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Avon study

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https://www.readbyqxmd.com/read/28104625/natural-course-of-chronic-fatigue-syndrome-myalgic-encephalomyelitis-in-adolescents
#1
Tom Norris, Simon M Collin, Kate Tilling, Roberto Nuevo, Stephen A Stansfeld, Jonathan Ac Sterne, Jon Heron, Esther Crawley
OBJECTIVE: Little is known about persistence of or recovery from chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) in adolescents. Previous studies have small sample sizes, short follow-up or have focused on fatigue rather than CFS/ME or, equivalently, chronic fatigue, which is disabling. This work aimed to describe the epidemiology and natural course of CFS/ME in adolescents aged 13-18 years. DESIGN: Longitudinal follow-up of adolescents enrolled in the Avon Longitudinal Study of Parents and Children...
January 19, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28095833/lifetime-and-12-month-prevalence-of-eating-disorders-amongst-women-in-mid-life-a-population-based-study-of-diagnoses-and-risk-factors
#2
Nadia Micali, Maria G Martini, Jennifer J Thomas, Kamryn T Eddy, Radha Kothari, Ellie Russell, Cynthia M Bulik, Janet Treasure
BACKGROUND: Eating disorders (EDs) are common amongst women; however, no research has specifically investigated the lifetime/12-month prevalence of eating disorders amongst women in mid-life (i.e., fourth and fifth decade of life) and the relevant longitudinal risk factors. We aimed to investigate the lifetime and 12-month prevalence of EDs and lifetime health service use and to identify childhood, parenting, and personality risk factors. METHODS: This is a two-phase prevalence study, nested within an existing longitudinal community-based sample of women in mid-life...
January 17, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28089957/the-epigenetic-clock-and-physical-development-during-childhood-and-adolescence-longitudinal-analysis-from-a-uk-birth-cohort
#3
Andrew J Simpkin, Laura D Howe, Kate Tilling, Tom R Gaunt, Oliver Lyttleton, Wendy L McArdle, Susan M Ring, Steve Horvath, George Davey Smith, Caroline L Relton
BACKGROUND: Statistical models that use an individual's DNA methylation levels to estimate their age (known as epigenetic clocks) have recently been developed, with 96% correlation found between epigenetic and chronological age. We postulate that differences between estimated and actual age [age acceleration (AA)] can be used as a measure of developmental age in early life. METHODS: We obtained DNA methylation measures at three time points (birth, age 7 years and age 17 years) in 1018 children from the Avon Longitudinal Study of Parents and Children (ALSPAC)...
January 15, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28044064/asd-and-schizophrenia-show-distinct-developmental-profiles-in-common-genetic-overlap-with-population-based-social-communication-difficulties
#4
B St Pourcain, E B Robinson, V Anttila, B B Sullivan, J Maller, J Golding, D Skuse, S Ring, D M Evans, S Zammit, S E Fisher, B M Neale, R J L Anney, S Ripke, M V Hollegaard, T Werge, A Ronald, J Grove, D M Hougaard, A D Børglum, P B Mortensen, M J Daly, G Davey Smith
Difficulties in social communication are part of the phenotypic overlap between autism spectrum disorders (ASD) and schizophrenia. Both conditions follow, however, distinct developmental patterns. Symptoms of ASD typically occur during early childhood, whereas most symptoms characteristic of schizophrenia do not appear before early adulthood. We investigated whether overlap in common genetic influences between these clinical conditions and impairments in social communication depends on the developmental stage of the assessed trait...
January 3, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/27977232/interpersonal-callousness-and-co-occurring-anxiety-developmental-validity-of-an-adolescent-taxonomy
#5
Alan J Meehan, Barbara Maughan, Charlotte A M Cecil, Edward D Barker
Growing evidence suggests heterogeneity within interpersonal-callous (IC) youth based on co-occurring anxiety. The developmental validity of this proposed taxonomy remains unclear however, as most previous research is cross-sectional and/or limited to adolescence. We aimed to identify low-anxiety (IC/ANX-) and high-anxiety (IC/ANX+) IC variants, and compare these groups on (a) early risk exposures, (b) psychiatric symptoms from midchildhood to early adolescence, and (c) school-based functioning. Using the Avon Longitudinal Study of Parents and Children (ALSPAC), a prospective epidemiological birth cohort, model-based cluster analysis was performed on children with complete age-13 IC and anxiety scores (n = 6,791)...
