao, Na Wang, Qingwu Jiang, Chaowei Fu
BACKGROUND: There are disparities for the association between uncoupling proteins (UCP) and type 2 diabetes (T2DM). The study was to examine the associations of genetic variants of UCP2 and UCP3 with prediabetes and T2DM in a rural Chinese population. METHODS: A population-based case-control study of 397 adults with T2DM, 394 with prediabetes and 409 with normal glucose tolerance (NGT) was carried out in 2014 in a rural community in eastern China. Three groups were identified through a community survey and the prediabetes and NGT groups were frequently matched by age and gender with the T2DM group and they were not relatives of T2DM subjects...
March 12, 2018: BMC Medical Genetics
Johanna R Rochester, Ashley L Bolden, Carol F Kwiatkowski
BACKGROUND: Attention-deficit hyperactivity disorder (ADHD) has increased in prevalence in the past decade. Studies attempting to identify a specific genetic component have not been able to account for much of the heritability of ADHD, indicating there may be gene-environment interactions underlying the disorder, including early exposure to environmental chemicals. Based on several relevant studies, we chose to examine bisphenol A (BPA) as a possible contributor to ADHD in humans. BPA is a widespread environmental chemical that has been shown to disrupt neurodevelopment in rodents and humans...
March 3, 2018: Environment International
Danielle Mercatante Carrick, Anthony Dickherber, Rao L Divi
No abstract text is available yet for this article.
February 7, 2018: American Journal of Epidemiology
Hanna Danielewicz, Anna Dębińska, Anna Drabik-Chamerska, Danuta Kalita, Andrzej Boznański
BACKGROUND: IL-4 and IL-4RA are key factors in allergic inflammation. IL-4 stimulates both IgE production and Th2 lymphocyte differentiation. Increased levels of IL-4 and IL-4RA have been shown in allergic patients. Genetic analyses have confirmed that polymorphisms within the IL-4RA gene influence the risk of allergy and can change the expression of the protein. Due to gene-environment interactions, this process is also likely to be modified by environmental exposure. OBJECTIVES: The aim of the study was to evaluate the IL-4RA gene expression in peripheral blood mononuclear cells (PBMC) from atopic and non-atopic subjects with regard to place of living (urban vs rural)...
February 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Alenka Franko, Nika Kotnik, Katja Goricar, Viljem Kovac, Metoda Dodic-Fikfak, Vita Dolzan
Background: Malignant mesothelioma is a rare cancer with poor outcome, associated with asbestos exposure. Reactive oxygen species may play an important role in the mechanism of carcinogenesis; therefore, genetic variability in antioxidative defence may modify an individual's susceptibility to this cancer. This study investigated the influence of functional polymorphisms of NQO1 , CAT , SOD2 and hOGG1 genes, gene-gene interactions and gene-environment interactions on malignant mesothelioma risk...
March 2018: Radiology and Oncology
Ho-Sun Lee, Taesung Park
Osteoporosis has a complex etiology and is considered a multifactorial polygenic disease, in which genetic determinants are modulated by hormonal, lifestyle, environmental, and nutritional factors. Therefore, investigating these multiple factors, and the interactions between them, might lead to a better understanding of osteoporosis pathogenesis, and possible therapeutic interventions. The objective of this study was to identify the relationship between three blood metals (Pb, Cd, and Al), in smoking and nonsmoking patients' sera, and prevalence of osteoporosis...
2018: PloS One
Eduard Vieta, Michael Berk, Thomas G Schulze, André F Carvalho, Trisha Suppes, Joseph R Calabrese, Keming Gao, Kamilla W Miskowiak, Iria Grande
Bipolar disorders are chronic and recurrent disorders that affect >1% of the global population. Bipolar disorders are leading causes of disability in young people as they can lead to cognitive and functional impairment and increased mortality, particularly from suicide and cardiovascular disease. Psychiatric and nonpsychiatric medical comorbidities are common in patients and might also contribute to increased mortality. Bipolar disorders are some of the most heritable psychiatric disorders, although a model with gene-environment interactions is believed to best explain the aetiology...
