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https://www.readbyqxmd.com/read/29338102/circulating-serum-25-hydroxyvitamin-d-levels-and-bone-mineral-density-mendelian-randomization-study
#1
Susanna C Larsson, Håkan Melhus, Karl Michaëlsson
There is considerable discussion of the importance for increased serum 25-hydroxyvitamin D (S-25OHD) concentration associated with adequacy for bone health. Accordingly, whether long-term high S-25OHD concentration in general positively affects bone mineral density (BMD) is uncertain. We used a Mendelian randomization design to determine the association between genetically increased S-25OHD concentrations and BMD. Five single-nucleotide polymorphisms (SNPs) in or near genes encoding enzymes and carrier proteins involved in vitamin D synthesis or metabolism were used as instrumental variables to genetically predict one standard deviation increase in S-25OHD concentration...
January 16, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29335253/women-s-reproductive-factors-and-incident-cardiovascular-disease-in-the-uk-biobank
#2
Sanne Ae Peters, Mark Woodward
BACKGROUND: Studies have suggested that women's reproductive factors are associated with the risk of cardiovascular disease (CVD); however, findings are mixed. We assessed the relationship between reproductive factors and incident CVD in the UK Biobank. METHODS: Between 2006 and 2010, the UK Biobank recruited over 500 000 participants aged 40-69 years across the UK. During 7 years of follow-up, 9054 incident cases of CVD (34% women), 5782 cases of coronary heart disease (CHD) (28% women), and 3489 cases of stroke (43% women) were recorded among 267 440 women and 215 088 men without a history of CVD at baseline...
January 15, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29333270/lessons-from-ten-years-of-genome-wide-association-studies-of-asthma
#3
REVIEW
Cristina T Vicente, Joana A Revez, Manuel A R Ferreira
Twenty-five genome-wide association studies (GWAS) of asthma were published between 2007 and 2016, the largest with a sample size of 157242 individuals. Across these studies, 39 genetic variants in low linkage disequilibrium (LD) with each other were reported to associate with disease risk at a significance threshold of P<5 × 10-8, including 31 in populations of European ancestry. Results from analyses of the UK Biobank data (n=380 503) indicate that at least 28 of the 31 associations reported in Europeans represent true-positive findings, collectively explaining 2...
December 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/29332840/examining-patterns-of-multimorbidity-polypharmacy-and-risk-of-adverse-drug-reactions-in-chronic-obstructive-pulmonary-disease-a-cross-sectional-uk-biobank-study
#4
Peter Hanlon, Barbara I Nicholl, Bhautesh Dinesh Jani, Ross McQueenie, Duncan Lee, Katie I Gallacher, Frances S Mair
OBJECTIVE: This study aims: (1) to describe the pattern and extent of multimorbidity and polypharmacy in UK Biobank participants with chronic obstructive pulmonary disease (COPD) and (2) to identify which comorbidities are associated with increased risk of adverse drug reactions (ADRs) resulting from polypharmacy. DESIGN: Cross-sectional. SETTING: Community cohort. PARTICIPANTS: UK Biobank participants comparing self-reported COPD (n=8317) with no COPD (n=494 323)...
January 14, 2018: BMJ Open
https://www.readbyqxmd.com/read/29329063/seasonality-of-depressive-symptoms-in-women-but-not-in-men-a-cross-sectional-study-in-the-uk-biobank-cohort
#5
Laura M Lyall, Cathy A Wyse, Carlos A Celis-Morales, Donald M Lyall, Breda Cullen, Daniel Mackay, Joey Ward, Nicholas Graham, Rona J Strawbridge, Jason M R Gill, Amy Ferguson, Mark E S Bailey, Jill P Pell, Annie M Curtis, Daniel J Smith
BACKGROUND: We examined whether seasonal variations in depressive symptoms occurred independently of demographic and lifestyle factors, and were related to change in day length and/or outdoor temperature. METHODS: In a cross-sectional analysis of >150,000 participants of the UK Biobank cohort, we used the cosinor method to assess evidence of seasonality of a total depressive symptoms score and of low mood, anhedonia, tenseness and tiredness scores in women and men...