December 15, 2016: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/27966105/habitual-levels-of-higher-but-not-medium-or-low-impact-physical-activity-are-positively-related-to-lower-limb-bone-strength-in-older-women-findings-from-a-population-based-study-using-accelerometers-to-classify-impact-magnitude
#6
K Hannam, K C Deere, A Hartley, U A Al-Sari, E M Clark, W D Fraser, J H Tobias
: This study assessed the effect of accelerometry-measured higher impacts resulting from habitual weight-bearing activity on lower limb bone strength in older women. Despite higher impacts being experienced rarely in this population-based cohort, positive associations were observed between higher vertical impacts and lower limb bone size and strength. INTRODUCTION: We investigated whether the benefit of habitual weight-bearing physical activity (PA) for lower limb bone strength in older women is explained by exposure to higher impacts, as previously suggested by observations in younger individuals...
December 13, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27943057/effects-of-urinary-incontinence-on-psychosocial-outcomes-in-adolescence
#7
Mariusz T Grzeda, Jon Heron, Alexander von Gontard, Carol Joinson
To examine whether daytime wetting and bedwetting urinary incontinence (UI) in childhood and adolescence are associated with psychosocial problems in adolescence. We used data from the Avon Longitudinal Study of Parents and Children to examine the association between trajectories of UI from 4 to 9 years and self-reported psychosocial problems in adolescence (13-14 years) including depressive symptoms, peer victimisation, poor self-image and school experiences (negative perception of school and teachers, problems with peer relationships)...
December 10, 2016: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/27935522/macro-and-micronutrient-intakes-in-picky-eaters-a-cause-for-concern
#8
Caroline M Taylor, Kate Northstone, Susan M Wernimont, Pauline M Emmett
BACKGROUND: Picky eating (PE) is characterized by an unwillingness to eat certain foods and by strong food preferences. PE may result in lower intakes of energy and nutrients, which may compromise health. OBJECTIVES: We quantified nutrient and food group intakes in children identified as picky eaters or nonpicky eaters and compared intakes between groups and with United Kingdom reference nutrient intakes. DESIGN: PE was identified in an observational cohort (Avon Longitudinal Study of Parents and Children) from questionnaires administered when children were aged 2, 3, 4...
December 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27932233/schizophrenia-risk-alleles-and-neurodevelopmental-outcomes-in-childhood-a-population-based-cohort-study
#9
Lucy Riglin, Stephan Collishaw, Alexander Richards, Ajay K Thapar, Barbara Maughan, Michael C O'Donovan, Anita Thapar
BACKGROUND: Schizophrenia typically onsets after puberty but is often preceded by observable childhood neurodevelopmental impairments. Whether these childhood antecedents index genetic liability is unknown. We used polygenic risk scores derived from a patient discovery sample as indicators of the genetic liability of schizophrenia. Our aim was to identify the early childhood manifestations of this liability in a UK population-based cohort. METHODS: The study sample was the Avon Longitudinal Study of Parents and Children, a prospective population-based cohort study of 14701 children...
January 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/27923430/family-income-and-material-deprivation-do-they-matter-for-sleep-quality-and-quantity-in-early-life
#10
Marta Barazzetta, Simone Ghislandi
STUDY OBJECTIVES: The aim of the present paper is to investigate the determinants of sleeping patterns in children up to age 9 on a large and geographically homogeneous sample of British children and parents, focusing in particular on the role of economic and social factors, specifically on income. METHODS: The data of this study come from the Avon Longitudinal Study of Parents and Children, a long-term health research project that recruited over 14,000 pregnant women who were due to give birth between April 1991 and December 1992 in Bristol and its surrounding areas, including some of Somerset and Gloucestershire...