March 8, 2018: Nature Reviews. Disease Primers
Katie Stoll, Shobana Kubendran, Stephanie A Cohen
Precision medicine aims to approach disease treatment and prevention with consideration of the variability in genes, environment, and lifestyle for each person. This focus on the individual is also key to the practice of genetic counseling, whereby foundational professional values prioritize informed and autonomous patient decisions regarding their genetic health. Genetic counselors are ideally suited to help realize the goals of the precision medicine. However, a limited genetic counseling workforce at a time in which there is a rapidly growing need for services is challenging the balance of supply and demand...
March 7, 2018: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
Valentina Escott-Price, Daniel J Smith, Kimberley Kendall, Joey Ward, George Kirov, Michael J Owen, James Walters, Michael C O'Donovan
BACKGROUND: There is strong evidence that people born in winter and in spring have a small increased risk of schizophrenia. As this 'season of birth' effect underpins some of the most influential hypotheses concerning potentially modifiable risk exposures, it is important to exclude other possible explanations for the phenomenon. METHODS: Here we sought to determine whether the season of birth effect reflects gene-environment confounding rather than a pathogenic process indexing environmental exposure...
March 4, 2018: Psychological Medicine
Xenia Gonda, Gabor Hullam, Peter Antal, Nora Eszlari, Peter Petschner, Tomas Gm Hökfelt, Ian Muir Anderson, John Francis William Deakin, Gabriella Juhasz, Gyorgy Bagdy
Depression is a polygenic and multifactorial disorder where environmental effects exert a significant impact, yet most genetic studies do not consider the effect of stressors which may be one reason for the lack of replicable results in candidate gene studies, GWAS and between human studies and animal models. Relevance of functional polymorphisms in seven candidate genes previously implicated in animal and human studies on a depression-related phenotype given various recent stress exposure levels was assessed with Bayesian relevance analysis in 1682 subjects...
March 2, 2018: Scientific Reports
Soyeon Cha, Joon Ho Kang, Jae-Hak Lee, Jinki Kim, Heewon Kim, Yoon Jung Yang, Woong-Yang Park, Jinho Kim
The past decade has witnessed the discovery of obesity-related genetic variants and their functions through genome-wide association studies. Combinations of risk alleles can influence obesity phenotypes with different degrees of effectiveness across various individuals by interacting with environmental factors. We examined the interaction between genetic variation and changes in dietary habits or exercise that influences body fat loss from a large Korean cohort ( n = 8840). Out of 673 obesity-related SNPs, a total of 100 SNPs (37 for carbohydrate intake; 19 for fat intake; 44 for total calories intake; 25 for exercise onset) identified to have gene-environment interaction effect in generalized linear model were used to calculate genetic risk scores (GRS)...
February 26, 2018: Nutrients
J A Gill, Michele A La Merrill
Metabolic disease is a leading cause of death worldwide, and obesity, a central risk factor, is reaching epidemic proportions. Energy expenditure and brown adipose tissue (BAT) thermogenesis are implicated in metabolic disease, and it is becoming evident that impaired BAT activity is regulated by gene/environment interactions. Peroxisome proliferator-activated receptor γ coactivator 1α (Pgc-1α) is a critical regulator of BAT thermogenesis, which is highly inducible by environmental stimuli such as cold and diet...
May 2017: Environmental Epigenetics
Ahmed Ahmed, Amir Hakim, Allan Becker
Background: Little is known about the prevalence of asthma, allergic rhinitis, eczema and allergies among Canadian Inuit children, especially those living in the arctic and subarctic areas. Methods: A cross-sectional study among Grade 1 students attending schools in Iqaluit, the capital of Nunavut, was conducted during the 2015/2016 school year. We used the International Study of Allergy and Asthma in Children questionnaire with added questions relevant to the population...
2018: Allergy, Asthma, and Clinical Immunology
C M Imai, T I Halldorsson, T Aspelund, G Eiriksdottir, L J Launer, I Thorsdottir, T B Harris, V Gudnason, I A Brouwer, I Gunnarsdottir
BACKGROUND: Deficits in n-3 fatty acids may be associated with depression. However, data are scarce from older adults who are at greater risk of poor dietary intake and of developing depression. OBJECTIVE: To investigate proportion of plasma phospholipid fatty acids with respect to depressive symptoms and major depressive disorder in community dwelling older adults. METHODS: Cross-sectional analyses of 1571 participants in the Age, Gene/Environment Susceptibility (AGES)-Reykjavik Study aged 67-93 years...
2018: Journal of Nutrition, Health & Aging
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