January 4, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29325150/the-relationship-between-alcohol-use-and-long-term-cognitive-decline-in-middle-and-late-life-a-longitudinal-analysis-using-uk-biobank
#6
Giovanni Piumatti, Simon C Moore, Damon M Berridge, Chinmoy Sarkar, John Gallacher
Background: Using UK Biobank data, this study sought to explain the causal relationship between alcohol intake and cognitive decline in middle and older aged populations. Methods: Data from 13 342 men and women, aged between 40 and 73 years were used in regression analysis that tested the functional relationship and impact of alcohol on cognitive performance. Performance was measured using mean reaction time (RT) and intra-individual variation (IIV) in RT, collected in response to a perceptual matching task...
January 9, 2018: Journal of Public Health
https://www.readbyqxmd.com/read/29317602/genome-wide-meta-analyses-of-stratified-depression-in-generation-scotland-and-uk-biobank
#7
Lynsey S Hall, Mark J Adams, Aleix Arnau-Soler, Toni-Kim Clarke, David M Howard, Yanni Zeng, Gail Davies, Saskia P Hagenaars, Ana Maria Fernandez-Pujals, Jude Gibson, Eleanor M Wigmore, Thibaud S Boutin, Caroline Hayward, Generation Scotland, David J Porteous, Ian J Deary, Pippa A Thomson, Chris S Haley, Andrew M McIntosh
Few replicable genetic associations for Major Depressive Disorder (MDD) have been identified. Recent studies of MDD have identified common risk variants by using a broader phenotype definition in very large samples, or by reducing phenotypic and ancestral heterogeneity. We sought to ascertain whether it is more informative to maximize the sample size using data from all available cases and controls, or to use a sex or recurrent stratified subset of affected individuals. To test this, we compared heritability estimates, genetic correlation with other traits, variance explained by MDD polygenic score, and variants identified by genome-wide meta-analysis for broad and narrow MDD classifications in two large British cohorts - Generation Scotland and UK Biobank...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29314248/calcium-and-vitamin-d-supplementation-are-not-associated-with-risk-of-incident-ischaemic-cardiac-events-or-death-findings-from-the-uk-biobank-cohort
#8
Nicholas C Harvey, Stefania D'Angelo, Julien Paccou, Elizabeth M Curtis, Mark Edwards, Zahra Raisi-Estabragh, Karen Walker-Bone, Steffen E Petersen, Cyrus Cooper
We investigated associations between calcium/vitamin D supplementation and incident cardiovascular events/deaths in a UK population-based cohort. UK Biobank is a large prospective cohort comprising 502,637 men and women aged 40-69 years at recruitment. Supplementation with calcium/vitamin D was self-reported, and information on incident hospital admission (ICD-10) for ischaemic heart disease (IHD), myocardial infarction (MI) any cardiovascular event, and subsequent death, was obtained from linkage to national registers...
January 4, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29305563/arterial-stiffness-association-with-chronic-inflammatory-disorders-in-the-uk-biobank-study
#9
Alex Dregan
OBJECTIVE: The present study tested the hypothesis that arterial stiffness will be elevated across overall and specific inflammatory disorders compared with an inflammation-free comparison group. METHODS: Adults (n=171 125) aged 40-70 years from the UK Biobank who were cardiovascular disease (CVD) free and who had their arterial stiffness assessed at the time of study recruitment between 2006 and 2010 were included. The main exposure was represented by a global measure of chronic inflammatory disorders...
January 4, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29295838/genetic-evidence-that-carbohydrate-stimulated-insulin-secretion-leads-to-obesity
#10
Christina M Astley, Jennifer N Todd, Rany M Salem, Sailaja Vedantam, Cara B Ebbeling, Paul L Huang, David S Ludwig, Joel N Hirschhorn, Jose C Florez
BACKGROUND: A fundamental precept of the carbohydrate-insulin model of obesity is that insulin secretion drives weight gain. However, fasting hyperinsulinemia can also be driven by obesity-induced insulin resistance. We used genetic variation to isolate and estimate the potentially causal effect of insulin secretion on body weight. METHODS: Genetic instruments of variation of insulin secretion [assessed as insulin concentration 30 min after oral glucose (insulin-30)] were used to estimate the causal relationship between increased insulin secretion and body mass index (BMI), using bidirectional Mendelian randomization analysis of genome-wide association studies...
January 2018: Clinical Chemistry
https://www.readbyqxmd.com/read/29278772/metric-learning-with-spectral-graph-convolutions-on-brain-connectivity-networks
#11
Sofia Ira Ktena, Sarah Parisot, Enzo Ferrante, Martin Rajchl, Matthew Lee, Ben Glocker, Daniel Rueckert
Graph representations are often used to model structured data at an individual or population level and have numerous applications in pattern recognition problems. In the field of neuroscience, where such representations are commonly used to model structural or functional connectivity between a set of brain regions, graphs have proven to be of great importance. This is mainly due to the capability of revealing patterns related to brain development and disease, which were previously unknown. Evaluating similarity between these brain connectivity networks in a manner that accounts for the graph structure and is tailored for a particular application is, however, non-trivial...