November 28, 2016: Sleep
https://www.readbyqxmd.com/read/27922636/dna-methylation-and-substance-use-risk-a-prospective-genome-wide-study-spanning-gestation-to-adolescence
#11
C A M Cecil, E Walton, R G Smith, E Viding, E J McCrory, C L Relton, M Suderman, J-B Pingault, W McArdle, T R Gaunt, J Mill, E D Barker
Epigenetic processes have been implicated in addiction; yet, it remains unclear whether these represent a risk factor and/or a consequence of substance use. Here, we believe we conducted the first genome-wide, longitudinal study to investigate whether DNA methylation patterns in early life prospectively associate with substance use in adolescence. The sample comprised of 244 youth (51% female) from the Avon Longitudinal Study of Parents and Children (ALSPAC), with repeated assessments of DNA methylation (Illumina 450k array; cord blood at birth, whole blood at age 7) and substance use (tobacco, alcohol and cannabis use; age 14-18)...
December 6, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27911909/early-onset-paternal-smoking-and-offspring-adiposity-further-investigation-of-a-potential-intergenerational-effect-using-the-hunt-study
#12
David Carslake, Pia R Pinger, Pål Romundstad, George Davey Smith
Recently it has been suggested that rearing conditions during preadolescence in one generation may affect health outcomes in subsequent generations. Such parental effects, potentially induced by epigenetic modifications in the germ line, have attracted considerable attention because of their implications for public health and social policies. Yet, to date, evidence in humans has been rare due to data limitations and much further investigation in large studies is required. The aim of this paper is to reproduce and extend a recent study which found that paternal smoking before age 11 was associated with elevated body mass index (BMI) among male offspring in the Avon Longitudinal Study of Parents and Children (ALSPAC)...
2016: PloS One
https://www.readbyqxmd.com/read/27909036/defining-adolescent-common-mental-disorders-using-electronic-primary-care-data-a-comparison-with-outcomes-measured-using-the-cis-r
#13
Rosie P Cornish, Ann John, Andy Boyd, Kate Tilling, John Macleod
OBJECTIVE: To compare the prevalence of common mental disorders (CMDs) derived from data held in primary care records with that measured using the revised Clinical Interview Schedule (CIS-R) in order to assess the potential robustness of findings based only on routinely collected data. DESIGN AND SETTING: Comparison study using linkage between the Avon Longitudinal Study of Parents and Children (ALSPAC) and electronic primary care records. PARTICIPANTS: We studied 1562 adolescents who had completed the CIS-R in ALSPAC at age 17-18 years and had linkage established to their primary care records...
December 1, 2016: BMJ Open
https://www.readbyqxmd.com/read/27902751/exploration-of-a-polygenic-risk-score-for-alcohol-consumption-a-longitudinal-analysis-from-the-alspac-cohort
#14
Michelle Taylor, Andrew J Simpkin, Philip C Haycock, Frank Dudbridge, Luisa Zuccolo
BACKGROUND: Uncertainty remains about the true extent by which alcohol consumption causes a number of health outcomes. Genetic variants, or combinations of variants built into a polygenic risk score (PGRS), can be used in an instrumental variable framework to assess causality between a phenotype and disease outcome of interest, a method known as Mendelian randomisation (MR). We aimed to identify genetic variants involved in the aetiology of alcohol consumption, and develop a PGRS for alcohol...
2016: PloS One
https://www.readbyqxmd.com/read/27892595/the-rate-of-change-in-alcohol-misuse-across-adolescence-is-heritable
#15
Alexis C Edwards, Jon Heron, Vladimir Vladimirov, Aaron R Wolen, Daniel E Adkins, Fazil Aliev, Matthew Hickman, Kenneth S Kendler
BACKGROUND: Alcohol use typically begins during adolescence and escalates into young adulthood. This represents an important period for the establishment of alcohol use and misuse patterns, which can have psychosocial and medical consequences. Although changes in alcohol use during this time have been phenotypically characterized, their genetic nature is poorly understood. METHODS: Participants of the Avon Longitudinal Study of Parents and Children completed the Alcohol Use Disorders Identification Test (AUDIT) 4 times from age 16 to 20...
January 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27879246/father-involvement-in-early-child-rearing-and-behavioural-outcomes-in-their-pre-adolescent-children-evidence-from-the-alspac-uk-birth-cohort
#16
Charles Opondo, Maggie Redshaw, Emily Savage-McGlynn, Maria A Quigley
OBJECTIVE: To explore the nature of paternal involvement in early child-rearing adopting a social developmental perspective, and estimate its effect on behavioural outcomes of children aged 9 and 11 years. SETTING: The data come from the Avon Longitudinal Study of Parents and Children (ALSPAC) cohort recruited in the former county of Avon in the southwest of England. PARTICIPANTS: Out of the 14 701 children in this cohort who were alive at 1 year, 10 440 children were living with both parents at 8 months and were therefore eligible...
November 22, 2016: BMJ Open
https://www.readbyqxmd.com/read/27878096/a-sixth-level-habitat-cascade-increases-biodiversity-in-an-intertidal-estuary
#17
Mads S Thomsen, Thomas Hildebrand, Paul M South, Travis Foster, Alfonso Siciliano, Eliza Oldach, David R Schiel
Many studies have documented habitat cascades where two co-occurring habitat-forming species control biodiversity. However, more than two habitat-formers could theoretically co-occur. We here documented a sixth-level habitat cascade from the Avon-Heathcote Estuary, New Zealand, by correlating counts of attached inhabitants to the size and accumulated biomass of their biogenic hosts. These data revealed predictable sequences of habitat-formation (=attachment space). First, the bivalve Austrovenus provided habitat for green seaweeds (Ulva) that provided habitat for trochid snails in a typical estuarine habitat cascade...
November 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27862641/association-between-oxytocin-receptor-genotype-maternal-care-and-eating-disorder-behaviours-in-a-community-sample-of-women
#18
Nadia Micali, Marta Crous-Bou, Janet Treasure, Elizabeth A Lawson
This study aimed to investigate associations between oxytocin receptor gene (OXT-R) polymorphisms (rs53576 and rs2254298), their interaction with maternal care (GxE), and ED behaviours in a community sample. We studied 3698 women from the Avon Longitudinal Study of Parents and Children (ALSPAC) who participated in a two-phase prevalence study of lifetime ED and had genotype data. The GG rs53576 genotype was associated with binge eating and purging, and the rs2254298 AG/AA genotype with restrictive eating lifetime...
January 2017: European Eating Disorders Review: the Journal of the Eating Disorders Association
https://www.readbyqxmd.com/read/27853543/life-history-factors-personality-and-the-social-clustering-of-sexual-experience-in-adolescents
#19
Abram J van Leeuwen, Ruth Mace
Adolescent sexual behaviour may show clustering in neighbourhoods, schools and friendship networks. This study aims to assess how experience with sexual intercourse clusters across the social world of adolescents and whether predictors implicated by life history theory or personality traits can account for its between-individual variation and social patterning. Using data on 2877 adolescents from the Avon Longitudinal Study of Parents and Children, we ran logistic multiple classification models to assess the clustering of sexual experience by approximately 17...
October 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27845196/chronic-fatigue-syndrome-and-chronic-widespread-pain-in-adolescence-population-birth-cohort-study
#20
Tom Norris, Kevin Deere, Jon H Tobias, Esther Crawley
: Although many studies have investigated the overlap between pain phenotypes and chronic fatigue syndrome (CFS) in adults, little is known about the relationship between these conditions in adolescents. The study's aim was therefore to identify whether a relationship exists between chronic widespread pain (CWP) and CFS in adolescents and investigate whether the two share common associations with a set of covariates. A questionnaire was administered to offspring of the Avon Longitudinal Study of Parents and Children (ALSPAC) at age 17, asking about site, duration, and pain intensity, from which participants with CWP were identified...
November 12, 2016: Journal of Pain: Official Journal of the American Pain Society
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