December 23, 2017: NeuroImage
https://www.readbyqxmd.com/read/29274927/red-and-processed-meat-consumption-and-breast-cancer-uk-biobank-cohort-study-and-meta-analysis
#12
Jana J Anderson, Narisa D M Darwis, Daniel F Mackay, Carlos A Celis-Morales, Donald M Lyall, Naveed Sattar, Jason M R Gill, Jill P Pell
AIM: Red and processed meat may be risk factors for breast cancer due to their iron content, administration of oestrogens to cattle or mutagens created during cooking. We studied the associations in UK Biobank and then included the results in a meta-analysis of published cohort studies. METHODS: UK Biobank, a general population cohort study, recruited participants aged 40-69 years. Incident breast cancer was ascertained via linkage to routine hospital admission, cancer registry and death certificate data...
December 21, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/29259258/a-prospective-investigation-of-body-size-body-fat-composition-and-colorectal-cancer-risk-in-the-uk-biobank
#13
Luisa Saldana Ortega, Kathryn E Bradbury, Amanda J Cross, Jessica S Morris, Marc J Gunter, Neil Murphy
Obesity has been consistently associated with a greater colorectal cancer risk, but this relationship is weaker among women. In the UK Biobank, we investigated the associations between body size (body mass index [BMI], height, waist circumference, and waist-to-hip ratio) and body fat composition (total body fat percentage and trunk fat percentage) measurements with colorectal cancer risk among 472,526 men and women followed for 5.6 years on average. Multivariable hazard ratios (HRs) and 95% confidence intervals (95%CI) for developing colorectal cancer (2,636 incident cases) were estimated using Cox proportional hazards models...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29249824/associations-of-genetic-determinants-of-serum-vitamin-b12-and-folate-concentrations-with-hay-fever-and-asthma-a-mendelian-randomization-meta-analysis
#14
Tea Skaaby, Amy E Taylor, Rikke K Jacobsen, Line T Møllehave, Nele Friedrich, Betina H Thuesen, Daniel Mønsted Shabanzadeh, Lavinia Paternoster, Uwe Völker, Matthias Nauck, Henry Völzke, Marcus Munafò, Torben Hansen, Oluf Pedersen, Torben Jørgensen, Niels Grarup, Allan Linneberg
BACKGROUND/OBJECTIVES: Studies of the effect of vitamin B12 and folate on the risk of asthma and hay fever have shown inconsistent results that may be biased by reverse causation and confounding. We used a Mendelian randomization approach to examine a potential causal effect of vitamin B12 and folate on hay fever, asthma, and selected biomarkers of allergy by using 11 vitamin B12-associated single-nucleotide polymorphisms (SNPs) and 2 folate-associated SNPs as unconfounded markers. SUBJECTS/METHODS: We included 162,736 participants from 9 population-based studies including the UK Biobank...
December 18, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29242259/chest-computed-tomography-derived-low%C3%A2-fat-free-mass-index-and-mortality-in%C3%A2-copd
#15
Merry-Lynn N McDonald, Alejandro A Diaz, Erica Rutten, Sharon M Lutz, Rola Harmouche, Raul San Jose Estepar, Greg Kinney, John E Hokanson, Barbara A Gower, Emiel F M Wouters, Stephen I Rennard, Craig P Hersh, Richard Casaburi, Mark T Dransfield, Edwin K Silverman, George R Washko
Low fat-free mass index (FFMI) is an independent risk factor for mortality in chronic obstructive pulmonary disease (COPD) not typically measured during routine care. In the present study, we aimed to derive fat-free mass from the pectoralis muscle area (FFMPMA) and assess whether low FFMIPMA is associated with all-cause mortality in COPD cases. We used data from two independent COPD cohorts, ECLIPSE and COPDGene.Two equal sized groups of COPD cases (n=759) from the ECLIPSE study were used to derive and validate an equation to calculate the FFMPMA measured using bioelectrical impedance from PMA...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29237688/heritability-of-atrial-fibrillation
#16
Lu-Chen Weng, Seung Hoan Choi, Derek Klarin, J Gustav Smith, Po-Ru Loh, Mark Chaffin, Carolina Roselli, Olivia L Hulme, Kathryn L Lunetta, Josée Dupuis, Emelia J Benjamin, Christopher Newton-Cheh, Sekar Kathiresan, Patrick T Ellinor, Steven A Lubitz
BACKGROUND: Previous reports have implicated multiple genetic loci associated with AF, but the contributions of genome-wide variation to AF susceptibility have not been quantified. METHODS AND RESULTS: We assessed the contribution of genome-wide single-nucleotide polymorphism variation to AF risk (single-nucleotide polymorphism heritability, h2g ) using data from 120 286 unrelated individuals of European ancestry (2987 with AF) in the population-based UK Biobank...
December 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/29235571/the-hypoxia-marker-caix-is-prognostic-in-the-uk-phase-iii-vortex-biobank-cohort-an-important-resource-for-translational-research-in-soft-tissue-sarcoma
#17
Laura Forker, Piers Gaunt, Stefano Sioletic, Patrick Shenjere, Robert Potter, Darren Roberts, Joely Irlam, Helen Valentine, David Hughes, Ana Hughes, Lucinda Billingham, Rob Grimer, Beatrice Seddon, Ananya Choudhury, Martin Robinson, Catharine M L West
BACKGROUND: Despite high metastasis rates, adjuvant/neoadjuvant systemic therapy for localised soft tissue sarcoma (STS) is not used routinely. Progress requires tailoring therapy to features of tumour biology, which need exploration in well-documented cohorts. Hypoxia has been linked to metastasis in STS and is targetable. This study evaluated hypoxia prognostic markers in the phase III adjuvant radiotherapy VorteX trial. METHODS: Formalin-fixed paraffin-embedded tumour biopsies, fresh tumour/normal tissue and blood were collected before radiotherapy...
December 12, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29235157/dietary-intake-in-people-consuming-a-low-carbohydrate-diet-in-the-uk-biobank
#18
M Shafique, S Russell, S Murdoch, J D Bell, N Guess
BACKGROUND: Low-carbohydrate diets are becoming increasingly popular, although their dietary quality outside of clinical studies is unknown. A previous study analysed the dietary intake in people consuming a reduced-carbohydrate diet (<40% calories). However, it is not clear what foods people consume when carbohydrate is reduced to below 26% of total calories. METHODS: In the present cross-sectional study, the dietary and nutrient intake collected via up to five consecutive 24-h dietary recalls and a food frequency questionnaire of 444 individuals (aged 46-79 years) consuming <26% of calories from carbohydrate (LCHO) was compared with that of 131 897 individuals consuming ≥45% calories from carbohydrate (NCHO) using the UK Biobank Dataset...
December 13, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/29227965/human-longevity-25-genetic-loci-associated-in-389-166-uk-biobank-participants
#19
Luke C Pilling, Chia-Ling Kuo, Kamil Sicinski, Jone Tamosauskaite, George A Kuchel, Lorna W Harries, Pamela Herd, Robert Wallace, Luigi Ferrucci, David Melzer
We undertook a genome-wide association study (GWAS) of parental longevity in European descent UK Biobank participants. For combined mothers' and fathers' attained age, 10 loci were associated (p<5*10-8), including 8 previously identified for traits including survival, Alzheimer's and cardiovascular disease. Of these, 4 were also associated with longest 10% survival (mothers age ≥90 years, fathers ≥87 years), with 2 additional associations including MC2R intronic variants (coding for the adrenocorticotropic hormone receptor)...
December 6, 2017: Aging
https://www.readbyqxmd.com/read/29212778/the-identification-of-64-novel-genetic-loci-provides-an-expanded-view-on-the-genetic-architecture-of-coronary-artery-disease
#20
Pim van der Harst, Niek Verweij
Rationale: Coronary artery disease (CAD) is a complex phenotype driven by genetic and environmental factors. 97 genetic risk loci have been identified so far, but the identification of additional susceptibility loci might be important to enhance our understanding of the genetic architecture of CAD. Objective: To expand the number of genome-wide significant loci, catalog functional insights, and enhance our understanding of the genetic architecture of CAD. Methods and Results: We performed a genome-wide association study (GWAS) in 34,541 CAD cases and 261,984 controls of UK biobank Resource followed by replication in 88,192 cases and 162,544 controls from CARDIoGRAMplusC4D...
December 6, 2017: Circulation Research
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